import express from "express";
import fetch from "node-fetch";
import {
  CloudWatchLogsClient,
  DescribeLogGroupsCommand,
  DescribeLogStreamsCommand,
  FilterLogEventsCommand
} from "@aws-sdk/client-cloudwatch-logs";
import { GetSecretValueCommand, ListSecretsCommand, SecretsManagerClient } from "@aws-sdk/client-secrets-manager";
import {
  GetObjectCommand,
  HeadObjectCommand,
  ListBucketsCommand,
  ListObjectsV2Command,
  S3Client
} from "@aws-sdk/client-s3";
import { simpleParser } from "mailparser";

const app = express();

const PORT = Number(process.env.PORT || 3334);
const SES_ENDPOINT = process.env.SES_VIEWER_ENDPOINT || "http://localhost:4566/_aws/ses";
const FETCH_TIMEOUT_MS = Number(process.env.SES_VIEWER_FETCH_TIMEOUT_MS || 5000);
const DEFAULT_REFRESH_MS = Number(process.env.SES_VIEWER_REFRESH_MS || 10000);
const CLOUDWATCH_ENDPOINT = process.env.CLOUDWATCH_VIEWER_ENDPOINT || "http://localhost:4566";
const CLOUDWATCH_REGION = process.env.CLOUDWATCH_VIEWER_REGION || process.env.AWS_DEFAULT_REGION || "ca-central-1";
const CLOUDWATCH_DEFAULT_GROUP = process.env.CLOUDWATCH_VIEWER_LOG_GROUP || "development";
const CLOUDWATCH_DEFAULT_WINDOW_MS = Number(process.env.CLOUDWATCH_VIEWER_WINDOW_MS || 15 * 60 * 1000);
const CLOUDWATCH_DEFAULT_LIMIT = Number(process.env.CLOUDWATCH_VIEWER_LIMIT || 200);
const SECRETS_ENDPOINT = process.env.SECRETS_VIEWER_ENDPOINT || CLOUDWATCH_ENDPOINT;
const SECRETS_REGION = process.env.SECRETS_VIEWER_REGION || CLOUDWATCH_REGION;
const S3_ENDPOINT = process.env.S3_VIEWER_ENDPOINT || CLOUDWATCH_ENDPOINT;
const S3_REGION = process.env.S3_VIEWER_REGION || CLOUDWATCH_REGION;
const S3_DEFAULT_BUCKET = process.env.S3_VIEWER_BUCKET || "";
const S3_PREVIEW_MAX_BYTES = Number(process.env.S3_VIEWER_PREVIEW_BYTES || 256 * 1024);
const S3_IMAGE_PREVIEW_MAX_BYTES = Number(process.env.S3_VIEWER_IMAGE_PREVIEW_BYTES || 1024 * 1024);
const LOCALSTACK_CREDENTIALS = {
  accessKeyId: process.env.AWS_ACCESS_KEY_ID || "test",
  secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY || "test"
};
const cloudWatchLogsClient = new CloudWatchLogsClient({
  region: CLOUDWATCH_REGION,
  endpoint: CLOUDWATCH_ENDPOINT,
  credentials: LOCALSTACK_CREDENTIALS
});
const secretsManagerClient = new SecretsManagerClient({
  region: SECRETS_REGION,
  endpoint: SECRETS_ENDPOINT,
  credentials: LOCALSTACK_CREDENTIALS
});
const s3Client = new S3Client({
  region: S3_REGION,
  endpoint: S3_ENDPOINT,
  credentials: LOCALSTACK_CREDENTIALS,
  forcePathStyle: true
});

app.use((req, res, next) => {
  res.set("Cache-Control", "no-store");
  next();
});

app.get("/", (req, res) => {
  res.type("html").send(renderHtml());
});

app.get("/app.js", (req, res) => {
  res.type("application/javascript").send(`(${clientApp.toString()})(${JSON.stringify(getClientConfig())});`);
});

app.get("/health", (req, res) => {
  res.json({
    ok: true,
    endpoint: SES_ENDPOINT,
    endpoints: {
      ses: SES_ENDPOINT,
      cloudWatchLogs: CLOUDWATCH_ENDPOINT,
      secretsManager: SECRETS_ENDPOINT,
      s3: S3_ENDPOINT
    },
    port: PORT,
    defaultRefreshMs: DEFAULT_REFRESH_MS
  });
});

app.get("/api/service-health", async (req, res) => {
  try {
    res.json(await loadServiceHealthSummary());
  } catch (error) {
    console.error("Error fetching service health:", error);
    res.status(502).json({
      error: "Unable to fetch LocalStack service health",
      details: error.message
    });
  }
});

app.get("/api/messages", async (req, res) => {
  try {
    res.json(await loadMessages());
  } catch (error) {
    console.error("Error fetching messages:", error);
    res.status(502).json({
      error: "Unable to fetch messages from LocalStack SES",
      details: error.message,
      endpoint: SES_ENDPOINT
    });
  }
});

app.get("/api/messages/:id/raw", async (req, res) => {
  try {
    const message = await findSesMessageById(req.params.id);

    if (!message) {
      res.status(404).type("text/plain").send("Message not found");
      return;
    }

    res.type("text/plain").send(message.RawData || "");
  } catch (error) {
    console.error("Error fetching raw message:", error);
    res.status(502).type("text/plain").send(`Unable to fetch raw message: ${error.message}`);
  }
});

app.get("/api/messages/:id/attachments/:index", async (req, res) => {
  try {
    const attachmentIndex = Number.parseInt(req.params.index, 10);

    if (!Number.isInteger(attachmentIndex) || attachmentIndex < 0) {
      res.status(400).type("text/plain").send("Attachment index must be a non-negative integer");
      return;
    }

    const parsed = await parseSesMessageById(req.params.id);

    if (!parsed) {
      res.status(404).type("text/plain").send("Message not found");
      return;
    }

    const attachment = parsed.attachments?.[attachmentIndex];

    if (!attachment) {
      res.status(404).type("text/plain").send("Attachment not found");
      return;
    }

    const filename = resolveAttachmentFilename(attachment, attachmentIndex);
    const content = Buffer.isBuffer(attachment.content) ? attachment.content : Buffer.from(attachment.content || "");

    res.setHeader("Content-Type", attachment.contentType || "application/octet-stream");
    res.setHeader("Content-Disposition", buildAttachmentDisposition(filename));
    res.setHeader("Content-Length", String(content.length));
    res.send(content);
  } catch (error) {
    console.error("Error downloading attachment:", error);
    res.status(502).type("text/plain").send(`Unable to download attachment: ${error.message}`);
  }
});

app.get("/api/logs/groups", async (req, res) => {
  try {
    const groups = await loadLogGroups();
    res.json({
      endpoint: CLOUDWATCH_ENDPOINT,
      region: CLOUDWATCH_REGION,
      defaultGroup: CLOUDWATCH_DEFAULT_GROUP,
      groups
    });
  } catch (error) {
    console.error("Error fetching log groups:", error);
    res.status(502).json({
      error: "Unable to fetch CloudWatch log groups from LocalStack",
      details: error.message,
      endpoint: CLOUDWATCH_ENDPOINT
    });
  }
});

app.get("/api/logs/streams", async (req, res) => {
  try {
    const logGroupName = String(req.query.group || "");

    if (!logGroupName) {
      res.status(400).json({ error: "Query parameter 'group' is required" });
      return;
    }

    res.json({
      logGroupName,
      streams: await loadLogStreams(logGroupName)
    });
  } catch (error) {
    console.error("Error fetching log streams:", error);
    res.status(502).json({
      error: "Unable to fetch CloudWatch log streams from LocalStack",
      details: error.message,
      endpoint: CLOUDWATCH_ENDPOINT
    });
  }
});

app.get("/api/logs/events", async (req, res) => {
  try {
    const logGroupName = String(req.query.group || "");
    const logStreamName = String(req.query.stream || "");
    const windowMs = clampNumber(req.query.windowMs, CLOUDWATCH_DEFAULT_WINDOW_MS, 60 * 1000, 24 * 60 * 60 * 1000);
    const limit = clampNumber(req.query.limit, CLOUDWATCH_DEFAULT_LIMIT, 25, 500);

    if (!logGroupName) {
      res.status(400).json({ error: "Query parameter 'group' is required" });
      return;
    }

    res.json(await loadLogEvents({ logGroupName, logStreamName, windowMs, limit }));
  } catch (error) {
    console.error("Error fetching log events:", error);
    res.status(502).json({
      error: "Unable to fetch CloudWatch log events from LocalStack",
      details: error.message,
      endpoint: CLOUDWATCH_ENDPOINT
    });
  }
});

app.get("/api/secrets", async (req, res) => {
  try {
    res.json(await loadSecrets());
  } catch (error) {
    console.error("Error fetching secrets:", error);
    res.status(502).json({
      error: "Unable to fetch Secrets Manager secrets from LocalStack",
      details: error.message,
      endpoint: SECRETS_ENDPOINT
    });
  }
});

app.get("/api/secrets/value", async (req, res) => {
  try {
    const secretId = String(req.query.id || "");

    if (!secretId) {
      res.status(400).json({ error: "Query parameter 'id' is required" });
      return;
    }

    res.json(await loadSecretValue(secretId));
  } catch (error) {
    if (error?.name === "ResourceNotFoundException") {
      res.status(404).json({
        error: "Secret not found",
        details: error.message,
        endpoint: SECRETS_ENDPOINT
      });
      return;
    }

    console.error("Error fetching secret value:", error);
    res.status(502).json({
      error: "Unable to fetch Secrets Manager value from LocalStack",
      details: error.message,
      endpoint: SECRETS_ENDPOINT
    });
  }
});

app.get("/api/s3/buckets", async (req, res) => {
  try {
    res.json(await loadS3Buckets());
  } catch (error) {
    console.error("Error fetching S3 buckets:", error);
    res.status(502).json({
      error: "Unable to fetch S3 buckets from LocalStack",
      details: error.message,
      endpoint: S3_ENDPOINT
    });
  }
});

app.get("/api/s3/objects", async (req, res) => {
  try {
    const bucket = String(req.query.bucket || "");
    const prefix = String(req.query.prefix || "");

    if (!bucket) {
      res.status(400).json({ error: "Query parameter 'bucket' is required" });
      return;
    }

    res.json(await loadS3Objects({ bucket, prefix }));
  } catch (error) {
    console.error("Error fetching S3 objects:", error);
    res.status(502).json({
      error: "Unable to fetch S3 objects from LocalStack",
      details: error.message,
      endpoint: S3_ENDPOINT
    });
  }
});

app.get("/api/s3/object", async (req, res) => {
  try {
    const bucket = String(req.query.bucket || "");
    const key = String(req.query.key || "");

    if (!bucket || !key) {
      res.status(400).json({ error: "Query parameters 'bucket' and 'key' are required" });
      return;
    }

    res.json(await loadS3ObjectPreview({ bucket, key }));
  } catch (error) {
    if (error?.name === "NoSuchKey" || error?.name === "NotFound") {
      res.status(404).json({
        error: "Object not found",
        details: error.message,
        endpoint: S3_ENDPOINT
      });
      return;
    }

    console.error("Error fetching S3 object preview:", error);
    res.status(502).json({
      error: "Unable to fetch S3 object preview from LocalStack",
      details: error.message,
      endpoint: S3_ENDPOINT
    });
  }
});

app.get("/api/s3/download", async (req, res) => {
  try {
    const bucket = String(req.query.bucket || "");
    const key = String(req.query.key || "");
    const inline = String(req.query.inline || "") === "1";

    if (!bucket || !key) {
      res.status(400).type("text/plain").send("Query parameters 'bucket' and 'key' are required");
      return;
    }

    const response = await s3Client.send(
      new GetObjectCommand({
        Bucket: bucket,
        Key: key
      })
    );
    const content = Buffer.from(await response.Body.transformToByteArray());
    const filename = basenameFromKey(key);

    res.setHeader("Content-Type", response.ContentType || guessObjectContentType(key));
    res.setHeader(
      "Content-Disposition",
      inline ? buildInlineDisposition(filename) : buildAttachmentDisposition(filename)
    );
    res.setHeader("Content-Length", String(content.length));
    res.send(content);
  } catch (error) {
    if (error?.name === "NoSuchKey" || error?.name === "NotFound") {
      res.status(404).type("text/plain").send("Object not found");
      return;
    }

    console.error("Error downloading S3 object:", error);
    res.status(502).type("text/plain").send(`Unable to download S3 object: ${error.message}`);
  }
});

async function loadMessages() {
  const startedAt = Date.now();
  const sesMessages = await fetchSesMessages();
  const messages = await Promise.all(sesMessages.map((message, index) => toMessageViewModel(message, index)));

  messages.sort((left, right) => {
    if ((right.timestampMs || 0) !== (left.timestampMs || 0)) {
      return (right.timestampMs || 0) - (left.timestampMs || 0);
    }

    return right.index - left.index;
  });

  return {
    endpoint: SES_ENDPOINT,
    fetchedAt: new Date().toISOString(),
    fetchDurationMs: Date.now() - startedAt,
    totalMessages: messages.length,
    parseErrors: messages.filter((message) => Boolean(message.parseError)).length,
    latestMessageTimestamp: messages[0]?.timestamp || "",
    messages
  };
}

async function fetchSesMessages() {
  const response = await fetch(SES_ENDPOINT, {
    signal: AbortSignal.timeout(FETCH_TIMEOUT_MS)
  });

  if (!response.ok) {
    throw new Error(`SES endpoint responded with ${response.status}`);
  }

  const data = await response.json();
  return Array.isArray(data.messages) ? data.messages : [];
}

async function loadLogGroups() {
  const groups = [];
  let nextToken;
  let pageCount = 0;

  do {
    const response = await cloudWatchLogsClient.send(
      new DescribeLogGroupsCommand({
        nextToken,
        limit: 50
      })
    );

    groups.push(
      ...(response.logGroups || []).map((group) => ({
        name: group.logGroupName || "",
        arn: group.arn || "",
        storedBytes: group.storedBytes || 0,
        retentionInDays: group.retentionInDays || 0,
        creationTime: group.creationTime || 0
      }))
    );

    nextToken = response.nextToken;
    pageCount += 1;
  } while (nextToken && pageCount < 10);

  return groups.sort((left, right) => left.name.localeCompare(right.name));
}

async function loadLogStreams(logGroupName) {
  const streams = [];
  let nextToken;
  let pageCount = 0;

  do {
    const response = await cloudWatchLogsClient.send(
      new DescribeLogStreamsCommand({
        logGroupName,
        descending: true,
        orderBy: "LastEventTime",
        nextToken,
        limit: 50
      })
    );

    streams.push(
      ...(response.logStreams || []).map((stream) => ({
        name: stream.logStreamName || "",
        arn: stream.arn || "",
        lastEventTimestamp: stream.lastEventTimestamp || 0,
        lastIngestionTime: stream.lastIngestionTime || 0,
        storedBytes: stream.storedBytes || 0
      }))
    );

    nextToken = response.nextToken;
    pageCount += 1;
  } while (nextToken && pageCount < 6 && streams.length < 250);

  return streams;
}

async function loadLogEvents({ logGroupName, logStreamName, windowMs, limit }) {
  const startedAt = Date.now();
  const eventMap = new Map();
  const startTime = Date.now() - windowMs;
  let nextToken;
  let previousToken = "";
  let pageCount = 0;
  let searchedLogStreams = 0;

  do {
    const response = await cloudWatchLogsClient.send(
      new FilterLogEventsCommand({
        logGroupName,
        logStreamNames: logStreamName ? [logStreamName] : undefined,
        startTime,
        endTime: Date.now(),
        limit,
        nextToken
      })
    );

    for (const event of response.events || []) {
      const id =
        event.eventId || `${event.logStreamName || "stream"}-${event.timestamp || 0}-${event.ingestionTime || 0}`;

      if (!eventMap.has(id)) {
        const message = String(event.message || "").trim();
        eventMap.set(id, {
          id,
          timestamp: event.timestamp || 0,
          ingestionTime: event.ingestionTime || 0,
          logStreamName: event.logStreamName || "",
          message,
          preview: buildLogPreview(message)
        });
      }
    }

    searchedLogStreams = Math.max(searchedLogStreams, (response.searchedLogStreams || []).length);
    previousToken = nextToken || "";
    nextToken = response.nextToken;
    pageCount += 1;
  } while (nextToken && nextToken !== previousToken && pageCount < 10 && eventMap.size < limit);

  const events = [...eventMap.values()]
    .sort((left, right) => {
      if ((right.timestamp || 0) !== (left.timestamp || 0)) {
        return (right.timestamp || 0) - (left.timestamp || 0);
      }

      return left.logStreamName.localeCompare(right.logStreamName);
    })
    .slice(0, limit);

  return {
    endpoint: CLOUDWATCH_ENDPOINT,
    region: CLOUDWATCH_REGION,
    logGroupName,
    logStreamName,
    fetchDurationMs: Date.now() - startedAt,
    latestTimestamp: events[0]?.timestamp || 0,
    searchedLogStreams,
    totalEvents: events.length,
    events
  };
}

async function loadSecrets() {
  const startedAt = Date.now();
  const secrets = [];
  let nextToken;
  let pageCount = 0;

  do {
    const response = await secretsManagerClient.send(
      new ListSecretsCommand({
        NextToken: nextToken,
        MaxResults: 50
      })
    );

    secrets.push(
      ...(response.SecretList || []).map((secret, index) => ({
        id: secret.ARN || secret.Name || `secret-${index}`,
        name: secret.Name || "Unnamed secret",
        arn: secret.ARN || "",
        description: secret.Description || "",
        createdDate: normalizeTimestamp(secret.CreatedDate),
        lastChangedDate: normalizeTimestamp(secret.LastChangedDate),
        lastAccessedDate: normalizeTimestamp(secret.LastAccessedDate),
        deletedDate: normalizeTimestamp(secret.DeletedDate),
        primaryRegion: secret.PrimaryRegion || "",
        owningService: secret.OwningService || "",
        rotationEnabled: Boolean(secret.RotationEnabled),
        versionCount: Object.keys(secret.SecretVersionsToStages || {}).length,
        tagCount: Array.isArray(secret.Tags) ? secret.Tags.length : 0,
        tags: (secret.Tags || [])
          .map((tag) => ({
            key: tag.Key || "",
            value: tag.Value || ""
          }))
          .filter((tag) => tag.key || tag.value)
      }))
    );

    nextToken = response.NextToken;
    pageCount += 1;
  } while (nextToken && pageCount < 10 && secrets.length < 500);

  secrets.sort((left, right) => {
    const leftTime = Date.parse(left.lastChangedDate || left.createdDate || 0) || 0;
    const rightTime = Date.parse(right.lastChangedDate || right.createdDate || 0) || 0;

    if (rightTime !== leftTime) {
      return rightTime - leftTime;
    }

    return left.name.localeCompare(right.name);
  });

  return {
    endpoint: SECRETS_ENDPOINT,
    region: SECRETS_REGION,
    fetchedAt: new Date().toISOString(),
    fetchDurationMs: Date.now() - startedAt,
    totalSecrets: secrets.length,
    latestTimestamp: secrets[0]?.lastChangedDate || secrets[0]?.createdDate || "",
    secrets
  };
}

async function loadSecretValue(secretId) {
  const startedAt = Date.now();
  const response = await secretsManagerClient.send(
    new GetSecretValueCommand({
      SecretId: secretId
    })
  );

  const secretBinary = response.SecretBinary
    ? typeof response.SecretBinary === "string"
      ? response.SecretBinary
      : Buffer.from(response.SecretBinary).toString("base64")
    : "";

  return {
    endpoint: SECRETS_ENDPOINT,
    region: SECRETS_REGION,
    fetchDurationMs: Date.now() - startedAt,
    id: secretId,
    name: response.Name || "",
    arn: response.ARN || "",
    versionId: response.VersionId || "",
    versionStages: Array.isArray(response.VersionStages) ? response.VersionStages : [],
    createdDate: normalizeTimestamp(response.CreatedDate),
    secretString: typeof response.SecretString === "string" ? response.SecretString : "",
    secretBinary
  };
}

async function loadS3Buckets() {
  const startedAt = Date.now();
  const response = await s3Client.send(new ListBucketsCommand({}));
  const buckets = (response.Buckets || [])
    .map((bucket) => ({
      name: bucket.Name || "",
      creationDate: normalizeTimestamp(bucket.CreationDate)
    }))
    .filter((bucket) => bucket.name)
    .sort((left, right) => left.name.localeCompare(right.name));

  return {
    endpoint: S3_ENDPOINT,
    region: S3_REGION,
    fetchedAt: new Date().toISOString(),
    fetchDurationMs: Date.now() - startedAt,
    totalBuckets: buckets.length,
    buckets
  };
}

async function loadS3Objects({ bucket, prefix }) {
  const startedAt = Date.now();
  const objects = [];
  let continuationToken;
  let pageCount = 0;

  do {
    const response = await s3Client.send(
      new ListObjectsV2Command({
        Bucket: bucket,
        Prefix: prefix || undefined,
        ContinuationToken: continuationToken,
        MaxKeys: 200
      })
    );

    objects.push(
      ...(response.Contents || []).map((object, index) => ({
        id: `${bucket}::${object.Key || index}`,
        bucket,
        key: object.Key || "",
        size: object.Size || 0,
        lastModified: normalizeTimestamp(object.LastModified),
        etag: String(object.ETag || "").replace(/^"|"$/g, ""),
        storageClass: object.StorageClass || "STANDARD"
      }))
    );

    continuationToken = response.IsTruncated ? response.NextContinuationToken : undefined;
    pageCount += 1;
  } while (continuationToken && pageCount < 10 && objects.length < 1000);

  objects.sort((left, right) => {
    const leftTime = Date.parse(left.lastModified || 0) || 0;
    const rightTime = Date.parse(right.lastModified || 0) || 0;

    if (rightTime !== leftTime) {
      return rightTime - leftTime;
    }

    return left.key.localeCompare(right.key);
  });

  return {
    endpoint: S3_ENDPOINT,
    region: S3_REGION,
    bucket,
    prefix,
    fetchedAt: new Date().toISOString(),
    fetchDurationMs: Date.now() - startedAt,
    totalObjects: objects.length,
    latestTimestamp: objects[0]?.lastModified || "",
    objects
  };
}

async function loadS3ObjectPreview({ bucket, key }) {
  const startedAt = Date.now();
  const head = await s3Client.send(
    new HeadObjectCommand({
      Bucket: bucket,
      Key: key
    })
  );

  const contentType = head.ContentType || guessObjectContentType(key);
  const contentLength = Number(head.ContentLength || 0);
  const previewType = resolveS3PreviewType(contentType, key);
  const result = {
    endpoint: S3_ENDPOINT,
    region: S3_REGION,
    bucket,
    key,
    fetchDurationMs: 0,
    contentType,
    contentLength,
    etag: String(head.ETag || "").replace(/^"|"$/g, ""),
    lastModified: normalizeTimestamp(head.LastModified),
    metadata: head.Metadata || {},
    previewType,
    previewText: "",
    imageDataUrl: "",
    truncated: false
  };

  const shouldLoadTextPreview = previewType === "json" || previewType === "text" || previewType === "html";
  const shouldLoadImagePreview =
    previewType === "image" && contentLength > 0 && contentLength <= S3_IMAGE_PREVIEW_MAX_BYTES;

  if ((shouldLoadTextPreview || shouldLoadImagePreview) && contentLength > 0) {
    const previewBytes = Math.max(1, Math.min(contentLength || S3_PREVIEW_MAX_BYTES, S3_PREVIEW_MAX_BYTES));
    const response = await s3Client.send(
      new GetObjectCommand({
        Bucket: bucket,
        Key: key,
        Range: `bytes=0-${previewBytes - 1}`
      })
    );
    const content = Buffer.from(await response.Body.transformToByteArray());
    result.truncated = contentLength > content.length;

    if (shouldLoadImagePreview) {
      result.imageDataUrl = `data:${contentType};base64,${content.toString("base64")}`;
    } else {
      result.previewText = content.toString("utf8");
    }
  }

  result.fetchDurationMs = Date.now() - startedAt;
  return result;
}

async function loadServiceHealthSummary() {
  const startedAt = Date.now();
  const [sesResult, logsResult, secretsResult, s3Result] = await Promise.allSettled([
    fetchSesMessages(),
    loadLogGroups(),
    loadSecrets(),
    loadS3Buckets()
  ]);

  return {
    fetchedAt: new Date().toISOString(),
    fetchDurationMs: Date.now() - startedAt,
    services: {
      emails: summarizeHealthResult({
        icon: "✉️",
        panel: "emails",
        label: "SES Emails",
        result: sesResult,
        count: sesResult.status === "fulfilled" ? sesResult.value.length : 0,
        detail: SES_ENDPOINT,
        noun: "email"
      }),
      logs: summarizeHealthResult({
        icon: "📜",
        panel: "logs",
        label: "CloudWatch Logs",
        result: logsResult,
        count: logsResult.status === "fulfilled" ? logsResult.value.length : 0,
        detail: `${CLOUDWATCH_ENDPOINT} (${CLOUDWATCH_REGION})`,
        noun: "group"
      }),
      secrets: summarizeHealthResult({
        icon: "🔐",
        panel: "secrets",
        label: "Secrets Manager",
        result: secretsResult,
        count: secretsResult.status === "fulfilled" ? secretsResult.value.totalSecrets : 0,
        detail: `${SECRETS_ENDPOINT} (${SECRETS_REGION})`,
        noun: "secret"
      }),
      s3: summarizeHealthResult({
        icon: "🪣",
        panel: "s3",
        label: "S3 Explorer",
        result: s3Result,
        count: s3Result.status === "fulfilled" ? s3Result.value.totalBuckets : 0,
        detail: `${S3_ENDPOINT} (${S3_REGION})`,
        noun: "bucket"
      })
    }
  };
}

async function findSesMessageById(id) {
  const messages = await fetchSesMessages();
  return messages.find((message, index) => resolveMessageId(message, index) === id) || null;
}

async function parseSesMessageById(id) {
  const message = await findSesMessageById(id);

  if (!message) {
    return null;
  }

  return simpleParser(message.RawData || "");
}

async function toMessageViewModel(message, index) {
  const id = resolveMessageId(message, index);

  try {
    const parsed = await simpleParser(message.RawData || "");
    const textContent = normalizeText(parsed.text || "");
    const renderedHtml = buildRenderedHtml(parsed.html || parsed.textAsHtml || "");
    const timestamp = normalizeTimestamp(message.Timestamp || parsed.date);

    return {
      id,
      index,
      from: formatAddressList(parsed.from) || message.Source || "Unknown sender",
      to: formatAddressList(parsed.to) || "No To Address",
      replyTo: formatAddressList(parsed.replyTo),
      subject: parsed.subject || "No Subject",
      region: message.Region || "",
      timestamp,
      timestampMs: timestamp ? Date.parse(timestamp) : 0,
      messageId: parsed.messageId || "",
      rawSizeBytes: Buffer.byteLength(message.RawData || "", "utf8"),
      attachmentCount: parsed.attachments.length,
      attachments: parsed.attachments.map((attachment, attachmentIndex) => ({
        index: attachmentIndex,
        filename: resolveAttachmentFilename(attachment, attachmentIndex),
        contentType: attachment.contentType || "application/octet-stream",
        size: attachment.size || 0
      })),
      preview: buildPreview(textContent, renderedHtml),
      textContent,
      renderedHtml,
      hasHtml: Boolean(renderedHtml),
      parseError: ""
    };
  } catch (error) {
    return {
      id,
      index,
      from: message.Source || "Unknown sender",
      to: "Unknown recipient",
      replyTo: "",
      subject: "Unable to parse message",
      region: message.Region || "",
      timestamp: normalizeTimestamp(message.Timestamp),
      timestampMs: message.Timestamp ? Date.parse(message.Timestamp) : 0,
      messageId: "",
      rawSizeBytes: Buffer.byteLength(message.RawData || "", "utf8"),
      attachmentCount: 0,
      attachments: [],
      preview: "This message could not be parsed. Open the raw view to inspect the MIME source.",
      textContent: "",
      renderedHtml: "",
      hasHtml: false,
      parseError: error.message
    };
  }
}

function resolveMessageId(message, index = 0) {
  return message.Id || `${message.Timestamp || "unknown"}-${message.Source || "unknown"}-${index}`;
}

function resolveAttachmentFilename(attachment, index = 0) {
  if (attachment?.filename) {
    return attachment.filename;
  }

  return `attachment-${index + 1}${attachmentExtension(attachment?.contentType)}`;
}

function attachmentExtension(contentType) {
  const normalized = String(contentType || "")
    .split(";")[0]
    .trim()
    .toLowerCase();

  return (
    {
      "application/json": ".json",
      "application/pdf": ".pdf",
      "application/zip": ".zip",
      "image/gif": ".gif",
      "image/jpeg": ".jpg",
      "image/png": ".png",
      "image/webp": ".webp",
      "text/calendar": ".ics",
      "text/csv": ".csv",
      "text/html": ".html",
      "text/plain": ".txt"
    }[normalized] || ""
  );
}

function buildAttachmentDisposition(filename) {
  const fallback = String(filename || "attachment")
    .replace(/[^\x20-\x7e]/g, "_")
    .replace(/["\\]/g, "_");

  return `attachment; filename="${fallback}"; filename*=UTF-8''${encodeURIComponent(filename || "attachment")}`;
}

function buildInlineDisposition(filename) {
  const fallback = String(filename || "file")
    .replace(/[^\x20-\x7e]/g, "_")
    .replace(/["\\]/g, "_");

  return `inline; filename="${fallback}"; filename*=UTF-8''${encodeURIComponent(filename || "file")}`;
}

function basenameFromKey(key) {
  const value = String(key || "");
  const parts = value.split("/").filter(Boolean);
  return parts[parts.length - 1] || "file";
}

function guessObjectContentType(key) {
  const normalizedKey = String(key || "").toLowerCase();

  if (normalizedKey.endsWith(".json")) {
    return "application/json";
  }

  if (normalizedKey.endsWith(".csv")) {
    return "text/csv";
  }

  if (normalizedKey.endsWith(".html") || normalizedKey.endsWith(".htm")) {
    return "text/html";
  }

  if (normalizedKey.endsWith(".txt") || normalizedKey.endsWith(".log") || normalizedKey.endsWith(".md")) {
    return "text/plain";
  }

  if (normalizedKey.endsWith(".png")) {
    return "image/png";
  }

  if (normalizedKey.endsWith(".jpg") || normalizedKey.endsWith(".jpeg")) {
    return "image/jpeg";
  }

  if (normalizedKey.endsWith(".gif")) {
    return "image/gif";
  }

  if (normalizedKey.endsWith(".webp")) {
    return "image/webp";
  }

  if (normalizedKey.endsWith(".svg")) {
    return "image/svg+xml";
  }

  if (normalizedKey.endsWith(".pdf")) {
    return "application/pdf";
  }

  return "application/octet-stream";
}

function resolveS3PreviewType(contentType, key) {
  const normalizedType = String(contentType || "").toLowerCase();
  const normalizedKey = String(key || "").toLowerCase();

  if (normalizedType.includes("json") || normalizedKey.endsWith(".json")) {
    return "json";
  }

  if (normalizedType.startsWith("image/")) {
    return "image";
  }

  if (normalizedType.includes("html") || normalizedKey.endsWith(".html") || normalizedKey.endsWith(".htm")) {
    return "html";
  }

  if (
    normalizedType.startsWith("text/") ||
    [".txt", ".log", ".csv", ".xml", ".yml", ".yaml", ".md"].some((extension) => normalizedKey.endsWith(extension))
  ) {
    return "text";
  }

  return "binary";
}

function summarizeHealthResult({ icon, panel, label, result, count, detail, noun }) {
  if (result.status === "fulfilled") {
    return {
      ok: true,
      icon,
      panel,
      label,
      count,
      summary: `${count} ${noun}${count === 1 ? "" : "s"}`,
      detail
    };
  }

  return {
    ok: false,
    icon,
    panel,
    label,
    count: 0,
    summary: "Needs attention",
    detail: result.reason?.message || detail
  };
}

function normalizeTimestamp(value) {
  if (!value) {
    return "";
  }

  const date = value instanceof Date ? value : new Date(value);
  return Number.isNaN(date.getTime()) ? "" : date.toISOString();
}

function normalizeText(value) {
  return String(value || "")
    .replace(/\r\n/g, "\n")
    .trim();
}

function buildPreview(textContent, renderedHtml) {
  const source = (textContent || stripTags(renderedHtml)).replace(/\s+/g, " ").trim();

  if (!source) {
    return "No message preview available.";
  }

  return source.length > 220 ? `${source.slice(0, 217)}...` : source;
}

function buildLogPreview(message) {
  const source = String(message || "")
    .replace(/\s+/g, " ")
    .trim();

  if (!source) {
    return "No log preview available.";
  }

  return source.length > 220 ? `${source.slice(0, 217)}...` : source;
}

function clampNumber(value, fallback, min, max) {
  const parsed = Number(value);

  if (!Number.isFinite(parsed)) {
    return fallback;
  }

  return Math.min(Math.max(parsed, min), max);
}

function buildRenderedHtml(html) {
  if (!html) {
    return "";
  }

  const value = String(html);
  const hasDocument = /<html[\s>]/i.test(value) || /<!doctype/i.test(value);

  if (hasDocument) {
    return value;
  }

  return `<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <base target="_blank">
    <style>body{margin:0;padding:16px;font-family:Arial,sans-serif;background:#fff;}</style>
  </head>
  <body>${value}</body>
</html>`;
}

function stripTags(value) {
  return String(value || "")
    .replace(/<style[\s\S]*?<\/style>/gi, " ")
    .replace(/<script[\s\S]*?<\/script>/gi, " ")
    .replace(/<[^>]+>/g, " ");
}

function formatAddressList(addresses) {
  if (!addresses?.value?.length) {
    return "";
  }

  return addresses.value
    .map(({ name, address }) => {
      if (name && address) {
        return `${name} <${address}>`;
      }

      return address || name || "";
    })
    .filter(Boolean)
    .join(", ");
}

function getClientConfig() {
  return {
    defaultRefreshMs: DEFAULT_REFRESH_MS,
    endpoint: SES_ENDPOINT,
    cloudWatchEndpoint: CLOUDWATCH_ENDPOINT,
    cloudWatchRegion: CLOUDWATCH_REGION,
    secretsEndpoint: SECRETS_ENDPOINT,
    secretsRegion: SECRETS_REGION,
    s3Endpoint: S3_ENDPOINT,
    s3Region: S3_REGION,
    defaultS3Bucket: S3_DEFAULT_BUCKET,
    defaultLogGroup: CLOUDWATCH_DEFAULT_GROUP,
    defaultLogWindowMs: CLOUDWATCH_DEFAULT_WINDOW_MS,
    defaultLogLimit: CLOUDWATCH_DEFAULT_LIMIT
  };
}

function renderHtml() {
  return `<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>LocalStack Inspector</title>
    <style>${renderStyles()}</style>
  </head>
  <body>
    <div class="page">
      <header class="hero">
        <div class="heroShell">
          <div class="heroIdentity">
            <p class="eyebrow">LocalStack Toolbox</p>
            <h1>Inspector</h1>
          </div>
          <div class="heroTopRow">
            <div class="heroActions">
              <button id="themeToggle" class="ghost themeToggle" type="button" aria-pressed="false">☀️ Light theme</button>
              <button id="resetStateButton" class="ghost" type="button">🧹 Reset saved state</button>
            </div>
          </div>
          <div class="heroStatusRow">
            <span class="heroStatusLabel">Stack</span>
            <div id="healthStrip" class="healthStrip" aria-live="polite"></div>
            <button id="healthRefreshButton" class="mini healthRefreshButton" type="button" title="Refresh service health" aria-label="Refresh service health">🩺</button>
          </div>
        </div>
      </header>

      <section id="emailsPanel" class="workspacePanel">
        <section class="toolControls">
          <div class="row">
            <button id="refreshButton" class="primary" type="button">🔄 Refresh</button>
            <label class="chip"><input id="autoToggle" type="checkbox" checked> Live refresh</label>
            <label class="chip">Every
              <select id="intervalSelect">
                <option value="5000">5s</option>
                <option value="10000" selected>10s</option>
                <option value="15000">15s</option>
                <option value="30000">30s</option>
                <option value="60000">60s</option>
              </select>
            </label>
            <span id="statusChip" class="status">Waiting for first refresh...</span>
          </div>
          <div class="row">
            <input id="searchInput" class="search" type="search" placeholder="Search subject, sender, preview..." autocomplete="off">
            <button id="clearSearchButton" class="ghost" type="button">Clear</button>
            <button id="expandAllButton" class="ghost" type="button">Open all</button>
            <button id="collapseAllButton" class="ghost" type="button">Close all</button>
          </div>
        </section>

        <section class="stats">
          <article class="stat"><span>Total</span><strong id="totalStat">0</strong><small id="visibleStat">0 visible</small></article>
          <article class="stat"><span>New</span><strong id="newStat">0</strong><small>New since last refresh</small></article>
          <article class="stat"><span>Newest</span><strong id="newestStat" class="small">No messages</strong><small id="updatedStat">Not refreshed yet</small></article>
          <article class="stat"><span>Fetch</span><strong id="fetchStat" class="small">Idle</strong><small id="fetchDetail">Endpoint: ${escapeHtml(SES_ENDPOINT)}</small></article>
        </section>

        <div id="emailsContentPane" class="contentPane">
          <div class="contentStack">
            <div id="banner" class="banner" hidden></div>
            <div id="empty" class="empty" hidden></div>
            <section id="list" class="list" aria-live="polite"></section>
            <div class="paneTopWrap">
              <button id="scrollToTopButton" class="paneTopButton" type="button" title="Scroll to top" aria-label="Scroll to top">&#8593;</button>
            </div>
          </div>
        </div>
      </section>

      <section id="logsPanel" class="workspacePanel" hidden>
        <section class="toolControls">
          <div class="row">
            <button id="logsRefreshButton" class="primary" type="button">🔄 Refresh</button>
            <label class="chip"><input id="logsAutoToggle" type="checkbox" checked> Live refresh</label>
            <label class="chip">Every
              <select id="logsIntervalSelect">
                <option value="5000">5s</option>
                <option value="10000" selected>10s</option>
                <option value="15000">15s</option>
                <option value="30000">30s</option>
                <option value="60000">60s</option>
              </select>
            </label>
            <span id="logsStatusChip" class="status">Waiting for first refresh...</span>
          </div>
          <div class="row">
            <label class="chip">Group
              <select id="logsGroupSelect"></select>
            </label>
            <label class="chip">Stream
              <select id="logsStreamSelect"></select>
            </label>
            <label class="chip">Window
              <select id="logsWindowSelect">
                <option value="300000">5m</option>
                <option value="900000" selected>15m</option>
                <option value="3600000">1h</option>
                <option value="21600000">6h</option>
                <option value="86400000">24h</option>
              </select>
            </label>
            <label class="chip">Limit
              <select id="logsLimitSelect">
                <option value="100">100</option>
                <option value="200" selected>200</option>
                <option value="300">300</option>
                <option value="500">500</option>
              </select>
            </label>
          </div>
          <div class="row">
            <input id="logsSearchInput" class="search" type="search" placeholder="Search stream name or log content..." autocomplete="off">
            <button id="logsClearSearchButton" class="ghost" type="button">Clear</button>
            <label class="chip"><input id="logsWrapToggle" type="checkbox" checked> Wrap lines</label>
            <label class="chip"><input id="logsTailToggle" type="checkbox"> Tail newest</label>
            <button id="logsExpandAllButton" class="ghost" type="button">Open all</button>
            <button id="logsCollapseAllButton" class="ghost" type="button">Close all</button>
          </div>
        </section>

        <section class="stats">
          <article class="stat"><span>Events</span><strong id="logsTotalStat">0</strong><small id="logsVisibleStat">0 visible</small></article>
          <article class="stat"><span>Streams</span><strong id="logsStreamsStat">0</strong><small>Streams in selected group</small></article>
          <article class="stat"><span>Latest</span><strong id="logsNewestStat" class="small">No events</strong><small id="logsUpdatedStat">Not refreshed yet</small></article>
          <article class="stat"><span>Fetch</span><strong id="logsFetchStat" class="small">Idle</strong><small id="logsFetchDetail">Endpoint: ${escapeHtml(CLOUDWATCH_ENDPOINT)} (${escapeHtml(CLOUDWATCH_REGION)})</small></article>
        </section>

        <div id="logsContentPane" class="contentPane">
          <div class="contentStack">
            <div id="logsBanner" class="banner" hidden></div>
            <div id="logsEmpty" class="empty" hidden></div>
            <section id="logsList" class="logList" aria-live="polite"></section>
            <div class="paneTopWrap">
              <button id="logsScrollToTopButton" class="paneTopButton" type="button" title="Scroll to top" aria-label="Scroll to top">&#8593;</button>
            </div>
          </div>
        </div>
      </section>

      <section id="secretsPanel" class="workspacePanel" hidden>
        <section class="toolControls">
          <div class="row">
            <button id="secretsRefreshButton" class="primary" type="button">🔄 Refresh</button>
            <label class="chip"><input id="secretsAutoToggle" type="checkbox" checked> Live refresh</label>
            <label class="chip">Every
              <select id="secretsIntervalSelect">
                <option value="5000">5s</option>
                <option value="10000" selected>10s</option>
                <option value="15000">15s</option>
                <option value="30000">30s</option>
                <option value="60000">60s</option>
              </select>
            </label>
            <span id="secretsStatusChip" class="status">Waiting for first refresh...</span>
          </div>
          <div class="row">
            <input id="secretsSearchInput" class="search" type="search" placeholder="Search secret name, description, service, tags..." autocomplete="off">
            <button id="secretsClearSearchButton" class="ghost" type="button">Clear</button>
            <button id="secretsExpandAllButton" class="ghost" type="button">Open all</button>
            <button id="secretsCollapseAllButton" class="ghost" type="button">Close all</button>
          </div>
        </section>

        <section class="stats">
          <article class="stat"><span>Secrets</span><strong id="secretsTotalStat">0</strong><small id="secretsVisibleStat">0 visible</small></article>
          <article class="stat"><span>Loaded</span><strong id="secretsLoadedStat">0</strong><small>Values loaded this session</small></article>
          <article class="stat"><span>Latest</span><strong id="secretsNewestStat" class="small">No secrets</strong><small id="secretsUpdatedStat">Not refreshed yet</small></article>
          <article class="stat"><span>Fetch</span><strong id="secretsFetchStat" class="small">Idle</strong><small id="secretsFetchDetail">Endpoint: ${escapeHtml(SECRETS_ENDPOINT)} (${escapeHtml(SECRETS_REGION)})</small></article>
        </section>

        <div id="secretsContentPane" class="contentPane">
          <div class="contentStack">
            <div id="secretsBanner" class="banner" hidden></div>
            <div id="secretsEmpty" class="empty" hidden></div>
            <section id="secretsList" class="list" aria-live="polite"></section>
            <div class="paneTopWrap">
              <button id="secretsScrollToTopButton" class="paneTopButton" type="button" title="Scroll to top" aria-label="Scroll to top">&#8593;</button>
            </div>
          </div>
        </div>
      </section>

      <section id="s3Panel" class="workspacePanel" hidden>
        <section class="toolControls">
          <div class="row">
            <button id="s3RefreshButton" class="primary" type="button">🔄 Refresh</button>
            <label class="chip"><input id="s3AutoToggle" type="checkbox" checked> Live refresh</label>
            <label class="chip">Every
              <select id="s3IntervalSelect">
                <option value="5000">5s</option>
                <option value="10000" selected>10s</option>
                <option value="15000">15s</option>
                <option value="30000">30s</option>
                <option value="60000">60s</option>
              </select>
            </label>
            <span id="s3StatusChip" class="status">Waiting for first refresh...</span>
          </div>
          <div class="row">
            <label class="chip">Bucket
              <select id="s3BucketSelect"></select>
            </label>
            <input id="s3PrefixInput" class="search searchCompact" type="search" placeholder="Prefix filter (optional)" autocomplete="off">
            <button id="s3ApplyPrefixButton" class="ghost" type="button">Apply prefix</button>
          </div>
          <div class="row">
            <input id="s3SearchInput" class="search" type="search" placeholder="Search object key, storage class, or etag..." autocomplete="off">
            <button id="s3ClearSearchButton" class="ghost" type="button">Clear</button>
            <button id="s3ExpandAllButton" class="ghost" type="button">Open all</button>
            <button id="s3CollapseAllButton" class="ghost" type="button">Close all</button>
          </div>
        </section>

        <section class="stats">
          <article class="stat"><span>Objects</span><strong id="s3TotalStat">0</strong><small id="s3VisibleStat">0 visible</small></article>
          <article class="stat"><span>Buckets</span><strong id="s3BucketsStat">0</strong><small>Available in LocalStack</small></article>
          <article class="stat"><span>Latest</span><strong id="s3NewestStat" class="small">No objects</strong><small id="s3UpdatedStat">Not refreshed yet</small></article>
          <article class="stat"><span>Fetch</span><strong id="s3FetchStat" class="small">Idle</strong><small id="s3FetchDetail">Endpoint: ${escapeHtml(S3_ENDPOINT)} (${escapeHtml(S3_REGION)})</small></article>
        </section>

        <div id="s3ContentPane" class="contentPane">
          <div class="contentStack">
            <div id="s3Banner" class="banner" hidden></div>
            <div id="s3Empty" class="empty" hidden></div>
            <section id="s3List" class="list" aria-live="polite"></section>
            <div class="paneTopWrap">
              <button id="s3ScrollToTopButton" class="paneTopButton" type="button" title="Scroll to top" aria-label="Scroll to top">&#8593;</button>
            </div>
          </div>
        </div>
      </section>
    </div>

    <script type="module" src="/app.js"></script>
  </body>
</html>`;
}

function renderStyles() {
  return `
    :root{--panel:rgba(255,255,255,.82);--panel-strong:#fff;--card-shell:linear-gradient(180deg,rgba(255,246,236,.98),rgba(255,252,247,.99));--card-body:#fffdf9;--log-shell:linear-gradient(180deg,rgba(239,246,255,.98),rgba(248,251,255,.99));--log-body:#f8fbff;--secret-shell:linear-gradient(180deg,rgba(239,251,246,.98),rgba(247,253,249,.99));--secret-body:#f6fcf8;--bucket-shell:linear-gradient(180deg,rgba(255,249,232,.98),rgba(255,252,243,.99));--bucket-body:#fffcf2;--ink:#1f2933;--muted:#607080;--line:rgba(31,41,51,.12);--card-line:rgba(207,109,60,.24);--log-line:rgba(48,113,169,.22);--secret-line:rgba(31,143,101,.2);--bucket-line:rgba(181,137,37,.22);--accent:#cf6d3c;--accent-soft:rgba(207,109,60,.1);--info:#3071a9;--info-soft:rgba(48,113,169,.1);--secret:#1f8f65;--secret-soft:rgba(31,143,101,.1);--bucket:#9d6b00;--bucket-soft:rgba(181,137,37,.12);--ok:#1f8f65;--warn:#9d5f00;--bad:#b33a3a;--shadow:0 12px 28px rgba(35,43,53,.08);--card-shadow:0 18px 34px rgba(122,78,34,.12);--log-shadow:0 16px 32px rgba(48,113,169,.12);--secret-shadow:0 16px 32px rgba(31,143,101,.12);--bucket-shadow:0 16px 32px rgba(181,137,37,.12);}
    *{box-sizing:border-box}
    html,body{margin:0;height:100%;overflow:hidden}
    body{color-scheme:light;background:radial-gradient(circle at top left,rgba(207,109,60,.18),transparent 28%),radial-gradient(circle at top right,rgba(31,143,101,.12),transparent 24%),linear-gradient(180deg,#f8f5ef,#efe7da);color:var(--ink);font:15px/1.45 "Aptos","Segoe UI Variable Display","Segoe UI",system-ui,sans-serif;transition:background-color .18s ease,color .18s ease}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .page{display:grid;grid-template-rows:auto minmax(0,1fr);gap:10px;max-width:1360px;height:100vh;height:100dvh;margin:0 auto;padding:14px;overflow:hidden}
    .hero{display:block;margin-bottom:0}
    .heroShell,.toolControls,.stat{background:var(--panel);backdrop-filter:blur(14px);border:1px solid var(--line);box-shadow:var(--shadow)}
    .card{background:var(--card-shell);border:1px solid var(--card-line);box-shadow:var(--card-shadow)}
    .heroShell,.toolControls{border-radius:18px}
    .heroShell{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px}
    .toolControls{padding:12px}
    .heroIdentity{display:grid;gap:3px;min-width:0}
    .eyebrow{margin:0 0 4px;color:var(--accent);font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
    h1{margin:0;font-size:clamp(1.8rem,3.6vw,2.85rem);line-height:.96;letter-spacing:-.05em}
    .lede{margin:8px 0 0;max-width:54ch;color:var(--muted);font-size:.92rem}
    .heroTopRow{display:flex;flex:1 1 360px;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end}
    .heroActions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end}
    .heroStatusRow{display:flex;flex:1 1 100%;flex-wrap:wrap;gap:8px;align-items:center}
    .heroStatusLabel{color:var(--muted);font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
    .helper{margin:0;color:var(--muted);font-size:.89rem}
    .healthStrip{display:flex;flex:1 1 520px;flex-wrap:wrap;gap:6px;align-items:center;min-width:0}
    .healthBadge{display:inline-flex;align-items:center;gap:8px;min-height:30px;max-width:100%;padding:0 10px;border-radius:999px;border:1px solid rgba(31,41,51,.1);background:rgba(255,255,255,.78);box-shadow:0 8px 18px rgba(15,23,42,.06);text-align:left;transition:transform .12s ease,background-color .12s ease,border-color .12s ease,box-shadow .12s ease}
    .healthBadgeName{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:800;white-space:nowrap}
    .healthBadgeSummary{min-width:0;overflow:hidden;color:var(--muted);font-size:.78rem;font-weight:700;text-overflow:ellipsis;white-space:nowrap}
    .healthBadge.ok{border-color:rgba(31,143,101,.22);background:rgba(31,143,101,.1)}
    .healthBadge.bad{border-color:rgba(179,58,58,.22);background:rgba(179,58,58,.1)}
    .healthBadge.warn{border-color:rgba(157,95,0,.22);background:rgba(157,95,0,.1)}
    .healthBadge.active{border-color:rgba(207,109,60,.28);background:rgba(207,109,60,.16);box-shadow:0 10px 24px rgba(207,109,60,.12)}
    .healthBadge.active .healthBadgeName,.healthBadge.active .healthBadgeSummary{color:var(--ink)}
    .healthRefreshButton{flex:0 0 auto;padding:0 10px}
    .primary,.ghost,.mini,.tab{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:999px;border:1px solid transparent;transition:transform .12s ease,background-color .12s ease,border-color .12s ease}
    .themeToggle{white-space:nowrap}
    .workspacePanel{display:grid;grid-template-rows:auto auto minmax(0,1fr);gap:6px;min-height:0}
    .workspacePanel[hidden]{display:none}
    .toolControls{display:grid;gap:8px}
    .contentPane{height:100%;min-height:0;overflow:auto;scroll-behavior:smooth;padding-right:4px}
    .contentStack{display:grid;gap:8px;min-width:100%;padding-bottom:18px}
    .paneTopWrap{display:flex;justify-content:flex-end;position:sticky;bottom:14px;pointer-events:none;padding-right:10px}
    .paneTopButton{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:999px;border:1px solid rgba(255,255,255,.32);background:rgba(31,41,51,.42);color:#fff;font-size:1.1rem;line-height:1;backdrop-filter:blur(12px);box-shadow:0 10px 24px rgba(31,41,51,.18);opacity:0;transform:translateY(8px);visibility:hidden;pointer-events:none;transition:opacity .16s ease,transform .16s ease,background-color .12s ease;z-index:6}
    .paneTopButton.visible{opacity:.78;transform:translateY(0);visibility:visible;pointer-events:auto}
    .paneTopButton.visible:hover{opacity:1;background:rgba(31,41,51,.62);transform:translateY(-1px)}
    .row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
    .primary,.ghost{min-height:34px;padding:0 12px;font-weight:700}
    .mini,.tab{min-height:28px;padding:0 10px;font-weight:600}
    .primary{background:var(--accent);color:#fff7f2}
    .ghost,.mini{background:rgba(255,255,255,.76);border-color:var(--line);color:var(--ink)}
    .tab{background:transparent;color:var(--muted)}
    .tab.active{background:#fff;border-color:rgba(207,109,60,.18);color:var(--ink)}
    .primary:hover,.ghost:hover,.mini:hover,.tab:hover{transform:translateY(-1px)}
    .chip{display:inline-flex;align-items:center;gap:7px;min-height:34px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.76);border:1px solid var(--line);font-weight:600;font-size:.88rem}
    .chip input{margin:0;accent-color:var(--accent)}
    .chip select{border:none;background:transparent;outline:none;color:var(--ink)}
    .search{flex:1 1 260px;min-height:36px;padding:0 12px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.82);color:var(--ink);outline:none}
    .searchCompact{flex:1 1 220px}
    .status{display:inline-flex;align-items:center;min-height:32px;padding:0 11px;border-radius:999px;background:rgba(255,255,255,.76);border:1px solid var(--line);color:var(--muted);font-size:.86rem;font-weight:600}
    .status.ok{color:var(--ok);border-color:rgba(31,143,101,.22);background:rgba(31,143,101,.08)}
    .status.warn{color:var(--warn);border-color:rgba(157,95,0,.22);background:rgba(157,95,0,.08)}
    .status.bad{color:var(--bad);border-color:rgba(179,58,58,.22);background:rgba(179,58,58,.08)}
    .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:0}
    .stat{border-radius:16px;padding:10px 12px}
    .stat span{display:block;margin-bottom:4px;color:var(--muted);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
    .stat strong{display:block;font-size:clamp(1.6rem,3vw,2rem);line-height:1;letter-spacing:-.05em}
    .stat strong.small{font-size:1.1rem;line-height:1.3;letter-spacing:-.02em}
    .stat small{display:block;margin-top:4px;color:var(--muted);font-size:.82rem}
    .banner,.empty{margin:0;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.82)}
    .banner{color:var(--bad);border-color:rgba(179,58,58,.24);background:rgba(179,58,58,.08)}
    .list{display:grid;gap:12px;align-content:start}
    .logList{display:grid;gap:10px;align-content:start;width:100%}
    .card{overflow:hidden;border-radius:16px}
    .card.new{border-color:rgba(31,143,101,.3);box-shadow:var(--card-shadow),0 0 0 1px rgba(31,143,101,.12)}
    .summary{list-style:none;display:grid;gap:7px;padding:12px 14px;cursor:pointer;background:linear-gradient(180deg,rgba(255,250,244,.88),rgba(255,246,238,.96))}
    .summary::-webkit-details-marker{display:none}
    .top,.tags,.toolbar,.actions,.attachments{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .top{justify-content:space-between}
    .head{min-width:0;flex:1 1 320px}
    .head h2{margin:0;font-size:clamp(1rem,1.6vw,1.22rem);line-height:1.18;letter-spacing:-.03em;word-break:break-word}
    .meta{margin:4px 0 0;color:var(--muted);font-size:.88rem;word-break:break-word}
    .time,.tag{display:inline-flex;align-items:center;min-height:24px;padding:0 10px;border-radius:999px;font-size:.76rem;font-weight:700}
    .time{background:rgba(31,41,51,.06)}
    .tag{background:var(--accent-soft);color:#8d5632}
    .tag.new{background:rgba(31,143,101,.1);color:var(--ok)}
    .tag.bad{background:rgba(179,58,58,.1);color:var(--bad)}
    .preview{margin:0;color:#324150;font-size:.9rem}
    .body{display:grid;gap:10px;padding:10px 14px 14px;border-top:1px solid rgba(207,109,60,.14);background:var(--card-body)}
    .toolbar{justify-content:space-between;align-items:center}
    .tabs{display:inline-flex;gap:4px;padding:3px;border-radius:999px;background:rgba(207,109,60,.08)}
    .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px}
    .metaCard{padding:9px 11px;border-radius:12px;background:rgba(255,255,255,.78);border:1px solid rgba(207,109,60,.12)}
    .metaCard dt{margin:0 0 4px;color:var(--muted);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
    .metaCard dd{margin:0;word-break:break-word}
    .attachments{gap:6px}
    .attachment{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border-radius:10px;background:rgba(255,248,240,.96);border:1px solid rgba(207,109,60,.12);font-size:.84rem}
    .attachmentLink{color:#8d5632;text-decoration:none;transition:transform .12s ease,background-color .12s ease,border-color .12s ease}
    .attachmentLink:hover{transform:translateY(-1px);background:#fff;border-color:rgba(207,109,60,.28)}
    .panel{overflow:hidden;border-radius:12px;border:1px solid rgba(207,109,60,.14);background:#fff}
    .logEvent{width:100%;overflow:hidden;border-radius:16px;border:1px solid var(--log-line);background:var(--log-shell);box-shadow:var(--log-shadow)}
    .secretCard{background:var(--secret-shell);border:1px solid var(--secret-line);box-shadow:var(--secret-shadow)}
    .s3Card{background:var(--bucket-shell);border:1px solid var(--bucket-line);box-shadow:var(--bucket-shadow)}
    .logSummary{list-style:none;display:grid;gap:7px;padding:10px 12px;cursor:pointer}
    .logSummary::-webkit-details-marker{display:none}
    .secretSummary{background:linear-gradient(180deg,rgba(244,253,248,.9),rgba(236,249,242,.96))}
    .s3Summary{background:linear-gradient(180deg,rgba(255,251,238,.92),rgba(255,246,223,.98))}
    .logSummaryTop{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}
    .logMeta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .logSummaryActions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end}
    .logTag{background:var(--info-soft);color:var(--info);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .secretTag{background:var(--secret-soft);color:var(--secret);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .bucketTag{background:var(--bucket-soft);color:var(--bucket);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .logPreview{margin:0;color:#324150;font:600 .88rem/1.45 "Cascadia Code","Consolas",monospace;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .logBody{padding:8px 12px 12px;border-top:1px solid rgba(48,113,169,.14);background:var(--log-body)}
    .secretBody{border-top-color:rgba(31,143,101,.14);background:var(--secret-body)}
    .s3Body{border-top-color:rgba(181,137,37,.18);background:var(--bucket-body)}
    .logCopyButton{box-shadow:none}
    .logBody pre{border-radius:12px;border:1px solid rgba(48,113,169,.14);padding:12px;background:linear-gradient(180deg,rgba(48,113,169,.04),transparent 140px),#fff}
    .secretValuePanel{display:grid;gap:10px}
    .secretValuePanel pre{border-radius:12px;border:1px solid rgba(31,143,101,.14);padding:12px;background:linear-gradient(180deg,rgba(31,143,101,.04),transparent 140px),#fff}
    .s3PreviewPanel{display:grid;gap:10px}
    .s3PreviewImage{max-width:min(100%,640px);border-radius:12px;border:1px solid rgba(181,137,37,.16);background:#fff}
    .logBody.wrapOff pre{white-space:pre;word-break:normal}
    .tag.levelError{background:rgba(179,58,58,.12);color:var(--bad)}
    .tag.levelWarn{background:rgba(157,95,0,.12);color:var(--warn)}
    .tag.levelInfo{background:rgba(48,113,169,.12);color:var(--info)}
    .tag.levelDebug{background:rgba(96,112,128,.12);color:var(--muted)}
    .jsonSyntax .jsonKey{color:#b55f2d}
    .jsonSyntax .jsonString{color:#1f8f65}
    .jsonSyntax .jsonNumber{color:#2f6ea9}
    .jsonSyntax .jsonBoolean{color:#9d5f00}
    .jsonSyntax .jsonNull{color:#b33a3a}
    iframe{width:100%;min-height:560px;border:none;background:#fff}
    pre{margin:0;padding:12px;white-space:pre-wrap;word-break:break-word;overflow:auto;font:12.5px/1.45 "Cascadia Code","Consolas",monospace;color:#102030;background:linear-gradient(180deg,rgba(207,109,60,.04),transparent 140px),#fff}
    .placeholder,.inlineError{padding:12px}
    .inlineError{color:var(--bad)}
    body[data-theme="dark"]{color-scheme:dark;background:radial-gradient(circle at top left,rgba(207,109,60,.12),transparent 28%),radial-gradient(circle at top right,rgba(48,113,169,.12),transparent 26%),linear-gradient(180deg,#10161d,#17202a)}
    body[data-theme="dark"] .heroShell,
    body[data-theme="dark"] .toolControls,
    body[data-theme="dark"] .stat{background:rgba(15,21,30,.84);border-color:rgba(148,163,184,.16);box-shadow:0 14px 30px rgba(0,0,0,.32)}
    body[data-theme="dark"] .card{background:linear-gradient(180deg,rgba(50,35,28,.96),rgba(31,25,22,.98));border-color:rgba(207,109,60,.24);box-shadow:0 18px 34px rgba(0,0,0,.34)}
    body[data-theme="dark"] .logEvent{background:linear-gradient(180deg,rgba(18,31,45,.96),rgba(14,24,36,.98));border-color:rgba(73,144,204,.22);box-shadow:0 16px 32px rgba(0,0,0,.34)}
    body[data-theme="dark"] .secretCard{background:linear-gradient(180deg,rgba(19,39,31,.96),rgba(14,30,24,.98));border-color:rgba(64,170,126,.22);box-shadow:0 16px 32px rgba(0,0,0,.34)}
    body[data-theme="dark"] .s3Card{background:linear-gradient(180deg,rgba(52,42,17,.96),rgba(37,30,13,.98));border-color:rgba(181,137,37,.24);box-shadow:0 16px 32px rgba(0,0,0,.34)}
    body[data-theme="dark"] .healthBadge{background:rgba(15,21,30,.84);border-color:rgba(148,163,184,.18);box-shadow:0 10px 22px rgba(0,0,0,.28)}
    body[data-theme="dark"] .healthBadge.active{border-color:rgba(207,109,60,.32);background:rgba(207,109,60,.18);box-shadow:0 12px 26px rgba(0,0,0,.3)}
    body[data-theme="dark"] .healthBadge.active .healthBadgeName,
    body[data-theme="dark"] .healthBadge.active .healthBadgeSummary{color:#f8ede6}
    body[data-theme="dark"] .tab{color:#aab8c8}
    body[data-theme="dark"] .tab.active,
    body[data-theme="dark"] .ghost,
    body[data-theme="dark"] .mini,
    body[data-theme="dark"] .chip,
    body[data-theme="dark"] .status,
    body[data-theme="dark"] .search{background:rgba(18,25,35,.88);border-color:rgba(148,163,184,.18);color:#edf2f7}
    body[data-theme="dark"] .chip select,
    body[data-theme="dark"] .search::placeholder{color:#9fb0c2}
    body[data-theme="dark"] .ghost,
    body[data-theme="dark"] .mini,
    body[data-theme="dark"] .tab.active{border-color:rgba(148,163,184,.18)}
    body[data-theme="dark"] .summary{background:linear-gradient(180deg,rgba(58,40,31,.88),rgba(45,33,28,.96))}
    body[data-theme="dark"] .body{background:#211a17;border-top-color:rgba(207,109,60,.18)}
    body[data-theme="dark"] .logSummary{background:linear-gradient(180deg,rgba(21,34,47,.94),rgba(16,27,39,.98))}
    body[data-theme="dark"] .logBody{background:#13212d;border-top-color:rgba(73,144,204,.18)}
    body[data-theme="dark"] .secretSummary{background:linear-gradient(180deg,rgba(21,43,34,.94),rgba(16,34,27,.98))}
    body[data-theme="dark"] .secretBody{background:#12241c;border-top-color:rgba(64,170,126,.18)}
    body[data-theme="dark"] .s3Summary{background:linear-gradient(180deg,rgba(53,41,19,.94),rgba(39,31,15,.98))}
    body[data-theme="dark"] .s3Body{background:#241d10;border-top-color:rgba(181,137,37,.18)}
    body[data-theme="dark"] .metaCard{background:rgba(17,25,35,.64);border-color:rgba(148,163,184,.14)}
    body[data-theme="dark"] .attachment{background:rgba(50,35,28,.9);border-color:rgba(207,109,60,.18)}
    body[data-theme="dark"] .attachmentLink{color:#f6c4a9}
    body[data-theme="dark"] .attachmentLink:hover{background:rgba(75,52,39,.96);border-color:rgba(246,196,169,.26)}
    body[data-theme="dark"] .panel,
    body[data-theme="dark"] pre,
    body[data-theme="dark"] .logBody pre{background:linear-gradient(180deg,rgba(73,144,204,.06),transparent 140px),#0f1722;color:#e8edf3;border-color:rgba(148,163,184,.16)}
    body[data-theme="dark"] .secretValuePanel pre{background:linear-gradient(180deg,rgba(64,170,126,.08),transparent 140px),#0f1722;color:#e8edf3;border-color:rgba(148,163,184,.16)}
    body[data-theme="dark"] .s3PreviewPanel pre{background:linear-gradient(180deg,rgba(181,137,37,.08),transparent 140px),#0f1722;color:#e8edf3;border-color:rgba(148,163,184,.16)}
    body[data-theme="dark"] .panel{border-color:rgba(148,163,184,.14)}
    body[data-theme="dark"] .banner,
    body[data-theme="dark"] .empty{background:rgba(15,21,30,.82);border-color:rgba(148,163,184,.16)}
    body[data-theme="dark"] .time{background:rgba(148,163,184,.12);color:#e8edf3}
    body[data-theme="dark"] .tag{background:rgba(207,109,60,.14);color:#f0c2aa}
    body[data-theme="dark"] .logTag{background:rgba(73,144,204,.16);color:#93cfff}
    body[data-theme="dark"] .secretTag{background:rgba(64,170,126,.16);color:#9fe0be}
    body[data-theme="dark"] .bucketTag{background:rgba(181,137,37,.16);color:#f1d38c}
    body[data-theme="dark"] .preview,
    body[data-theme="dark"] .logPreview,
    body[data-theme="dark"] .metaCard dd,
    body[data-theme="dark"] .head h2,
    body[data-theme="dark"] .stat strong,
    body[data-theme="dark"] h1{color:#edf2f7}
    body[data-theme="dark"] .jsonSyntax .jsonKey{color:#f0b08a}
    body[data-theme="dark"] .jsonSyntax .jsonString{color:#80d5b0}
    body[data-theme="dark"] .jsonSyntax .jsonNumber{color:#94c9ff}
    body[data-theme="dark"] .jsonSyntax .jsonBoolean{color:#f0c274}
    body[data-theme="dark"] .jsonSyntax .jsonNull{color:#ff9c9c}
    body[data-theme="dark"] .meta,
    body[data-theme="dark"] .helper,
    body[data-theme="dark"] .lede,
    body[data-theme="dark"] .stat small,
    body[data-theme="dark"] .stat span,
    body[data-theme="dark"] .chip,
    body[data-theme="dark"] .tab{color:#aab8c8}
    body[data-theme="dark"] .paneTopButton{border-color:rgba(255,255,255,.18);background:rgba(8,12,18,.58);color:#edf2f7}
    body[data-theme="dark"] .paneTopButton.visible:hover{background:rgba(8,12,18,.8)}
    @media (max-width:1080px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
    @media (max-width:720px){.page{padding:12px}.heroShell,.heroTopRow,.toolbar,.row,.heroActions{align-items:stretch}.heroTopRow{justify-content:stretch;flex-basis:100%}.heroStatusRow{align-items:flex-start}.heroStatusLabel,.healthStrip{flex-basis:100%}.primary,.ghost,.chip,.themeToggle{width:100%;justify-content:center}.healthBadge{justify-content:flex-start}.logSummaryTop,.logSummaryActions{align-items:flex-start}.contentPane{min-height:300px}iframe{min-height:420px}}
  `;
}

function escapeHtml(value) {
  return String(value ?? "")
    .replace(/&/g, "&amp;")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;")
    .replace(/'/g, "&#39;");
}

function clientApp(config) {
  const THEME_STORAGE_KEY = "localstack-inspector-theme";
  const PANEL_STORAGE_KEY = "localstack-inspector-panel";
  const EMAIL_PREFERENCES_STORAGE_KEY = "localstack-inspector-email-preferences";
  const LOG_PREFERENCES_STORAGE_KEY = "localstack-inspector-log-preferences";
  const SECRET_PREFERENCES_STORAGE_KEY = "localstack-inspector-secret-preferences";
  const S3_PREFERENCES_STORAGE_KEY = "localstack-inspector-s3-preferences";
  const HEALTH_REFRESH_MS = 30000;
  const REFRESH_INTERVALS = [5000, 10000, 15000, 30000, 60000];
  const LOG_WINDOWS = [300000, 900000, 3600000, 21600000, 86400000];
  const LOG_LIMITS = [100, 200, 300, 500];
  const storedEmailPreferences = getStoredPreferences(EMAIL_PREFERENCES_STORAGE_KEY);
  const storedLogPreferences = getStoredPreferences(LOG_PREFERENCES_STORAGE_KEY);
  const storedSecretPreferences = getStoredPreferences(SECRET_PREFERENCES_STORAGE_KEY);
  const storedS3Preferences = getStoredPreferences(S3_PREFERENCES_STORAGE_KEY);

  const appState = {
    panel: getInitialPanel(),
    logsReady: false,
    secretsReady: false,
    s3Ready: false,
    theme: getInitialTheme()
  };

  const state = {
    messages: [],
    filtered: [],
    search: getStoredText(storedEmailPreferences?.search),
    auto: getStoredBoolean(storedEmailPreferences?.auto, true),
    interval: getStoredNumber(storedEmailPreferences?.interval, REFRESH_INTERVALS, config.defaultRefreshMs),
    loading: false,
    error: "",
    updatedAt: 0,
    source: "initial",
    duration: 0,
    parseErrors: 0,
    newest: "",
    newIds: new Set(),
    knownIds: new Set(),
    openIds: new Set(),
    views: {},
    raw: {},
    listSignature: ""
  };

  const logsState = {
    groups: [],
    streams: [],
    events: [],
    filtered: [],
    group: getStoredText(storedLogPreferences?.group, config.defaultLogGroup || ""),
    stream: getStoredText(storedLogPreferences?.stream),
    search: getStoredText(storedLogPreferences?.search),
    auto: getStoredBoolean(storedLogPreferences?.auto, true),
    interval: getStoredNumber(storedLogPreferences?.interval, REFRESH_INTERVALS, config.defaultRefreshMs),
    windowMs: getStoredNumber(storedLogPreferences?.windowMs, LOG_WINDOWS, config.defaultLogWindowMs),
    limit: getStoredNumber(storedLogPreferences?.limit, LOG_LIMITS, config.defaultLogLimit),
    wrapLines: getStoredBoolean(storedLogPreferences?.wrapLines, true),
    tailNewest: getStoredBoolean(storedLogPreferences?.tailNewest, false),
    loading: false,
    error: "",
    updatedAt: 0,
    source: "initial",
    duration: 0,
    newest: 0,
    searchedLogStreams: 0,
    openIds: new Set(),
    listSignature: ""
  };

  const secretsState = {
    items: [],
    filtered: [],
    search: getStoredText(storedSecretPreferences?.search),
    auto: getStoredBoolean(storedSecretPreferences?.auto, true),
    interval: getStoredNumber(storedSecretPreferences?.interval, REFRESH_INTERVALS, config.defaultRefreshMs),
    loading: false,
    error: "",
    updatedAt: 0,
    source: "initial",
    duration: 0,
    newest: "",
    openIds: new Set(),
    values: {},
    revealedIds: new Set(),
    listSignature: ""
  };

  const s3State = {
    buckets: [],
    objects: [],
    filtered: [],
    bucket: getStoredText(storedS3Preferences?.bucket, config.defaultS3Bucket || ""),
    prefix: getStoredText(storedS3Preferences?.prefix),
    search: getStoredText(storedS3Preferences?.search),
    auto: getStoredBoolean(storedS3Preferences?.auto, true),
    interval: getStoredNumber(storedS3Preferences?.interval, REFRESH_INTERVALS, config.defaultRefreshMs),
    loading: false,
    error: "",
    updatedAt: 0,
    source: "initial",
    duration: 0,
    newest: "",
    openIds: new Set(),
    previews: {},
    listSignature: ""
  };

  const healthState = {
    services: {},
    loading: false,
    error: "",
    updatedAt: 0,
    source: "initial"
  };

  const el = {
    themeToggle: document.getElementById("themeToggle"),
    resetStateButton: document.getElementById("resetStateButton"),
    healthRefreshButton: document.getElementById("healthRefreshButton"),
    healthStrip: document.getElementById("healthStrip"),
    emailsPanel: document.getElementById("emailsPanel"),
    logsPanel: document.getElementById("logsPanel"),
    secretsPanel: document.getElementById("secretsPanel"),
    s3Panel: document.getElementById("s3Panel"),
    refreshButton: document.getElementById("refreshButton"),
    autoToggle: document.getElementById("autoToggle"),
    intervalSelect: document.getElementById("intervalSelect"),
    searchInput: document.getElementById("searchInput"),
    clearSearchButton: document.getElementById("clearSearchButton"),
    expandAllButton: document.getElementById("expandAllButton"),
    collapseAllButton: document.getElementById("collapseAllButton"),
    scrollToTopButton: document.getElementById("scrollToTopButton"),
    statusChip: document.getElementById("statusChip"),
    totalStat: document.getElementById("totalStat"),
    visibleStat: document.getElementById("visibleStat"),
    newStat: document.getElementById("newStat"),
    newestStat: document.getElementById("newestStat"),
    updatedStat: document.getElementById("updatedStat"),
    fetchStat: document.getElementById("fetchStat"),
    fetchDetail: document.getElementById("fetchDetail"),
    banner: document.getElementById("banner"),
    empty: document.getElementById("empty"),
    list: document.getElementById("list"),
    emailsContentPane: document.getElementById("emailsContentPane"),
    logsRefreshButton: document.getElementById("logsRefreshButton"),
    logsAutoToggle: document.getElementById("logsAutoToggle"),
    logsIntervalSelect: document.getElementById("logsIntervalSelect"),
    logsGroupSelect: document.getElementById("logsGroupSelect"),
    logsStreamSelect: document.getElementById("logsStreamSelect"),
    logsWindowSelect: document.getElementById("logsWindowSelect"),
    logsLimitSelect: document.getElementById("logsLimitSelect"),
    logsSearchInput: document.getElementById("logsSearchInput"),
    logsClearSearchButton: document.getElementById("logsClearSearchButton"),
    logsWrapToggle: document.getElementById("logsWrapToggle"),
    logsTailToggle: document.getElementById("logsTailToggle"),
    logsExpandAllButton: document.getElementById("logsExpandAllButton"),
    logsCollapseAllButton: document.getElementById("logsCollapseAllButton"),
    logsScrollToTopButton: document.getElementById("logsScrollToTopButton"),
    logsStatusChip: document.getElementById("logsStatusChip"),
    logsTotalStat: document.getElementById("logsTotalStat"),
    logsVisibleStat: document.getElementById("logsVisibleStat"),
    logsStreamsStat: document.getElementById("logsStreamsStat"),
    logsNewestStat: document.getElementById("logsNewestStat"),
    logsUpdatedStat: document.getElementById("logsUpdatedStat"),
    logsFetchStat: document.getElementById("logsFetchStat"),
    logsFetchDetail: document.getElementById("logsFetchDetail"),
    logsBanner: document.getElementById("logsBanner"),
    logsEmpty: document.getElementById("logsEmpty"),
    logsList: document.getElementById("logsList"),
    logsContentPane: document.getElementById("logsContentPane"),
    secretsRefreshButton: document.getElementById("secretsRefreshButton"),
    secretsAutoToggle: document.getElementById("secretsAutoToggle"),
    secretsIntervalSelect: document.getElementById("secretsIntervalSelect"),
    secretsSearchInput: document.getElementById("secretsSearchInput"),
    secretsClearSearchButton: document.getElementById("secretsClearSearchButton"),
    secretsExpandAllButton: document.getElementById("secretsExpandAllButton"),
    secretsCollapseAllButton: document.getElementById("secretsCollapseAllButton"),
    secretsScrollToTopButton: document.getElementById("secretsScrollToTopButton"),
    secretsStatusChip: document.getElementById("secretsStatusChip"),
    secretsTotalStat: document.getElementById("secretsTotalStat"),
    secretsVisibleStat: document.getElementById("secretsVisibleStat"),
    secretsLoadedStat: document.getElementById("secretsLoadedStat"),
    secretsNewestStat: document.getElementById("secretsNewestStat"),
    secretsUpdatedStat: document.getElementById("secretsUpdatedStat"),
    secretsFetchStat: document.getElementById("secretsFetchStat"),
    secretsFetchDetail: document.getElementById("secretsFetchDetail"),
    secretsBanner: document.getElementById("secretsBanner"),
    secretsEmpty: document.getElementById("secretsEmpty"),
    secretsList: document.getElementById("secretsList"),
    secretsContentPane: document.getElementById("secretsContentPane"),
    s3RefreshButton: document.getElementById("s3RefreshButton"),
    s3AutoToggle: document.getElementById("s3AutoToggle"),
    s3IntervalSelect: document.getElementById("s3IntervalSelect"),
    s3BucketSelect: document.getElementById("s3BucketSelect"),
    s3PrefixInput: document.getElementById("s3PrefixInput"),
    s3ApplyPrefixButton: document.getElementById("s3ApplyPrefixButton"),
    s3SearchInput: document.getElementById("s3SearchInput"),
    s3ClearSearchButton: document.getElementById("s3ClearSearchButton"),
    s3ExpandAllButton: document.getElementById("s3ExpandAllButton"),
    s3CollapseAllButton: document.getElementById("s3CollapseAllButton"),
    s3ScrollToTopButton: document.getElementById("s3ScrollToTopButton"),
    s3StatusChip: document.getElementById("s3StatusChip"),
    s3TotalStat: document.getElementById("s3TotalStat"),
    s3VisibleStat: document.getElementById("s3VisibleStat"),
    s3BucketsStat: document.getElementById("s3BucketsStat"),
    s3NewestStat: document.getElementById("s3NewestStat"),
    s3UpdatedStat: document.getElementById("s3UpdatedStat"),
    s3FetchStat: document.getElementById("s3FetchStat"),
    s3FetchDetail: document.getElementById("s3FetchDetail"),
    s3Banner: document.getElementById("s3Banner"),
    s3Empty: document.getElementById("s3Empty"),
    s3List: document.getElementById("s3List"),
    s3ContentPane: document.getElementById("s3ContentPane")
  };

  el.autoToggle.checked = state.auto;
  el.intervalSelect.value = String(state.interval);
  el.searchInput.value = state.search;
  el.logsAutoToggle.checked = logsState.auto;
  el.logsIntervalSelect.value = String(logsState.interval);
  el.logsWindowSelect.value = String(logsState.windowMs);
  el.logsLimitSelect.value = String(logsState.limit);
  el.logsSearchInput.value = logsState.search;
  el.logsWrapToggle.checked = logsState.wrapLines;
  el.logsTailToggle.checked = logsState.tailNewest;
  el.secretsAutoToggle.checked = secretsState.auto;
  el.secretsIntervalSelect.value = String(secretsState.interval);
  el.secretsSearchInput.value = secretsState.search;
  el.s3AutoToggle.checked = s3State.auto;
  el.s3IntervalSelect.value = String(s3State.interval);
  el.s3PrefixInput.value = s3State.prefix;
  el.s3SearchInput.value = s3State.search;
  applyTheme(appState.theme);
  persistPanel();
  persistEmailPreferences();
  persistLogPreferences();
  persistSecretPreferences();
  persistS3Preferences();
  wire();
  renderWorkspace();
  renderAll();
  renderLogsAll();
  renderSecretsAll();
  renderS3All();
  renderHealthStrip();
  if (appState.panel === "logs") {
    ensureLogsReady();
  } else if (appState.panel === "secrets") {
    ensureSecretsReady();
  } else if (appState.panel === "s3") {
    ensureS3Ready();
  } else {
    refreshMessages("initial");
  }
  refreshHealthSummary("initial");
  window.setInterval(() => {
    if (!document.hidden) {
      refreshHealthSummary("auto");
    }
  }, HEALTH_REFRESH_MS);
  window.setInterval(() => {
    renderLiveClock();
    renderLogsLiveClock();
    renderSecretsLiveClock();
    renderS3LiveClock();
    renderHealthStrip();
  }, 1000);

  function wire() {
    el.themeToggle.addEventListener("click", () => {
      applyTheme(appState.theme === "dark" ? "light" : "dark");
    });

    el.resetStateButton.addEventListener("click", () => {
      resetSavedState();
    });

    el.healthRefreshButton.addEventListener("click", () => {
      refreshHealthSummary("manual");
    });

    el.healthStrip.addEventListener("click", async (event) => {
      const button = event.target.closest("button[data-health-panel]");

      if (!button) {
        return;
      }

      await setPanel(button.dataset.healthPanel);
    });

    el.refreshButton.addEventListener("click", () => refreshMessages("manual"));

    el.autoToggle.addEventListener("change", () => {
      state.auto = el.autoToggle.checked;
      persistEmailPreferences();
      scheduleRefresh();
      renderStatus();
    });

    el.intervalSelect.addEventListener("change", () => {
      state.interval = Number(el.intervalSelect.value) || config.defaultRefreshMs;
      persistEmailPreferences();
      scheduleRefresh();
      renderStatus();
    });

    el.searchInput.addEventListener("input", (event) => {
      state.search = event.target.value;
      applyFilter();
    });

    el.clearSearchButton.addEventListener("click", () => {
      state.search = "";
      el.searchInput.value = "";
      applyFilter();
    });

    el.expandAllButton.addEventListener("click", () => {
      state.filtered.forEach((message) => state.openIds.add(message.id));
      syncCardExpansion();
    });

    el.collapseAllButton.addEventListener("click", () => {
      state.openIds.clear();
      syncCardExpansion();
    });

    el.scrollToTopButton.addEventListener("click", () => {
      scrollPaneToTop(el.emailsContentPane);
    });

    el.emailsContentPane.addEventListener("scroll", () => {
      updatePaneTopButtonVisibility(el.emailsContentPane, el.scrollToTopButton);
    });

    el.list.addEventListener("click", async (event) => {
      const button = event.target.closest("button[data-action]");

      if (!button) {
        return;
      }

      const id = button.dataset.id;
      const message = getMessage(id);

      if (!message) {
        return;
      }

      if (button.dataset.action === "view") {
        state.views[id] = button.dataset.view;
        renderList();
        return;
      }

      if (button.dataset.action === "load-raw") {
        await loadRaw(id);
        renderList();
        return;
      }

      if (button.dataset.action === "copy-raw") {
        const raw = await loadRaw(id);

        if (raw) {
          await copyText(raw);
          setStatus("Raw message copied to the clipboard.", "ok");
        }
      }
    });

    el.logsRefreshButton.addEventListener("click", () => refreshLogs("manual"));

    el.logsAutoToggle.addEventListener("change", () => {
      logsState.auto = el.logsAutoToggle.checked;
      persistLogPreferences();
      scheduleLogsRefresh();
      renderLogsStatus();
    });

    el.logsIntervalSelect.addEventListener("change", () => {
      logsState.interval = Number(el.logsIntervalSelect.value) || config.defaultRefreshMs;
      persistLogPreferences();
      scheduleLogsRefresh();
      renderLogsStatus();
    });

    el.logsWindowSelect.addEventListener("change", () => {
      logsState.windowMs = Number(el.logsWindowSelect.value) || config.defaultLogWindowMs;
      persistLogPreferences();
      refreshLogs("window");
    });

    el.logsLimitSelect.addEventListener("change", () => {
      logsState.limit = Number(el.logsLimitSelect.value) || config.defaultLogLimit;
      persistLogPreferences();
      refreshLogs("limit");
    });

    el.logsSearchInput.addEventListener("input", (event) => {
      logsState.search = event.target.value;
      applyLogsFilter();
    });

    el.logsClearSearchButton.addEventListener("click", () => {
      logsState.search = "";
      el.logsSearchInput.value = "";
      applyLogsFilter();
    });

    el.logsWrapToggle.addEventListener("change", () => {
      logsState.wrapLines = el.logsWrapToggle.checked;
      persistLogPreferences();
      renderLogsList();
    });

    el.logsTailToggle.addEventListener("change", () => {
      logsState.tailNewest = el.logsTailToggle.checked;
      persistLogPreferences();
    });

    el.logsExpandAllButton.addEventListener("click", () => {
      logsState.filtered.forEach((event) => logsState.openIds.add(event.id));
      renderLogsList();
    });

    el.logsCollapseAllButton.addEventListener("click", () => {
      logsState.openIds.clear();
      renderLogsList();
    });

    el.logsScrollToTopButton.addEventListener("click", () => {
      scrollPaneToTop(el.logsContentPane);
    });

    el.logsContentPane.addEventListener("scroll", () => {
      updatePaneTopButtonVisibility(el.logsContentPane, el.logsScrollToTopButton);
    });

    el.logsGroupSelect.addEventListener("change", async () => {
      logsState.group = el.logsGroupSelect.value;
      logsState.stream = "";
      persistLogPreferences();
      await refreshLogStreams();
      await refreshLogs("group");
    });

    el.logsStreamSelect.addEventListener("change", () => {
      logsState.stream = el.logsStreamSelect.value;
      persistLogPreferences();
      refreshLogs("stream");
    });

    el.logsList.addEventListener("click", async (event) => {
      const button = event.target.closest("button[data-log-action]");

      if (!button) {
        return;
      }

      event.preventDefault();
      event.stopPropagation();

      const logEvent = getLogEvent(button.dataset.id);

      if (!logEvent) {
        return;
      }

      if (button.dataset.logAction === "copy") {
        await copyText(formatLogMessage(logEvent.message));
        setLogsStatus("Log payload copied to the clipboard.", "ok");
      }
    });

    el.secretsRefreshButton.addEventListener("click", () => refreshSecrets("manual"));

    el.secretsAutoToggle.addEventListener("change", () => {
      secretsState.auto = el.secretsAutoToggle.checked;
      persistSecretPreferences();
      scheduleSecretsRefresh();
      renderSecretsStatus();
    });

    el.secretsIntervalSelect.addEventListener("change", () => {
      secretsState.interval = Number(el.secretsIntervalSelect.value) || config.defaultRefreshMs;
      persistSecretPreferences();
      scheduleSecretsRefresh();
      renderSecretsStatus();
    });

    el.secretsSearchInput.addEventListener("input", (event) => {
      secretsState.search = event.target.value;
      applySecretsFilter();
    });

    el.secretsClearSearchButton.addEventListener("click", () => {
      secretsState.search = "";
      el.secretsSearchInput.value = "";
      applySecretsFilter();
    });

    el.secretsExpandAllButton.addEventListener("click", () => {
      secretsState.filtered.forEach((secret) => secretsState.openIds.add(secret.id));
      syncSecretExpansion();
    });

    el.secretsCollapseAllButton.addEventListener("click", () => {
      secretsState.openIds.clear();
      syncSecretExpansion();
    });

    el.secretsScrollToTopButton.addEventListener("click", () => {
      scrollPaneToTop(el.secretsContentPane);
    });

    el.secretsContentPane.addEventListener("scroll", () => {
      updatePaneTopButtonVisibility(el.secretsContentPane, el.secretsScrollToTopButton);
    });

    el.secretsList.addEventListener("click", async (event) => {
      const button = event.target.closest("button[data-secret-action]");

      if (!button) {
        return;
      }

      const id = button.dataset.id;
      const secret = getSecret(id);

      if (!secret) {
        return;
      }

      if (button.dataset.secretAction === "load-value") {
        await ensureSecretValue(id, { force: false });
        return;
      }

      if (button.dataset.secretAction === "reload-value") {
        await ensureSecretValue(id, { force: true });
        return;
      }

      if (button.dataset.secretAction === "copy-value") {
        const entry = await ensureSecretValue(id, { force: false });

        if (entry?.status === "loaded") {
          await copyText(entry.copyValue);
          setSecretsStatus("Secret value copied to the clipboard.", "ok");
        }

        return;
      }

      if (button.dataset.secretAction === "toggle-reveal") {
        toggleSecretReveal(id);
        return;
      }

      if (button.dataset.secretAction === "copy-name") {
        await copyText(secret.name || "");
        setSecretsStatus("Secret name copied to the clipboard.", "ok");
        return;
      }

      if (button.dataset.secretAction === "copy-arn") {
        await copyText(secret.arn || "");
        setSecretsStatus("Secret ARN copied to the clipboard.", "ok");
        return;
      }

      if (button.dataset.secretAction === "copy-env") {
        const entry = await ensureSecretValue(id, { force: false });

        if (entry?.status === "loaded") {
          await copyText(`${secret.name}=${entry.copyValue}`);
          setSecretsStatus("Secret env line copied to the clipboard.", "ok");
        }
      }
    });

    el.s3RefreshButton.addEventListener("click", async () => {
      await refreshS3Buckets();
      await refreshS3("manual");
    });

    el.s3AutoToggle.addEventListener("change", () => {
      s3State.auto = el.s3AutoToggle.checked;
      persistS3Preferences();
      scheduleS3Refresh();
      renderS3Status();
    });

    el.s3IntervalSelect.addEventListener("change", () => {
      s3State.interval = Number(el.s3IntervalSelect.value) || config.defaultRefreshMs;
      persistS3Preferences();
      scheduleS3Refresh();
      renderS3Status();
    });

    el.s3BucketSelect.addEventListener("change", () => {
      s3State.bucket = el.s3BucketSelect.value;
      persistS3Preferences();
      refreshS3("bucket");
    });

    el.s3PrefixInput.addEventListener("keydown", (event) => {
      if (event.key === "Enter") {
        event.preventDefault();
        s3State.prefix = el.s3PrefixInput.value.trim();
        persistS3Preferences();
        refreshS3("prefix");
      }
    });

    el.s3ApplyPrefixButton.addEventListener("click", () => {
      s3State.prefix = el.s3PrefixInput.value.trim();
      persistS3Preferences();
      refreshS3("prefix");
    });

    el.s3SearchInput.addEventListener("input", (event) => {
      s3State.search = event.target.value;
      applyS3Filter();
    });

    el.s3ClearSearchButton.addEventListener("click", () => {
      s3State.search = "";
      el.s3SearchInput.value = "";
      applyS3Filter();
    });

    el.s3ExpandAllButton.addEventListener("click", () => {
      s3State.filtered.forEach((object) => s3State.openIds.add(object.id));
      syncS3Expansion();
    });

    el.s3CollapseAllButton.addEventListener("click", () => {
      s3State.openIds.clear();
      syncS3Expansion();
    });

    el.s3ScrollToTopButton.addEventListener("click", () => {
      scrollPaneToTop(el.s3ContentPane);
    });

    el.s3ContentPane.addEventListener("scroll", () => {
      updatePaneTopButtonVisibility(el.s3ContentPane, el.s3ScrollToTopButton);
    });

    el.s3List.addEventListener("click", async (event) => {
      const button = event.target.closest("button[data-s3-action]");

      if (!button) {
        return;
      }

      const id = button.dataset.id;
      const object = getS3Object(id);

      if (!object) {
        return;
      }

      if (button.dataset.s3Action === "load-preview") {
        await ensureS3Preview(id, { force: false });
        return;
      }

      if (button.dataset.s3Action === "reload-preview") {
        await ensureS3Preview(id, { force: true });
        return;
      }

      if (button.dataset.s3Action === "copy-key") {
        await copyText(object.key);
        setS3Status("Object key copied to the clipboard.", "ok");
        return;
      }

      if (button.dataset.s3Action === "copy-uri") {
        await copyText(`s3://${object.bucket}/${object.key}`);
        setS3Status("S3 URI copied to the clipboard.", "ok");
      }
    });

    document.addEventListener("visibilitychange", () => {
      window.clearTimeout(state.timer);
      window.clearTimeout(logsState.timer);
      window.clearTimeout(secretsState.timer);
      window.clearTimeout(s3State.timer);

      if (document.hidden) {
        renderStatus();
        renderLogsStatus();
        renderSecretsStatus();
        renderS3Status();
        return;
      }

      refreshHealthSummary("visibility");

      if (appState.panel === "s3") {
        if (s3State.auto) {
          refreshS3("visibility");
        } else {
          renderS3Status();
        }
        return;
      }

      if (appState.panel === "secrets") {
        if (secretsState.auto) {
          refreshSecrets("visibility");
        } else {
          renderSecretsStatus();
        }
        return;
      }

      if (appState.panel === "logs") {
        if (logsState.auto) {
          refreshLogs("visibility");
        } else {
          renderLogsStatus();
        }
        return;
      }

      if (state.auto) {
        refreshMessages("visibility");
      } else {
        renderStatus();
      }
    });

    window.addEventListener("keydown", (event) => {
      const isField =
        event.target instanceof HTMLElement &&
        (event.target.matches("input,textarea,select") || event.target.isContentEditable);

      if (!isField && event.key.toLowerCase() === "r") {
        event.preventDefault();

        if (appState.panel === "logs") {
          refreshLogs("keyboard");
          return;
        }

        if (appState.panel === "secrets") {
          refreshSecrets("keyboard");
          return;
        }

        if (appState.panel === "s3") {
          refreshS3("keyboard");
          return;
        }

        refreshMessages("keyboard");
      }
    });

    updatePaneTopButtonVisibility(el.emailsContentPane, el.scrollToTopButton);
    updatePaneTopButtonVisibility(el.logsContentPane, el.logsScrollToTopButton);
    updatePaneTopButtonVisibility(el.secretsContentPane, el.secretsScrollToTopButton);
    updatePaneTopButtonVisibility(el.s3ContentPane, el.s3ScrollToTopButton);
  }

  async function setPanel(panel) {
    if (!panel || panel === appState.panel) {
      if (panel === "logs") {
        await ensureLogsReady();
      } else if (panel === "secrets") {
        await ensureSecretsReady();
      } else if (panel === "s3") {
        await ensureS3Ready();
      }

      renderWorkspace();
      return;
    }

    appState.panel = panel;
    persistPanel();
    renderWorkspace();

    if (panel === "logs") {
      await ensureLogsReady();
    } else if (panel === "secrets") {
      await ensureSecretsReady();
    } else if (panel === "s3") {
      await ensureS3Ready();
    } else if (!state.updatedAt && !state.loading) {
      await refreshMessages("panel");
    }

    scheduleRefresh();
    scheduleLogsRefresh();
    scheduleSecretsRefresh();
    scheduleS3Refresh();
    renderStatus();
    renderLogsStatus();
    renderSecretsStatus();
    renderS3Status();
  }

  function renderWorkspace() {
    el.emailsPanel.hidden = appState.panel !== "emails";
    el.logsPanel.hidden = appState.panel !== "logs";
    el.secretsPanel.hidden = appState.panel !== "secrets";
    el.s3Panel.hidden = appState.panel !== "s3";
    renderHealthStrip();
  }

  async function ensureLogsReady() {
    if (appState.logsReady) {
      return;
    }

    await refreshLogGroups();
    appState.logsReady = !logsState.error;

    if (logsState.group) {
      await refreshLogs("initial");
    }
  }

  async function ensureSecretsReady() {
    if (appState.secretsReady) {
      return;
    }

    await refreshSecrets("initial");
    appState.secretsReady = !secretsState.error;
  }

  async function ensureS3Ready() {
    if (appState.s3Ready) {
      return;
    }

    await refreshS3Buckets();
    appState.s3Ready = !s3State.error;

    if (s3State.bucket) {
      await refreshS3("initial");
    }
  }

  async function refreshMessages(source) {
    if (state.loading) {
      return;
    }

    let shouldRenderList = false;

    state.loading = true;
    state.source = source;
    state.error = "";
    renderStatus();
    renderFetch();

    try {
      const response = await fetch("/api/messages", { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const messages = Array.isArray(payload.messages) ? payload.messages : [];
      const nextIds = new Set(messages.map((message) => message.id));
      const nextSignature = computeListSignature(messages);

      shouldRenderList = nextSignature !== state.listSignature;
      state.newIds =
        state.updatedAt && shouldRenderList
          ? new Set(messages.filter((message) => !state.knownIds.has(message.id)).map((message) => message.id))
          : state.newIds;
      state.knownIds = nextIds;
      state.messages = messages;
      state.duration = payload.fetchDurationMs || 0;
      state.parseErrors = payload.parseErrors || 0;
      state.newest = payload.latestMessageTimestamp || "";
      state.updatedAt = Date.now();
      state.listSignature = nextSignature;

      pruneState();
      applyFilter(shouldRenderList);
      setStatus(`Updated ${messages.length} message${messages.length === 1 ? "" : "s"}.`, "ok");
    } catch (error) {
      state.error = error.message || "Unknown refresh error";
      setStatus(`Refresh failed: ${state.error}`, "bad");
    } finally {
      state.loading = false;
      scheduleRefresh();
      renderAll({ renderList: shouldRenderList });
    }
  }

  async function refreshLogGroups() {
    try {
      const response = await fetch("/api/logs/groups", { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      logsState.groups = Array.isArray(payload.groups) ? payload.groups : [];

      const availableGroups = logsState.groups.map((group) => group.name).filter(Boolean);

      if (!availableGroups.includes(logsState.group)) {
        logsState.group = availableGroups.includes(config.defaultLogGroup)
          ? config.defaultLogGroup
          : availableGroups[0] || "";
      }

      logsState.error = "";
      await refreshLogStreams();
    } catch (error) {
      logsState.error = error.message || "Unknown log group refresh error";
    } finally {
      persistLogPreferences();
      renderLogsAll();
    }
  }

  async function refreshLogStreams() {
    if (!logsState.group) {
      logsState.streams = [];
      logsState.stream = "";
      renderLogsAll();
      return;
    }

    try {
      const response = await fetch(`/api/logs/streams?group=${encodeURIComponent(logsState.group)}`, {
        cache: "no-store"
      });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      logsState.streams = Array.isArray(payload.streams) ? payload.streams : [];

      if (!logsState.streams.some((stream) => stream.name === logsState.stream)) {
        logsState.stream = "";
      }

      logsState.error = "";
    } catch (error) {
      logsState.streams = [];
      logsState.stream = "";
      logsState.error = error.message || "Unknown log stream refresh error";
    } finally {
      persistLogPreferences();
      renderLogsAll();
    }
  }

  async function refreshLogs(source) {
    if (logsState.loading) {
      return;
    }

    if (!appState.logsReady) {
      await ensureLogsReady();
      return;
    }

    if (!logsState.group) {
      logsState.error = logsState.groups.length ? "Choose a log group to load events." : "No log groups found.";
      renderLogsAll();
      return;
    }

    let shouldRenderList = false;

    logsState.loading = true;
    logsState.source = source;
    logsState.error = "";
    renderLogsStatus();
    renderLogsFetch();

    try {
      const params = new URLSearchParams({
        group: logsState.group,
        windowMs: String(logsState.windowMs),
        limit: String(logsState.limit)
      });

      if (logsState.stream) {
        params.set("stream", logsState.stream);
      }

      const response = await fetch(`/api/logs/events?${params.toString()}`, { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const events = Array.isArray(payload.events) ? payload.events : [];
      const nextSignature = computeLogListSignature(events);
      shouldRenderList = nextSignature !== logsState.listSignature;
      logsState.events = events;
      logsState.duration = payload.fetchDurationMs || 0;
      logsState.newest = payload.latestTimestamp || 0;
      logsState.updatedAt = Date.now();
      logsState.searchedLogStreams = payload.searchedLogStreams || (logsState.stream ? 1 : logsState.streams.length);
      logsState.listSignature = nextSignature;

      pruneLogsState();
      applyLogsFilter(shouldRenderList);
      setLogsStatus(`Updated ${logsState.events.length} log event${logsState.events.length === 1 ? "" : "s"}.`, "ok");
    } catch (error) {
      logsState.error = error.message || "Unknown log refresh error";
      setLogsStatus(`Refresh failed: ${logsState.error}`, "bad");
    } finally {
      logsState.loading = false;
      scheduleLogsRefresh();
      renderLogsAll({ renderList: shouldRenderList });

      if (shouldRenderList && logsState.tailNewest) {
        scrollPaneToTop(el.logsContentPane);
      }
    }
  }

  async function refreshSecrets(source) {
    if (secretsState.loading) {
      return;
    }

    let shouldRenderList = false;

    secretsState.loading = true;
    secretsState.source = source;
    secretsState.error = "";
    renderSecretsStatus();
    renderSecretsFetch();

    try {
      const response = await fetch("/api/secrets", { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const items = Array.isArray(payload.secrets) ? payload.secrets : [];
      const nextSignature = computeSecretsListSignature(items);
      shouldRenderList = nextSignature !== secretsState.listSignature;
      secretsState.items = items;
      secretsState.duration = payload.fetchDurationMs || 0;
      secretsState.newest = payload.latestTimestamp || "";
      secretsState.updatedAt = Date.now();
      secretsState.listSignature = nextSignature;

      pruneSecretsState();
      applySecretsFilter(shouldRenderList);
      appState.secretsReady = true;
      setSecretsStatus(`Updated ${items.length} secret${items.length === 1 ? "" : "s"}.`, "ok");
    } catch (error) {
      secretsState.error = error.message || "Unknown secrets refresh error";
      appState.secretsReady = false;
      setSecretsStatus(`Refresh failed: ${secretsState.error}`, "bad");
    } finally {
      secretsState.loading = false;
      scheduleSecretsRefresh();
      renderSecretsAll({ renderList: shouldRenderList });
    }
  }

  async function refreshHealthSummary(source) {
    if (healthState.loading && source === "auto") {
      return;
    }

    healthState.loading = true;
    healthState.source = source;
    renderHealthStrip();

    try {
      const response = await fetch("/api/service-health", { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      healthState.services = payload.services || {};
      healthState.updatedAt = Date.now();
      healthState.error = "";
    } catch (error) {
      healthState.error = error.message || "Unknown health refresh error";
    } finally {
      healthState.loading = false;
      renderHealthStrip();
    }
  }

  async function refreshS3Buckets() {
    try {
      const response = await fetch("/api/s3/buckets", { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      s3State.buckets = Array.isArray(payload.buckets) ? payload.buckets : [];

      const availableBuckets = s3State.buckets.map((bucket) => bucket.name).filter(Boolean);

      if (!availableBuckets.includes(s3State.bucket)) {
        s3State.bucket = availableBuckets.includes(config.defaultS3Bucket)
          ? config.defaultS3Bucket
          : availableBuckets[0] || "";
      }

      s3State.error = "";
    } catch (error) {
      s3State.buckets = [];
      s3State.bucket = "";
      s3State.error = error.message || "Unknown S3 bucket refresh error";
    } finally {
      appState.s3Ready = !s3State.error;
      persistS3Preferences();
      renderS3All();
    }
  }

  async function refreshS3(source) {
    if (s3State.loading) {
      return;
    }

    if (!appState.s3Ready) {
      await ensureS3Ready();
      return;
    }

    if (!s3State.bucket) {
      s3State.error = s3State.buckets.length ? "Choose a bucket to load objects." : "No S3 buckets found.";
      renderS3All();
      return;
    }

    let shouldRenderList = false;

    s3State.loading = true;
    s3State.source = source;
    s3State.error = "";
    renderS3Status();
    renderS3Fetch();

    try {
      const params = new URLSearchParams({
        bucket: s3State.bucket
      });

      if (s3State.prefix) {
        params.set("prefix", s3State.prefix);
      }

      const response = await fetch(`/api/s3/objects?${params.toString()}`, { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const objects = Array.isArray(payload.objects) ? payload.objects : [];
      const nextSignature = computeS3ListSignature(objects);
      shouldRenderList = nextSignature !== s3State.listSignature;
      s3State.objects = objects;
      s3State.duration = payload.fetchDurationMs || 0;
      s3State.newest = payload.latestTimestamp || "";
      s3State.updatedAt = Date.now();
      s3State.listSignature = nextSignature;

      pruneS3State();
      applyS3Filter(shouldRenderList);
      appState.s3Ready = true;
      setS3Status(`Updated ${objects.length} object${objects.length === 1 ? "" : "s"}.`, "ok");
    } catch (error) {
      s3State.error = error.message || "Unknown S3 refresh error";
      appState.s3Ready = false;
      setS3Status(`Refresh failed: ${s3State.error}`, "bad");
    } finally {
      s3State.loading = false;
      scheduleS3Refresh();
      renderS3All({ renderList: shouldRenderList });
    }
  }

  function applyLogsFilter(shouldRenderList = true) {
    const search = logsState.search.trim().toLowerCase();
    logsState.filtered = !search
      ? [...logsState.events]
      : logsState.events.filter((event) => logHaystack(event).includes(search));
    persistLogPreferences();
    renderLogsAll({ renderList: shouldRenderList });
  }

  function applySecretsFilter(shouldRenderList = true) {
    const search = secretsState.search.trim().toLowerCase();
    secretsState.filtered = !search
      ? [...secretsState.items]
      : secretsState.items.filter((secret) => secretHaystack(secret).includes(search));
    persistSecretPreferences();
    renderSecretsAll({ renderList: shouldRenderList });
  }

  function applyS3Filter(shouldRenderList = true) {
    const search = s3State.search.trim().toLowerCase();
    s3State.filtered = !search
      ? [...s3State.objects]
      : s3State.objects.filter((object) => s3Haystack(object).includes(search));
    persistS3Preferences();
    renderS3All({ renderList: shouldRenderList });
  }

  function pruneState() {
    const ids = new Set(state.messages.map((message) => message.id));
    state.openIds = new Set([...state.openIds].filter((id) => ids.has(id)));
    state.newIds = new Set([...state.newIds].filter((id) => ids.has(id)));

    Object.keys(state.views).forEach((id) => {
      if (!ids.has(id)) {
        delete state.views[id];
      }
    });

    Object.keys(state.raw).forEach((id) => {
      if (!ids.has(id)) {
        delete state.raw[id];
      }
    });
  }

  function pruneLogsState() {
    const ids = new Set(logsState.events.map((event) => event.id));
    logsState.openIds = new Set([...logsState.openIds].filter((id) => ids.has(id)));
  }

  function pruneSecretsState() {
    const ids = new Set(secretsState.items.map((secret) => secret.id));
    secretsState.openIds = new Set([...secretsState.openIds].filter((id) => ids.has(id)));

    Object.keys(secretsState.values).forEach((id) => {
      if (!ids.has(id)) {
        delete secretsState.values[id];
      }
    });

    secretsState.revealedIds = new Set([...secretsState.revealedIds].filter((id) => ids.has(id)));
  }

  function pruneS3State() {
    const ids = new Set(s3State.objects.map((object) => object.id));
    s3State.openIds = new Set([...s3State.openIds].filter((id) => ids.has(id)));

    Object.keys(s3State.previews).forEach((id) => {
      if (!ids.has(id)) {
        delete s3State.previews[id];
      }
    });
  }

  function applyFilter(shouldRenderList = true) {
    const search = state.search.trim().toLowerCase();
    state.filtered = !search
      ? [...state.messages]
      : state.messages.filter((message) => haystack(message).includes(search));
    persistEmailPreferences();
    renderAll({ renderList: shouldRenderList });
  }

  function computeListSignature(messages) {
    return messages
      .map((message) =>
        [
          message.id,
          message.timestampMs || 0,
          message.rawSizeBytes || 0,
          message.attachmentCount || 0,
          message.hasHtml ? 1 : 0,
          message.preview || "",
          message.parseError || ""
        ].join("::")
      )
      .join("|");
  }

  function computeLogListSignature(events) {
    return events
      .map((event) =>
        [event.id, event.timestamp || 0, event.ingestionTime || 0, event.logStreamName || "", event.message || ""].join(
          "::"
        )
      )
      .join("|");
  }

  function computeSecretsListSignature(items) {
    return items
      .map((secret) =>
        [
          secret.id,
          secret.name || "",
          secret.arn || "",
          secret.description || "",
          secret.lastChangedDate || "",
          secret.createdDate || "",
          secret.rotationEnabled ? 1 : 0,
          secret.owningService || "",
          secret.primaryRegion || "",
          secret.versionCount || 0,
          secret.tagCount || 0
        ].join("::")
      )
      .join("|");
  }

  function computeS3ListSignature(objects) {
    return objects
      .map((object) =>
        [object.id, object.key || "", object.size || 0, object.lastModified || "", object.etag || ""].join("::")
      )
      .join("|");
  }

  function haystack(message) {
    return [
      message.subject,
      message.from,
      message.to,
      message.replyTo,
      message.preview,
      message.textContent,
      message.region,
      ...(message.attachments || []).flatMap((attachment) => [attachment.filename, attachment.contentType])
    ]
      .filter(Boolean)
      .join(" ")
      .toLowerCase();
  }

  function logHaystack(event) {
    return [event.logStreamName, event.message, event.preview].filter(Boolean).join(" ").toLowerCase();
  }

  function secretHaystack(secret) {
    return [
      secret.name,
      secret.arn,
      secret.description,
      secret.primaryRegion,
      secret.owningService,
      ...(secret.tags || []).flatMap((tag) => [tag.key, tag.value])
    ]
      .filter(Boolean)
      .join(" ")
      .toLowerCase();
  }

  function s3Haystack(object) {
    return [object.bucket, object.key, object.storageClass, object.etag].filter(Boolean).join(" ").toLowerCase();
  }

  function scheduleRefresh() {
    window.clearTimeout(state.timer);

    if (appState.panel !== "emails" || !state.auto || document.hidden || state.loading) {
      return;
    }

    state.timer = window.setTimeout(() => refreshMessages("auto"), state.interval);
  }

  function scheduleLogsRefresh() {
    window.clearTimeout(logsState.timer);

    if (appState.panel !== "logs" || !logsState.auto || document.hidden || logsState.loading) {
      return;
    }

    logsState.timer = window.setTimeout(() => refreshLogs("auto"), logsState.interval);
  }

  function scheduleSecretsRefresh() {
    window.clearTimeout(secretsState.timer);

    if (appState.panel !== "secrets" || !secretsState.auto || document.hidden || secretsState.loading) {
      return;
    }

    secretsState.timer = window.setTimeout(() => refreshSecrets("auto"), secretsState.interval);
  }

  function scheduleS3Refresh() {
    window.clearTimeout(s3State.timer);

    if (appState.panel !== "s3" || !s3State.auto || document.hidden || s3State.loading) {
      return;
    }

    s3State.timer = window.setTimeout(() => refreshS3("auto"), s3State.interval);
  }

  function renderAll(options = {}) {
    const { renderList: shouldRenderList = true } = options;
    renderStats();
    renderFetch();
    renderStatus();
    if (shouldRenderList) {
      renderList();
    }
    renderLiveClock();
  }

  function renderLogsAll(options = {}) {
    const { renderList: shouldRenderList = true } = options;
    renderLogsFilters();
    renderLogsStats();
    renderLogsFetch();
    renderLogsStatus();
    if (shouldRenderList) {
      renderLogsList();
    }
    renderLogsLiveClock();
  }

  function renderSecretsAll(options = {}) {
    const { renderList: shouldRenderList = true } = options;
    renderSecretsStats();
    renderSecretsFetch();
    renderSecretsStatus();
    if (shouldRenderList) {
      renderSecretsList();
    }
    renderSecretsLiveClock();
  }

  function renderS3All(options = {}) {
    const { renderList: shouldRenderList = true } = options;
    renderS3Filters();
    renderS3Stats();
    renderS3Fetch();
    renderS3Status();
    if (shouldRenderList) {
      renderS3List();
    }
    renderS3LiveClock();
  }

  function renderHealthStrip() {
    const serviceOrder = [
      { key: "emails", panel: "emails", icon: "✉️", label: "SES Emails", shortLabel: "SES" },
      { key: "logs", panel: "logs", icon: "📜", label: "CloudWatch Logs", shortLabel: "Logs" },
      { key: "secrets", panel: "secrets", icon: "🔐", label: "Secrets Manager", shortLabel: "Secrets" },
      { key: "s3", panel: "s3", icon: "🪣", label: "S3 Explorer", shortLabel: "S3" }
    ];

    el.healthStrip.innerHTML = serviceOrder
      .map((service) => {
        const entry = healthState.services?.[service.key];
        const toneClass = healthState.loading && !entry ? "warn" : entry?.ok ? "ok" : entry ? "bad" : "";
        const activeClass = service.panel === appState.panel ? "active" : "";
        const className = ["healthBadge", toneClass, activeClass].filter(Boolean).join(" ");
        const summary = entry?.summary || (healthState.loading ? "Checking..." : "Waiting");
        const detail = entry?.detail || (healthState.error ? healthState.error : "Not checked yet");
        const updatedMeta = healthState.updatedAt
          ? `Updated ${formatRelative(healthState.updatedAt)} via ${healthState.source}`
          : "";
        const titleParts = [`${service.label}: ${detail}`];

        if (updatedMeta) {
          titleParts.push(updatedMeta);
        }

        return `<button class="${className}" type="button" data-health-panel="${service.panel}" aria-pressed="${service.panel === appState.panel ? "true" : "false"}" title="${escapeHtml(
          titleParts.join(" • ")
        )}"><span class="healthBadgeName">${service.icon} ${escapeHtml(service.shortLabel)}</span><span class="healthBadgeSummary">${escapeHtml(summary)}</span></button>`;
      })
      .join("");
  }

  function renderStats() {
    el.totalStat.textContent = String(state.messages.length);
    el.visibleStat.textContent = `${state.filtered.length} visible${state.search ? " after search" : ""}`;
    el.newStat.textContent = String(state.newIds.size);
    el.newestStat.textContent = state.newest ? formatDateTime(state.newest) : "No messages";
  }

  function renderLogsFilters() {
    const groups = logsState.groups.length
      ? logsState.groups.map((group) => `<option value="${escapeHtml(group.name)}">${escapeHtml(group.name)}</option>`)
      : ['<option value="">No log groups</option>'];
    const streams = [
      '<option value="">All streams</option>',
      ...logsState.streams.map(
        (stream) => `<option value="${escapeHtml(stream.name)}">${escapeHtml(stream.name)}</option>`
      )
    ];

    el.logsGroupSelect.innerHTML = groups.join("");
    el.logsStreamSelect.innerHTML = streams.join("");

    if (logsState.group) {
      el.logsGroupSelect.value = logsState.group;
    }

    el.logsStreamSelect.value = logsState.stream;
    el.logsWrapToggle.checked = logsState.wrapLines;
    el.logsTailToggle.checked = logsState.tailNewest;
  }

  function renderS3Filters() {
    const bucketOptions = s3State.buckets.length
      ? s3State.buckets.map(
          (bucket) => `<option value="${escapeHtml(bucket.name)}">${escapeHtml(bucket.name)}</option>`
        )
      : ['<option value="">No buckets</option>'];

    el.s3BucketSelect.innerHTML = bucketOptions.join("");

    if (s3State.bucket) {
      el.s3BucketSelect.value = s3State.bucket;
    }

    el.s3PrefixInput.value = s3State.prefix;
    el.s3SearchInput.value = s3State.search;
  }

  function renderLogsStats() {
    el.logsTotalStat.textContent = String(logsState.events.length);
    el.logsVisibleStat.textContent = `${logsState.filtered.length} visible${logsState.search ? " after search" : ""}`;
    el.logsStreamsStat.textContent = String(logsState.streams.length || logsState.searchedLogStreams || 0);
    el.logsNewestStat.textContent = logsState.newest ? formatDateTime(logsState.newest) : "No events";
  }

  function renderSecretsStats() {
    el.secretsTotalStat.textContent = String(secretsState.items.length);
    el.secretsVisibleStat.textContent = `${secretsState.filtered.length} visible${secretsState.search ? " after search" : ""}`;
    el.secretsLoadedStat.textContent = String(
      Object.values(secretsState.values).filter((entry) => entry?.status === "loaded").length
    );
    el.secretsNewestStat.textContent = secretsState.newest ? formatDateTime(secretsState.newest) : "No secrets";
  }

  function renderS3Stats() {
    el.s3TotalStat.textContent = String(s3State.objects.length);
    el.s3VisibleStat.textContent = `${s3State.filtered.length} visible${s3State.search ? " after search" : ""}`;
    el.s3BucketsStat.textContent = String(s3State.buckets.length);
    el.s3NewestStat.textContent = s3State.newest ? formatDateTime(s3State.newest) : "No objects";
  }

  function renderFetch() {
    if (state.loading) {
      el.fetchStat.textContent = "Refreshing...";
      el.fetchDetail.textContent = `Endpoint: ${config.endpoint}`;
      return;
    }

    if (state.error) {
      el.fetchStat.textContent = "Needs attention";
      el.fetchDetail.textContent = state.error;
      return;
    }

    if (!state.updatedAt) {
      el.fetchStat.textContent = "Idle";
      el.fetchDetail.textContent = `Endpoint: ${config.endpoint}`;
      return;
    }

    el.fetchStat.textContent = `${state.duration}ms`;
    el.fetchDetail.textContent = `${state.parseErrors} parse error${state.parseErrors === 1 ? "" : "s"}. Endpoint: ${config.endpoint}`;
  }

  function renderLogsFetch() {
    if (logsState.loading) {
      el.logsFetchStat.textContent = "Refreshing...";
      el.logsFetchDetail.textContent = `Endpoint: ${config.cloudWatchEndpoint} (${config.cloudWatchRegion})`;
      return;
    }

    if (logsState.error) {
      el.logsFetchStat.textContent = "Needs attention";
      el.logsFetchDetail.textContent = logsState.error;
      return;
    }

    if (!logsState.updatedAt) {
      el.logsFetchStat.textContent = "Idle";
      el.logsFetchDetail.textContent = `Endpoint: ${config.cloudWatchEndpoint} (${config.cloudWatchRegion})`;
      return;
    }

    el.logsFetchStat.textContent = `${logsState.duration}ms`;
    el.logsFetchDetail.textContent = `${logsState.group || "No group selected"}. Endpoint: ${config.cloudWatchEndpoint}`;
  }

  function renderSecretsFetch() {
    if (secretsState.loading) {
      el.secretsFetchStat.textContent = "Refreshing...";
      el.secretsFetchDetail.textContent = `Endpoint: ${config.secretsEndpoint} (${config.secretsRegion})`;
      return;
    }

    if (secretsState.error) {
      el.secretsFetchStat.textContent = "Needs attention";
      el.secretsFetchDetail.textContent = secretsState.error;
      return;
    }

    if (!secretsState.updatedAt) {
      el.secretsFetchStat.textContent = "Idle";
      el.secretsFetchDetail.textContent = `Endpoint: ${config.secretsEndpoint} (${config.secretsRegion})`;
      return;
    }

    el.secretsFetchStat.textContent = `${secretsState.duration}ms`;
    el.secretsFetchDetail.textContent = `Endpoint: ${config.secretsEndpoint} (${config.secretsRegion})`;
  }

  function renderS3Fetch() {
    if (s3State.loading) {
      el.s3FetchStat.textContent = "Refreshing...";
      el.s3FetchDetail.textContent = `Endpoint: ${config.s3Endpoint} (${config.s3Region})`;
      return;
    }

    if (s3State.error) {
      el.s3FetchStat.textContent = "Needs attention";
      el.s3FetchDetail.textContent = s3State.error;
      return;
    }

    if (!s3State.updatedAt) {
      el.s3FetchStat.textContent = "Idle";
      el.s3FetchDetail.textContent = `Endpoint: ${config.s3Endpoint} (${config.s3Region})`;
      return;
    }

    el.s3FetchStat.textContent = `${s3State.duration}ms`;
    el.s3FetchDetail.textContent = `${s3State.bucket || "No bucket selected"}. Endpoint: ${config.s3Endpoint}`;
  }

  function renderStatus() {
    el.statusChip.className = "status";

    if (state.loading) {
      el.statusChip.classList.add("warn");
      el.statusChip.textContent = "Refreshing messages...";
      return;
    }

    if (state.error) {
      el.statusChip.classList.add("bad");
      el.statusChip.textContent = `Refresh failed: ${state.error}`;
      return;
    }

    if (!state.auto) {
      el.statusChip.textContent = "Live refresh paused";
      return;
    }

    if (document.hidden) {
      el.statusChip.classList.add("warn");
      el.statusChip.textContent = "Tab hidden, live refresh paused";
      return;
    }

    if (!state.updatedAt) {
      el.statusChip.textContent = "Waiting for first refresh...";
      return;
    }

    const seconds = Math.max(0, Math.ceil((state.updatedAt + state.interval - Date.now()) / 1000));
    el.statusChip.classList.add("ok");
    el.statusChip.textContent = `Live refresh on, next check in ${seconds}s`;
  }

  function renderLogsStatus() {
    el.logsStatusChip.className = "status";

    if (logsState.loading) {
      el.logsStatusChip.classList.add("warn");
      el.logsStatusChip.textContent = "Refreshing logs...";
      return;
    }

    if (logsState.error) {
      el.logsStatusChip.classList.add("bad");
      el.logsStatusChip.textContent = `Refresh failed: ${logsState.error}`;
      return;
    }

    if (!logsState.auto) {
      el.logsStatusChip.textContent = "Live refresh paused";
      return;
    }

    if (document.hidden) {
      el.logsStatusChip.classList.add("warn");
      el.logsStatusChip.textContent = "Tab hidden, live refresh paused";
      return;
    }

    if (!logsState.updatedAt) {
      el.logsStatusChip.textContent = "Waiting for first refresh...";
      return;
    }

    const seconds = Math.max(0, Math.ceil((logsState.updatedAt + logsState.interval - Date.now()) / 1000));
    el.logsStatusChip.classList.add("ok");
    el.logsStatusChip.textContent = `Live refresh on, next check in ${seconds}s`;
  }

  function renderSecretsStatus() {
    el.secretsStatusChip.className = "status";

    if (secretsState.loading) {
      el.secretsStatusChip.classList.add("warn");
      el.secretsStatusChip.textContent = "Refreshing secrets...";
      return;
    }

    if (secretsState.error) {
      el.secretsStatusChip.classList.add("bad");
      el.secretsStatusChip.textContent = `Refresh failed: ${secretsState.error}`;
      return;
    }

    if (!secretsState.auto) {
      el.secretsStatusChip.textContent = "Live refresh paused";
      return;
    }

    if (document.hidden) {
      el.secretsStatusChip.classList.add("warn");
      el.secretsStatusChip.textContent = "Tab hidden, live refresh paused";
      return;
    }

    if (!secretsState.updatedAt) {
      el.secretsStatusChip.textContent = "Waiting for first refresh...";
      return;
    }

    const seconds = Math.max(0, Math.ceil((secretsState.updatedAt + secretsState.interval - Date.now()) / 1000));
    el.secretsStatusChip.classList.add("ok");
    el.secretsStatusChip.textContent = `Live refresh on, next check in ${seconds}s`;
  }

  function renderS3Status() {
    el.s3StatusChip.className = "status";

    if (s3State.loading) {
      el.s3StatusChip.classList.add("warn");
      el.s3StatusChip.textContent = "Refreshing objects...";
      return;
    }

    if (s3State.error) {
      el.s3StatusChip.classList.add("bad");
      el.s3StatusChip.textContent = `Refresh failed: ${s3State.error}`;
      return;
    }

    if (!s3State.auto) {
      el.s3StatusChip.textContent = "Live refresh paused";
      return;
    }

    if (document.hidden) {
      el.s3StatusChip.classList.add("warn");
      el.s3StatusChip.textContent = "Tab hidden, live refresh paused";
      return;
    }

    if (!s3State.updatedAt) {
      el.s3StatusChip.textContent = "Waiting for first refresh...";
      return;
    }

    const seconds = Math.max(0, Math.ceil((s3State.updatedAt + s3State.interval - Date.now()) / 1000));
    el.s3StatusChip.classList.add("ok");
    el.s3StatusChip.textContent = `Live refresh on, next check in ${seconds}s`;
  }

  function renderLiveClock() {
    if (!state.updatedAt) {
      el.updatedStat.textContent = "Not refreshed yet";
      return;
    }

    el.updatedStat.textContent = `Updated ${formatRelative(state.updatedAt)} via ${state.source}`;
    renderStatus();
  }

  function renderLogsLiveClock() {
    if (!logsState.updatedAt) {
      el.logsUpdatedStat.textContent = "Not refreshed yet";
      return;
    }

    el.logsUpdatedStat.textContent = `Updated ${formatRelative(logsState.updatedAt)} via ${logsState.source}`;
    renderLogsStatus();
  }

  function renderSecretsLiveClock() {
    if (!secretsState.updatedAt) {
      el.secretsUpdatedStat.textContent = "Not refreshed yet";
      return;
    }

    el.secretsUpdatedStat.textContent = `Updated ${formatRelative(secretsState.updatedAt)} via ${secretsState.source}`;
    renderSecretsStatus();
  }

  function renderS3LiveClock() {
    if (!s3State.updatedAt) {
      el.s3UpdatedStat.textContent = "Not refreshed yet";
      return;
    }

    el.s3UpdatedStat.textContent = `Updated ${formatRelative(s3State.updatedAt)} via ${s3State.source}`;
    renderS3Status();
  }

  function renderList() {
    el.banner.hidden = !state.error;
    el.banner.textContent = state.error ? `Refresh failed: ${state.error}` : "";

    if (!state.filtered.length) {
      el.list.innerHTML = "";
      el.empty.hidden = false;
      el.empty.textContent = state.messages.length
        ? "No messages match the current search."
        : "No emails yet. Send one through LocalStack SES and refresh.";
      updatePaneTopButtonVisibility(el.emailsContentPane, el.scrollToTopButton);
      return;
    }

    el.empty.hidden = true;
    el.list.innerHTML = state.filtered.map(renderCard).join("");
    bindCardToggles();
    syncCardExpansion();
    updatePaneTopButtonVisibility(el.emailsContentPane, el.scrollToTopButton);
  }

  function renderLogsList() {
    el.logsBanner.hidden = !logsState.error;
    el.logsBanner.textContent = logsState.error ? `Refresh failed: ${logsState.error}` : "";

    if (!logsState.group && !logsState.groups.length) {
      el.logsList.innerHTML = "";
      el.logsEmpty.hidden = false;
      el.logsEmpty.textContent = "No CloudWatch log groups found in LocalStack yet.";
      updatePaneTopButtonVisibility(el.logsContentPane, el.logsScrollToTopButton);
      return;
    }

    if (!logsState.filtered.length) {
      el.logsList.innerHTML = "";
      el.logsEmpty.hidden = false;
      el.logsEmpty.textContent = logsState.events.length
        ? "No log events match the current search."
        : "No log events found for the selected group, stream, and time window.";
      updatePaneTopButtonVisibility(el.logsContentPane, el.logsScrollToTopButton);
      return;
    }

    el.logsEmpty.hidden = true;
    el.logsList.innerHTML = logsState.filtered.map((event) => renderLogEvent(event)).join("");
    bindLogToggles();
    updatePaneTopButtonVisibility(el.logsContentPane, el.logsScrollToTopButton);
  }

  function renderSecretsList() {
    el.secretsBanner.hidden = !secretsState.error;
    el.secretsBanner.textContent = secretsState.error ? `Refresh failed: ${secretsState.error}` : "";

    if (!secretsState.filtered.length) {
      el.secretsList.innerHTML = "";
      el.secretsEmpty.hidden = false;
      el.secretsEmpty.textContent = secretsState.items.length
        ? "No secrets match the current search."
        : "No Secrets Manager entries found in LocalStack yet.";
      updatePaneTopButtonVisibility(el.secretsContentPane, el.secretsScrollToTopButton);
      return;
    }

    el.secretsEmpty.hidden = true;
    el.secretsList.innerHTML = secretsState.filtered.map((secret) => renderSecretCard(secret)).join("");
    bindSecretToggles();
    syncSecretExpansion();
    updatePaneTopButtonVisibility(el.secretsContentPane, el.secretsScrollToTopButton);
  }

  function renderS3List() {
    el.s3Banner.hidden = !s3State.error;
    el.s3Banner.textContent = s3State.error ? `Refresh failed: ${s3State.error}` : "";

    if (!s3State.bucket && !s3State.buckets.length) {
      el.s3List.innerHTML = "";
      el.s3Empty.hidden = false;
      el.s3Empty.textContent = "No S3 buckets found in LocalStack yet.";
      updatePaneTopButtonVisibility(el.s3ContentPane, el.s3ScrollToTopButton);
      return;
    }

    if (!s3State.filtered.length) {
      el.s3List.innerHTML = "";
      el.s3Empty.hidden = false;
      el.s3Empty.textContent = s3State.objects.length
        ? "No S3 objects match the current search."
        : "No S3 objects found for the selected bucket and prefix.";
      updatePaneTopButtonVisibility(el.s3ContentPane, el.s3ScrollToTopButton);
      return;
    }

    el.s3Empty.hidden = true;
    el.s3List.innerHTML = s3State.filtered.map((object) => renderS3ObjectCard(object)).join("");
    bindS3Toggles();
    syncS3Expansion();
    updatePaneTopButtonVisibility(el.s3ContentPane, el.s3ScrollToTopButton);
  }

  function renderLogEvent(event) {
    const level = detectLogLevel(event);
    const levelTag = level ? `<span class="tag ${level.className}">${escapeHtml(level.label)}</span>` : "";

    return `
      <details class="logEvent" data-id="${escapeHtml(event.id)}" ${logsState.openIds.has(event.id) ? "open" : ""}>
        <summary class="logSummary">
          <div class="logSummaryTop">
            <div class="logMeta">
              <span class="time">${escapeHtml(formatDateTime(event.timestamp))}</span>
              <span class="tag logTag" title="${escapeHtml(event.logStreamName || "Unknown stream")}">${escapeHtml(event.logStreamName || "Unknown stream")}</span>
              ${levelTag}
            </div>
            <div class="logSummaryActions">
              <button class="mini logCopyButton" type="button" data-log-action="copy" data-id="${escapeHtml(event.id)}">📋 Copy JSON</button>
              <span class="tag">${escapeHtml(formatRelative(event.timestamp || Date.now()))}</span>
            </div>
          </div>
          <p class="logPreview jsonSyntax">${renderLogPreviewContent(event)}</p>
        </summary>
        <div class="logBody ${logsState.wrapLines ? "" : "wrapOff"}">
          <pre class="jsonSyntax">${renderLogBodyContent(event.message)}</pre>
        </div>
      </details>
    `;
  }

  function renderSecretCard(secret) {
    const valueState = secretsState.values[secret.id];
    const tags = [];

    if (secret.owningService) {
      tags.push(`<span class="tag secretTag">${escapeHtml(secret.owningService)}</span>`);
    }

    if (secret.primaryRegion) {
      tags.push(`<span class="tag secretTag">${escapeHtml(secret.primaryRegion)}</span>`);
    }

    if (secret.rotationEnabled) {
      tags.push('<span class="tag secretTag">Rotation on</span>');
    } else {
      tags.push('<span class="tag">Rotation off</span>');
    }

    if (secret.tagCount) {
      tags.push(`<span class="tag secretTag">${secret.tagCount} tag${secret.tagCount === 1 ? "" : "s"}</span>`);
    }

    if (valueState?.status === "loaded") {
      tags.push(`<span class="tag secretTag">${escapeHtml(valueState.label)}</span>`);
    }

    if (valueState?.status === "error") {
      tags.push('<span class="tag bad">Value load failed</span>');
    }

    return `
      <details class="card secretCard" data-id="${escapeHtml(secret.id)}">
        <summary class="summary secretSummary">
          <div class="top">
            <div class="head">
              <h2>🔐 ${escapeHtml(secret.name)}</h2>
              <p class="meta">${escapeHtml(secret.description || secret.arn || "No description")}</p>
            </div>
            <span class="time">${escapeHtml(formatDateTime(secret.lastChangedDate || secret.createdDate))}</span>
          </div>
          <div class="tags">${tags.join("")}</div>
          <p class="preview">${escapeHtml(buildSecretPreview(secret))}</p>
        </summary>
        <div class="body secretBody">
          <dl class="grid">
            ${metaCard("Name", secret.name)}
            ${metaCard("ARN", secret.arn || "Not available")}
            ${metaCard("Description", secret.description || "None")}
            ${metaCard("Last changed", formatDateTime(secret.lastChangedDate || secret.createdDate))}
            ${metaCard("Created", formatDateTime(secret.createdDate))}
            ${metaCard("Last accessed", formatDateTime(secret.lastAccessedDate))}
            ${metaCard("Primary region", secret.primaryRegion || "Not set")}
            ${metaCard("Owning service", secret.owningService || "Not set")}
          </dl>

          <div class="secretValuePanel">
            ${renderSecretValuePanel(secret, valueState)}
          </div>
        </div>
      </details>
    `;
  }

  function renderS3ObjectCard(object) {
    const previewState = s3State.previews[object.id];
    const tags = [
      `<span class="tag bucketTag">${escapeHtml(object.bucket)}</span>`,
      `<span class="tag bucketTag">${escapeHtml(formatBytes(object.size))}</span>`
    ];

    if (object.storageClass) {
      tags.push(`<span class="tag bucketTag">${escapeHtml(object.storageClass)}</span>`);
    }

    if (previewState?.status === "loaded") {
      tags.push(`<span class="tag bucketTag">${escapeHtml(previewState.previewType)}</span>`);
    }

    if (previewState?.status === "error") {
      tags.push('<span class="tag bad">Preview failed</span>');
    }

    return `
      <details class="card s3Card" data-id="${escapeHtml(object.id)}">
        <summary class="summary s3Summary">
          <div class="top">
            <div class="head">
              <h2>🪣 ${escapeHtml(object.key)}</h2>
              <p class="meta">${escapeHtml(object.bucket)} • ${escapeHtml(formatBytes(object.size))}</p>
            </div>
            <span class="time">${escapeHtml(formatDateTime(object.lastModified))}</span>
          </div>
          <div class="tags">${tags.join("")}</div>
          <p class="preview">${escapeHtml(buildS3Preview(object))}</p>
        </summary>
        <div class="body s3Body">
          <div class="toolbar">
            <div class="actions">
              <button class="mini" type="button" data-s3-action="copy-key" data-id="${escapeHtml(object.id)}">📋 Copy key</button>
              <button class="mini" type="button" data-s3-action="copy-uri" data-id="${escapeHtml(object.id)}">🔗 Copy URI</button>
              <a class="mini attachmentLink" href="/api/s3/download?bucket=${encodeURIComponent(object.bucket)}&key=${encodeURIComponent(object.key)}">⬇️ Download</a>
            </div>
          </div>

          <dl class="grid">
            ${metaCard("Bucket", object.bucket)}
            ${metaCard("Key", object.key)}
            ${metaCard("Size", formatBytes(object.size))}
            ${metaCard("Modified", formatDateTime(object.lastModified))}
            ${metaCard("Storage class", object.storageClass || "STANDARD")}
            ${metaCard("ETag", object.etag || "Not available")}
          </dl>

          <div class="s3PreviewPanel">${renderS3PreviewPanel(object, previewState)}</div>
        </div>
      </details>
    `;
  }

  function bindLogToggles() {
    el.logsList.querySelectorAll(".logEvent").forEach((details) => {
      details.addEventListener("toggle", () => {
        const id = details.dataset.id;

        if (!id) {
          return;
        }

        if (details.open) {
          logsState.openIds.add(id);
        } else {
          logsState.openIds.delete(id);
        }
      });
    });
  }

  function bindSecretToggles() {
    el.secretsList.querySelectorAll(".secretCard").forEach((details) => {
      details.addEventListener("toggle", () => {
        const id = details.dataset.id;

        if (!id) {
          return;
        }

        if (details.open) {
          secretsState.openIds.add(id);
          ensureSecretValue(id, { force: false });
        } else {
          secretsState.openIds.delete(id);
        }
      });
    });
  }

  function bindS3Toggles() {
    el.s3List.querySelectorAll(".s3Card").forEach((details) => {
      details.addEventListener("toggle", () => {
        const id = details.dataset.id;

        if (!id) {
          return;
        }

        if (details.open) {
          s3State.openIds.add(id);
          ensureS3Preview(id, { force: false });
        } else {
          s3State.openIds.delete(id);
        }
      });
    });
  }

  function bindCardToggles() {
    el.list.querySelectorAll(".card").forEach((details) => {
      details.addEventListener("toggle", () => {
        const id = details.dataset.id;

        if (!id) {
          return;
        }

        if (details.open) {
          state.openIds.add(id);
        } else {
          state.openIds.delete(id);
        }

        hydrate(details, getMessage(id));
      });
    });
  }

  function renderCard(message) {
    const view = state.views[message.id] || (message.hasHtml ? "rendered" : "text");
    const tags = [];

    if (state.newIds.has(message.id)) {
      tags.push('<span class="tag new">New</span>');
    }

    if (message.attachmentCount) {
      tags.push(
        `<span class="tag">${message.attachmentCount} attachment${message.attachmentCount === 1 ? "" : "s"}</span>`
      );
    }

    tags.push(`<span class="tag">${message.hasHtml ? "HTML" : "Text only"}</span>`);

    if (message.parseError) {
      tags.push('<span class="tag bad">Parse issue</span>');
    }

    return `
      <details class="card ${state.newIds.has(message.id) ? "new" : ""}" data-id="${escapeHtml(message.id)}">
        <summary class="summary">
          <div class="top">
            <div class="head">
              <h2>${escapeHtml(message.subject)}</h2>
              <p class="meta">${escapeHtml(message.from)} to ${escapeHtml(message.to)}</p>
            </div>
            <span class="time">${escapeHtml(formatDateTime(message.timestamp))}</span>
          </div>
          <div class="tags">${tags.join("")}</div>
          <p class="preview">${escapeHtml(message.preview)}</p>
        </summary>
        <div class="body">
          <div class="toolbar">
            <div class="tabs">
              ${
                message.hasHtml
                  ? `<button class="tab ${view === "rendered" ? "active" : ""}" type="button" data-action="view" data-view="rendered" data-id="${escapeHtml(message.id)}">Rendered</button>`
                  : ""
              }
              <button class="tab ${view === "text" ? "active" : ""}" type="button" data-action="view" data-view="text" data-id="${escapeHtml(message.id)}">Text</button>
              <button class="tab ${view === "raw" ? "active" : ""}" type="button" data-action="view" data-view="raw" data-id="${escapeHtml(message.id)}">Raw</button>
            </div>
            <div class="actions">
              <button class="mini" type="button" data-action="copy-raw" data-id="${escapeHtml(message.id)}">📋 Copy raw</button>
            </div>
          </div>

          <dl class="grid">
            ${metaCard("From", message.from)}
            ${metaCard("To", message.to)}
            ${metaCard("Reply-To", message.replyTo || "None")}
            ${metaCard("Sent", formatDateTime(message.timestamp))}
            ${metaCard("Region", message.region || "Unknown region")}
            ${metaCard("LocalStack Id", message.id)}
            ${metaCard("Message-Id", message.messageId || "Not available")}
            ${metaCard("Raw size", formatBytes(message.rawSizeBytes))}
            ${message.parseError ? metaCard("Parse error", message.parseError) : ""}
          </dl>

          ${
            message.attachments?.length
              ? `<div class="attachments">${message.attachments
                  .map((attachment) => {
                    const size = attachment.size ? `, ${formatBytes(attachment.size)}` : "";
                    const icon = resolveAttachmentIcon(attachment);
                    return `<a class="attachment attachmentLink" href="/api/messages/${encodeURIComponent(message.id)}/attachments/${attachment.index}" download="${escapeHtml(attachment.filename)}" title="Download ${escapeHtml(attachment.filename)}">${icon} ${escapeHtml(attachment.filename)} (${escapeHtml(attachment.contentType)}${escapeHtml(size)})</a>`;
                  })
                  .join("")}</div>`
              : ""
          }

          <div class="panel">${renderPanel(message, view)}</div>
        </div>
      </details>
    `;
  }

  function renderPanel(message, view) {
    if (view === "rendered" && message.hasHtml) {
      return `<iframe title="${escapeHtml(message.subject)}" data-frame sandbox="" referrerpolicy="no-referrer"></iframe>`;
    }

    if (view === "raw") {
      const raw = state.raw[message.id];

      if (!raw) {
        return `<div class="placeholder">Raw MIME source is loaded on demand.<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-action="load-raw" data-id="${escapeHtml(message.id)}">Load raw source</button></div></div>`;
      }

      if (raw.status === "loading") {
        return '<div class="placeholder">Loading raw source...</div>';
      }

      if (raw.status === "error") {
        return `<div class="inlineError">Unable to load raw source: ${escapeHtml(raw.error)}<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-action="load-raw" data-id="${escapeHtml(message.id)}">Retry</button></div></div>`;
      }

      return `<pre>${escapeHtml(raw.value)}</pre>`;
    }

    return `<pre>${escapeHtml(message.textContent || "No plain-text content available for this message.")}</pre>`;
  }

  function renderSecretValuePanel(secret, valueState) {
    if (!valueState) {
      return `<div class="placeholder">Secret values are loaded on demand.<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-secret-action="load-value" data-id="${escapeHtml(secret.id)}">Load value</button></div></div>`;
    }

    if (valueState.status === "loading") {
      return '<div class="placeholder">Loading secret value...</div>';
    }

    if (valueState.status === "error") {
      return `<div class="inlineError">Unable to load secret value: ${escapeHtml(valueState.error)}<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-secret-action="reload-value" data-id="${escapeHtml(secret.id)}">Retry</button></div></div>`;
    }

    const revealed = secretsState.revealedIds.has(secret.id);
    const maskedHtml = escapeHtml(maskSecretValue(valueState.copyValue));

    return `
      <div class="toolbar">
        <div class="tags">
          <span class="tag secretTag">${escapeHtml(valueState.label)}</span>
          ${
            valueState.versionId
              ? `<span class="tag secretTag">Version ${escapeHtml(valueState.versionId.slice(0, 8))}</span>`
              : ""
          }
          ${
            valueState.versionStages.length
              ? `<span class="tag secretTag">${escapeHtml(valueState.versionStages.join(", "))}</span>`
              : ""
          }
        </div>
        <div class="actions">
          <button class="mini" type="button" data-secret-action="toggle-reveal" data-id="${escapeHtml(secret.id)}">${revealed ? "🙈 Hide" : "👁️ Reveal"}</button>
          <button class="mini" type="button" data-secret-action="copy-value" data-id="${escapeHtml(secret.id)}">📋 Copy value</button>
          <button class="mini" type="button" data-secret-action="copy-env" data-id="${escapeHtml(secret.id)}">🧪 Copy env</button>
          <button class="mini" type="button" data-secret-action="copy-name" data-id="${escapeHtml(secret.id)}">🏷️ Copy name</button>
          <button class="mini" type="button" data-secret-action="copy-arn" data-id="${escapeHtml(secret.id)}">🔗 Copy ARN</button>
          <button class="mini" type="button" data-secret-action="reload-value" data-id="${escapeHtml(secret.id)}">🔄 Reload</button>
        </div>
      </div>
      <pre class="${revealed && valueState.isJson ? "jsonSyntax" : ""}">${revealed ? valueState.displayHtml : maskedHtml}</pre>
    `;
  }

  function renderS3PreviewPanel(object, previewState) {
    if (!previewState) {
      return `<div class="placeholder">Object previews load on demand.<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-s3-action="load-preview" data-id="${escapeHtml(object.id)}">Load preview</button></div></div>`;
    }

    if (previewState.status === "loading") {
      return '<div class="placeholder">Loading object preview...</div>';
    }

    if (previewState.status === "error") {
      return `<div class="inlineError">Unable to load object preview: ${escapeHtml(previewState.error)}<div class="actions" style="margin-top:12px"><button class="mini" type="button" data-s3-action="reload-preview" data-id="${escapeHtml(object.id)}">Retry</button></div></div>`;
    }

    const truncatedTag = previewState.truncated ? '<span class="tag bucketTag">Preview truncated</span>' : "";
    let previewContent = `<pre>No inline preview available for this object type.</pre>`;

    if (previewState.previewType === "image" && previewState.imageDataUrl) {
      previewContent = `<img class="s3PreviewImage" alt="${escapeHtml(object.key)}" src="${previewState.imageDataUrl}">`;
    } else if (previewState.previewType === "json") {
      previewContent = `<pre class="jsonSyntax">${highlightJsonText(prettyJsonOrText(previewState.previewText))}</pre>`;
    } else if (previewState.previewType === "text" || previewState.previewType === "html") {
      previewContent = `<pre>${escapeHtml(previewState.previewText || "No preview text available.")}</pre>`;
    }

    return `
      <div class="toolbar">
        <div class="tags">
          <span class="tag bucketTag">${escapeHtml(previewState.previewType)}</span>
          ${truncatedTag}
          ${previewState.contentType ? `<span class="tag bucketTag">${escapeHtml(previewState.contentType)}</span>` : ""}
        </div>
        <div class="actions">
          <button class="mini" type="button" data-s3-action="reload-preview" data-id="${escapeHtml(object.id)}">🔄 Reload</button>
          <a class="mini attachmentLink" href="/api/s3/download?bucket=${encodeURIComponent(object.bucket)}&key=${encodeURIComponent(object.key)}">⬇️ Download</a>
        </div>
      </div>
      ${previewContent}
    `;
  }

  function metaCard(label, value) {
    return `<div class="metaCard"><dt>${escapeHtml(label)}</dt><dd>${escapeHtml(value)}</dd></div>`;
  }

  function syncCardExpansion() {
    const applyCardState = () => {
      el.list.querySelectorAll(".card").forEach((details) => {
        const id = details.dataset.id;
        const shouldOpen = Boolean(id && state.openIds.has(id));

        if (shouldOpen && !details.open) {
          details.open = true;
        }

        if (!shouldOpen && details.open) {
          details.open = false;
          return;
        }

        if (shouldOpen) {
          hydrate(details, getMessage(id));
        }
      });
    };

    applyCardState();
    window.requestAnimationFrame(applyCardState);
  }

  function syncSecretExpansion() {
    const applySecretState = () => {
      el.secretsList.querySelectorAll(".secretCard").forEach((details) => {
        const id = details.dataset.id;
        const shouldOpen = Boolean(id && secretsState.openIds.has(id));

        if (shouldOpen && !details.open) {
          details.open = true;
        }

        if (!shouldOpen && details.open) {
          details.open = false;
          return;
        }

        if (shouldOpen) {
          ensureSecretValue(id, { force: false });
        }
      });
    };

    applySecretState();
    window.requestAnimationFrame(applySecretState);
  }

  function syncS3Expansion() {
    const applyS3State = () => {
      el.s3List.querySelectorAll(".s3Card").forEach((details) => {
        const id = details.dataset.id;
        const shouldOpen = Boolean(id && s3State.openIds.has(id));

        if (shouldOpen && !details.open) {
          details.open = true;
        }

        if (!shouldOpen && details.open) {
          details.open = false;
          return;
        }

        if (shouldOpen) {
          ensureS3Preview(id, { force: false });
        }
      });
    };

    applyS3State();
    window.requestAnimationFrame(applyS3State);
  }

  function resolveAttachmentIcon(attachment) {
    const filename = String(attachment?.filename || "").toLowerCase();
    const contentType = String(attachment?.contentType || "").toLowerCase();

    if (filename.endsWith(".pdf") || contentType.includes("pdf")) {
      return "📄";
    }

    if (
      [".doc", ".docx", ".txt", ".rtf", ".md"].some((extension) => filename.endsWith(extension)) ||
      contentType.includes("word") ||
      contentType.startsWith("text/")
    ) {
      return "📝";
    }

    if (
      [".xls", ".xlsx", ".csv"].some((extension) => filename.endsWith(extension)) ||
      contentType.includes("sheet") ||
      contentType.includes("csv")
    ) {
      return "📊";
    }

    if (
      filename.endsWith(".json") ||
      filename.endsWith(".xml") ||
      filename.endsWith(".yaml") ||
      filename.endsWith(".yml")
    ) {
      return "🧾";
    }

    if (contentType.startsWith("image/")) {
      return "🖼️";
    }

    if (contentType.startsWith("audio/")) {
      return "🎵";
    }

    if (contentType.startsWith("video/")) {
      return "🎬";
    }

    if (
      [".zip", ".rar", ".7z", ".tar", ".gz"].some((extension) => filename.endsWith(extension)) ||
      contentType.includes("zip") ||
      contentType.includes("compressed")
    ) {
      return "🗜️";
    }

    return "📎";
  }

  function hydrate(details, message) {
    if (!details || !details.open || !message) {
      return;
    }

    const view = state.views[message.id] || (message.hasHtml ? "rendered" : "text");

    if (view !== "rendered" || !message.hasHtml) {
      return;
    }

    const iframe = details.querySelector("[data-frame]");

    if (iframe) {
      iframe.referrerPolicy = "no-referrer";
      iframe.sandbox = "";
      iframe.srcdoc = message.renderedHtml || "";
    }
  }

  function getMessage(id) {
    return state.messages.find((message) => message.id === id);
  }

  function getLogEvent(id) {
    return logsState.events.find((event) => event.id === id);
  }

  function getSecret(id) {
    return secretsState.items.find((secret) => secret.id === id);
  }

  function getS3Object(id) {
    return s3State.objects.find((object) => object.id === id);
  }

  async function loadRaw(id) {
    if (state.raw[id]?.status === "loaded") {
      return state.raw[id].value;
    }

    if (state.raw[id]?.status === "loading") {
      return null;
    }

    state.raw[id] = { status: "loading" };
    renderList();

    try {
      const response = await fetch(`/api/messages/${encodeURIComponent(id)}/raw`, { cache: "no-store" });

      if (!response.ok) {
        throw new Error((await response.text()) || `Request failed with ${response.status}`);
      }

      const value = await response.text();
      state.raw[id] = { status: "loaded", value };
      return value;
    } catch (error) {
      state.raw[id] = { status: "error", error: error.message || "Unknown raw load error" };
      setStatus("Could not load the raw message source.", "bad");
      return null;
    } finally {
      renderList();
    }
  }

  async function ensureSecretValue(id, options = {}) {
    const { force = false } = options;

    if (!id) {
      return null;
    }

    if (!force && secretsState.values[id]?.status === "loaded") {
      return secretsState.values[id];
    }

    if (secretsState.values[id]?.status === "loading") {
      return null;
    }

    secretsState.values[id] = { status: "loading" };
    renderSecretsAll();

    try {
      const response = await fetch(`/api/secrets/value?id=${encodeURIComponent(id)}`, { cache: "no-store" });

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const secretString = typeof payload.secretString === "string" ? payload.secretString : "";
      const secretBinary = typeof payload.secretBinary === "string" ? payload.secretBinary : "";
      const parsedString = secretString ? tryParseJsonText(secretString) : { ok: false, value: null };
      const entry = {
        status: "loaded",
        label: secretBinary ? "Binary" : parsedString.ok ? "JSON" : secretString ? "Text" : "Empty",
        copyValue: secretBinary
          ? secretBinary
          : parsedString.ok
            ? JSON.stringify(parsedString.value, null, 2)
            : secretString || "No secret value.",
        displayHtml: secretBinary
          ? escapeHtml(secretBinary)
          : parsedString.ok
            ? highlightJsonText(JSON.stringify(parsedString.value, null, 2))
            : escapeHtml(secretString || "No secret value."),
        isJson: parsedString.ok,
        isBinary: Boolean(secretBinary),
        versionId: payload.versionId || "",
        versionStages: Array.isArray(payload.versionStages) ? payload.versionStages : [],
        createdDate: payload.createdDate || "",
        arn: payload.arn || "",
        name: payload.name || ""
      };

      secretsState.values[id] = entry;
      return entry;
    } catch (error) {
      secretsState.values[id] = {
        status: "error",
        error: error.message || "Unknown secret value error"
      };
      setSecretsStatus("Could not load the secret value.", "bad");
      return null;
    } finally {
      renderSecretsAll();
    }
  }

  async function ensureS3Preview(id, options = {}) {
    const { force = false } = options;

    if (!id) {
      return null;
    }

    if (!force && s3State.previews[id]?.status === "loaded") {
      return s3State.previews[id];
    }

    if (s3State.previews[id]?.status === "loading") {
      return null;
    }

    const object = getS3Object(id);

    if (!object) {
      return null;
    }

    s3State.previews[id] = { status: "loading" };
    renderS3All();

    try {
      const response = await fetch(
        `/api/s3/object?bucket=${encodeURIComponent(object.bucket)}&key=${encodeURIComponent(object.key)}`,
        { cache: "no-store" }
      );

      if (!response.ok) {
        const payload = await safeJson(response);
        throw new Error(payload?.details || payload?.error || `Request failed with ${response.status}`);
      }

      const payload = await response.json();
      const entry = {
        status: "loaded",
        previewType: payload.previewType || "binary",
        previewText: payload.previewText || "",
        imageDataUrl: payload.imageDataUrl || "",
        contentType: payload.contentType || "",
        contentLength: payload.contentLength || 0,
        truncated: Boolean(payload.truncated),
        metadata: payload.metadata || {}
      };

      s3State.previews[id] = entry;
      return entry;
    } catch (error) {
      s3State.previews[id] = {
        status: "error",
        error: error.message || "Unknown S3 preview error"
      };
      setS3Status("Could not load the S3 object preview.", "bad");
      return null;
    } finally {
      renderS3All();
    }
  }

  async function copyText(value) {
    try {
      await navigator.clipboard.writeText(value);
    } catch {
      const input = document.createElement("textarea");
      input.value = value;
      input.setAttribute("readonly", "");
      input.style.position = "fixed";
      input.style.opacity = "0";
      document.body.appendChild(input);
      input.select();
      document.execCommand("copy");
      document.body.removeChild(input);
    }
  }

  function setStatus(message, tone) {
    el.statusChip.className = "status";

    if (tone) {
      el.statusChip.classList.add(tone);
    }

    el.statusChip.textContent = message;
  }

  function setLogsStatus(message, tone) {
    el.logsStatusChip.className = "status";

    if (tone) {
      el.logsStatusChip.classList.add(tone);
    }

    el.logsStatusChip.textContent = message;
  }

  function setSecretsStatus(message, tone) {
    el.secretsStatusChip.className = "status";

    if (tone) {
      el.secretsStatusChip.classList.add(tone);
    }

    el.secretsStatusChip.textContent = message;
  }

  function setS3Status(message, tone) {
    el.s3StatusChip.className = "status";

    if (tone) {
      el.s3StatusChip.classList.add(tone);
    }

    el.s3StatusChip.textContent = message;
  }

  function getInitialPanel() {
    const storedPanel = readStoredValue(PANEL_STORAGE_KEY);
    return ["emails", "logs", "secrets", "s3"].includes(storedPanel) ? storedPanel : "emails";
  }

  function getInitialTheme() {
    const storedTheme = readStoredValue(THEME_STORAGE_KEY);

    if (storedTheme === "dark" || storedTheme === "light") {
      return storedTheme;
    }

    return window.matchMedia?.("(prefers-color-scheme: dark)")?.matches ? "dark" : "light";
  }

  function applyTheme(theme) {
    const nextTheme = theme === "dark" ? "dark" : "light";
    appState.theme = nextTheme;
    document.body.dataset.theme = nextTheme;

    try {
      window.localStorage.setItem(THEME_STORAGE_KEY, nextTheme);
    } catch {}

    renderThemeToggle();
  }

  function renderThemeToggle() {
    if (!el.themeToggle) {
      return;
    }

    const isDark = appState.theme === "dark";
    el.themeToggle.textContent = isDark ? "🌙 Dark theme" : "☀️ Light theme";
    el.themeToggle.setAttribute("aria-pressed", isDark ? "true" : "false");
    el.themeToggle.setAttribute("aria-label", isDark ? "Switch to light theme" : "Switch to dark theme");
    el.themeToggle.title = isDark ? "Switch to light theme" : "Switch to dark theme";
  }

  function persistPanel() {
    writeStoredValue(PANEL_STORAGE_KEY, appState.panel);
  }

  function persistEmailPreferences() {
    writeStoredJson(EMAIL_PREFERENCES_STORAGE_KEY, {
      search: state.search,
      auto: state.auto,
      interval: state.interval
    });
  }

  function persistLogPreferences() {
    writeStoredJson(LOG_PREFERENCES_STORAGE_KEY, {
      group: logsState.group,
      stream: logsState.stream,
      search: logsState.search,
      auto: logsState.auto,
      interval: logsState.interval,
      windowMs: logsState.windowMs,
      limit: logsState.limit,
      wrapLines: logsState.wrapLines,
      tailNewest: logsState.tailNewest
    });
  }

  function persistSecretPreferences() {
    writeStoredJson(SECRET_PREFERENCES_STORAGE_KEY, {
      search: secretsState.search,
      auto: secretsState.auto,
      interval: secretsState.interval
    });
  }

  function persistS3Preferences() {
    writeStoredJson(S3_PREFERENCES_STORAGE_KEY, {
      bucket: s3State.bucket,
      prefix: s3State.prefix,
      search: s3State.search,
      auto: s3State.auto,
      interval: s3State.interval
    });
  }

  function resetSavedState() {
    [
      THEME_STORAGE_KEY,
      PANEL_STORAGE_KEY,
      EMAIL_PREFERENCES_STORAGE_KEY,
      LOG_PREFERENCES_STORAGE_KEY,
      SECRET_PREFERENCES_STORAGE_KEY,
      S3_PREFERENCES_STORAGE_KEY
    ].forEach((key) => {
      try {
        window.localStorage.removeItem(key);
      } catch {}
    });

    window.location.reload();
  }

  function getStoredPreferences(key) {
    try {
      const rawValue = window.localStorage.getItem(key);

      if (!rawValue) {
        return null;
      }

      const parsedValue = JSON.parse(rawValue);
      return parsedValue && typeof parsedValue === "object" && !Array.isArray(parsedValue) ? parsedValue : null;
    } catch {
      return null;
    }
  }

  function readStoredValue(key) {
    try {
      return window.localStorage.getItem(key);
    } catch {
      return null;
    }
  }

  function writeStoredValue(key, value) {
    try {
      window.localStorage.setItem(key, String(value));
    } catch {}
  }

  function writeStoredJson(key, value) {
    try {
      window.localStorage.setItem(key, JSON.stringify(value));
    } catch {}
  }

  function getStoredText(value, fallback = "") {
    return typeof value === "string" ? value : fallback;
  }

  function getStoredBoolean(value, fallback) {
    return typeof value === "boolean" ? value : fallback;
  }

  function getStoredNumber(value, allowedValues, fallback) {
    const normalizedValue = Number(value);
    return Number.isFinite(normalizedValue) && allowedValues.includes(normalizedValue) ? normalizedValue : fallback;
  }

  function scrollPaneToTop(element) {
    if (!element) {
      return;
    }

    element.scrollTo({ top: 0, behavior: "smooth" });
  }

  function updatePaneTopButtonVisibility(pane, button) {
    if (!pane || !button) {
      return;
    }

    button.classList.toggle("visible", pane.scrollTop > 140);
  }

  function formatDateTime(value) {
    if (!value) {
      return "Unknown time";
    }

    const date = new Date(value);
    return Number.isNaN(date.getTime())
      ? "Unknown time"
      : new Intl.DateTimeFormat(undefined, { dateStyle: "medium", timeStyle: "short" }).format(date);
  }

  function formatRelative(timestampMs) {
    const seconds = Math.max(1, Math.round((Date.now() - timestampMs) / 1000));

    if (seconds < 60) {
      return `${seconds}s ago`;
    }

    const minutes = Math.round(seconds / 60);

    if (minutes < 60) {
      return `${minutes}m ago`;
    }

    const hours = Math.round(minutes / 60);

    if (hours < 24) {
      return `${hours}h ago`;
    }

    return `${Math.round(hours / 24)}d ago`;
  }

  function formatBytes(value) {
    if (!value) {
      return "0 B";
    }

    const units = ["B", "KB", "MB", "GB"];
    let size = value;
    let index = 0;

    while (size >= 1024 && index < units.length - 1) {
      size /= 1024;
      index += 1;
    }

    return `${index === 0 ? size : size.toFixed(1)} ${units[index]}`;
  }

  function formatLogMessage(message) {
    const value = String(message || "").trim();

    if (!value) {
      return "No log payload.";
    }

    try {
      return JSON.stringify(JSON.parse(value), null, 2);
    } catch {
      return value;
    }
  }

  function buildSecretPreview(secret) {
    const fragments = [];

    if (secret.description) {
      fragments.push(secret.description);
    }

    if (secret.owningService) {
      fragments.push(`Service: ${secret.owningService}`);
    }

    if (secret.primaryRegion) {
      fragments.push(`Region: ${secret.primaryRegion}`);
    }

    if (secret.tagCount) {
      fragments.push(`${secret.tagCount} tag${secret.tagCount === 1 ? "" : "s"}`);
    }

    if (!fragments.length) {
      fragments.push("No description or tags yet.");
    }

    return fragments.join(" • ");
  }

  function toggleSecretReveal(id) {
    if (secretsState.revealedIds.has(id)) {
      secretsState.revealedIds.delete(id);
    } else {
      secretsState.revealedIds.add(id);
    }

    renderSecretsAll();
  }

  function maskSecretValue(value) {
    const source = String(value || "");

    if (!source) {
      return "Secret is loaded but empty.";
    }

    const lines = source.split("\n");
    return lines.map((line) => "•".repeat(Math.max(12, Math.min(line.length || 0, 48)))).join("\n");
  }

  function buildS3Preview(object) {
    const fragments = [];

    if (object.storageClass) {
      fragments.push(object.storageClass);
    }

    fragments.push(formatBytes(object.size));

    if (object.etag) {
      fragments.push(`ETag ${object.etag.slice(0, 12)}`);
    }

    return fragments.join(" • ");
  }

  function prettyJsonOrText(value) {
    const parsed = tryParseJsonText(value);
    return parsed.ok ? JSON.stringify(parsed.value, null, 2) : String(value || "");
  }

  function detectLogLevel(event) {
    const parsed = tryParseJsonText(event?.message);
    const candidates = parsed.ok
      ? [parsed.value?.level, parsed.value?.severity, parsed.value?.logLevel, parsed.value?.status, parsed.value?.lvl]
      : [String(event?.message || "").match(/\b(error|warn|warning|info|debug|trace|fatal)\b/i)?.[0] || ""];
    const normalized = String(candidates.find(Boolean) || "").toLowerCase();

    if (["fatal", "error", "critical"].includes(normalized)) {
      return { label: normalized.toUpperCase(), className: "levelError" };
    }

    if (["warn", "warning"].includes(normalized)) {
      return { label: "WARN", className: "levelWarn" };
    }

    if (["info", "notice"].includes(normalized)) {
      return { label: normalized.toUpperCase(), className: "levelInfo" };
    }

    if (["debug", "trace"].includes(normalized)) {
      return { label: normalized.toUpperCase(), className: "levelDebug" };
    }

    return null;
  }

  function renderLogPreviewContent(event) {
    const parsedLog = tryParseJsonText(event?.message);

    if (!parsedLog.ok) {
      return escapeHtml(event?.preview || "No preview available.");
    }

    const compactJson = JSON.stringify(parsedLog.value);
    const previewText = compactJson.length > 220 ? `${compactJson.slice(0, 217)}...` : compactJson;
    return highlightJsonText(previewText);
  }

  function renderLogBodyContent(message) {
    const parsedLog = tryParseJsonText(message);

    if (!parsedLog.ok) {
      return escapeHtml(formatLogMessage(message));
    }

    return highlightJsonText(JSON.stringify(parsedLog.value, null, 2));
  }

  function tryParseJsonText(message) {
    const value = String(message || "").trim();

    if (!value) {
      return { ok: false, value: null };
    }

    try {
      return { ok: true, value: JSON.parse(value) };
    } catch {
      return { ok: false, value: null };
    }
  }

  function highlightJsonText(value) {
    const source = String(value ?? "");
    const tokenRegex =
      /("(\\u[\da-fA-F]{4}|\\[^u]|[^\\"])*"(\s*:)?|\btrue\b|\bfalse\b|\bnull\b|-?\d+(?:\.\d+)?(?:[eE][+\-]?\d+)?)/g;
    let html = "";
    let lastIndex = 0;

    for (const match of source.matchAll(tokenRegex)) {
      const [token] = match;
      const index = match.index ?? 0;
      let className = "jsonNumber";

      html += escapeHtml(source.slice(lastIndex, index));

      if (token.endsWith(":")) {
        className = "jsonKey";
      } else if (token === "true" || token === "false") {
        className = "jsonBoolean";
      } else if (token === "null") {
        className = "jsonNull";
      } else if (token.startsWith('"')) {
        className = "jsonString";
      }

      html += `<span class="${className}">${escapeHtml(token)}</span>`;
      lastIndex = index + token.length;
    }

    html += escapeHtml(source.slice(lastIndex));
    return html;
  }

  function escapeHtml(value) {
    return String(value ?? "")
      .replace(/&/g, "&amp;")
      .replace(/</g, "&lt;")
      .replace(/>/g, "&gt;")
      .replace(/"/g, "&quot;")
      .replace(/'/g, "&#39;");
  }

  async function safeJson(response) {
    try {
      return await response.json();
    } catch {
      return null;
    }
  }
}

app.listen(PORT, () => {
  console.log(`LocalStack inspector is running on http://localhost:${PORT}`);
  console.log(`Watching LocalStack SES endpoint at ${SES_ENDPOINT}`);
  console.log(`Watching LocalStack CloudWatch Logs endpoint at ${CLOUDWATCH_ENDPOINT} (${CLOUDWATCH_REGION})`);
  console.log(`Watching LocalStack Secrets Manager endpoint at ${SECRETS_ENDPOINT} (${SECRETS_REGION})`);
  console.log(`Watching LocalStack S3 endpoint at ${S3_ENDPOINT} (${S3_REGION})`);
});