@page "/media/tv/seasons/{SeasonId:int}"
@using ErsatzTV.Application.MediaCards
@using ErsatzTV.Application.MediaCollections
@using ErsatzTV.Application.MediaItems
@using ErsatzTV.Application.ProgramSchedules
@using ErsatzTV.Application.Television
@using ErsatzTV.Extensions
@implements IDisposable
@inject IMediator Mediator
@inject ILogger<TelevisionEpisodeList> Logger
@inject ISnackbar Snackbar
@inject IDialogService Dialog
@inject NavigationManager NavigationManager
@inject IJSRuntime JsRuntime

<MudContainer MaxWidth="MaxWidth.False" Style="padding: 0" Class="fanart-container">
    <div class="fanart-tint"></div>
    @if (!string.IsNullOrWhiteSpace(_season?.FanArt))
    {
        if (_season.FanArt.StartsWith("http://") || _season.FanArt.StartsWith("https://"))
        {
            <img src="@_season.FanArt" alt="fan art"/>
        }
        else
        {
            <img src="@($"artwork/fanart/{_season.FanArt}")" alt="fan art"/>
        }
    }
</MudContainer>
<MudContainer MaxWidth="MaxWidth.Large" Style="margin-top: 100px" Class="z-10">
    <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Spacing="6">
        @if (!string.IsNullOrWhiteSpace(_season?.Poster))
        {
            <MudImage Src="@GetPosterUrl(_season.Poster)" Elevation="2" Class="rounded-lg z-10" Style="max-height: 325px; margin-left: auto; margin-right: auto"/>
        }
        <MudStack Row="false" Style="flex: 1" Class="z-10">
            <MudStack Row="false">
                <MudLink Href="@($"media/tv/shows/{_season?.ShowId}")">
                    <MudHidden Invert="true" Breakpoint="Breakpoint.SmAndDown">
                        <MudText Typo="Typo.h4" Class="media-item-title">@_season?.Title</MudText>
                    </MudHidden>
                    <MudHidden Invert="true" Breakpoint="Breakpoint.MdAndUp">
                        <MudText Typo="Typo.h2" Class="media-item-title">@_season?.Title</MudText>
                    </MudHidden>
                </MudLink>
                <MudText Typo="Typo.subtitle1" Class="media-item-subtitle mb-6 mud-text-secondary">@_season?.Name</MudText>
            </MudStack>
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="mb-6">
                <MudButton Variant="Variant.Filled"
                           Color="Color.Primary"
                           StartIcon="@Icons.Material.Filled.Add"
                           OnClick="@AddToCollection">
                    Add To Collection
                </MudButton>
                <MudButton Variant="Variant.Filled"
                           Color="Color.Primary"
                           StartIcon="@Icons.Material.Filled.PlaylistAdd"
                           OnClick="@AddToPlaylist">
                    Add To Playlist
                </MudButton>
                <MudButton Variant="Variant.Filled"
                           Color="Color.Primary"
                           StartIcon="@Icons.Material.Filled.Schedule"
                           OnClick="@AddToSchedule">
                    Add To Schedule
                </MudButton>
            </MudStack>
        </MudStack>
    </MudStack>
</MudContainer>
<MudContainer MaxWidth="MaxWidth.Large" Class="mt-8">
    <MudStack Row="false" Spacing="6">
        @foreach (TelevisionEpisodeCardViewModel episode in _data.Cards)
        {
            <MudCard>
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" id="@($"episode-{episode.EpisodeId}")">
                    @if (!string.IsNullOrWhiteSpace(episode.Poster))
                    {
                        <div style="display: flex; flex-direction: column; position: relative">
                            <MudHidden Invert="true" Breakpoint="Breakpoint.SmAndDown">
                                <MudImage Src="@GetThumbnailUrl(episode.Poster)" Style="max-height: 220px; max-width: 265px; margin-left: auto; margin-right: auto;"/>
                            </MudHidden>
                            <MudHidden Invert="true" Breakpoint="Breakpoint.MdAndUp">
                                <MudImage Src="@GetThumbnailUrl(episode.Poster)" Style="max-height: 220px; max-width: 392px; margin-left: auto; margin-right: auto;"/>
                            </MudHidden>
                            @if (episode.State == MediaItemState.FileNotFound)
                            {
                                <div style="position: absolute; right: 10px; top: 8px;">
                                    <MudIcon Icon="@Icons.Material.Filled.Warning" Color="Color.Error" Size="Size.Large"/>
                                </div>
                            }
                            else if (episode.State == MediaItemState.Unavailable)
                            {
                                <div style="position: absolute; right: 10px; top: 8px;">
                                    <MudIcon Icon="@Icons.Material.Filled.Warning" Color="Color.Warning" Size="Size.Large"/>
                                </div>
                            }
                        </div>
                    }
                    <MudCardContent Class="ml-3">
                        <div style="display: flex; flex-direction: column; height: 100%">
                            <MudText Typo="Typo.h4" Class="mb-6">@episode.Episode. @episode.Title</MudText>
                            <MudText Class="d-none d-md-flex" Style="flex-grow: 1">@episode.Plot</MudText>
                            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown">
                                <MudMenu Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Add" Label="Add To ...">
                                    <MudMenuItem OnClick="@(_ => AddEpisodeToCollection(episode))" Icon="@Icons.Material.Filled.Add">
                                        Add To Collection
                                    </MudMenuItem>
                                    <MudMenuItem OnClick="@(_ => AddEpisodeToPlaylist(episode))" Icon="@Icons.Material.Filled.PlaylistAdd">
                                        Add To Playlist
                                    </MudMenuItem>
                                </MudMenu>
                                <MudButton Variant="Variant.Filled"
                                           Color="Color.Secondary"
                                           StartIcon="@Icons.Material.Filled.Info"
                                           OnClick="@(_ => ShowInfo(episode))">
                                    Show Media Info
                                </MudButton>
                                <MudButton Variant="Variant.Filled"
                                           Color="Color.Secondary"
                                           StartIcon="@Icons.Material.Filled.Troubleshoot"
                                           Href="@($"system/troubleshooting/playback?mediaItem={episode.EpisodeId}")">
                                    Troubleshoot Playback
                                </MudButton>
                            </MudStack>
                        </div>
                    </MudCardContent>
                </MudStack>
                <div class="pl-3 pt-3">
                    @if (episode.State == MediaItemState.FileNotFound)
                    {
                        <div class="mb-3" style="display: flex; flex-direction: row; flex-wrap: wrap">
                            <MudIcon Icon="@Icons.Material.Filled.Warning" Color="Color.Error" Class="mr-2"/>
                            <MudText>File Not Found:&nbsp;</MudText>
                            <MudText>@episode.Path</MudText>
                        </div>
                    }
                    else if (episode.State == MediaItemState.Unavailable)
                    {
                        <div class="mb-3" style="display: flex; flex-direction: row; flex-wrap: wrap">
                            <MudIcon Icon="@Icons.Material.Filled.Warning" Color="Color.Warning" Class="mr-2"/>
                            <MudText>Unavailable:&nbsp;</MudText>
                            <MudText>@episode.LocalPath</MudText>
                        </div>
                    }
                    <div class="d-none d-md-flex" style="flex-direction: row; flex-wrap: wrap">
                        <MudText GutterBottom="true">Released: @episode.Aired.ToShortDateString()</MudText>
                    </div>
                    @if (episode.Directors.Any())
                    {
                        var sorted = episode.Directors.OrderBy(w => w).ToList();

                        <div style="display: flex; flex-direction: row; flex-wrap: wrap">
                            <MudText GutterBottom="true">Directors:&nbsp;</MudText>
                            <MudLink Href="@(@$"director:""{sorted.Head().ToLowerInvariant()}""".GetRelativeSearchQuery())">@sorted.Head()</MudLink>
                            @foreach (string director in sorted.Skip(1))
                            {
                                <MudText>,&nbsp;</MudText>
                                <MudLink Href="@(@$"director:""{director.ToLowerInvariant()}""".GetRelativeSearchQuery())">@director</MudLink>
                            }
                        </div>
                    }
                    @if (episode.Writers.Any())
                    {
                        var sorted = episode.Writers.OrderBy(w => w).ToList();

                        <div style="display: flex; flex-direction: row; flex-wrap: wrap">
                            <MudText GutterBottom="true">Writers:&nbsp;</MudText>
                            <MudLink Href="@(@$"writer:""{sorted.Head().ToLowerInvariant()}""".GetRelativeSearchQuery())">@sorted.Head()</MudLink>
                            @foreach (string writer in sorted.Skip(1))
                            {
                                <MudText>,&nbsp;</MudText>
                                <MudLink Href="@(@$"writer:""{writer.ToLowerInvariant()}""".GetRelativeSearchQuery())">@writer</MudLink>
                            }
                        </div>
                    }
                </div>
            </MudCard>
        }
    </MudStack>
</MudContainer>

@code {
    private CancellationTokenSource _cts;

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

    private TelevisionSeasonViewModel _season;

    private static int PageSize => 100;
    private const int PageNumber = 1;

    private TelevisionEpisodeCardResultsViewModel _data = new(0, new List<TelevisionEpisodeCardViewModel>(), null);

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

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            try
            {
                await NavigationManager.NavigateToFragmentAsync(JsRuntime);
            }
            catch (Exception)
            {
                // ignored
            }
        }
    }

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

        try
        {
            await Mediator.Send(new GetTelevisionSeasonById(SeasonId), token).IfSomeAsync(vm => _season = vm);
            _data = await Mediator.Send(new GetTelevisionEpisodeCards(SeasonId, PageNumber, PageSize), token);
        }
        catch (OperationCanceledException)
        {
            // do nothing
        }
    }

    private async Task AddToCollection()
    {
        var parameters = new DialogParameters { { "EntityType", "season" }, { "EntityName", $"{_season.Title} - {_season.Name}" } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = await Dialog.ShowAsync<AddToCollectionDialog>("Add To Collection", parameters, options);
        DialogResult result = await dialog.Result;
        if (result is { Canceled: false, Data: MediaCollectionViewModel collection })
        {
            await Mediator.Send(new AddSeasonToCollection(collection.Id, SeasonId), _cts.Token);
            NavigationManager.NavigateTo($"media/collections/{collection.Id}");
        }
    }

    private async Task AddToPlaylist()
    {
        var parameters = new DialogParameters { { "EntityType", "season" }, { "EntityName", $"{_season.Title} - {_season.Name}" } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = await Dialog.ShowAsync<AddToPlaylistDialog>("Add To Playlist", parameters, options);
        DialogResult result = await dialog.Result;
        if (result is { Canceled: false, Data: PlaylistViewModel playlist })
        {
            await Mediator.Send(new AddSeasonToPlaylist(playlist.Id, SeasonId), _cts.Token);
            NavigationManager.NavigateTo($"media/playlists/{playlist.Id}");
        }
    }

    private async Task AddToSchedule()
    {
        var parameters = new DialogParameters { { "EntityType", "season" }, { "EntityName", $"{_season.Title} - {_season.Name}" } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = await Dialog.ShowAsync<AddToScheduleDialog>("Add To Schedule", parameters, options);
        DialogResult result = await dialog.Result;
        if (result is { Canceled: false, Data: ProgramScheduleViewModel schedule })
        {
            await Mediator.Send(AddProgramScheduleItem.ForMediaItem(schedule.Id, CollectionType.TelevisionSeason, SeasonId), _cts.Token);
            NavigationManager.NavigateTo($"schedules/{schedule.Id}/items");
        }
    }

    private async Task AddEpisodeToCollection(TelevisionEpisodeCardViewModel episode)
    {
        var parameters = new DialogParameters { { "EntityType", "episode" }, { "EntityName", episode.Title } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = await Dialog.ShowAsync<AddToCollectionDialog>("Add To Collection", parameters, options);
        DialogResult result = await dialog.Result;
        if (result is { Canceled: false, Data: MediaCollectionViewModel collection })
        {
            var request = new AddEpisodeToCollection(collection.Id, episode.EpisodeId);
            Either<BaseError, Unit> addResult = await Mediator.Send(request, _cts.Token);
            addResult.Match(
                Left: error =>
                {
                    Snackbar.Add($"Unexpected error adding episode to collection: {error.Value}");
                    Logger.LogError("Unexpected error adding episode to collection: {Error}", error.Value);
                },
                Right: _ => Snackbar.Add($"Added {episode.Title} to collection {collection.Name}", Severity.Success));
        }
    }

    private async Task AddEpisodeToPlaylist(TelevisionEpisodeCardViewModel episode)
    {
        var parameters = new DialogParameters { { "EntityType", "episode" }, { "EntityName", episode.Title } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = await Dialog.ShowAsync<AddToPlaylistDialog>("Add To Playlist", parameters, options);
        DialogResult result = await dialog.Result;
        if (result is { Canceled: false, Data: PlaylistViewModel playlist })
        {
            var request = new AddEpisodeToPlaylist(playlist.Id, episode.EpisodeId);
            Either<BaseError, Unit> addResult = await Mediator.Send(request, _cts.Token);
            addResult.Match(
                Left: error =>
                {
                    Snackbar.Add($"Unexpected error adding episode to playlist: {error.Value}");
                    Logger.LogError("Unexpected error adding episode to playlist: {Error}", error.Value);
                },
                Right: _ => Snackbar.Add($"Added {episode.Title} to playlist {playlist.Name}", Severity.Success));
        }
    }

    private async Task ShowInfo(TelevisionEpisodeCardViewModel episode)
    {
        Either<BaseError, MediaItemInfo> maybeInfo = await Mediator.Send(new GetMediaItemInfo(episode.EpisodeId));

        foreach (BaseError error in maybeInfo.LeftToSeq())
        {
            Snackbar.Add("Unexpected error loading media info");
            Logger.LogError("Unexpected error loading media info: {Error}", error.Value);
        }

        foreach (MediaItemInfo info in maybeInfo.RightToSeq())
        {
            var parameters = new DialogParameters { { "MediaItemInfo", info } };
            var options = new DialogOptions { CloseButton = true, CloseOnEscapeKey = true, MaxWidth = MaxWidth.Medium, FullWidth = true };
            IDialogReference dialog = await Dialog.ShowAsync<MediaItemInfoDialog>(
                $"{episode.ShowTitle} - s{episode.Season:00}e{episode.Episode:00} - {episode.Title}",
                parameters,
                options);
            DialogResult _ = await dialog.Result;
        }
    }

    private static string GetPosterUrl(string poster) => poster.StartsWith("http://") || poster.StartsWith("https://") ? poster : $"artwork/posters/{poster}";

    private static string GetThumbnailUrl(string poster) => poster.StartsWith("http://") || poster.StartsWith("https://") ? poster : $"artwork/thumbnails/{poster}";

}