'分页'

@@ -23,7 +23,7 @@ const handleFilterUrl = (originParam, newParam) => {
 
     tempOriginParam = Object.assign(tempOriginParam, originParam, newParam);
 
-    _.forEach(tempOriginParam, function(value, key) {
+    _.forEach(tempOriginParam, function (value, key) {
         dest = dest + key + '=' + value + '&';
     });
 
@@ -66,8 +66,8 @@ const handleSalebreakingYardsSortData = (origin, params) => {
 
                 // 判断是否在这组数据里面
                 if (!_.isEmpty(_.find(value.sort_id.split(','), o => {
-                    return o === sortParam;
-                }))) {
+                        return o === sortParam;
+                    }))) {
 
                     // 如果在某组数据里面，组合数据退出循环
                     _.forEach(value.sub, subValue => {
@@ -152,8 +152,8 @@ const handleBrandCheckedData = (params, origin) => {
     if (!_.isEmpty(origin)) {
         _.forEach(origin, (value) => {
             if (typeof _.find(intBrands, o => {
-                return _.isEqual(o, value.id);
-            }) !== 'undefined') {
+                    return _.isEqual(o, value.id);
+                }) !== 'undefined') {
 
                 let checked = {
                     name: value.name
@@ -543,7 +543,7 @@ exports.handleSaleFilterData = (origin, params) => {
     if (!_.isEmpty(origin.brand)) {
         let count = 0;
 
-        _.forEach(origin.brand, function(value) {
+        _.forEach(origin.brand, function (value) {
             let brand = {
                 checked: (typeof _.find(intBrands, o => {
                     return _.isEqual(o, value.id);
@@ -678,7 +678,7 @@ exports.handleBannerData = (origin) => {
     let dest = {};
 
     dest.list = [];
-    _.forEach(origin, function(value) {
+    _.forEach(origin, function (value) {
         if (value.template_name === 'focus') {
             _.forEach(value.data, subValue => {
 
@@ -736,6 +736,104 @@ exports.handlePathNavData = (data, params) => {
 };
 
 /**
+ * 分页
+ * @param  {[type]} total 总页数
+ * @param  {[type]} params 筛选条件
+ * @return {[type]}        [description]
+ */
+exports.handlePagerData = (total, params) => {
+    let dest = {
+        prePage: {
+            url: ''
+        },
+        nextPage: {
+            url: ''
+        },
+        pages: []
+    };
+
+    let currentPage = parseInt((_.isEmpty(params.page) ? 1 : params.page), 10); // 当前页
+    let perPageCount = parseInt((_.isEmpty(params.limit) ? 60 : params.limit), 10); // 每页商品数
+    let totalPage = parseInt(total / perPageCount, 10) + 1; // 总页数
+
+    if (currentPage === 1) {
+        // 当前页为 1，一定没有上一页
+        delete dest.prePage;
+    } else {
+        dest.prePage.url = handleFilterUrl(params, {page: currentPage - 1});
+    }
+
+    if (currentPage === totalPage) {
+
+        // 当前页为最后一页，一定没有下一页
+        delete dest.nextPage;
+    } else {
+        dest.nextPage.url = handleFilterUrl(params, {page: currentPage + 1});
+    }
+
+    // 页码临时数据
+    let pages = [];
+
+    if (currentPage > 2 && currentPage <= totalPage - 2) {
+        for (let i = currentPage - 2; i <= ((currentPage + 2) > totalPage ? totalPage : (currentPage + 2)); i++) {
+            pages.push({
+                url: handleFilterUrl(params, {page: i}),
+                num: i,
+                cur: currentPage === i
+            });
+        }
+
+        // 处理页码小于等于 2 的情况
+    } else if (currentPage <= 2) {
+        for (let i = 1; i <= (totalPage < 5 ? totalPage : 5); i++) {
+            pages.push({
+                url: handleFilterUrl(params, {page: i}),
+                num: i,
+                cur: currentPage === i
+            });
+        }
+    } else if (currentPage > totalPage - 2) {
+        for (let i = totalPage; i >= totalPage - 4; i--) {
+            pages.push({
+                url: handleFilterUrl(params, {page: i}),
+                num: i,
+                cur: currentPage === i
+            });
+        }
+        pages = _.sortBy(pages, ['num']);
+    }
+
+    let prevPages = [];
+    let nextPages = [];
+
+    if (_.size(pages) === 5) {
+        if (currentPage > 4) {
+            prevPages.push({
+                url: handleFilterUrl(params, {page: 1}),
+                num: 1
+            });
+            prevPages.push({
+                num: '...'
+            });
+        }
+        if (currentPage < totalPage - 2) {
+            nextPages.push({
+                num: '...'
+            });
+            nextPages.push({
+                url: handleFilterUrl(params, {page: totalPage}),
+                num: totalPage
+            });
+        }
+    }
+
+    dest.pages = _.concat(prevPages, pages, nextPages);
+
+    return dest;
+
+};
+
+/**
  * 筛选类链接处理的对外接口
  * @type {[type]}
  */