<?php
namespace App\Controllers;

use App\Helpers\Response;
use App\Middleware\JwtAuthMiddleware;
use App\Middleware\RoleGuard;
use App\Models\Model;

/**
 * Class SettingController
 * System Settings & Configuration REST API Controller
 *
 * @package App\Controllers
 */
class SettingController
{
    /**
     * GET /api/v1/settings - Get all system settings
     */
    public function index(): void
    {
        $db = Model::getDB();
        $stmt = $db->query("SELECT * FROM system_settings");
        $settings = $stmt->fetchAll();

        $formatted = [];
        foreach ($settings as $s) {
            $formatted[$s['setting_key']] = $s['setting_value'];
        }

        Response::success('ค่าการตั้งค่าระบบทั้งหมด', $formatted);
    }

    /**
     * PUT /api/v1/settings - Update Settings (Admin only)
     */
    public function update(): void
    {
        JwtAuthMiddleware::handle();
        RoleGuard::check(['Admin', 'Manager']);

        $input = json_decode(file_get_contents('php://input'), true) ?? $_POST;
        if (empty($input) || !is_array($input)) {
            Response::error('ข้อมูลการตั้งค่าไม่ถูกต้อง', 400);
        }

        $db = Model::getDB();
        $stmt = $db->prepare("INSERT INTO system_settings (setting_key, setting_value, setting_group) 
                              VALUES (:key, :val, 'general') 
                              ON DUPLICATE KEY UPDATE setting_value = :val2");

        foreach ($input as $key => $val) {
            $stmt->execute(['key' => $key, 'val' => (string)$val, 'val2' => (string)$val]);
        }

        Response::success('บันทึกการตั้งค่าระบบเรียบร้อยแล้ว', $input);
    }
}