<?php
namespace um\core;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) exit;

if ( ! class_exists( 'Plugin_Updater' ) ) {

    class Plugin_Updater {

        function __construct() {
            //create cron event
            if ( ! wp_next_scheduled( 'um_check_extensions_licenses' ) ) {
                wp_schedule_event( time() + ( 24*60*60 ), 'daily', 'um_check_extensions_licenses' );
            }

            register_deactivation_hook( um_plugin, array( &$this, 'um_plugin_updater_deactivation_hook' ) );

            //cron request to ultimatemember.com
            add_action( 'um_check_extensions_licenses', array( &$this, 'um_checklicenses' ) );

            //update plugin info
            add_filter( 'pre_set_site_transient_update_plugins', array( &$this, 'um_check_update' ) );

            //plugin information info
            add_filter( 'plugins_api', array( &$this, 'um_plugins_api_filter' ), 9999, 3 );
        }

        /**
         * Get all paid UM extensions
         *
         * @return array
         */
        function um_get_active_plugins() {
            $paid_extensions = array(
                'um-bbpress/um-bbpress.php'                             => array(
                    'key'   => 'bbpress',
                    'title' => 'bbPress',
                ),
                'um-followers/um-followers.php'                         => array(
                    'key'   => 'followers',
                    'title' => 'Followers',
                ),
                'um-friends/um-friends.php'                             => array(
                    'key'   => 'friends',
                    'title' => 'Friends',
                ),
                'um-groups/um-groups.php'                               => array(
                    'key'   => 'groups',
                    'title' => 'Groups',
                ),
                'um-instagram/um-instagram.php'                         => array(
                    'key'   => 'instagram',
                    'title' => 'Instagram',
                ),
                'um-invitations/um-invitations.php'                     => array(
                    'key'   => 'invitations',
                    'title' => 'Invitations',
                ),
                'um-mailchimp/um-mailchimp.php'                         => array(
                    'key'   => 'mailchimp',
                    'title' => 'MailChimp',
                ),
                'um-messaging/um-messaging.php'                         => array(
                    'key'   => 'messaging',
                    'title' => 'Messaging',
                ),
                'um-mycred/um-mycred.php'                               => array(
                    'key'   => 'mycred',
                    'title' => 'myCRED',
                ),
                'um-notices/um-notices.php'                             => array(
                    'key'   => 'notices',
                    'title' => 'Notices',
                ),
                'um-notifications/um-notifications.php'                 => array(
                    'key'   => 'notifications',
                    'title' => 'Notifications',
                ),
                'um-profile-completeness/um-profile-completeness.php'   => array(
                    'key'   => 'profile_completeness',
                    'title' => 'Profile Completeness',
                ),
                'um-reviews/um-reviews.php'                             => array(
                    'key'   => 'reviews',
                    'title' => 'Reviews',
                ),
                'um-social-activity/um-social-activity.php'             => array(
                    'key'   => 'activity',
                    'title' => 'Social Activity',
                ),
                'um-social-login/um-social-login.php'                   => array(
                    'key'   => 'social_login',
                    'title' => 'Social Login',
                ),
                'um-user-tags/um-user-tags.php'                         => array(
                    'key'   => 'user_tags',
                    'title' => 'User Tags',
                ),
                'um-verified-users/um-verified-users.php'               => array(
                    'key'   => 'verified_users',
                    'title' => 'Verified Users',
                ),
                'um-woocommerce/um-woocommerce.php'                     => array(
                    'key'   => 'woocommerce',
                    'title' => 'Woocommerce',
                ),
            );

            $the_plugs = get_option( 'active_plugins' );
            $active_um_plugins = array();
            foreach ( $the_plugs as $key => $value ) {

                if ( in_array( $value, array_keys( $paid_extensions ) ) ) {
                    $license = UM()->options()->get( "um_{$paid_extensions[ $value ]['key']}_license_key" );

                    if ( empty( $license ) )
                        continue;

                    $active_um_plugins[ $value ] = $paid_extensions[ $value ];
                    $active_um_plugins[ $value ]['license'] = $license;
                }
            }

            return $active_um_plugins;
        }


        function um_plugin_updater_deactivation_hook() {
            wp_clear_scheduled_hook( 'um_check_extensions_licenses' );
        }


        function um_checklicenses() {
            $exts = $this->um_get_active_plugins();

            if ( 0 == count( $exts ) )
                return;

            require_once( ABSPATH . 'wp-admin/includes/plugin.php' );

            $api_params = array(
                'edd_action' => 'check_licenses',
                'author'     => 'Ultimate Member',
                'url'        => home_url(),
            );

            $api_params['active_extensions'] = array();
            foreach ( $exts as $slug => $data ) {
                $plugin_data = get_plugin_data( ABSPATH . "wp-content/plugins/{$slug}" );

                $api_params['active_extensions'][$slug] = array(
                    'slug'      => $slug,
                    'license'   => $data['license'],
                    'item_name' => str_replace( 'Ultimate Member - ', '', $plugin_data['Name'] ),
                    'version'   => $plugin_data['Version']
                );
            }

            $request = wp_remote_post(
                'https://ultimatemember.com/',
                array(
                    'timeout'   => 15,
                    'sslverify' => false,
                    'body'      => $api_params
                )
            );

            if ( ! is_wp_error( $request ) )
                $request = json_decode( wp_remote_retrieve_body( $request ) );

            $request = ( $request ) ? maybe_unserialize( $request ) : false;

            if ( $request ) {
                foreach ( $exts as $slug => $data ) {
                    if ( ! empty( $request->$slug->license_check ) )
                        update_option( "{$data['key']}_edd_answer", $request->$slug->license_check );

                    if ( ! empty( $request->$slug->get_version_check ) ) {

                        $request->$slug->get_version_check = json_decode( $request->$slug->get_version_check );

                        if ( ! empty( $request->$slug->get_version_check->package ) )
                            $request->$slug->get_version_check->package = $this->extend_download_url( $request->$slug->get_version_check->package, $slug, $data );

                        if ( ! empty( $request->$slug->get_version_check->download_link ) )
                            $request->$slug->get_version_check->download_link = $this->extend_download_url( $request->$slug->get_version_check->download_link, $slug, $data );

                        if ( isset( $request->$slug->get_version_check->sections ) ) {
                            $request->$slug->get_version_check->sections = maybe_unserialize( $request->$slug->get_version_check->sections );
                            $request->$slug->get_version_check = json_encode( $request->$slug->get_version_check );
                        } else {
                            $request->$slug->get_version_check = new \WP_Error( 'plugins_api_failed',
                                sprintf(
                                /* translators: %s: support forums URL */
                                    __( 'An unexpected error occurred. Something may be wrong with https://ultimatemember.com/ or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
                                    __( 'https://wordpress.org/support/' )
                                ),
                                wp_remote_retrieve_body( $request->$slug->get_version_check )
                            );
                        }

                        update_option( "{$data['key']}_version_check_edd_answer", $request->$slug->get_version_check );
                    }
                }
            }

            return;
        }


        /**
         * Check for Updates by request to the marketplace
         * and modify the update array.
         *
         * @param array $_transient_data plugin update array build by WordPress.
         * @return \stdClass modified plugin update array.
         */
        function um_check_update( $_transient_data ) {
            global $pagenow;

            if ( ! is_object( $_transient_data ) )
                $_transient_data = new \stdClass;

            if ( 'plugins.php' == $pagenow && is_multisite() )
                return $_transient_data;

            $exts = $this->um_get_active_plugins();
            foreach ( $exts as $slug => $data ) {

                $plugin_data = get_plugin_data( ABSPATH . "wp-content/plugins/{$slug}" );

                //if response for current product isn't empty check for override
                if ( ! empty( $_transient_data->response ) && ! empty( $_transient_data->response[ $slug ] ) )
                    continue;

                $version_info = get_option( "{$data['key']}_version_check_edd_answer" );
                $version_info = json_decode( $version_info );

                if ( false !== $version_info && is_object( $version_info ) && isset( $version_info->new_version ) ) {
                    //show update version block if new version > then current
                    if ( version_compare( $plugin_data['Version'], $version_info->new_version, '<' ) )
                        $_transient_data->response[ $slug ] = $version_info;

                    $_transient_data->last_checked      = time();
                    $_transient_data->checked[ $slug ]  = $plugin_data['Version'];

                }
            }

            return $_transient_data;
        }


        /**
         * Updates information on the "View version x.x details" popup with custom data.
         *
         * @param mixed   $_data
         * @param string  $_action
         * @param object  $_args
         * @return object $_data
         */
        function um_plugins_api_filter( $_data, $_action = '', $_args = null ) {
            //by default $data = false (from Wordpress)

            if ( $_action != 'plugin_information' )
                return $_data;

            $exts = $this->um_get_active_plugins();

            foreach ( $exts as $slug => $data ) {
                if ( isset( $_args->slug ) && $_args->slug == $slug )
                    $api_request_transient = get_option( "{$data['key']}_version_check_edd_answer" );
            }

            //If we have no transient-saved value, run the API, set a fresh transient with the API value, and return that value too right now.
            if ( ! empty( $api_request_transient ) ) {
                $_data = json_decode( $api_request_transient );
            }

            if ( isset( $_data->sections ) )
                $_data->sections = (array)$_data->sections;

            return $_data;
        }


        /**
         * Disable SSL verification in order to prevent download update failures
         *
         * @param array   $args
         * @param string  $url
         * @return array $array
         */
        function http_request_args( $args, $url ) {
            // If it is an https request and we are performing a package download, disable ssl verification
            if ( strpos( $url, 'https://' ) !== false && strpos( $url, 'action=package_download' ) ) {
                $args['sslverify'] = false;
            }
            return $args;
        }


        function extend_download_url( $download_url, $slug, $data ) {

            $url = get_site_url( get_current_blog_id() );
            $domain  = strtolower( urlencode( rtrim( $url, '/' ) ) );

            $plugin_data = get_plugin_data( ABSPATH . "wp-content/plugins/{$slug}" );

            $api_params = array(
                'action'        => 'get_last_version',
                'license'       => ! empty( $data['license'] ) ? $data['license'] : '',
                'item_name'     => str_replace( 'Ultimate Member - ', '', $plugin_data['Name'] ),
                'blog_id'       => get_current_blog_id(),
                'site_url'      => urlencode( $url ),
                'domain'        => urlencode( $domain ),
                'slug'          => urlencode( $slug ),
            );

            $download_url = add_query_arg( $api_params, $download_url );

            return $download_url;
        }
    }

}