<?php
session_start();
require_once 'vendor/autoload.php';
$social_logins = require_once 'config/social_logins.php';

$fb = new Facebook\Facebook([
    'app_id' => $social_logins['facebook']['client_id'],
    'app_secret' => $social_logins['facebook']['client_secret'],
    'default_graph_version' => 'v2.10',
]);

$helper = $fb->getRedirectLoginHelper();
$permissions = ['email']; // Optional permissions
$loginUrl = $helper->getLoginUrl($social_logins['facebook']['redirect_uri'], $permissions);

header('Location: ' . $loginUrl);
exit;