import type Vorpal from "vorpal";
import { DataSource } from "typeorm";
import type { CommandContext } from "./types";
import { Company, CompanyType, CompanyKind, CompanyStatus, CompanyNationality } from "../../modules/companies/entities/company.entity";
import { CompanyProfile, ProfileStatus, ProfileType } from "../../modules/companies/entities/company-profile.entity";
import { ExternalProfile } from "../../modules/companies/entities/external-profile.entity";
import { Yard } from "../../modules/rule-engine/entities/yard.entity";
import { ServiceType } from "../../modules/rule-engine/entities/service-type.entity";
import { CargoType } from "../../modules/rule-engine/entities/cargo-type.entity";
import { Rate } from "../../modules/rule-engine/entities/rate.entity";
import { Contract } from "../../modules/contracts/entities/contract.entity";
import { ContractRoute } from "../../modules/contracts/entities/contract-route.entity";
import { ContractCargoScope } from "../../modules/contracts/entities/contract-cargo-scope.entity";
import { ContractRateSnapshot } from "../../modules/contracts/entities/contract-rate-snapshot.entity";

const COMPANY_IDS = [
  "a0000001-0000-4000-8000-000000000001",
  "a0000001-0000-4000-8000-000000000002",
  "a0000001-0000-4000-8000-000000000003",
  "a0000001-0000-4000-8000-000000000004",
];

const PROFILE_IDS = [
  "b0000001-0000-4000-8000-000000000001",
  "b0000001-0000-4000-8000-000000000002",
  "b0000001-0000-4000-8000-000000000003",
  "b0000001-0000-4000-8000-000000000004",
  "b0000001-0000-4000-8000-000000000005",
  "b0000001-0000-4000-8000-000000000006",
  "b0000001-0000-4000-8000-000000000007",
  "b0000001-0000-4000-8000-000000000008",
];

const EXTERNAL_PROFILE_IDS = [
  "c0000001-0000-4000-8000-000000000001",
  "c0000001-0000-4000-8000-000000000002",
  "c0000001-0000-4000-8000-000000000003",
  "c0000001-0000-4000-8000-000000000004",
];

function generateRef(index: number): string {
  return `TST-CTR-${String(index).padStart(5, "0")}`;
}

export function registerSeedTestContracts(
  vorpal: Vorpal,
  ctx: CommandContext,
): void {
  vorpal
    .command("seed:test-contracts", "Generate test contracts with companies and all deps")
    .option("-n, --count <n>", "Number of contracts to create (default: 4)")
    .option("--status <statuses>", "Comma-separated contract statuses (default: DRAFT,SUBMITTED,APPROVED,CONTRACT_ACTIVE)")
    .option("--freight <types>", "Freight types: CONTAINER,BULK (default: both)")
    .option("--direction <dirs>", "Trade directions: IMPORT,EXPORT (default: both)")
    .option("--company <name>", "Only create contracts for company matching name/TIN")
    .action(async function (this: any, args: any) {
      const { app } = ctx;
      const ds = app.get(DataSource);

      const count = Math.max(1, Math.min(20, parseInt(args.options?.count ?? "4", 10)));
      const statusList = (args.options?.status ?? "DRAFT,SUBMITTED,APPROVED,CONTRACT_ACTIVE")
        .split(",").map((s: string) => s.trim()).filter(Boolean);
      const freightList = (args.options?.freight ?? "CONTAINER,BULK")
        .split(",").map((s: string) => s.toUpperCase().trim())
        .filter((s: string) => s === "CONTAINER" || s === "BULK");
      const directionList = (args.options?.direction ?? "IMPORT,EXPORT")
        .split(",").map((s: string) => s.toUpperCase().trim())
        .filter((s: string) => s === "IMPORT" || s === "EXPORT");
      const companyFilter = args.options?.company as string | undefined;

      if (freightList.length === 0 || directionList.length === 0) {
        this.log("error: at least one freight type and trade direction required");
        return;
      }

      this.log(`Seeding ${count} contracts (statuses=${statusList.join(",")}, freight=${freightList.join(",")}, dir=${directionList.join(",")})...`);

      const yards = await ds.getRepository(Yard).find({ where: { isActive: true } });
      const yardByCode = new Map(yards.map((y) => [y.code, y]));
      const djibouti = yardByCode.get("DJIBOUTI");
      const addis = yardByCode.get("ADDIS_ABABA");
      if (!djibouti || !addis) {
        this.log("error: need at least DJIBOUTI and ADDIS_ABABA yards seeded");
        return;
      }

      const serviceTypes = await ds
        .getRepository(ServiceType)
        .find({ where: { isActive: true } });
      const stByCode = new Map(serviceTypes.map((st) => [st.code, st]));
      const railContainer = stByCode.get("RAIL_CONTAINER");
      const railBulk = stByCode.get("RAIL_BULK");
      if (!railContainer && !railBulk) {
        this.log("error: need at least RAIL_CONTAINER or RAIL_BULK service type seeded");
        return;
      }

      const cargoTypes = await ds
        .getRepository(CargoType)
        .find({ where: { isActive: true } });
      const cargoByCode = new Map(cargoTypes.map((c) => [c.code, c]));
      const grain = cargoByCode.get("GRAIN");
      const sugar = cargoByCode.get("SUGAR");
      const fertilizer = cargoByCode.get("FERTILIZER");

      const rates = await ds.getRepository(Rate).find({ where: { status: "LIVE" } });

      const companyRepo = ds.getRepository(Company);
      let companies = await companyRepo.find({});

      if (companyFilter) {
        companies = companies.filter(
          (c) =>
            c.name.toLowerCase().includes(companyFilter.toLowerCase()) ||
            c.tin.includes(companyFilter),
        );
      }

      if (companies.length === 0) {
        this.log("No existing companies found — seeding test companies...");
        companies = await seedTestCompanies(ds, (msg) => this.log(msg));
      } else {
        this.log(`Using ${companies.length} existing companies from DB`);
      }

      const contractRepo = ds.getRepository(Contract);
      let contractCount = 0;

      for (let i = 0; i < count; i++) {
        const statusIdx = i % statusList.length;
        const ftIdx = i % freightList.length;
        const dirIdx = i % directionList.length;
        const companyIdx = i % companies.length;

        const status = statusList[statusIdx];
        const freightType = freightList[ftIdx];
        const direction = directionList[dirIdx];
        const company = companies[companyIdx];

        const profile = await ds.getRepository(CompanyProfile).findOne({
          where: {
            companyId: company.id,
            type: direction === "IMPORT" ? ProfileType.importer : ProfileType.exporter,
          },
        });
        if (!profile) continue;

        const ref = generateRef(i + 1);
        const exists = await contractRepo.findOne({ where: { reference: ref } });
        if (exists) {
          this.log(`  Contract ${ref} already exists — skipping`);
          contractCount++;
          continue;
        }

        const serviceTypeId =
          freightType === "BULK" && railBulk
            ? railBulk.id
            : railContainer
              ? railContainer.id
              : serviceTypes[0].id;

        const originId = direction === "IMPORT" ? djibouti.id : addis.id;
        const destId = direction === "IMPORT" ? addis.id : djibouti.id;

        const contract = contractRepo.create({
          reference: ref,
          companyId: company.id,
          companyProfileId: profile.id,
          contractKind: "ONE_TIME" as const,
          tradeDirection: direction,
          freightType,
          serviceTypeId,
          paymentCurrency: "USD",
          customsClearingEnabled: false,
          equipmentReturn: "without_return",
          status,
          versionNumber: 1,
        });

        const saved = await contractRepo.save(contract);

        await ds.getRepository(ContractRoute).save(
          ds.getRepository(ContractRoute).create({
            contractId: saved.id,
            originYardId: originId,
            destinationYardId: destId,
            sortOrder: 1,
          }),
        );

        if (freightType === "CONTAINER") {
          for (const size of ["20FT", "40FT"] as const) {
            await ds.getRepository(ContractCargoScope).save(
              ds.getRepository(ContractCargoScope).create({
                contractId: saved.id,
                containerSize: size,
              }),
            );
          }
        } else {
          const bulkCargo = grain || sugar || fertilizer;
          if (bulkCargo) {
            await ds.getRepository(ContractCargoScope).save(
              ds.getRepository(ContractCargoScope).create({
                contractId: saved.id,
                cargoTypeId: bulkCargo.id,
                quantityCap: 10000,
              }),
            );
          }
        }

        const matchingRates = rates.filter((r) => {
          if (r.appliesTo === "CONTAINER" && freightType !== "CONTAINER") return false;
          if (r.appliesTo === "BULK" && freightType !== "BULK") return false;
          if (r.tradeDirection && r.tradeDirection !== direction) return false;
          return r.status === "LIVE" && r.trigger === "ALWAYS";
        });

        const seen = new Set<string>();
        for (const rate of matchingRates.slice(0, 3)) {
          const sig = `${rate.rateType}|${rate.currency}|${rate.rateValue}`;
          if (seen.has(sig)) continue;
          seen.add(sig);

          await ds.getRepository(ContractRateSnapshot).save(
            ds.getRepository(ContractRateSnapshot).create({
              contractId: saved.id,
              rateId: rate.id,
              rateCode: rate.rateType,
              unitPrice: Number(rate.rateValue),
              unitOfMeasure: rate.rateUnit,
              currency: rate.currency ?? "USD",
              containerSize: freightType === "CONTAINER" ? "20FT" : null,
              isSurcharge: rate.trigger !== "ALWAYS",
              conditionalOn: rate.trigger !== "ALWAYS" ? rate.trigger : null,
            }),
          );
        }

        contractCount++;
        this.log(`  Created ${status} ${freightType} ${direction} contract: ${ref} (${company.name})`);
      }

      this.log(`Done — ${contractCount} contracts ensured`);
    });
}

interface CompanySeed {
  id: string;
  name: string;
  tin: string;
  profiles: Array<{ id: string; type: ProfileType; reference: string }>;
  externalProfile: { id: string; userId: string; firstName: string; lastName: string };
}

const TEST_COMPANIES: CompanySeed[] = [
  {
    id: COMPANY_IDS[0], name: "Test Importer Co.", tin: "TST000001",
    profiles: [
      { id: PROFILE_IDS[0], type: ProfileType.importer, reference: "TST-IM-001" },
      { id: PROFILE_IDS[1], type: ProfileType.exporter, reference: "TST-EX-001" },
    ],
    externalProfile: { id: EXTERNAL_PROFILE_IDS[0], userId: "00000000-0000-0000-0000-000000000001", firstName: "Abebe", lastName: "Kebede" },
  },
  {
    id: COMPANY_IDS[1], name: "Test Exporter Ltd.", tin: "TST000002",
    profiles: [
      { id: PROFILE_IDS[2], type: ProfileType.importer, reference: "TST-IM-002" },
      { id: PROFILE_IDS[3], type: ProfileType.exporter, reference: "TST-EX-002" },
    ],
    externalProfile: { id: EXTERNAL_PROFILE_IDS[1], userId: "00000000-0000-0000-0000-000000000002", firstName: "Bekele", lastName: "Alemu" },
  },
  {
    id: COMPANY_IDS[2], name: "Bulk Commodities PLC", tin: "TST000003",
    profiles: [
      { id: PROFILE_IDS[4], type: ProfileType.importer, reference: "TST-IM-003" },
      { id: PROFILE_IDS[5], type: ProfileType.exporter, reference: "TST-EX-003" },
    ],
    externalProfile: { id: EXTERNAL_PROFILE_IDS[2], userId: "00000000-0000-0000-0000-000000000003", firstName: "Chala", lastName: "Tesfaye" },
  },
  {
    id: COMPANY_IDS[3], name: "Hazardous Logistics Inc.", tin: "TST000004",
    profiles: [
      { id: PROFILE_IDS[6], type: ProfileType.importer, reference: "TST-IM-004" },
      { id: PROFILE_IDS[7], type: ProfileType.exporter, reference: "TST-EX-004" },
    ],
    externalProfile: { id: EXTERNAL_PROFILE_IDS[3], userId: "00000000-0000-0000-0000-000000000004", firstName: "Desta", lastName: "Hailu" },
  },
];

async function seedTestCompanies(ds: DataSource, log: (msg: string) => void): Promise<Company[]> {
  const companyRepo = ds.getRepository(Company);
  const profileRepo = ds.getRepository(CompanyProfile);
  const extProfileRepo = ds.getRepository(ExternalProfile);
  const result: Company[] = [];

  for (const seed of TEST_COMPANIES) {
    let company = await companyRepo.findOne({ where: { id: seed.id } });
    if (!company) {
      company = await companyRepo.save(
        companyRepo.create({
          id: seed.id,
          name: seed.name,
          type: CompanyType.Customer,
          kind: CompanyKind.Commercial,
          status: CompanyStatus.Active,
          tin: seed.tin,
          country: "Ethiopia",
          nationality: CompanyNationality.Ethiopian,
          email: `info@${seed.name.toLowerCase().replace(/\s+/g, "")}.com`,
          phone: "+251911000001",
        }),
      );
      log(`  Created company: ${seed.name}`);
    } else {
      log(`  Company already exists: ${seed.name}`);
    }

    for (const p of seed.profiles) {
      const existing = await profileRepo.findOne({ where: { id: p.id } });
      if (!existing) {
        await profileRepo.save(
          profileRepo.create({
            id: p.id,
            companyId: seed.id,
            type: p.type,
            reference: p.reference,
            status: ProfileStatus.Active,
          }),
        );
        log(`    Created ${p.type} profile: ${p.reference}`);
      }
    }

    const ext = seed.externalProfile;
    const existingExt = await extProfileRepo.findOne({ where: { id: ext.id } });
    if (!existingExt) {
      await extProfileRepo.save(
        extProfileRepo.create({
          id: ext.id,
          userId: ext.userId,
          companyId: seed.id,
          firstName: ext.firstName,
          lastName: ext.lastName,
          isPrimaryContact: true,
          onboardingCompleted: true,
        }),
      );
      log(`    Created external profile: ${ext.firstName} ${ext.lastName}`);
    }

    result.push(company);
  }

  return result;
}