Added update password method

docker/backend/src/mw/schema/mutation.cr

@@ -15,6 +15,22 @@ module MW
         )
       end
 
+      @[GraphQL::Field]
+      def update_password(context : Context, password : String) : LoginPayload
+        context.authenticated!
+
+        if Auth.verify_password?(password, context.user.not_nil!.password)
+          raise "New password must be different from old password"
+        end
+
+        context.user.not_nil!.update!(password: Auth.hash_password(password))
+
+        LoginPayload.new(
+          user: User.new(context.user.not_nil!),
+          token: Auth.create_user_jwt(context.user.not_nil!.id.not_nil!.to_i),
+        )
+      end
+
       @[GraphQL::Field]
       def create_user(context : Context, input : UserCreateInput) : User
         context.admin!