<?php

class MailsterUpdate {

	private $tracker_obj;


	public function __construct() {

		add_filter( 'plugins_loaded', array( &$this, 'init' ) );

		add_filter( 'upgrader_pre_download', array( &$this, 'upgrader_pre_download' ), 10, 3 );
		add_action( 'after_plugin_row_' . MAILSTER_SLUG, array( &$this, 'add_license_info' ), 10, 3 );
		add_filter( 'upgrader_package_options', array( &$this, 'upgrader_package_options' ) );

		add_action( 'install_plugins_pre_plugin-information', array( &$this, 'add_css_for_information_screen' ) );

		add_action( 'plugins_api_result', array( &$this, 'plugins_api_result' ), 10, 3 );

	}


	public function init() {
		if ( ! class_exists( 'UpdateCenterPlugin' ) ) {
			require_once MAILSTER_DIR . 'classes/UpdateCenterPlugin.php';
		}

		UpdateCenterPlugin::add(
			array(
				'licensecode' => mailster()->license(),
				'remote_url'  => apply_filters( 'mailster_updatecenter_endpoint', 'https://update.mailster.co/' ),
				'plugin'      => MAILSTER_SLUG,
				'slug'        => 'mailster',
			)
		);

		if ( isset( $_GET['mailster_allow_usage_tracking'] ) ) {
			if ( wp_verify_nonce( $_GET['_wpnonce'], 'mailster_allow_usage_tracking' ) ) {
				$track = (bool) $_GET['mailster_allow_usage_tracking'];
				mailster_update_option( 'usage_tracking', $track );
				if ( ! $track ) {
					mailster_update_option( 'ask_usage_tracking', false );
					mailster_notice( esc_html__( 'Thanks, we\'ll respect your opinion. You can always opt in anytime on the advanced tab in the settings!', 'mailster' ), 'info', true );
				}
			}
		}

		if ( mailster_option( 'usage_tracking' ) ) {

			add_filter( 'wisdom_data_mailster', array( &$this, 'modify_tracking' ) );
			$this->tracker();

		}

	}


	public function ask_for_auto_update() {

		if ( function_exists( 'wp_is_auto_update_enabled_for_type' ) && ! $this->is_auto_update() && mailster()->is_verified() ) {

			$link = sprintf( '<a href="%s" class="button button-primary">%s</a>', $this->get_auto_update_url(), esc_html__( 'Enable Auto Updates for Mailster', 'mailster' ) );

			mailster_notice( '<p><strong>' . esc_html__( 'Automatic Updates are not enabled for Mailster!', 'mailster' ) . '</strong></p>' . $link, 'info', 20, 'ask_for_auto_update' );

		}

	}

	public function get_auto_update_url() {
			$query_args = array(
				'action' => 'enable-auto-update',
				'plugin' => MAILSTER_SLUG,
				's'      => MAILSTER_SLUG,
			);
			$url        = add_query_arg( $query_args, 'plugins.php' );

			return wp_nonce_url( $url, 'updates' );

	}

	public function is_auto_update() {

		$auto_updates = (array) get_site_option( 'auto_update_plugins', array() );

		return in_array( MAILSTER_SLUG, $auto_updates );

	}


	public function tracker( $method = null, $args = array() ) {
		if ( ! $this->tracker_obj ) {

			if ( ! class_exists( 'Plugin_Usage_Tracker' ) ) {
				require_once MAILSTER_DIR . 'classes/libs/class-plugin-usage-tracker.php';
			}

			$this->tracker_obj = new Plugin_Usage_Tracker(
				MAILSTER_FILE,
				'https://track.mailster.co',
				false, // options by filter
				false, // opt in form (custom)
				false, // goodbye form (custom)
				false // do not collect email
			);

			if ( ! wp_next_scheduled( 'put_do_weekly_action' ) ) {
				$schedule = $this->tracker_obj->get_schedule();
				wp_schedule_event( time(), $schedule, 'put_do_weekly_action' );
			}
		}

		if ( ! is_null( $method ) ) {
			if ( method_exists( $this->tracker_obj, $method ) ) {
				return call_user_func_array( array( $this->tracker_obj, $method ), $args );
			}
			return false;
		}

		return $this->tracker_obj;
	}

	public function modify_tracking( $body ) {

		$track = array( 'send_offset', 'timezone', 'embed_images', 'track_opens', 'track_clicks', 'track_location', 'track_users', 'tags_webversion', 'gdpr_forms', 'module_thumbnails', 'charset', 'encoding', 'autoupdate', 'system_mail', 'default_template', 'frontpage_public', 'webversion_bar', 'frontpage_pagination', 'share_button', 'hasarchive', 'subscriber_notification', 'unsubscribe_notification', 'do_not_track', 'list_based_opt_in', 'single_opt_out', 'sync', 'register_comment_form', 'register_other', 'interval', 'send_at_once', 'send_limit', 'send_period', 'send_delay', 'cron_service', 'cron_lock', 'deliverymethod', 'bounce_active', 'disable_cache', 'remove_data' );

		$body['plugin_options_fields'] = array();

		foreach ( $track as $option ) {
			$body['plugin_options_fields'][ $option ] = mailster_option( $option );
		}

		$body['plugin_options'] = array_keys( $body['plugin_options_fields'] );

		$body['inactive_plugins'] = array();
		// do not track these.
		unset( $body['email'], $body['marketing_method'] );

		return $body;
	}


	/**
	 *
	 *
	 * @param unknown $reply
	 * @param unknown $package
	 * @param unknown $upgrader
	 * @return unknown
	 */
	public function upgrader_pre_download( $reply, $package, $upgrader ) {

		if ( ( isset( $upgrader->skin->plugin ) && $upgrader->skin->plugin === MAILSTER_SLUG ) ||
			( isset( $upgrader->skin->plugin_info ) && $upgrader->skin->plugin_info['Name'] === 'Mailster - Email Newsletter Plugin for WordPress' ) ) {

			$upgrader->strings['mailster_download'] = esc_html__( 'Downloading the latest version of Mailster', 'mailster' ) . '...';
			$upgrader->skin->feedback( 'mailster_download' );

			$res = $upgrader->fs_connect( array( WP_CONTENT_DIR ) );
			if ( ! $res ) {
				return new WP_Error( 'fs_unavailable', $upgrader->strings['fs_unavailable'] );
			}

			add_filter( 'http_response', array( &$this, 'alter_update_message' ), 10, 3 );
			$download_file = download_url( $package );
			remove_filter( 'http_response', array( &$this, 'alter_update_message' ), 10, 3 );

			if ( is_wp_error( $download_file ) ) {

				$short_msg = isset( $_SERVER['HTTP_REFERER'] ) ? preg_match( '#page=envato-market#', $_SERVER['HTTP_REFERER'] ) : false;

				$upgrader->strings['mailster_download_error'] = esc_html__( 'Not able to download Mailster!', 'mailster' );
				$upgrader->skin->feedback( 'mailster_download_error' );

				$code = $download_file->get_error_message();

				$error_msg = mailster()->get_update_error( $code, $short_msg, esc_html__( 'An error occurred while updating Mailster!', 'mailster' ) );

				switch ( $code ) {

					case 680:
						$error_msg = $error_msg . ' <a href="' . mailster_url( 'https://mailster.co/go/buy' ) . '" target="_blank" rel="noopener"><strong>' . sprintf( esc_html__( 'Buy an additional license for %s.', 'mailster' ), ( mailster_is_local() ? esc_html__( 'your new site', 'mailster' ) : $_SERVER['HTTP_HOST'] ) . '</strong></a>' );

					case 679: // No Licensecode provided
					case 678:
						add_filter( 'update_plugin_complete_actions', array( &$this, 'add_update_action_link' ) );
						add_filter( 'install_plugin_complete_actions', array( &$this, 'add_update_action_link' ) );

						break;

					case 500: // Internal Server Error
					case 503: // Service Unavailable
						$error = esc_html__( 'Authentication servers are currently down. Please try again later!', 'mailster' );
						break;

					default:
						$error = esc_html__( 'An error occurred while updating Mailster!', 'mailster' );
						if ( $error_msg ) {
							$error .= '<br>' . $error_msg;
						}
						break;
				}

				if ( is_a( $upgrader->skin, 'Bulk_Plugin_Upgrader_Skin' ) ) {

					return new WP_Error( 'mailster_download_error', $error_msg );

				} else {

					$upgrader->strings['mailster_error'] = '<div class="error inline"><p><strong>' . $error_msg . '</strong></p></div>';
					$upgrader->skin->feedback( 'mailster_error' );
					$upgrader->skin->result = new WP_Error( 'mailster_download_error', $error_msg );
					return new WP_Error( 'mailster_download_error', '' );

				}
			}

			return $download_file;

		}

		return $reply;

	}


	/**
	 *
	 *
	 * @param unknown $response
	 * @param unknown $r
	 * @param unknown $url
	 * @return unknown
	 */
	public function alter_update_message( $response, $r, $url ) {

		$code = wp_remote_retrieve_response_code( $response );

		$response['response']['message'] = $code;

		return $response;

	}


	public function add_update_action_link( $actions ) {

		$actions['mailster_get_license'] = '<a href="' . mailster_url( 'https://mailster.co/go/buy' ) . '">' . esc_html__( 'Buy a new Mailster License', 'mailster' ) . '</a>';

		return $actions;

	}


	public function plugins_api_result( $res, $action, $args ) {

		if ( is_wp_error( $res ) || ! $res || $res->slug !== 'mailster' ) {
			return $res;
		}

		foreach ( $res->sections as $i => $section ) {
			$res->sections[ $i ] = mailster_links_add_args( $section );
		}

		$res->homepage = mailster_url( $res->homepage );

		return $res;
	}


	public function add_license_info( $plugin_file, $plugin_data, $status ) {

		if ( mailster()->is_outdated() ) {

			echo '<tr class="plugin-update-tr active" id="mailster-update" data-slug="mailster" data-plugin="' . MAILSTER_SLUG . '"><td colspan="4" class="plugin-update colspanchange"><div class="error notice inline notice-error notice-alt"><p><strong>' . sprintf( esc_html__( 'Hey! Looks like you have an outdated version of Mailster! It\'s recommended to keep the plugin up to date for security reasons and new features. Check the %s for the most recent version.', 'mailster' ), '<a href="' . mailster_url( 'https://mailster.co/changelog' ) . '" class="external">' . esc_html__( 'changelog page', 'mailster' ) . '</a>' ) . '</strong></p></td></tr>';

		}
		if ( ! mailster()->is_verified() ) {

			echo '<tr class="plugin-update-tr active" id="mailster-update" data-slug="mailster" data-plugin="' . MAILSTER_SLUG . '"><td colspan="4" class="plugin-update colspanchange"><div class="error notice inline notice-error notice-alt"><p><strong>' . sprintf( esc_html__( 'Hey! Would you like automatic updates and premium support? Please %s of Mailster.', 'mailster' ), '<a href="' . admin_url( 'admin.php?page=mailster_dashboard' ) . '">' . esc_html__( 'activate your copy', 'mailster' ) . '</a>' ) . '</strong></p></td></tr>';

		}

	}

	public function add_css_for_information_screen() {

		// remove ugly h2 headline in plugin info screen for all mailster plugins
		if ( isset( $_GET['plugin'] ) && false !== strpos( $_GET['plugin'], 'mailster' ) ) {
			wp_add_inline_style( 'common', '#plugin-information #plugin-information-title h2{display: none;}' );
		}
	}

	public function upgrader_package_options( $options ) {
		if ( isset( $options['package'] ) && preg_match( '/^mailster-([0-9.]+)-dev\./', basename( $options['package'] ) ) ) {
			$options['clear_destination'] = true;
		}

		return $options;
	}


}