import { INestApplication, ValidationPipe } from '@nestjs/common';
import { Test, TestingModule } from '@nestjs/testing';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { TypeOrmModule } from '@nestjs/typeorm';
import { JwtModule, JwtService } from '@nestjs/jwt';
import * as request from 'supertest';
import { DataSource } from 'typeorm';
import * as bcrypt from 'bcrypt';

import { AuthModule } from '../src/modules/auth/auth.module';
import { UsersModule } from '../src/modules/users/users.module';
import { CreditsModule } from '../src/modules/credits/credits.module';
import { User } from '../src/modules/users/entities/user.entity';
import { Otp } from '../src/modules/auth/entities/otp.entity';
import { RefreshToken } from '../src/modules/auth/entities/refresh-token.entity';
import { CreditBalance } from '../src/modules/credits/entities/credit-balance.entity';
import { CreditTransaction, TransactionType } from '../src/modules/credits/entities/credit-transaction.entity';
import { CreditPackage } from '../src/modules/credits/entities/credit-package.entity';

describe('CreditsController (e2e)', () => {
  let app: INestApplication;
  let dataSource: DataSource;
  let jwtService: JwtService;
  let accessToken: string;
  let userId: string;

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [
        ConfigModule.forRoot({
          isGlobal: true,
        }),
        TypeOrmModule.forRootAsync({
          imports: [ConfigModule],
          useFactory: () => ({
            type: 'postgres',
            host: process.env.DATABASE_HOST || 'localhost',
            port: parseInt(process.env.DATABASE_PORT || '5433'),
            username: process.env.DATABASE_USER || 'postgres',
            password: process.env.DATABASE_PASSWORD || 'postgres',
            database: process.env.DATABASE_NAME || 'miinventario_test',
            entities: [User, Otp, RefreshToken, CreditBalance, CreditTransaction, CreditPackage],
            synchronize: true,
            dropSchema: true,
          }),
          inject: [ConfigService],
        }),
        JwtModule.register({
          secret: 'test-secret',
          signOptions: { expiresIn: '15m' },
        }),
        AuthModule,
        UsersModule,
        CreditsModule,
      ],
    })
      .overrideProvider(ConfigService)
      .useValue({
        get: (key: string, defaultValue?: any) => {
          const config: Record<string, any> = {
            NODE_ENV: 'development',
            DATABASE_HOST: process.env.DATABASE_HOST || 'localhost',
            DATABASE_PORT: parseInt(process.env.DATABASE_PORT || '5433'),
            DATABASE_NAME: process.env.DATABASE_NAME || 'miinventario_test',
            DATABASE_USER: process.env.DATABASE_USER || 'postgres',
            DATABASE_PASSWORD: process.env.DATABASE_PASSWORD || 'postgres',
            JWT_SECRET: 'test-secret',
            JWT_EXPIRES_IN: '15m',
            JWT_REFRESH_SECRET: 'test-refresh-secret',
            JWT_REFRESH_EXPIRES_IN: '7d',
          };
          return config[key] ?? defaultValue;
        },
      })
      .compile();

    app = moduleFixture.createNestApplication();
    app.useGlobalPipes(
      new ValidationPipe({
        whitelist: true,
        forbidNonWhitelisted: true,
        transform: true,
      }),
    );

    await app.init();
    dataSource = moduleFixture.get<DataSource>(DataSource);
    jwtService = moduleFixture.get<JwtService>(JwtService);
  });

  afterAll(async () => {
    if (dataSource?.isInitialized) {
      await dataSource.destroy();
    }
    await app.close();
  });

  beforeEach(async () => {
    // Clean up
    await dataSource.query('DELETE FROM credit_transactions');
    await dataSource.query('DELETE FROM credit_packages');
    await dataSource.query('DELETE FROM credit_balances');
    await dataSource.query('DELETE FROM refresh_tokens');
    await dataSource.query('DELETE FROM otps');
    await dataSource.query('DELETE FROM users');

    // Create test user
    const passwordHash = await bcrypt.hash('testpassword123', 10);
    const result = await dataSource.query(
      `INSERT INTO users (id, phone, name, "passwordHash", role, "isActive")
       VALUES (uuid_generate_v4(), '5512345678', 'Test User', $1, 'USER', true)
       RETURNING id`,
      [passwordHash],
    );
    userId = result[0].id;

    // Create credit balance
    await dataSource.query(
      `INSERT INTO credit_balances (id, "userId", balance, "totalPurchased", "totalConsumed", "totalFromReferrals")
       VALUES (uuid_generate_v4(), $1, 150, 100, 0, 50)`,
      [userId],
    );

    // Create credit packages
    await dataSource.query(`
      INSERT INTO credit_packages (id, name, description, credits, "priceMXN", "isPopular", "isActive", "sortOrder")
      VALUES
        (uuid_generate_v4(), 'Starter', 'Perfecto para probar', 10, 49.00, false, true, 1),
        (uuid_generate_v4(), 'Basico', 'Para uso regular', 30, 129.00, false, true, 2),
        (uuid_generate_v4(), 'Popular', 'El mas vendido', 75, 299.00, true, true, 3)
    `);

    // Create some transactions
    await dataSource.query(
      `INSERT INTO credit_transactions (id, "userId", type, amount, "balanceAfter", description)
       VALUES
         (uuid_generate_v4(), $1, 'PURCHASE', 100, 100, 'Compra de paquete Basico'),
         (uuid_generate_v4(), $1, 'REFERRAL_BONUS', 50, 150, 'Bonus por referido'),
         (uuid_generate_v4(), $1, 'CONSUMPTION', -10, 140, 'Procesamiento de video')`,
      [userId],
    );

    // Generate token
    accessToken = jwtService.sign({ sub: userId });
  });

  describe('GET /credits/balance', () => {
    it('should return credit balance', async () => {
      const response = await request(app.getHttpServer())
        .get('/credits/balance')
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200);

      expect(response.body).toMatchObject({
        balance: 150,
        totalPurchased: 100,
        totalConsumed: 0,
        totalFromReferrals: 50,
      });
    });

    it('should fail without authentication', async () => {
      await request(app.getHttpServer())
        .get('/credits/balance')
        .expect(401);
    });
  });

  describe('GET /credits/transactions', () => {
    it('should return transaction history', async () => {
      const response = await request(app.getHttpServer())
        .get('/credits/transactions')
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200);

      expect(response.body.transactions).toHaveLength(3);
      expect(response.body.total).toBe(3);
      expect(response.body.page).toBe(1);
      expect(response.body).toHaveProperty('hasMore');
    });

    it('should support pagination', async () => {
      const response = await request(app.getHttpServer())
        .get('/credits/transactions?page=1&limit=2')
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200);

      expect(response.body.transactions).toHaveLength(2);
      expect(response.body.limit).toBe(2);
      expect(response.body.hasMore).toBe(true);
    });

    it('should fail without authentication', async () => {
      await request(app.getHttpServer())
        .get('/credits/transactions')
        .expect(401);
    });
  });

  describe('GET /credits/packages', () => {
    it('should return available packages', async () => {
      const response = await request(app.getHttpServer())
        .get('/credits/packages')
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200);

      expect(response.body).toHaveLength(3);
      expect(response.body[0]).toHaveProperty('name');
      expect(response.body[0]).toHaveProperty('credits');
      expect(response.body[0]).toHaveProperty('priceMXN');

      // Check popular flag
      const popularPackage = response.body.find((p: any) => p.isPopular);
      expect(popularPackage.name).toBe('Popular');
    });

    it('should fail without authentication', async () => {
      await request(app.getHttpServer())
        .get('/credits/packages')
        .expect(401);
    });
  });
});