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<?php |
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|
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/** |
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* Plugin Installer. |
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* This class is responsible for installing and activating plugins. This could be from wp.org and external sources. |
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* |
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* @package Merchant |
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*/ |
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|
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// Exit if accessed directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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if ( ! class_exists( 'Merchant_Plugin_Installer' ) ) { |
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|
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class Merchant_Plugin_Installer { |
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|
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/** |
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* Constructor. |
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* |
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*/ |
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public function __construct() { |
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add_action( 'admin_init', array( $this, 'init' ) ); |
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} |
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|
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/** |
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* Initialize the class. |
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* |
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* @return void |
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*/ |
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public function init() { |
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if ( ! is_admin() ) { |
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return; |
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} |
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|
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if ( ! current_user_can( 'install_plugins' ) ) { |
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return; |
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} |
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|
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add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); |
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add_action( 'wp_ajax_merchant_install_plugin', array( $this, 'install_plugin' ) ); |
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add_action( 'wp_ajax_merchant_install_external_plugin', array( $this, 'install_external_plugin' ) ); |
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} |
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|
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/** |
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* Enqueue scripts. |
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* |
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* @return void |
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*/ |
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public function enqueue_scripts() { |
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wp_enqueue_script( 'merchant-plugin-installer', MERCHANT_URI . '/assets/js/admin/plugin-installer.min.js', array( 'jquery' ), MERCHANT_VERSION, true ); |
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|
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wp_localize_script( 'merchant-plugin-installer', 'merchantPluginInstallerConfig', array( |
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'ajax_url' => admin_url( 'admin-ajax.php' ), |
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'nonce' => wp_create_nonce( 'merchant_plugin_installer_nonce' ), |
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'i18n' => array( |
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'defaultText' => esc_html__( 'Install and Activate', 'merchant' ), |
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'installingText' => esc_html__( 'Installing...', 'merchant' ), |
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'activatingText' => esc_html__( 'Activating...', 'merchant' ), |
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), |
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) ); |
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} |
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|
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/** |
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* Install plugin. |
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* This method is responsible for installing plugins from the wp.org. |
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* |
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* @return void |
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*/ |
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public function install_plugin() { |
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// TODO: Implement this method. |
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} |
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|
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/** |
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* Install and activate an external plugin. |
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* Handles three states: already active, installed but inactive, not installed. |
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* |
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* @return void |
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*/ |
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public function install_external_plugin() { |
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list( $url, $plugin_name ) = $this->validate_install_request(); |
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|
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$state = $this->get_plugin_state( $plugin_name ); |
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|
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// Already active — nothing to do. |
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if ( 'active' === $state ) { |
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wp_send_json_success( array( 'message' => esc_html__( 'Plugin is already active.', 'merchant' ) ) ); |
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} |
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|
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// Not installed — download and install first. |
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if ( 'not_installed' === $state ) { |
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$install_result = $this->install_from_url( $url ); |
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|
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if ( is_wp_error( $install_result ) ) { |
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wp_send_json_error( array( 'message' => $install_result->get_error_message() ) ); |
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} |
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} |
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|
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// Activate the plugin (covers both 'installed' and freshly installed). |
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$activate_result = $this->activate( $plugin_name ); |
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|
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if ( is_wp_error( $activate_result ) ) { |
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wp_send_json_error( array( 'message' => $activate_result->get_error_message() ) ); |
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} |
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|
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wp_send_json_success( array( 'message' => esc_html__( 'Plugin activated successfully.', 'merchant' ) ) ); |
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} |
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|
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/** |
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* Validate the install request. |
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* Checks nonce, capability, and required parameters. |
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* Sends a JSON error and dies if validation fails. |
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* |
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* @return array{0: string, 1: string} The validated URL and plugin name. |
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*/ |
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private function validate_install_request() { |
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check_ajax_referer( 'merchant_plugin_installer_nonce', 'nonce' ); |
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|
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if ( ! current_user_can( 'install_plugins' ) ) { |
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wp_send_json_error( array( 'message' => esc_html__( 'You do not have permission to install plugins.', 'merchant' ) ) ); |
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} |
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|
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if ( empty( $_POST['url'] ) ) { |
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wp_send_json_error( array( 'message' => esc_html__( 'Plugin URL is required.', 'merchant' ) ) ); |
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} |
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|
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if ( empty( $_POST['plugin_name'] ) ) { |
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wp_send_json_error( array( 'message' => esc_html__( 'Plugin name is required.', 'merchant' ) ) ); |
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} |
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|
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return array( |
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esc_url_raw( $_POST['url'] ), // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized |
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sanitize_text_field( wp_unslash( $_POST['plugin_name'] ) ), |
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); |
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} |
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|
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/** |
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* Determine the current state of a plugin. |
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* |
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* @param string $plugin_name The plugin basename (e.g. 'athemes-patcher/athemes-patcher.php'). |
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* |
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* @return string One of 'active', 'installed', or 'not_installed'. |
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*/ |
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private function get_plugin_state( $plugin_name ) { |
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if ( is_plugin_active( $plugin_name ) ) { |
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return 'active'; |
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} |
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|
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$plugin_file = WP_PLUGIN_DIR . '/' . $plugin_name; |
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|
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if ( file_exists( $plugin_file ) ) { |
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return 'installed'; |
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} |
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|
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return 'not_installed'; |
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} |
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|
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/** |
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* Download and install a plugin from an external URL. |
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* Uses `overwrite_package` to handle leftover directories from failed installs. |
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* |
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* @param string $url The URL to the plugin ZIP file. |
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* |
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* @return true|WP_Error True on success, WP_Error on failure. |
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*/ |
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private function install_from_url( $url ) { |
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include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; |
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require_once MERCHANT_DIR . 'admin/classes/class-merchant-silent-upgrader-skin.php'; |
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|
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$skin = new Merchant_Silent_Upgrader_Skin(); |
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$upgrader = new Plugin_Upgrader( $skin ); |
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$result = $upgrader->install( $url, array( 'overwrite_package' => true ) ); |
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|
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if ( is_wp_error( $result ) ) { |
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return new WP_Error( |
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'merchant_install_failed', |
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$this->get_user_friendly_error( $result ) |
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); |
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} |
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|
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if ( ! $result ) { |
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$captured = $skin->get_captured_errors(); |
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$error_message = ! empty( $captured ) ? $captured[0] : ''; |
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|
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$error = new WP_Error( 'download_failed', $error_message ); |
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|
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return new WP_Error( |
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'merchant_install_failed', |
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$this->get_user_friendly_error( $error ) |
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); |
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} |
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|
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return true; |
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} |
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|
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/** |
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* Get a user-friendly error message based on the error type. |
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* |
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* @param WP_Error $error The WP_Error object. |
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* |
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* @return string User-friendly error message. |
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*/ |
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private function get_user_friendly_error( WP_Error $error ) { |
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$error_code = $error->get_error_code(); |
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$error_message = $error->get_error_message(); |
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$error_data = $error->get_error_data(); |
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|
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// Ensure error_message is a string for strpos() calls |
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if ( ! is_string( $error_message ) ) { |
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$error_message = ''; |
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} |
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|
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// Extract HTTP status code if available |
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$http_code = null; |
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if ( is_array( $error_data ) && isset( $error_data['status'] ) && is_int( $error_data['status'] ) ) { |
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$http_code = $error_data['status']; |
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} |
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|
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// Check for 403 Forbidden (server blocking the download) |
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if ( 403 === $http_code || strpos( $error_message, '403' ) !== false || strpos( $error_message, 'Forbidden' ) !== false ) { |
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return esc_html__( 'The download is currently unavailable. Please try again later or contact support for assistance.', 'merchant' ); |
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} |
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|
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// Check for server errors (500, 502, 503) |
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if ( in_array( $http_code, array( 500, 502, 503 ), true ) || |
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strpos( $error_message, '500' ) !== false || |
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strpos( $error_message, '502' ) !== false || |
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strpos( $error_message, '503' ) !== false || |
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strpos( $error_message, 'Internal Server Error' ) !== false || |
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strpos( $error_message, 'Bad Gateway' ) !== false || |
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strpos( $error_message, 'Service Unavailable' ) !== false ) { |
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return esc_html__( 'The download server is temporarily unavailable. Please try again in a few minutes.', 'merchant' ); |
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} |
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|
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// Check for rate limiting (429) |
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if ( 429 === $http_code || strpos( $error_message, '429' ) !== false || strpos( $error_message, 'Too Many Requests' ) !== false ) { |
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return esc_html__( 'Too many download requests. Please wait a moment and try again.', 'merchant' ); |
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} |
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|
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// Check for network/connectivity errors |
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if ( in_array( $error_code, array( 'http_request_failed', 'http_no_url', 'http_404' ), true ) ) { |
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return esc_html__( 'The server could not connect to the download source. Please try again or contact your hosting provider if the problem persists.', 'merchant' ); |
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} |
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|
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// Check for download failures |
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if ( strpos( $error_message, 'Download failed' ) !== false ) { |
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return esc_html__( 'The download could not be completed. Please try again or install the plugin manually.', 'merchant' ); |
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} |
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|
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// Generic fallback |
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return esc_html__( 'Installation failed. Please try again or contact support if the problem persists.', 'merchant' ); |
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} |
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|
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/** |
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* Activate a plugin. |
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* |
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* @param string $plugin_name The plugin basename (e.g. 'athemes-patcher/athemes-patcher.php'). |
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* |
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* @return true|WP_Error True on success, WP_Error on failure. |
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*/ |
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private function activate( $plugin_name ) { |
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$result = activate_plugin( $plugin_name ); |
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|
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if ( is_wp_error( $result ) ) { |
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return $result; |
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} |
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|
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return true; |
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} |
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} |
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|
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new Merchant_Plugin_Installer(); |
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} |
