Merge pull request #28 from cristianopacheco/master

Added comments in LoginController.

webservice/app/Http/Controllers/LoginController.php

@@ -12,41 +12,76 @@ class LoginController extends Controller
 {
     use ThrottlesLogins;
 
+    /**
+     * Issue a JWT token when valid login credentials are
+     * presented.
+     *
+     * @param Request $request
+     * @return \Illuminate\Http\JsonResponse
+     */
     public function login(Request $request)
     {
+        // Determine if the user has too many failed login attempts.
         if ($this->hasTooManyLoginAttempts($request)) {
+
+            // Fire an event when a lockout occurs.
             $this->fireLockoutEvent($request);
 
             return $this->sendLockoutResponse($request);
         }
 
+        // Grab credentials from the request.
         $credentials = $request->only('email', 'password');
 
+        // Attempt to verify the credentials and create a token for the user.
         if ($token = Auth::guard('api')->attempt($credentials)) {
+
+            // All good so return the json with token and user.
             return $this->sendLoginResponse($request, $token);
         }
 
+        // Increments login attempts.
         $this->incrementLoginAttempts($request);
 
         return $this->sendFailedLoginResponse($request);
     }
 
+    /**
+     * Return the token and current user authenticated.
+     *
+     * @param Request $request
+     * @param $token
+     * @return \Illuminate\Http\JsonResponse
+     */
     protected function sendLoginResponse(Request $request, $token)
     {
+        // Clear the login locks for the given user credentials.
         $this->clearLoginAttempts($request);
 
         $user = Auth::guard('api')->user();
 
         return response()->json(compact('token', 'user'));
     }
 
+    /**
+     * Return error message after determining invalid credentials.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Illuminate\Http\JsonResponse
+     */
     protected function sendFailedLoginResponse(Request $request)
     {
         $message = Lang::get('auth.failed');
 
         return response()->json(['messages' => [$message]], 401);
     }
 
+    /**
+     * Redirect the user after determining they are locked out.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Illuminate\Http\JsonResponse
+     */
     public function sendLockoutResponse(Request $request)
     {
         $seconds = $this->limiter()->availableIn(