const path = require("path");
require("dotenv").config({
  path: path.resolve(process.cwd(), `.env.${process.env.NODE_ENV || "development"}`)
});

const client = require("../graphql-client/graphql-client").client;
const queries = require("../graphql-client/queries");
const { phone } = require("phone");
const { admin } = require("../firebase/firebase-handler");
const logger = require("../utils/logger");
const InstanceManager = require("../utils/instanceMgr").default;

exports.receive = async (req, res) => {
  const {
    ioRedis,
    ioHelpers: { getBodyshopRoom, getBodyshopConversationRoom }
  } = req;

  logger.log("sms-inbound", "DEBUG", "api", null, {
    msid: req.body.SmsMessageSid,
    text: req.body.Body,
    image: !!req.body.MediaUrl0,
    image_path: generateMediaArray(req.body)
  });

  if (!req.body || !req.body.MessagingServiceSid || !req.body.SmsMessageSid) {
    logger.log("sms-inbound-error", "ERROR", "api", null, {
      msid: req.body.SmsMessageSid,
      text: req.body.Body,
      image: !!req.body.MediaUrl0,
      image_path: generateMediaArray(req.body),
      type: "malformed-request"
    });
    res.status(400).json({ success: false, error: "Malformed Request" });
    return;
  }

  try {
    const response = await client.request(queries.FIND_BODYSHOP_BY_MESSAGING_SERVICE_SID, {
      mssid: req.body.MessagingServiceSid,
      phone: phone(req.body.From).phoneNumber
    });

    let newMessage = {
      msid: req.body.SmsMessageSid,
      text: req.body.Body,
      image: !!req.body.MediaUrl0,
      image_path: generateMediaArray(req.body)
    };

    if (response.bodyshops[0]) {
      const bodyshop = response.bodyshops[0];
      if (bodyshop.conversations.length === 0) {
        newMessage.conversation = {
          data: {
            bodyshopid: bodyshop.id,
            phone_num: phone(req.body.From).phoneNumber,
            archived: false
          }
        };

        try {
          const insertresp = await client.request(queries.RECEIVE_MESSAGE, { msg: newMessage });
          const createdConversation = insertresp?.insert_messages?.returning?.[0]?.conversation || null;
          const message = insertresp?.insert_messages?.returning?.[0];

          if (!createdConversation) {
            throw new Error("Conversation data is missing from the response.");
          }

          const broadcastRoom = getBodyshopRoom(createdConversation.bodyshop.id);
          const conversationRoom = getBodyshopConversationRoom({
            bodyshopId: message.conversation.bodyshop.id,
            conversationId: message.conversation.id
          });

          ioRedis.to(broadcastRoom).emit("new-message-summary", {
            isoutbound: false,
            existingConversation: false,
            newConversation: createdConversation,
            conversationId: createdConversation.id,
            updated_at: message.updated_at,
            msid: message.sid,
            summary: true
          });

          ioRedis.to(conversationRoom).emit("new-message-detailed", {
            newMessage: message,
            isoutbound: false,
            newConversation: createdConversation,
            existingConversation: false,
            conversationId: createdConversation.id,
            summary: false
          });

          logger.log("sms-inbound-success", "DEBUG", "api", null, {
            newMessage,
            createdConversation
          });

          res.status(200).send("");
          return;
        } catch (e) {
          handleError(req, e, res, "RECEIVE_MESSAGE");
          return;
        }
      } else if (bodyshop.conversations.length === 1) {
        newMessage.conversationid = bodyshop.conversations[0].id;
      } else {
        logger.log("sms-inbound-error", "ERROR", "api", null, {
          msid: req.body.SmsMessageSid,
          text: req.body.Body,
          image: !!req.body.MediaUrl0,
          image_path: generateMediaArray(req.body),
          messagingServiceSid: req.body.MessagingServiceSid,
          type: "duplicate-phone"
        });
        res.status(400).json({ success: false, error: "Duplicate phone number" });
        return;
      }

      try {
        const insertresp = await client.request(queries.INSERT_MESSAGE, {
          msg: newMessage,
          conversationid: newMessage.conversationid
        });

        const message = insertresp.insert_messages.returning[0];
        const data = {
          type: "messaging-inbound",
          conversationid: message.conversationid || "",
          text: message.text || "",
          messageid: message.id || "",
          phone_num: message.conversation.phone_num || ""
        };

        const fcmresp = await admin.messaging().send({
          topic: `${message.conversation.bodyshop.imexshopid}-messaging`,
          notification: {
            title: InstanceManager({
              imex: `ImEX Online Message - ${data.phone_num}`,
              rome: `Rome Online Message - ${data.phone_num}`,
              promanager: `ProManager Message - ${data.phone_num}`
            }),
            body: message.image_path ? `Image ${message.text}` : message.text
          },
          data
        });

        logger.log("sms-inbound-success", "DEBUG", "api", null, {
          newMessage,
          fcmresp
        });

        const broadcastRoom = getBodyshopRoom(message.conversation.bodyshop.id);
        const conversationRoom = getBodyshopConversationRoom({
          bodyshopId: message.conversation.bodyshop.id,
          conversationId: message.conversation.id
        });

        ioRedis.to(broadcastRoom).emit("new-message-summary", {
          isoutbound: false,
          existingConversation: true,
          conversationId: message.conversationid,
          updated_at: message.updated_at,
          msid: message.sid,
          summary: true
        });

        ioRedis.to(conversationRoom).emit("new-message-detailed", {
          newMessage: message,
          isoutbound: false,
          existingConversation: true,
          conversationId: message.conversationid,
          summary: false
        });

        res.status(200).send("");
      } catch (e) {
        handleError(req, e, res, "INSERT_MESSAGE");
      }
    }
  } catch (e) {
    handleError(req, e, res, "FIND_BODYSHOP_BY_MESSAGING_SERVICE_SID");
  }
};

const generateMediaArray = (body) => {
  const { NumMedia } = body;
  if (parseInt(NumMedia) > 0) {
    const ret = [];
    for (let i = 0; i < parseInt(NumMedia); i++) {
      ret.push(body[`MediaUrl${i}`]);
    }
    return ret;
  } else {
    return null;
  }
};

const handleError = (req, error, res, context) => {
  logger.log("sms-inbound-error", "ERROR", "api", null, {
    msid: req.body.SmsMessageSid,
    text: req.body.Body,
    image: !!req.body.MediaUrl0,
    image_path: generateMediaArray(req.body),
    messagingServiceSid: req.body.MessagingServiceSid,
    context,
    error
  });

  res.status(500).json({ error: error.message || "Internal Server Error" });
};