import { Global, type MiddlewareConsumer, Module, type NestModule, RequestMethod } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { APP_FILTER, APP_INTERCEPTOR } from '@nestjs/core';
import { EventEmitterModule } from '@nestjs/event-emitter';
import { PrometheusModule, makeCounterProvider } from '@willsoto/nestjs-prometheus';
import {
  CacheService,
  CACHE_HIT_TOTAL,
  CACHE_MISS_TOTAL,
  CACHE_DEGRADATION_TOTAL,
} from './infrastructure/cache.service';
// RFC-004 Phase 0 (GOO-172) — durable async messaging backbone is parked
// while the `@goodgo/contracts-events` workspace package is wired up.
// `event-bus/` and `outbox/` subdirectories are excluded from typecheck via
// apps/api/tsconfig.json. Re-enable the imports + providers below once the
// missing types land.
// import { EVENT_BUS, RedisStreamsEventBus } from './infrastructure/event-bus';
import { EventBusService } from './infrastructure/event-bus.service';
import { FieldEncryptionService } from './infrastructure/field-encryption.service';
import { GlobalExceptionFilter } from './infrastructure/filters/global-exception.filter';
import { GeoLookupService } from './infrastructure/geo-lookup.service';
import { DeprecationInterceptor, VersionInterceptor } from './infrastructure/interceptors';
import { LoggerService } from './infrastructure/logger.service';
import { CorrelationIdMiddleware } from './infrastructure/middleware/correlation-id.middleware';
import { CsrfMiddleware } from './infrastructure/middleware/csrf.middleware';
import { RequestLoggingMiddleware } from './infrastructure/middleware/request-logging.middleware';
import { SanitizeInputMiddleware } from './infrastructure/middleware/sanitize-input.middleware';
// import { OutboxRelay, OutboxService } from './infrastructure/outbox';
import { PrismaService } from './infrastructure/prisma.service';
import { RedisService } from './infrastructure/redis.service';
import { TypesenseClientService } from './infrastructure/typesense-client.service';

@Global()
@Module({
  imports: [
    ConfigModule.forRoot({ isGlobal: true }),
    EventEmitterModule.forRoot(),
    PrometheusModule.register({ path: '/metrics', defaultMetrics: { enabled: true } }),
  ],
  providers: [
    LoggerService,
    FieldEncryptionService,
    PrismaService,
    RedisService,
    CacheService,
    EventBusService,
    GeoLookupService,
    // RFC-004 Phase 0 (GOO-172) — see import comment above.
    // { provide: EVENT_BUS, useClass: RedisStreamsEventBus },
    // OutboxService,
    // OutboxRelay,
    TypesenseClientService,
    makeCounterProvider({
      name: CACHE_HIT_TOTAL,
      help: 'Total number of cache hits',
      labelNames: ['resource'],
    }),
    makeCounterProvider({
      name: CACHE_MISS_TOTAL,
      help: 'Total number of cache misses',
      labelNames: ['resource'],
    }),
    makeCounterProvider({
      name: CACHE_DEGRADATION_TOTAL,
      help: 'Total number of cache degradation events',
      labelNames: ['resource', 'operation'],
    }),
    {
      provide: APP_FILTER,
      useClass: GlobalExceptionFilter,
    },
    // RFC-001 Phase 1 (GOO-170) — order matters: VersionInterceptor first
    // populates req.apiVersion; DeprecationInterceptor reads from it.
    {
      provide: APP_INTERCEPTOR,
      useClass: VersionInterceptor,
    },
    {
      provide: APP_INTERCEPTOR,
      useClass: DeprecationInterceptor,
    },
  ],
  exports: [
    PrismaService,
    RedisService,
    CacheService,
    LoggerService,
    EventBusService,
    FieldEncryptionService,
    GeoLookupService,
    TypesenseClientService,
    PrometheusModule,
  ],
})
export class SharedModule implements NestModule {
  configure(consumer: MiddlewareConsumer): void {
    consumer
      .apply(CorrelationIdMiddleware, SanitizeInputMiddleware, RequestLoggingMiddleware)
      .forRoutes('*');

    if (process.env['NODE_ENV'] !== 'test') {
      consumer
        .apply(CsrfMiddleware)
        .exclude(
          // NOTE: Nest 11 + path-to-regexp v8 matches `forRoutes('*')`
          // middleware exclude paths against the FULL request URL — i.e.
          // including the global prefix `api/v1`. Listing both forms keeps
          // the rule resilient if the prefix or matching mode changes.
          { path: 'api/v1/payments/callback/*path', method: RequestMethod.POST },
          { path: 'api/v1/auth/login', method: RequestMethod.POST },
          { path: 'api/v1/auth/register', method: RequestMethod.POST },
          { path: 'api/v1/auth/refresh', method: RequestMethod.POST },
          { path: 'api/v1/auth/exchange-token', method: RequestMethod.POST },
          { path: 'api/v1/auth/logout', method: RequestMethod.POST },
          { path: 'api/v1/auth/forgot-password', method: RequestMethod.POST },
          { path: 'api/v1/auth/reset-password', method: RequestMethod.POST },
          { path: 'api/v1/web-vitals', method: RequestMethod.POST }, // sendBeacon cannot send CSRF headers
          // Legacy controller-relative forms (kept for older path-matching modes).
          { path: 'auth/login', method: RequestMethod.POST },
          { path: 'auth/register', method: RequestMethod.POST },
          { path: 'auth/refresh', method: RequestMethod.POST },
          { path: 'auth/exchange-token', method: RequestMethod.POST },
          { path: 'auth/logout', method: RequestMethod.POST },
          { path: 'auth/forgot-password', method: RequestMethod.POST },
          { path: 'auth/reset-password', method: RequestMethod.POST },
          { path: 'web-vitals', method: RequestMethod.POST },
          { path: 'payments/callback/*path', method: RequestMethod.POST },
        )
        .forRoutes('*');
    }
  }
}