import { Controller, Get, HttpException, HttpStatus } from "@nestjs/common";
import { getPrismaClient } from "@b2bcall/database";
import { getRedisClient } from "../common/redis";

@Controller("health")
export class HealthController {
  @Get()
  root() {
    return { status: "ok" };
  }

  @Get("live")
  live() {
    return { status: "ok" };
  }

  @Get("ready")
  async ready() {
    const checks: Record<string, "ok" | "fail"> = { postgres: "ok", redis: "ok" };

    try {
      await getPrismaClient().$queryRaw`SELECT 1`;
    } catch {
      checks.postgres = "fail";
    }

    try {
      await getRedisClient().ping();
    } catch {
      checks.redis = "fail";
    }

    const healthy = Object.values(checks).every((v) => v === "ok");
    if (!healthy) {
      throw new HttpException({ status: "unhealthy", checks }, HttpStatus.SERVICE_UNAVAILABLE);
    }

    return { status: "ok", checks };
  }
}