import { parse } from "csv-parse";
import fs from "fs";
import { PrismaClient } from "@prisma/client";

const prisma = new PrismaClient({
  datasourceUrl: process.env.TEST_DATABASE_URL || process.env.DATABASE_URL,
});

type CsvRow = {
  customerType: string;
  status: string;
  statusOrder: string;
  branchCode: string;
  branchTaxNo: string;
  branchName: string;
  branchNameEN: string;
  code: string;
  legalPersonNo: string;
  registerName: string;
  registerNameEN: string;
  registerDate: string;
  authorizedCapital: string;
  authorizedName: string;
  authorizedNameEN: string;
  email: string;
  telephoneNo: string;
  employmentOffice: string;
  employmentOfficeEN: string;
  officeTel: string;
  jobPosition: string;
  jobDescription: string;
  payDate: string;
  payDateEN: string;
  wageRate: string;
  wageRateText: string;
  namePrefix: string;
  firstName: string;
  firstNameEN: string;
  lastName: string;
  lastNameEN: string;
  contactName: string;
  contactTel: string;
  gender: string;
  birthDate: string;
  address: string;
  addressEN: string;
  moo: string;
  mooEN: string;
  soi: string;
  soiEN: string;
  street: string;
  streetEN: string;
  subDistrict: string;
  district: string;
  province: string;
  zipcode: string;
  homeCode: string;
  lineId: string;
};

async function importCsv(filePath: string) {
  const parser = fs.createReadStream(filePath).pipe(parse({ columns: true, trim: true }));

  const rows: CsvRow[] = [];
  for await (const row of parser) {
    rows.push(row as CsvRow);
  }

  // ✅ 1. ดึง subDistrict ล่วงหน้า
  const subDistricts = [...new Set(rows.map((r) => r.subDistrict).filter(Boolean))];

  const searchAddr = await prisma.subDistrict.findMany({
    where: {
      name: { in: subDistricts },
    },
    include: {
      district: {
        include: {
          province: true,
        },
      },
    },
  });

  const sdtDtPv = new Map<
    string,
    { subDistrictId: string; districtId: string; provinceId: string }
  >();

  for (const s of searchAddr) {
    if (!s.zipCode) continue;
    sdtDtPv.set(s.zipCode, {
      subDistrictId: s.id,
      districtId: s.districtId,
      provinceId: s.district.provinceId,
    });
  }

  // ✅ cache branch ที่สร้างแล้วเพื่อลด query
  const branchCache = new Map<string, string>();

  for (const row of rows) {
    // หา province/district/subdistrict จาก zipcode
    const addr = sdtDtPv.get(row.zipcode);

    let branchId = branchCache.get(row.branchCode);

    if (!branchId) {
      let registeredBranch = await prisma.branch.findFirst({
        where: {
          code: row.branchCode,
          name: row.branchName,
        },
      });

      if (!registeredBranch) {
        registeredBranch = await prisma.branch.create({
          data: {
            code: row.branchCode,
            taxNo: row.branchTaxNo || "-",
            name: row.branchName,
            nameEN: row.branchNameEN || row.branchName,
            telephoneNo: row.telephoneNo || "-",
            permitNo: "-",
            address: row.address || "-",
            addressEN: row.addressEN || row.address || "-",
            email: row.email || "-",
            latitude: "0",
            longitude: "0",
            headOfficeId: "DEFAULT_HEAD_OFFICE_ID",
            status: "CREATED",
            statusOrder: 0,
          },
        });
      }

      branchId = registeredBranch.id;
      branchCache.set(row.branchCode, branchId);
    }

    // ✅ Create customer
    const customer = await prisma.customer.create({
      data: {
        customerType: row.customerType as any,
        status: row.status as any,
        statusOrder: Number(row.statusOrder) || 0,
        registeredBranch: {
          connect: { id: branchId },
        },
      },
    });

    // ✅ Create CustomerBranch
    await prisma.customerBranch.create({
      data: {
        customerId: customer.id,

        code: row.code || "-",
        codeCustomer: row.legalPersonNo || "-",

        telephoneNo: row.telephoneNo || "-",

        namePrefix: row.namePrefix || null,
        firstName: row.firstName || null,
        firstNameEN: row.firstNameEN || null,
        lastName: row.lastName || null,
        lastNameEN: row.lastNameEN || null,
        gender: row.gender || null,
        birthDate: row.birthDate ? new Date(row.birthDate) : null,
        citizenId: row.legalPersonNo || null,

        legalPersonNo: row.legalPersonNo || null,
        registerName: row.registerName || null,
        registerNameEN: row.registerNameEN || null,
        registerDate: row.registerDate ? new Date(row.registerDate) : null,
        authorizedCapital: row.authorizedCapital || null,
        authorizedName: row.authorizedName || null,
        authorizedNameEN: row.authorizedNameEN || null,

        homeCode: row.homeCode || "-",
        employmentOffice: row.employmentOffice || "-",
        employmentOfficeEN: row.employmentOfficeEN || "-",

        // Address
        address: row.address || "-",
        addressEN: row.addressEN || "-",
        soi: row.soi || null,
        soiEN: row.soiEN || null,
        moo: row.moo || null,
        mooEN: row.mooEN || null,
        street: row.street || null,
        streetEN: row.streetEN || null,
        provinceId: addr?.provinceId,
        districtId: addr?.districtId,
        subDistrictId: addr?.subDistrictId,

        // Contact
        email: row.email || "-",
        contactTel: row.contactTel || "-",
        officeTel: row.officeTel || "-",
        contactName: row.contactName || "-",

        jobPosition: row.jobPosition || "-",
        jobDescription: row.jobDescription || "-",
        payDate: row.payDate || "-",
        payDateEN: row.payDateEN || "-",
        wageRate: parseInt(row.wageRate || "0", 10),
        wageRateText: row.wageRateText || "-",
      },
    });

    console.log(`✅ Inserted customer ${customer.id} with branch ${branchId}`);
  }
}

importCsv("/home/hamu/Documents/JWS import.csv").then(() => {
  console.log("Import finished ✅");
});