[ 'client_id' => 'YOUR_GOOGLE_CLIENT_ID', 'client_secret' => 'YOUR_GOOGLE_CLIENT_SECRET', 'token_url' => 'https://oauth2.googleapis.com/token', 'userinfo_url' => 'https://www.googleapis.com/oauth2/v2/userinfo', 'redirect_uri' => URL::Link('auth/callback') ] ]; // Check for OAuth errors if ($error) { $error_message = $error_description ?: $error; URL::$fragments['error'] = "OAuth Error: " . htmlspecialchars($error_message); URL::$fragments['error_type'] = 'oauth_error'; } else if ($code && $state) { // Determine which OAuth provider this is for (you'd need to store this during the auth initiation) $service = $_SESSION['oauth_service'] ?? 'google'; if (!isset($oauth_config[$service])) { URL::$fragments['error'] = "Unknown OAuth service: $service"; URL::$fragments['error_type'] = 'invalid_service'; } else { $config = $oauth_config[$service]; // Check if configuration is complete if ($config['client_id'] === 'YOUR_GOOGLE_CLIENT_ID' || $config['client_secret'] === 'YOUR_GOOGLE_CLIENT_SECRET') { URL::$fragments['demo_mode'] = true; URL::$fragments['success'] = "OAuth callback received successfully! (Demo Mode)"; URL::$fragments['code'] = substr($code, 0, 20) . '...'; URL::$fragments['state'] = $state; URL::$fragments['service'] = $service; } else { // STEP 1: Exchange authorization code for access token $token_response = HTTP::post($config['token_url'], [ 'client_id' => $config['client_id'], 'client_secret' => $config['client_secret'], 'code' => $code, 'grant_type' => 'authorization_code', 'redirect_uri' => $config['redirect_uri'] ]); if (!$token_response['success']) { URL::$fragments['error'] = "Token exchange failed: " . ($token_response['error'] ?? 'Unknown error'); URL::$fragments['error_type'] = 'token_exchange_failed'; URL::$fragments['debug'] = $token_response; } else { $tokens = $token_response['data']; $access_token = $tokens['access_token']; // STEP 2: Get user profile information $profile_response = HTTP::get_with_token($config['userinfo_url'], $access_token); if (!$profile_response['success']) { URL::$fragments['error'] = "Failed to get user profile: " . ($profile_response['error'] ?? 'Unknown error'); URL::$fragments['error_type'] = 'profile_fetch_failed'; URL::$fragments['debug'] = $profile_response; } else { $profile = $profile_response['data']; // STEP 3: Create or login user // This is where you'd typically: // 1. Check if user exists by email // 2. Create new user if doesn't exist // 3. Update user profile with OAuth data // 4. Set session variables // For demo purposes, just set session data $_SESSION['user_id'] = $profile['id']; $_SESSION['user_email'] = $profile['email']; $_SESSION['user_name'] = $profile['name']; $_SESSION['user_picture'] = $profile['picture'] ?? null; $_SESSION['oauth_provider'] = $service; $_SESSION['logged_in_at'] = time(); URL::$fragments['success'] = "Successfully logged in with " . ucfirst($service) . "!"; URL::$fragments['user_profile'] = $profile; URL::$fragments['redirect_to'] = 'dashboard'; // Where to redirect after success } } } } // Clean up temporary OAuth session data unset($_SESSION['oauth_service']); unset($_SESSION['oauth_state']); } else { URL::$fragments['error'] = "Invalid OAuth callback - missing required parameters"; URL::$fragments['error_type'] = 'invalid_callback'; } ?>
✗

Authentication Failed

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✓

Authentication Successful

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Demo Mode - Next Steps for Implementation:

Service:

Code:

State:

  1. Configure OAuth credentials
    Replace 'YOUR_GOOGLE_CLIENT_ID' and 'YOUR_GOOGLE_CLIENT_SECRET' with actual values
  2. Exchange authorization code for access token
  3. Use access token to get user profile
  4. Create or login user account
  5. Set session variables
  6. Redirect to dashboard/profile

Complete Implementation Example:

oauth-handler.php 
 $client_id,
    "client_secret" => $client_secret, 
    "code" => $code,
    "grant_type" => "authorization_code",
    "redirect_uri" => $redirect_uri
]);

// Get user profile
$profile_response = HTTP::get_with_token(
    "https://www.googleapis.com/oauth2/v2/userinfo",
    $token_response["data"]["access_token"]
);

// Login/create user
$profile = $profile_response["data"];
$user = User::FindByEmail($profile["email"]) ?: User::Create([
    "email" => $profile["email"],
    "name" => $profile["name"],
    "picture" => $profile["picture"],
    "oauth_provider" => "google",
    "oauth_id" => $profile["id"]
]);

// Set session
$_SESSION["user_id"] = $user["id"];
$_SESSION["user_email"] = $user["email"];
$_SESSION["logged_in_at"] = time();

// Redirect to dashboard
URL::Redirect("dashboard");') ?>
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Debug Information