update login resolver codes

@@ -4,24 +4,21 @@ import jwt from "jsonwebtoken";
 
 export default {
   Mutation: {
-    login: async (_, args, context) => {
+    login: async (_, args) => {
       const { email, password } = args;
       const user = await prisma.user.findOne({
         where: {
           email,
         },
       });
-      if (!user) {
-        throw new Error("There is no such user");
+      let vaild;
+      if (user) {
+        vaild = await bcrypt.compare(password, user.password);
       }
-
-      const vaild = await bcrypt.compare(password, user.password);
-      if (!vaild) {
-        throw new Error("Invaild Password!");
+      if (!user || !vaild) {
+        throw new Error("Not vaild email or password");
       }
-
       const token = jwt.sign({ id: user.id }, process.env.JWT_SECRET);
-
       return { token, user };
     },
   },