@inject SDK.Client Client
@inject DepotService DepotService
@inject LocalizationService LocalizationService

<Spin Spinning="!Loaded" WrapperClassName="depot-list-spinner">
    @if (ListItems.Any())
    {
        <div class="depot-list no-scrollbar">
            @if (Groups.Count > 1)
            {
                @foreach (var group in Groups)
                {
                    <div class="depot-list-group">
                        <Divider Text="@group" />

                        <div class="depot-list-group-items">
                            @foreach (var item in ListItems.Where(i => i.Groups.Contains(group) || (group == "Uncategorized" && i.Groups.Length == 0)))
                            {
                                <DepotGameItem Item="item" OnClick="OnItemSelected" />
                            }
                        </div>
                    </div>
                }
            }
            else
            {
                <div class="depot-list-items">
                    @foreach (var item in ListItems)
                    {
                        <DepotGameItem Item="item" OnClick="OnItemSelected" />
                    }
                </div>
            }
        </div>
    }
    else if (DepotService.GetItemCount() > 0)
    {
        <Result Title="@LocalizationService.GetString("NoResults")" />
    }
    else if (Loaded)
    {
        <Result
        Status="ResultStatus.Error"
        Title="@LocalizationService.GetString("NoResults")"
        SubTitle="@LocalizationService.GetString("DepotEmptyOrUnauthorized")" />
    }
</Spin>

@code {
    [Parameter] public EventCallback<Models.ListItem> OnItemSelected { get; set; }

    IEnumerable<Models.ListItem> ListItems { get; set; } = new List<Models.ListItem>();

    List<string> Groups = new();

    bool Loaded = false;

    protected override void OnInitialized()
    {
        base.OnInitialized();

        DepotService.OnItemsFiltered += LoadFilteredItems;
    }

    async Task LoadFilteredItems(IEnumerable<Models.ListItem> listItems)
    {
        ListItems = listItems;

        Loaded = true;

        await UpdateGroups();
    }

    async Task UpdateGroups()
    {
        Groups = ListItems.DistinctBy(i => i.Key).SelectMany(i => i.Groups).Distinct().ToList();

        if (ListItems.DistinctBy(i => i.Key).Any(i => i.Groups == null || i.Groups.Length == 0))
            Groups.Add(LocalizationService.GetString("Uncategorized"));

        await InvokeAsync(StateHasChanged);
    }

    public void Dispose()
    {
        DepotService.OnItemsFiltered -= LoadFilteredItems;
    }
}