update AuthContainer.js

 import React, { useState } from "react";
 import React, { useState } from "react";
 import { useMutation } from "@apollo/react-hooks";
 import { useMutation } from "@apollo/react-hooks";
-import { LOGIN, SIGNUP } from "./AuthQueries";
+import { LOGIN, SIGNUP, LOCAL_LOG_IN } from "./AuthQueries";
 import useInput from "../../Hooks/useInput";
 import useInput from "../../Hooks/useInput";
 import { toast } from "react-toastify";
 import { toast } from "react-toastify";
 import AuthPresenter from "./AuthPresenter";
 import AuthPresenter from "./AuthPresenter";
@@ -14,15 +14,12 @@ export default () => {
   const phoneNum = useInput("");
   const phoneNum = useInput("");
   const username = useInput("");
   const username = useInput("");
 
 
-  // mutations
   const [login] = useMutation(LOGIN);
   const [login] = useMutation(LOGIN);
-
   const [createAccount] = useMutation(SIGNUP);
   const [createAccount] = useMutation(SIGNUP);
+  const [loginState] = useMutation(LOCAL_LOG_IN);
 
 
-  // TODO: When login or signup success, get token from mutation function
-
-  let Auth;
-  let token;
+  let Auth; // mutation result variable
+  let token; // token from login or signUp.
   const onSubmit = async (e) => {
   const onSubmit = async (e) => {
     e.preventDefault();
     e.preventDefault();
     if (action === "logIn") {
     if (action === "logIn") {
@@ -30,7 +27,7 @@ export default () => {
         try {
         try {
           Auth = await login({
           Auth = await login({
             variables: { email: email.value, password: password.value },
             variables: { email: email.value, password: password.value },
-          });
+          }); // AuthPayload object.
           token = Auth.data.login.token;
           token = Auth.data.login.token;
           if (!Auth) {
           if (!Auth) {
             // when login fail
             // when login fail
@@ -38,8 +35,11 @@ export default () => {
             setAction("signUp");
             setAction("signUp");
           } else {
           } else {
             // when login success
             // when login success
+            console.log("login success");
             toast.success("login success");
             toast.success("login success");
-            // TODO: move page to Main container.
+            await loginState({
+              variables: { token },
+            });
           }
           }
         } catch {
         } catch {
           toast.error("login failed!");
           toast.error("login failed!");