/**
 * @fileoverview flash上传方案，基于龙藏写的ajbridge内的uploader
 * @author 剑平（明河）<minghe36@126.com>
 **/
KISSY.add('gallery/form/1.3/uploader/type/flash', function (S, Node, UploadType, swfUploader) {
    var EMPTY = '', LOG_PREFIX = '[uploader-FlashType]:';
    if(S.FlashType) return S.FlashType;
    /**
     * @name FlashType
     * @class flash上传方案，基于龙藏写的ajbridge内的uploader
     * @constructor
     * @extends UploadType
     * @requires Node
     */
    function FlashType(config) {
        var self = this;
        //调用父类构造函数
        FlashType.superclass.constructor.call(self, config);
        self.isHasCrossdomain();
        self._init();
    }

    S.mix(FlashType, /** @lends FlashType.prototype*/{
        /**
         * 事件列表
         */
        event:S.merge(UploadType.event, {
            //swf文件已经准备就绪
            SWF_READY: 'swfReady',
            //正在上传
            PROGRESS:'progress'
        })
    });

    S.extend(FlashType, UploadType, /** @lends FlashType.prototype*/{
        /**
         * 初始化
         */
        _init:function () {
            var self = this, swfUploader = self.get('swfUploader');
            if(!swfUploader){
                S.log(LOG_PREFIX + 'swfUploader对象为空！');
                return false;
            }
            //SWF 内容准备就绪
            swfUploader.on('contentReady', function(ev){
                self.fire(FlashType.event.SWF_READY);
            }, self);
            //监听开始上传事件
            swfUploader.on('uploadStart', self._uploadStartHandler, self);
            //监听文件正在上传事件
            swfUploader.on('uploadProgress', self._uploadProgressHandler, self);
            //监听文件上传完成事件
            swfUploader.on('uploadCompleteData',self._uploadCompleteDataHandler,self);
            //监听文件失败事件
            swfUploader.on('uploadError',self._uploadErrorHandler,self);
        },
        /**
         * 上传文件
         * @param {String} id 文件id
         * @return {FlashType}
         */
        upload: function (id) {
            var self = this, swfUploader = self.get('swfUploader'),
                action = self.get('action'), method = 'POST',
                data = self.get('data'),
                name = self.get('fileDataName');
            if(!name) name = 'Filedata';
            self.set('uploadingId',id);
            S.mix(data,{"type":"flash"});
            swfUploader.upload(id, action, method, data,name);
            return self;
        },
        /**
         * 停止上传文件
         * @return {FlashType}
         */
        stop:function () {
            var self = this, swfUploader = self.get('swfUploader'),
                uploadingId = self.get('uploadingId');
            if(uploadingId != EMPTY){
                swfUploader.cancel(uploadingId);
                self.fire(FlashType.event.STOP, {id : uploadingId});
            }
            return self;
        },
        /**
         * 开始上传事件监听器
         * @param {Object} ev ev.file：文件数据
         */
        _uploadStartHandler : function(ev){
            var self = this;
            self.fire(FlashType.event.START, {'file' : ev.file });
        },
        /**
         * 上传中事件监听器
         * @param {Object} ev
         */
        _uploadProgressHandler:function (ev) {
            var self = this;
            S.mix(ev, {
                //已经读取的文件字节数
                loaded:ev.bytesLoaded,
                //文件总共字节数
                total : ev.bytesTotal
            });
            S.log(LOG_PREFIX + '已经上传字节数为：' + ev.bytesLoaded);
            self.fire(FlashType.event.PROGRESS, { 'loaded':ev.loaded, 'total':ev.total });
        },
        /**
         * 上传完成后事件监听器
         * @param {Object} ev
         */
        _uploadCompleteDataHandler : function(ev){
            var self = this;
            var result = self._processResponse(ev.data);
            self.set('uploadingId',EMPTY);
            self.fire(FlashType.event.SUCCESS, {result : result});
        },
        /**
         *文件上传失败后事件监听器
         */
        _uploadErrorHandler : function(ev){
            var self = this;
            self.set('uploadingId',EMPTY);
            self.fire(FlashType.event.ERROR, {msg : ev.msg});
        },
        /**
         * 应用是否有flash跨域策略文件
         */
        isHasCrossdomain:function(){
            var domain = location.hostname;
             S.io({
                 url:'http://' + domain + '/crossdomain.xml',
                 dataType:"xml",
                 error:function(){
                     S.log('缺少crossdomain.xml文件或该文件不合法！');
                 }
             })
        }
    }, {ATTRS:/** @lends FlashType*/{
        /**
         * 服务器端路径，留意flash必须是绝对路径
         */
        action:{
            value:EMPTY,
            getter: function (v) {
//mod by liuhuisheng for delete the path method
//                var reg = /^http/;
//                //不是绝对路径拼接成绝对路径
//                if(!reg.test(v)){
//                     var href = location.href,uris = href.split('/'),newUris;
//                    newUris  = S.filter(uris,function(item,i){
//                        return i < uris.length - 1;
//                    });
//                    v = newUris.join('/') + '/' + v;
//                }
                return v;
            }
        },
        /**
         * ajbridge的uploader组件的实例，必须参数
         */
        swfUploader:{value:EMPTY},
        /**
         * 正在上传的文件id
         */
        uploadingId : {value : EMPTY}
    }});
    //TODO:之所以污染KISSY，是因为ImageUploader和Uploader同时引用时存在bug
    S.FlashType = FlashType;
    return FlashType;
}, { requires: ['node', './base'] });