preview block playout in block editor (#1558)

* block editor cleanup

* preview block playout

* cleanup

ErsatzTV.Application/Playouts/Mapper.cs

@@ -22,7 +22,7 @@ internal static class Mapper
             programScheduleAlternate.DaysOfMonth,
             programScheduleAlternate.MonthsOfYear);
 
-    private static string GetDisplayTitle(PlayoutItem playoutItem)
+    internal static string GetDisplayTitle(PlayoutItem playoutItem)
     {
         switch (playoutItem.MediaItem)
         {
@@ -80,7 +80,7 @@ internal static class Mapper
         }
     }
 
-    private static string GetDisplayDuration(TimeSpan duration) =>
+    internal static string GetDisplayDuration(TimeSpan duration) =>
         string.Format(
             CultureInfo.InvariantCulture,
             duration.TotalHours >= 1 ? @"{0:h\:mm\:ss}" : @"{0:mm\:ss}",

ErsatzTV.Application/Scheduling/Commands/PreviewBlockPlayout.cs

@@ -0,0 +1,3 @@
+namespace ErsatzTV.Application.Scheduling;
+
+public record PreviewBlockPlayout(ReplaceBlockItems Data) : IRequest<List<PlayoutItemPreviewViewModel>>;

ErsatzTV.Application/Scheduling/Commands/PreviewBlockPlayoutHandler.cs

@@ -0,0 +1,118 @@
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Domain.Scheduling;
+using ErsatzTV.Core.Interfaces.Scheduling;
+using ErsatzTV.Core.Scheduling;
+using ErsatzTV.Infrastructure.Data;
+using ErsatzTV.Infrastructure.Extensions;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging.Abstractions;
+
+namespace ErsatzTV.Application.Scheduling;
+
+public class PreviewBlockPlayoutHandler(
+    IDbContextFactory<TvContext> dbContextFactory,
+    IBlockPlayoutBuilder blockPlayoutBuilder)
+    : IRequestHandler<PreviewBlockPlayout, List<PlayoutItemPreviewViewModel>>
+{
+    public async Task<List<PlayoutItemPreviewViewModel>> Handle(
+        PreviewBlockPlayout request,
+        CancellationToken cancellationToken)
+    {
+        await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken);
+
+        var template = new Template
+        {
+            Items = []
+        };
+
+        template.Items.Add(
+            new TemplateItem
+            {
+                Block = MapToBlock(request.Data),
+                StartTime = TimeSpan.Zero,
+                Template = template
+            });
+
+        var playout = new Playout
+        {
+            Channel = new Channel(Guid.NewGuid())
+            {
+                Number = "1",
+                Name = "Block Preview"
+            },
+            Items = [],
+            ProgramSchedulePlayoutType = ProgramSchedulePlayoutType.Block,
+            PlayoutHistory = [],
+            Templates =
+            [
+                new PlayoutTemplate
+                {
+                    DaysOfWeek = PlayoutTemplate.AllDaysOfWeek(),
+                    DaysOfMonth = PlayoutTemplate.AllDaysOfMonth(),
+                    MonthsOfYear = PlayoutTemplate.AllMonthsOfYear(),
+                    Template = template
+                }
+            ]
+        };
+
+        await blockPlayoutBuilder.Build(
+            playout,
+            PlayoutBuildMode.Reset,
+            NullLogger.Instance,
+            1,
+            randomizeStartPoints: true,
+            cancellationToken);
+
+        // load playout item details for title
+        foreach (PlayoutItem playoutItem in playout.Items)
+        {
+            Option<MediaItem> maybeMediaItem = await dbContext.MediaItems
+                .AsNoTracking()
+                .Include(mi => (mi as Movie).MovieMetadata)
+                .Include(mi => (mi as Movie).MediaVersions)
+                .Include(mi => (mi as MusicVideo).MusicVideoMetadata)
+                .Include(mi => (mi as MusicVideo).MediaVersions)
+                .Include(mi => (mi as MusicVideo).Artist)
+                .ThenInclude(mm => mm.ArtistMetadata)
+                .Include(mi => (mi as Episode).EpisodeMetadata)
+                .Include(mi => (mi as Episode).MediaVersions)
+                .Include(mi => (mi as Episode).Season)
+                .ThenInclude(s => s.SeasonMetadata)
+                .Include(mi => (mi as Episode).Season.Show)
+                .ThenInclude(s => s.ShowMetadata)
+                .Include(mi => (mi as OtherVideo).OtherVideoMetadata)
+                .Include(mi => (mi as OtherVideo).MediaVersions)
+                .Include(mi => (mi as Song).SongMetadata)
+                .Include(mi => (mi as Song).MediaVersions)
+                .SelectOneAsync(mi => mi.Id, mi => mi.Id == playoutItem.MediaItemId);
+
+            foreach (MediaItem mediaItem in maybeMediaItem)
+            {
+                playoutItem.MediaItem = mediaItem;
+            }
+        }
+
+        return playout.Items.Map(Mapper.ProjectToViewModel).ToList();
+    }
+
+    private static Block MapToBlock(ReplaceBlockItems request) =>
+        new()
+        {
+            Minutes = request.Minutes,
+            Name = request.Name,
+            Items = request.Items.Map(MapToBlockItem).ToList(),
+        };
+
+    private static BlockItem MapToBlockItem(int id, ReplaceBlockItem request) =>
+        new()
+        {
+            Id = id,
+            Index = request.Index,
+            CollectionType = request.CollectionType,
+            CollectionId = request.CollectionId,
+            MultiCollectionId = request.MultiCollectionId,
+            SmartCollectionId = request.SmartCollectionId,
+            MediaItemId = request.MediaItemId,
+            PlaybackOrder = request.PlaybackOrder
+        };
+}

ErsatzTV.Application/Scheduling/Mapper.cs

@@ -53,4 +53,11 @@ internal static class Mapper
             playoutTemplate.DaysOfWeek,
             playoutTemplate.DaysOfMonth,
             playoutTemplate.MonthsOfYear);
+
+    internal static PlayoutItemPreviewViewModel ProjectToViewModel(PlayoutItem playoutItem) =>
+        new(
+            Playouts.Mapper.GetDisplayTitle(playoutItem),
+            playoutItem.StartOffset.TimeOfDay,
+            playoutItem.FinishOffset.TimeOfDay,
+            Playouts.Mapper.GetDisplayDuration(playoutItem.FinishOffset - playoutItem.StartOffset));
 }

ErsatzTV.Application/Scheduling/PlayoutItemPreviewViewModel.cs

@@ -0,0 +1,3 @@
+namespace ErsatzTV.Application.Scheduling;
+
+public record PlayoutItemPreviewViewModel(string Title, TimeSpan Start, TimeSpan Finish, string Duration);

ErsatzTV.Core/Interfaces/Scheduling/IBlockPlayoutBuilder.cs

@@ -1,9 +1,18 @@
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Scheduling;
+using Microsoft.Extensions.Logging;
 
 namespace ErsatzTV.Core.Interfaces.Scheduling;
 
 public interface IBlockPlayoutBuilder
 {
     Task<Playout> Build(Playout playout, PlayoutBuildMode mode, CancellationToken cancellationToken);
+
+    Task<Playout> Build(
+        Playout playout,
+        PlayoutBuildMode mode,
+        ILogger customLogger,
+        int daysToBuild,
+        bool randomizeStartPoints,
+        CancellationToken cancellationToken);
 }

ErsatzTV.Core/Scheduling/BlockScheduling/BlockPlayoutBuilder.cs

@@ -19,7 +19,24 @@ public class BlockPlayoutBuilder(
 {
     public async Task<Playout> Build(Playout playout, PlayoutBuildMode mode, CancellationToken cancellationToken)
     {
-        logger.LogDebug(
+        int daysToBuild = await configElementRepository.GetValue<int>(ConfigElementKey.PlayoutDaysToBuild)
+            .IfNoneAsync(2);
+
+        return await Build(playout, mode, logger, daysToBuild, randomizeStartPoints: false, cancellationToken);
+    }
+
+    public async Task<Playout> Build(
+        Playout playout,
+        PlayoutBuildMode mode,
+        ILogger customLogger,
+        int daysToBuild,
+        bool randomizeStartPoints,
+        CancellationToken cancellationToken)
+    {
+        // ReSharper disable once LocalVariableHidesPrimaryConstructorParameter
+        ILogger log = customLogger ?? logger;
+
+        log.LogDebug(
             "Building block playout {PlayoutId} for channel {ChannelNumber} - {ChannelName}",
             playout.Id,
             playout.Channel.Number,
@@ -34,8 +51,6 @@ public class BlockPlayoutBuilder(
 
         DateTimeOffset start = DateTimeOffset.Now;
 
-        int daysToBuild = await configElementRepository.GetValue<int>(ConfigElementKey.PlayoutDaysToBuild)
-            .IfNoneAsync(2);
 
         // get blocks to schedule
         List<EffectiveBlock> blocksToSchedule = EffectiveBlock.GetEffectiveBlocks(playout, start, daysToBuild);
@@ -43,7 +58,8 @@ public class BlockPlayoutBuilder(
         // get all collection items for the playout
         Map<CollectionKey, List<MediaItem>> collectionMediaItems = await GetCollectionMediaItems(blocksToSchedule);
 
-        Dictionary<PlayoutItem, BlockKey> itemBlockKeys = BlockPlayoutChangeDetection.GetPlayoutItemToBlockKeyMap(playout);
+        Dictionary<PlayoutItem, BlockKey> itemBlockKeys =
+            BlockPlayoutChangeDetection.GetPlayoutItemToBlockKeyMap(playout);
 
         // remove items without a block key (shouldn't happen often, just upgrades)
         playout.Items.RemoveAll(i => !itemBlockKeys.ContainsKey(i));
@@ -64,14 +80,14 @@ public class BlockPlayoutBuilder(
             {
                 currentTime = effectiveBlock.Start;
 
-                logger.LogDebug(
+                log.LogDebug(
                     "Will schedule block {Block} at {Start}",
                     effectiveBlock.Block.Name,
                     effectiveBlock.Start);
             }
             else
             {
-                logger.LogDebug(
+                log.LogDebug(
                     "Will schedule block {Block} with start {Start} at {ActualStart}",
                     effectiveBlock.Block.Name,
                     effectiveBlock.Start,
@@ -90,7 +106,7 @@ public class BlockPlayoutBuilder(
 
                 if (currentTime >= blockFinish)
                 {
-                    logger.LogDebug(
+                    log.LogDebug(
                         "Current time {Time} for block {Block} is beyond block finish {Finish}; will stop with this block's items",
                         currentTime,
                         effectiveBlock.Block.Name,
@@ -129,7 +145,7 @@ public class BlockPlayoutBuilder(
                 // seek to the appropriate place in the collection enumerator
                 foreach (PlayoutHistory history in maybeHistory)
                 {
-                    logger.LogDebug("History is applicable: {When}: {History}", history.When, history.Details);
+                    log.LogDebug("History is applicable: {When}: {History}", history.When, history.Details);
 
                     HistoryDetails.MoveToNextItem(
                         collectionItems,
@@ -138,9 +154,19 @@ public class BlockPlayoutBuilder(
                         blockItem.PlaybackOrder);
                 }
 
+                if (maybeHistory.IsNone && randomizeStartPoints)
+                {
+                    enumerator.ResetState(
+                        new CollectionEnumeratorState
+                        {
+                            Seed = new Random().Next(),
+                            Index = new Random().Next(collectionItems.Count)
+                        });
+                }
+
                 foreach (MediaItem mediaItem in enumerator.Current)
                 {
-                    logger.LogDebug(
+                    log.LogDebug(
                         "current item: {Id} / {Title}",
                         mediaItem.Id,
                         mediaItem is Episode e ? GetTitle(e) : string.Empty);
@@ -223,7 +249,7 @@ public class BlockPlayoutBuilder(
             group.Add(history);
         }
 
-        foreach ((string key, List<PlayoutHistory> group) in groups)
+        foreach ((string _, List<PlayoutHistory> group) in groups)
         {
             //logger.LogDebug("History key {Key} has {Count} items in group", key, group.Count);
 

ErsatzTV/Pages/BlockEditor.razor

@@ -35,8 +35,20 @@
             </MudCardContent>
         </MudCard>
     </div>
+    <MudButton Variant="Variant.Filled" Color="Color.Default" OnClick="@(_ => AddBlockItem())" Class="mt-4">
+        Add Block Item
+    </MudButton>
+    <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="@(_ => SaveChanges())" Class="mt-4 ml-4">
+        Save Changes
+    </MudButton>
+    <MudButton Variant="Variant.Filled" Color="Color.Secondary" OnClick="@(_ => PreviewPlayout())" Class="mt-4 ml-4">
+        Preview Block Playout
+    </MudButton>
+    <MudGrid>
+        <MudItem xs="8">
             <MudTable Class="mt-6" Hover="true" Items="_block.Items.OrderBy(i => i.Index)" Dense="true" @bind-SelectedItem="_selectedItem">
                 <ColGroup>
+                    <col/>
                     <col/>
                     <col style="width: 60px;"/>
                     <col style="width: 60px;"/>
@@ -44,6 +56,7 @@
                 </ColGroup>
                 <HeaderContent>
                     <MudTh>Collection</MudTh>
+                    <MudTh>Playback Order</MudTh>
                     <MudTh/>
                     <MudTh/>
                     <MudTh/>
@@ -54,6 +67,11 @@
                             @context.CollectionName
                         </MudText>
                     </MudTd>
+                    <MudTd DataLabel="Playback Order">
+                        <MudText Typo="@(context == _selectedItem ? Typo.subtitle2 : Typo.body2)">
+                            @context.PlaybackOrder
+                        </MudText>
+                    </MudTd>
                     <MudTd>
                         <MudIconButton Icon="@Icons.Material.Filled.ArrowUpward"
                                        OnClick="@(_ => MoveItemUp(context))"
@@ -73,19 +91,14 @@
                     </MudTd>
                 </RowTemplate>
             </MudTable>
-    <MudButton Variant="Variant.Filled" Color="Color.Default" OnClick="@(_ => AddBlockItem())" Class="mt-4">
-        Add Block Item
-    </MudButton>
-    <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="@(_ => SaveChanges())" Class="mt-4 ml-4">
-        Save Changes
-    </MudButton>
-
+        </MudItem>
+    </MudGrid>
+    <div class="mt-4">
         @if (_selectedItem is not null)
         {
             <EditForm Model="_selectedItem">
                 <FluentValidationValidator/>
-            <div style="display: flex; flex-direction: row;" class="mt-6">
-                <div style="flex-grow: 1; max-width: 400px;" class="mr-6">
+                <div style="max-width: 400px;" class="mr-6">
                     <MudCard>
                         <MudCardContent>
                             <MudSelect Class="mt-3" Label="Collection Type" @bind-Value="_selectedItem.CollectionType" For="@(() => _selectedItem.CollectionType)">
@@ -108,6 +121,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             @if (_selectedItem.CollectionType == ProgramScheduleItemCollectionType.MultiCollection)
                             {
                                 <MudAutocomplete Class="mt-3" T="MultiCollectionViewModel" Label="Multi Collection"
@@ -120,6 +134,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             @if (_selectedItem.CollectionType == ProgramScheduleItemCollectionType.SmartCollection)
                             {
                                 <MudAutocomplete Class="mt-3" T="SmartCollectionViewModel" Label="Smart Collection"
@@ -132,6 +147,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             @if (_selectedItem.CollectionType == ProgramScheduleItemCollectionType.TelevisionShow)
                             {
                                 <MudAutocomplete Class="mt-3" T="NamedMediaItemViewModel" Label="Television Show"
@@ -144,6 +160,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             @if (_selectedItem.CollectionType == ProgramScheduleItemCollectionType.TelevisionSeason)
                             {
                                 <MudAutocomplete Class="mt-3" T="NamedMediaItemViewModel" Label="Television Season"
@@ -157,6 +174,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             @if (_selectedItem.CollectionType == ProgramScheduleItemCollectionType.Artist)
                             {
                                 <MudAutocomplete Class="mt-3" T="NamedMediaItemViewModel" Label="Artist"
@@ -170,6 +188,7 @@
                                     </MoreItemsTemplate>
                                 </MudAutocomplete>
                             }
+
                             <MudSelect Class="mt-3" Label="Playback Order" @bind-Value="@_selectedItem.PlaybackOrder" For="@(() => _selectedItem.PlaybackOrder)">
                                 @switch (_selectedItem.CollectionType)
                                 {
@@ -204,9 +223,32 @@
                         </MudCardContent>
                     </MudCard>
                 </div>
-            </div>
             </EditForm>
         }
+    </div>
+    @if (_previewItems != null)
+    {
+        <MudTable Class="mt-8"
+                  Hover="true"
+                  Dense="true"
+                  Items="_previewItems">
+            <ToolBarContent>
+                <MudText Typo="Typo.h6">Block Playout Preview</MudText>
+            </ToolBarContent>
+            <HeaderContent>
+                <MudTh>Start</MudTh>
+                <MudTh>Finish</MudTh>
+                <MudTh>Media Item</MudTh>
+                <MudTh>Duration</MudTh>
+            </HeaderContent>
+            <RowTemplate>
+                <MudTd DataLabel="Start">@context.Start.ToString(@"hh\:mm\:ss")</MudTd>
+                <MudTd DataLabel="Finish">@context.Finish.ToString(@"hh\:mm\:ss")</MudTd>
+                <MudTd DataLabel="Media Item">@context.Title</MudTd>
+                <MudTd DataLabel="Duration">@context.Duration</MudTd>
+            </RowTemplate>
+        </MudTable>
+    }
 </MudContainer>
 
 @code {
@@ -217,6 +259,7 @@
 
     private BlockItemsEditViewModel _block = new() { Items = [] };
     private BlockItemEditViewModel _selectedItem;
+    private List<PlayoutItemPreviewViewModel> _previewItems;
     private int _durationHours = 0;
     private int _durationMinutes = 15;
 
@@ -368,6 +411,21 @@
     }
 
     private async Task SaveChanges()
+    {
+        Seq<BaseError> errorMessages = await Mediator
+            .Send(GenerateReplaceRequest(), _cts.Token)
+            .Map(e => e.LeftToSeq());
+
+        errorMessages.HeadOrNone().Match(
+            error =>
+            {
+                Snackbar.Add($"Unexpected error saving block: {error.Value}", Severity.Error);
+                Logger.LogError("Unexpected error saving block: {Error}", error.Value);
+            },
+            () => NavigationManager.NavigateTo("/blocks"));
+    }
+
+    private ReplaceBlockItems GenerateReplaceRequest()
     {
         var items = _block.Items.Map(
             item => new ReplaceBlockItem(
@@ -381,16 +439,12 @@
 
         _block.Minutes = _durationHours * 60 + _durationMinutes;
 
-        Seq<BaseError> errorMessages = await Mediator
-            .Send(new ReplaceBlockItems(Id, _block.Name, _block.Minutes, items), _cts.Token)
-            .Map(e => e.LeftToSeq());
+        return new ReplaceBlockItems(Id, _block.Name, _block.Minutes, items);
+    }
 
-        errorMessages.HeadOrNone().Match(
-            error =>
+    private async Task PreviewPlayout()
     {
-                Snackbar.Add($"Unexpected error saving block: {error.Value}", Severity.Error);
-                Logger.LogError("Unexpected error saving block: {Error}", error.Value);
-            },
-            () => NavigationManager.NavigateTo("/blocks"));
+        _selectedItem = null;
+        _previewItems = await Mediator.Send(new PreviewBlockPlayout(GenerateReplaceRequest()), _cts.Token);
     }
 }