@page "/media/collections/{Id:int}"
@using ErsatzTV.Application.MediaCards
@using ErsatzTV.Application.MediaCards.Queries
@using ErsatzTV.Application.MediaCollections.Commands
@inherits MultiSelectBase<CollectionItems>
@inject NavigationManager _navigationManager
@inject ChannelWriter<IBackgroundServiceRequest> _channel
@inject IJSRuntime _jsRuntime

<MudPaper Square="true" Style="display: flex; height: 64px; left: 240px; padding: 0; position: fixed; right: 0; z-index: 100;">
    <div style="align-items: center; display: flex; flex-direction: row; margin-bottom: auto; margin-top: auto; width: 100%;" class="ml-6 mr-6">
        @if (IsSelectMode())
        {
            <MudText Typo="Typo.h6" Color="Color.Primary">@SelectionLabel()</MudText>
            <div style="margin-left: auto">
                <MudButton Variant="Variant.Filled"
                           Color="Color.Error"
                           StartIcon="@Icons.Material.Filled.Remove"
                           OnClick="@(_ => RemoveSelectionFromCollection(Id))">
                    Remove From Collection
                </MudButton>
                <MudButton Class="ml-3"
                           Variant="Variant.Filled"
                           Color="Color.Secondary"
                           StartIcon="@Icons.Material.Filled.Check"
                           OnClick="@(_ => ClearSelection())">
                    Clear Selection
                </MudButton>
            </div>
        }
        else
        {
            <div style="display: flex; flex-direction: row;">
                <MudText Typo="Typo.h4">@_data.Name</MudText>
                <MudIconButton Icon="@Icons.Material.Filled.Edit"
                               Link="@($"/media/collections/{Id}/edit")"
                               Style="margin-bottom: auto; margin-top: auto;"/>
            </div>
            @if (_data.MovieCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#movies")">@_data.MovieCards.Count Movies</MudLink>
            }
            @if (_data.ShowCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#shows")">@_data.ShowCards.Count Shows</MudLink>
            }
            @if (_data.SeasonCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#seasons")">@_data.SeasonCards.Count Seasons</MudLink>
            }
            @if (_data.EpisodeCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#episodes")">@_data.EpisodeCards.Count Episodes</MudLink>
            }
            @if (_data.ArtistCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#artists")">@_data.ArtistCards.Count Artists</MudLink>
            }
            @if (_data.MusicVideoCards.Any())
            {
                <MudLink Class="ml-4" Href="@(_navigationManager.Uri.Split("#").Head() + "#music_videos")">@_data.MusicVideoCards.Count Music Videos</MudLink>
            }
            @if (SupportsCustomOrdering())
            {
                <div style="margin-left: auto">
                    <MudSwitch T="bool"
                               Checked="@_data.UseCustomPlaybackOrder"
                               Color="Color.Primary"
                               CheckedChanged="@OnUseCustomOrderChanged"
                               Label="Use Custom Playback Order"/>
                </div>
            }
        }
    </div>
</MudPaper>
<MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="pt-8" Style="margin-top: 64px">

    @if (_data.MovieCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "movies" } })">
            Movies
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid" UserAttributes="@(new Dictionary<string, object> { { "id", "sortable-collection" } })">
            @foreach (MovieCardViewModel card in OrderMovies(_data.MovieCards))
            {
                <MediaCard Data="@card"
                           Link="@($"/media/movies/{card.MovieId}")"
                           DeleteClicked="@RemoveMovieFromCollection"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }

    @if (_data.ShowCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "shows" } })">
            Television Shows
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid">
            @foreach (TelevisionShowCardViewModel card in _data.ShowCards.OrderBy(m => m.SortTitle))
            {
                <MediaCard Data="@card"
                           Link="@($"/media/tv/shows/{card.TelevisionShowId}")"
                           DeleteClicked="@RemoveShowFromCollection"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }

    @if (_data.SeasonCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "seasons" } })">
            Television Seasons
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid">
            @foreach (TelevisionSeasonCardViewModel card in _data.SeasonCards.OrderBy(m => m.SortTitle))
            {
                <MediaCard Data="@card"
                           Link="@($"/media/tv/seasons/{card.TelevisionSeasonId}")"
                           Title="@card.ShowTitle"
                           Subtitle="@card.Title"
                           DeleteClicked="@RemoveSeasonFromCollection"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }

    @if (_data.EpisodeCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "episodes" } })">
            Television Episodes
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid">
            @foreach (TelevisionEpisodeCardViewModel card in _data.EpisodeCards.OrderBy(e => e.Aired))
            {
                <MediaCard Data="@card"
                           Link="@($"/media/tv/seasons/{card.SeasonId}#episode-{card.EpisodeId}")"
                           Title="@card.ShowTitle"
                           Subtitle="@card.Title"
                           ContainerClass="media-card-episode-container mx-2"
                           CardClass="media-card-episode"
                           DeleteClicked="@(_ => RemoveEpisodeFromCollection(card))"
                           ArtworkKind="@ArtworkKind.Thumbnail"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }

    @if (_data.ArtistCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "artists" } })">
            Artists
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid">
            @foreach (ArtistCardViewModel card in _data.ArtistCards.OrderBy(e => e.SortTitle))
            {
                <MediaCard Data="@card"
                           Link="@($"/media/music/artists/{card.ArtistId}")"
                           ArtworkKind="ArtworkKind.Thumbnail"
                           DeleteClicked="@RemoveArtistFromCollection"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }

    @if (_data.MusicVideoCards.Any())
    {
        <MudText GutterBottom="true"
                 Typo="Typo.h4"
                 Style="scroll-margin-top: 160px"
                 UserAttributes="@(new Dictionary<string, object> { { "id", "music_videos" } })">
            Music Videos
        </MudText>

        <MudContainer MaxWidth="MaxWidth.False" Class="media-card-grid">
            @foreach (MusicVideoCardViewModel card in _data.MusicVideoCards.OrderBy(e => e.SortTitle))
            {
                <MediaCard Data="@card"
                           Link=""
                           ArtworkKind="ArtworkKind.Thumbnail"
                           DeleteClicked="@RemoveMusicVideoFromCollection"
                           SelectColor="@Color.Error"
                           SelectClicked="@(e => SelectClicked(card, e))"
                           IsSelected="@IsSelected(card)"
                           IsSelectMode="@IsSelectMode()"/>
            }
        </MudContainer>
    }
</MudContainer>

@code {

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

    private CollectionCardResultsViewModel _data;

    private bool SupportsCustomOrdering() =>
        _data.MovieCards.Any() && !_data.ShowCards.Any() && !_data.SeasonCards.Any() && !_data.EpisodeCards.Any();

    protected override async Task OnParametersSetAsync() => await RefreshData();

    protected override async Task RefreshData()
    {
        Either<BaseError, CollectionCardResultsViewModel> maybeResult =
            await Mediator.Send(new GetCollectionCards(Id));

        maybeResult.Match(
            result => _data = result,
            error => _navigationManager.NavigateTo("404"));
    }

    private IOrderedEnumerable<MovieCardViewModel> OrderMovies(List<MovieCardViewModel> movies)
    {
        if (_data.UseCustomPlaybackOrder)
        {
            return movies.OrderBy(m => m.CustomIndex);
        }

        return movies.OrderBy(m => m.SortTitle);
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        await _jsRuntime.InvokeVoidAsync("sortableCollection", Id);
        if (_data.UseCustomPlaybackOrder)
        {
            await _jsRuntime.InvokeVoidAsync("enableSorting");
        }
        else
        {
            await _jsRuntime.InvokeVoidAsync("disableSorting");
        }
        await base.OnAfterRenderAsync(firstRender);
    }

    private void SelectClicked(MediaCardViewModel card, MouseEventArgs e)
    {
        List<MediaCardViewModel> GetSortedItems()
        {
            return _data.MovieCards.OrderBy(m => m.SortTitle)
                .Append<MediaCardViewModel>(_data.ShowCards.OrderBy(s => s.SortTitle))
                .Append(_data.SeasonCards.OrderBy(s => s.SortTitle))
                .Append(_data.EpisodeCards.OrderBy(ep => ep.Aired))
                .Append(_data.ArtistCards.OrderBy(a => a.SortTitle))
                .Append(_data.MusicVideoCards.OrderBy(mv => mv.SortTitle))
                .ToList();
        }

        SelectClicked(GetSortedItems, card, e);
    }

    private async Task RemoveMovieFromCollection(MediaCardViewModel vm)
    {
        if (vm is MovieCardViewModel movie)
        {
            var request = new RemoveItemsFromCollection(Id)
            {
                MediaItemIds = new List<int> { movie.MovieId }
            };

            await RemoveItemsWithConfirmation("movie", $"{movie.Title} ({movie.Subtitle})", request);
        }
    }

    private async Task RemoveArtistFromCollection(MediaCardViewModel vm)
    {
        if (vm is ArtistCardViewModel artist)
        {
            var request = new RemoveItemsFromCollection(Id)
            {
                MediaItemIds = new List<int> { artist.ArtistId }
            };

            await RemoveItemsWithConfirmation(
                "artist",
                string.IsNullOrWhiteSpace(artist.Subtitle) ? artist.Title : $"{artist.Title} ({artist.Subtitle})",
                request);
        }
    }

    private async Task RemoveMusicVideoFromCollection(MediaCardViewModel vm)
    {
        if (vm is MusicVideoCardViewModel musicVideo)
        {
            var request = new RemoveItemsFromCollection(Id)
            {
                MediaItemIds = new List<int> { musicVideo.MusicVideoId }
            };

            await RemoveItemsWithConfirmation("music video", $"{musicVideo.Title} ({musicVideo.Subtitle})", request);
        }
    }

    private async Task RemoveShowFromCollection(MediaCardViewModel vm)
    {
        if (vm is TelevisionShowCardViewModel show)
        {
            var request = new RemoveItemsFromCollection(Id)
            {
                MediaItemIds = new List<int> { show.TelevisionShowId }
            };

            await RemoveItemsWithConfirmation("show", $"{show.Title} ({show.Subtitle})", request);
        }
    }

    private async Task RemoveSeasonFromCollection(MediaCardViewModel vm)
    {
        if (vm is TelevisionSeasonCardViewModel season)
        {
            var request = new RemoveItemsFromCollection(Id)
            {
                MediaItemIds = new List<int> { season.TelevisionSeasonId }
            };

            await RemoveItemsWithConfirmation("season", $"{season.ShowTitle} - {season.Title}", request);
        }
    }

    private async Task RemoveEpisodeFromCollection(TelevisionEpisodeCardViewModel episode)
    {
        var request = new RemoveItemsFromCollection(Id)
        {
            MediaItemIds = new List<int> { episode.EpisodeId }
        };

        await RemoveItemsWithConfirmation("episode", $"{episode.ShowTitle} - {episode.Title}", request);
    }

    private async Task RemoveItemsWithConfirmation(
        string entityType,
        string entityName,
        RemoveItemsFromCollection request)
    {
        var parameters = new DialogParameters { { "EntityType", entityType }, { "EntityName", entityName } };
        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };

        IDialogReference dialog = Dialog.Show<RemoveFromCollectionDialog>("Remove From Collection", parameters, options);
        DialogResult result = await dialog.Result;
        if (!result.Cancelled)
        {
            await Mediator.Send(request);
            await RefreshData();
        }
    }

    private async Task OnUseCustomOrderChanged()
    {
        _data.UseCustomPlaybackOrder = !_data.UseCustomPlaybackOrder;
        var request = new UpdateCollection(Id, _data.Name) { UseCustomPlaybackOrder = _data.UseCustomPlaybackOrder };
        await Mediator.Send(request);
    }

}