* Refactor and fix machine self-registration into db

+ Added change language API
+ Added Role to user info

Step/Controllers/WebApi/UserController.cs

@@ -5,6 +5,9 @@ using System;
 using Step.Model.DatabaseModels;
 using System.Security.Claims;
 using System.Linq;
+using static Step.Utils.LanguageController;
+using Step.Model.DTOModels;
+using System.Globalization;
 
 namespace Step.Controllers.WebApi
 {
@@ -29,9 +32,42 @@ namespace Step.Controllers.WebApi
             if (userId == null)
                 return Unauthorized();
 
-            using (UsersController user = new UsersController())
+            using (UsersController userController = new UsersController())
             {
-                 return Ok(user.GetUserInfo(Convert.ToInt32(userId.Value)));
+                return Ok(userController.GetUserInfo(Convert.ToInt32(userId.Value)));
+            }
+        }
+
+        [Route("language"), HttpPut]
+        [WebApiAuthorize(FunctionAccess = "userData", Action = ACTIONS.READ)]
+        public IHttpActionResult PutUserLanguage([FromBody] dynamic user)
+        {
+            // If no body return 400
+            if (user == null)
+                return BadRequest();
+
+            // Validate user id
+            var identity = User.Identity as ClaimsIdentity;
+            var userId = identity.Claims.Where(c => c.Type == USER_ID_KEY).SingleOrDefault();
+
+            if (userId == null)
+                return Unauthorized();
+            
+            // Parse body data and validate language
+            var newLanguage = (string)user.language;
+
+            if (newLanguage == null || !IsValidLanguage(newLanguage))
+                return BadRequest();
+
+            if (!LanguageIsAvailable(newLanguage))
+                return NotFound();
+
+
+            using (UsersController userController = new UsersController())
+            {
+                userController.ChangeUserLanguage(Convert.ToInt32(userId.Value), CultureInfo.CreateSpecificCulture(newLanguage));
+
+                return Ok();
             }
         }
     }