<?php
if (session_status() == PHP_SESSION_NONE) {
	session_start();
}
require_once(userpro_vk_path . 'lib/vendor/autoload.php');
use VK\Client\VKApiClient;
use VK\OAuth\VKOAuth;
use VK\OAuth\Scopes\VKOAuthUserScope;
use VK\OAuth\VKOAuthResponseType;
use VK\OAuth\VKOAuthDisplay;

class userpro_vk_api
{

	var $vk;
	var $vk_config;
	var $client_id, $client_secret, $redirect_uri;

	public function __construct()
	{
		add_action('init', array(&$this, 'loadVK'), 9);


		if (isset($_GET['code']))
			add_action('init', array(&$this, 'getAccesKey'), 10);


		add_action('userpro_social_connect_buttons', array(&$this, 'vk_button'), 9);


	}

	public function loadVK()
	{
		$this->client_id = userpro_vk_get_option('vk_api_id');
		$this->client_secret = userpro_vk_get_option('vk_api_secret');
		$this->redirect_uri = userpro_vk_get_option('vk_signup_redirect') . '/';

		if (userpro_vk_get_option('vk_connect') == 1 && userpro_vk_get_option('vk_api_id') && userpro_vk_get_option('vk_api_secret')) {


			$vk = new VKApiClient();

		}

	}

	/* Get VK button */
	public function vk_button()
	{
		if (userpro_vk_get_option('vk_connect') == 1 && userpro_vk_get_option('vk_api_id') && userpro_vk_get_option('vk_api_secret')) {
			$url = $this->browserUrl();


			?>

            <a href="<?php echo $url ?>" class="userpro-social-vk userpro-tip" title="<?php _e('Login with VK.com', 'userpro-vk'); ?>"></a>

			<?php
		}
	}

	public function browserUrl()
	{

		$oauth = new VKOAuth();
		$display = VKOAuthDisplay::PAGE;
		$scope = array(VKOAuthUserScope::WALL, VKOAuthUserScope::GROUPS);
		$state = rand();

		$browser_url = $oauth->getAuthorizeUrl(VKOAuthResponseType::CODE, $this->client_id, $this->redirect_uri, $display, $scope, $state);


		return $browser_url;

	}

	public function getAccesKey()
	{
		$oauth = new VKOAuth();
		$code = $_GET['code'];

		$response = $oauth->getAccessToken($this->client_id, $this->client_secret, $this->redirect_uri, $code);

		$this->getInfo($response['access_token'], $response['user_id']);


	}

	public function getInfo($access_token, $user_id)
	{
		global $userpro;
		$vk = new VKApiClient();
		$response = $vk->users()->get($access_token, array(
			'user_ids' => array($user_id),
			'fields' => array('uid', 'country', 'first_name', 'last_name', 'photo_big', 'email', 'sex',),
		));

		if (isset($response)) {

			$uid = isset($response['id']) ? $response['id'] : null;

			$user = get_users([
				'meta_key' => 'userpro_vk_id',
				'meta_value' => $uid,
				'meta_compare' => '='
			]);

			if (!empty($user)) {
				$this->update_vk_profile($user[0]->ID, $response);


				$this->vk_auto_login($user[0]->user_login, true);

				exit;

			} else {
				if (!is_user_logged_in())
					$this->register($response);
			}

		}

	}

	public function register($user)
	{

		global $userpro;

		$user_info = [];

		$user_info['id'] = $id = $user[0]['id'];
		$user_info['user_pass'] = wp_generate_password($length = 12, $include_standard_special_chars = false);
		$user_info['first_name'] = $user[0]['first_name'];
		$user_info['last_name'] = $user[0]['last_name'];
		$user_info['photo'] = $user[0]['photo_big'];

		$login_name = sanitize_text_field($user_info['first_name'] . '_' . $user_info['last_name']);


		$password = wp_generate_password($length = 12, $include_standard_special_chars = false);


		$user_id = $this->new_user($login_name, $user_info['user_pass'], '', $user_info, $type = 'vk');

		$this->update_vk_profile($user_id, $user);
//		Add profile image
		$this->add_profile_picture($user_id, $user_info['photo']);

		$this->update_vk_id($user_id, $user_info['id']);

		$this->vk_auto_login($login_name, true);

	}

// Create user
	public function new_user($username, $password, $email, $form, $type, $approved = 1)
	{
		global $userpro;

		if (username_exists($username))
			$username = $username . rand(0, 100);

		$user_id = wp_create_user($username, $password, $email);

		$userpro->default_role($user_id, $form);

		if ($approved == 1) {
			userpro_mail($user_id, 'newaccount', $password, $form);
			do_action('userpro_after_new_registration', $user_id);
		}
		return $user_id;
	}

	public function update_vk_profile($user_id, $user_info)
	{


//	    Display name FirstName_LastName
		$display_name = $user_info[0]['first_name'] . '_' . $user_info[0]['last_name'];
//        gender 1- male , 2-female
		$gender = ($user_info[0]['sex'] == 1) ? 'male' : 'female';

		if (!empty($user_info[0]['country']['title']))
			update_user_meta($user_id, 'country', $user_info[0]['country']['title']);

		if (!empty($display_name)) {
			wp_update_user(array('ID' => $user_id, 'display_name' => $display_name));
			update_user_meta($user_id, 'display_name', $display_name);
			update_user_meta($user_id, 'first_name', $user_info[0]['first_name']);
			update_user_meta($user_id, 'last_name', $user_info[0]['last_name']);
		}
		if (!empty($gender)) {
			update_user_meta($user_id, 'gender', ucfirst($gender));
		}

	}
	/* Update profile picture */


	/* update VK ID */

	public function update_vk_id($user_id, $id)
	{

		update_user_meta($user_id, 'userpro_vk_id', $id);

	}

	public function add_profile_picture($user_id, $image)
	{

		global $userpro;

		$profile_pic = 'profile_picture';

		$userpro->do_uploads_dir($user_id);

		if ($image) {
			$userpro->move_file($user_id, $image, $profile_pic . '.jpg');
			update_user_meta($user_id, 'profilepicture', $userpro->get_uploads_url($user_id) . $profile_pic . '.jpg');
		}

	}

	/* Check if user is vk user */
	public function is_vk_user($user_id)
	{
		$usermeta = get_user_meta($user_id, 'userpro_vk_id', true);
		if ($usermeta)
			return true;
		return false;
	}

	/* Get/show badge for VK! users */
	public function userpro_get_badge($badge, $user_id = null, $tooltip = null)
	{
		global $userpro;
		switch ($badge) {
			case 'vk':
				return '<img class="userpro-profile-badge" src="' . userpro_vk_url . 'img/badge-vk.png' . '" alt="" title="' . __('VK.com Linked', 'userpro') . '" />';
				break;
		}
	}


	public function userpro_auto_login($username, $remember = true)
	{

		if (!empty($username)) {

			if (!is_user_logged_in()) {
				$user = get_user_by('login', $username);
				$user_id = $user->ID;
				wp_set_current_user($user_id, $username);
				wp_set_auth_cookie($user_id, $remember);
				do_action('wp_login', $username, $user);

			} else {
				wp_logout();
				$user = get_user_by('login', $username);
				$user_id = $user->ID;
				wp_set_current_user($user_id, $username);
				wp_set_auth_cookie($user_id, $remember);
				do_action('wp_login', $username, $user);
			}
			ob_end_flush();
		}
	}


	public function vk_auto_login($username, $remember = true)
	{

		if (!is_user_logged_in()) {
		    up_error('loginas veikia ');
			ob_start();
			add_action('init', 'app_output_buffer');

			global $userpro;

			$user = get_user_by('login', $username);
			// Redirect URL //
			if (!is_wp_error($user)) {
				wp_clear_auth_cookie();
				wp_set_current_user($user->ID);
				wp_set_auth_cookie($user->ID);

				wp_safe_redirect($userpro->permalink());

				exit();
			}
			ob_end_flush();
		}
	}


}

$userpro_vk = new userpro_vk_api();