<?php
// api/config/database.php

mysqli_report(MYSQLI_REPORT_OFF);

if (!function_exists('loadDatabaseConfig')) {
    function loadDatabaseConfig(): array {
        $config = [
            'host' => getenv('DB_HOST') ?: 'localhost',
            'user' => getenv('DB_USER') ?: 'root',
            'pass' => getenv('DB_PASS') ?: '',
            'name' => getenv('DB_NAME') ?: 'webgis',
            'charset' => getenv('DB_CHARSET') ?: 'utf8mb4',
        ];

        $localConfigFile = __DIR__ . '/database.local.php';
        if (is_file($localConfigFile)) {
            $localConfig = require $localConfigFile;
            if (is_array($localConfig)) {
                $config = array_merge($config, array_intersect_key($localConfig, $config));
            }
        }

        return $config;
    }
}

$dbConfig = loadDatabaseConfig();

define('DB_HOST', $dbConfig['host']);
define('DB_USER', $dbConfig['user']);
define('DB_PASS', $dbConfig['pass']);
define('DB_NAME', $dbConfig['name']);
define('DB_CHARSET', $dbConfig['charset']);

function getDB(): mysqli {
    static $conn = null;
    if ($conn === null) {
        $conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
        if ($conn->connect_error) {
            error_log('DB connection failed: ' . $conn->connect_error);
            http_response_code(500);
            echo json_encode([
                'status'  => 'error',
                'message' => 'Koneksi database gagal'
            ]);
            exit;
        }
        $conn->set_charset(DB_CHARSET);
    }
    return $conn;
}