import React = require("react");
import { useState, useEffect, useRef } from "react";
import { useAuth } from "../useAuth";
export default function Login() {
const auth = useAuth();
const [username, setUsername] = useState("");
const [password, setPassword] = useState("");
const [error, setError] = useState("");
const [loading, setLoading] = useState(false);
const isMountedRef = useRef(null);
useEffect(() => {
isMountedRef.current = true;
return () => isMountedRef.current = false;
});
const handleSubmit = async (evt) => {
evt.preventDefault();
setError("");
setLoading(true);
try {
await auth.login(username, password);
} catch (e) {
setError(e.message);
} finally {
if (isMountedRef.current) {
setLoading(false);
}
}
};
return (
<div className="bg-primary p-4 text-white min-vh-100 d-flex justify-content-center align-items-center">
<div>
<h1>chartered ✈️</h1>
<h6>a private, authenticated cargo registry</h6>
<div className="card border-0 shadow-sm text-black p-2" style={{width: "40rem"}}>
<div className="card-body">
<div className="alert alert-danger alert-dismissible" role="alert" style={{ display: error ? 'block' : 'none' }}>
{error}
<button type="button" className="btn-close" aria-label="Close" onClick={() => setError("")}>
</button>
</div>
<form onSubmit={handleSubmit}>
<div className="mb-3">
<label htmlFor="username" className="form-label">Username</label>
<input type="text" className="form-control" id="username" disabled={loading} value={username} onChange={e => setUsername(e.target.value)} />
</div>
<div className="mb-3">
<label htmlFor="password" className="form-label">Password</label>
<input type="password" className="form-control" id="password" disabled={loading} value={password} onChange={e => setPassword(e.target.value)} />
</div>
<div className="ml-auto">
<button type="submit" className="btn btn-primary" style={{ display: !loading ? 'block' : 'none' }}>Login</button>
<div className="spinner-border text-primary mt-4" role="status" style={{ display: loading ? 'block' : 'none' }}>
<span className="visually-hidden">Logging in...</span>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
);
}