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import React, { useState, useContext } from "react";
import "./Login.css";
import { NetflixLogo, LoginBackground } from "assets/images/";
import { TextField } from "@material-ui/core";
import Button from "components/UI/Button/Button";
import FormControlLabel from "@material-ui/core/FormControlLabel";
import Checkbox from "@material-ui/core/Checkbox";
import { useHistory } from "react-router-dom";
import { AuthenticationContext } from 'context/Authentication'
import { validEmailAndPhoneNumber } from 'utils/validation'
/**
* The login component, which validates the email and password
* fields and uses a controlled form. Uses material UI for the
* textfields.
*/
const Login = props => {
const [form, setForm] = useState({
email: {
value: '',
touched: false,
valid: false
},
password: {
value: '',
touched: false,
valid: false
},
onSubmitInvalid: false
})
const history = useHistory()
const authContext = useContext(AuthenticationContext)
const inputChangeHandler = event => {
const { name, value } = event.target;
if (name === "email") {
setForm(prevForm => ({
...prevForm,
email: {
...prevForm.email,
value: value, touched: true, valid: value.length > 0 && validEmailAndPhoneNumber(value)
}
}))
} else if (name === "password") {
setForm(prevForm => ({
...prevForm,
password: {
...prevForm.password, value: value, touched: true,
valid: value.length >= 4 && value.length <= 60
}
}))
}
};
// For setting error spans once any of the fields are touched.
const fieldBlurHandler = event => {
if (event.target.name === 'email') {
if (form.email.value === '') {
setForm(prevForm => ({
...prevForm,
email: { ...prevForm.email, touched: true }
}))
}
}
if (event.target.name === 'password') {
if (form.password.value === '') {
setForm(prevForm => ({
...prevForm,
password: { ...prevForm.password, touched: true }
}))
}
}
};
let [emailSpan, passwordSpan] = [null, null];
if ((!form.email.valid && form.email.touched) || (form.onSubmitInvalid && !form.email.valid)) {
emailSpan = <span>Please enter a valid email or phone number.</span>
}
if ((!form.password.valid && form.password.touched) || (form.onSubmitInvalid && !form.password.valid)) {
passwordSpan = <span>Your password must contain between 4 and 60 characters.</span>
}
const formSubmitHandler = (event) => {
event.preventDefault()
if (!form.email.valid || !form.password.valid) {
setForm(prevForm => ({ ...prevForm, onSubmitInvalid: true }))
} else {
authContext.login()
history.push("/browse");
}
}
return (
<div
className="Login"
style={{ backgroundImage: `url(${LoginBackground})` }}
>
<img src={NetflixLogo} alt="Logo" />
<div className="LoginCard">
<h1>Sign In</h1>
<form onSubmit={formSubmitHandler}>
<TextField
name="email"
className="textField"
label="Email or phone number"
variant="filled"
type="text"
style={{ backgroundColor: "#333" }}
color="secondary"
value={form.email.value}
onChange={inputChangeHandler}
onBlur={fieldBlurHandler}
autoComplete="off"
InputLabelProps={{
style: { color: "#8c8c8c" }
}}
/>
{emailSpan}
<TextField
name="password"
className="textField"
label="Password"
variant="filled"
type="password"
style={{ backgroundColor: "#333" }}
color="secondary"
value={form.password.value}
onChange={inputChangeHandler}
onBlur={fieldBlurHandler}
autoComplete="off"
InputLabelProps={{
style: { color: "#8c8c8c" }
}}
/>
{passwordSpan}
<Button
height="45px" width="100%"
backgroundColor="#e50914"
textColor="#fff">
Sign In
</Button>
</form>
<div className="HorizontalDiv">
<FormControlLabel
style={{ marginLeft: "-12px" }}
control={
<Checkbox style={{ color: "rgb(229, 9, 20)" }} name="checkedB" />
}
label="Remember Me"
/>
<span>Need help?</span>
</div>
</div>
</div>
);
};
export default Login;
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