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>
);
}