import React = require("react");
import { useState, useEffect, useRef } from "react";
import { useLocation } from "react-router-dom";
import { useAuth } from "../useAuth";
import { useUnauthenticatedRequest } from "../util";
interface OAuthProviders {
providers: string[];
}
export default function Login() {
const location = useLocation();
const auth = useAuth();
const [username, setUsername] = useState("");
const [password, setPassword] = useState("");
const [error, setError] = useState("");
const [loading, setLoading] = useState<string | null>(null);
const isMountedRef = useRef(null);
const { response: oauthProviders } = useUnauthenticatedRequest<OAuthProviders>({ endpoint: "login/oauth/providers" });
useEffect(() => {
if (location.state?.error) {
setError(location.state.error);
}
isMountedRef.current = true;
return () => (isMountedRef.current = false);
});
const handleSubmit = async (evt) => {
evt.preventDefault();
setError("");
setLoading("password");
try {
await auth.login(username, password);
} catch (e) {
setError(e.message);
} finally {
if (isMountedRef.current) {
setLoading(null);
}
}
};
const handleOAuthLogin = async (provider) => {
setError("");
setLoading(provider);
try {
await auth.oauthLogin(provider);
} catch (e) {
setError(e.message);
} finally {
if (isMountedRef.current) {
setLoading(null);
}
}
}
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="form-floating">
<input
type="text"
className="form-control"
placeholder="john.smith"
id="username"
disabled={!!loading}
value={username}
onChange={(e) => setUsername(e.target.value)}
/>
<label htmlFor="email" className="form-label">Username</label>
</div>
<div className="form-floating mt-2">
<input
type="password"
className="form-control"
placeholder="••••••••••••"
id="password"
disabled={!!loading}
value={password}
onChange={(e) => setPassword(e.target.value)}
/>
<label htmlFor="password" className="form-label">Password</label>
</div>
<ButtonOrSpinner
type="submit"
variant="primary"
disabled={!!loading}
showSpinner={loading === "password"}
text={`Login`}
onClick={handleSubmit}
/>
</form>
{oauthProviders?.providers.length > 0 ? (<>
<div className="side-lines mt-3">or</div>
{oauthProviders.providers.map((v, i) => (
<ButtonOrSpinner
key={i}
type="button"
variant="dark"
disabled={!!loading}
showSpinner={loading === v}
text={`Login with ${v}`}
onClick={(evt) => {
evt.preventDefault();
handleOAuthLogin(v);
}}
/>
))}
</>): <></>}
</div>
</div>
</div>
</div>
);
}
function ButtonOrSpinner({ type, variant, disabled, showSpinner, text, onClick }: {
type: "button" | "submit",
variant: string,
disabled: boolean,
showSpinner: boolean,
text: string,
onClick: (evt) => any,
}) {
if (showSpinner) {
return (
<div className="spinner-border text-primary mt-3 m-auto d-block" role="status">
<span className="visually-hidden">Logging in...</span>
</div>
);
}
if (type) {
return (
<button type={type} disabled={disabled} onClick={onClick} className={`btn btn-lg mt-2 btn-${variant} w-100`}>
{text}
</button>
);
}
}