@page "/media/rerun-collections/{Id:int}/edit"
@page "/media/rerun-collections/add"
@using ErsatzTV.Application.MediaCollections
@using ErsatzTV.Application.MediaItems
@using ErsatzTV.Application.Search
@implements IDisposable
@inject NavigationManager NavigationManager
@inject ISnackbar Snackbar
@inject IMediator Mediator
@inject ILogger<RerunCollectionEditor> Logger

<MudForm @ref="_form" @bind-IsValid="@_success" Style="max-height: 100%">
    <MudPaper Square="true" Style="display: flex; height: 64px; min-height: 64px; width: 100%; z-index: 100; align-items: center">
        <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="@(_ => HandleSubmitAsync())" Class="ml-6" StartIcon="@Icons.Material.Filled.Save">
            @(IsEdit ? "Save Rerun Collection" : "Add Rerun Collection")
        </MudButton>
    </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">Rerun Collection</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>Name</MudText>
                </div>
                <MudTextField @bind-Value="_model.Name" For="@(() => _model.Name)" Required="true" RequiredError="Rerun collection name is required!"/>
            </MudStack>
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                <div class="d-flex">
                    <MudText>Collection Type</MudText>
                </div>
                <MudSelect @bind-Value="_model.CollectionType" For="@(() => _model.CollectionType)">
                    <MudSelectItem Value="CollectionType.Collection">Collection</MudSelectItem>
                    <MudSelectItem Value="CollectionType.TelevisionShow">Television Show</MudSelectItem>
                    <MudSelectItem Value="CollectionType.TelevisionSeason">Television Season</MudSelectItem>
                    <MudSelectItem Value="CollectionType.Artist">Artist</MudSelectItem>
                    <MudSelectItem Value="CollectionType.MultiCollection">Multi Collection</MudSelectItem>
                    <MudSelectItem Value="CollectionType.SmartCollection">Smart Collection</MudSelectItem>
                </MudSelect>
            </MudStack>
            @if (_model.CollectionType == CollectionType.Collection)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Collection</MudText>
                    </div>
                    <MudAutocomplete T="MediaCollectionViewModel"
                                     @bind-Value="_model.Collection" SearchFunc="@SearchCollections"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search...">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 10 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }

            @if (_model.CollectionType == CollectionType.MultiCollection)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Multi Collection</MudText>
                    </div>
                    <MudAutocomplete T="MultiCollectionViewModel"
                                     @bind-Value="_model.MultiCollection" SearchFunc="@SearchMultiCollections"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search...">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 10 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }

            @if (_model.CollectionType == CollectionType.SmartCollection)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Smart Collection</MudText>
                    </div>
                    <MudAutocomplete T="SmartCollectionViewModel"
                                     @bind-Value="_model.SmartCollection" SearchFunc="@SearchSmartCollections"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search...">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 10 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }

            @if (_model.CollectionType == CollectionType.TelevisionShow)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Television Show</MudText>
                    </div>
                    <MudAutocomplete T="NamedMediaItemViewModel"
                                     @bind-Value="_model.MediaItem" SearchFunc="@SearchTelevisionShows"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search...">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 10 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }

            @if (_model.CollectionType == CollectionType.TelevisionSeason)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Television Season</MudText>
                    </div>
                    <MudAutocomplete T="NamedMediaItemViewModel"
                                     @bind-Value="_model.MediaItem" SearchFunc="@SearchTelevisionSeasons"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search..."
                                     MaxItems="20">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 20 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }

            @if (_model.CollectionType == CollectionType.Artist)
            {
                <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                    <div class="d-flex">
                        <MudText>Artist</MudText>
                    </div>
                    <MudAutocomplete T="NamedMediaItemViewModel"
                                     @bind-Value="_model.MediaItem" SearchFunc="@SearchArtists"
                                     ToStringFunc="@(c => c?.Name)" Placeholder="Type to search..."
                                     MaxItems="10">
                        <MoreItemsTemplate>
                            <MudText Align="Align.Center" Class="px-4 py-1">
                                Only the first 10 items are shown
                            </MudText>
                        </MoreItemsTemplate>
                    </MudAutocomplete>
                </MudStack>
            }
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                <div class="d-flex">
                    <MudText>First Run Playback Order</MudText>
                </div>
                <MudSelect @bind-Value="@_model.FirstRunPlaybackOrder" For="@(() => _model.FirstRunPlaybackOrder)">
                    @switch (_model.CollectionType)
                    {
                        case CollectionType.MultiCollection:
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        case CollectionType.Collection:
                        case CollectionType.SmartCollection:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        case CollectionType.TelevisionShow:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.SeasonEpisode">Season, Episode</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        default:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                    }
                </MudSelect>
            </MudStack>
            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
                <div class="d-flex">
                    <MudText>Rerun Playback Order</MudText>
                </div>
                <MudSelect @bind-Value="@_model.RerunPlaybackOrder" For="@(() => _model.RerunPlaybackOrder)">
                    @switch (_model.CollectionType)
                    {
                        case CollectionType.MultiCollection:
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        case CollectionType.Collection:
                        case CollectionType.SmartCollection:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        case CollectionType.TelevisionShow:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.SeasonEpisode">Season, Episode</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                        default:
                            <MudSelectItem Value="PlaybackOrder.Chronological">Chronological</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Random">Random</MudSelectItem>
                            <MudSelectItem Value="PlaybackOrder.Shuffle">Shuffle</MudSelectItem>
                            break;
                    }
                </MudSelect>
            </MudStack>
        </MudContainer>
    </div>
</MudForm>

@code {
    private CancellationTokenSource _cts;

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

    private readonly RerunCollectionEditViewModel _model = new();

    private MudForm _form;
    private bool _success;

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

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

        try
        {
            if (IsEdit)
            {
                Option<RerunCollectionViewModel> maybeCollection = await Mediator.Send(new GetRerunCollectionById(Id), token);
                maybeCollection.IfSome(collection =>
                {
                    _model.Id = collection.Id;
                    _model.Name = collection.Name;
                    _model.CollectionType = collection.CollectionType;
                    _model.Collection = collection.Collection;
                    _model.MultiCollection = collection.MultiCollection;
                    _model.SmartCollection = collection.SmartCollection;
                    _model.MediaItem = collection.MediaItem;
                    _model.FirstRunPlaybackOrder = collection.FirstRunPlaybackOrder;
                    _model.RerunPlaybackOrder = collection.RerunPlaybackOrder;
                });
            }
            else
            {
                _model.Name = "New Rerun Collection";
            }
        }
        catch (OperationCanceledException)
        {
            // do nothing
        }
    }

    private bool IsEdit => Id != 0;

        private async Task<IEnumerable<MediaCollectionViewModel>> SearchCollections(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<MediaCollectionViewModel>();
        }

        return await Mediator.Send(new SearchCollections(value), _cts.Token);
    }

    private async Task<IEnumerable<MultiCollectionViewModel>> SearchMultiCollections(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<MultiCollectionViewModel>();
        }

        return await Mediator.Send(new SearchMultiCollections(value), _cts.Token);
    }

    private async Task<IEnumerable<SmartCollectionViewModel>> SearchSmartCollections(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<SmartCollectionViewModel>();
        }

        return await Mediator.Send(new SearchSmartCollections(value), _cts.Token);
    }

    private async Task<IEnumerable<NamedMediaItemViewModel>> SearchTelevisionShows(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<NamedMediaItemViewModel>();
        }

        return await Mediator.Send(new SearchTelevisionShows(value), _cts.Token);
    }

    private async Task<IEnumerable<NamedMediaItemViewModel>> SearchTelevisionSeasons(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<NamedMediaItemViewModel>();
        }

        return await Mediator.Send(new SearchTelevisionSeasons(value), _cts.Token);
    }

    private async Task<IEnumerable<NamedMediaItemViewModel>> SearchArtists(string value, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return new List<NamedMediaItemViewModel>();
        }

        return await Mediator.Send(new SearchArtists(value), _cts.Token);
    }

    private async Task HandleSubmitAsync()
    {
        await _form.Validate();
        if (_success)
        {
            Seq<BaseError> errorMessage = IsEdit
                ? (await Mediator.Send(_model.ToUpdate(), _cts.Token)).LeftToSeq()
                : (await Mediator.Send(_model.ToCreate(), _cts.Token)).LeftToSeq();

            errorMessage.HeadOrNone().Match(
                error =>
                {
                    Snackbar.Add(error.Value, Severity.Error);
                    Logger.LogError("Error saving collection: {Error}", error.Value);
                },
                () => NavigationManager.NavigateTo("media/rerun-collections"));
        }
    }
}