@using Microsoft.AspNetCore.Components.Web
@inject IAudioPlayerService AudioPlayerService

<MudItem @onmouseenter="HandleMouseEnter"
          @onmouseleave="HandleMouseLeave"
          style="position: relative; display: inline-block; cursor: pointer; border-radius: 4px; overflow: hidden;">
    
    <MudImage Src="@CoverUrl.FormatCoverUrl(Width, Height)" Height="@Height" Width="@Width" Class="rounded" Style="display: block;" />
    
    @if (CanPlay && (_isHovered || IsCurrentTrackPlaying))
    {
        <MudItem class="play-overlay"
                  style="position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; border-radius: 4px;">
            <MudIconButton Icon="@(IsCurrentTrackPlaying? Icons.Material.Filled.Pause : Icons.Material.Filled.PlayArrow)"
                           Color="Color.Inherit"
                           Size="Size.Large"
                           OnClick="OnPlayClick" />
        </MudItem>
    }
</MudItem>

@code {
    [Parameter] public string CoverUrl { get; set; } = string.Empty;
    [Parameter] public string TrackTitle { get; set; } = string.Empty;
    [Parameter] public string TrackId { get; set; } = string.Empty;
    [Parameter] public int Height { get; set; } = 50;
    [Parameter] public int Width { get; set; } = 50;
    [Parameter] public string PlaylistShareToken { get; set; } = string.Empty;
    [Parameter] public bool CanPlay { get; set; } = false;

    private bool IsCurrentTrackPlaying => AudioPlayerService.IsPlaying && AudioPlayerService.CurrentTrackId == TrackId;

    private bool _isHovered;

    private void HandleMouseEnter() => _isHovered = true;
    private void HandleMouseLeave() => _isHovered = false;

    protected override void OnInitialized()
    {
        AudioPlayerService.OnStateChanged += OnPlayerStateChanged;
    }

    private async Task OnPlayClick()
    {
        var playlistShareToken = string.IsNullOrWhiteSpace(PlaylistShareToken) ? null : PlaylistShareToken;

        if (IsCurrentTrackPlaying)
        {
            await AudioPlayerService.PauseAsync();
        }
        else
        {
            await AudioPlayerService.LoadAndPlayAsync(
                trackId: TrackId,
                playlistShareToken: playlistShareToken,
                title: TrackTitle,
                coverUrl: CoverUrl);
        }
    }

    private void OnPlayerStateChanged()
    {
        InvokeAsync(StateHasChanged);
    }
}