/**
 * Created by YujieYang.
 * @name:  子表格扩展
 * @author: 杨玉杰
 */
layui.define(['table' ,'element', 'form', 'laytpl'], function (exports) {

    var $ = layui.jquery,
        table = layui.table,
        laytpl = layui.laytpl,
        tableChildren={},
        ELEM_HOVER='soul-table-hover';

    // 封装方法
    var mod = {
        /**
         * 渲染入口
         * @param myTable
         */
        render: function (myTable) {
            var _this = this,
                $table = $(myTable.elem),
                $tableBox = $table.next().children('.layui-table-box'),
                tableId = myTable.id,
                $tableHead = $tableBox.children('.layui-table-header').children('table'),
                $fixedBody = $tableBox.children('.layui-table-fixed').children('.layui-table-body').children('table'),
                $noFixedBody = $tableBox.children('.layui-table-body').children('table'),
                $tableBody = $.merge($tableBox.children('.layui-table-body').children('table'), $fixedBody),
                columns = _this.getCompleteCols(myTable.cols),
                childIndex = [],
                soulSort = typeof myTable.soulSort === 'undefined' || myTable.soulSort,
                i;

            // 修复hover样式
            _this.fixHoverStyle(myTable)
            // 获取子表配置信息
            for (i=0;i<columns.length;i++) {
                if (columns[i].children && columns[i].children.length>0) {
                    childIndex.push(i);
                }
            }
            if (typeof $table.attr('lay-filter') === 'undefined') {
                $table.attr('lay-filter', tableId);
            }
            // 绑定一下主表事件
            if ($table.parents('.childTr').length === 0) {
                if (typeof myTable.rowEvent === 'function') {
                    table.on('row('+$table.attr('lay-filter')+')', function (obj) {
                        var index = $(this).data('index');
                        obj.tr = $tableBody.children('tbody').children('tr[data-index="'+index+'"]');
                        myTable.rowEvent(obj);
                    })
                }
                if (typeof myTable.rowDoubleEvent === 'function') {
                    table.on('rowDouble('+$table.attr('lay-filter')+')', function (obj) {
                        var index = $(this).data('index');
                        obj.tr = $tableBody.children('tbody').children('tr[data-index="'+index+'"]');
                        myTable.rowDoubleEvent(obj);
                    })
                }
            }

            if (childIndex.length>0) {
                for ( i = 0; i < childIndex.length; i++) {
                    (function f() {
                        var child = columns[childIndex[i]]
                            ,curIndex = childIndex[i]
                            ,icon = child.icon || ['layui-icon layui-icon-right', 'layui-icon layui-icon-down'];

                        if (soulSort && !(myTable.url && myTable.page)) {
                            // 前台排序
                            table.on('sort(' + $table.attr('lay-filter') + ')', function () {
                                _this.render(myTable)
                            });
                        }

                        if (child.isChild && typeof child.isChild === 'function') {
                            $tableBody.find('tr').find('td[data-key$="'+child.key+'"]>div').each(function (index) {
                                if (child.isChild(layui.table.cache[tableId][index])) {
                                    if (child.field) {
                                        $(this).prepend('<i style="cursor: pointer" class="childTable '+icon[0]+'"></i>');
                                    } else {
                                        $(this).html('<i style="cursor: pointer" class="childTable '+icon[0]+'"></i>');
                                    }
                                }
                            })
                        } else {
                            if (child.field) {
                                $tableBody.find('tr').find('td[data-key$="'+child.key+'"]>div').prepend('<i style="cursor: pointer" class="childTable '+icon[0]+'"></i>');
                            } else {
                                $tableBody.find('tr').find('td[data-key$="'+child.key+'"]>div').html('<i style="cursor: pointer" class="childTable '+icon[0]+'"></i>');
                            }
                        }

                        $tableBody.children('tbody').children('tr').each(function () {
                            $(this).children('td:eq('+curIndex+')').find('.childTable').on('click', function () {
                                var rowIndex = $(this).parents('tr:eq(0)').data('index'),
                                    key = $(this).parents('td:eq(0)').data('key'),
                                    $this = $noFixedBody.children('tbody').children('tr[data-index=' + rowIndex + ']').children('td[data-key="'+key+'"]').find('.childTable:eq(0)'),
                                    $fixedThis = $fixedBody.find('tr[data-index=' + rowIndex + ']').children('td[data-key="'+key+'"]').find('.childTable:eq(0)'),
                                    data = table.cache[myTable.id][rowIndex],
                                    children = child.children;
                                if (typeof child.children === 'function') {
                                    children = child.children(data)
                                }
                                if (child.show === 2) { // 弹窗模式

                                    layer.open({type: 1, title: '子表', maxmin: true ,content: _this.getTables(this, data, child, myTable, children), area: '1000px', offset: '100px'});
                                    _this.renderTable(this, data, child, myTable, children, icon);

                                } else { // 展开模式

                                    // 开启手风琴模式
                                    if (!$this.hasClass(icon[1]) && child.collapse) {
                                        $tableBody.children('tbody').children('tr').children('td').find('.childTable').each(function () {
                                            if ($(this).hasClass(icon[1])) {
                                                _this.destroyChildren($(this).parents('tr:eq(0)').data('index'), myTable, icon)
                                            }
                                        })
                                    }

                                    // 多个入口时，关闭其他入口
                                    if (!$this.hasClass(icon[1])) {
                                        $this.parents('tr:eq(0)').children('td').find('.childTable').each(function () {
                                            if ($(this).hasClass(icon[1])) {
                                                $(this).removeClass(icon[1]).addClass(icon[0])
                                                _this.destroyChildren($(this).parents('tr:eq(0)').data('index'), myTable, icon)
                                            }
                                        })
                                    }

                                    if ($this.hasClass(icon[1])) {
                                        $this.removeClass(icon[1]).addClass(icon[0])
                                        $fixedThis.removeClass(icon[1]).addClass(icon[0])
                                    } else {
                                        $this.removeClass(icon[0]).addClass(icon[1])
                                        $fixedThis.removeClass(icon[0]).addClass(icon[1])
                                    }
                                    var rowspanIndex=$this.parents('td:eq(0)').attr("rowspan");

                                    if ($this.hasClass(icon[1])) {
                                        var newTr = [];
                                        newTr.push('<tr class="noHover childTr"><td colspan="'+$tableHead.find('th:visible').length+'"  style="cursor: inherit; padding: 0; width: '+$this.parents('tr:eq(0)').width()+'px">');
                                        newTr.push(_this.getTables(this, data, child, myTable, children));
                                        newTr.push('</td></tr>');

                                        if(rowspanIndex){
                                            var index=parseInt($this.parents('tr:eq(0)').data("index"))+parseInt(rowspanIndex)-1;
                                            $this.parents('table:eq(0)').children().children("[data-index='"+index+"']").after(newTr.join(''));
                                        }else{
                                            $this.parents('tr:eq(0)').after(newTr.join(''));
                                        }
                                        _this.renderTable(this, data, child, myTable, children, icon);
                                        if ($fixedBody.length>0) {
                                            var $tr = $this.parents('tr:eq(0)').next(),
                                                height = $tr.children('td').height(),
                                                $patchDiv = '<div class="soul-table-child-patch" style="height: '+height+'px"></div>';
                                            $tr.children('td').children('.layui-tab-card').css({
                                                position: 'absolute',
                                                top: 0,
                                                width: '100%',
                                                background: 'white',
                                                'z-index': 200
                                            })
                                            $tr.children('td').append($patchDiv);
                                            $fixedBody.find('tr[data-index="'+rowIndex+'"]').each(function () {
                                                $(this).after('<tr><td style="padding: 0;" colspan="'+$(this).children('[data-key]').length+'">'+$patchDiv+'</td></tr>')
                                            })
                                            table.resize(tableId)
                                        }
                                        if (child.show === 3) {
                                            $this.parents('tr:eq(0)').next().find('.layui-table-view').css({margin:0, 'border-width':0});
                                            $this.parents('tr:eq(0)').next().find('.layui-table-header').css('display', 'none');
                                        }
                                        // 阻止事件冒泡
                                        $this.parents('tr:eq(0)').next().children('td').children('.layui-tab').children('.layui-tab-content').on('click', function (e) {
                                            e.stopPropagation()
                                        }).off('dblclick').on('dblclick', function (e) {
                                            e.stopPropagation()
                                        }).on('mouseenter', 'td', function (e) {
                                            e.stopPropagation()
                                        })
                                    } else {
                                        _this.destroyChildren(rowIndex, myTable, icon);
                                        table.resize(tableId)
                                    }

                                }
                            })

                        })

                        if (child.spread && child.show !== 2) {
                            $tableBody.children('tbody').children('tr').children('td').find('.childTable').trigger('click');
                        }
                    })()

                }
            }
        },
        /**
         * 生成子表内容
         * @param _this
         * @param data
         * @param child
         * @param myTable
         * @param children 子表配置
         * @returns {string}
         */
        getTables: function (_this, data, child, myTable, children) {
            var tables = [],
                $table = $(myTable.elem),
                tableId = myTable.id,
                rowTableId = tableId + $(_this).parents('tr:eq(0)').data('index'),
                $tableMain = $table.next().children('.layui-table-box').children('.layui-table-body'),
                $tableBody = $tableMain.children('table'),
                scrollWidth = 0,
                i;
            tables.push('<div class="layui-tab layui-tab-card" lay-filter="table-child-'+rowTableId+'" style="margin: 0;border: 0;box-shadow: none;');
            if (child.show === 2) {
                tables.push('max-width: '+ ($tableBody.width()-2) +'px">')
            } else if (child.show === 3) {
                //不限制宽度
                tables.push('">')
            } else {
                if ($tableMain.prop('scrollHeight') + (children.length>0?children[0].height:0) > $tableMain.height()) {
                    scrollWidth = this.getScrollWidth();
                }
                tables.push('max-width: '+ ($tableMain.width() - 1 - scrollWidth) +'px">')
            }
            if (child.show !== 3 && (typeof child.childTitle === 'undefined' || child.childTitle)) {
                tables.push('<ul class="layui-tab-title">')
                for (i=0;i<children.length;i++) {
                    tables.push('<li class="'+(i===0?'layui-this':'')+'">'+(typeof children[i].title === 'function' ? children[i].title(data) :children[i].title)+'</li>');
                }
                tables.push('</ul>')
            }
            if (child.show === 3) {
                tables.push('<div class="layui-tab-content" style="padding: 0">');
            } else {
                tables.push('<div class="layui-tab-content" style="padding: 0 10px">');
            }
            for (i=0;i<children.length;i++) {
                var childTableId = rowTableId + i;
                tables.push('<div class="layui-tab-item layui-show"><form action="" class="layui-form" ><table id="'+childTableId+'" lay-filter="'+childTableId+'"></table></form></div>');
            }
            tables.push('</div></div>');
            return tables.join('')
        },
        /**
         * 渲染子表
         * @param _this
         * @param data 父表当前行数据
         * @param child 子表列
         * @param myTable 父表配置
         * @param children 子表配置
         */
        renderTable: function (_this, data, child, myTable, children, icon) {
            var tables = []
                ,_that = this
                ,tableId = myTable.id
                ,rowTableId = tableId + $(_this).parents('tr:eq(0)').data('index');

            if (child.lazy) {
                tables.push(renderChildTable(_that, _this, data, child, myTable, 0, children, icon));
            } else {
                for (var i=0; i<children.length; i++) {
                    tables.push(renderChildTable(_that, _this, data, child, myTable, i, children, icon));
                }
            }
            tableChildren[rowTableId]=tables;


            layui.element.on('tab(table-child-'+rowTableId+')', function(tabData){
                if (child.lazy) {
                    var isRender = false; // 是否已经渲染
                    for(i=0; i<tableChildren[rowTableId].length; i++) {
                        if (tableChildren[rowTableId][i].config.id === (rowTableId + tabData.index)) {
                            isRender = true;
                            break;
                        }
                    }
                    if (!isRender) {
                        tableChildren[rowTableId].push(renderChildTable(_that, _this, data, child, myTable, tabData.index, children))
                    }
                }

                var rowIndex = $(_this).parents('tr:eq(0)').data('index'),
                    height = $(tabData.elem).height();

                $(_this).parents('.layui-table-box:eq(0)').children('.layui-table-body').children('table').children('tbody').children('tr[data-index=' + rowIndex + ']').next().children().children('.soul-table-child-patch').css('height', height)
                $(_this).parents('.layui-table-box:eq(0)').children('.layui-table-fixed').children('.layui-table-body').children('table').children('tbody').children('tr[data-index=' + rowIndex + ']').next().children().children('.soul-table-child-patch').css('height', height)
                table.resize(tableId)

            });




            function renderChildTable(_that, _this, data, child, myTable, i, children, icon) {
                var param = _that.deepClone(children[i]), thisTableChild,
                    tableId = myTable.id,
                    rowIndex = $(_this).parents('tr:eq(0)').data('index'),
                    childTableId = tableId + rowIndex + i,
                    $table = $(myTable.elem),
                    $tableBox = $table.next().children('.layui-table-box'),
                    $tableBody = $.merge($tableBox.children('.layui-table-body').children('table'), $tableBox.children('.layui-table-fixed').children('.layui-table-body').children('table')),
                    tr = $tableBody.children('tbody').children('tr[data-index="'+rowIndex+'"]'),
                    row = table.cache[tableId][rowIndex],
                    // 父表当前行对象
                    pobj = {
                        data: row,
                        tr: tr,
                        del: function() {
                            table.cache[tableId][rowIndex] = [];
                            _that.destroyChildren(rowIndex, myTable, icon)
                            tr.remove();
                            table.resize(tableId);
                        },
                        update: function(fields) {
                            fields = fields || {};
                            layui.each(fields, function(key, value){
                                if(key in row){
                                    var templet, td = tr.children('td[data-field="'+ key +'"]');
                                    row[key] = value;
                                    table.eachCols(tableId, function(i, item2){
                                        if(item2.field == key && item2.templet){
                                            templet = item2.templet;
                                        }
                                    });
                                    td.children('.layui-table-cell').html(function(){
                                        return templet ? function(){
                                            return typeof templet === 'function'
                                                ? templet(row)
                                                : laytpl($(templet).html() || value).render(row)
                                        }() : value;
                                    }());
                                    td.data('content', value);
                                }
                            });
                        },
                        close: function () {
                            _that.destroyChildren(rowIndex, myTable, icon)
                            table.resize(tableId);
                        }

                    };
                param.id = childTableId;
                param.elem = '#'+childTableId;
                typeof param.where === 'function' && (param.where = param.where(data));
                typeof param.data === 'function' && (param.data = param.data(data));
                typeof param.url === 'function' && (param.url = param.url(data));
                thisTableChild = table.render(param);
                if (!child.lazy && i!==0) {
                    $('#'+childTableId).parents('.layui-tab-item:eq(0)').removeClass('layui-show'); //解决隐藏时计算表格高度有问题
                }
                // 绑定 checkbox 事件
                if (typeof param.checkboxEvent === 'function') {
                    table.on('checkbox('+childTableId+')', function (obj) {
                        param.checkboxEvent(obj, pobj)
                    })
                }
                // 绑定 edit 事件
                if (typeof param.editEvent === 'function') {
                    table.on('edit('+childTableId+')', function (obj) {
                        param.editEvent(obj, pobj)
                    })
                }
                // 绑定 tool 事件
                if (typeof param.toolEvent === 'function') {
                    table.on('tool('+childTableId+')', function (obj) {
                        param.toolEvent(obj, pobj)
                    })
                }
                // 绑定 toolbar 事件
                if (typeof param.toolbarEvent === 'function') {
                    table.on('toolbar('+childTableId+')', function (obj) {
                        param.toolbarEvent(obj, pobj)
                    })
                }
                // 绑定单击行事件
                if (typeof param.rowEvent === 'function') {
                    table.on('row('+childTableId+')', function (obj) {
                        param.rowEvent(obj, pobj)
                    })
                }
                // 绑定双击行事件
                if (typeof param.rowDoubleEvent === 'function') {
                    table.on('rowDouble('+childTableId+')', function (obj) {
                        param.rowDoubleEvent(obj, pobj)
                    })
                }
                return thisTableChild;
            }
        },
        destroyChildren: function (rowIndex, myTable, icon) {
            var tableId = myTable.id,
                $table = $(myTable.elem),
                $tableBox = $table.next().children('.layui-table-box'),
                $fixedBody = $tableBox.children('.layui-table-fixed').children('.layui-table-body').children('table'),
                $tableBody = $.merge($tableBox.children('.layui-table-body').children('table'), $fixedBody),
                $tr = $tableBody.children('tbody').children('tr[data-index="'+rowIndex+'"]');

            $tr.find('.childTable').removeClass(icon[1]).addClass(icon[0]);

            // 暂时不处理 rowspan 情况
            // var rowspanIndex = $this.parents('td:eq(0)').attr("rowspan");
            // if(rowspanIndex){
            //     var index=$this.parents('tr:eq(0)').index()+parseInt(rowspanIndex);
            //     $this.parents('table:eq(0)').children().children('tr:eq('+index+')').remove()
            // }else{
            //     $this.parents('tr:eq(0)').next().remove();
            // }
            $tr.next().remove()
            var tables = tableChildren[tableId + rowIndex];
            if (layui.tableFilter) { //如果使用了筛选功能，怎同时清理筛选渲染的数据
                layui.tableFilter.destroy(tables);
            }
            delete tableChildren[tableId + rowIndex]
        },
        cloneJSON: function (obj) {
            var JSON_SERIALIZE_FIX = {
                PREFIX : "[[JSON_FUN_PREFIX_",
                SUFFIX : "_JSON_FUN_SUFFIX]]"
            };
            var sobj = JSON.stringify(obj,function(key, value){
                if(typeof value === 'function'){
                    return JSON_SERIALIZE_FIX.PREFIX+value.toString()+JSON_SERIALIZE_FIX.SUFFIX;
                }
                return value;
            });
            return JSON.parse(sobj,function(key, value){
                if(typeof value === 'string' &&
                    value.indexOf(JSON_SERIALIZE_FIX.SUFFIX)>0 && value.indexOf(JSON_SERIALIZE_FIX.PREFIX)===0){
                    return eval("("+value.replace(JSON_SERIALIZE_FIX.PREFIX,"").replace(JSON_SERIALIZE_FIX.SUFFIX,"")+")");
                }
                return value;
            })||{};
        },
        fixHoverStyle: function(myTable) {
            var $table = $(myTable.elem)
                ,$tableBody = $table.next().children('.layui-table-box').children('.layui-table-body').children('table')
                ,$tableFixed = $table.next().children('.layui-table-box').children('.layui-table-fixed').children('.layui-table-body').children('table')
                ,style = $table.next().find('style')[0],
                sheet = style.sheet || style.styleSheet || {};
            // 屏蔽掉layui原生 hover 样式
            this.addCSSRule(sheet, '.layui-table-hover', 'background-color: inherit');
            this.addCSSRule(sheet, '.layui-table-hover.soul-table-hover', 'background-color: #F2F2F2');
            $.merge($tableFixed.children('tbody').children('tr'), $tableBody.children('tbody').children('tr'))
                .on('mouseenter', function () {
                    var othis = $(this)
                        ,index = $(this).data('index');
                    if(othis.data('off')) return;
                    $tableFixed.children('tbody').children('tr[data-index='+index+']').addClass(ELEM_HOVER);
                    $tableBody.children('tbody').children('tr[data-index='+index+']').addClass(ELEM_HOVER);
                }).on('mouseleave', function () {
                var othis = $(this)
                    ,index = $(this).data('index');
                if(othis.data('off')) return;
                $tableFixed.children('tbody').children('tr[data-index='+index+']').removeClass(ELEM_HOVER);
                $tableBody.children('tbody').children('tr[data-index='+index+']').removeClass(ELEM_HOVER);
            })
        },
        addCSSRule: function(sheet, selector, rules, index) {
            if ('insertRule' in sheet) {
                sheet.insertRule(selector + '{' + rules + '}', index)
            } else if ('addRule' in sheet) {
                sheet.addRule(selector, rules, index)
            }
        },
        // 深度克隆-不丢失方法
        deepClone: function (obj) {
            var newObj = Array.isArray(obj) ? [] : {}
            if (obj && typeof obj === "object") {
                for (var key in obj) {
                    if (obj.hasOwnProperty(key)) {
                        newObj[key] = (obj && typeof obj[key] === 'object') ? this.deepClone(obj[key]) : obj[key];
                    }
                }
            }
            return newObj
        },
        getCompleteCols: function (origin) {
            var cols = this.deepClone(origin);
            var i,j,k, cloneCol;
            for (i = 0; i < cols.length; i++) {
                for (j = 0; j < cols[i].length; j++) {
                    if (!cols[i][j].exportHandled) {
                        if (cols[i][j].rowspan > 1) {
                            cloneCol = this.deepClone(cols[i][j])
                            cloneCol.exportHandled = true;
                            k = i+1;
                            while (k < cols.length) {
                                cols[k].splice(j, 0, cloneCol)
                                k++
                            }
                        }
                        if (cols[i][j].colspan > 1) {
                            cloneCol = this.deepClone(cols[i][j])
                            cloneCol.exportHandled = true;
                            for (k = 1; k < cols[i][j].colspan; k++) {
                                cols[i].splice(j, 0, cloneCol)
                            }
                            j = j + cols[i][j].colspan - 1
                        }
                    }
                }
            }
            return cols[cols.length-1];
        },
        getScrollWidth: function (elem) {
            var width = 0;
            if(elem){
                width = elem.offsetWidth - elem.clientWidth;
            } else {
                elem = document.createElement('div');
                elem.style.width = '100px';
                elem.style.height = '100px';
                elem.style.overflowY = 'scroll';

                document.body.appendChild(elem);
                width = elem.offsetWidth - elem.clientWidth;
                document.body.removeChild(elem);
            }
            return width;
        }
    };

    // 输出
    exports('tableChild', mod);
});

