Add Availability to BeatmapSetOnlineInfo

osu.Game/Beatmaps/BeatmapSetOnlineInfo.cs

@@ -65,6 +65,11 @@ namespace osu.Game.Beatmaps
         /// The amount of people who have favourited this beatmap set.
         /// </summary>
         public int FavouriteCount { get; set; }
+
+        /// <summary>
+        /// The availability of this beatmap set.
+        /// </summary>
+        public BeatmapSetOnlineAvailability Availability { get; set; }
     }
 
     public class BeatmapSetOnlineCovers
@@ -84,4 +89,13 @@ namespace osu.Game.Beatmaps
         [JsonProperty(@"list@2x")]
         public string List { get; set; }
     }
+
+    public class BeatmapSetOnlineAvailability
+    {
+        [JsonProperty(@"download_disabled")]
+        public bool DownloadDisabled { get; set; }
+
+        [JsonProperty(@"more_information")]
+        public string ExternalLink { get; set; }
+    }
 }

osu.Game/Online/API/Requests/Responses/APIBeatmapSet.cs

@@ -60,6 +60,12 @@ namespace osu.Game.Online.API.Requests.Responses
             set => Author.Id = value;
         }
 
+        [JsonProperty(@"availability")]
+        private BeatmapSetOnlineAvailability availability { get; set; }
+
+        [JsonProperty(@"download_unavailable")]
+        private bool test { get; set; }
+
         [JsonProperty(@"beatmaps")]
         private IEnumerable<APIBeatmap> beatmaps { get; set; }
 
@@ -83,6 +89,7 @@ namespace osu.Game.Online.API.Requests.Responses
                     Submitted = submitted,
                     Ranked = ranked,
                     LastUpdated = lastUpdated,
+                    Availability = availability,
                 },
                 Beatmaps = beatmaps?.Select(b => b.ToBeatmap(rulesets)).ToList(),
             };