<?php
/**
 * FileSystem.php UTF-8
 * 
 *
 * @date    : 2019/8/9 9:34
 *
 * @license 这不是一个自由软件，未经授权不许任何使用和传播。
 * @author  : luowei <lw@huosdk.com>
 * @version : HuoMp 1.0
 */

namespace FileSystem;

use Xxtime\Flysystem\Aliyun\OssAdapter;
use League\Flysystem\Filesystem as LeagueFilesystem;

/**
 * 文件系统工厂类
 * Class FileSystem
 * Usage
 *
 * // Write Files
 * $filesystem->write('path/to/file.txt', 'contents');
 * // get RAW data from aliYun OSS
 * $raw = $aliyun->supports->getFlashData();
 *
 * // Write Use writeStream
 * $stream = fopen('local/path/to/file.txt', 'r+');
 * $result = $filesystem->writeStream('path/to/file.txt', $stream);
 * if (is_resource($stream)) {
 *     fclose($stream);
 * }
 *
 * // Update Files
 * $filesystem->update('path/to/file.txt', 'new contents');
 *
 * // Check if a file exists
 * $exists = $filesystem->has('path/to/file.txt');
 *
 * // Read Files
 * $contents = $filesystem->read('path/to/file.txt');
 *
 * // Delete Files
 * $filesystem->delete('path/to/file.txt');
 *
 * // Rename Files
 * $filesystem->rename('filename.txt', 'newname.txt');
 *
 * // Copy Files
 * $filesystem->copy('filename.txt', 'duplicate.txt');
 *
 *
 * @package FileSystem
 */
class FileSystem {
    private static $adapter;
    /**
     * @param array $config
     *
     * @return LeagueFilesystem
     * @throws \Exception
     */
    public static function create($config = []) {
        if (empty($config)) {
            $config = config('filesystem');
        }
        $_default = get_val($config, 'default', 'oss');
        try {
            switch ($_default) {
                case 'oss':
                    $_driver_config = get_val($config, 'oss', []);
                    $_adapter = new OssAdapter($_driver_config);

                    break;
                default:
                    $_driver_config = get_val($config, 'oss', []);
                    $_adapter = new OssAdapter($_driver_config);
            }
            self::setAdapter($_adapter);
            $filesystem = new LeagueFilesystem($_adapter);
        } catch (\Exception $exception) {
            throw new $exception;
        }

        return $filesystem;
    }

    /**
     * @return mixed
     */
    public static function getAdapter() {
        return self::$adapter;
    }

    /**
     * @param mixed $adapter
     */
    public static function setAdapter($adapter) {
        self::$adapter = $adapter;
    }
}