// Get the input
$input = json_decode(file_get_contents('php://input'), true);
$fileKey = $input['file_key'] ?? null;

if (!$fileKey) {
    echo json_encode(['success' => false, 'error' => 'File key not provided']);
    exit;
}

try {
    $minio = new MinioUploader();

    // Parse bucket and key from URL (same logic as membership system)
    $urlParts = parse_url($fileKey);
    if (isset($urlParts['path'])) {
        $pathParts = explode('/', ltrim($urlParts['path'], '/'));
        // e.g. /bucket/key
        if (count($pathParts) >= 2) {
            $bucket = $pathParts[0];
            $key = implode('/', array_slice($pathParts, 1));
            $presignedUrl = $minio->getPresignedUrl($bucket, $key, 600);

            if ($presignedUrl) {
                echo json_encode(['success' => true, 'url' => $presignedUrl]);
            } else {
                echo json_encode(['success' => false, 'error' => 'Failed to generate presigned URL']);
            }
        } else {
            echo json_encode(['success' => false, 'error' => 'Invalid file path format']);
        }
    } else {
        echo json_encode(['success' => false, 'error' => 'Invalid URL format']);
    }
} catch (Exception $e) {
    error_log("Error generating presigned URL: " . $e->getMessage());
    echo json_encode(['success' => false, 'error' => 'Internal server error']);
}
?>