Algowoo\Algolia_Woo_Indexer

Complexity

Total Complexity

62

Size/Duplication

Total Lines	654
Duplicated Lines	0 %

Importance

Changes	33
Bugs	0	Features	1

21 Methods

Rating	Name	Duplication	Size	Complexity
A	algolia_woo_indexer_index_name_output()	0	7	2
A	send_new_product_to_algolia()	0	6	3
A	algolia_woo_indexer_section_text()	0	3	1
B	init()	0	56	6
A	maybe_send_products()	0	4	2
A	setup_settings_sections()	0	57	2
A	algolia_woo_indexer_application_id_output()	0	7	2
A	__construct()	0	3	1
A	algolia_woo_indexer_automatically_send_new_products_output()	0	10	2
B	update_settings_options()	0	66	11
A	algolia_woo_indexer_admin_api_key_output()	0	9	2
A	check_algolia_input_values()	0	12	4
A	can_connect_to_algolia()	0	13	2
A	get_instance()	0	6	2
B	send_products_to_algolia()	0	114	9
A	deactivate_plugin()	0	3	1
A	admin_menu()	0	9	1
A	load_textdomain()	0	3	1
A	algolia_woo_indexer_settings()	0	21	2
A	settings_fields_validate_options()	0	9	1
A	activate_plugin()	0	39	5

<?php
/**
 * Main Algolia Woo Indexer class
 * Called from main plugin file algolia-woo-indexer.php
 *
 * @package algolia-woo-indexer
 */

namespace Algowoo;

use \Algowoo\Algolia_Check_Requirements as Algolia_Check_Requirements;
use \Algowoo\Algolia_Verify_Nonces as Algolia_Verify_Nonces;

/**
 * Abort if this file is called directly
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Include plugin file if function is_plugin_active does not exist
 */
if (! function_exists('is_plugin_active')) {
    require_once(ABSPATH . '/wp-admin/includes/plugin.php');
}

/**
 * Define the plugin version and the database table name
 */
define( 'ALGOWOO_DB_OPTION', '_algolia_woo_indexer' );
define( 'ALGOWOO_CURRENT_DB_VERSION', '0.3' );

/**
 * Define application constants
 */
define( 'CHANGE_ME', 'change me' );

/**
 * Database table names
 */
define('INDEX_NAME', '_index_name');
define('AUTOMATICALLY_SEND_NEW_PRODUCTS', '_automatically_send_new_products');
define('ALGOLIA_APPLICATION_ID', '_application_id');
define('ALGOLIA_API_KEY', '_admin_api_key');

if (! class_exists('Algolia_Woo_Indexer')) {
    /**
     * Algolia WooIndexer main class
     */
    class Algolia_Woo_Indexer
    {
        const PLUGIN_NAME      = 'Algolia Woo Indexer';
        const PLUGIN_TRANSIENT = 'algowoo-plugin-notice';

        /**
         * Class instance
         *
         * @var object
         */
        private static $instance;

        /**
         * The plugin URL
         *
         * @var string
         */
        private static $plugin_url = '';

        /**
         * The Algolia instance
         *
         * @var \Algolia\AlgoliaSearch\SearchClient
         */
        private static $algolia = null;

        /**
         * Class constructor
         *
         * @return void
         */
        public function __construct()
        {
            $this->init();
        }

        /**
         * Setup sections and fields to store and retrieve values from Settings API
         *
         * @return void
         */
        public static function setup_settings_sections()
        {
            /**
            * Setup arguments for settings sections and fields
            *
            * @see https://developer.wordpress.org/reference/functions/register_setting/
            */
            if (is_admin()) {
                $arguments = array(
                    'type'              => 'string',
                    'sanitize_callback' => 'settings_fields_validate_options',
                    'default'           => null,
                );
                register_setting('algolia_woo_options', 'algolia_woo_options', $arguments);

                /**
                 * Make sure we reference the instance of the current class by using self::get_instance()
                 * This way we can setup the correct callback function for add_settings_section and add_settings_field
                 */
                $algowooindexer = self::get_instance();

                /**
                 * Add our necessary settings sections and fields
                 */
                add_settings_section(
                    'algolia_woo_indexer_main',
                    esc_html__('Algolia Woo Plugin Settings', 'algolia-woo-indexer'),
                    array( $algowooindexer, 'algolia_woo_indexer_section_text' ),
                    'algolia_woo_indexer'
                );
                add_settings_field(
                    'algolia_woo_indexer_application_id',
                    esc_html__('Application ID', 'algolia-woo-indexer'),
                    array( $algowooindexer, 'algolia_woo_indexer_application_id_output' ),
                    'algolia_woo_indexer',
                    'algolia_woo_indexer_main'
                );
                add_settings_field(
                    'algolia_woo_indexer_admin_api_key',
                    esc_html__('Admin API Key', 'algolia-woo-indexer'),
                    array( $algowooindexer, 'algolia_woo_indexer_admin_api_key_output' ),
                    'algolia_woo_indexer',
                    'algolia_woo_indexer_main'
                );
                add_settings_field(
                    'algolia_woo_indexer_index_name',
                    esc_html__('Index name (will be created if not existing)', 'algolia-woo-indexer'),
                    array( $algowooindexer, 'algolia_woo_indexer_index_name_output' ),
                    'algolia_woo_indexer',
                    'algolia_woo_indexer_main'
                );
                add_settings_field(
                    'algolia_woo_indexer_automatically_send_new_products',
                    esc_html__('Automatically index new products', 'algolia-woo-indexer'),
                    array( $algowooindexer, 'algolia_woo_indexer_automatically_send_new_products_output' ),
                    'algolia_woo_indexer',
                    'algolia_woo_indexer_main'
                );
            }
        }

        /**
         * Output for admin API key field
         *
         * @see https://developer.wordpress.org/reference/functions/wp_nonce_field/
         *
         * @return void
         */
        public static function algolia_woo_indexer_admin_api_key_output()
        {
            $api_key = get_option(ALGOWOO_DB_OPTION . ALGOLIA_API_KEY);
            $api_key = is_string($api_key) ? $api_key : CHANGE_ME;

            wp_nonce_field('algolia_woo_indexer_admin_api_nonce_action', 'algolia_woo_indexer_admin_api_nonce_name');

            echo "<input id='algolia_woo_indexer_admin_api_key' name='algolia_woo_indexer_admin_api_key[key]'
				type='text' value='" . esc_attr($api_key) . "' />";
        }

        /**
         * Output for application ID field
         *
         * @return void
         */
        public static function algolia_woo_indexer_application_id_output()
        {
            $application_id = get_option(ALGOWOO_DB_OPTION . ALGOLIA_APPLICATION_ID);
            $application_id = is_string($application_id) ? $application_id : CHANGE_ME;

            echo "<input id='algolia_woo_indexer_application_id' name='algolia_woo_indexer_application_id[id]'
				type='text' value='" . esc_attr($application_id) . "' />";
        }

        /**
         * Output for index name field
         *
         * @return void
         */
        public static function algolia_woo_indexer_index_name_output()
        {
            $index_name = get_option(ALGOWOO_DB_OPTION . INDEX_NAME);
            $index_name = is_string($index_name) ? $index_name : CHANGE_ME;

            echo "<input id='algolia_woo_indexer_index_name' name='algolia_woo_indexer_index_name[name]'
				type='text' value='" . esc_attr($index_name) . "' />";
        }
        
        /**
         * Output for checkbox to check if we automatically send new products to Algolia
         *
         * @return void
         */
        public static function algolia_woo_indexer_automatically_send_new_products_output()
        {
            /**
             * Sanitization is not really needed as the variable is not directly echoed
             * But I have still done it to be 100% safe
             */
            $automatically_send_new_products = get_option(ALGOWOO_DB_OPTION . AUTOMATICALLY_SEND_NEW_PRODUCTS);
            $automatically_send_new_products = (! empty($automatically_send_new_products)) ? 1 : 0; ?>
			<input id="algolia_woo_indexer_automatically_send_new_products" name="algolia_woo_indexer_automatically_send_new_products[checked]"
			type="checkbox" <?php checked(1, $automatically_send_new_products); ?> />
			<?php
        }

        /**
         * Section text for plugin settings section text
         *
         * @return void
         */
        public static function algolia_woo_indexer_section_text()
        {
            echo esc_html__('Enter your settings here', 'algolia-woo-indexer');
        }

        /**
         * Check if we are going to send products by verifying send products nonce
         *
         * @return void
         */
        public static function maybe_send_products()
        {
            if (true === Algolia_Verify_Nonces::verify_send_products_nonce()) {
                self::send_products_to_algolia();
            }
        }

        /**
         * Initialize class, setup settings sections and fields
         *
         * @return void
         */
        public static function init()
        {

            /**
             * Fetch the option to see if we are going to automatically send new products
             */
            $automatically_send_new_products = get_option(ALGOWOO_DB_OPTION . AUTOMATICALLY_SEND_NEW_PRODUCTS);

            /**
             * Check that we have the minimum versions required and all of the required PHP extensions
             */
            Algolia_Check_Requirements::check_unmet_requirements();

            if (! Algolia_Check_Requirements::algolia_wp_version_check() || ! Algolia_Check_Requirements::algolia_php_version_check()) {
                add_action(
                    'admin_notices',
                    function () {
                        echo '<div class="error notice">
                                  <p>' . esc_html__('Please check the server requirements for Algolia Woo Indexer. <br/> It requires minimum PHP version 7.2 and WordPress version 5.0', 'algolia-woo-indexer') . '</p>
                                </div>';
                    }
                );
            }

            $ob_class = get_called_class();

            /**
             * Setup translations
             */
            add_action('plugins_loaded', array( $ob_class, 'load_textdomain' ));

            /**
             * Add actions to setup admin menu
             */
            if (is_admin()) {
                add_action('admin_menu', array( $ob_class, 'admin_menu' ));
                add_action('admin_init', array( $ob_class, 'setup_settings_sections' ));
                add_action('admin_init', array( $ob_class, 'update_settings_options' ));
                add_action('admin_init', array( $ob_class, 'maybe_send_products' ));

                /**
                 * Register hook to automatically send new products if the option is set
                 */

                if ('1' === $automatically_send_new_products) {
                    add_action('save_post', array( $ob_class, 'send_new_product_to_algolia' ), 10, 3);
                }

                self::$plugin_url = admin_url('options-general.php?page=algolia-woo-indexer-settings');

                if (! is_plugin_active('woocommerce/woocommerce.php')) {
                    add_action(
                        'admin_notices',
                        function () {
                            echo '<div class="error notice">
								  <p>' . esc_html__('WooCommerce plugin must be enabled for Algolia Woo Indexer to work.', 'algolia-woo-indexer') . '</p>
								</div>';
                        }
                    );
                }
            }
        }

        /**
         * Send a single product to Algolia once a new product has been published
         *
         * @param int   $post_id ID of the product.
         * @param array $post Post array.
         *
         * @return void
         */
        public static function send_new_product_to_algolia($post_id, $post)
        {
            if ('publish' !== $post->post_status || 'product' !== $post->post_type) {
                return;
            }
            self::send_products_to_algolia($post_id);
        }

        /**
         * Verify nonces before we update options and settings
         * Also retrieve the value from the send_products_to_algolia hidden field to check if we are sending products to Algolia
         *
         * @return void
         */
        public static function update_settings_options()
        {
            Algolia_Verify_Nonces::verify_settings_nonce();

            /**
             * Do not proceed if we are going to send products
             */
            if (true === Algolia_Verify_Nonces::verify_send_products_nonce()) {
                return;
            }

            /**
             * Filter the application id, api key, index name and verify that the input is an array
             *
             * @see https://www.php.net/manual/en/function.filter-input.php
             */
            $post_application_id             = filter_input(INPUT_POST, 'algolia_woo_indexer_application_id', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY);
            $post_api_key                    = filter_input(INPUT_POST, 'algolia_woo_indexer_admin_api_key', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY);
            $post_index_name                 = filter_input(INPUT_POST, 'algolia_woo_indexer_index_name', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY);
            $automatically_send_new_products = filter_input(INPUT_POST, 'algolia_woo_indexer_automatically_send_new_products', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY);

            /**
             * Properly sanitize text fields before updating data
             *
             * @see https://developer.wordpress.org/reference/functions/sanitize_text_field/
             */
            $filtered_application_id = sanitize_text_field($post_application_id['id']);
            $filtered_api_key        = sanitize_text_field($post_api_key['key']);
            $filtered_index_name     = sanitize_text_field($post_index_name['name']);

            /**
             * Sanitizing by setting the value to either 1 or 0
             */
            $filtered_automatically_send_new_products = (! empty($automatically_send_new_products)) ? 1 : 0;

            /**
             * Values have been filtered and sanitized
             * Check if set and not empty and update the database
             *
             * @see https://developer.wordpress.org/reference/functions/update_option/
             */
            if (isset($filtered_application_id) && (! empty($filtered_application_id))) {
                update_option(
                    ALGOWOO_DB_OPTION . ALGOLIA_APPLICATION_ID,
                    $filtered_application_id
                );
            }

            if (isset($filtered_api_key) && (! empty($filtered_api_key))) {
                update_option(
                    ALGOWOO_DB_OPTION . ALGOLIA_API_KEY,
                    $filtered_api_key
                );
            }

            if (isset($filtered_index_name) && (! empty($filtered_index_name))) {
                update_option(
                    ALGOWOO_DB_OPTION . INDEX_NAME,
                    $filtered_index_name
                );
            }

            if (isset($filtered_automatically_send_new_products) && (! empty($filtered_automatically_send_new_products))) {
                update_option(
                    ALGOWOO_DB_OPTION . AUTOMATICALLY_SEND_NEW_PRODUCTS,
                    $filtered_automatically_send_new_products
                );
            }
        }

		/**
		 * Check if values are empty and display error notice if not all values have been set
		 *
		 *  @param string $algolia_application_id Algolia application ID.
		 * 	@param string $algolia_api_key Algolia API key.
		 * 	@param string $algolia_index_name Algolia index name.
		 * 
		 */
		public static function check_algolia_input_values($algolia_application_id, $algolia_api_key, $algolia_index_name )
		{	
			if (empty($algolia_application_id) || empty($algolia_api_key || empty($algolia_index_name))) {
                add_action(
                    'admin_notices',
                    function () {
                        echo '<div class="error notice">
							  <p>' . esc_html__('All settings need to be set for the plugin to work.', 'algolia-woo-indexer') . '</p>
							</div>';
                    }
                );
                return;
            }
        }

		/**
		 * Check if we can connect to Algolia, if not, handle the exception, display an error and then return
		 */
		public static function can_connect_to_algolia() {
            try {
                self::$algolia->listApiKeys();
            } catch (\Algolia\AlgoliaSearch\Exceptions\UnreachableException $error) {
                add_action(
                    'admin_notices',
                    function () {
                        echo '<div class="error notice">
							  <p>' . esc_html__('An error has been encountered. Please check your application ID and API key. ', 'algolia-woo-indexer') . '</p>
							</div>';
                    }
                );
                return;
            }
		}

        /**
         * Send WooCommerce products to Algolia
         *
         * @param Int $id Product to send to Algolia if we send only a single product
         * @return void
         */
        public static function send_products_to_algolia($id = '')
        {
            /**
             * Remove classes from plugin URL and autoload Algolia with Composer
             */

            $base_plugin_directory = str_replace('classes', '', dirname(__FILE__));
            require_once $base_plugin_directory . '/vendor/autoload.php';

            /**
             * Fetch the required variables from the Settings API
             */

            $algolia_application_id = get_option(ALGOWOO_DB_OPTION . ALGOLIA_APPLICATION_ID);
			$algolia_application_id = is_string($algolia_application_id) ? $algolia_application_id : CHANGE_ME;

            $algolia_api_key        = get_option(ALGOWOO_DB_OPTION . ALGOLIA_API_KEY);
			$algolia_api_key		= is_string($algolia_api_key) ?$algolia_api_key : CHANGE_ME;

            $algolia_index_name     = get_option(ALGOWOO_DB_OPTION . INDEX_NAME);
			$algolia_index_name		= is_string($algolia_index_name) ? $algolia_index_name : CHANGE_ME;

			/**
             * Display admin notice and return if not all values have been set
             */

			self::check_algolia_input_values($algolia_application_id, $algolia_api_key, $algolia_index_name);

            /**
             * Initiate the Algolia client
             */
            self::$algolia = \Algolia\AlgoliaSearch\SearchClient::create($algolia_application_id, $algolia_api_key);

			/**
             * Check if we can connect, if not, handle the exception, display an error and then return
             */
			self::can_connect_to_algolia();
			
			/**
             * Initialize the search index and set the name to the option from the database
             */
            $index = self::$algolia->initIndex($algolia_index_name);

            /**
             * Setup arguments for sending all products to Algolia
             *
             * Limit => -1 means we send all products
             */
            $arguments = array(
                'status'   => 'publish',
                'limit'    => -1,
                'paginate' => false,
            );

            /**
            * Setup arguments for sending only a single product
            */
            if (isset($id) && '' !== $id) {
                $arguments = array(
                    'status'   => 'publish',
                    'include'  => array( $id ),
                    'paginate' => false,
                );
            }

            /**
             * Fetch all products from WooCommerce
             *
             * @see https://docs.woocommerce.com/wc-apidocs/function-wc_get_products.html
             */
            $products = /** @scrutinizer ignore-call */ wc_get_products($arguments);

            if ( empty( $products ) ) {
                return;
            }
            $records = array();
            $record  = array();

            foreach ($products as $product) {
                /**
                 * Extract image from $product->get_image()
                 */
                preg_match('/<img(.*)src(.*)=(.*)"(.*)"/U', $product->get_image(), $result);
                $product_image = array_pop($result);
                /**
                 * Build the record array using the information from the WooCommerce product
                 */
                $record['objectID']          = $product->get_id();
                $record['product_name']      = $product->get_name();
                $record['product_image']     = $product_image;
                $record['short_description'] = $product->get_short_description();
                $record['regular_price']     = $product->get_regular_price();
                $record['sale_price']        = $product->get_sale_price();
                $record['on_sale']           = $product->is_on_sale();

                $records[] = $record;
            }
            wp_reset_postdata();

            /**
             * Send the information to Algolia and save the result
             * If result is NullResponse, print an error message
             */
            $result = $index->saveObjects($records);

            if ('Algolia\AlgoliaSearch\Response\NullResponse' === get_class($result)) {
				wp_die(esc_html__('No response from the server. Please check your settings and try again', 'algolia_woo_indexer_settings'));    
            }

            /**
             * Display success message
             */
            echo '<div class="notice notice-success is-dismissible">
					 	<p>' . esc_html__('Product(s) sent to Algolia.', 'algolia-woo-indexer') . '</p>
				  		</div>';
        }

        /**
         * Sanitize input in settings fields and filter through regex to accept only a-z and A-Z
         *
         * @param string $input Settings text data
         * @return array
         */
        public static function settings_fields_validate_options($input)
        {
            $valid         = array();
            $valid['name'] = preg_replace(
                '/[^a-zA-Z\s]/',
                '',
                $input['name']
            );
            return $valid;
        }

        /**
         * Load text domain for translations
         *
         * @return void
         */
        public static function load_textdomain()
        {
            load_plugin_textdomain('algolia-woo-indexer', false, basename(dirname(__FILE__)) . '/languages/');
        }

        /**
         * Add the new menu to settings section so that we can configure the plugin
         *
         * @return void
         */
        public static function admin_menu()
        {
            add_submenu_page(
                'options-general.php',
                esc_html__('Algolia Woo Indexer Settings', 'algolia-woo-indexer'),
                esc_html__('Algolia Woo Indexer Settings', 'algolia-woo-indexer'),
                'manage_options',
                'algolia-woo-indexer-settings',
                array( get_called_class(), 'algolia_woo_indexer_settings' )
            );
        }

        /**
         * Display settings and allow user to modify them
         *
         * @return void
         */
        public static function algolia_woo_indexer_settings()
        {
            /**
            * Verify that the user can access the settings page
            */
            if (! current_user_can('manage_options')) {
                wp_die(esc_html__('Action not allowed.', 'algolia_woo_indexer_settings'));
            } ?>
			<div class="wrap">
				<h1><?php esc_html__('Algolia Woo Indexer Settings', 'algolia-woo-indexer'); ?></h1>
				<form action="<?php echo esc_url(self::$plugin_url); ?>" method="POST">
			<?php
            settings_fields('algolia_woo_options');
            do_settings_sections('algolia_woo_indexer');
            submit_button('', 'primary wide'); ?>
				</form>
				<form action="<?php echo esc_url(self::$plugin_url); ?>" method="POST">
					<?php wp_nonce_field('send_products_to_algolia_nonce_action', 'send_products_to_algolia_nonce_name'); ?>
					<input type="hidden" name="send_products_to_algolia" id="send_products_to_algolia" value="true" />
					<?php submit_button(esc_html__('Send products to Algolia', 'algolia_woo_indexer_settings'), 'primary wide', '', false); ?>
				</form>
			</div>
			<?php
        }

        /**
         * Get active object instance
         *
         * @return object
         */
        public static function get_instance()
        {
            if (! self::$instance) {
                self::$instance = new Algolia_Woo_Indexer();
            }
            return self::$instance;
        }

        /**
         * The actions to execute when the plugin is activated.
         *
         * @return void
         */
        public static function activate_plugin()
        {

            /**
             * Set default values for options if not already set
             */
            $automatically_send_new_products = get_option(ALGOWOO_DB_OPTION . AUTOMATICALLY_SEND_NEW_PRODUCTS);
            $algolia_application_id          = get_option(ALGOWOO_DB_OPTION . ALGOLIA_APPLICATION_ID);
            $algolia_api_key                 = get_option(ALGOWOO_DB_OPTION . ALGOLIA_API_KEY);
            $algolia_index_name              = get_option(ALGOWOO_DB_OPTION . INDEX_NAME);
            
            if (empty($automatically_send_new_products)) {
                add_option(
                    ALGOWOO_DB_OPTION . AUTOMATICALLY_SEND_NEW_PRODUCTS,
                    '0'
                );
            }

            if (empty($algolia_application_id)) {
                add_option(
                    ALGOWOO_DB_OPTION . ALGOLIA_APPLICATION_ID,
                    'Change me'
                );
            }

            if (empty($algolia_api_key)) {
                add_option(
                    ALGOWOO_DB_OPTION . ALGOLIA_API_KEY,
                    'Change me'
                );
            }

            if (empty($algolia_index_name)) {
                add_option(
                    ALGOWOO_DB_OPTION . INDEX_NAME,
                    'Change me'
                );
            }
            set_transient(self::PLUGIN_TRANSIENT, true);
        }

        /**
         * The actions to execute when the plugin is deactivated.
         *
         * @return void
         */
        public static function deactivate_plugin()
        {
            delete_transient(self::PLUGIN_TRANSIENT);
        }
    }
}