<?php
declare(strict_types=1);

/**
 * class OneComCheckUpdates
 */
#[\AllowDynamicProperties]
class OnecomCheckUpdates extends OnecomHealthMonitor {

	public function __construct() {
		$this->cms_update = "<a href='https://help.one.com/hc/%s/articles/360001621938-How-do-I-update-a-CMS-like-WordPress-and-Joomla-' target='_blank'>";
	}

	public function php_updates() {
		$this->log_entry( 'Scanning available site updates -- PHP version' );
		$php_updates_available = version_compare( PHP_VERSION, '8.2.0', '<' );
		$this->log_entry( 'Finished scaanning available site updates -- PHP version' );

		$guide_link = sprintf( "<a href='https://help.one.com/hc/%s/articles/360000449117-How-do-I-update-PHP-for-my-WordPress-site-' target='_blank'>", onecom_generic_locale_link( '', get_locale(), 1 ) );

		if ( $php_updates_available ) {
			$title  = __( 'PHP version', 'onecom-wp' );
			$desc   = sprintf( __( 'You are running an outdated version of PHP. We recommend using the latest version of PHP. %sHow do I update PHP for my WordPress site?%s', 'onecom-wp' ), "<a href=" . $guide_link .">","</a>" );
			$status = $this->flag_open;
		} else {
			$title  = __( 'You have the latest PHP version enabled!', 'onecom-wp' );
			$desc   = '';
			$status = $this->flag_resolved;
		}
		$this->log_entry( 'Finished scan for PHP version' );
		// @todo: make this functional
		//      oc_sh_save_result( 'php_updates', $result[ $this->status_key ] );

		return $this->format_result( $status, $title, $desc );
	}

	public function plugin_updates() {
		$result = array();
		// plugin updates
		$plugin_updates_available = false;
		$plugin_transients        = get_site_transient( 'update_plugins' );
		$this->log_entry( 'Scanning available site updates -- Plugins' );
		if ( isset( $plugin_transients->response ) && count( $plugin_transients->response ) > 0 ) {
			$plugin_updates_available = true;
		}
		$this->log_entry( 'Finished scanning available site updates -- Plugins' );

		$guide_link = sprintf( $this->cms_update, onecom_generic_locale_link( '', get_locale(), 1 ) );
		$list       = array();
		if ( $plugin_updates_available ) {
			$title   = __( 'Plugins', 'onecom-wp' );
			$desc    = sprintf( __( 'One or more of your plugins are outdated. Outdated plugins make your site vulnerable to security attacks. %sUpdate your Plugins to the newest version%s', 'onecom-wp' ), $guide_link, '</a>' );
			$status  = $this->flag_open;
			$plugins = get_plugins();
			foreach ( $plugin_transients->response as $key => $plugin ) {
				if ( isset( $plugin->plugin ) ) {
					$list[] = $this->get_plugin_name( $plugin->plugin, $plugins );
				} else {
					$list[] = $this->get_plugin_name( $key, $plugins );
				}
			}
		} else {
			$title  = __( 'All your plugins are updated', 'onecom-wp' );
			$desc   = '';
			$status = $this->flag_resolved;
		}

		$this->log_entry( 'Finished scan for available plugin updates' );

		$result         = $this->format_result( $status, $title, $desc );
		$result['list'] = $list;

		return $result;
	}

	public function theme_updates() {
		//theme updates
		$this->log_entry( 'Scanning available site updates -- Themes' );
		$theme_update_available = false;
		$theme_transients       = get_site_transient( 'update_themes' );
		if ( isset( $theme_transients->response ) && ( count( $theme_transients->response ) > 0 ) ) {
			$theme_update_available = true;
		}
		$this->log_entry( 'Finished scanning available site updates -- Themes' );
		$list = array();
		if ( $theme_update_available ) {

			foreach ( $theme_transients->response as $theme_dir => $theme ) {
				$theme = wp_get_theme( $theme_dir );
				if ( is_a( $theme, 'WP_Theme' ) ) {
					$list[] = $theme->get( 'Name' );
				}
			}
			$status = $this->flag_open;
		} else {
			$status = $this->flag_resolved;
		}
		$this->log_entry( 'Finished scan for available theme updates' );
		$result = $this->format_result( $status );
		sort( $list );
		$result['list'] = $list;
		return $result;
	}

	/**
	 * Check if wordpress core is updated
	 * @return array
	 */
	public function check_wp_updates(): array {
		//core updates
		$this->log_entry( 'Scanning available site updates -- Core' );
		$core_update_available = false;
		$core_transients       = get_site_transient( 'update_core' );
		if ( $core_transients->updates && is_array( $core_transients->updates ) ) {
			foreach ( $core_transients->updates as $updates ) {
				if ( isset( $updates->response ) && $updates->response === 'upgrade' ) {
					$core_update_available = true;
				}
			}
		}

		$guide_link = sprintf( $this->cms_update, onecom_generic_locale_link( '', get_locale(), 1 ) );

		if ( $core_update_available ) {
			$status = $this->flag_open;
			$title  = __( 'WordPress version', 'onecom-wp' );
			$desc   = sprintf( __( 'Update WordPress to the latest version, especially minor updates are important because they usually include security fixes. Check this guide for more instructions:  %sHow do I update a CMS like WordPress?%s', 'onecom-wp' ), $guide_link, '</a>' );
		} else {
			$title  = __( 'Your WordPress version is updated', 'onecom-wp' );
			$desc   = '';
			$status = $this->flag_resolved;
		}
		$this->log_entry( 'Finished scaanning available site updates -- Core' );

		//@todo     oc_sh_save_result( 'core_updates', $result[ $this->status_key ] );

		return $this->format_result( $status, $title, $desc );
	}

	public function check_wp_connection() {
		$this->log_entry( 'Checking connections to WordPress.org' );
		$wp_org_connection = $this->check_connection();
		if ( $wp_org_connection[ $this->status_key ] == $this->flag_open ) {
			$this->log_entry( 'Could not connect to WordPress.org' );

			return $wp_org_connection;
		} else {
			$status = $this->flag_resolved;
			$title  = __( 'Connection to Wordpress.org was successful', 'onecom-wp' );
			$desc   = '';
		}
		$result = $this->format_result( $status, $title, $desc );

		//@todo     oc_sh_save_result( 'wp_connection', $result[ $this->status_key ] );

		return $result;
	}

	public function check_connection() {
		include ABSPATH . WPINC . '/version.php';
		global $wp_version;

		$guide_link = sprintf( "<a href='https://help.one.com/hc/%s' target='_blank'>", onecom_generic_locale_link( '', get_locale(), 1 ) );
		$title      = __( 'Connection to Wordpress.org', 'onecom-wp' );
		try {
			if ( function_exists( 'get_core_checksums' ) ) {
				$checksums = get_core_checksums( $wp_version, 'en_US' );
			} else {
				// if the function does not exist at this point. simply mark this test as success. Chances of actual failure are negligible on production.
				$checksums = true;
			}
		} catch ( Exception $e ) {
			$status = $this->flag_open;
			$desc   = sprintf( __( 'Your site could not connect to wordpress.org, which means background updates may not be working properly. %Contact support%s', 'onecom-wp' ), $guide_link, '</a>' );

			return $this->format_result( $status, $title, $desc );
		}
		if ( ! $checksums ) {
			$status = $this->flag_open;
			$desc   = sprintf( __( 'Your site could not connect to wordpress.org, which means background updates may not be working properly. %Contact support%s', 'onecom-wp' ), $guide_link, '</a>' );
		} else {
			$status = $this->flag_resolved;
			$title  = __( 'Background updates are working properly.', 'onecom-wp' );
			$desc   = '';
		}

		return $this->format_result( $status, $title, $desc );
	}

	public function check_auto_updates() {

		$this->log_entry( 'Checking if CORE updates can be carried out' );
		$core_updates_disabled = false;
		if ( ( defined( 'WP_AUTO_UPDATE_CORE' ) && WP_AUTO_UPDATE_CORE === false ) || ( defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED === true ) ) {
			$core_updates_disabled = true;
		}
		if ( has_filter( 'automatic_updater_disabled', '__return_true' ) || has_filter( 'auto_update_core', '__return_false' ) ) {
			$core_updates_disabled = true;
		}

		$this->log_entry( 'Checking connections to wordpress.org' );
		$wp_org_connection = $this->check_connection();
		if ( $wp_org_connection[ $this->status_key ] == $this->flag_open ) {
			$this->log_entry( 'Could not connect to wordpress.org' );
		}

		if ( $core_updates_disabled ) {
			$result = $this->format_result( $this->flag_open );
		} else {
			$result = $this->format_result( $this->flag_resolved );
		}

		//@todo     oc_sh_save_result( 'auto_updates', $result[ $this->status_key ] );

		return $result;
	}

	public function get_plugin_name( string $file = '', array $plugins = array() ): string {
		$name = $file;
		foreach ( $plugins as $key => $plugin ) {
			if ( strpos( $key, $file ) === 0 ) {
				$name = $plugin['Name'];
			}
		}

		return $name;
	}
}