<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2017/12/6 0006
 * Time: 17:30
 */
header('Access-Control-Allow-Origin:*');//允许跨域

$lang = $_REQUEST['lang'];
$imgfile = 'imgfile_'.$lang;
$file = $_FILES[$imgfile];
//$fileName = $_REQUEST['fileName'];
$langList = empty($langStr) ? [] : explode(',', $langStr);

$imgDir = $_POST['imgDir'] ? $_POST['imgDir'] : 'images/activity/'.$lang;
$imgDir = '../'.$imgDir;
//如果语言不为空，则分别把图片上传到每个语言文件夹
if(!empty($lang)) {
    die(upload($file, $imgDir));
}else {
    die(response(4, '参数错误'));
}


/**
 * 移动上传文件到指定文件夹
 * @param $fileName
 * @param $srcFile
 * @param $desImgDir
 * @return json
 */
function move_upload($fileName, $srcFile, $desImgDir)
{
    $uploadPath = getFolder($desImgDir);
    if(!$uploadPath) {
        return response(1, '存放上传图片文件夹创建失败');
    }

    if(empty($srcFile['name'])) {
        return response(2, '上传文件为空');
    }
    $newFile = $uploadPath . '/' . $fileName;

    if(!move_uploaded_file($srcFile[ "tmp_name" ], $newFile)) {
        return response(3, '文件移动出错');
    }
    return response(0, '文件上传成功', ['imgPath' => $fileName]);
}


/**
 * 进行文件上传
 * @param  $imgDir
 * @return json
 */
function upload($file, $imgDir) {
    $uploadPath = getFolder($imgDir);
    if(!$uploadPath) {
        return response(1, '存放上传图片文件夹创建失败');
    }

    if(empty($file['name'])) {
        return response(2, '上传文件为空');
    }
    $fileName = getName($file['name']);
    $newFile = $uploadPath . '/' . $fileName;

    if(!move_uploaded_file($file[ "tmp_name" ], $newFile)) {
        return response(3, '文件移动出错');
    }
    return response(0, '文件上传成功', ['imgPath' => $fileName]);
}

/**
 * 进行文件上传  多语言文件夹图片上传
 * @param  $imgDir
 * @return json
 */
function uploadLangList($file, $imgDir, $langList) {
    if(empty($langList)) {
        return response(4, '上传路径错误');
    }
    $fileName = getName($file['name']);
    $count = 0;
    $tmpFilePath = '';
    foreach ($langList as $lang) {
        $tmpDir = $imgDir . $lang;
        $uploadPath = getFolder($tmpDir);
        if(!$uploadPath) {
            return response(1, '存放上传图片文件夹创建失败');
        }

        if(empty($file['name'])) {
            return response(2, '上传文件为空');
        }
        $newFile = $uploadPath . '/' . $fileName;

        //由于move_uploaded_file会删除之前的文件，所以后面的几张图片改为复制
        if($count == 0 ) {
            if(!move_uploaded_file($file[ "tmp_name" ], $newFile)){
                return response(3, '文件移动出错');
            }
           $tmpFilePath = $newFile;
        }
        if($count > 0) {
           if(!copy($tmpFilePath, $newFile)) {
               return response(5, '文件复制出错');
           }
        }
        $count++;
    }

    return response(0, '文件上传成功', ['imgPath' => $fileName]);
}


//---------end----------

/**
 * 自动创建存储文件夹
 * @return string
 */
 function getFolder($pathStr)
{
    if ( !file_exists( $pathStr ) ) {
        if ( !mkdir( $pathStr , 0777 , true ) ) {
            return false;
        }
    }

    return $pathStr;
}


   /**
    * 重命名文件
    * @return string
    */
 function getName($oriName)
{
    $ext = strtolower(strrchr($oriName, '.'));
    if (!$ext) {
        $ext = '.jpg';
    }
    return $fileName =uniqid().'_'.rand(1, 999).$ext;
}

/**
 * 统一输出返回json内容
 *
 * @access public
 * @date   2016-08-16
 * @param int    $ret  状态码,0成功
 * @param string $msg  错误信息
 * @param array  $data 返回数据内容
 * @return json;
 */
function response($ret = 0, $msg = '', array $data = array())
{
    $result = [
        'ret'  => $ret,
        'msg'  => $msg,
        'data' => $data,
    ];

    return json_encode($result);
}