import 'reflect-metadata';

import { type INestApplicationContext, type NestApplicationOptions } from '@nestjs/common';
import { NestFactory } from '@nestjs/core';
import path from 'node:path';

import { loadSchedulerProcessConfig } from '../../../libs/config/src/load-process-env';
import {
  toSafeRuntimeSummary,
  type SchedulerRuntimeConfig,
} from '../../../libs/config/src/runtime-config';
import { waitForShutdownSignal } from '../../../libs/infrastructure/src/process-lifecycle';
import { SchedulerModule } from './scheduler.module';

/** Scheduler 引导参数确保模块只读取本进程已校验的最小配置。 */
interface BootstrapSchedulerOptions {
  config: SchedulerRuntimeConfig;
  logger?: NestApplicationOptions['logger'];
}

/** 启动无 HTTP 端口的 Scheduler 应用上下文，生命周期由命令入口持有。 */
export async function bootstrapScheduler(
  options: BootstrapSchedulerOptions,
): Promise<INestApplicationContext> {
  const app = await NestFactory.createApplicationContext(SchedulerModule.register(options.config), {
    logger: options.logger,
  });
  return app;
}

async function runScheduler(): Promise<void> {
  const config = loadSchedulerProcessConfig();
  console.info('Scheduler 进程启动配置', toSafeRuntimeSummary(config));
  const app = await bootstrapScheduler({ config });
  await waitForShutdownSignal(app);
}

if (process.argv[1] && path.resolve(process.argv[1]) === path.resolve(__filename)) {
  void runScheduler();
}