@page "/tables/detail"

<h3>显示明细行功能</h3>

<h4>用于展示父子关系表数据</h4>

<Block Title="简单应用" Introduction="通过设置 <code>DetailRowTemplate</code> 模板设置明细行内容">
    <p>明细行内显示绑定行的另外一个字段 <code>学历</code> 以普通文字形式呈现</p>
    <Table TItem="Foo"
           IsPagination="true" PageItemsSource="@PageItemsSource"
           IsStriped="true" IsBordered="true"
           ShowToolbar="true" ShowDefaultButtons="false"
           OnQueryAsync="@OnQueryAsync">
        <TableColumns>
            <TableColumn @bind-Field="@context.DateTime" Width="180" />
            <TableColumn @bind-Field="@context.Name" Width="100" />
            <TableColumn @bind-Field="@context.Address" />
            <TableColumn @bind-Field="@context.Count" />
        </TableColumns>
        <DetailRowTemplate>
            <div>学历: @typeof(EnumEducation).ToDescriptionString(context.Education.ToString())</div>
        </DetailRowTemplate>
    </Table>
</Block>

<Block Title="嵌套 Table 组件应用" Introduction="通过设置 <code>DetailRowTemplate</code> 模板设置明细行为子表数据">
    <p>明细行内嵌套另外一个 <code>Table</code> 组件，由于每行都要关联子表数据，出于性能的考虑，此功能采用 <code>懒加载</code> 模式，即点击展开按钮后，再对嵌套 <code>Table</code> 进行数据填充，通过 <code>ShowDetailRow</code> 回调委托可以控制每一行是否显示明细行，本例中通过 <code>Complete</code> 属性来控制是否显示明细行，可通过翻页来测试本功能</p>
    <Table TItem="Foo"
           IsPagination="true" PageItemsSource="@PageItemsSource"
           IsStriped="true" IsBordered="true"
           ShowToolbar="true" ShowDefaultButtons="false"
           OnQueryAsync="@OnQueryAsync" ShowDetailRow="ShowDetailRow">
        <TableColumns>
            <TableColumn @bind-Field="@context.DateTime" Width="180" />
            <TableColumn @bind-Field="@context.Name" Width="100" />
            <TableColumn @bind-Field="@context.Address" />
            <TableColumn @bind-Field="@context.Count" />
        </TableColumns>
        <DetailRowTemplate>
            @{
                // 此段代码为提高性能
                var cacheKey = context.Name ?? "";
                var DetailDataSource = Enumerable.Empty<DetailRow>();
                if (Cache.ContainsKey(cacheKey))
                {
                    DetailDataSource = Cache[cacheKey];
                }
                else
                {
                    DetailDataSource = GetDetailRowsByName(cacheKey).ToList();
                    Cache.Add(cacheKey, DetailDataSource);
                }
            }
            <Table TItem="DetailRow" IsBordered="true" ShowToolbar="false" Items="@DetailDataSource">
                <TableColumns Context="Detail">
                    <TableColumn @bind-Field="@Detail.Name" />
                    <TableColumn @bind-Field="@Detail.DateTime" Width="180" />
                    <TableColumn @bind-Field="@context.Complete" Width="70" ComponentType="@typeof(Switch)" />
                </TableColumns>
            </Table>
        </DetailRowTemplate>
    </Table>
</Block>

<Block Title="固定表头开启明细行功能" Introduction="通过设置 <code>Height</code> 固定表头后模板设置明细行内容">
    <p>本例中固定表头后，再开启明细行功能</p>
    <Table TItem="Foo" Height="200"
           IsStriped="true" IsBordered="true"
           ShowToolbar="true" ShowDefaultButtons="false"
           OnQueryAsync="@OnQueryAsync">
        <TableColumns>
            <TableColumn @bind-Field="@context.DateTime" Width="180" />
            <TableColumn @bind-Field="@context.Name" Width="100" />
            <TableColumn @bind-Field="@context.Address" />
            <TableColumn @bind-Field="@context.Count" />
        </TableColumns>
        <DetailRowTemplate>
            <div>学历: @typeof(EnumEducation).ToDescriptionString(context.Education.ToString())</div>
        </DetailRowTemplate>
    </Table>
</Block>

<Block Title="明细行中使用 Tab 组件" Introduction="通过设置 <code>DetailRowTemplate</code> 模板设置明细行内容">
    <p>本例中明细行内使用 <code>Tab</code> 组件再次将数据分割成两个 <code>TabItem</code> 内容，进行再次数据拆分演示</p>
    <Table TItem="Foo" IsPagination="true" PageItemsSource="@PageItemsSource"
           IsStriped="true" IsBordered="true"
           ShowToolbar="true" ShowDefaultButtons="false"
           OnQueryAsync="@OnQueryAsync">
        <TableColumns>
            <TableColumn @bind-Field="@context.DateTime" Width="180" />
            <TableColumn @bind-Field="@context.Name" Width="100" />
            <TableColumn @bind-Field="@context.Address" />
            <TableColumn @bind-Field="@context.Count" />
        </TableColumns>
        <DetailRowTemplate>
            <Tab>
                <TabItem Text="明细数据">
                    @{
                        // 此段代码为提高性能
                        var cacheKey = context.Name ?? "";
                        var DetailDataSource = Enumerable.Empty<DetailRow>();
                        if (Cache.ContainsKey(cacheKey))
                        {
                            DetailDataSource = Cache[cacheKey];
                        }
                        else
                        {
                            DetailDataSource = GetDetailRowsByName(cacheKey).ToList();
                            Cache.Add(cacheKey, DetailDataSource);
                        }
                    }
                    <Table TItem="DetailRow" IsBordered="true" ShowToolbar="false" Items="@DetailDataSource" AutoGenerateColumns="true" />
                </TabItem>
                <TabItem Text="关联数据">
                    <div>学历: @typeof(EnumEducation).ToDescriptionString(context.Education.ToString())</div>
                </TabItem>
            </Tab>
        </DetailRowTemplate>
    </Table>
</Block>

// Copyright (c) Argo Zhang (argo@163.com). All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
// Website: https://www.blazor.zone or https://argozhang.github.io/

using BootstrapBlazor.Components;
using BootstrapBlazor.Shared.Pages.Components;
using Microsoft.AspNetCore.Components;
using Microsoft.Extensions.Localization;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Threading.Tasks;

namespace BootstrapBlazor.Shared.Pages.Table
{
    /// <summary>
    /// 
    /// </summary>
    public sealed partial class TablesDetailRow
    {
        private Dictionary<string, IEnumerable<DetailRow>> Cache { get; } = new();

        private static readonly Random random = new();

        private static IEnumerable<int> PageItemsSource => new int[] { 4, 10, 20 };

        [NotNull]
        private List<Foo>? Items { get; set; }

        [Inject]
        [NotNull]
        private IStringLocalizer<Foo>? Localizer { get; set; }

        /// <summary>
        /// OnInitialized 方法
        /// </summary>
        protected override void OnInitialized()
        {
            base.OnInitialized();

            Items = Foo.GenerateFoo(Localizer);
        }

        private static IEnumerable<DetailRow> GetDetailRowsByName(string name) => Enumerable.Range(1, 4).Select(i => new DetailRow()
        {
            Id = i,
            Name = name,
            DateTime = DateTime.Now.AddDays(i - 1),
            Complete = random.Next(1, 100) > 50
        });

        private Task<QueryData<Foo>> OnQueryAsync(QueryPageOptions options)
        {
            IEnumerable<Foo> items = Items;

            // 设置记录总数
            var total = items.Count();

            // 内存分页
            items = items.Skip((options.PageIndex - 1) * options.PageItems).Take(options.PageItems).ToList();

            return Task.FromResult(new QueryData<Foo>()
            {
                Items = items,
                TotalCount = total
            });
        }

        private class DetailRow
        {
            /// <summary>
            /// 
            /// </summary>
            [DisplayName("主键")]
            public int Id { get; set; }

            /// <summary>
            /// 
            /// </summary>
            [DisplayName("培训课程")]
            [AutoGenerateColumn(Order = 10)]
            public string Name { get; set; } = "";

            /// <summary>
            /// 
            /// </summary>
            [DisplayName("日期")]
            [AutoGenerateColumn(Order = 20, Width = 180)]
            public DateTime DateTime { get; set; }

            /// <summary>
            /// 
            /// </summary>
            [DisplayName("是/否")]
            [AutoGenerateColumn(Order = 30, Width = 70, ComponentType = typeof(Switch))]
            public bool Complete { get; set; }
        }

        private static bool ShowDetailRow(Foo item) => item.Complete;
    }
}