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

mysqli_report(MYSQLI_REPORT_OFF);

if (!function_exists('loadDatabaseConfig')) {
    function loadDatabaseConfig(): array {
        // Load .env if exists (for local development)
        $envFile = __DIR__ . '/.env';
        if (file_exists($envFile)) {
            $lines = file($envFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
            foreach ($lines as $line) {
                if (trim($line) === '' || strpos(trim($line), '#') === 0) continue;
                $parts = explode('=', $line, 2);
                if (count($parts) === 2) {
                    $name = trim($parts[0]);
                    $value = trim($parts[1]);
                    // Strip quotes if any
                    if (strlen($value) >= 2 && ($value[0] === '"' || $value[0] === "'") && $value[0] === $value[-1]) {
                        $value = substr($value, 1, -1);
                    }
                    if (!array_key_exists($name, $_SERVER) && !array_key_exists($name, $_ENV)) {
                        putenv(sprintf('%s=%s', $name, $value));
                        $_ENV[$name] = $value;
                        $_SERVER[$name] = $value;
                    }
                }
            }
        }

        // Use $_SERVER or $_ENV first as Coolify/Docker usually passes them there, fallback to getenv
        $config = [
            'host'    => $_SERVER['DB_HOST'] ?? $_ENV['DB_HOST'] ?? getenv('DB_HOST') ?: '127.0.0.1',
            'user'    => $_SERVER['DB_USER'] ?? $_ENV['DB_USER'] ?? getenv('DB_USER') ?: 'root',
            'pass'    => $_SERVER['DB_PASS'] ?? $_ENV['DB_PASS'] ?? getenv('DB_PASS') ?: '',
            'name'    => $_SERVER['DB_NAME'] ?? $_ENV['DB_NAME'] ?? getenv('DB_NAME') ?: 'webgis_class',
            'port'    => (int)($_SERVER['DB_PORT'] ?? $_ENV['DB_PORT'] ?? getenv('DB_PORT') ?: 3306),
            'charset' => $_SERVER['DB_CHARSET'] ?? $_ENV['DB_CHARSET'] ?? getenv('DB_CHARSET') ?: 'utf8mb4',
        ];

        // Only allow local override if we are truly in a local environment
        $localConfigFile = __DIR__ . '/webgis_class/api/config/database.local.php';
        if (is_file($localConfigFile) && ($config['host'] === '127.0.0.1' || $config['host'] === 'localhost')) {
            $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_PORT',    $dbConfig['port']);
define('DB_CHARSET', $dbConfig['charset']);

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