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     loginLabel?: string,
  50 };
  51
  52 export const LoginForm = withStyles(styles)(
  53     ({ handleSubmit, loginLabel, dispatch, classes }: LoginFormProps) => {
  54         const userInput = useRef<HTMLInputElement>(null);
  55         const [username, setUsername] = useState('');
  56         const [password, setPassword] = useState('');
  57         const [isButtonDisabled, setIsButtonDisabled] = useState(true);
  58         const [isSubmitting, setSubmitting] = useState(false);
  59         const [helperText, setHelperText] = useState('');
  60         const [error, setError] = useState(false);
  61
  62         useEffect(() => {
  63             setError(false);
  64             setHelperText('');
  65             if (username.trim() && password.trim()) {
  66                 setIsButtonDisabled(false);
  67             } else {
  68                 setIsButtonDisabled(true);
  69             }
  70         }, [username, password]);
  71
  72         // This only runs once after render.
  73         useEffect(() => {
  74             setFocus();
  75         }, []);
  76
  77         const setFocus = () => {
  78             userInput.current!.focus();
  79         };
  80
  81         const handleLogin = () => {
  82             setError(false);
  83             setHelperText('');
  84             setSubmitting(true);
  85             handleSubmit(username, password)
  86             .then((response) => {
  87                 setSubmitting(false);
  88                 if (response.data.uuid && response.data.api_token) {
  89                     const apiToken = `v2/${response.data.uuid}/${response.data.api_token}`;
  90                     dispatch<any>(saveApiToken(apiToken)).finally(
  91                         () => dispatch(navigateToRootProject));
  92                 } else {
  93                     setError(true);
  94                     setHelperText(response.data.message || 'Please try again');
  95                     setFocus();
  96                 }
  97             })
  98             .catch((err) => {
  99                 setError(true);
 100                 setSubmitting(false);
 101                 setHelperText(`${err.response && err.response.data && err.response.data.errors[0] || 'Error logging in: '+err}`);
 102                 setFocus();
 103             });
 104         };
 105
 106         const handleKeyPress = (e: any) => {
 107             if (e.keyCode === 13 || e.which === 13) {
 108                 if (!isButtonDisabled) {
 109                     handleLogin();
 110                 }
 111             }
 112         };
 113
 114         return (
 115             <React.Fragment>
 116             <form className={classes.root} noValidate autoComplete="off">
 117                 <Card className={classes.card}>
 118                     <div className={classes.wrapper}>
 119                     <CardContent>
 120                         <TextField
 121                             inputRef={userInput}
 122                             disabled={isSubmitting}
 123                             error={error} fullWidth id="username" type="email"
 124                             label="Username" margin="normal"
 125                             onChange={(e) => setUsername(e.target.value)}
 126                             onKeyPress={(e) => handleKeyPress(e)}
 127                         />
 128                         <TextField
 129                             disabled={isSubmitting}
 130                             error={error} fullWidth id="password" type="password"
 131                             label="Password" margin="normal"
 132                             helperText={helperText}
 133                             onChange={(e) => setPassword(e.target.value)}
 134                             onKeyPress={(e) => handleKeyPress(e)}
 135                         />
 136                     </CardContent>
 137                     <CardActions>
 138                         <Button variant="contained" size="large" color="primary"
 139                             className={classes.loginBtn} onClick={() => handleLogin()}
 140                             disabled={isSubmitting || isButtonDisabled}>
 141                             {loginLabel || 'Log in'}
 142                         </Button>
 143                     </CardActions>
 144                     { isSubmitting && <CircularProgress color='secondary' className={classes.progress} />}
 145                     </div>
 146                 </Card>
 147             </form>
 148             </React.Fragment>
 149         );
 150     });