import React, { useState } from 'react';
import { Link, useParams } from 'react-router-dom';
import { Container, Form, Grid, Header, Message } from 'semantic-ui-react';
import { requester } from './utils.js';

function ResetForm() {
	const [input, setInput] = useState({});
	const [error, setError] = useState({});
	const [loading, setLoading] = useState(false);
	const [success, setSuccess] = useState(false);

	const handleValues = (e, v) => setInput({ ...input, [v.name]: v.value });
	const handleChange = (e) => handleValues(e, e.currentTarget);

	const handleSubmit = (e) => {
		if (loading) return;
		setLoading(true);
		requester('/password/reset/', 'POST', '', input)
		.then(res => {
			setLoading(false);
			setSuccess(true);
			setError({});
		})
		.catch(err => {
			setLoading(false);
			console.log(err);
			setError(err.data);
		});
	};

	return (
		<Form onSubmit={handleSubmit} error={!!error.email}>
			<Form.Input
				label='Email'
				name='email'
				onChange={handleChange}
				error={error.email}
			/>

			{error.email === 'Not found.' &&
				<Message
					error
					header='Email not found in Spaceport'
					content='Ask a director if you forgot which one you used.'
				/>
			}

			<Form.Button loading={loading} error={error.non_field_errors}>
				Submit
			</Form.Button>
			{loading && <div>Give me like 30 seconds...</div>}
			{success && <div>Success! Be sure to check your <b>spam folder</b>.</div>}
		</Form>
	);
};

function ConfirmForm() {
	const { uid, token } = useParams();
	const [input, setInput] = useState({ uid: uid, token: token });
	const [error, setError] = useState({});
	const [progress, setProgress] = useState([]);
	const [loading, setLoading] = useState(false);
	const [success, setSuccess] = useState(false);

	const handleValues = (e, v) => setInput({ ...input, [v.name]: v.value });
	const handleChange = (e) => handleValues(e, e.currentTarget);

	const handleSubmit = (e) => {
		if (loading) return;
		setLoading(true);
		setProgress([]);

		const request_id = token.slice(-10);
		const getStatus = () => {
			requester('/stats/progress/?request_id='+request_id, 'GET')
			.then(res => {
				setProgress(res);
			})
			.catch(err => {
				console.log(err);
			});
		};
		const interval = setInterval(getStatus, 500);

		requester('/password/reset/confirm/', 'POST', '', input)
		.then(res => {
			clearInterval(interval);
			setLoading(false);
			setSuccess(true);
			setError({});
		})
		.catch(err => {
			clearInterval(interval);
			setLoading(false);
			console.log(err);
			setError(err.data);
		});
	};

	const makeProps = (name) => ({
		name: name,
		onChange: handleChange,
		value: input[name] || '',
		error: error[name],
	});

	return (
		<Form onSubmit={handleSubmit}>
			<Form.Input
				label='New Password'
				type='password'
				{...makeProps('new_password1')}
			/>
			<Form.Input
				label='Confirm Password'
				type='password'
				{...makeProps('new_password2')}
			/>

			{(error.token || error.uid) && <p>Error: Invalid password reset URL! Try doing another reset.</p>}

			<p>
				{progress.map(x => <>{x}<br /></>)}
			</p>

			{success ?
				<p><Link to='/'>Return Home</Link> to log in.</p>
			:
				<Form.Button loading={loading} error={error.non_field_errors}>
					Submit
				</Form.Button>
			}
		</Form>
	);
};


export function PasswordReset() {
	return (
		<Container>
			<Header size='large'>Password Reset</Header>
			<Grid stackable columns={2}>
				<Grid.Column>
					<p>
						Enter your email and we will send you a password reset link.
					</p>

					<ResetForm />
				</Grid.Column>
			</Grid>
		</Container>
	);
};

export function ConfirmReset() {
	return (
		<Container>
			<Header size='large'>Password Reset</Header>
			<Grid stackable columns={2}>
				<Grid.Column>
					<p>
						Choose a new password.
					</p>

					<ConfirmForm />
				</Grid.Column>
			</Grid>
		</Container>
	);
};