use full preferred language names in ui (#137)

ErsatzTV.Application/MediaItems/Queries/GetAllLanguageCodes.cs

@@ -0,0 +1,8 @@
+using System.Collections.Generic;
+using System.Globalization;
+using MediatR;
+
+namespace ErsatzTV.Application.MediaItems.Queries
+{
+    public record GetAllLanguageCodes : IRequest<List<CultureInfo>>;
+}

ErsatzTV.Application/MediaItems/Queries/GetAllLanguageCodesHandler.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.MediaItems.Queries
+{
+    public class GetAllLanguageCodesHandler : IRequestHandler<GetAllLanguageCodes, List<CultureInfo>>
+    {
+        private readonly IMediaItemRepository _mediaItemRepository;
+
+        public GetAllLanguageCodesHandler(IMediaItemRepository mediaItemRepository) =>
+            _mediaItemRepository = mediaItemRepository;
+
+        public async Task<List<CultureInfo>> Handle(GetAllLanguageCodes request, CancellationToken cancellationToken)
+        {
+            var result = new List<CultureInfo>();
+
+            CultureInfo[] allCultures = CultureInfo.GetCultures(CultureTypes.AllCultures);
+            List<string> allLanguageCodes = await _mediaItemRepository.GetAllLanguageCodes();
+            foreach (string code in allLanguageCodes)
+            {
+                Option<CultureInfo> maybeCulture = allCultures.Find(
+                    ci => string.Equals(code, ci.ThreeLetterISOLanguageName, StringComparison.OrdinalIgnoreCase));
+                await maybeCulture.IfSomeAsync(cultureInfo => result.Add(cultureInfo));
+            }
+
+            return result;
+        }
+    }
+}

ErsatzTV.Core/Interfaces/Repositories/IMediaItemRepository.cs

@@ -10,5 +10,6 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<Option<MediaItem>> Get(int id);
         Task<List<MediaItem>> GetAll();
         Task<bool> Update(MediaItem mediaItem);
+        Task<List<string>> GetAllLanguageCodes();
     }
 }

ErsatzTV.Infrastructure/Data/Repositories/MediaItemRepository.cs

@@ -1,6 +1,8 @@
 using System.Collections.Generic;
+using System.Data;
 using System.Linq;
 using System.Threading.Tasks;
+using Dapper;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Repositories;
 using LanguageExt;
@@ -11,10 +13,14 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
 {
     public class MediaItemRepository : IMediaItemRepository
     {
+        private readonly IDbConnection _dbConnection;
         private readonly IDbContextFactory<TvContext> _dbContextFactory;
 
-        public MediaItemRepository(IDbContextFactory<TvContext> dbContextFactory) =>
+        public MediaItemRepository(IDbContextFactory<TvContext> dbContextFactory, IDbConnection dbConnection)
+        {
             _dbContextFactory = dbContextFactory;
+            _dbConnection = dbConnection;
+        }
 
         public async Task<Option<MediaItem>> Get(int id)
         {
@@ -38,5 +44,16 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             context.MediaItems.Update(mediaItem);
             return await context.SaveChangesAsync() > 0;
         }
+
+        public Task<List<string>> GetAllLanguageCodes() =>
+            _dbConnection.QueryAsync<string>(
+                    @"SELECT LanguageCode FROM
+                    (SELECT Language AS LanguageCode
+                    FROM MediaStream WHERE Language IS NOT NULL
+                    UNION ALL SELECT PreferredLanguageCode AS LanguageCode
+                    FROM Channel WHERE PreferredLanguageCode IS NOT NULL)
+                    GROUP BY LanguageCode
+                    ORDER BY COUNT(LanguageCode) DESC")
+                .Map(result => result.ToList());
     }
 }

ErsatzTV/Pages/ChannelEditor.razor

@@ -4,6 +4,8 @@
 @using ErsatzTV.Application.FFmpegProfiles
 @using ErsatzTV.Application.FFmpegProfiles.Queries
 @using ErsatzTV.Application.Images.Commands
+@using ErsatzTV.Application.MediaItems.Queries
+@using System.Globalization
 @using ErsatzTV.Application.Channels
 @using ErsatzTV.Application.Channels.Queries
 @inject NavigationManager NavigationManager
@@ -34,7 +36,13 @@
                             <MudSelectItem Value="@profile.Id">@profile.Name</MudSelectItem>
                         }
                     </MudSelect>
-                    <MudTextField Class="mt-3" Label="Preferred Language Code" @bind-Value="_model.PreferredLanguageCode" For="@(() => _model.PreferredLanguageCode)"/>
+                    <MudSelect Class="mt-3" Label="Preferred Language" @bind-Value="_model.PreferredLanguageCode" For="@(() => _model.PreferredLanguageCode)">
+                        <MudSelectItem Value="@((string) null)">(none)</MudSelectItem>
+                        @foreach (CultureInfo culture in _availableCultures)
+                        {
+                            <MudSelectItem Value="@culture.ThreeLetterISOLanguageName">@culture.EnglishName</MudSelectItem>
+                        }
+                    </MudSelect>
                     <MudGrid Class="mt-3" Style="align-items: center" Justify="Justify.Center">
                         <MudItem xs="6">
                             <InputFile id="fileInput" OnChange="UploadLogo" hidden/>
@@ -74,10 +82,12 @@
     private ValidationMessageStore _messageStore;
 
     private List<FFmpegProfileViewModel> _ffmpegProfiles;
+    private List<CultureInfo> _availableCultures;
 
     protected override async Task OnParametersSetAsync()
     {
         await LoadFFmpegProfilesAsync();
+        _availableCultures = await Mediator.Send(new GetAllLanguageCodes());
 
         if (Id.HasValue)
         {

ErsatzTV/Pages/Channels.razor

@@ -4,6 +4,7 @@
 @using ErsatzTV.Application.Channels.Queries
 @using ErsatzTV.Application.FFmpegProfiles
 @using ErsatzTV.Application.FFmpegProfiles.Queries
+@using System.Globalization
 @inject IDialogService Dialog
 @inject IMediator Mediator
 
@@ -99,7 +100,25 @@
         }
     }
 
-    private async Task LoadChannelsAsync() => _channels = await Mediator.Send(new GetAllChannels())
-        .Map(list => list.OrderBy(c => decimal.Parse(c.Number)).ToList());
+    private async Task LoadChannelsAsync()
+    {
+        List<ChannelViewModel> channels = await Mediator.Send(new GetAllChannels());
+        IOrderedEnumerable<ChannelViewModel> sorted = channels.OrderBy(c => decimal.Parse(c.Number));
+
+        CultureInfo[] allCultures = CultureInfo.GetCultures(CultureTypes.NeutralCultures);
+        _channels = new List<ChannelViewModel>();
+        foreach (ChannelViewModel channel in sorted)
+        {
+            Option<CultureInfo> maybeCultureInfo = allCultures.Find(
+                ci => string.Equals(
+                    ci.ThreeLetterISOLanguageName,
+                    channel.PreferredLanguageCode,
+                    StringComparison.OrdinalIgnoreCase));
+
+            maybeCultureInfo.Match(
+                cultureInfo => _channels.Add(channel with { PreferredLanguageCode = cultureInfo.EnglishName }),
+                () => _channels.Add(channel));
+        }
+    }
 
 }

ErsatzTV/Pages/FFmpeg.razor

@@ -2,8 +2,9 @@
 @using ErsatzTV.Application.FFmpegProfiles
 @using ErsatzTV.Application.FFmpegProfiles.Commands
 @using ErsatzTV.Application.FFmpegProfiles.Queries
-@using Unit = LanguageExt.Unit
+@using ErsatzTV.Application.MediaItems.Queries
 @using System.Globalization
+@using Unit = LanguageExt.Unit
 @inject IDialogService Dialog
 @inject IMediator Mediator
 @inject ILogger<FFmpeg> Logger
@@ -30,9 +31,12 @@
                         }
                     </MudSelect>
                 </MudElement>
-                <MudElement HtmlTag="div" Class="mt-3">
-                    <MudTextField T="string" Label="Preferred Language Code" @bind-Value="_ffmpegSettings.PreferredLanguageCode" Validation="@(new Func<string, string>(ValidateLanguageCode))" Required="true" RequiredError="Preferred Language Code is required!"/>
-                </MudElement>
+                <MudSelect Class="mt-3" Label="Preferred Language" @bind-Value="_ffmpegSettings.PreferredLanguageCode" For="@(() => _ffmpegSettings.PreferredLanguageCode)" Required="true" RequiredError="Preferred Language Code is required!">
+                    @foreach (CultureInfo culture in _availableCultures)
+                    {
+                        <MudSelectItem Value="@culture.ThreeLetterISOLanguageName">@culture.EnglishName</MudSelectItem>
+                    }
+                </MudSelect>
                 <MudElement HtmlTag="div" Class="mt-3">
                     <MudSwitch T="bool"
                                Label="Save troubleshooting reports to disk"
@@ -115,12 +119,14 @@
     private FFmpegSettingsViewModel _ffmpegSettings;
 
     private List<FFmpegProfileViewModel> _ffmpegProfiles;
+    private List<CultureInfo> _availableCultures;
 
     protected override async Task OnParametersSetAsync()
     {
         _ffmpegSettings = await Mediator.Send(new GetFFmpegSettings());
         _success = File.Exists(_ffmpegSettings.FFmpegPath) && File.Exists(_ffmpegSettings.FFprobePath);
         await LoadFFmpegProfilesAsync();
+        _availableCultures = await Mediator.Send(new GetAllLanguageCodes());
     }
 
     private async Task SaveSettings()
@@ -137,19 +143,6 @@
 
     private static string ValidatePathExists(string path) => !File.Exists(path) ? "Path does not exist" : null;
 
-    private static string ValidateLanguageCode(string languageCode)
-    {
-        if (string.IsNullOrWhiteSpace(languageCode))
-        {
-            return null;
-        }
-
-        Option<CultureInfo> culture = CultureInfo.GetCultures(CultureTypes.NeutralCultures)
-            .FirstOrDefault(ci => string.Equals(ci.ThreeLetterISOLanguageName, languageCode, StringComparison.OrdinalIgnoreCase));
-
-        return culture.IsNone ? "Preferred language code is invalid" : null;
-    }
-
     private async Task LoadFFmpegProfilesAsync() =>
         _ffmpegProfiles = await Mediator.Send(new GetAllFFmpegProfiles());