fix: Remove NextAsync from FeedEnumerable (#221)

Fauna.Test/Integration.Tests.cs

@@ -549,7 +549,8 @@ public async Task CanOpenFeedWithQuery()
         Assert.IsNotEmpty(feed.Cursor, "should have a cursor");
         Assert.IsNull(feed.CurrentPage, "should not have loaded a page");
 
-        await feed.NextAsync();
+        await using IAsyncEnumerator<FeedPage<StreamingSandbox>> asyncEnumerator = feed.GetAsyncEnumerator();
+        await asyncEnumerator.MoveNextAsync();
 
         Assert.NotNull(feed.CurrentPage, "should have loaded a page");
         Assert.IsNotEmpty(feed.Cursor, "should have a cursor");
@@ -567,8 +568,8 @@ public async Task CanOpenFeedWithQuery()
             lastPage = page;
         }
 
-        // Get another page, should be empty
-        await feed.NextAsync();
+        await using IAsyncEnumerator<FeedPage<StreamingSandbox>> asyncEnumeratorAgain = feed.GetAsyncEnumerator();
+        await asyncEnumeratorAgain.MoveNextAsync();
 
         Assert.IsEmpty(feed.CurrentPage!.Events, "should not have any events");
         if (lastPage != null)
@@ -587,7 +588,8 @@ public async Task CanOpenFeedWithEventSource()
         var feed = await _client.EventFeedAsync<StreamingSandbox>(eventSource);
         Assert.IsNotNull(feed);
 
-        await feed.NextAsync();
+        await using IAsyncEnumerator<FeedPage<StreamingSandbox>> asyncEnumerator = feed.GetAsyncEnumerator();
+        await asyncEnumerator.MoveNextAsync();
 
         Assert.IsNotEmpty(feed.Cursor, "should have a cursor");
         Assert.IsEmpty(feed.CurrentPage!.Events, "should not have any events");

Fauna/Core/FeedEnumberable.cs → Fauna/Core/FeedEnumerable.cs

@@ -33,26 +33,6 @@ internal FeedEnumerable(
         _cancel = cancel;
     }
 
-    /// <summary>
-    /// Move to the next page of the Event Feed.
-    /// </summary>
-    /// <returns></returns>
-    public async Task<bool> NextAsync()
-    {
-        await using var subscribeFeed = _client.SubscribeFeed<T>(
-            _eventSource,
-            _client.MappingCtx,
-            _cancel);
-
-        bool result = await subscribeFeed.MoveNextAsync();
-        if (result)
-        {
-            CurrentPage = subscribeFeed.Current;
-        }
-
-        return result;
-    }
-
     /// <summary>
     /// Returns an enumerator that iterates through the Feed.
     /// </summary>

README.md

@@ -319,9 +319,8 @@ var feed = await client.EventFeedAsync<Person>(eventSource, feedOptions);
 var feedFromQuery = await client.EventFeedAsync<Person>(FQL($"Person.all().eventsOn({{ .price, .stock }})"), feedOptions);
 
 // EventFeedAsync() returns a `FeedEnumerable` instance that can act as an `AsyncEnumerator`.
-// Use `foreach()` or `NextAsync()` to iterate through the pages of events.
+// Use `foreach()` to iterate through the pages of events.
 
-// Example 1: Use `foreach()` to iterate through feed pages.
 await foreach (var page in feed)
 {
     foreach (var evt in page.Events)
@@ -332,24 +331,6 @@ await foreach (var page in feed)
     }
 }
 
-// Example 2: Use `NextAsync()` to manually iterate through feed pages.
-// `NextAsync()` requests the next page:
-await feed.NextAsync();
-
-if (feedFromQuery.CurrentPage != null && feedFromQuery.CurrentPage.Events.Any())
-{
-    foreach (var evt in feedFromQuery.CurrentPage.Events)
-    {
-        Console.WriteLine($"Event Type: {evt.Type}");
-        Person person = evt.Data;
-        Console.WriteLine($"First Name: {person.FirstName} - Last Name: {person.LastName} - Age: {person.Age}");
-    }
-}
-
-// Call `NextAsync()` again to fetch the next page:
-await feed.NextAsync();
-```
-
 ## Event Streaming
 
 The driver supports [Event Streaming](https://docs.fauna.com/fauna/current/learn/cdc/#event-streaming).