<?php
/**
 * MainWP API Manager Update Handler
 *
 * This class handles updates for MainWP Extension.
 *
 * @package MainWP API Manager/Update Handler
 */

namespace MainWP\Dashboard;

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

/**
 * Class MainWP_Api_Manager_Plugin_Update
 *
 * MainWP API Manager Update Handler.
 *
 * @package   MainWP API Manager/Update Handler
 * @author    Todd Lahman LLC
 * @copyright Copyright (c) Todd Lahman LLC
 * @since     1.0.0
 */
class MainWP_Api_Manager_Plugin_Update { // phpcs:ignore Generic.Classes.OpeningBraceSameLine.ContentAfterBrace -- NOSONAR.

    /**
     * Protected static variable to hold the instance.
     *
     * @var null Default value.
     */
    protected static $instance = null;

    /**
     * Method instance()
     *
     * @static
     * @return class instance
     */
    public static function instance() {
        if ( is_null( static::$instance ) ) {
            static::$instance = new self();
        }

        return static::$instance;
    }

    /**
     * MainWP_Api_Manager_Plugin_Update constructor.
     *
     * Run each time the class is called.
     */
    public function __construct() {
        // API data.
    }

    /**
     * Create upgrade request API URL.
     *
     * @param array $args       Request arguments.
     *
     * @return string Build URL.
     *
     * @uses \MainWP\Dashboard\MainWP_Api_Manager::get_upgrade_url()
     */
    private function create_upgrade_api_url( $args ) {
        $upgrade_url = esc_url_raw( add_query_arg( 'mainwp-api', 'am-software-api', MainWP_Api_Manager::instance()->get_upgrade_url() ) );

        $query_url = '';
        foreach ( $args as $key => $value ) {
            $query_url .= $key . '=' . rawurlencode( $value ) . '&';
        }
        $query_url = rtrim( $query_url, '&' );

        return $upgrade_url . '&' . $query_url;
    }

    /**
     * Returns plugin information in an array.
     *
     * @param array $plugin Plugin to check.
     *
     * @return array Plugin information.
     */
    public function update_check( $plugin ) {

        $args = array(
            'request'          => 'pluginupdatecheck',
            'plugin_name'      => $plugin['plugin_name'],
            'version'          => $plugin['software_version'],
            'product_id'       => $plugin['product_id'],
            'api_key'          => $plugin['api_key'],
            'instance'         => $plugin['instance'],
            'software_version' => $plugin['software_version'],
            'extra'            => isset( $plugin['extra'] ) ? $plugin['extra'] : '',
        );

        // Check for a plugin update.
        return $this->plugin_information( $args ); // pluginupdatecheck.
    }


    /**
     * Check if bulkupdateapi is true|false & grab domain name adn extensions list.
     *
     * @param array $plugins List of plugins (extensions).
     *
     * @return array Plugin Information & bulkupdatecheck.
     */
    public function bulk_update_check( $plugins ) {

        $args = array(
            'request'    => 'bulkupdatecheck',
            'extensions' => base64_encode( wp_json_encode( $plugins ) ), // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode used for http encoding compatible.
            'json'       => true,
        );

        $mainwp_api_key = MainWP_Api_Manager_Key::instance()->get_decrypt_master_api_key();

        if ( ! empty( $mainwp_api_key ) ) {
            $args['api_key'] = $mainwp_api_key;
        }

        return $this->plugin_information( $args, true ); // bulkupdatecheck.
    }


    /**
     * Check $args, if there is a response, an object exists & response is not false.
     *
     * @param array $args Request arguments.
     *
     * @return array|false $response Plugin information.
     */
    public function request( $args ) {
        $args['request'] = 'plugininformation';

        $response = $this->plugin_information( $args ); // plugininformation.

        // If everything is okay return the response.
        if ( isset( $response ) && is_object( $response ) && false !== $response ) {
            return $response;
        }
        return false;
    }

    /**
     * Sends and receives data to and from the server API.
     *
     * @access      public
     *
     * @param array $args       Request arguments.
     * @param bool  $bulk_check Check if updating in bulk true|false.
     *
     * @return array|false Plugin information.
     * @since       1.0.0
     *
     * @uses \MainWP\Dashboard\MainWP_System_Utility::maybe_unserialyze()
     */
    public function plugin_information( $args, $bulk_check = false ) {

        $args['object'] = MainWP_Api_Manager::instance()->get_domain();

        $target_url = $this->create_upgrade_api_url( $args );
        $default    = array(
            'timeout'   => 150,
            'sslverify' => 1,
        );

        $params = apply_filters( 'mainwp_plugin_information_sslverify', $default, $args );

        $request = wp_remote_get(
            $target_url,
            $params
        );

        if ( is_wp_error( $request ) || wp_remote_retrieve_response_code( $request ) !== 200 ) {
            return false;
        }

        $response = wp_remote_retrieve_body( $request );

        if ( isset( $args['json'] ) ) { // bulkupdatecheck: json.
            $response = json_decode( $response, true );
        } else { // pluginupdatecheck, plugininformation : serialize.
            $response = unserialize( $response ); // phpcs:ignore -- data from extensions, to compatible.
        }

        /**
         * For debugging errors from the API
         * For errors like: unserialize(): Error at offset 0 of 170 bytes
         * Comment out $response above first
         */
        if ( ! $bulk_check ) {
            if ( is_object( $response ) ) {
                if ( isset( $response->package ) ) {
                    $response->package = apply_filters( 'mainwp_api_manager_upgrade_package_url', $response->package, $response );
                }
                return $response;
            }
        } elseif ( is_array( $response ) ) {
            return $response;
        }

        return false;
    }
}

// End of class.