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import React, { useContext, useEffect, useState } from 'react';
import { Button, Divider, Form, Grid, Header, Image, Message, Modal, Segment } from 'semantic-ui-react';
import { Link, useNavigate, useSearchParams } from 'react-router-dom';
import { UserContext } from '../context/User';
import { API, getLogo, showError, showSuccess } from '../helpers';
const LoginForm = () => {
const [inputs, setInputs] = useState({
username: '',
password: '',
wechat_verification_code: ''
});
const [searchParams, setSearchParams] = useSearchParams();
const [submitted, setSubmitted] = useState(false);
const { username, password } = inputs;
const [userState, userDispatch] = useContext(UserContext);
let navigate = useNavigate();
const [status, setStatus] = useState({});
const logo = getLogo();
useEffect(() => {
if (searchParams.get('expired')) {
showError('未登录或登录已过期，请重新登录！');
}
let status = localStorage.getItem('status');
if (status) {
status = JSON.parse(status);
setStatus(status);
}
}, []);
const [showWeChatLoginModal, setShowWeChatLoginModal] = useState(false);
const onGitHubOAuthClicked = () => {
window.open(
`https://github.com/login/oauth/authorize?client_id=${status.github_client_id}&scope=user:email`
);
};
const onWeChatLoginClicked = () => {
setShowWeChatLoginModal(true);
};
const onSubmitWeChatVerificationCode = async () => {
const res = await API.get(
`/api/oauth/wechat?code=${inputs.wechat_verification_code}`
);
const { success, message, data } = res.data;
if (success) {
userDispatch({ type: 'login', payload: data });
localStorage.setItem('user', JSON.stringify(data));
navigate('/');
showSuccess('登录成功！');
setShowWeChatLoginModal(false);
} else {
showError(message);
}
};
function handleChange(e) {
const { name, value } = e.target;
setInputs((inputs) => ({ ...inputs, [name]: value }));
}
async function handleSubmit(e) {
setSubmitted(true);
if (username && password) {
const res = await API.post(`/api/user/login`, {
username,
password
});
const { success, message, data } = res.data;
if (success) {
userDispatch({ type: 'login', payload: data });
localStorage.setItem('user', JSON.stringify(data));
navigate('/');
showSuccess('登录成功！');
} else {
showError(message);
}
}
}
return (
<Grid textAlign='center' style={{ marginTop: '48px' }}>
<Grid.Column style={{ maxWidth: 450 }}>
<Header as='h2' color='' textAlign='center'>
<Image src={logo} /> 用户登录
</Header>
<Form size='large'>
<Segment>
<Form.Input
fluid
icon='user'
iconPosition='left'
placeholder='用户名'
name='username'
value={username}
onChange={handleChange}
/>
<Form.Input
fluid
icon='lock'
iconPosition='left'
placeholder='密码'
name='password'
type='password'
value={password}
onChange={handleChange}
/>
<Button color='green' fluid size='large' onClick={handleSubmit}>
登录
</Button>
</Segment>
</Form>
<Message>
忘记密码？
<Link to='/reset' className='btn btn-link'>
点击重置
</Link>
； 没有账户？
<Link to='/register' className='btn btn-link'>
点击注册
</Link>
</Message>
{status.github_oauth || status.wechat_login ? (
<>
<Divider horizontal>Or</Divider>
{status.github_oauth ? (
<Button
circular
color='black'
icon='github'
onClick={onGitHubOAuthClicked}
/>
) : (
<></>
)}
{status.wechat_login ? (
<Button
circular
color='green'
icon='wechat'
onClick={onWeChatLoginClicked}
/>
) : (
<></>
)}
</>
) : (
<></>
)}
<Modal
onClose={() => setShowWeChatLoginModal(false)}
onOpen={() => setShowWeChatLoginModal(true)}
open={showWeChatLoginModal}
size={'mini'}
>
<Modal.Content>
<Modal.Description>
<Image src={status.wechat_qrcode} fluid />
<div style={{ textAlign: 'center' }}>
<p>
微信扫码关注公众号，输入「验证码」获取验证码（三分钟内有效）
</p>
</div>
<Form size='large'>
<Form.Input
fluid
placeholder='验证码'
name='wechat_verification_code'
value={inputs.wechat_verification_code}
onChange={handleChange}
/>
<Button
color=''
fluid
size='large'
onClick={onSubmitWeChatVerificationCode}
>
登录
</Button>
</Form>
</Modal.Description>
</Modal.Content>
</Modal>
</Grid.Column>
</Grid>
);
};
export default LoginForm;
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