Configure API to allow favoriting other users

Controllers/UsersController.cs

@@ -75,5 +75,38 @@ public async Task<IActionResult> UpdateUser(int userId, UpdateUserResource userR
 
             throw new Exception($"Updating user ID {userId} failed to save");
         }
+
+        [HttpPost("{userId}/like/{recipientId}")]
+        public async Task<IActionResult> LikeUser(int userId, int recipientId)
+        {
+            int id = int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value);
+
+            var like = await _repo.GetLike(userId, recipientId);
+
+            if (like != null)
+            {
+                return BadRequest("This person was already liked by you");
+            }
+
+            if (_repo.GetUser(recipientId) == null)
+            {
+                return NotFound("The user you tried to like doesn't exist");
+            }
+
+            like = new Like
+            {
+                LikerId = userId,
+                LikeeId = recipientId
+            };
+
+            _repo.Add(like);
+
+            if (await _repo.SaveChangesAsync())
+            {
+                return Ok(like);
+            }
+
+            return BadRequest("Failed to like this person");
+        }
     }
 }

Data/FriendRepository.cs

@@ -75,11 +75,14 @@ public async Task<PagedList<User>> GetUsers(UserParameters parameters)
             return await PagedList<User>.CreateAsync(users, parameters.PageNumber, parameters.PageSize);
         }
 
+        public async Task<Like> GetLike(int userId, int recipientId)
+        {
+            return await _context.Likes.FirstOrDefaultAsync(x => x.LikerId == userId && x.LikeeId == recipientId);
+        }
+
         public async Task<bool> SaveChangesAsync()
         {
             return await _context.SaveChangesAsync() > 0;
         }
-
-
     }
 }

Data/IFriendRepository.cs

@@ -14,5 +14,7 @@ public interface IFriendRepository
         Task<User> GetUser(int userId);
         Task<Photo> GetPhoto(int photoId);
         Task<Photo> GetMainPhoto(int userId);
+        Task<Like> GetLike(int userId, int recipientId);
+
     }
 }