<?php
// ── RESOLUSI ENVIRONMENT VARIABLE ────────────────────────────────────────────
// Dipakai oleh api/config.php dan docker/init-db.php. Prioritas nilai mengikuti
// perilaku Coolify (lihat coolify-deployment.md Aturan #1):
//   env var asli (Coolify/Docker) > file .env di root project > default.
// File .env opsional — di dalam container memang tidak ada.

function loadEnvFile(string $path): array
{
    if (!is_file($path)) {
        return [];
    }

    $vars = [];
    foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line) {
        if (str_starts_with(trim($line), '#') || !str_contains($line, '=')) continue;
        [$key, $value] = explode('=', $line, 2);
        $vars[trim($key)] = trim($value);
    }
    return $vars;
}

function env(string $key): ?string
{
    static $fileVars = null;
    if ($fileVars === null) {
        $fileVars = loadEnvFile(__DIR__ . '/../.env');
    }

    $real = getenv($key);
    if ($real !== false && $real !== '') {
        return $real;
    }
    return ($fileVars[$key] ?? '') !== '' ? $fileVars[$key] : null;
}

// Nama variabel project ini (DB_NAME/DB_USER/DB_PASS) maupun alias gaya Laravel
// (DB_DATABASE/DB_USERNAME/DB_PASSWORD) sama-sama diterima — lihat Aturan #2.
function dbConfig(): array
{
    $envAny = function (array $keys, string $default): string {
        foreach ($keys as $key) {
            $value = env($key);
            if ($value !== null) return $value;
        }
        return $default;
    };

    return [
        'host'     => $envAny(['DB_HOST'], 'localhost'),
        'port'     => $envAny(['DB_PORT'], '3306'),
        'dbname'   => $envAny(['DB_NAME', 'DB_DATABASE'], ''),
        'username' => $envAny(['DB_USER', 'DB_USERNAME'], 'root'),
        'password' => $envAny(['DB_PASS', 'DB_PASSWORD'], ''),
    ];
}