src/views-components/login-form/login-form.tsx

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 import * as React from 'react';
   6 import { useState, useEffect, useRef } from 'react';
   7 import { withStyles, WithStyles, StyleRulesCallback } from '@material-ui/core/styles';
   8 import CircularProgress from '@material-ui/core/CircularProgress';
   9 import { Button, Card, CardContent, TextField, CardActions } from '@material-ui/core';
  10 import { green } from '@material-ui/core/colors';
  11 import { AxiosPromise } from 'axios';
  12 import { DispatchProp } from 'react-redux';
  13 import { saveApiToken } from '~/store/auth/auth-action';
  14 import { navigateToRootProject } from '~/store/navigation/navigation-action';
  15
  16 type CssRules = 'root' | 'loginBtn' | 'card' | 'wrapper' | 'progress';
  17
  18 const styles: StyleRulesCallback<CssRules> = theme => ({
  19     root: {
  20         display: 'flex',
  21         flexWrap: 'wrap',
  22         width: '100%',
  23         margin: `${theme.spacing.unit} auto`
  24     },
  25     loginBtn: {
  26         marginTop: theme.spacing.unit,
  27         flexGrow: 1
  28     },
  29     card: {
  30         marginTop: theme.spacing.unit,
  31         width: '100%'
  32     },
  33     wrapper: {
  34         margin: theme.spacing.unit,
  35         position: 'relative',
  36     },
  37     progress: {
  38         color: green[500],
  39         position: 'absolute',
  40         top: '50%',
  41         left: '50%',
  42         marginTop: -12,
  43         marginLeft: -12,
  44     },
  45 });
  46
  47 type LoginFormProps = DispatchProp<any> & WithStyles<CssRules> & {
  48     handleSubmit: (username: string, password: string) => AxiosPromise;
  49 };
  50
  51 export const LoginForm = withStyles(styles)(
  52     ({ handleSubmit, dispatch, classes }: LoginFormProps) => {
  53         const userInput = useRef<HTMLInputElement>(null);
  54         const [username, setUsername] = useState('');
  55         const [password, setPassword] = useState('');
  56         const [isButtonDisabled, setIsButtonDisabled] = useState(true);
  57         const [isSubmitting, setSubmitting] = useState(false);
  58         const [helperText, setHelperText] = useState('');
  59         const [error, setError] = useState(false);
  60
  61         useEffect(() => {
  62             setError(false);
  63             setHelperText('');
  64             if (username.trim() && password.trim()) {
  65                 setIsButtonDisabled(false);
  66             } else {
  67                 setIsButtonDisabled(true);
  68             }
  69         }, [username, password]);
  70
  71         // This only runs once after render.
  72         useEffect(() => {
  73             setFocus();
  74         }, []);
  75
  76         const setFocus = () => {
  77             userInput.current!.focus();
  78         };
  79
  80         const handleLogin = () => {
  81             setError(false);
  82             setHelperText('');
  83             setSubmitting(true);
  84             handleSubmit(username, password)
  85             .then((response) => {
  86                 setSubmitting(false);
  87                 const apiToken = response.data.token;
  88                 if (apiToken) {
  89                     dispatch<any>(saveApiToken(apiToken)).finally(
  90                         () => dispatch(navigateToRootProject));
  91                 } else {
  92                     setError(true);
  93                     setHelperText(response.data.message || 'Please try again');
  94                     setFocus();
  95                 }
  96             })
  97             .catch((err) => {
  98                 setError(true);
  99                 setSubmitting(false);
 100                 setHelperText(`${err.response && err.response.data && err.response.data.errors[0] || 'Error logging in: '+err}`);
 101                 setFocus();
 102             });
 103         };
 104
 105         const handleKeyPress = (e: any) => {
 106             if (e.keyCode === 13 || e.which === 13) {
 107                 if (!isButtonDisabled) {
 108                     handleLogin();
 109                 }
 110             }
 111         };
 112
 113         return (
 114             <React.Fragment>
 115             <form className={classes.root} noValidate autoComplete="off">
 116                 <Card className={classes.card}>
 117                     <div className={classes.wrapper}>
 118                     <CardContent>
 119                         <TextField
 120                             inputRef={userInput}
 121                             disabled={isSubmitting}
 122                             error={error} fullWidth id="username" type="email"
 123                             label="Username" margin="normal"
 124                             onChange={(e) => setUsername(e.target.value)}
 125                             onKeyPress={(e) => handleKeyPress(e)}
 126                         />
 127                         <TextField
 128                             disabled={isSubmitting}
 129                             error={error} fullWidth id="password" type="password"
 130                             label="Password" margin="normal"
 131                             helperText={helperText}
 132                             onChange={(e) => setPassword(e.target.value)}
 133                             onKeyPress={(e) => handleKeyPress(e)}
 134                         />
 135                     </CardContent>
 136                     <CardActions>
 137                         <Button variant="contained" size="large" color="primary"
 138                             className={classes.loginBtn} onClick={() => handleLogin()}
 139                             disabled={isSubmitting || isButtonDisabled}>
 140                             Log in
 141                         </Button>
 142                     </CardActions>
 143                     { isSubmitting && <CircularProgress color='secondary' className={classes.progress} />}
 144                     </div>
 145                 </Card>
 146             </form>
 147             </React.Fragment>
 148         );
 149     });