import { INestApplication } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import { Test } from '@nestjs/testing';
import * as request from 'supertest';
import { AppModule } from '../src/app.module';
import { configureApp } from '../src/app.setup';
import { PrismaService } from '../src/prisma/prisma.service';
import { GcsStorageDriver } from '../src/modules/storage/gcs-storage.driver';
import { STORAGE_DRIVER } from '../src/modules/storage/storage.constants';

describe('App (e2e)', () => {
  let app: INestApplication;
  let jwtService: JwtService;
  let prisma: PrismaService;
  const upload = jest.fn();

  async function signToken() {
    return jwtService.signAsync({
      sub: 1,
      email: 'stylist@example.com',
      username: 'Ogawa',
    });
  }

  beforeAll(async () => {
    upload.mockReset();
    upload.mockResolvedValue(undefined);

    const moduleRef = await Test.createTestingModule({
      imports: [AppModule],
    })
      .overrideProvider(STORAGE_DRIVER)
      .useValue({ upload })
      .overrideProvider(GcsStorageDriver)
      .useValue({ upload })
      .compile();

    app = moduleRef.createNestApplication();
    configureApp(app);
    await app.init();
    jwtService = app.get(JwtService);
    prisma = app.get(PrismaService);
  });

  afterAll(async () => {
    await prisma.aiHairSimulation.deleteMany({
      where: {
        simulateRemark: {
          startsWith: 'app-e2e-customer-summary-',
        },
      },
    });
    await prisma.customer.deleteMany({
      where: {
        name: {
          startsWith: 'app-e2e-customer-',
        },
      },
    });
    await app.close();
  });

  it('/api/v1/health (GET)', async () => {
    const response = await request(app.getHttpServer()).get('/api/v1/health').expect(200);

    expect(response.body).toEqual({
      ok: true,
      data: {
        status: 'ok',
        timestamp: expect.any(String),
        services: {
          database: expect.any(String),
          redis: expect.any(String),
        },
      },
      error: null,
    });
  });

  it('/api/v1/unknown (GET)', async () => {
    const response = await request(app.getHttpServer()).get('/api/v1/unknown').expect(404);

    expect(response.body).toEqual({
      ok: false,
      data: null,
      error: {
        code: 'HTTP_404',
        message: expect.any(String),
      },
    });
  });

  it('/api/v1/auth/stylist/login (POST) validates request body', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/auth/stylist/login')
      .send({ email: 'bad-email', password: '' })
      .expect(400);

    expect(response.body.ok).toBe(false);
    expect(response.body.data).toBeNull();
    expect(response.body.error.code).toBe('HTTP_400');
  });

  it('/api/v1/auth/stylist/login (POST) returns invalid credentials when no matching account exists', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/auth/stylist/login')
      .send({ email: 'missing-app-e2e@example.com', password: 'Passw0rd!' })
      .expect(401);

    expect(response.body).toEqual({
      ok: false,
      data: null,
      error: {
        code: 'AUTH_INVALID_CREDENTIALS',
        message: '邮箱或密码错误',
      },
    });
  });

  it('/api/v1/customers (GET) requires authentication', async () => {
    const response = await request(app.getHttpServer())
      .get('/api/v1/customers')
      .expect(401);

    expect(response.body).toEqual({
      ok: false,
      data: null,
      error: {
        code: 'AUTH_UNAUTHORIZED',
        message: '未登录或登录已失效',
      },
    });
  });

  it('/api/v1/customers (POST) creates a customer with default avatar', async () => {
    const token = await signToken();
    const uniqueSuffix = Date.now();

    const response = await request(app.getHttpServer())
      .post('/api/v1/customers')
      .set('Authorization', token)
      .send({
        name: `app-e2e-customer-${uniqueSuffix}`,
        phone: `090-${String(uniqueSuffix).slice(-4)}-0000`,
        hairLength: 'Medium',
        followStatus: 'NEED_FOLLOW_UP',
        nextVisit: '2026-06-28',
      })
      .expect(201);

    expect(response.body.ok).toBe(true);
    expect(response.body.data.name).toBe(`app-e2e-customer-${uniqueSuffix}`);
    expect(response.body.data.image).toBe(
      'https://storage.googleapis.com/aitori-public/style/sample/066c7ba22ea149268444bc2d919d5b97.png',
    );
  });

  it('/api/v1/customers (GET) returns paginated customers', async () => {
    const token = await signToken();
    const uniqueSuffix = `${Date.now()}-list`;

    await prisma.customer.create({
      data: {
        hairstylistId: BigInt(1),
        name: `app-e2e-customer-${uniqueSuffix}`,
        kana: '',
        phone: `090-${String(Date.now()).slice(-4)}-1111`,
        email: '',
        avatarUrl:
          'https://storage.googleapis.com/aitori-public/style/sample/066c7ba22ea149268444bc2d919d5b97.png',
        contactType: 'LINE',
        hairLength: 'MEDIUM',
        followStatus: 'NEED_FOLLOW_UP',
      },
    });

    const response = await request(app.getHttpServer())
      .get('/api/v1/customers?page=1&pageSize=20&q=app-e2e-customer-&hairLength=MEDIUM&followStatus=NEED_FOLLOW_UP')
      .set('Authorization', token)
      .expect(200);

    expect(response.body.ok).toBe(true);
    expect(response.body.data).toEqual({
      items: expect.any(Array),
      total: expect.any(Number),
      page: 1,
      pageSize: 20,
    });
  });

  it('/api/v1/customers/summary (GET) returns customer summary', async () => {
    const token = await signToken();
    const uniqueSuffix = `${Date.now()}-summary`;
    const customer = await prisma.customer.create({
      data: {
        hairstylistId: BigInt(1),
        name: `app-e2e-customer-${uniqueSuffix}`,
        kana: '',
        phone: `090-${String(Date.now()).slice(-4)}-2222`,
        email: '',
        avatarUrl:
          'https://storage.googleapis.com/aitori-public/style/sample/066c7ba22ea149268444bc2d919d5b97.png',
        contactType: 'LINE',
        nextVisitDate: new Date(),
        followStatus: 'NEED_FOLLOW_UP',
      },
    });

    await prisma.aiHairSimulation.create({
      data: {
        customerId: customer.id,
        hairstylistId: BigInt(1),
        originImage: customer.avatarUrl,
        simulateRemark: `app-e2e-customer-summary-${uniqueSuffix}`,
      },
    });

    const response = await request(app.getHttpServer())
      .get('/api/v1/customers/summary')
      .set('Authorization', token)
      .expect(200);

    expect(response.body.ok).toBe(true);
    expect(response.body.data).toEqual({
      total: expect.any(Number),
      today: expect.any(Number),
      followUp: expect.any(Number),
      simulated: expect.any(Number),
    });
  });

  it('/api/v1/templates (GET) returns an empty list envelope', async () => {
    const response = await request(app.getHttpServer())
      .get('/api/v1/templates')
      .expect(200);

    expect(response.body).toEqual({
      ok: true,
      data: {
        items: [],
        total: 0,
      },
      error: null,
    });
  });

  it('/api/v1/simulations (POST) validates create payload', async () => {
    await request(app.getHttpServer())
      .post('/api/v1/simulations')
      .send({})
      .expect(400);
  });

  it('/api/v1/storage/upload (POST) uploads a file and returns a public url', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/storage/upload')
      .field('type', 'template')
      .attach('file', Buffer.from('hello'), {
        filename: 'look.png',
        contentType: 'image/png',
      })
      .expect(201);

    expect(upload).toHaveBeenCalledWith(
      expect.objectContaining({
        objectKey: expect.stringMatching(/^stylist\/template\/.+\.png$/),
        contentType: 'image/png',
      }),
    );
    expect(response.body.ok).toBe(true);
    expect(response.body.data.objectKey).toMatch(/^stylist\/template\/.+\.png$/);
    expect(response.body.data.url).toBe(
      `https://storage.googleapis.com/aitori-public/${response.body.data.objectKey}`,
    );
  });

  it('/api/v1/storage/upload (POST) rejects requests without a file', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/storage/upload')
      .field('type', 'template')
      .expect(400);

    expect(response.body).toEqual({
      ok: false,
      data: null,
      error: {
        code: 'HTTP_400',
        message: '请选择要上传的文件',
      },
    });
  });

  it('/api/v1/storage/upload (POST) validates type', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/storage/upload')
      .field('type', '../template')
      .attach('file', Buffer.from('hello'), {
        filename: 'look.png',
        contentType: 'image/png',
      })
      .expect(400);

    expect(response.body).toEqual({
      ok: false,
      data: null,
      error: {
        code: 'HTTP_400',
        message: '上传类型不合法',
      },
    });
  });
});