// Folder to save all uploaded PDFs
$folder = __DIR__ . "/clientFiles/";

// Create the folder if missing
if (!file_exists($folder)) {
    mkdir($folder, 0777, true);
}

// Check for uploaded file
if (!isset($_FILES['pdfFile'])) {
    http_response_code(400);
    echo "No file received.";
    exit;
}

$file = $_FILES['pdfFile'];
$fileName = basename($file['name']);
$targetPath = $folder . $fileName;

// Move the file into your folder
if (move_uploaded_file($file['tmp_name'], $targetPath)) {
    echo "Saved: " . $fileName;
} else {
    http_response_code(500);
    echo "Failed to save file.";
}
";
}