import { Module } from '@nestjs/common';
import { TerminusModule } from '@nestjs/terminus';
import { HttpModule } from '@nestjs/axios';
import { HealthController } from './health.controller';
import { TypeOrmHealthIndicator } from './indicators/typeorm.health';
import { DbPoolStatsIndicator } from './indicators/db-pool-stats.health';
import { ConfigModule } from '@nestjs/config';
import { PrometheusModule } from '@willsoto/nestjs-prometheus';
import { metricProviders } from './metrics/metrics.config';
import { CustomMetricsService } from './metrics/custom.metrics';
import { MetricsInterceptor } from './metrics/metrics.interceptor';
import { HealthAlertService } from './alert/health-alert.service';
import { APP_INTERCEPTOR } from '@nestjs/core';

@Module({
  imports: [
    TerminusModule,
    HttpModule,
    ConfigModule,
    PrometheusModule.register({
      path: '/metrics',
      defaultMetrics: {
        enabled: true,
      },
    }),
  ],
  controllers: [HealthController],
  providers: [
    TypeOrmHealthIndicator, 
    DbPoolStatsIndicator,
    CustomMetricsService,
    HealthAlertService,
    {
      provide: APP_INTERCEPTOR,
      useClass: MetricsInterceptor,
    },
    ...metricProviders,
  ],
  exports: [
    CustomMetricsService,
    HealthAlertService,
  ],
})
export class HealthModule {}