@namespace DeepDrftPublic.Client.Controls
@using DeepDrftModels.DTOs
@using DeepDrftPublic.Client.Services

@* Append-only "Add to Queue" affordance placed beside a play control. Add is NOT play: it calls the
   cascaded IQueueService's Enqueue/EnqueueRange (which append to the END without disturbing current
   playback; a first add into a dormant queue seeds the head from the externally-playing track when one
   exists, then appends) — never PlayRelease/PlayTrack/Start/Select. Track mode (Track set) appends a
   single track; release mode (ReleaseTracks set) appends the whole ordered list. Reads queue state from
   the layout-level cascade (C1); owns no data fetch. *@

<MudTooltip Text="@Tooltip">
    <MudIconButton Icon="@Icons.Material.Filled.PlaylistAdd"
                   Color="@Color"
                   Size="@Size"
                   Disabled="@(Queue is null || !RendererInfo.IsInteractive)"
                   OnClick="@AddToQueue" />
</MudTooltip>

@code {
    [CascadingParameter] public IQueueService? Queue { get; set; }

    /// <summary>Single track to append (track mode). Mutually exclusive with <see cref="ReleaseTracks"/>.</summary>
    [Parameter] public TrackDto? Track { get; set; }

    /// <summary>Ordered release tracks to append (release mode). Mutually exclusive with <see cref="Track"/>.</summary>
    [Parameter] public IReadOnlyList<TrackDto>? ReleaseTracks { get; set; }

    [Parameter] public Size Size { get; set; } = Size.Medium;
    [Parameter] public Color Color { get; set; } = Color.Secondary;

    private string Tooltip => ReleaseTracks is not null ? "Add release to queue" : "Add to queue";

    private void AddToQueue()
    {
        if (Queue is null) return;

        if (ReleaseTracks is not null)
        {
            Queue.EnqueueRange(ReleaseTracks);
        }
        else if (Track is not null)
        {
            Queue.Enqueue(Track);
        }
    }
}