(function luckDrawCode(w){
    var luckDrawCode = {
        parentElm:null, //父级盒子
        goodsListElm:null,
        _data:{},
        data:{
            lielmPx:[
                {x:0,y:0}
            ],
            index:0, //下标
            isRun:false, //是否运行
            runTimePx:600, //运行间隔
            timer:null, //定时器对象
            timeDoOncer:null,
            timePx:100, // 时间增减值
            turnsNum:0, // 圈数
            lastIndex:null, //落点KEY
            lastTurnsNum: 3, //最后圈数
            istwinkle: true, //是否闪烁
            istwinkleNum:0, // 闪烁次数
            istwinkleMax:5
        },
        // 参数初始化
        pmsInit:function(fn){
            var px = 16,goodselmW=186,goodselmH=124,_x = 0,_y = 0,
             _node = 3, //节点
             _nodePlusNum = 2, //节点关系
             _status = 1; // 1右 2 下 3左 4上
            for(var i=0;i<8;i++){
                var _index = i + 1; // 商品编号 1 开始
                if (_index >= 8){ break; }
                if (_index%_node === 0 && _index <= (_node + _nodePlusNum)){ // 节点
                    _status ++;
                    _node += _nodePlusNum;
                }
                switch(_status){
                    case 1:
                        _x += (goodselmW+px);
                        break;
                    case 2:
                        _y += (goodselmH+px);
                        break;
                    case 3:
                        _x -= (goodselmW+px);
                        break;
                    case 4:
                        _y -= (goodselmH+px);
                        break;
                }
                this.data.lielmPx[_index] = {x:_x,y:_y};
            }
            typeof fn && fn();
            console.log(this.data.lielmPx);
        },
        init:function(_this){
            // 初始化赋值
            // jQuery.extend(this._data, this.data);
            luckDrawCode.parentElm = _this;
            luckDrawCode.goodsListElm = _this.children('ul');
            this.pmsInit(function(){
                _this.children('ul').children('li').each(function(i, n){
                    $(this).css({
                        left:luckDrawCode.parentElm.width() / 2 - $(this).width() / 2,
                        top:luckDrawCode.parentElm.height() / 2 - $(this).height() / 2,
                        opacity: 0
                    });
                })
                luckDrawCode.firstAnm(); //初始化动画
            });
        },
        // el 当前按钮DOM对象
        run:function(el){
            if (!luckDrawCode.data.isRun){
                return false;
            }
            // 初始化
            this.data.timer = setTimeout(function(){
                doSomeThing();
                console.log(luckDrawCode.data.index);
            },this.data.runTimePx);

            function doSomeThing(){
                // 参数设置
                luckDrawCode.data.index ++;
                luckDrawCode.data.parentElm = el
                // 中奖啦
                luckDrawCode.checkIndex(function(goodsIndex){
                    // 中奖操作
                    luckDrawCode.popGoods(goodsIndex);
                    // luckDrawCode.reset();
                });
                // DOM改变
                luckDrawCode.changeUi();
                // 
                luckDrawCode.changeTimePx(); // 递减

                // 下次执行
                luckDrawCode.run(el);
            }
        },
        // 节流
        timeDoOnce:function(fn, time){
            clearTimeout(this.timeDoOncer);
            var _time = typeof time === 'number' ? time : 1000;
            this.timeDoOncer = setTimeout(function(){
                typeof fn === 'function' && fn();
            }, _time);
        },
        // 参数重置
        reset:function(){
            this.data.index = 0;
            this.data.turnsNum = 0;
            this.data.lastIndex = null;
            this.changeUi();
            console.log('reset', this.data)
        },
        // 点击动画
        clickAnm:function(){
            this.parentElm.children('#btnDraw').addClass('anmPulse');
            this.timeDoOnce(function(){
                luckDrawCode.parentElm.children('#btnDraw').removeClass('anmPulse');
            });
        },
        // 初始化动画
        firstAnm:function(){
            var _time = 800 / 8
            this.goodsListElm.children('li').each(function(i, n){
                var _thisElm = $(this);
                setTimeout(function(){
                    _thisElm.css({
                        left:luckDrawCode.data.lielmPx[i].x,
                        top:luckDrawCode.data.lielmPx[i].y,
                        opacity: 1
                    });
                },_time);
                _time += 800 / 8;
            });
            setTimeout(function(){
                luckDrawCode.twinkleAnm(300);
            }, 900);
        },
        // 闪烁效果
        twinkleAnm:function(twinkleTime){
            console.log('开启闪烁');
            var _this = this;
            if (!_this.data.istwinkle || _this.data.istwinkleNum >= _this.data.istwinkleMax){
                _this.goodsListElm.children('li').removeClass('active');
                return false;
            }
            setTimeout(function(){
                if (_this.goodsListElm.children('li').eq(0).hasClass('active')){
                    _this.goodsListElm.children('li').removeClass('active');
                }else {
                    _this.goodsListElm.children('li').addClass('active');
                }
                _this.data.istwinkleNum ++;
                _this.twinkleAnm(twinkleTime);
            },twinkleTime);
        },
        endAnm:function(){

        },
        popGoods:function(goodsIndex){
            alert('中奖啦'+goodsIndex);
        },
        // 检测INDEX
        checkIndex:function(fn){
            if (this.data.index >= 8){
                this.data.index = 0; // 重置index
                this.data.turnsNum ++; // 累加圈数
                console.log('圈数',this.data.turnsNum, this.data.lastIndex, this.data.index >= this.data.lastIndex)
            }
            // 临界点判断 
            if (this.data.turnsNum >= this.data.lastTurnsNum && this.data.lastIndex !== null && this.data.index >= this.data.lastIndex){
                this.data.isRun = false;
                typeof fn === 'function' && fn(this.data.index);
            }

        },
        // 改变时间点
        changeTimePx:function(){
            // 满足圈数
            if (this.data.turnsNum >= this.data.lastTurnsNum){
                this.data.runTimePx += this.data.timePx;
                if (this.data.runTimePx >= 1000){
                    this.data.runTimePx = 1000;
                }
            } else {
                this.data.runTimePx -= this.data.timePx;
                if (this.data.runTimePx <= 100){
                    this.data.runTimePx = 100;
                }
            }
        },
        // 改变UI
        changeUi:function(){
            this.goodsListElm.children('li').eq(this.data.index).addClass('active').siblings('li').removeClass('active');
        },
        //获得最后落点INDEX
        getLastIndex:function(){
            this.data.lastIndex = Math.floor(Math.random() * 8);
            console.log('结束点', this.data.lastIndex)
            return  
            rturn
            $.ajax({
                type: "POST",
                url: "some.php",
                data: "name=John&location=Boston",
                success: function(msg){
                    alert( "Data Saved: " + msg );
                }
            });
        }
    };
    jQuery.fn.extend({
        luckDraw:function(){
            luckDrawCode.init(this);
            this.children('#btnDraw').on('click',function(e){
                // console.log(this, luckDrawCode)
                if(luckDrawCode.data.isRun){
                    return false;
                }
                luckDrawCode.data.istwinkle = false;
                luckDrawCode.clickAnm();
                luckDrawCode.reset();
                luckDrawCode.data.isRun = true;
                luckDrawCode.getLastIndex();
                luckDrawCode.run(this);
            });
        }
    });
    return luckDrawCode;
})(window,jQuery);
$("#drawBox").luckDraw();