<?php

namespace Flow;

/**
 * Class Basic
 *
 * Example for handling basic uploads
 *
 * @package Flow
 */
class Basic
{
    /**
     * @param  string                 $destination where to save file
     * @param  string|ConfigInterface $config
     * @param  RequestInterface       $request     optional
     * @return bool
     */
    public static function save($destination, $config, RequestInterface $request = null)
    {
        if (!$config instanceof ConfigInterface) {
            $config = new Config(array(
                'tempDir' => $config,
            ));
        }

        $file = new File($config, $request);

        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            if ($file->checkChunk()) {
                header("HTTP/1.1 200 Ok");
            } else {
                // The 204 response MUST NOT include a message-body, and thus is always terminated by the first empty line after the header fields.
                header("HTTP/1.1 204 No Content");
                return false;
            }
        } else {
            if ($file->validateChunk()) {
                $file->saveChunk();
            } else {
                // error, invalid chunk upload request, retry
                header("HTTP/1.1 400 Bad Request");
                return false;
            }
        }

        if ($file->validateFile() && $file->save($destination)) {
            return true;
        }

        return false;
    }
}