Stage 3.4

src/handlers/handler_register.erl

@@ -9,31 +9,46 @@ init(Req, Opts) ->
 handle(Req, _Opts) ->
   case cowboy_req:method(Req) of
     <<"POST">> ->
-      {ok, Body, Req1} = cowboy_req:read_body(Req),
-      case jsx:decode(Body, [return_maps]) of
-        #{<<"email">> := Email, <<"password">> := Password} ->
-          case core_user:email_exists(Email) of
-            true ->
-              send_error(Req1, 409, <<"Email already exists">>);
-            false ->
-              case core_user:create(Email, Password) of
-                {ok, User} ->
-                  Token = logic_auth:generate_jwt(User#user.id, User#user.role),
-                  Response = #{
-                    user => #{
-                      id => User#user.id,
-                      email => User#user.email,
-                      role => User#user.role
-                    },
-                    token => Token
-                  },
-                  send_json(Req1, 201, Response);
-                {error, _} ->
-                  send_error(Req1, 500, <<"Internal server error">>)
+      case cowboy_req:has_body(Req) of
+        true ->
+          {ok, Body, Req1} = cowboy_req:read_body(Req),
+          case Body of
+            <<>> ->
+              send_error(Req1, 400, <<"Empty request body">>);
+            _ ->
+              try jsx:decode(Body, [return_maps]) of
+                #{<<"email">> := Email, <<"password">> := Password} ->
+                  case core_user:email_exists(Email) of
+                    true ->
+                      send_error(Req1, 409, <<"Email already exists">>);
+                    false ->
+                      case core_user:create(Email, Password) of
+                        {ok, User} ->
+                          Token = logic_auth:generate_jwt(User#user.id, User#user.role),
+                          Response = #{
+                            user => #{
+                              id => User#user.id,
+                              email => User#user.email,
+                              role => User#user.role
+                            },
+                            token => Token
+                          },
+                          send_json(Req1, 201, Response);
+                        {error, email_exists} ->
+                          send_error(Req1, 409, <<"Email already exists">>);
+                        {error, _} ->
+                          send_error(Req1, 500, <<"Internal server error">>)
+                      end
+                  end;
+                _ ->
+                  send_error(Req1, 400, <<"Missing email or password">>)
+              catch
+                _:_ ->
+                  send_error(Req1, 400, <<"Invalid JSON">>)
               end
           end;
-        _ ->
-          send_error(Req1, 400, <<"Invalid request body">>)
+        false ->
+          send_error(Req, 400, <<"Missing request body">>)
       end;
     _ ->
       send_error(Req, 405, <<"Method not allowed">>)