SharpRSS/WebSharpRSS/Shared/SideGuide.razor

@using SharpRss.Models;
@using MudBlazor.Utilities
@using CodeHollow.FeedReader
@using Serilog
@using SharpRss.Services
@using WebSharpRSS.Models;
@using ToolQit.Extensions;

@inject NavigationManager _navManager;
@inject FeedStateContainer _stateContainer;
@inject RssService _rssService

<MudStack Spacing="2">
    <MudTreeView Items="_guideItems" @bind-SelectedValue="SelectedItem" Hover="true">
        <ItemTemplate>
            <MudTreeViewItem @bind-Expanded="@context.IsExpanded" Items="@context.Feeds" Value="@context" CanExpand="@context.HasChild" @onclick="ItemClicked">
                <Content>
                    <div style="display: grid; grid-template-columns: 1fr auto; align-items: center; width: 100%">
                        <div style="justify-self: start;" class="d-flex align-center">
                            <MudTreeViewItemToggleButton @bind-Expanded="@context.IsExpanded" Visible="@context.HasChild" LoadingIconColor="Color.Info"/>
                            @if (context.FaviconUrl.IsNullEmptyWhiteSpace() && context.Icon != null)
                            {
                                <MudIcon Icon="@context.Icon" Style="@($"color:{context.CategoryModel?.HexColor ?? Theme.Palette.Primary.Value}")"/>
                            }
                            else
                            {
                                <MudImage Src="@context.FaviconUrl" ObjectFit="ObjectFit.ScaleDown"/>
                            }
                            <MudText Class="ml-2">@context.Title</MudText>
                        </div>
                        <div style="justify-self: end;">
                            <MudText Color="Color.Dark" Style="justify-self: end;" Typo="Typo.caption">@context.FeeditemCount</MudText>
                        </div>
                    </div>
                </Content>
            </MudTreeViewItem>
        </ItemTemplate>
    </MudTreeView>
</MudStack>

@code {
    private MudTheme Theme = new MudTheme();
    private readonly HashSet<TreeItemData> _guideItems = new HashSet<TreeItemData>();
    private TreeItemData? _selectedItem;
    private TreeItemData? SelectedItem 
    {
        get => _selectedItem;
        set
        {
            _selectedItem = value;
            ItemClicked();
        }
    }
    private void ItemClicked()
    {
        if (SelectedItem == null) return;
        _stateContainer.SetValue(SelectedItem);
    }
    protected override async void OnInitialized()
    {
        Log.Verbose("Loading guide data...");
        HashSet<object> items = await _rssService.GetAllUnsortedAsync();
        _guideItems.UnionWith(items.Select(x => x is CategoryModel model ? new TreeItemData(model, _rssService) : x is FeedModel feedModel ? new TreeItemData(feedModel, _rssService) : throw new ArgumentException("Arg x is invalid!")));

        StateHasChanged();
        Log.Verbose(" Guide initialized!");
    }
}