Add isolated question completion credits

api/QuestionsApi/Controllers/QuestionsController.cs

@@ -19,6 +19,7 @@ public class QuestionsController : ControllerBase
     private readonly ServiceMetrics _metrics;
     private readonly QuestionBookmarkStore _bookmarks;
     private readonly ReviewQueueStore _reviewQueue;
+    private readonly CreditStore _credits;
 
     public QuestionsController(
         QuestionStore questions,
@@ -28,7 +29,8 @@ public class QuestionsController : ControllerBase
         AnswerStatisticsStore statistics,
         ServiceMetrics metrics,
         QuestionBookmarkStore bookmarks,
-        ReviewQueueStore reviewQueue)
+        ReviewQueueStore reviewQueue,
+        CreditStore credits)
     {
         _questions = questions;
         _attempts = attempts;
@@ -38,6 +40,7 @@ public class QuestionsController : ControllerBase
         _metrics = metrics;
         _bookmarks = bookmarks;
         _reviewQueue = reviewQueue;
+        _credits = credits;
     }
 
     [HttpGet("systems")]
@@ -172,6 +175,8 @@ public class QuestionsController : ControllerBase
             _metrics.AttemptDuplicate();
         }
         await _reviewQueue.AddFromFirstAttemptAsync(record.Attempt);
+        if (record.Inserted && !User.IsInRole("SUPER"))
+            await _credits.AwardForFirstAnswerAsync(userId, record.Attempt.Id ?? "");
 
         var ratingOwner = Guid.NewGuid().ToString("N");
         var shouldRate = await _attempts.TryAcquireRatingLeaseAsync(
@@ -204,7 +209,8 @@ public class QuestionsController : ControllerBase
                 question,
                 await _statistics.GetPercentagesForQuestionAsync(question.ExternalId)),
             QuestionElo = rating.QuestionElo,
-            Rating = rating
+            Rating = rating,
+            Credits = await _credits.GetStatusAsync(userId)
         });
     }