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

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

<MudStack Spacing="2">
    <MudTreeView Items="Categories" @bind-SelectedValue="SelectedItem" Hover="true">
        <ItemTemplate>
            <MudTreeViewItem @bind-Expanded="@context.IsExpanded" Items="@context.Feeds" Value="@context">
                <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" />
                            @if (context.FaviconUrl.IsNullEmptyWhiteSpace() && context.Icon != null)
                            {
                                <MudIcon Icon="@context.Icon"/>
                            }
                            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 {
    public HashSet<TreeItemData> Categories = new HashSet<TreeItemData>();
    private TreeItemData? _selecteditem;
    private TreeItemData? SelectedItem 
    {
        get => _selecteditem;
        set
        {
            _selecteditem = value;
            ItemClicked();
        }
    }
    private void ItemClicked()
    {
        if (SelectedItem == null) return;
        if (SelectedItem.FeedModel != null)
            _stateContainer.SetValue(new HashSet<FeedModel>() { SelectedItem.FeedModel });
        if (SelectedItem.Feeds != null)
        {

        }
        //_navManager.NavigateTo("/");
    }
    protected override async void OnInitialized()
    {
        Log.Verbose("Loading guide data...");

        HashSet<CategoryModel> cats = await _rssService.GetCategories();
        await Task.Run(() => Categories.UnionWith(cats.Select(x => new TreeItemData(x)).ToHashSet()));

        StateHasChanged();
        Log.Verbose(" Guide initialized!");
        //await Task.Run(() => Categories = cats.Select(x => new TreeItemData(x)).ToHashSet());
    }
}