finalized api answer data structure from api documentation

fixed UpdateMedia method to use correct fields from poi

Assets/RothenburgAR/Scripts/Updater/ApiInfo.cs

@@ -110,6 +110,9 @@ namespace RothenburgAR.Updater
         [JsonProperty("imageId")]
         public string ImageId { get; set; }
 
+        [JsonProperty("mediaId")]
+        public string MediaId { get; set; }
+
         [JsonProperty("x")]
         public double X { get; set; }
 

Assets/RothenburgAR/Scripts/Updater/UpdaterBehaviour.cs

@@ -94,8 +94,7 @@ namespace RothenburgAR.Updater
                 }
             });
 
-            result = result.Substring(0, result.Length - 1);
-            result += "}";
+            result = result.Substring(0, result.Length - 1) + "}";
             return result;
         }
 
@@ -178,16 +177,9 @@ namespace RothenburgAR.Updater
 
         private void UpdateMedia(Exhibit exhibit)
         {
-            //TODO implement feedback: which id is the right one?
-            // ImageId is apparently just the ExhibitId
-            // Exhibit doesn't have media, POI does. so the Exhibit.MediaId doesn't make sense
-            //exhibit.MediaId;
-            //exhibit.Pois[0].ImageId;
-
             //TODO check existing file for creation/alteration date to see if download is necessary
 
-            var mediaIDs = new List<string> { exhibit.MediaId };
-            //var mediaIDs = exhibit.Pois.Select(p => p.ImageId).ToList();
+            var mediaIDs = exhibit.Pois.Select(p => p.MediaId).ToList();
 
             foreach (var mediaId in mediaIDs)
             {