add tag func

Controllers/GameController.cs

@@ -82,5 +82,33 @@ namespace YandexGameServer.Controllers
 
             return Ok(sb.ToString());
         }
+
+        [HttpGet("tags/{city:int}")]
+        public async Task<IActionResult> GetTags(int cityCode)
+        {
+            Cities city = (Cities)cityCode;
+            var result = await _databaseService.GetTagsAsync();
+            if (result == null) return NotFound();
+
+            var tags = result.Where(x => x.city == city).ToList();
+            if (tags.Count == 0) return NotFound();
+            else return Ok(tags);
+        }
+
+        [HttpPost("tags/add")]
+        public async Task SetTags(Tag tag)
+        {
+            var tagsInUse = await _databaseService.GetTagsAsync();
+            if(tagsInUse == null)
+            {
+                await _databaseService.CreateAsync(tag);
+                return;
+            }
+
+            Tag? tagInUse = tagsInUse.Find(x => x.game == tag.game && x.city == tag.city);
+
+            if (tagInUse == null) await _databaseService.CreateAsync(tag);
+            else await _databaseService.UpdateAsync(tag);
+        }
     }
 }