feat: refactor/reorganize auth routes

app/routes/auth/oidc-callback.ts

@@ -0,0 +1,17 @@
+import { LoaderFunctionArgs, data } from '@remix-run/node'
+import { loadContext } from '~/utils/config/headplane'
+import { finishOidc } from '~/utils/oidc'
+
+export async function loader({ request }: LoaderFunctionArgs) {
+	try {
+		const context = await loadContext()
+		if (!context.oidc) {
+			throw new Error('An invalid OIDC configuration was provided')
+		}
+
+		return finishOidc(context.oidc, request)
+	} catch (error) {
+		// Gracefully present OIDC errors
+		return data({ error }, { status: 500 })
+	}
+}