Assist_Design/apps/bff/src/app.module.ts

import { Module } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { ThrottlerModule } from '@nestjs/throttler';
import { AuthModule } from './auth/auth.module';
import { UsersModule } from './users/users.module';
import { MappingsModule } from './mappings/mappings.module';
import { CatalogModule } from './catalog/catalog.module';
import { OrdersModule } from './orders/orders.module';
import { InvoicesModule } from './invoices/invoices.module';
import { SubscriptionsModule } from './subscriptions/subscriptions.module';
import { CasesModule } from './cases/cases.module';
import { WebhooksModule } from './webhooks/webhooks.module';
import { VendorsModule } from './vendors/vendors.module';
import { JobsModule } from './jobs/jobs.module';
import { HealthModule } from './health/health.module';
import { PrismaModule } from './common/prisma/prisma.module';
import { AuditModule } from './common/audit/audit.module';
import { RedisModule } from './common/redis/redis.module';
import { LoggingModule } from './common/logging/logging.module';
import { CacheModule } from './common/cache/cache.module';
import * as path from 'path';
import { validateEnv } from './common/config/env.validation';

// Support multiple .env files across environments and run contexts
const repoRoot = path.resolve(__dirname, '../../../..');
const nodeEnv = process.env.NODE_ENV || 'development';
const envFilePath = [
  // Prefer repo root env files
  path.resolve(repoRoot, `.env.${nodeEnv}.local`),
  path.resolve(repoRoot, `.env.${nodeEnv}`),
  path.resolve(repoRoot, '.env.local'),
  path.resolve(repoRoot, '.env'),
  // Fallback to local working directory
  `.env.${nodeEnv}.local`,
  `.env.${nodeEnv}`,
  '.env.local',
  '.env',
];

@Module({
  imports: [
    // Configuration
    ConfigModule.forRoot({
      isGlobal: true,
      envFilePath,
      validate: validateEnv,
    }),
    
    // Logging
    LoggingModule,
    
    // Rate limiting
    ThrottlerModule.forRoot([
      {
        ttl: 60000, // 1 minute
        limit: 100, // 100 requests per minute
      },
    ]),

    // Core modules
    PrismaModule,
    RedisModule,
    CacheModule,
    AuditModule,
    VendorsModule,
    JobsModule,
    HealthModule,
    
    // Feature modules
    AuthModule,
    UsersModule,
    MappingsModule,
    CatalogModule,
    OrdersModule,
    InvoicesModule,
    SubscriptionsModule,
    CasesModule,
    WebhooksModule,
  ],
})
export class AppModule {}