Add submit handler

src/components/SignInForm/index.jsx

@@ -1,12 +1,27 @@
-import React from 'react';
+import React, { useRef } from 'react';
 import { Link as RouterLink } from 'react-router-dom';
 import { Avatar, Button, Container, CssBaseline, Grid, Link, TextField, Typography } from '@material-ui/core';
 import LockOutlinedIcon from '@material-ui/icons/LockOutlined';
+import { useUserContext }  from '../Contexts/UserContext';
 import useStyles from '../Styles';
 
 export default function SignInForm() {
     const classes = useStyles();
-  
+    const emailEl = useRef(null);
+    const passwordEl = useRef(null);
+    const { fetching, signIn, setError } = useUserContext();
+    const onSubmit = async (event) => {
+      try {
+        event.preventDefault();
+        const username = emailEl.current.value;
+        const password = passwordEl.current.value;
+        const result = await signIn(username, password);
+      }
+      catch (e) {
+        setError(e.message);
+      }
+    };
+
     return (
       <Container component="main" maxWidth="xs">
         <CssBaseline />
@@ -17,7 +32,7 @@ export default function SignInForm() {
           <Typography component="h1" variant="h5">
             Sign in
           </Typography>
-          <form className={classes.form} noValidate>
+          <form className={classes.form} noValidate action="{onSubmit}">
             <TextField
               variant="outlined"
               margin="normal"
@@ -28,6 +43,7 @@ export default function SignInForm() {
               name="email"
               autoComplete="email"
               autoFocus
+              inputRef={emailEl}
             />
             <TextField
               variant="outlined"
@@ -39,13 +55,16 @@ export default function SignInForm() {
               type="password"
               id="password"
               autoComplete="current-password"
+              inputRef={passwordEl}
             />
             <Button
               type="submit"
+              disabled={fetching}
               fullWidth
               variant="contained"
               color="primary"
               className={classes.submit}
+              onClick={onSubmit}
             >
               Sign In
             </Button>