// no-dd-sa:javascript-code-style/assignment-name
// Handler for VehicleDamageEstimateChgRq

const client = require("../../../graphql-client/graphql-client").client;
const { parseXml, normalizeXmlObject } = require("../partsManagementUtils");
const { extractPartsTaxRates } = require("./lib/extractPartsTaxRates");

const {
  GET_JOB_BY_CLAIM,
  UPDATE_JOB_BY_ID,
  DELETE_JOBLINES_BY_IDS,
  INSERT_JOBLINES
} = require("../partsManagement.queries");

/**
 * Finds a job by shop ID and claim number.
 * @param shopId
 * @param claimNum
 * @param logger
 * @returns {Promise<*|null>}
 */
const findJob = async (shopId, claimNum, logger) => {
  try {
    const { jobs } = await client.request(GET_JOB_BY_CLAIM, { shopid: shopId, clm_no: claimNum });
    return jobs?.[0] || null;
  } catch (err) {
    logger.log("parts-job-lookup-failed", "error", null, null, { error: err });
    return null;
  }
};

/**
 * Extracts updated job data from the request payload.
 * @param rq
 * @returns {{comment: (number|((comment: Comment, helper: postcss.Helpers) => (Promise<void> | void))|string|null), clm_no: null, status: (*|null), policy_no: (*|null)}}
 */
const extractUpdatedJobData = (rq) => {
  const doc = rq.DocumentInfo || {};
  const claim = rq.ClaimInfo || {};

  const policyNo = claim.PolicyInfo?.PolicyInfo?.PolicyNum || claim.PolicyInfo?.PolicyNum || null;

  const out = {
    comment: doc.Comment || null,
    clm_no: claim.ClaimNum || null,
    status: claim.ClaimStatus || null,
    policy_no: policyNo
  };

  // If ProfileInfo provided in ChangeRq, update parts_tax_rates to stay in sync with AddRq behavior
  if (rq.ProfileInfo) {
    out.parts_tax_rates = extractPartsTaxRates(rq.ProfileInfo);
  }

  return out;
};

/**
 * Extracts updated job lines from the request payload, mirroring the AddRq splitting rules:
 * - PART lines carry only part pricing (act_price) and related fields
 * - If LaborInfo exists on a part line, add a separate LABOR line at unq_seq + 400000
 * - If RefinishLaborInfo exists, add a separate LABOR line at unq_seq + 500000 with mod_lbr_ty=LAR
 * - SUBLET lines become PAS part_type with act_price=SubletAmount
 */
const extractUpdatedJobLines = (addsChgs = {}, jobId) => {
  const linesIn = Array.isArray(addsChgs.DamageLineInfo) ? addsChgs.DamageLineInfo : [addsChgs.DamageLineInfo || {}];

  const coerceManual = (val) =>
    val === true || val === 1 || val === "1" || (typeof val === "string" && val.toUpperCase() === "Y");

  const out = [];

  for (const line of linesIn) {
    if (!line || Object.keys(line).length === 0) continue;

    const partInfo = line.PartInfo || {};
    const laborInfo = line.LaborInfo || {};
    const refinishInfo = line.RefinishLaborInfo || {};
    const subletInfo = line.SubletInfo || {};

    const base = {
      jobid: jobId,
      line_no: parseInt(line.LineNum || 0, 10),
      unq_seq: parseInt(line.UniqueSequenceNum || 0, 10),
      status: line.LineStatusCode || null,
      line_desc: line.LineDesc || null,
      notes: line.LineMemo || null,
      manual_line: line.ManualLineInd !== undefined ? coerceManual(line.ManualLineInd) : null
    };

    const hasPart = Object.keys(partInfo).length > 0;
    const hasLaborOnly = Object.keys(laborInfo).length > 0 && !hasPart && Object.keys(subletInfo).length === 0;
    const hasSublet = Object.keys(subletInfo).length > 0;

    if (hasPart) {
      const price = parseFloat(partInfo.PartPrice || partInfo.ListPrice || 0);
      out.push({
        ...base,
        part_type: partInfo.PartType ? String(partInfo.PartType).toUpperCase() : null,
        part_qty: parseFloat(partInfo.Quantity || 0) || 1,
        oem_partno: partInfo.OEMPartNum || partInfo.PartNum || null,
        db_price: isNaN(price) ? 0 : price,
        act_price: isNaN(price) ? 0 : price
      });

      // Split any attached labor on the part line into a derived labor jobline
      const hrs = parseFloat(laborInfo.LaborHours || 0);
      const amt = parseFloat(laborInfo.LaborAmt || 0);
      const hasLabor =
        (!!laborInfo.LaborType && String(laborInfo.LaborType).length > 0) ||
        (!isNaN(hrs) && hrs !== 0) ||
        (!isNaN(amt) && amt !== 0);
      if (hasLabor) {
        out.push({
          ...base,
          unq_seq: (parseInt(line.UniqueSequenceNum || 0, 10) || 0) + 400000,
          mod_lbr_ty: laborInfo.LaborType || null,
          mod_lb_hrs: isNaN(hrs) ? 0 : hrs,
          lbr_op: laborInfo.LaborOperation || null,
          lbr_amt: isNaN(amt) ? 0 : amt
        });
      }
    } else if (hasSublet) {
      out.push({
        ...base,
        part_type: "PAS",
        part_qty: 1,
        act_price: parseFloat(subletInfo.SubletAmount || 0) || 0
      });
    }

    // Labor-only line (no PartInfo): still upsert as a labor entry
    if (hasLaborOnly) {
      out.push({
        ...base,
        mod_lbr_ty: laborInfo.LaborType || null,
        mod_lb_hrs: parseFloat(laborInfo.LaborHours || 0) || 0,
        lbr_op: laborInfo.LaborOperation || null,
        lbr_amt: parseFloat(laborInfo.LaborAmt || 0) || 0
      });
    }

    // Separate refinish labor line
    if (Object.keys(refinishInfo).length > 0) {
      const rHrs = parseFloat(refinishInfo.LaborHours || 0);
      const rAmt = parseFloat(refinishInfo.LaborAmt || 0);
      if (!isNaN(rHrs) || !isNaN(rAmt)) {
        out.push({
          ...base,
          unq_seq: (parseInt(line.UniqueSequenceNum || 0, 10) || 0) + 500000,
          line_desc: base.line_desc || "Refinish",
          mod_lbr_ty: "LAR",
          mod_lb_hrs: isNaN(rHrs) ? 0 : rHrs,
          lbr_op: refinishInfo.LaborOperation || null,
          lbr_amt: isNaN(rAmt) ? 0 : rAmt
        });
      }
    }
  }

  return out;
};

/**
 * Extracts deletion IDs from the deletions object, also removing any derived labor/refinish lines
 * by including offsets (base + 400000, base + 500000).
 */
const extractDeletions = (deletions = {}) => {
  const items = Array.isArray(deletions.DamageLineInfo) ? deletions.DamageLineInfo : [deletions.DamageLineInfo || {}];
  const baseSeqs = items.map((line) => parseInt(line.UniqueSequenceNum, 10)).filter((id) => Number.isInteger(id));

  const allSeqs = [];
  for (const u of baseSeqs) {
    allSeqs.push(u, u + 400000, u + 500000);
  }
  // De-dup
  return Array.from(new Set(allSeqs));
};

/**
 * Handles VehicleDamageEstimateChgRq requests.
 * @param req
 * @param res
 * @returns {Promise<*>}
 */
const partsManagementVehicleDamageEstimateChgRq = async (req, res) => {
  const { logger } = req;

  try {
    const payload = await parseXml(req.body, logger);
    const rq = normalizeXmlObject(payload.VehicleDamageEstimateChgRq);
    if (!rq) return res.status(400).send("Missing <VehicleDamageEstimateChgRq>");

    const shopId = rq.ShopID;
    const claimNum = rq.ClaimInfo?.ClaimNum;

    if (!shopId || !claimNum) return res.status(400).send("Missing ShopID or ClaimNum");

    const job = await findJob(shopId, claimNum, logger);
    if (!job) return res.status(404).send("Job not found");

    const updatedJobData = extractUpdatedJobData(rq);
    const updatedLines = extractUpdatedJobLines(rq.AddsChgs, job.id);
    const deletedLineIds = extractDeletions(rq.Deletions);

    await client.request(UPDATE_JOB_BY_ID, { id: job.id, job: updatedJobData });

    // Build a set of unq_seq that will be updated (replaced). We delete them first to avoid duplicates.
    const updatedSeqs = Array.from(
      new Set((updatedLines || []).map((l) => l && l.unq_seq).filter((v) => Number.isInteger(v)))
    );

    if ((deletedLineIds && deletedLineIds.length) || (updatedSeqs && updatedSeqs.length)) {
      const allToDelete = Array.from(new Set([...(deletedLineIds || []), ...(updatedSeqs || [])]));
      if (allToDelete.length) {
        await client.request(DELETE_JOBLINES_BY_IDS, { jobid: job.id, unqSeqs: allToDelete });
      }
    }

    if (updatedLines.length > 0) {
      // Insert fresh versions after deletion so we don’t depend on a unique constraint
      await client.request(INSERT_JOBLINES, {
        joblines: updatedLines
      });
    }

    logger.log("parts-job-changed", "info", job.id, null);
    return res.status(200).json({ success: true, jobId: job.id });
  } catch (err) {
    logger.log("parts-chgrq-error", "error", null, null, { error: err });
    return res.status(err.status || 500).json({ error: err.message || "Internal error" });
  }
};

module.exports = partsManagementVehicleDamageEstimateChgRq;