@page "/playouts/classic/{Id:int}"
@using ErsatzTV.Application.Channels
@using ErsatzTV.Application.Scheduling
@implements IDisposable
@inject NavigationManager NavigationManager
@inject ISnackbar Snackbar
@inject IMediator Mediator
@inject IEntityLocker EntityLocker;

<MudForm Style="max-height: 100%">
    <MudPaper Square="true" Style="display: flex; height: 64px; min-height: 64px; width: 100%; z-index: 100; align-items: center">
    </MudPaper>
    <div class="d-flex flex-column" style="height: 100vh; overflow-x: auto">
        <MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="pt-8">
            <MudText Typo="Typo.h5" Class="mb-2">@_channelName - Classic Playout</MudText>
            <MudDivider Class="mb-6"/>
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                <div class="d-flex">
                    <MudText>Alternate Schedules</MudText>
                </div>
                @if (_playoutMode is ChannelPlayoutMode.OnDemand)
                {
                    <MudButton Disabled="@true" Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Edit">
                        Edit Alternate Schedules
                    </MudButton>
                }
                else
                {
                    <MudButton Disabled="@EntityLocker.IsPlayoutLocked(Id)" Variant="Variant.Filled" Color="Color.Primary" Href="@($"playouts/{Id}/alternate-schedules")" StartIcon="@Icons.Material.Filled.Edit">
                        Edit Alternate Schedules
                    </MudButton>
                }
            </MudStack>
            <MudText Typo="Typo.h5" Class="mt-10 mb-2">Maintenance</MudText>
            <MudDivider Class="mb-6"/>
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                <div class="d-flex">
                    <MudText>Playout Items and History</MudText>
                </div>
                <MudButton Disabled="@EntityLocker.IsPlayoutLocked(Id)" Variant="Variant.Filled" Color="Color.Error" OnClick="@(_ => EraseItemsAndHistory())" StartIcon="@Icons.Material.Filled.Delete">
                    Erase Items and History
                </MudButton>
            </MudStack>
        </MudContainer>
    </div>
</MudForm>

@code {
    private CancellationTokenSource _cts;
    private ChannelPlayoutMode _playoutMode;

    [Parameter]
    public int Id { get; set; }

    private string _channelName;

    public void Dispose()
    {
        _cts?.Cancel();
        _cts?.Dispose();
    }

    protected override async Task OnParametersSetAsync()
    {
        _cts?.Cancel();
        _cts?.Dispose();
        _cts = new CancellationTokenSource();
        var token = _cts.Token;

        try
        {
            Option<ChannelViewModel> maybeChannel = await Mediator.Send(new GetChannelByPlayoutId(Id), token);
            if (maybeChannel.IsNone)
            {
                NavigationManager.NavigateTo("playouts");
                return;
            }

            foreach (ChannelViewModel channel in maybeChannel)
            {
                _channelName = channel.Name;
                _playoutMode = channel.PlayoutMode;
            }
        }
        catch (OperationCanceledException)
        {
            // do nothing
        }
    }

    private async Task EraseItemsAndHistory()
    {
        await Mediator.Send(new ErasePlayoutHistory(Id), _cts.Token);
        Snackbar.Add("Erased playout items and history", Severity.Info);
    }

}