From 893c27d4c3716ab8307eb950376f291fec1d528b Mon Sep 17 00:00:00 2001
From: Nicolas Constant <github@nicolas-constant.com>
Date: Mon, 4 Jan 2021 21:45:48 -0500
Subject: [PATCH] fix clean-up check on unfollow, fix #24

---
 .../BusinessUseCases/ProcessUnfollowUser.cs       | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/BirdsiteLive.Domain/BusinessUseCases/ProcessUnfollowUser.cs b/src/BirdsiteLive.Domain/BusinessUseCases/ProcessUnfollowUser.cs
index 4d5483a..a8a53b4 100644
--- a/src/BirdsiteLive.Domain/BusinessUseCases/ProcessUnfollowUser.cs
+++ b/src/BirdsiteLive.Domain/BusinessUseCases/ProcessUnfollowUser.cs
@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System.Linq;
+using System.Threading.Tasks;
 using BirdsiteLive.DAL.Contracts;
 
 namespace BirdsiteLive.Domain.BusinessUseCases
@@ -38,8 +39,16 @@ namespace BirdsiteLive.Domain.BusinessUseCases
             if (follower.FollowingsSyncStatus.ContainsKey(twitterUserId))
                 follower.FollowingsSyncStatus.Remove(twitterUserId);
 
-            // Save Follower
-            await _followerDal.UpdateFollowerAsync(follower);
+            // Save or delete Follower
+            if (follower.Followings.Any())
+                await _followerDal.UpdateFollowerAsync(follower);
+            else
+                await _followerDal.DeleteFollowerAsync(followerUsername, followerDomain); 
+            
+            // Check if TwitterUser has still followers
+            var followers = await _followerDal.GetFollowersAsync(twitterUser.Id);
+            if (!followers.Any())
+                await _twitterUserDal.DeleteTwitterUserAsync(twitterUsername);
         }
     }
 }
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