import { ForbiddenException, HttpException, NotFoundException } from '@nestjs/common';
import { AdminRole } from '@prisma/client';

// @nestjs/jwt v12 ships ESM only, which this CommonJS jest setup cannot load.
// Same stub as master-otp.spec.ts — the service gets a hand-built double.
jest.mock('@nestjs/jwt', () => ({ JwtService: class {} }));

import { CustomerAuthService } from './customer-auth.service';

/**
 * Owner ruling 2026-10-12 — step 1 of the app login must say what went wrong.
 *
 * Until now an unknown number got `{ sent: true }` (opaque on purpose, to stop
 * customer enumeration) and a failed SMS send also got `{ sent: true }` (a dead
 * gateway is only a log line, D20). Both walked the person to the code box to
 * wait for a message that was never going to arrive, and nothing on screen told
 * the three real causes apart: the SMS is late, the gateway is down, or the
 * number was never registered.
 *
 * `requestOtp` had NO test coverage at all before this file, so the whole suite
 * stayed green through that change — these cases exist so it cannot again.
 */
describe('CustomerAuthService.requestOtp — the caller is told what happened', () => {
  const saved = { ...process.env };

  const CUSTOMER = { id: 'cus_1', mobile: '09121112233', isActive: true, isArchived: false };

  function build(opts: {
    customer?: unknown;
    expert?: unknown;
    smsResult?: { ok: boolean; error?: string };
  } = {}) {
    const prisma = {
      customer: {
        findFirst: jest.fn().mockResolvedValue('customer' in opts ? opts.customer : CUSTOMER),
        findUnique: jest.fn().mockResolvedValue(null),
      },
      customerOtp: {
        findFirst: jest.fn().mockResolvedValue(null),
        create: jest.fn().mockResolvedValue({}),
        count: jest.fn().mockResolvedValue(0),
      },
      smsMessage: { create: jest.fn().mockResolvedValue({}) },
      adminUser: { findFirst: jest.fn().mockResolvedValue(opts.expert ?? null) },
    };
    const sms = { send: jest.fn().mockResolvedValue(opts.smsResult ?? { ok: true }) };
    const service = new CustomerAuthService(
      prisma as never,
      { signAsync: jest.fn() } as never,
      sms as never,
      { enabled: false, attestOtpLogin: jest.fn(), browserBootstrapUrl: () => null } as never,
      { newTokenId: jest.fn().mockReturnValue(null), record: jest.fn() } as never,
    );
    jest.spyOn(service['logger'], 'warn').mockImplementation(() => undefined);
    jest.spyOn(service['logger'], 'error').mockImplementation(() => undefined);
    return { service, prisma, sms };
  }

  beforeEach(() => {
    process.env.NODE_ENV = 'test';
  });

  afterEach(() => {
    process.env = { ...saved };
  });

  it('sends the code for a registered, active customer', async () => {
    const { service, sms, prisma } = build();
    await expect(service.requestOtp('09121112233', '127.0.0.1')).resolves.toEqual({ sent: true });
    expect(sms.send).toHaveBeenCalledTimes(1);
    expect(prisma.customerOtp.create).toHaveBeenCalledTimes(1);
  });

  it('refuses an unregistered number with «ثبت نشده»، not a silent success', async () => {
    const { service, sms } = build({ customer: null });
    await expect(service.requestOtp('09129999999', '127.0.0.1')).rejects.toThrow(NotFoundException);
    await expect(service.requestOtp('09129999999', '127.0.0.1')).rejects.toThrow('ثبت نشده');
    // Nothing was sent and no challenge was stored for a number nobody holds.
    expect(sms.send).not.toHaveBeenCalled();
  });

  it('normalises Persian digits before deciding the number is unknown', async () => {
    // Guards against a false «ثبت نشده» for someone typing on a Persian keypad.
    const { service, prisma } = build();
    await service.requestOtp('۰۹۱۲۱۱۱۲۲۳۳', '127.0.0.1');
    expect(prisma.customer.findFirst).toHaveBeenCalledWith(
      expect.objectContaining({ where: expect.objectContaining({ mobile: '09121112233' }) }),
    );
  });

  it('reports a failed SMS send as 503 instead of claiming it was sent', async () => {
    const { service } = build({ smsResult: { ok: false, error: 'gateway refused' } });
    await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow(HttpException);
    await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow('ارسال پیام کوتاه');
  });

  it('still completes the login in development when there is no gateway at all', async () => {
    // The local-dev path: SmsService sends nothing, returns its own
    // `sms-not-configured`, and the code is logged instead — so this one failure
    // must NOT become an error or nobody could sign in locally.
    process.env.NODE_ENV = 'development';
    const { service } = build({ smsResult: { ok: false, error: 'sms-not-configured' } });
    await expect(service.requestOtp('09121112233', '127.0.0.1')).resolves.toEqual({ sent: true });
  });

  it('still fails in development when a configured gateway refuses', async () => {
    // D26's default `relay` driver counts as configured on any machine with an
    // external IPv4, so a dev box that cannot reach the relay gets a real
    // failure — which must be reported, not swallowed as "no gateway".
    process.env.NODE_ENV = 'development';
    const { service } = build({ smsResult: { ok: false, error: 'relay unreachable' } });
    await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow('ارسال پیام کوتاه');
  });

  it('refuses in production even when nothing is configured', async () => {
    // The dev fallback must never let a production deployment report success
    // while silently sending nothing.
    process.env.NODE_ENV = 'production';
    const { service } = build({ smsResult: { ok: false, error: 'sms-not-configured' } });
    await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow('ارسال پیام کوتاه');
  });

  /**
   * A sales expert signs in through this same flow (D21). Three states return
   * no trading account for an expert who DOES exist, and «ثبت نشده است» would
   * be a lie in each — it would send support hunting a registration problem.
   */
  describe('a sales expert whose trading account cannot be used', () => {
    it('says the account is disabled, not that the number is unknown', async () => {
      const { service } = build({
        customer: null,
        expert: {
          id: 'adm_1',
          mobile: '09121112233',
          role: AdminRole.SALES_EXPERT,
          fullName: 'کارشناس',
          firstName: 'کار',
          lastName: 'شناس',
          wagePercent: '0',
          salesExpertProfile: { id: 'sep_1', gramLevel: '0', nationalCode: null, tradingCustomerId: 'cus_dead' },
        },
      });
      // findUnique returns null → the linked customer is gone or unusable.
      await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow(ForbiddenException);
      await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow('غیرفعال');
    });

    it('says the account is incomplete when the expert has no profile', async () => {
      const { service } = build({
        customer: null,
        expert: {
          id: 'adm_2',
          mobile: '09121112233',
          role: AdminRole.SALES_EXPERT,
          fullName: 'کارشناس',
          firstName: 'کار',
          lastName: 'شناس',
          wagePercent: '0',
          salesExpertProfile: null,
        },
      });
      await expect(service.requestOtp('09121112233', '127.0.0.1')).rejects.toThrow('کامل نیست');
    });
  });
});