import { err, ok, type CommandContext } from "@tailor-platform/erp-kit/core";
import {
  createActive,
  type CustomerAddressUsagePurpose,
  type CustomerBankAccountUsagePurpose,
} from "../domain/customerAccount";
import type { Transaction } from "../generated/kysely-tailordb";
import {
  AddressInactiveError,
  AddressNotOwnedByPartnerError,
  BankAccountInactiveError,
  BankAccountNotOwnedByPartnerError,
  CompanyNotFoundError,
  CurrencyNotFoundError,
  DuplicateAccountError,
  PartnerNotActiveError,
  PartnerNotFoundError,
} from "../lib/errors.generated";
import type { OrganizationQueries, PrimitivesQueries } from "../module";
import {
  createBusinessPartnerRepository,
  type BusinessPartnerRepository,
} from "../repository/businessPartnerRepository";
import {
  createCustomerAccountRepository,
  type CustomerAccountRepository,
} from "../repository/customerAccountRepository";

export interface CustomerAddressUsageInput {
  addressId: string;
  purpose: CustomerAddressUsagePurpose;
  isDefault?: boolean;
}

export interface CustomerBankAccountUsageInput {
  bankAccountId: string;
  purpose: CustomerBankAccountUsagePurpose;
  isDefault?: boolean;
}

export interface CreateCustomerAccountInput {
  partnerId: string;
  companyId: string;
  code: string;
  name: string;
  preferredCurrencyId?: string;
  addressUsages?: CustomerAddressUsageInput[];
  bankAccountUsages?: CustomerBankAccountUsageInput[];
}

export async function run<
  CF extends Record<string, unknown>,
  AUF extends Record<string, unknown>,
  BUF extends Record<string, unknown>,
>(
  db: Transaction,
  input: Omit<CreateCustomerAccountInput, "addressUsages" | "bankAccountUsages"> &
    CF & {
      addressUsages?: (CustomerAddressUsageInput & AUF)[];
      bankAccountUsages?: (CustomerBankAccountUsageInput & BUF)[];
    },
  ctx: CommandContext,
  organizationQueries: Pick<OrganizationQueries, "getCompany">,
  primitivesQueries: Pick<PrimitivesQueries, "getCurrency">,
  repositoryFactory: (
    db: Transaction,
  ) => CustomerAccountRepository = createCustomerAccountRepository,
  businessPartnerRepositoryFactory: (
    db: Transaction,
  ) => BusinessPartnerRepository = createBusinessPartnerRepository,
) {
  const {
    partnerId,
    companyId,
    code,
    name,
    preferredCurrencyId,
    addressUsages = [],
    bankAccountUsages = [],
    ...customFields
  } = input;

  const businessPartnerRepository = businessPartnerRepositoryFactory(db);
  const partner = await businessPartnerRepository.findById(partnerId, { forUpdate: true });
  if (!partner) return err(new PartnerNotFoundError(partnerId));
  if (partner.header.status !== "ACTIVE") return err(new PartnerNotActiveError(partnerId));

  const { company } = (await organizationQueries.getCompany(db, { id: companyId }, ctx)).value;
  if (!company) return err(new CompanyNotFoundError(companyId));
  if (preferredCurrencyId) {
    const { currency } = (await primitivesQueries.getCurrency(db, { id: preferredCurrencyId }, ctx))
      .value;
    if (!currency) return err(new CurrencyNotFoundError(preferredCurrencyId));
  }

  const repository = repositoryFactory(db);
  if (await repository.findByCompanyAndCode(companyId, code, { forUpdate: true })) {
    return err(new DuplicateAccountError(`${companyId}:${code}`));
  }

  const addressById = new Map(partner.addresses.map((address) => [address.id, address]));
  for (const usage of addressUsages) {
    const address = addressById.get(usage.addressId);
    if (!address) return err(new AddressNotOwnedByPartnerError(usage.addressId));
    if (!address.active) return err(new AddressInactiveError(usage.addressId));
  }

  const bankAccountById = new Map(partner.bankAccounts.map((account) => [account.id, account]));
  for (const usage of bankAccountUsages) {
    const bankAccount = bankAccountById.get(usage.bankAccountId);
    if (!bankAccount) return err(new BankAccountNotOwnedByPartnerError(usage.bankAccountId));
    if (!bankAccount.active) return err(new BankAccountInactiveError(usage.bankAccountId));
  }

  const created = createActive({
    partnerId,
    companyId,
    code,
    name,
    preferredCurrencyId,
    customFields,
    addressUsages: addressUsages.map(({ addressId, purpose, isDefault = false, ...fields }) => ({
      addressId,
      purpose,
      isDefault,
      customFields: fields,
    })),
    bankAccountUsages: bankAccountUsages.map(
      ({ bankAccountId, purpose, isDefault = false, ...fields }) => ({
        bankAccountId,
        purpose,
        isDefault,
        customFields: fields,
      }),
    ),
  });
  if (!created.ok) return created;
  await repository.save(created.value);
  return ok({ customerAccountId: created.value.id });
}