Handle deleting existing answers from Index before adding new answer

Author: mythz

MyApp.ServiceInterface/BackgroundMqServices.cs

@@ -108,7 +108,7 @@ public async Task Any(DbWrites request)
                     };
                     await Db.InsertAsync(rankJob);
                     modelWorkers.Enqueue(rankJob);
-                    MessageProducer.Publish(new SearchTasks { AddPostId = postJob.PostId });
+                    MessageProducer.Publish(new SearchTasks { AddPostToIndex = postJob.PostId });
                 }
             }
         }

MyApp.ServiceInterface/SearchServices.cs

@@ -11,9 +11,9 @@ public class SearchServices(ILogger<SearchServices> log, QuestionsProvider quest
 {
     public async Task Any(SearchTasks request)
     {
-        if (request.AddPostId != null)
+        if (request.AddPostToIndex != null)
         {
-            var id = request.AddPostId.Value;
+            var id = request.AddPostToIndex.Value;
             var questionFiles = await questions.GetQuestionAsync(id);
 
             log.LogInformation("Adding Post '{PostId}' Question and {AnswerCount} to Search Index...", 
@@ -65,16 +65,18 @@ await db.ExecuteNonQueryAsync($@"INSERT INTO {nameof(PostFts)} (
                         var userName = fileType.Substring(2); 
                         log.LogDebug("Adding Human Answer {FilePath}", file.VirtualPath);
                         var modifiedDate = post.LastEditDate ?? (post.CreationDate > minDate ? post.CreationDate : minDate);
-                        db.ExecuteNonQuery($@"INSERT INTO {nameof(PostFts)} (
+                        var refId = $"{id}-{userName}";
+                        await db.ExecuteNonQueryAsync($"DELETE FROM {nameof(PostFts)} where {nameof(PostFts.RefId)} = {QuotedValue(refId)}");
+                        await db.ExecuteNonQueryAsync($@"INSERT INTO {nameof(PostFts)} (
                             rowid,
                             {nameof(PostFts.RefId)},
                             {nameof(PostFts.UserName)},
                             {nameof(PostFts.Body)},
                             {nameof(PostFts.ModifiedDate)}
                         ) VALUES (
                             {post.Id},
-                            '{id}-{userName}',
-                            '{userName}',
+                            {QuotedValue(refId)},
+                            {QuotedValue(userName)},
                             {QuotedValue(post.Body)},
                             {QuotedValue(modifiedDate.ToString("yyyy-MM-dd HH:mm:ss"))}
                         )");
@@ -92,6 +94,8 @@ await db.ExecuteNonQueryAsync($@"INSERT INTO {nameof(PostFts)} (
                             ? DateTimeOffset.FromUnixTimeSeconds(created).DateTime
                             : file.LastModified;
                         log.LogDebug("Adding Model Answer {FilePath} {UserName}", file.VirtualPath, userName);
+                        var refId = $"{id}-{userName}";
+                        await db.ExecuteNonQueryAsync($"DELETE FROM {nameof(PostFts)} where {nameof(PostFts.RefId)} = {QuotedValue(refId)}");
                         db.ExecuteNonQuery($@"INSERT INTO {nameof(PostFts)} (
                             rowid,
                             {nameof(PostFts.RefId)},
@@ -100,8 +104,8 @@ await db.ExecuteNonQueryAsync($@"INSERT INTO {nameof(PostFts)} (
                             {nameof(PostFts.ModifiedDate)}
                         ) VALUES (
                             {nextId++},
-                            '{id}-{userName}',
-                            '{userName}',
+                            {QuotedValue(refId)},
+                            {QuotedValue(userName)},
                             {QuotedValue(body)},
                             {QuotedValue(modifiedDate.ToString("yyyy-MM-dd HH:mm:ss"))}
                         )");
@@ -125,5 +129,4 @@ async Task<Post> ToPostAsync(IVirtualFile file)
         var post = json.FromJson<Post>();
         return post;
     }
-
-}
+}

MyApp.ServiceModel/Stats.cs

@@ -131,5 +131,5 @@ public class DbWrites
 [Restrict(InternalOnly = true)]
 public class SearchTasks
 {
-    public int? AddPostId { get; set; }
+    public int? AddPostToIndex { get; set; }
 }