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📄 Source: oauth2callback.php

<?php
session_start();
require_once 'vendor/autoload.php';

// Hardcode the URL
$baseUrl = "http://createcraftweb.playit.plus/AgentAI";

$client = new Google\Client();
$client->setClientId('1082083393389-c5uekspcp2boc1gd0n0gr3v1a5vbb3jg.apps.googleusercontent.com');
$client->setClientSecret('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');
$client->setRedirectUri("$baseUrl/oauth2callback.php");
$client->addScope('https://www.googleapis.com/auth/gmail.readonly');
$client->setAccessType('offline');
$client->setPrompt('consent');

if (isset($_GET['code'])) {
    try {
        // Fetch the token using the authorization code
        $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
        
        if (!isset($token['error'])) {
            $_SESSION['access_token'] = $token;
            
            // Store refresh token separately for persistent login
            if (isset($token['refresh_token'])) {
                $_SESSION['refresh_token'] = $token['refresh_token'];
            }
            
            // Create tmp folder if it doesn't exist
            if (!is_dir(__DIR__ . '/tmp')) {
                mkdir(__DIR__ . '/tmp', 0755, true);
            }
            file_put_contents(__DIR__ . '/tmp/token.json', json_encode($token));
            
            // Set cookie for persistent login (30 days)
            setcookie('inboxzero_logged_in', 'true', time() + (86400 * 30), '/');
            
            // Try to get user email for personalization
            try {
                $oauth2 = new Google\Service\Oauth2($client);
                $userInfo = $oauth2->userinfo->get();
                $_SESSION['user_email'] = $userInfo->email;
            } catch (Exception $e) {
                // Non-critical error
            }
            
            header('Location: index.php');
            exit();
        } else {
            throw new Exception($token['error_description'] ?? 'Unknown error');
        }
    } catch (Exception $e) {
        echo "Authentication failed: " . $e->getMessage();
        echo "<br><a href='index.php'>Try again</a>";
    }
} else {
    echo "No authorization code received.";
    echo "<br><a href='index.php'>Go back</a>";
}
?>