import { Controller, Get } from '@nestjs/common';
import { Public } from './common/auth';
import { PrismaService } from './prisma/prisma.service';

@Controller()
export class HealthController {
  constructor(private readonly prisma: PrismaService) {}

  /** 探活。数据库不可用时不返回 500，只标记 db 状态，便于区分进程挂掉与数据库挂掉。 */
  @Public()
  @Get('healthz')
  async health() {
    let db = 'ok';
    try {
      // 固定查生产库：探活关心的是主库是否可用
      await this.prisma.main.$queryRaw`SELECT 1`;
    } catch {
      db = 'down';
    }
    return { status: 'ok', db, time: new Date().toISOString() };
  }
}