// server/rr/rr-service-vehicles.js
const { RRClient } = require("./lib/index.cjs");
const { getRRConfigFromBodyshop } = require("./rr-config");
const RRLogger = require("./rr-logger");
const { ownersFromVinBlocks, getTransactionType, defaultRRTTL, RRCacheEnums } = require("../rr/rr-utils");

function buildClientAndOpts(bodyshop) {
  const cfg = getRRConfigFromBodyshop(bodyshop);
  const client = new RRClient({
    baseUrl: cfg.baseUrl,
    username: cfg.username,
    password: cfg.password,
    timeoutMs: cfg.timeoutMs,
    retries: cfg.retries
  });
  const opts = {
    routing: cfg.routing,
    envelope: {
      sender: {
        component: "Rome",
        task: "SV", // default for insertServiceVehicle
        referenceId: "Insert",
        creator: "RCI",
        senderName: "RCI"
      }
    }
  };
  return { client, opts };
}

function buildServiceVehiclePayload({ job, custNo, overrides = {} }) {
  // Helpers
  const isBlank = (v) => v == null || (typeof v === "string" && v.trim() === "");
  const toStr = (v) => (v == null ? undefined : String(v));
  const toNum = (v) => {
    const n = Number(v);
    return Number.isFinite(n) ? n : undefined;
  };
  const dropEmptyDeep = (obj) => {
    if (Array.isArray(obj)) {
      const arr = obj
        .map(dropEmptyDeep)
        .filter(
          (v) =>
            !(
              v == null ||
              (typeof v === "object" && !Array.isArray(v) && Object.keys(v).length === 0) ||
              (typeof v === "string" && v.trim() === "")
            )
        );
      return arr.length ? arr : undefined;
    }
    if (obj && typeof obj === "object") {
      const out = {};
      for (const [k, v] of Object.entries(obj)) {
        const vv = dropEmptyDeep(v);
        if (!(vv == null || (typeof vv === "string" && vv.trim() === ""))) out[k] = vv;
      }
      return Object.keys(out).length ? out : undefined;
    }
    return obj;
  };

  // Derive odometer + units from job
  let odometer = undefined;
  let odometerUnits = undefined;

  if (!isBlank(job?.kmout)) {
    odometer = toNum(job.kmout);
    odometerUnits = "KM";
  } else if (!isBlank(job?.kmin)) {
    odometer = toNum(job.kmin);
    odometerUnits = "KM";
  } else if (!isBlank(job?.odometer)) {
    odometer = toNum(job.odometer);
    // if you know this is miles in your dataset, set "MI"; otherwise omit units
  }

  // Map common vehicle descriptors
  const year = overrides.year ?? job?.v_model_yr;
  const modelDesc = overrides.modelDesc ?? job?.v_model_desc;
  const makeDesc = overrides.makeDesc ?? job?.v_make_desc; // not in the spec list, used only to help build `carline`
  const extClrDesc = overrides.extClrDesc ?? job?.v_color;
  const intClrDesc = overrides.intClrDesc ?? job?.v_int_color;
  const trimDesc = overrides.trimDesc ?? job?.v_trim;
  const bodyStyle = overrides.bodyStyle ?? job?.v_body_style;
  const engineDesc = overrides.engineDesc ?? job?.v_engine_desc ?? job?.engine_desc;
  const transDesc = overrides.transDesc ?? job?.v_trans_desc ?? job?.trans_desc;

  // Carline: prefer explicit field; otherwise derive from make+model when both are present
  const carline =
    overrides.carline ??
    job?.v_carline ??
    (makeDesc && modelDesc ? `${String(makeDesc).trim()} ${String(modelDesc).trim()}` : undefined);

  // Advisor (NameRecId) if you have it handy (often provided via txEnvelope or cache) – pass in overrides.advisorNameRecId
  const advisorNameRecId = overrides.advisorNameRecId;

  // Optional warranty fields (pass through via overrides.*)
  const vehExtWarranty = (() => {
    const contractNumber = overrides?.vehExtWarranty?.contractNumber ?? job?.warranty_contract_no;
    const expirationDate = overrides?.vehExtWarranty?.expirationDate ?? job?.warranty_exp_date;
    const expirationMileage = overrides?.vehExtWarranty?.expirationMileage ?? job?.warranty_exp_mileage;
    const candidate = {
      contractNumber: isBlank(contractNumber) ? undefined : String(contractNumber),
      expirationDate: isBlank(expirationDate) ? undefined : String(expirationDate),
      expirationMileage: isBlank(expirationMileage) ? undefined : String(expirationMileage)
    };
    const any = Object.values(candidate).some((v) => !isBlank(v));
    return any ? candidate : undefined;
  })();

  // Sales/team/in-service/mileage optional fields
  const salesmanNo = overrides.salesmanNo ?? job?.salesman_no;
  const inServiceDate = overrides.inServiceDate ?? job?.in_service_date;
  const svMileage = overrides.mileage ?? odometer; // mirror root odometer if you want
  const teamCode = overrides.teamCode ?? job?.team_code;

  // Build raw payload (include everything we can; drop empties after)
  const raw = {
    // Required
    vin: toStr(overrides.vin ?? job?.v_vin),

    // Optional attributes
    modelDesc: toStr(modelDesc),
    carline: toStr(carline),
    extClrDesc: toStr(extClrDesc),
    intClrDesc: toStr(intClrDesc),
    trimDesc: toStr(trimDesc),
    bodyStyle: toStr(bodyStyle),
    engineDesc: toStr(engineDesc),
    transDesc: toStr(transDesc),

    // Optional elements
    year: toStr(year),
    odometer,
    odometerUnits: toStr(overrides.odometerUnits ?? odometerUnits),

    // VehicleDetail
    vehicleDetail: {
      licNo: toStr(overrides.licNo ?? job?.plate_no)
    },

    // VehicleServInfo (CustomerNo is required)
    vehicleServInfo: {
      customerNo: toStr(custNo),
      salesmanNo: toStr(salesmanNo),
      inServiceDate: toStr(inServiceDate),
      mileage: svMileage,
      teamCode: toStr(teamCode),
      vehExtWarranty,
      advisor: advisorNameRecId ? { contactInfo: { nameRecId: toStr(advisorNameRecId) } } : undefined
    }
  };

  const cleaned = dropEmptyDeep(raw);
  if (!cleaned?.vin) throw new Error("buildServiceVehiclePayload: VIN is required");
  if (!cleaned?.vehicleServInfo?.customerNo) throw new Error("buildServiceVehiclePayload: customerNo is required");

  return cleaned;
}

/**
 * Ensure a Service Vehicle (for job.v_vin) exists and is associated to the given custNo.
 * - Prefer cached VIN blocks saved during step {2} under RR.VINCandidates
 * - If no cache, do a single combinedSearch by VIN, then cache it
 * - If not owned, insert service vehicle to associate to selected customer
 */
async function ensureRRServiceVehicle({ bodyshop, custNo, job, overrides = {}, socket, redisHelpers }) {
  const log = RRLogger(socket);
  const vin = job?.v_vin && String(job.v_vin).trim();
  if (!vin) {
    log("warn", "ensureRRServiceVehicle: no VIN on job; nothing to ensure", { jobId: job?.id });
    return { ensured: false, reason: "no-vin" };
  }
  const custNoStr = String(custNo);

  const { client, opts } = buildClientAndOpts(bodyshop);

  // 1) Try cached VIN combined-search blocks from step {2}
  let blocks = null;
  if (redisHelpers && socket?.id && job?.id) {
    try {
      blocks = await redisHelpers.getSessionTransactionData(
        socket.id,
        getTransactionType(job.id),
        RRCacheEnums.VINCandidates
      );
    } catch {
      // ignore
    }
  }

  // 2) If no cached blocks, do one combinedSearch (VIN) and cache it
  if (!Array.isArray(blocks) || blocks.length === 0) {
    try {
      const precheckRes = await client.combinedSearch(
        { vin, maxRecs: 50, kind: "vin" },
        {
          ...opts,
          envelope: {
            ...opts.envelope,
            sender: { ...opts.envelope.sender, task: "CVC", referenceId: "Query" }
          }
        }
      );

      // Normalize to "blocks" shape (either .data or array)
      blocks = Array.isArray(precheckRes?.data) ? precheckRes.data : Array.isArray(precheckRes) ? precheckRes : [];

      if (redisHelpers && socket?.id && job?.id) {
        try {
          await redisHelpers.setSessionTransactionData(
            socket.id,
            getTransactionType(job.id),
            RRCacheEnums.VINCandidates,
            blocks,
            defaultRRTTL
          );
        } catch {
          //
        }
      }
    } catch (e) {
      // Non-fatal: proceed to insert
      log("warn", "RR combinedSearch(VIN) precheck failed; will proceed to insert", { vin, err: e?.message });
      blocks = [];
    }
  }

  // 3) Check ownership from blocks (strict)
  const ownersSet = ownersFromVinBlocks(blocks, vin);
  if (ownersSet.has(custNoStr)) {
    log("info", "ensureRRServiceVehicle: already owned", { vin, custNo: custNoStr });
    return { ensured: true, alreadyOwned: true };
  }

  // 4) Not owned → insert/associate service vehicle to selected customer
  const payload = buildServiceVehiclePayload({ job, custNo: custNoStr, overrides });
  const res = await client.insertServiceVehicle(payload, opts);
  const data = res?.data ?? res;

  // Normalize a simple id for later (RR often returns a DMS key)
  const svId = data?.svId ?? data?.serviceVehicleId ?? data?.dmsRecKey ?? data?.DMSRecKey;
  if (!svId) {
    log("warn", "RR insert service vehicle returned no id", { vin, custNo: custNoStr, data });
  } else {
    log("info", "ensureRRServiceVehicle: inserted service vehicle", { vin, custNo: custNoStr, svId });
  }
  return { ensured: true, inserted: true, svId, raw: data };
}

module.exports = { ensureRRServiceVehicle, buildServiceVehiclePayload, buildClientAndOpts };