@using System.Net.Mime
@inject MediaService MediaService
@inject ModalService ModalService
@inject IMessageService MessageService
@inject NavigationManager NavigationManager
@inject ILogger<MediaEditor> Logger

<Flex Direction="FlexDirection.Vertical" Gap="FlexGap.Large" Style="width: 100%" Class="media-editor">
    <Table @ref="ResultsTable" TItem="Media" DataSource="@Values" RowKey="c => c.Id" @bind-SelectedRows="Selected" HidePagination="true" Responsive>
        <TitleTemplate>
            <Flex Justify="FlexJustify.End" Align="FlexAlign.Center" Gap="@("10")">
                @if (Selected.Any())
                {
                    <span>@Selected.Count() selected</span>
                }
                <Popconfirm Disabled="!Selected.Any()" OnConfirm="DeleteAll" Title="Are you sure you want to delete all selected media?">
                    <Button Disabled="!Selected.Any()" Danger>Delete</Button>
                </Popconfirm>
            </Flex>
        </TitleTemplate>
        <ColumnDefinitions Context="row">
            <Selection Type="SelectionType.Checkbox" />
            <PropertyColumn Property="p => p.Id" Title="Preview" Width="100px" Align="ColumnAlign.Center">
                @if (MediaService.FileExists(row))
                {
                    string originalPath = $"/api/Media/{row.Id}/Download?fileId={row.FileId}";
                    string thumbnailPath = row.Thumbnail != null
                        ? $"/api/Media/{row.Thumbnail?.Id}/Download?fileId={row.Thumbnail?.FileId}"
                        : $"/api/Media/{row.Id}/Thumbnail?fileId={row.FileId}";

                    if (row.Type == MediaType.Manual)
                    {
                        <Image Width="100px" Src="@thumbnailPath" PreviewVisible="false" OnClick="() => OpenManual(row)" />
                    }
                    else
                    {
                        <Image Width="100px" Src="@thumbnailPath" PreviewSrc="@originalPath" />
                    }
                }
            </PropertyColumn>
            <PropertyColumn Property="p => p.Type">
                <Select @key="row.Id" @bind-Value="row.Type" TItem="MediaType" TItemValue="MediaType" DataSource="AllowedMediaTypes" />
            </PropertyColumn>
            <PropertyColumn Property="p => p.Name">
                @if (row.Type == MediaType.Manual)
                {
                    <Input @bind-Value="row.Name" OnBlur="() => Update(row)" />
                }
            </PropertyColumn>
            <ActionColumn>
                <Flex Gap="FlexGap.Small" Justify="FlexJustify.End">
                    @{
                        var fileInputId = Guid.NewGuid();
                    }
                    <InputFile id="@fileInputId" OnChange="(e) => UploadMedia(e, row)" hidden accept=".jpg,.jpeg,.png,.gif,.pdf,.ico"/>
                    <label class="ant-btn ant-btn-text ant-btn-icon-only" for="@fileInputId">
                        <Icon Type="@IconType.Outline.Upload"/>
                    </label>

                    @if (String.IsNullOrWhiteSpace(Settings.Media.SteamGridDbApiKey))
                    {
                        <Popconfirm OnConfirm="() => NavigateToSettings()" Title="Invalid SteamGridDB credentials. Setup now?">
                            <Button Type="ButtonType.Text" Icon="@IconType.Outline.Search"/>
                        </Popconfirm>
                    }
                    else
                    {
                        <Button OnClick="() => SearchMedia(row)" Type="ButtonType.Text" Icon="@IconType.Outline.Search"/>
                    }

                    <Popconfirm OnConfirm="() => RemoveMedia(row)" Title="Are you sure you want to delete this media?">
                        <Button Type="ButtonType.Text" Danger Icon="@IconType.Outline.Close"/>
                    </Popconfirm>
                </Flex>
            </ActionColumn>
        </ColumnDefinitions>
    </Table>

    <GridRow Justify="RowJustify.End">
        <GridCol>
            <Button OnClick="AddMedia" Type="@ButtonType.Primary">Add Media</Button>
        </GridCol>
    </GridRow>
</Flex>

@code {
    [Parameter] public ICollection<Media> Values { get; set; } = new List<Media>();
    [Parameter] public EventCallback<ICollection<Media>> ValuesChanged { get; set; }

    [Parameter] public Guid GameId { get; set; }
    [Parameter] public string GameTitle { get; set; }

    IEnumerable<Media> Selected = new List<Media>();
    ITable? ResultsTable;

    Settings Settings = SettingService.GetSettings();

    MediaType[] AllowedMediaTypes = new MediaType[]
    {
        MediaType.Icon,
        MediaType.Cover,
        MediaType.Background,
        MediaType.Logo,
        MediaType.Manual
    };

    MediaType[] SearchableMediaTypes = new MediaType[]
    {
        MediaType.Icon,
        MediaType.Cover,
        MediaType.Background,
        MediaType.Logo,
        MediaType.Manual
    };

    string[] ValidMimeTypes = new string[]
    {
        MediaTypeNames.Image.Png,
        MediaTypeNames.Image.Jpeg,
        MediaTypeNames.Image.Gif,
        MediaTypeNames.Application.Pdf,
        MediaTypeNames.Image.Icon
    };

    private async Task Update(Media media)
    {
        try
        {
            if (media.Id != Guid.Empty)
            {
                await MediaService.UpdateAsync(media);

                MessageService.Success($"{media.Type} updated!");
            }
        }
        catch (Exception ex)
        {
            MessageService.Error($"{media.Type} could not be updated.");
            Logger.LogError(ex, $"{media.Type} could not be updated.");
        }
    }

    private async Task AddMedia()
    {
        if (Values == null)
            Values = new List<Media>();

        try
        {
            var types = Enum.GetValues<MediaType>();
            var nextType = types.FirstOrDefault(t => !Values.Any(v => v.Type == t) && AllowedMediaTypes.Contains(t));
            
            var defaultStorageLocation = await MediaService.GetDefaultStorageLocationAsync();
            
            var media = new Media
            {
                GameId = GameId,
                Type = nextType == MediaType.Icon && Values.Any(v => v.Type == MediaType.Icon) ? MediaType.Manual : nextType,
                StorageLocationId = defaultStorageLocation.Id,
                Crc32 = String.Empty
            };

            media = await MediaService.AddAsync(media);

            Values.Add(await MediaService.GetAsync(media.Id));
        }
        catch (Exception ex)
        {
            MessageService.Error("Could not add new media!");
            Logger.LogError(ex, "Could not add new media!");
        }
    }

    private async Task SearchMedia(Media media)
    {
        var modalOptions = new ModalOptions()
        {
            Title = $"Download {media.Type}",
            Maximizable = false,
            DefaultMaximized = true,
            Closable = true,
            OkText = "Select",
        };

        var grabberOptions = new MediaGrabberOptions()
        {
            Type = media.Type,
            Search = GameTitle
        };

        var modalRef = await ModalService.CreateModalAsync<MediaGrabberDialog, MediaGrabberOptions, MediaGrabberResult>(modalOptions, grabberOptions);

        modalRef.OnOk = async (result) =>
        {
            modalRef.Config.ConfirmLoading = true;

            media.SourceUrl = result.SourceUrl;
            media.MimeType = result.MimeType; 
            
            if (media.Id == Guid.Empty)
            {
                media = await MediaService.DownloadMediaAsync(result.SourceUrl, media);

                await MediaService.AddAsync(media);
            }
            else
            {
                MediaService.DeleteLocalMediaFile(media);

                media = await MediaService.DownloadMediaAsync(result.SourceUrl, media);
            }

            Values = await MediaService.GetAsync(m => m.GameId == media.GameId);

            if (ValuesChanged.HasDelegate)
                await ValuesChanged.InvokeAsync(Values);
        };
    }

    private async Task UploadMedia(InputFileChangeEventArgs e, Media media)
    {
        if (!ValidMimeTypes.Contains(e.File.ContentType))
        {
            MessageService.Error("Unsupported file type");
            Logger.LogError($"Unsupported file type {e.File.ContentType}");
            return;
        }

        if ((e.File.Size / 1024 / 1024) > Settings.Media.MaxSize)
        {
            MessageService.Error($"File size must be smaller than {Settings.Media.MaxSize}MB");
            return;
        }

        media.SourceUrl = "";
        media.MimeType = e.File.ContentType;
        
        if (media.Id == Guid.Empty)
        {
            media = await MediaService.WriteToFileAsync(media, e.File.OpenReadStream(maxAllowedSize: Settings.Media.MaxSize * 1024 * 1024));

            await MediaService.AddAsync(media);
        }
        else
        {
            MediaService.DeleteLocalMediaFile(media);
            
            media = await MediaService.WriteToFileAsync(media, e.File.OpenReadStream(maxAllowedSize: Settings.Media.MaxSize * 1024 * 1024));
            
            await MediaService.UpdateAsync(media);
        }

        Values = await MediaService.GetAsync(m => m.GameId == media.GameId);

        if (ValuesChanged.HasDelegate)
            await ValuesChanged.InvokeAsync(Values);
    }

    private async Task DeleteAll()
    {
        if (!Selected.Any())
            return;

        Values = Values.Except(Selected).ToList();
        await MediaService.DeleteRangeAsync(Selected);

        Selected = [];
        ResultsTable.ReloadData();
    }

    private async Task RemoveMedia(Media media)
    {
        Values.Remove(media);
        
        if (media.Id != Guid.Empty)
            await MediaService.DeleteAsync(media);
    }

    private async Task OpenManual(Media media)
    {
        var modalOptions = new ModalOptions()
        {
            Title = media.Name,
            Maximizable = true,
            DefaultMaximized = true,
            Closable = true,
            Footer = null,
            Draggable = true,
            Resizable = true,
            WrapClassName = "pdf-reader-dialog",
        };

        var modalRef = await ModalService.CreateModalAsync<PdfReaderDialog, Media>(modalOptions, media);
    }

    private void NavigateToSettings()
    {
        NavigationManager.NavigateTo("/Settings/Media", true);
    }
}