Address review comments

Store null instead of calculating scaled image sizes.
Add endpoint to provide TMDb image size options.

4 files changed, 104 insertions, 88 deletions

diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Api/TmdbController.cs b/MediaBrowser.Providers/Plugins/Tmdb/Api/TmdbController.cs
new file mode 100644
index 000000000..0bab7c3ca
--- /dev/null
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Api/TmdbController.cs
@@ -0,0 +1,41 @@
+using System.Net.Mime;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using TMDbLib.Objects.General;
+
+namespace MediaBrowser.Providers.Plugins.Tmdb.Api
+{
+    /// <summary>
+    /// The TMDb api controller.
+    /// </summary>
+    [ApiController]
+    [Authorize(Policy = "DefaultAuthorization")]
+    [Route("[controller]")]
+    [Produces(MediaTypeNames.Application.Json)]
+    public class TmdbController : ControllerBase
+    {
+        private readonly TmdbClientManager _tmdbClientManager;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TmdbController"/> class.
+        /// </summary>
+        /// <param name="tmdbClientManager">The TMDb client manager.</param>
+        public TmdbController(TmdbClientManager tmdbClientManager)
+        {
+            _tmdbClientManager = tmdbClientManager;
+        }
+
+        /// <summary>
+        /// Gets the TMDb image configuration options.
+        /// </summary>
+        /// <returns>The image portion of the TMDb client configuration.</returns>
+        [HttpGet("ClientConfiguration")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public async Task<ConfigImageTypes> TmdbClientConfiguration()
+        {
+            return (await _tmdbClientManager.GetClientConfiguration().ConfigureAwait(false)).Images;
+        }
+    }
+}
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Configuration/PluginConfiguration.cs b/MediaBrowser.Providers/Plugins/Tmdb/Configuration/PluginConfiguration.cs
index b043da76c..dec796148 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Configuration/PluginConfiguration.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Configuration/PluginConfiguration.cs
@@ -1,4 +1,3 @@
-using System.Collections.Generic;
 using MediaBrowser.Model.Plugins;
 
 namespace MediaBrowser.Providers.Plugins.Tmdb
@@ -34,38 +33,18 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
         public string? PosterSize { get; set; }
 
         /// <summary>
-        /// Gets or sets the available options for poster size.
-        /// </summary>
-        public List<string> PosterSizeOptions { get; set; } = new List<string>();
-
-        /// <summary>
         /// Gets or sets a value indicating the backdrop image size to fetch.
         /// </summary>
         public string? BackdropSize { get; set; }
 
         /// <summary>
-        /// Gets or sets the available options for backdrop size.
-        /// </summary>
-        public List<string> BackdropSizeOptions { get; set; } = new List<string>();
-
-        /// <summary>
         /// Gets or sets a value indicating the profile image size to fetch.
         /// </summary>
         public string? ProfileSize { get; set; }
 
         /// <summary>
-        /// Gets or sets the available options for profile size.
-        /// </summary>
-        public List<string> ProfileSizeOptions { get; set; } = new List<string>();
-
-        /// <summary>
         /// Gets or sets a value indicating the still image size to fetch.
         /// </summary>
         public string? StillSize { get; set; }
-
-        /// <summary>
-        /// Gets or sets the available options for still size.
-        /// </summary>
-        public List<string> StillSizeOptions { get; set; } = new List<string>();
     }
 }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Configuration/config.html b/MediaBrowser.Providers/Plugins/Tmdb/Configuration/config.html
index d376df96c..52693795b 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Configuration/config.html
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Configuration/config.html
@@ -26,7 +26,6 @@
                     </div>
                     <div class="verticalSection verticalSection-extrabottompadding">
                         <h2>Image Scaling</h2>
-                        <p>If size options are not populated then refresh metadata for any item from TMDb and reload this page.</p>
                         <div class="selectContainer">
                             <select is="emby-select" id="selectPosterSize" label="Poster"></select>
                         </div>
@@ -54,39 +53,61 @@
             document.querySelector('.configPage')
                 .addEventListener('pageshow', function () {
                     Dashboard.showLoadingMsg();
-                    ApiClient.getPluginConfiguration(PluginConfig.pluginId).then(function (config) {
-                        document.querySelector('#includeAdult').checked = config.IncludeAdult;
-                        document.querySelector('#excludeTagsSeries').checked = config.ExcludeTagsSeries;
-                        document.querySelector('#excludeTagsMovies').checked = config.ExcludeTagsMovies;
 
-                        var maxCastMembers = document.querySelector('#maxCastMembers');
-                        maxCastMembers.value = config.MaxCastMembers;
-                        maxCastMembers.dispatchEvent(new Event('change', {
-                            bubbles: true,
-                            cancelable: false
-                        }));
+                    var clientConfig, pluginConfig;
+                    var configureImageScaling = function() {
+                        if (clientConfig === null || pluginConfig === null) {
+                            return;
+                        }
 
                         var sizeOptionsGenerator = function (size) {
                             return '<option value="' + size + '">' + size + '</option>';
                         }
 
                         var selPosterSize = document.querySelector('#selectPosterSize');
-                        selPosterSize.innerHTML = config.PosterSizeOptions.map(sizeOptionsGenerator);
-                        selPosterSize.value = config.PosterSize;
+                        selPosterSize.innerHTML = clientConfig.PosterSizes.map(sizeOptionsGenerator);
+                        selPosterSize.value = pluginConfig.PosterSize;
 
                         var selBackdropSize = document.querySelector('#selectBackdropSize');
-                        selBackdropSize.innerHTML = config.BackdropSizeOptions.map(sizeOptionsGenerator);
-                        selBackdropSize.value = config.BackdropSize;
+                        selBackdropSize.innerHTML = clientConfig.BackdropSizes.map(sizeOptionsGenerator);
+                        selBackdropSize.value = pluginConfig.BackdropSize;
 
                         var selProfileSize = document.querySelector('#selectProfileSize');
-                        selProfileSize.innerHTML = config.ProfileSizeOptions.map(sizeOptionsGenerator);
-                        selProfileSize.value = config.ProfileSize;
+                        selProfileSize.innerHTML = clientConfig.ProfileSizes.map(sizeOptionsGenerator);
+                        selProfileSize.value = pluginConfig.ProfileSize;
 
                         var selStillSize = document.querySelector('#selectStillSize');
-                        selStillSize.innerHTML = config.StillSizeOptions.map(sizeOptionsGenerator);
-                        selStillSize.value = config.StillSize;
+                        selStillSize.innerHTML = clientConfig.StillSizes.map(sizeOptionsGenerator);
+                        selStillSize.value = pluginConfig.StillSize;
 
                         Dashboard.hideLoadingMsg();
+                    }
+
+                    const request = {
+                        url: ApiClient.getUrl('tmdb/ClientConfiguration'),
+                        dataType: 'json',
+                        type: 'GET',
+                        headers: { accept: 'application/json' }
+                    }
+                    ApiClient.fetch(request).then(function (config) {
+                        clientConfig = config;
+                        configureImageScaling();
+                    });
+
+                    ApiClient.getPluginConfiguration(PluginConfig.pluginId).then(function (config) {
+                        document.querySelector('#includeAdult').checked = config.IncludeAdult;
+                        document.querySelector('#excludeTagsSeries').checked = config.ExcludeTagsSeries;
+                        document.querySelector('#excludeTagsMovies').checked = config.ExcludeTagsMovies;
+
+                        var maxCastMembers = document.querySelector('#maxCastMembers');
+                        maxCastMembers.value = config.MaxCastMembers;
+                        maxCastMembers.dispatchEvent(new Event('change', {
+                            bubbles: true,
+                            cancelable: false
+                        }));
+
+                        pluginConfig = config;
+                        configureImageScaling();
                     });
                 });
 
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
index c082a6cc4..9a3af1f4a 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
@@ -3,7 +3,6 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
-using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Model.Dto;
@@ -576,51 +575,20 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
         /// <param name="results">The collection to add the remote images into.</param>
         private void ConvertToRemoteImageInfo(List<ImageData> images, string size, ImageType type, string requestLanguage, List<RemoteImageInfo> results)
         {
-            int? targetHeight = null;
-            int? targetWidth = null;
-            var match = Regex.Match(size, @"(?<dimension>[hw])(?<size>[0-9]+)");
-            if (match.Success)
-            {
-                var targetSize = int.Parse(match.Groups["size"].Value, NumberStyles.Integer, CultureInfo.InvariantCulture);
-                if (string.Equals(match.Groups["dimension"].Value, "h", StringComparison.OrdinalIgnoreCase))
-                {
-                    targetHeight = targetSize;
-                }
-                else
-                {
-                    targetWidth = targetSize;
-                }
-            }
+            // sizes provided are for original resolution, don't store them when downloading scaled images
+            var scaleImage = !string.Equals(size, "original", StringComparison.OrdinalIgnoreCase);
 
             for (var i = 0; i < images.Count; i++)
             {
                 var image = images[i];
 
-                int width;
-                int height;
-                if (targetHeight.HasValue)
-                {
-                    width = (int)Math.Round((double)targetHeight.Value / image.Height * image.Width);
-                    height = targetHeight.Value;
-                }
-                else if (targetWidth.HasValue)
-                {
-                    height = (int)Math.Round((double)targetWidth.Value / image.Width * image.Height);
-                    width = targetWidth.Value;
-                }
-                else
-                {
-                    width = image.Width;
-                    height = image.Height;
-                }
-
                 results.Add(new RemoteImageInfo
                 {
                     Url = GetUrl(size, image.FilePath),
                     CommunityRating = image.VoteAverage,
                     VoteCount = image.VoteCount,
-                    Width = width,
-                    Height = height,
+                    Width = scaleImage ? null : image.Width,
+                    Height = scaleImage ? null : image.Height,
                     Language = TmdbUtils.AdjustImageLanguage(image.Iso_639_1, requestLanguage),
                     ProviderName = TmdbUtils.ProviderName,
                     Type = type,
@@ -644,31 +612,38 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
 
             var pluginConfig = Plugin.Instance.Configuration;
 
-            pluginConfig.PosterSizeOptions = imageConfig.PosterSizes;
-            if (!pluginConfig.PosterSizeOptions.Contains(pluginConfig.PosterSize))
+            if (!imageConfig.PosterSizes.Contains(pluginConfig.PosterSize))
             {
-                pluginConfig.PosterSize = pluginConfig.PosterSizeOptions[^1];
+                pluginConfig.PosterSize = imageConfig.PosterSizes[^1];
             }
 
-            pluginConfig.BackdropSizeOptions = imageConfig.BackdropSizes;
-            if (!pluginConfig.BackdropSizeOptions.Contains(pluginConfig.BackdropSize))
+            if (!imageConfig.BackdropSizes.Contains(pluginConfig.BackdropSize))
             {
-                pluginConfig.BackdropSize = pluginConfig.BackdropSizeOptions[^1];
+                pluginConfig.BackdropSize = imageConfig.BackdropSizes[^1];
             }
 
-            pluginConfig.ProfileSizeOptions = imageConfig.ProfileSizes;
-            if (!pluginConfig.ProfileSizeOptions.Contains(pluginConfig.ProfileSize))
+            if (!imageConfig.ProfileSizes.Contains(pluginConfig.ProfileSize))
             {
-                pluginConfig.ProfileSize = pluginConfig.ProfileSizeOptions[^1];
+                pluginConfig.ProfileSize = imageConfig.ProfileSizes[^1];
             }
 
-            pluginConfig.StillSizeOptions = imageConfig.StillSizes;
-            if (!pluginConfig.StillSizeOptions.Contains(pluginConfig.StillSize))
+            if (!imageConfig.StillSizes.Contains(pluginConfig.StillSize))
             {
-                pluginConfig.StillSize = pluginConfig.StillSizeOptions[^1];
+                pluginConfig.StillSize = imageConfig.StillSizes[^1];
             }
         }
 
+        /// <summary>
+        /// Gets the <see cref="TMDbClient"/> configuration.
+        /// </summary>
+        /// <returns>The configuration.</returns>
+        public async Task<TMDbConfig> GetClientConfiguration()
+        {
+            await EnsureClientConfigAsync().ConfigureAwait(false);
+
+            return _tmDbClient.Config;
+        }
+
         /// <inheritdoc />
         public void Dispose()
         {