<?php
namespace Upload\Lib\View;

use Dever;
Dever::apply('sdk/sina', 'upload');

class Sina
{
    private $client;
    private $token;
    private $auth;
    private $bucket;

    # 连接
    public function connect($config, $upload, $file = null)
    {
        $this->auth = new \SCS($config['appkey'], $config['appsecret']);
        $this->auth->setExceptions(true);
        $this->bucket = $upload['bucket'];
        return $this;
    }

    # 删除文件
    public function delete($file, $bucket = false)
    {
        $bucket = $bucket ? $bucket : $this->bucket;
        $result = $this->auth->deleteObject($bucket, $file);

        return $result;
    }

    # 下载文件
    public function download($bucket, $file, $local = false)
    {
    	$temp_file = tempnam(sys_get_temp_dir(), 'Tux');

        $ret = $this->auth->getObject($bucket, $file, $temp_file);

        $content = file_get_contents($temp_file);

        return $content;
    }

    # 上传文件
    public function upload($file, $source_file, $options = array(), $base64 = false)
    {
    	try {
	        if ($base64) {
	            $ret = $this->auth->putObject($source_file, $this->bucket, $file, \SCS::ACL_PUBLIC_READ, array(), array('Content-Type' => 'text/plain'));

	        } elseif (strstr($source_file, 'http')) {
	        	$source_file = file_get_contents($source_file);
	            $ret = $this->auth->putObject($source_file, $this->bucket, $file, \SCS::ACL_PUBLIC_READ, array(), array('Content-Type' => 'text/plain'));
	        } else {
	            //$ret = $this->auth->putObject($this->auth->inputFile($source_file, false), $this->bucket, $file, \SCS::ACL_PUBLIC_READ);
	            //初始化上传
			    $info = $this->auth->initiateMultipartUpload($this->bucket, $file, \SCS::ACL_PUBLIC_READ);
			    $uploadId = $info['upload_id'];
			    $fp = fopen($source_file, 'rb');
			    $i = 1;
			    $part_info = array();

			    while (!feof($fp)) {
			        /*上传分片，一个分片512KB*/
			        $res = $this->auth->putObject($this->auth->inputResourceMultipart($fp, 1024 * 512, $uploadId, $i), $this->bucket, $file);
			        if (isset($res['hash'])) {
			            $part_info[] = array(
			                'PartNumber' => $i,
			                'ETag' => $res['hash'],
			            );
			        }
			        $i++;
			    }

			    //列分片
			    $parts = $this->auth->listParts($this->bucket, $file, $uploadId);

			    if (count($parts) > 0 && count($parts) == count($part_info)) {
			        foreach ($parts as $part_number => $part) {
			            if ($part['etag'] != $part_info[$part_number - 1]['ETag']) {
			                Dever::alert('上传失败');
			                break;
			            }
			        }
			        //合并分片
			        $this->auth->completeMultipartUpload($this->bucket, $file, $uploadId, $part_info);
			        fclose($fp);
			    }
			    $ret = true;
	        }
	    } catch (\SCSException $e) {
		    Dever::alert('上传失败：' . $e->getMessage());
		}

        return $ret;
    }
}