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import React, {Fragment, useState, useContext} from "react";
import {Link} from "react-router-dom";
import Card from "components/card/Card.jsx";
import Button from "components/button/Button.jsx";
import Darken from "components/darken/Darken.jsx";
import Loading from "components/loading/Loading.jsx";
import Input from "components/input/Input.jsx";
import {UserContext} from "contexts/UserContext.jsx";
import {maybeAuthFromCookie} from "helpers/Auth.jsx";
import {getFieldError, correctFieldAnimate} from "helpers/Input.jsx";
import styles from "./Login.css";
const validateEmail = (email) => getFieldError(email?.target?.value, [3, 254]);
const validatePassword = (password) => getFieldError(password?.target?.value, [8, 64]);
function RequestButton({email, password, apiPath, promise, setPromise, setEmail,
setPassword, setLoginActive, setError, children}) {
const userState = useContext(UserContext);
const onClick = () => {
if (promise != null) {
return;
}
setError(null);
// We don't want to send a worthless request, we should animate the bad values.
const emailErrors = validateEmail(email);
const passwordErrors = validatePassword(password);
if (emailErrors != null || passwordErrors != null) {
correctFieldAnimate(email, setEmail, emailErrors);
correctFieldAnimate(password, setPassword, passwordErrors);
return;
}
const init = {
method: "POST",
headers: {
'Content-Type': "application/json"
},
body: JSON.stringify({
"email": email.target.value,
"password": password.target.value
}),
referrer: "same-origin",
};
setPromise(fetch(apiPath, init)
.then((response) => {
if (response.ok) {
if (!maybeAuthFromCookie(userState)) {
throw new Error("rejected authentication token");
}
setLoginActive(false);
return;
}
return response.json()
.then((json) => {
if ("error" in json) {
throw new Error(json.error);
}
throw new Error("unexpected data received");
})
})
.catch((error) => {
console.log(error);
setError(error.message);
})
.finally(() => {
setPromise(null);
})
);
};
// I'm not worried about this object becoming unmounted mid promise because
// our website design removes this possibility.
return (
<Button className={(promise != null ? styles.buttonLoading : null)}
onClick={onClick}>
{children}
</Button>
);
}
function CardError({active, text}) {
return (
<div className={styles.cardError + (active ? " " + styles.cardErrorActive : "")}>
<p>
{text}
</p>
</div>
);
}
function FormContents(props) {
const {setLoginActive,
isRegister,
setIsRegister,
title,
prompt,
linkContents,
apiPath} = props;
const [error, setError] = useState(null);
// Email and password .value's are null here to represent the state where the user
// has not typed in anything yet. This is to only validate after at least some
// input has been received.
const [email, setEmail] = useState(null);
const [password, setPassword] = useState(null);
const [promise, setPromise] = useState(null);
return (
<div className={styles.formContainer}>
<CardError active={error != null} text={error} />
<h1>{title}</h1>
<Input type="text"
title="Email"
field={email}
setField={setEmail}
validateField={validateEmail} />
<Input type="text"
title="Password"
field={password}
setField={setPassword}
validateField={validatePassword} />
<div className={styles.promptContainer}>
{prompt}
</div>
<RequestButton email={email}
password={password}
promise={promise}
setEmail={setEmail}
setPassword={setPassword}
setLoginActive={setLoginActive}
setPromise={setPromise}
setError={setError}
apiPath={apiPath}>
{promise == null ? title : <Loading className={styles.loading} />}
</RequestButton>
<a onClick={() => {
if (promise != null) { // disallow mid transaction change
return;
}
setIsRegister(!isRegister);
setError(null);
setEmail({...email, value: null, animating: false});
setPassword({...password, value: null, animating: false});}}>
{linkContents}
</a>
</div>
);
};
function RegisterPrompt() {
return (
<p>
By registering, you agree to both our privacy policy and to
waive all rights of basic privacy and security.
</p>
);
}
function LoginPrompt(props) {
const {setLoginActive} = props;
return (
<Fragment>
<div>
<input type="checkbox" id="save_login" /><label htmlFor="save_login">Save Login</label>
</div>
<Link to="settings/recover" onClick={() => setLoginActive(false)}>
Can't log in?
</Link>
</Fragment>
);
}
function Prompt(props) {
const {setLoginActive} = props;
const [isRegister, setIsRegister] = useState(true);
return (
<FormContents setLoginActive={setLoginActive}
isRegister={isRegister}
setIsRegister={setIsRegister}
title={isRegister ? "Sign Up" : "Login"}
prompt={isRegister ? <RegisterPrompt /> : <LoginPrompt setLoginActive={setLoginActive} />}
linkContents={isRegister ? "Already have an account?" : "Don't have an account?"}
apiPath={isRegister ? "/api/signup" : "/api/login"} />
);
}
// A popup which asks for login/register info.
export default function Login(props) {
const {active, setActive} = props;
return (
<Fragment>
<Darken active={active} onClick={() => setActive(false)} className={styles.darken} />
<div className={styles.screenCenter}>
<Card className={styles.login + (active ? " " + styles.loginActive : "")}>
<Prompt setLoginActive={setActive} />
</Card>
</div>
</Fragment>
);
}
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