/**
 * 品牌店铺首页
 */

var $ = require('jquery'),
    IScroll = require('iscroll/iscroll-probe'),
    lazyLoad = require('yoho.lazyload'),
    Swiper = require('yoho.iswiper'),
    activeTab,
    myScroll,
    imgH,
    nav1H,
    main1H,
    main1oH,
    nav2H,
    main2oH,
    scH,
    $nav1 = $('#pos-nav'),
    $nav2 = $('#pos-list'),
    sTop,
    isIphone = navigator.userAgent.indexOf('iPhone') > 0 ? true : false;//判断浏览器类型

var tip = require('../plugin/tip'),
    filter = require('../plugin/filter'),
    loading = require('../plugin/loading');

var $subNav = $('.home-sub-nav'),
    $goodsContainer = $('#goods-container'),
    $goodsChildren = $goodsContainer.children(),
    $ngc = $($goodsChildren.get(0)),
    $pgc = $($goodsChildren.get(1)),
    $dgc = $($goodsChildren.get(2));

var winH = $(window).height(),
    noResult = '<p class="no-result">未找到相关搜索结果</p>';

//默认筛选条件
var defaultOpt = require('./query-param');

var $listNav = $('#list-nav'),
    $posList = $('#pos-list'),

    //导航数据信息
    navInfo = {
        new: {
            order: 1,
            reload: true,
            page: 0,
            end: false
        },
        hot: {
            order: 1,
            reload: true,
            page: 0,
            end: false
        },
        newest: {
            order: 1,
            reload: true,
            page: 0,
            end: false
        },
        price: {
            order: 1,
            reload: true,
            page: 0,
            end: false
        },
        discount: {
            order: 1,
            reload: true,
            page: 0,
            end: false
        }
    },
    $pre = $listNav.find('.active'), //纪录进入筛选前的active项，初始为选中项
    $lie = $posList.find('.active'),
    searching;

var viewType = 1; // 1-首页,2-上新,3-人气

//焦点效果
if ($('.banner-swiper').find('li').size() > 1) {
    bannerSwiper = new Swiper('.banner-swiper', {
        lazyLoading: true,
        lazyLoadingInPrevNext: true,
        loop: true,
        autoplay: 3000,
        autoplayDisableOnInteraction: false,
        paginationClickable: true,
        slideElement: 'li',
        pagination: '.banner-top .pagination-inner'
    });
}

if ($('.multi-browse').find('li').size() > 1) {
   multiSwiper = new Swiper('.multi-browse', {
        lazyLoading: true,
        lazyLoadingInPrevNext: true,
        lazyLoadingOnTransitionStart: true,
        grabCursor: true,
        slidesPerView: 'auto',
        slideElement: 'li',
        watchSlidesVisibility: true
    });
}

function tabChange(dom, index) {
    var li = dom.eq(index),
        sortSize = li.find('.iconfont').length;

    dom.removeClass('active');
    li.addClass('active');

    dom.removeClass('color');
    li.addClass('color');
}

//首页导航
$.jqtab = function(nav, posNav, main) {

    $(nav + ' li, ' + posNav + ' li').on('touchstart', function() {

        var index = $(this).index(),
            activeTab = $(this).attr('tab');

        $nav1.removeClass('fixed-top');
       
        tabChange($(nav + ' li'), index);
        tabChange($(posNav + ' li'), index);

        $(main).hide();
        $('#' + activeTab).fadeIn();

        if(activeTab == 'new-arrival'){
            newData();
        }else if(activeTab == 'popularity'){
            hotData();
        }

        return false;
    });
};
$.jqtab('#nav','#pos-nav','.main');
 
$('#wrapper').addClass('scroll-wrapper');
lazyLoad($('img.lazy'));


myScroll = new IScroll('#wrapper', {
    probeType: 3,
    mouseWheel: true,   
    click: true
});

function getPageGoods(info) {
    if (searching) {
        return;
    }
    searching = true;
    $.ajax({
        type: 'GET',
        url: info.url,
        data: info.data,
        success: function(data) {
            info.callBack(data);
            setTimeout(function () {
                myScroll.refresh();
                scH = $('#scroller').outerHeight();
            }, 1000);
            
            searching = false;
        },
        error: function() {
            alert('网络断开连接了~');
            searching = false;
        }
    });
}

function newData() {
    var req = {};

    req.url = '/index/search/search';
    req.data = {
        type: 'newest',
        order: '1',
        page: '1',
        shop_id: '102'

    };
    req.callBack = function(data) {
        $('#new-arrival').append(data);
        navInfo.new.page++;
    }
    getPageGoods(req);
}

function hotData() {
    var req = {};

    req.url = '/index/search/search';
    req.data = {
        type: 'sales',
        order: '1',
        page: '1',
        shop_id: '102'
    };
    req.callBack = function(data) {
        $('#popularity').append(data);
        navInfo.hot.page++;
    }
    getPageGoods(req);
}

myScroll.on('scroll', function() {
    var sTop = -this.y;

    if (sTop + winH * 2 > scH) {
        switch(viewType) {
            
            case 2:
                newData();
                break;
            case 3:
                hotData();
                break;
        }
    }
    
    if (sTop < imgH) {
        if (!$nav1.hasClass('hide')) {
            $nav1.addClass('hide');
        }
        if (!$nav2.hasClass('hide')) {
            $nav2.addClass('hide');
        }  //滑动距离不到导航1
    } else if (sTop < imgH + nav1H + main1oH) {
        if ($nav1.hasClass('hide')) {
            $nav1.removeClass('hide');
        }
        if (!$nav2.hasClass('hide')) {
            $nav2.addClass('hide');
        }//滑动距离不到导航2

        if (sTop < imgH + main1H) {
            if (!$nav1.hasClass('fixed-top')) {
                $nav1.addClass('fixed-top')
                    .removeClass('absolute')
                    .css({
                        transform: 'translate(0, ' + (- scH) + 'px)'
                    });
            }
        } else if (sTop < imgH + nav1H + main1H) {
            if (!$nav1.hasClass('absolute')) {
                $nav1.addClass('absolute')
                    .removeClass('fixed-top');
            }
            $nav1.css({
                    transform: 'translate(0, ' + (imgH + main1H - sTop  - scH) + 'px)'
                });
        }
    } else {
        if (!$nav1.hasClass('hide')) {
            $nav1.addClass('hide');
        }
        if ($nav2.hasClass('hide')) {
            $nav2.removeClass('hide');
        }

        if (sTop < scH) {
              if (!$nav2.hasClass('fixed-top')) {
                $nav2.addClass('fixed-top')
                    .removeClass('absolute')
                    .css({
                        transform: 'translate(0, ' + (- scH) + 'px)'
                    });
            }
        }
    }//

    $("#scroller").trigger('scroll');
});



document.addEventListener('touchmove', function(e) {
    e.preventDefault();
}, false);

if (!isIphone) {
    return;
}


//window onload 后重新refresh iscroll
$(window).load(function() {
    myScroll && myScroll.refresh();
    imgH = $('#nav-top').outerHeight();
    nav1H = $('#nav').outerHeight();
    main1H = $('#nav-main').height();
    main1oH = $('#nav-main').outerHeight();
    nav2H = $('#list-nav').outerHeight();
    main2oH = $('#goods-container').outerHeight();
    setTimeout(function(){
        scH = $('#scroller').outerHeight();
    },2000);
});


function search(opt) {
    var setting = {},
        ext,
        att,
        nav, navType,
        page;

    if (searching) {
        return;
    }

    if (opt) {

        //筛选项变更则重置reload为true
        for (att in navInfo) {
            if (navInfo.hasOwnProperty(att)) {
                navInfo[att].reload = true;
            }
        }

        switch (opt.type) {
            case 'shop_id': 
                ext = {
                    shop_id: opt.id
                };
                break;
            case 'gender':
                ext = {
                    gender: opt.id
                };
                break;
            case 'brand':
                ext = {
                    brand: opt.id
                };
                break;
            case 'sort':
                ext = {
                    sort: opt.id
                };
                break;
            case 'color':
                ext = {
                    color: opt.id
                };
                break;
            case 'size':
                ext = {
                    size: opt.id
                };
                break;
            case 'price':
                ext = {
                    price: opt.id
                };
                break;
            case 'discount':
                ext = {
                    discount: opt.id
                };
                break;
        }

        $.extend(defaultOpt, ext); //扩展筛选项
    }


    //导航类别
    if ($pre.hasClass('new')) {
        navType = 'newest';
    } else if ($pre.hasClass('price')) {
        navType = 'price';
    } else if ($pre.hasClass('discount')) {
        navType = 'discount';
    }

    nav = navInfo[navType];

    page = nav.page + 1;
    if (nav.reload) {
        page = 1;
    } else if (nav.end) {

        //不需要重新加载并且数据请求结束
        return;
    }

    $.extend(setting, defaultOpt, {
        type: navType,
        order: nav.order,
        page: page
    });

    searching = true;
    loading.showLoadingMask();

    $.ajax({
        type: 'GET',
        url: opt.url ? opt.url : '',
        data: setting,
        success: function(data) {
            var $container,
                num;

            switch (navType) {
                case 'newest':
                    $container = $ngc;
                    break;
                case 'price':
                    $container = $pgc;
                    break;
                case 'discount':
                    $container = $dgc;
                    break;
            }

            if (data === ' ') {
                nav.end = true;

                if (nav.reload) {
                    $container.html(noResult);
                }
            } else {
                if (nav.reload) {
                    $container.html(data);
                    lazyLoad($container.find('.lazy'));
                } else {
                    num = $container.find('.good-info').length;
                    $container.append(data);

                    //lazy good-infos who append in
                    lazyLoad($container.find('.good-info:gt(' + (num - 1) + ') .lazy'));
                }
            }

            nav.reload = false;
            nav.page = page;

            searching = false;
            loading.hideLoadingMask();

            window.rePosFooter();

            setTimeout(function () {
                myScroll.refresh();
                scH = $('#scroller').outerHeight();
            }, 1000);
        },           
        error: function() {
            tip.show('网络断开连接了~');
            searching = false;
            loading.hideLoadingMask();
        }
    });
}

$.ajax({
    type: 'GET',
    url: '/product/newsale/filter',
    data: defaultOpt,
    success: function(data) {
        $goodsContainer.append(data);

            setTimeout(function () {
                myScroll.refresh();
                scH = $('#scroller').outerHeight();
            }, 1000);
           
            

        //初始化filter&注册filter回调
        filter.initFilter({
            fCbFn: search,
            hCbFn: function() {

                //切换active状态到$pre上
                $pre.addClass('active');
                $pre.siblings('.filter').removeClass('active');
            },
            missStatus: true
        });
    }
});

$listNav.bind('contextmenu', function(e) {
    return false;
});

$posList.bind('contextmenu', function(e) {
    return false;
});

$subNav.on('touchend touchcancel', function(e) {
    var $this = $(e.target).closest('li'),
        cname,
        nav,
        navType,
        $active;

    e.preventDefault();

    if (typeof $this === 'undefined' || $this.length === 0) {
        return;
    }

    if ($this.hasClass('filter')) {

        //筛选面板切换状态
        if ($this.hasClass('active')) {
            filter.hideFilter();

            //点击筛选钱的active项回复active
            $pre.addClass('active');
            $this.removeClass('active');
        } else {
            $pre = $this.siblings('.active');

            $pre.removeClass('active');
            $this.addClass('active');

            filter.showFilter();
        }
    } else {
        if ($this.hasClass('new')) {
            cname = '.new';
            navType = 'newest';
        } else if ($this.hasClass('price')) {
            cname = '.price';
            navType = 'price';
        } else if ($this.hasClass('discount')) {
            cname = '.discount';
            navType = 'discount';
        }

        nav = navInfo[navType];

        if ($this.hasClass('active')) {

            //最新无排序切换
            if ($this.hasClass('new')) {
                return;
            }

            if ($this.hasClass('price') || $this.hasClass('discount')) {
                $this = $subNav.find(cname);

                // 价格/折扣切换排序状态
                $this.find('.icon > .iconfont').toggleClass('cur');
                $pre = $this; //更新pre为当前项
                nav.reload = true; //重置reload,HTML会被替换为逆序的HTML
                nav.order = nav.order === 0 ? 1 : 0; //切换排序
            }
        } else {
            $active = $subNav.find('.active');

            $pre = $this; //$pre为除筛选导航的其他导航项，若当前active的为筛选，则把$pre置为当前点击项

            if ($active.hasClass('filter')) {

                //若之前active项为筛选，则隐藏筛选面板
                filter.hideFilter();
            } else {

                //切换container显示
                $goodsContainer.children('.container:not(.hide)').addClass('hide');

                switch (navType) {
                    case 'newest':
                        $ngc.removeClass('hide');
                        break;

                    case 'price':
                        $pgc.removeClass('hide');
                        break;

                    case 'discount':
                        $dgc.removeClass('hide');
                        break;
                }
            }

            $subNav.children().removeClass('active');
            $subNav.find(cname).addClass('active');
        }

        if (nav.reload) {
            search({
                type: 'shop_id',
                id: '111',
                url: '/index/search/search'
            });
        }
    }
    e.stopPropagation();
});


function scrollHandler() {
   
    //当scroll到1/4$goodsContainer高度后继续请求下一页数据
    myScroll && myScroll.refresh();
    
    if (sTop + winH >  $('#scroller').height() - 0.25 * 

$goodsContainer.height() - 50){
        if ($pre !== undefined) {
            search({
                type: 'shop_id',
                id: '1111',
                url: '/index/search/search'
            });        
        }
    }
}

//srcoll to load more
$(window).scroll(function() {
    window.requestAnimationFrame(scrollHandler);
});

//初始请求最新第一页数据
search({
    type: 'shop_id',
    id: '1111',
    url: '/index/search/search'
    }
);

$listNav.on('touchstart', 'li', function(e) {
    $(this).addClass('bytouch');
}).on('touchend touchcancel', function() {
    $listNav.find('li').removeClass('bytouch');
});

$posList.on('touchstart', 'li', function(e) {
    $(this).addClass('bytouch');
}).on('touchend touchcancel', function() {
    $posList.find('li').removeClass('bytouch');
});



//底部导航点击
function fotterClick(group) {
  $(group + ' li').on('touchstart', function() {
         $('.sub-group').addClass('hide');
         if ($(this).find('.sub-group').length > 0){
              $(this).find('.sub-group').removeClass('hide');
          }
     });
};

fotterClick('.shop-foot-wrapper');

function stopPropagation(e) { 
    if (e.stopPropagation){ 
    e.stopPropagation(); 
    }else {
    e.cancelBubble = true; }
} 

$(document).bind('touchstart',function(){ 
    $('.sub-group').addClass('hide'); 
}); 

$('.shop-foot-wrapper').bind('touchstart',function(e){ 
    stopPropagation(e); 
});