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import { Global, Inject, Module } from '@nestjs/common';
import Redis from 'ioredis';
import { DataSource } from 'typeorm';
import { createRedisConnection } from '@/redis.js';
import { DI } from './di-symbols.js';
import { loadConfig } from './config.js';
import { createPostgreDataSource } from './postgre.js';
import { RepositoryModule } from './RepositoryModule.js';
import type { Provider, OnApplicationShutdown } from '@nestjs/common';
const config = loadConfig();
const $config: Provider = {
provide: DI.config,
useValue: config,
};
const $db: Provider = {
provide: DI.db,
useFactory: async () => {
const db = createPostgreDataSource();
return await db.initialize();
},
};
const $redis: Provider = {
provide: DI.redis,
useFactory: () => {
const redisClient = createRedisConnection();
return redisClient;
},
};
const $redisSubscriber: Provider = {
provide: DI.redisSubscriber,
useFactory: () => {
const redisSubscriber = createRedisConnection();
redisSubscriber.subscribe(config.host);
return redisSubscriber;
},
};
@Global()
@Module({
imports: [RepositoryModule],
providers: [$config, $db, $redis, $redisSubscriber],
exports: [$config, $db, $redis, $redisSubscriber, RepositoryModule],
})
export class GlobalModule implements OnApplicationShutdown {
constructor(
@Inject(DI.db) private db: DataSource,
@Inject(DI.redis) private redisClient: Redis.Redis,
@Inject(DI.redisSubscriber) private redisSubscriber: Redis.Redis,
) {}
async onApplicationShutdown(signal: string): Promise<void> {
await Promise.all([
this.db.destroy(),
this.redisClient.disconnect(),
this.redisSubscriber.disconnect(),
]);
}
}
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