Query List for Countries

src/Server/Controllers/LocationController.cs

@@ -18,5 +18,14 @@ namespace BoredCareers.Controllers {
             return NotFound("Not logged in");
         }
 
+        [HttpGet("Distinct")]
+        public async Task<IActionResult> GetCountries() {
+            if (isLoggedIn()) {
+                string[] places = await _databaseService.GetDistinctCountries();
+                return Ok(places.ToArray());
+            }
+            return NotFound("Not logged in");
+        }
+
     }
 }

src/Server/Services/DatabaseService/Location.cs

@@ -62,5 +62,23 @@ namespace BoredCareers.Services.DatabaseService {
             return closePostalCodes.ToArray();
         }
 
+        public async Task<string[]> GetDistinctCountries() {
+            List<string> closePostalCodes = new List<string>();
+            using (MySqlConnection connection = GetConnection()) {
+                await connection.OpenAsync();
+                string command = "SELECT DISTINCT(CountryCode) FROM PostalCodes;";
+
+                MySqlCommand cmd = new MySqlCommand(command, connection);
+                using (DbDataReader reader = await cmd.ExecuteReaderAsync()) {
+                    while (await reader.ReadAsync()) {
+                        string _city = reader.GetString("CountryCode");
+
+                        closePostalCodes.Add(_city);
+                    }
+                }
+            }
+            return closePostalCodes.ToArray();
+        }
+
     }
 }