@namespace AntDesign
@inherits AntDomComponentBase
@using AntDesign.TableModels
@typeparam TItem

<div class="ant-table-wrapper">
    <Spin Spinning="Loading">
        @if (!HidePagination && PaginationPosition.Contains("top"))
        {
            <Pagination Class="@_paginationClass"
                        Total="Total"
                        PageSize="PageSize"
                        PageIndex="PageIndex"
                        OnPageIndexChange="HandlePageIndexChange"
                        OnPageSizeChange="HandlePageSizeChange" />
        }
        <CascadingValue Value="@this" TValue="ITable">
            <div class="@ClassMapper.Class">
                @if (TitleTemplate != null || Title != null)
                {
                    <div class="ant-table-title">
                        @if (TitleTemplate != null)@TitleTemplate else @Title
                    </div>
                }
                <div class="ant-table-container">
                    @if (ScrollY != null)
                    {
                        <div class="ant-table-header" style="overflow: hidden;">
                            <table style="table-layout: fixed;">
                                @colGroup(this)
                                @header(this)
                            </table>
                        </div>
                        <div class="ant-table-body" style="overflow-y: scroll; max-height: @ScrollY;">
                            <table style="table-layout: fixed;">
                                @colGroup(this)
                                <tbody class="ant-table-tbody">
                                    <tr aria-hidden="true" class="ant-table-measure-row" style="height: 0px;">
                                        @for (var i = 0; i < ColumnContext.Columns.Count; i++)
                                        {
                                            <td style="padding: 0px; border: 0px; height: 0px;"></td>
                                        }
                                    </tr>
                                    @body((this, _showItems, 0))
                                </tbody>
                            </table>
                        </div>
                    }
                    else
                    {
                        <div class="ant-table-content">
                            <table style="table-layout: auto;">
                                @colGroup(this)
                                @header(this)
                                <tbody class="ant-table-tbody">
                                    @body((this, _showItems, 0))
                                </tbody>
                            </table>
                        </div>
                    }
                </div>
                @if (FooterTemplate != null || Footer != null)
                {
                    <div class="ant-table-footer">
                        @if (FooterTemplate != null)@FooterTemplate else @Footer
                    </div>
                }
            </div>
        </CascadingValue>
        @if (!HidePagination && PaginationPosition.Contains("bottom"))
        {
            <Pagination Class="@_paginationClass"
                        Total="Total"
                        PageSize="PageSize"
                        PageIndex="PageIndex"
                        OnPageIndexChange="HandlePageIndexChange"
                        OnPageSizeChange="HandlePageSizeChange" />
        }
    </Spin>
</div>

@code
{
    RenderFragment<Table<TItem>> header = table =>
    @<Template>
        <thead class="ant-table-thead">
            <tr>
                <CascadingValue Name="IsHeader" Value="true">
                    @if (table.ExpandTemplate != null)
                    {
                        <th class="ant-table-cell ant-table-row-expand-icon-cell"></th>
                    }
                    <CascadingValue Value="@table.ColumnContext">
                        @if (_fieldModel != null)
                        {
                            @table.ChildContent(_fieldModel)
                        }
                    </CascadingValue>
                </CascadingValue>
                @if (table.ScrollY != null)
                {
                    <th class="ant-table-cell ant-table-cell-scrollbar"></th>
                }
            </tr>
        </thead>
    </Template>;

RenderFragment<Table<TItem>> colGroup = table =>
@<Template>
    <CascadingValue Name="IsColGroup" Value="true">
        <colgroup>
            @if (table.ExpandTemplate != null)
            {
                <col class="ant-table-expand-icon-col">
            }
            @if (_fieldModel != null)
            {
                @table.ChildContent(_fieldModel)
            }
            @if (table.ScrollY != null)
            {
                <col style="width: @(table.ScrollBarWidth)px; min-width: @(table.ScrollBarWidth)px;" />
            }
        </colgroup>
    </CascadingValue>
</Template>;

RenderFragment<(Table<TItem> table, IEnumerable<TItem> showItems, int level)> body = context =>
@<Template>
    @{
        var table = context.table;
        var showItems = context.showItems;
        var level = context.level;
    }

    @if (table.Total <= 0)
    {
        <tr class="ant-table-placeholder">
            <td colspan="@table.ColumnContext.Columns.Count" class="ant-table-cell">
                <Empty Simple />
            </td>
        </tr>
    }
    else if (showItems != null && table.ColumnContext.Columns.Count > 0)
    {
        for (int i = 0; i < showItems.Count(); i++)
        {
            var rowIndex = table.PageSize * (table.PageIndex - 1) + i + 1;
            var data = showItems.ElementAt(i);
            var cacheKey = data.GetHashCode();
            if (!table._dataSourceCache.ContainsKey(cacheKey))
            {
                table._dataSourceCache[cacheKey] = new RowData<TItem>(rowIndex, table.PageIndex, data);
            }
            var currentRowData = table._dataSourceCache[cacheKey] ?? new RowData<TItem>(rowIndex, table.PageIndex, data);
            var hasChildren = table.TreeChildren(data)?.Any() == true;
            currentRowData.CacheKey = cacheKey;
            currentRowData.Level = level;
            currentRowData.HasChildren = hasChildren;
            <CascadingValue Value="table.ColumnContext">
                <CascadingValue Value="currentRowData" Name="RowData">
                    <tr @attributes="@(new Dictionary<string,object> { {"onclick", _callbackFactory.Create(table, () => table.RowClick(currentRowData)) } })"
                        data-row-id="@rowIndex" class="ant-table-row ant-table-row-level-@level @(currentRowData.Selected ? "ant-table-row-selected" : "")">
                        @if (table.ExpandTemplate != null)
                        {
                            <td class="ant-table-cell ant-table-row-expand-icon-cell">
                                @if (table.RowExpandable(currentRowData))
                                {
                                    <button type="button" @attributes="@(new Dictionary<string,object>() { {"onclick",_callbackFactory.Create(table,() => ToggleExpandRow(currentRowData)) } })"
                                            class="ant-table-row-expand-icon @(currentRowData.Expanded?"ant-table-row-expand-icon-expanded":"ant-table-row-expand-icon-collapsed")" aria-label=""></button>
                                }
                            </td>
                        }
                        @table.ChildContent(data)
                    </tr>
                </CascadingValue>
            </CascadingValue>
            @if (hasChildren && currentRowData.Expanded)
            {
                @table.body((table, table.TreeChildren(data), level + 1));
            }
            @if (table.ExpandTemplate != null && table.RowExpandable(currentRowData))
            {
                <tr class="ant-table-expanded-row ant-table-expanded-row-level-1" style="@(currentRowData.Expanded?"":"display: none;")">
                    <td colspan="@(table.ColumnContext.Columns.Count+1)" class="ant-table-cell">
                        @table.ExpandTemplate(currentRowData)
                    </td>
                </tr>
            }
        }
    }
</Template>;
}