/**
 * ════════════════════════════════════════════════════════════
 * مُصادَق (Musadaq) — Root Application Module
 * ════════════════════════════════════════════════════════════
 */

import { Module } from '@nestjs/common';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { TypeOrmModule } from '@nestjs/typeorm';
import { ThrottlerModule, ThrottlerGuard } from '@nestjs/throttler';
import { APP_GUARD, APP_INTERCEPTOR } from '@nestjs/core';

import { BullModule } from '@nestjs/bull';
import { envValidationSchema } from './config/env.validation';
import { databaseConfig } from './config/database.config';

import { HealthController } from './modules/health/health.controller';
import { AuthModule } from './modules/auth/auth.module';
import { TenantsModule } from './modules/tenants/tenant.module';
import { UsersModule } from './modules/users/user.module';
import { CompaniesModule } from './modules/companies/company.module';
import { SubscriptionsModule } from './modules/subscriptions/subscription.module';
import { InvoicesModule } from './modules/invoices/invoice.module';
import { AuditLogInterceptor } from './common/interceptors/audit-log.interceptor';

@Module({
  imports: [
    // ── Configuration ─────────────────────────────────────────
    ConfigModule.forRoot({
      isGlobal: true,
      validationSchema: envValidationSchema,
      cache: true,
    }),

    // ── Database (TypeORM) ────────────────────────────────────
    TypeOrmModule.forRootAsync(databaseConfig),

    // ── Queue (Bull/Redis) ────────────────────────────────────
    BullModule.forRootAsync({
      imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: (configService: ConfigService) => ({
        redis: {
          host: configService.getOrThrow<string>('REDIS_HOST'),
          port: configService.getOrThrow<number>('REDIS_PORT'),
        },
      }),
    }),

    // ── Rate Limiting (Throttler) ─────────────────────────────
    ThrottlerModule.forRoot([{
      name: 'short',
      ttl: 1000,   // 1 second
      limit: 3,    // 3 requests
    }, {
      name: 'long',
      ttl: 60000,  // 1 minute
      limit: 100,  // 100 requests
    }]),

    // ── Functional Modules ────────────────────────────────────
    AuthModule,
    TenantsModule,
    UsersModule,
    CompaniesModule,
    SubscriptionsModule,
    InvoicesModule,
  ],
  providers: [
    // Global Rate Limiting Guard
    {
      provide: APP_GUARD,
      useClass: ThrottlerGuard,
    },
    // Global Audit Log Interceptor
    {
      provide: APP_INTERCEPTOR,
      useClass: AuditLogInterceptor,
    },
  ],
  controllers: [HealthController],
})
export class AppModule {}