feat: add endpoint for title back-fill status

Author: kyleratti

ApplicationData/Services/RedditPostProvider.cs

@@ -59,4 +59,12 @@ UPDATE reddit_posts
 			WHERE reddit_post_id = @redditPostId
 			""", new { redditPostId, title }, cancellationToken);
 	}
+
+	public async Task<int> GetPostsNeedingTitleFetchedCount(CancellationToken cancellationToken)
+	{
+		await using var connection = _dbConnectionFactory.CreateReadOnlyConnection();
+		return await connection.ExecuteScalar<int>(
+			"SELECT COUNT(*) FROM reddit_posts WHERE is_title_fetched = 0",
+			cancellationToken: cancellationToken);
+	}
 }

WebApi/Controllers/Admin/AdminQueueController.cs

@@ -15,13 +15,16 @@ namespace WebApi.Controllers.Admin;
 public class AdminQueueController : Controller
 {
 	private readonly LinkProvider _linkProvider;
+	private readonly RedditPostProvider _redditPostProvider;
 
 	/// <inheritdoc />
 	public AdminQueueController(
-		LinkProvider linkProvider
+		LinkProvider linkProvider,
+		RedditPostProvider redditPostProvider
 	)
 	{
 		_linkProvider = linkProvider;
+		_redditPostProvider = redditPostProvider;
 	}
 
 	/// <summary>
@@ -46,4 +49,19 @@ public async Task<IActionResult> GetProcessingQueue(CancellationToken cancellati
 			queuedItems = postIdsWithPendingChanges,
 		});
 	}
+
+	/// <summary>
+	/// Get the posts needing their title fetched
+	/// </summary>
+	[HttpGet]
+	[Route("post-title-backlog")]
+	public async Task<IActionResult> GetPostTitleFetchBacklog(CancellationToken cancellationToken)
+	{
+		var count = await _redditPostProvider.GetPostsNeedingTitleFetchedCount(cancellationToken);
+
+		return new OkObjectResult(new
+		{
+			postsNeedingTitleFetchedCount = count,
+		});
+	}
 }