/***********************************************************************************************************************************************************************
 * File Name: health.controller.js
 * Type of Program: Controller
 * Description: HTTP layer for health check endpoints. No check logic lives here —
 *              all checks and payload assembly are handled by services/health.service.js.
 *
 *   GET /api/health        → dashboard  (rich human-readable, runs all checks)
 *   GET /api/health/ready  → readiness  (compact machine-readable, 200 or 503)
 *
 * Author: Kenneth Obsequio (@lash0000)
 * Date Created: Jun. 20, 2026
 ***********************************************************************************************************************************************************************/
"use strict";

const { runDashboard, runReadiness } = require('../services/health.service');

// ─── GET /api/health ─────────────────────────────────────────────────────────
//
// Human-readable dashboard — runs all checks and returns full context:
// app metadata, system info, and per-service connection details.
//
// Used by: developers, monitoring dashboards, manual inspection.

exports.dashboard = async (_req, res) => {
  const { httpStatus, body } = await runDashboard();
  res.status(httpStatus).json(body);
};

// ─── GET /api/health/ready ───────────────────────────────────────────────────
//
// Machine-readable readiness check — compact response, meaningful HTTP status.
// HTTP 200 → healthy or degraded (safe to route traffic)
// HTTP 503 → unhealthy (critical dependency down; do not route traffic here)
//
// Used by: Kubernetes readiness probe, load balancers, deployment gate scripts.

exports.readiness = async (_req, res) => {
  const { httpStatus, body } = await runReadiness();
  res.status(httpStatus).json(body);
};