stack/examples/js-example/oauth-script.ts

import { stackClientApp } from "./stack";

// Check if user is already signed in
stackClientApp.getUser().then((user) => {
  if (user) {
    window.location.href = "/";
  }
});

// Handle Google Sign In
document.getElementById("googleSignIn")?.addEventListener("click", async () => {
  try {
    await stackClientApp.signInWithOAuth('google');
  } catch (error) {
    console.error("Google sign in failed:", error);
    alert("Failed to initialize Google sign in");
  }
});

// Handle OAuth redirect
window.addEventListener("load", async () => {
  try {
    const params = new URLSearchParams(window.location.search);
    const code = params.get("code");
    const state = params.get("state");
    
    if (code && state) {
      const user = await stackClientApp.callOAuthCallback();
      if (user) {
        window.location.href = "/";
      }
    }
  } catch (error) {
    console.error("Failed to handle OAuth redirect:", error);
    alert("Authentication failed. Please try again.");
  }
});