Fix exception when Vimeo client requests more pages then channel has

src/Podsync/Services/Videos/Vimeo/VimeoClient.cs

@@ -79,7 +79,11 @@ namespace Podsync.Services.Videos.Vimeo
             {
                 var pageSize = Math.Min(count, MaxPageSize);
 
-                await GetPage(path, pageIndex, pageSize, collection);
+                var isLast = await GetPage(path, pageIndex, pageSize, collection);
+                if (isLast)
+                {
+                    break;
+                }
 
                 count -= pageSize;
                 pageIndex++;
@@ -88,7 +92,7 @@ namespace Podsync.Services.Videos.Vimeo
             return collection;
         }
 
-        private async Task GetPage(string path, int pageIndex, int pageSize, List<Video> output)
+        private async Task<bool> GetPage(string path, int pageIndex, int pageSize, List<Video> output)
         {
             dynamic resp = await QueryApi($"{path}?per_page={pageSize}&page={pageIndex}");
 
@@ -120,6 +124,9 @@ namespace Podsync.Services.Videos.Vimeo
 
                 output.Add(video);
             }
+
+            // Is last page?
+            return string.IsNullOrEmpty(resp.paging?.next?.ToString());
         }
 
         private async Task<Group> QueryGroup(string path)

test/Podsync.Tests/Services/Videos/Vimeo/VimeoClientTests.cs

@@ -57,6 +57,12 @@ namespace Podsync.Tests.Services.Videos.Vimeo
             ValidateCollection(videos);
         }
 
+        [Fact]
+        public Task PaginationTest()
+        {
+            return _client.GroupVideos("scifilondon48hr2012", 300);
+        }
+
         [Fact]
         public async Task UserVideosTest()
         {