make authorization endpoint's redirect url react to window location

.env

@@ -1,2 +1,2 @@
-REACT_APP_API_ENDPOINT_0=http://localhost:5000/api
+REACT_APP_API_DOMAIN_=http://localhost:5000/
 REACT_APP_API_DOMAIN=https://wheelshare-altbackend-2efyw.ondigitalocean.app/

src/components/Authentication/authorizationEndpoint.ts

@@ -0,0 +1,15 @@
+function createAuthorizationEndpoint(redirectUrl: string) {
+	const url = new URL('https://ion.tjhsst.edu/oauth/authorize');
+
+	url.searchParams.set('response_type', 'code');
+	url.searchParams.set('client_id', 'rNa6n9YSg8ftINdyVPpUsaMuxNbHLo9dh1OsOktR');
+	url.searchParams.set('redirect_uri', redirectUrl);
+	url.searchParams.set('scope', 'read');
+
+	return url.toString();
+}
+
+const redirectUrl = `${window.location.protocol}://${window.location.host}/auth/ion/callback`;
+const authorizationEndpoint = createAuthorizationEndpoint(redirectUrl);
+
+export default authorizationEndpoint;

src/components/WheelShareLoggedOut.tsx

@@ -1,30 +1,13 @@
+import authorizationEndpoint from './Authentication/authorizationEndpoint';
 import UILink from './UILink';
 import UIPrimaryTitle from './UIPrimaryTitle';
 
-function createAuthorizationEndpoint(redirectUrl: string) {
-	const url = new URL('https://ion.tjhsst.edu/oauth/authorize');
-
-	url.searchParams.set('response_type', 'code');
-	url.searchParams.set('client_id', 'rNa6n9YSg8ftINdyVPpUsaMuxNbHLo9dh1OsOktR');
-	url.searchParams.set('redirect_uri', redirectUrl);
-	url.searchParams.set('scope', 'read');
-
-	return url.toString();
-}
-
-const dev = true;
-const endpoint = createAuthorizationEndpoint(
-	dev
-		? 'http://localhost:3000/auth/ion/callback'
-		: 'https://wheelshare.space/auth/ion/callback'
-);
-
 export default function WheelShareLoggedOut() {
 	return (
 		<>
 			<UIPrimaryTitle>WheelShare</UIPrimaryTitle>
 			<p>To get started, log in with your Ion account.</p>
-			<UILink href={endpoint}>Log in</UILink>
+			<UILink href={authorizationEndpoint}>Log in</UILink>
 		</>
 	);
 }