ResolvedUnfurledMediaItem + fix missing accessory on sections

src/Discord.Net.Core/Entities/Interactions/MessageComponents/ResolvedUnfurledMediaItem.cs

@@ -0,0 +1,23 @@
+namespace Discord;
+
+public class ResolvedUnfurledMediaItem : UnfurledMediaItem
+{
+    public string ProxyUrl { get; }
+
+    public int Height { get; }
+
+    public int Width { get; }
+
+    public string ContentType { get;}
+
+    public UnfurledMediaItemLoadingState LoadingState { get; }
+
+    internal ResolvedUnfurledMediaItem(string url, string proxyUrl, int height, int width, string contentType, UnfurledMediaItemLoadingState loadingState) : base(url)
+    {
+        ProxyUrl = proxyUrl;
+        Height = height;
+        Width = width;
+        ContentType = contentType;
+        LoadingState = loadingState;
+    }
+}

src/Discord.Net.Core/Entities/Interactions/MessageComponents/UnfurledMediaItem.cs

@@ -1,6 +1,6 @@
 namespace Discord;
 
-public readonly struct UnfurledMediaItem
+public class UnfurledMediaItem
 {
     public string Url { get; }
 

src/Discord.Net.Core/Entities/Interactions/MessageComponents/UnfurledMediaItemLoadingState.cs

@@ -0,0 +1,24 @@
+namespace Discord;
+
+public enum UnfurledMediaItemLoadingState
+{
+    /// <summary>
+    ///     The state of the media item is unknown.
+    /// </summary>
+    Unknown = 0,
+
+    /// <summary>
+    ///     The media item is currently loading.
+    /// </summary>
+    Loading = 1,
+
+    /// <summary>
+    ///     The media item was successfully loaded.
+    /// </summary>
+    LoadingSuccess = 2,
+
+    /// <summary>
+    ///     The media item was not found.
+    /// </summary>
+    LoadingNotFound = 3
+}

src/Discord.Net.Rest/API/Common/ThumbnailComponent.cs

@@ -1,3 +1,4 @@
+using Discord.Rest;
 using Newtonsoft.Json;
 
 namespace Discord.API;
@@ -25,7 +26,7 @@ public ThumbnailComponent(Discord.ThumbnailComponent component)
     {
         Type = component.Type;
         Id = component.Id ?? Optional<int>.Unspecified;
-        Media = new UnfurledMediaItem { Url = component.Media.Url };
+        Media = component.Media.ToModel();
         Description = component.Description;
         IsSpoiler = component.IsSpoiler;
     }

src/Discord.Net.Rest/API/Common/UnfurledMediaItem.cs

@@ -2,8 +2,23 @@
 
 namespace Discord.API;
 
-public class UnfurledMediaItem
+internal class UnfurledMediaItem
 {
     [JsonProperty("url")]
     public string Url { get; set; }
+
+    [JsonProperty("proxy_url")]
+    public Optional<string> ProxyUrl { get; set; }
+
+    [JsonProperty("height")]
+    public Optional<int> Height { get; set; }
+
+    [JsonProperty("width")]
+    public Optional<int> Width { get; set; }
+
+    [JsonProperty("content_type")]
+    public Optional<string> ContentType { get; set; }
+
+    [JsonProperty("loading_state")]
+    public Optional<UnfurledMediaItemLoadingState> LoadingState { get; set; }
 }

src/Discord.Net.Rest/Extensions/MessageComponentExtension.cs

@@ -129,13 +129,18 @@ internal static IMessageComponent ToEntity(this IMessageComponent component)
             case ComponentType.Section:
             {
                 var parsed = (API.SectionComponent)component;
-                return new SectionComponent(parsed.Id.ToNullable(), parsed.Components.Select(x => x.ToEntity()).ToImmutableArray(), parsed.Accessory.ToModel());
+                return new SectionComponent(parsed.Id.ToNullable(),
+                    parsed.Components.Select(x => x.ToEntity()).ToImmutableArray(),
+                    parsed.Accessory.ToEntity());
             }
 
             case ComponentType.Thumbnail:
             {
                 var parsed = (API.ThumbnailComponent)component;
-                return new ThumbnailComponent(parsed.Id.ToNullable(), parsed.Media.ToEntity(), parsed.Description.GetValueOrDefault(null), parsed.IsSpoiler.ToNullable());
+                return new ThumbnailComponent(parsed.Id.ToNullable(),
+                    parsed.Media.ToEntity(),
+                    parsed.Description.GetValueOrDefault(null),
+                    parsed.IsSpoiler.ToNullable());
             }
 
             case ComponentType.MediaGallery:
@@ -175,8 +180,14 @@ internal static IMessageComponent ToEntity(this IMessageComponent component)
 
     internal static UnfurledMediaItem ToEntity(this API.UnfurledMediaItem mediaItem)
     {
-        return new UnfurledMediaItem(mediaItem.Url);
+        return new ResolvedUnfurledMediaItem(mediaItem.Url,
+            mediaItem.ProxyUrl.Value,
+            mediaItem.Height.Value,
+            mediaItem.Width.Value,
+            mediaItem.ContentType.Value,
+            mediaItem.LoadingState.Value);
     }
+
     internal static API.UnfurledMediaItem ToModel(this UnfurledMediaItem mediaItem)
     {
         return new API.UnfurledMediaItem