AyeCode / invoicing

includes/class-wpinv.php

Indentation +615 added lines, -615 removed lines

@@ -14,619 +14,619 @@
  */
 class WPInv_Plugin {
 
-	/**
-	 * GetPaid version.
-	 *
-	 * @var string
-	 */
-	public $version;
-
-	/**
-	 * Data container.
-	 *
-	 * @var array
-	 */
-	protected $data = array();
-
-	/**
-	 * Form elements instance.
-	 *
-	 * @var WPInv_Payment_Form_Elements
-	 */
-	public $form_elements;
-
-	/**
-	 * @var array An array of payment gateways.
-	 */
-	public $gateways;
-
-	/**
-	 * Class constructor.
-	 */
-	public function __construct() {
-		$this->define_constants();
-		$this->includes();
-		$this->init_hooks();
-		$this->set_properties();
-	}
-
-	/**
-	 * Sets a custom data property.
-	 *
-	 * @param string $prop The prop to set.
-	 * @param mixed $value The value to retrieve.
-	 */
-	public function set( $prop, $value ) {
-		$this->data[ $prop ] = $value;
-	}
-
-	/**
-	 * Gets a custom data property.
-	 *
-	 * @param string $prop The prop to set.
-	 * @return mixed The value.
-	 */
-	public function get( $prop ) {
-		if ( isset( $this->data[ $prop ] ) ) {
-			return $this->data[ $prop ];
-		}
-
-		return null;
-	}
-
-	/**
-	 * Define class properties.
-	 */
-	public function set_properties() {
-		// Sessions.
-		$this->set( 'session', new WPInv_Session_Handler() );
-		$GLOBALS['wpi_session'] = $this->get( 'session' ); // Backwards compatibility.
-		$GLOBALS['wpinv_euvat'] = new WPInv_EUVat(); // Backwards compatibility.
-
-		// Init other objects.
-		$this->set( 'notes', new WPInv_Notes() );
-		$this->set( 'api', new WPInv_API() );
-		$this->set( 'post_types', new GetPaid_Post_Types() );
-		$this->set( 'template', new GetPaid_Template() );
-		$this->set( 'admin', new GetPaid_Admin() );
-		$this->set( 'subscriptions', new WPInv_Subscriptions() );
-		$this->set( 'invoice_emails', new GetPaid_Invoice_Notification_Emails() );
-		$this->set( 'subscription_emails', new GetPaid_Subscription_Notification_Emails() );
-		$this->set( 'daily_maintenace', new GetPaid_Daily_Maintenance() );
-		$this->set( 'payment_forms', new GetPaid_Payment_Forms() );
-		$this->set( 'maxmind', new GetPaid_MaxMind_Geolocation() );
-	}
-
-	 /**
-	 * Define plugin constants.
-	 */
-	public function define_constants() {
-		define( 'WPINV_PLUGIN_DIR', plugin_dir_path( WPINV_PLUGIN_FILE ) );
-		define( 'WPINV_PLUGIN_URL', plugin_dir_url( WPINV_PLUGIN_FILE ) );
-		$this->version = WPINV_VERSION;
-	}
-
-	/**
-	 * Hook into actions and filters.
-	 *
-	 * @since 1.0.19
-	 */
-	protected function init_hooks() {
-		/* Internationalize the text strings used. */
-		add_action( 'plugins_loaded', array( &$this, 'plugins_loaded' ) );
-
-		// Init the plugin after WordPress inits.
-		add_action( 'init', array( $this, 'init' ), 1 );
-		add_action( 'init', array( $this, 'maybe_process_ipn' ), 100 );
-		add_action( 'init', array( $this, 'wpinv_actions' ) );
-		add_action( 'init', array( $this, 'maybe_do_authenticated_action' ), 100 );
-		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ), 11 );
-		add_action( 'wp_footer', array( $this, 'wp_footer' ) );
-		add_action( 'wp_head', array( $this, 'wp_head' ) );
-		add_action( 'widgets_init', array( $this, 'register_widgets' ) );
-		add_filter( 'wpseo_exclude_from_sitemap_by_post_ids', array( $this, 'wpseo_exclude_from_sitemap_by_post_ids' ) );
-		add_filter( 'the_seo_framework_sitemap_supported_post_types', array( $this, 'exclude_invoicing_post_types' ) );
-		add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts' ) );
-
-		add_filter( 'query_vars', array( $this, 'custom_query_vars' ) );
-		add_action( 'init', array( $this, 'add_rewrite_rule' ), 10, 0 );
-		add_action( 'pre_get_posts', array( $this, 'maybe_process_new_ipn' ), 1 );
-
-		// Fires after registering actions.
-		do_action( 'wpinv_actions', $this );
-		do_action( 'getpaid_actions', $this );
-	}
-
-	public function plugins_loaded() {
-		/* Internationalize the text strings used. */
-		$this->load_textdomain();
-
-		do_action( 'wpinv_loaded' );
-
-		// Fix oxygen page builder conflict
-		if ( function_exists( 'ct_css_output' ) ) {
-			wpinv_oxygen_fix_conflict();
-		}
-	}
-
-	/**
-	 * Load Localisation files.
-	 *
-	 * Note: the first-loaded translation file overrides any following ones if the same translation is present.
-	 *
-	 * Locales found in:
-	 *      - WP_LANG_DIR/plugins/invoicing-LOCALE.mo
-	 *      - WP_PLUGIN_DIR/invoicing/languages/invoicing-LOCALE.mo
-	 *
-	 * @since 1.0.0
-	 */
-	public function load_textdomain() {
-		// Determines the current locale.
-		if ( function_exists( 'determine_locale' ) ) {
-			$locale = determine_locale();
-		} else if ( function_exists( 'get_user_locale' ) ) {
-			$locale = get_user_locale();
-		} else {
-			$locale = get_locale();
-		}
-
-		/**
-		 * Filter the locale to use for translations.
-		 */
-		$locale = apply_filters( 'plugin_locale', $locale, 'invoicing' );
-
-		unload_textdomain( 'invoicing', true );
-		load_textdomain( 'invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo' );
-		load_plugin_textdomain( 'invoicing', false, plugin_basename( dirname( WPINV_PLUGIN_FILE ) ) . '/languages/' );
-	}
-
-	/**
-	 * Include required core files used in admin and on the frontend.
-	 */
-	public function includes() {
-		// Start with the settings.
-		require_once WPINV_PLUGIN_DIR . 'includes/admin/register-settings.php';
-
-		// Packages/libraries.
-		require_once WPINV_PLUGIN_DIR . 'vendor/autoload.php';
-		require_once WPINV_PLUGIN_DIR . 'vendor/ayecode/wp-ayecode-ui/ayecode-ui-loader.php';
-
-		// Load functions.
-		require_once WPINV_PLUGIN_DIR . 'includes/deprecated-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-email-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-general-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-helper-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-tax-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-template-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-address-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/invoice-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/subscription-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-item-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-discount-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-gateway-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-payment-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/user-functions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/error-functions.php';
-
-		// Register autoloader.
-		try {
-			spl_autoload_register( array( $this, 'autoload' ), true );
-		} catch ( Exception $e ) {
-			wpinv_error_log( $e->getMessage(), '', __FILE__, 149, true );
-		}
-
-		require_once WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-session.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-session-handler.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-ajax.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-api.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-cache-helper.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-db.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions-db.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/wpinv-subscription.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-privacy.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-privacy.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/libraries/class-ayecode-addons.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-addons.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/checkout.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/invoice-history.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/subscriptions.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/buy-item.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/getpaid.php';
-		require_once WPINV_PLUGIN_DIR . 'widgets/invoice.php';
-		require_once WPINV_PLUGIN_DIR . 'includes/admin/admin-pages.php';
-
-		if ( is_admin() || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
-			GetPaid_Post_Types_Admin::init();
-
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/wpinv-admin-functions.php';
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-payment-form.php';
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-notes.php';
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-admin-menus.php';
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-users.php';
-			require_once WPINV_PLUGIN_DIR . 'includes/admin/class-getpaid-admin-profile.php';
-			// load the user class only on the users.php page
-			global $pagenow;
-			if ( $pagenow == 'users.php' ) {
-				new WPInv_Admin_Users();
-			}
-		}
-
-		// Register cli commands
-		if ( defined( 'WP_CLI' ) && WP_CLI ) {
-			require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-cli.php';
-			WP_CLI::add_command( 'invoicing', 'WPInv_CLI' );
-		}
-	}
-
-	/**
-	 * Class autoloader
-	 *
-	 * @param       string $class_name The name of the class to load.
-	 * @access      public
-	 * @since       1.0.19
-	 * @return      void
-	 */
-	public function autoload( $class_name ) {
-		// Normalize the class name...
-		$class_name  = strtolower( $class_name );
-
-		// ... and make sure it is our class.
-		if ( false === strpos( $class_name, 'getpaid_' ) && false === strpos( $class_name, 'wpinv_' ) ) {
-			return;
-		}
-
-		// Next, prepare the file name from the class.
-		$file_name = 'class-' . str_replace( '_', '-', $class_name ) . '.php';
-
-		// Base path of the classes.
-		$plugin_path = untrailingslashit( WPINV_PLUGIN_DIR );
-
-		// And an array of possible locations in order of importance.
-		$locations = array(
-			"$plugin_path/includes",
-			"$plugin_path/includes/data-stores",
-			"$plugin_path/includes/gateways",
-			"$plugin_path/includes/payments",
-			"$plugin_path/includes/geolocation",
-			"$plugin_path/includes/reports",
-			"$plugin_path/includes/api",
-			"$plugin_path/includes/admin",
-			"$plugin_path/includes/admin/meta-boxes",
-		);
-
-		foreach ( apply_filters( 'getpaid_autoload_locations', $locations ) as $location ) {
-			if ( file_exists( trailingslashit( $location ) . $file_name ) ) {
-				include trailingslashit( $location ) . $file_name;
-				break;
-			}
-		}
-	}
-
-	/**
-	 * Inits hooks etc.
-	 */
-	public function init() {
-		// Fires before getpaid inits.
-		do_action( 'before_getpaid_init', $this );
-
-		// Maybe upgrade.
-		$this->maybe_upgrade_database();
-
-		// Load default gateways.
-		$gateways = apply_filters(
-			'getpaid_default_gateways',
-			array(
-				'manual'        => 'GetPaid_Manual_Gateway',
-				'paypal'        => 'GetPaid_Paypal_Gateway',
-				'worldpay'      => 'GetPaid_Worldpay_Gateway',
-				'bank_transfer' => 'GetPaid_Bank_Transfer_Gateway',
-				'authorizenet'  => 'GetPaid_Authorize_Net_Gateway',
-			)
-		);
-
-		foreach ( $gateways as $id => $class ) {
-			$this->gateways[ $id ] = new $class();
-		}
-
-		if ( 'yes' != get_option( 'wpinv_renamed_gateways' ) ) {
-			GetPaid_Installer::rename_gateways_label();
-			update_option( 'wpinv_renamed_gateways', 'yes' );
-		}
-
-		// Fires after getpaid inits.
-		do_action( 'getpaid_init', $this );
-	}
-
-	/**
-	 * Checks if this is an IPN request and processes it.
-	 */
-	public function maybe_process_ipn() {
-		// Ensure that this is an IPN request.
-		if ( empty( $_GET['wpi-listener'] ) || 'IPN' !== $_GET['wpi-listener'] || empty( $_GET['wpi-gateway'] ) ) {
-			return;
-		}
-
-		$gateway = sanitize_text_field( $_GET['wpi-gateway'] );
-
-		do_action( 'wpinv_verify_payment_ipn', $gateway );
-		do_action( "wpinv_verify_{$gateway}_ipn" );
-		exit;
-	}
-
-	public function enqueue_scripts() {
-		// Fires before adding scripts.
-		do_action( 'getpaid_enqueue_scripts' );
-
-		$localize                         = array();
-		$localize['ajax_url']             = admin_url( 'admin-ajax.php' );
-		$localize['thousands']            = wpinv_thousands_separator();
-		$localize['decimals']             = wpinv_decimal_separator();
-		$localize['nonce']                = wp_create_nonce( 'wpinv-nonce' );
-		$localize['txtComplete']          = __( 'Continue', 'invoicing' );
-		$localize['UseTaxes']             = wpinv_use_taxes();
-		$localize['formNonce']            = wp_create_nonce( 'getpaid_form_nonce' );
-		$localize['loading']              = __( 'Loading...', 'invoicing' );
-		$localize['connectionError']      = __( 'Could not establish a connection to the server.', 'invoicing' );
-		$localize['recaptchaSettings']    = getpaid_get_recaptcha_settings();
-
-		$localize = apply_filters( 'wpinv_front_js_localize', $localize );
-
-		// reCaptcha.
-		if ( getpaid_is_recaptcha_enabled() && ( $recaptcha_js = getpaid_recaptcha_api_url() ) ) {
-			wp_enqueue_script( 'recaptcha', $recaptcha_js, array(), null, true ); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion
-		}
-
-		wp_enqueue_script( 'wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.min.js', array( 'jquery' ), WPINV_VERSION, true );
-		wp_localize_script( 'wpinv-front-script', 'WPInv', $localize );
-	}
-
-	public function wpinv_actions() {
-		if ( isset( $_REQUEST['wpi_action'] ) ) {
-			do_action( 'wpinv_' . wpinv_sanitize_key( $_REQUEST['wpi_action'] ), $_REQUEST );
-		}
-
-		if ( defined( 'WP_ALL_IMPORT_ROOT_DIR' ) ) {
-			include plugin_dir_path( __FILE__ ) . 'libraries/wp-all-import/class-getpaid-wp-all-import.php';
-		}
-	}
-
-	/**
-	 * Fires an action after verifying that a user can fire them.
-	 *
-	 * Note: If the action is on an invoice, subscription etc, esure that the
-	 * current user owns the invoice/subscription.
-	 */
-	public function maybe_do_authenticated_action() {
-		if ( isset( $_REQUEST['getpaid-action'] ) && isset( $_REQUEST['getpaid-nonce'] ) && wp_verify_nonce( $_REQUEST['getpaid-nonce'], 'getpaid-nonce' ) ) {
-			$key  = sanitize_key( $_REQUEST['getpaid-action'] );
-			$data = wp_unslash( $_REQUEST );
-
-			if ( is_user_logged_in() ) {
-				do_action( "getpaid_authenticated_action_$key", $data );
-			}
-
-			do_action( "getpaid_unauthenticated_action_$key", $data );
-		}
-	}
-
-	public function pre_get_posts( $wp_query ) {
-		if ( ! is_admin() && ! empty( $wp_query->query_vars['post_type'] ) && getpaid_is_invoice_post_type( $wp_query->query_vars['post_type'] ) && is_user_logged_in() && is_single() && $wp_query->is_main_query() ) {
-			$wp_query->query_vars['post_status'] = array_keys( wpinv_get_invoice_statuses( false, false, $wp_query->query_vars['post_type'] ) );
-		}
-
-		return $wp_query;
-	}
-
-	/**
-	 * Register widgets
-	 *
-	 */
-	public function register_widgets() {
-		global $pagenow;
-
-		// Currently, UX Builder does not work particulaly well with SuperDuper.
-		// So we disable our widgets when editing a page with UX Builder.
-		if ( function_exists( 'ux_builder_is_active' ) && ux_builder_is_active() ) {
-			return;
-		}
-
-		$block_widget_init_screens = function_exists( 'sd_pagenow_exclude' ) ? sd_pagenow_exclude() : array();
-
-		if ( is_admin() && $pagenow && in_array( $pagenow, $block_widget_init_screens ) ) {
-			// don't initiate in these conditions.
-		} else {
-			// Only load allowed widgets.
-			$exclude = function_exists( 'sd_widget_exclude' ) ? sd_widget_exclude() : array();
-			$widgets = apply_filters(
-				'getpaid_widget_classes',
-				array(
-					'WPInv_Checkout_Widget',
-					'WPInv_History_Widget',
-					'WPInv_Receipt_Widget',
-					'WPInv_Subscriptions_Widget',
-					'WPInv_Buy_Item_Widget',
-					'WPInv_Messages_Widget',
-					'WPInv_GetPaid_Widget',
-					'WPInv_Invoice_Widget',
-				)
-			);
-
-			// For each widget...
-			foreach ( $widgets as $widget ) {
-				// Abort early if it is excluded for this page.
-				if ( in_array( $widget, $exclude ) ) {
-					continue;
-				}
-
-				// SD V1 used to extend the widget class. V2 does not, so we cannot call register widget on it.
-				if ( is_subclass_of( $widget, 'WP_Widget' ) ) {
-					register_widget( $widget );
-				} else {
-					new $widget();
-				}
-			}
-		}
-	}
-
-	/**
-	 * Upgrades the database.
-	 *
-	 * @since 2.0.2
-	 */
-	public function maybe_upgrade_database() {
-		// Ensure the database tables are up to date.
-		GetPaid_Installer::maybe_create_db_tables();
-
-		$wpi_version = get_option( 'wpinv_version', 0 );
-
-		if ( $wpi_version == WPINV_VERSION ) {
-			return;
-		}
-
-		$installer = new GetPaid_Installer();
-
-		if ( empty( $wpi_version ) ) {
-			return $installer->upgrade_db( 0 );
-		}
-
-		$upgrades  = array(
-			'0.0.5' => '004',
-			'1.0.3' => '102',
-			'2.0.0' => '118',
-			'2.8.0' => '279',
-		);
-
-		foreach ( $upgrades as $key => $method ) {
-			if ( version_compare( $wpi_version, $key, '<' ) ) {
-				return $installer->upgrade_db( $method );
-			}
-		}
-	}
-
-	/**
-	 * Flushes the permalinks if needed.
-	 *
-	 * @since 2.0.8
-	 */
-	public function maybe_flush_permalinks() {
-		$flush = get_option( 'wpinv_flush_permalinks', 0 );
-
-		if ( ! empty( $flush ) ) {
-			flush_rewrite_rules();
-			delete_option( 'wpinv_flush_permalinks' );
-		}
-	}
-
-	/**
-	 * Remove our pages from yoast sitemaps.
-	 *
-	 * @since 1.0.19
-	 * @param int[] $excluded_posts_ids
-	 */
-	public function wpseo_exclude_from_sitemap_by_post_ids( $excluded_posts_ids ) {
-		// Ensure that we have an array.
-		if ( ! is_array( $excluded_posts_ids ) ) {
-			$excluded_posts_ids = array();
-		}
-
-		// Prepare our pages.
-		$our_pages = array();
-
-		// Checkout page.
-		$our_pages[] = wpinv_get_option( 'checkout_page', false );
-
-		// Success page.
-		$our_pages[] = wpinv_get_option( 'success_page', false );
-
-		// Failure page.
-		$our_pages[] = wpinv_get_option( 'failure_page', false );
-
-		// History page.
-		$our_pages[] = wpinv_get_option( 'invoice_history_page', false );
-
-		// Subscriptions page.
-		$our_pages[] = wpinv_get_option( 'invoice_subscription_page', false );
-
-		$our_pages   = array_map( 'intval', array_filter( $our_pages ) );
-
-		$excluded_posts_ids = $excluded_posts_ids + $our_pages;
-
-		return array_unique( $excluded_posts_ids );
-	}
-
-	/**
-	 * Remove our pages from yoast sitemaps.
-	 *
-	 * @since 1.0.19
-	 * @param string[] $post_types
-	 */
-	public function exclude_invoicing_post_types( $post_types ) {
-		// Ensure that we have an array.
-		if ( ! is_array( $post_types ) ) {
-			$post_types = array();
-		}
-
-		// Remove our post types.
-		return array_diff( $post_types, array_keys( getpaid_get_invoice_post_types() ) );
-	}
-
-	/**
-	 * Displays additional footer code.
-	 *
-	 * @since 2.0.0
-	 */
-	public function wp_footer() {
-		wpinv_get_template( 'frontend-footer.php' );
-	}
-
-	/**
-	 * Displays additional header code.
-	 *
-	 * @since 2.0.0
-	 */
-	public function wp_head() {
-		wpinv_get_template( 'frontend-head.php' );
-	}
-
-	/**
-	 * Custom query vars.
-	 *
-	 */
-	public function custom_query_vars( $vars ) {
-		$vars[] = 'getpaid-ipn';
-		return $vars;
-	}
-
-	/**
-	 * Add rewrite tags and rules.
-	 *
-	 */
-	public function add_rewrite_rule() {
-		$tag = 'getpaid-ipn';
-		add_rewrite_tag( "%$tag%", '([^&]+)' );
-		add_rewrite_rule( "^$tag/([^/]*)/?", "index.php?$tag=\$matches[1]", 'top' );
-	}
-
-	/**
-	 * Processes non-query string ipns.
-	 *
-	 */
-	public function maybe_process_new_ipn( $query ) {
-		if ( is_admin() || ! $query->is_main_query() ) {
-			return;
-		}
-
-		$gateway = get_query_var( 'getpaid-ipn' );
-
-		if ( ! empty( $gateway ) ) {
-			$gateway = sanitize_text_field( $gateway );
-			nocache_headers();
-			do_action( 'wpinv_verify_payment_ipn', $gateway );
-			do_action( "wpinv_verify_{$gateway}_ipn" );
-			exit;
-		}
-	}
+    /**
+     * GetPaid version.
+     *
+     * @var string
+     */
+    public $version;
+
+    /**
+     * Data container.
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Form elements instance.
+     *
+     * @var WPInv_Payment_Form_Elements
+     */
+    public $form_elements;
+
+    /**
+     * @var array An array of payment gateways.
+     */
+    public $gateways;
+
+    /**
+     * Class constructor.
+     */
+    public function __construct() {
+        $this->define_constants();
+        $this->includes();
+        $this->init_hooks();
+        $this->set_properties();
+    }
+
+    /**
+     * Sets a custom data property.
+     *
+     * @param string $prop The prop to set.
+     * @param mixed $value The value to retrieve.
+     */
+    public function set( $prop, $value ) {
+        $this->data[ $prop ] = $value;
+    }
+
+    /**
+     * Gets a custom data property.
+     *
+     * @param string $prop The prop to set.
+     * @return mixed The value.
+     */
+    public function get( $prop ) {
+        if ( isset( $this->data[ $prop ] ) ) {
+            return $this->data[ $prop ];
+        }
+
+        return null;
+    }
+
+    /**
+     * Define class properties.
+     */
+    public function set_properties() {
+        // Sessions.
+        $this->set( 'session', new WPInv_Session_Handler() );
+        $GLOBALS['wpi_session'] = $this->get( 'session' ); // Backwards compatibility.
+        $GLOBALS['wpinv_euvat'] = new WPInv_EUVat(); // Backwards compatibility.
+
+        // Init other objects.
+        $this->set( 'notes', new WPInv_Notes() );
+        $this->set( 'api', new WPInv_API() );
+        $this->set( 'post_types', new GetPaid_Post_Types() );
+        $this->set( 'template', new GetPaid_Template() );
+        $this->set( 'admin', new GetPaid_Admin() );
+        $this->set( 'subscriptions', new WPInv_Subscriptions() );
+        $this->set( 'invoice_emails', new GetPaid_Invoice_Notification_Emails() );
+        $this->set( 'subscription_emails', new GetPaid_Subscription_Notification_Emails() );
+        $this->set( 'daily_maintenace', new GetPaid_Daily_Maintenance() );
+        $this->set( 'payment_forms', new GetPaid_Payment_Forms() );
+        $this->set( 'maxmind', new GetPaid_MaxMind_Geolocation() );
+    }
+
+        /**
+         * Define plugin constants.
+         */
+    public function define_constants() {
+        define( 'WPINV_PLUGIN_DIR', plugin_dir_path( WPINV_PLUGIN_FILE ) );
+        define( 'WPINV_PLUGIN_URL', plugin_dir_url( WPINV_PLUGIN_FILE ) );
+        $this->version = WPINV_VERSION;
+    }
+
+    /**
+     * Hook into actions and filters.
+     *
+     * @since 1.0.19
+     */
+    protected function init_hooks() {
+        /* Internationalize the text strings used. */
+        add_action( 'plugins_loaded', array( &$this, 'plugins_loaded' ) );
+
+        // Init the plugin after WordPress inits.
+        add_action( 'init', array( $this, 'init' ), 1 );
+        add_action( 'init', array( $this, 'maybe_process_ipn' ), 100 );
+        add_action( 'init', array( $this, 'wpinv_actions' ) );
+        add_action( 'init', array( $this, 'maybe_do_authenticated_action' ), 100 );
+        add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ), 11 );
+        add_action( 'wp_footer', array( $this, 'wp_footer' ) );
+        add_action( 'wp_head', array( $this, 'wp_head' ) );
+        add_action( 'widgets_init', array( $this, 'register_widgets' ) );
+        add_filter( 'wpseo_exclude_from_sitemap_by_post_ids', array( $this, 'wpseo_exclude_from_sitemap_by_post_ids' ) );
+        add_filter( 'the_seo_framework_sitemap_supported_post_types', array( $this, 'exclude_invoicing_post_types' ) );
+        add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts' ) );
+
+        add_filter( 'query_vars', array( $this, 'custom_query_vars' ) );
+        add_action( 'init', array( $this, 'add_rewrite_rule' ), 10, 0 );
+        add_action( 'pre_get_posts', array( $this, 'maybe_process_new_ipn' ), 1 );
+
+        // Fires after registering actions.
+        do_action( 'wpinv_actions', $this );
+        do_action( 'getpaid_actions', $this );
+    }
+
+    public function plugins_loaded() {
+        /* Internationalize the text strings used. */
+        $this->load_textdomain();
+
+        do_action( 'wpinv_loaded' );
+
+        // Fix oxygen page builder conflict
+        if ( function_exists( 'ct_css_output' ) ) {
+            wpinv_oxygen_fix_conflict();
+        }
+    }
+
+    /**
+     * Load Localisation files.
+     *
+     * Note: the first-loaded translation file overrides any following ones if the same translation is present.
+     *
+     * Locales found in:
+     *      - WP_LANG_DIR/plugins/invoicing-LOCALE.mo
+     *      - WP_PLUGIN_DIR/invoicing/languages/invoicing-LOCALE.mo
+     *
+     * @since 1.0.0
+     */
+    public function load_textdomain() {
+        // Determines the current locale.
+        if ( function_exists( 'determine_locale' ) ) {
+            $locale = determine_locale();
+        } else if ( function_exists( 'get_user_locale' ) ) {
+            $locale = get_user_locale();
+        } else {
+            $locale = get_locale();
+        }
+
+        /**
+         * Filter the locale to use for translations.
+         */
+        $locale = apply_filters( 'plugin_locale', $locale, 'invoicing' );
+
+        unload_textdomain( 'invoicing', true );
+        load_textdomain( 'invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo' );
+        load_plugin_textdomain( 'invoicing', false, plugin_basename( dirname( WPINV_PLUGIN_FILE ) ) . '/languages/' );
+    }
+
+    /**
+     * Include required core files used in admin and on the frontend.
+     */
+    public function includes() {
+        // Start with the settings.
+        require_once WPINV_PLUGIN_DIR . 'includes/admin/register-settings.php';
+
+        // Packages/libraries.
+        require_once WPINV_PLUGIN_DIR . 'vendor/autoload.php';
+        require_once WPINV_PLUGIN_DIR . 'vendor/ayecode/wp-ayecode-ui/ayecode-ui-loader.php';
+
+        // Load functions.
+        require_once WPINV_PLUGIN_DIR . 'includes/deprecated-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-email-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-general-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-helper-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-tax-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-template-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-address-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/invoice-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/subscription-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-item-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-discount-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-gateway-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-payment-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/user-functions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/error-functions.php';
+
+        // Register autoloader.
+        try {
+            spl_autoload_register( array( $this, 'autoload' ), true );
+        } catch ( Exception $e ) {
+            wpinv_error_log( $e->getMessage(), '', __FILE__, 149, true );
+        }
+
+        require_once WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-session.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-session-handler.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-ajax.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-api.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-cache-helper.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-db.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions-db.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/wpinv-subscription.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-privacy.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-privacy.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/libraries/class-ayecode-addons.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-addons.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/checkout.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/invoice-history.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/subscriptions.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/buy-item.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/getpaid.php';
+        require_once WPINV_PLUGIN_DIR . 'widgets/invoice.php';
+        require_once WPINV_PLUGIN_DIR . 'includes/admin/admin-pages.php';
+
+        if ( is_admin() || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
+            GetPaid_Post_Types_Admin::init();
+
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/wpinv-admin-functions.php';
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-payment-form.php';
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-notes.php';
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-admin-menus.php';
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-users.php';
+            require_once WPINV_PLUGIN_DIR . 'includes/admin/class-getpaid-admin-profile.php';
+            // load the user class only on the users.php page
+            global $pagenow;
+            if ( $pagenow == 'users.php' ) {
+                new WPInv_Admin_Users();
+            }
+        }
+
+        // Register cli commands
+        if ( defined( 'WP_CLI' ) && WP_CLI ) {
+            require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-cli.php';
+            WP_CLI::add_command( 'invoicing', 'WPInv_CLI' );
+        }
+    }
+
+    /**
+     * Class autoloader
+     *
+     * @param       string $class_name The name of the class to load.
+     * @access      public
+     * @since       1.0.19
+     * @return      void
+     */
+    public function autoload( $class_name ) {
+        // Normalize the class name...
+        $class_name  = strtolower( $class_name );
+
+        // ... and make sure it is our class.
+        if ( false === strpos( $class_name, 'getpaid_' ) && false === strpos( $class_name, 'wpinv_' ) ) {
+            return;
+        }
+
+        // Next, prepare the file name from the class.
+        $file_name = 'class-' . str_replace( '_', '-', $class_name ) . '.php';
+
+        // Base path of the classes.
+        $plugin_path = untrailingslashit( WPINV_PLUGIN_DIR );
+
+        // And an array of possible locations in order of importance.
+        $locations = array(
+            "$plugin_path/includes",
+            "$plugin_path/includes/data-stores",
+            "$plugin_path/includes/gateways",
+            "$plugin_path/includes/payments",
+            "$plugin_path/includes/geolocation",
+            "$plugin_path/includes/reports",
+            "$plugin_path/includes/api",
+            "$plugin_path/includes/admin",
+            "$plugin_path/includes/admin/meta-boxes",
+        );
+
+        foreach ( apply_filters( 'getpaid_autoload_locations', $locations ) as $location ) {
+            if ( file_exists( trailingslashit( $location ) . $file_name ) ) {
+                include trailingslashit( $location ) . $file_name;
+                break;
+            }
+        }
+    }
+
+    /**
+     * Inits hooks etc.
+     */
+    public function init() {
+        // Fires before getpaid inits.
+        do_action( 'before_getpaid_init', $this );
+
+        // Maybe upgrade.
+        $this->maybe_upgrade_database();
+
+        // Load default gateways.
+        $gateways = apply_filters(
+            'getpaid_default_gateways',
+            array(
+                'manual'        => 'GetPaid_Manual_Gateway',
+                'paypal'        => 'GetPaid_Paypal_Gateway',
+                'worldpay'      => 'GetPaid_Worldpay_Gateway',
+                'bank_transfer' => 'GetPaid_Bank_Transfer_Gateway',
+                'authorizenet'  => 'GetPaid_Authorize_Net_Gateway',
+            )
+        );
+
+        foreach ( $gateways as $id => $class ) {
+            $this->gateways[ $id ] = new $class();
+        }
+
+        if ( 'yes' != get_option( 'wpinv_renamed_gateways' ) ) {
+            GetPaid_Installer::rename_gateways_label();
+            update_option( 'wpinv_renamed_gateways', 'yes' );
+        }
+
+        // Fires after getpaid inits.
+        do_action( 'getpaid_init', $this );
+    }
+
+    /**
+     * Checks if this is an IPN request and processes it.
+     */
+    public function maybe_process_ipn() {
+        // Ensure that this is an IPN request.
+        if ( empty( $_GET['wpi-listener'] ) || 'IPN' !== $_GET['wpi-listener'] || empty( $_GET['wpi-gateway'] ) ) {
+            return;
+        }
+
+        $gateway = sanitize_text_field( $_GET['wpi-gateway'] );
+
+        do_action( 'wpinv_verify_payment_ipn', $gateway );
+        do_action( "wpinv_verify_{$gateway}_ipn" );
+        exit;
+    }
+
+    public function enqueue_scripts() {
+        // Fires before adding scripts.
+        do_action( 'getpaid_enqueue_scripts' );
+
+        $localize                         = array();
+        $localize['ajax_url']             = admin_url( 'admin-ajax.php' );
+        $localize['thousands']            = wpinv_thousands_separator();
+        $localize['decimals']             = wpinv_decimal_separator();
+        $localize['nonce']                = wp_create_nonce( 'wpinv-nonce' );
+        $localize['txtComplete']          = __( 'Continue', 'invoicing' );
+        $localize['UseTaxes']             = wpinv_use_taxes();
+        $localize['formNonce']            = wp_create_nonce( 'getpaid_form_nonce' );
+        $localize['loading']              = __( 'Loading...', 'invoicing' );
+        $localize['connectionError']      = __( 'Could not establish a connection to the server.', 'invoicing' );
+        $localize['recaptchaSettings']    = getpaid_get_recaptcha_settings();
+
+        $localize = apply_filters( 'wpinv_front_js_localize', $localize );
+
+        // reCaptcha.
+        if ( getpaid_is_recaptcha_enabled() && ( $recaptcha_js = getpaid_recaptcha_api_url() ) ) {
+            wp_enqueue_script( 'recaptcha', $recaptcha_js, array(), null, true ); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion
+        }
+
+        wp_enqueue_script( 'wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.min.js', array( 'jquery' ), WPINV_VERSION, true );
+        wp_localize_script( 'wpinv-front-script', 'WPInv', $localize );
+    }
+
+    public function wpinv_actions() {
+        if ( isset( $_REQUEST['wpi_action'] ) ) {
+            do_action( 'wpinv_' . wpinv_sanitize_key( $_REQUEST['wpi_action'] ), $_REQUEST );
+        }
+
+        if ( defined( 'WP_ALL_IMPORT_ROOT_DIR' ) ) {
+            include plugin_dir_path( __FILE__ ) . 'libraries/wp-all-import/class-getpaid-wp-all-import.php';
+        }
+    }
+
+    /**
+     * Fires an action after verifying that a user can fire them.
+     *
+     * Note: If the action is on an invoice, subscription etc, esure that the
+     * current user owns the invoice/subscription.
+     */
+    public function maybe_do_authenticated_action() {
+        if ( isset( $_REQUEST['getpaid-action'] ) && isset( $_REQUEST['getpaid-nonce'] ) && wp_verify_nonce( $_REQUEST['getpaid-nonce'], 'getpaid-nonce' ) ) {
+            $key  = sanitize_key( $_REQUEST['getpaid-action'] );
+            $data = wp_unslash( $_REQUEST );
+
+            if ( is_user_logged_in() ) {
+                do_action( "getpaid_authenticated_action_$key", $data );
+            }
+
+            do_action( "getpaid_unauthenticated_action_$key", $data );
+        }
+    }
+
+    public function pre_get_posts( $wp_query ) {
+        if ( ! is_admin() && ! empty( $wp_query->query_vars['post_type'] ) && getpaid_is_invoice_post_type( $wp_query->query_vars['post_type'] ) && is_user_logged_in() && is_single() && $wp_query->is_main_query() ) {
+            $wp_query->query_vars['post_status'] = array_keys( wpinv_get_invoice_statuses( false, false, $wp_query->query_vars['post_type'] ) );
+        }
+
+        return $wp_query;
+    }
+
+    /**
+     * Register widgets
+     *
+     */
+    public function register_widgets() {
+        global $pagenow;
+
+        // Currently, UX Builder does not work particulaly well with SuperDuper.
+        // So we disable our widgets when editing a page with UX Builder.
+        if ( function_exists( 'ux_builder_is_active' ) && ux_builder_is_active() ) {
+            return;
+        }
+
+        $block_widget_init_screens = function_exists( 'sd_pagenow_exclude' ) ? sd_pagenow_exclude() : array();
+
+        if ( is_admin() && $pagenow && in_array( $pagenow, $block_widget_init_screens ) ) {
+            // don't initiate in these conditions.
+        } else {
+            // Only load allowed widgets.
+            $exclude = function_exists( 'sd_widget_exclude' ) ? sd_widget_exclude() : array();
+            $widgets = apply_filters(
+                'getpaid_widget_classes',
+                array(
+                    'WPInv_Checkout_Widget',
+                    'WPInv_History_Widget',
+                    'WPInv_Receipt_Widget',
+                    'WPInv_Subscriptions_Widget',
+                    'WPInv_Buy_Item_Widget',
+                    'WPInv_Messages_Widget',
+                    'WPInv_GetPaid_Widget',
+                    'WPInv_Invoice_Widget',
+                )
+            );
+
+            // For each widget...
+            foreach ( $widgets as $widget ) {
+                // Abort early if it is excluded for this page.
+                if ( in_array( $widget, $exclude ) ) {
+                    continue;
+                }
+
+                // SD V1 used to extend the widget class. V2 does not, so we cannot call register widget on it.
+                if ( is_subclass_of( $widget, 'WP_Widget' ) ) {
+                    register_widget( $widget );
+                } else {
+                    new $widget();
+                }
+            }
+        }
+    }
+
+    /**
+     * Upgrades the database.
+     *
+     * @since 2.0.2
+     */
+    public function maybe_upgrade_database() {
+        // Ensure the database tables are up to date.
+        GetPaid_Installer::maybe_create_db_tables();
+
+        $wpi_version = get_option( 'wpinv_version', 0 );
+
+        if ( $wpi_version == WPINV_VERSION ) {
+            return;
+        }
+
+        $installer = new GetPaid_Installer();
+
+        if ( empty( $wpi_version ) ) {
+            return $installer->upgrade_db( 0 );
+        }
+
+        $upgrades  = array(
+            '0.0.5' => '004',
+            '1.0.3' => '102',
+            '2.0.0' => '118',
+            '2.8.0' => '279',
+        );
+
+        foreach ( $upgrades as $key => $method ) {
+            if ( version_compare( $wpi_version, $key, '<' ) ) {
+                return $installer->upgrade_db( $method );
+            }
+        }
+    }
+
+    /**
+     * Flushes the permalinks if needed.
+     *
+     * @since 2.0.8
+     */
+    public function maybe_flush_permalinks() {
+        $flush = get_option( 'wpinv_flush_permalinks', 0 );
+
+        if ( ! empty( $flush ) ) {
+            flush_rewrite_rules();
+            delete_option( 'wpinv_flush_permalinks' );
+        }
+    }
+
+    /**
+     * Remove our pages from yoast sitemaps.
+     *
+     * @since 1.0.19
+     * @param int[] $excluded_posts_ids
+     */
+    public function wpseo_exclude_from_sitemap_by_post_ids( $excluded_posts_ids ) {
+        // Ensure that we have an array.
+        if ( ! is_array( $excluded_posts_ids ) ) {
+            $excluded_posts_ids = array();
+        }
+
+        // Prepare our pages.
+        $our_pages = array();
+
+        // Checkout page.
+        $our_pages[] = wpinv_get_option( 'checkout_page', false );
+
+        // Success page.
+        $our_pages[] = wpinv_get_option( 'success_page', false );
+
+        // Failure page.
+        $our_pages[] = wpinv_get_option( 'failure_page', false );
+
+        // History page.
+        $our_pages[] = wpinv_get_option( 'invoice_history_page', false );
+
+        // Subscriptions page.
+        $our_pages[] = wpinv_get_option( 'invoice_subscription_page', false );
+
+        $our_pages   = array_map( 'intval', array_filter( $our_pages ) );
+
+        $excluded_posts_ids = $excluded_posts_ids + $our_pages;
+
+        return array_unique( $excluded_posts_ids );
+    }
+
+    /**
+     * Remove our pages from yoast sitemaps.
+     *
+     * @since 1.0.19
+     * @param string[] $post_types
+     */
+    public function exclude_invoicing_post_types( $post_types ) {
+        // Ensure that we have an array.
+        if ( ! is_array( $post_types ) ) {
+            $post_types = array();
+        }
+
+        // Remove our post types.
+        return array_diff( $post_types, array_keys( getpaid_get_invoice_post_types() ) );
+    }
+
+    /**
+     * Displays additional footer code.
+     *
+     * @since 2.0.0
+     */
+    public function wp_footer() {
+        wpinv_get_template( 'frontend-footer.php' );
+    }
+
+    /**
+     * Displays additional header code.
+     *
+     * @since 2.0.0
+     */
+    public function wp_head() {
+        wpinv_get_template( 'frontend-head.php' );
+    }
+
+    /**
+     * Custom query vars.
+     *
+     */
+    public function custom_query_vars( $vars ) {
+        $vars[] = 'getpaid-ipn';
+        return $vars;
+    }
+
+    /**
+     * Add rewrite tags and rules.
+     *
+     */
+    public function add_rewrite_rule() {
+        $tag = 'getpaid-ipn';
+        add_rewrite_tag( "%$tag%", '([^&]+)' );
+        add_rewrite_rule( "^$tag/([^/]*)/?", "index.php?$tag=\$matches[1]", 'top' );
+    }
+
+    /**
+     * Processes non-query string ipns.
+     *
+     */
+    public function maybe_process_new_ipn( $query ) {
+        if ( is_admin() || ! $query->is_main_query() ) {
+            return;
+        }
+
+        $gateway = get_query_var( 'getpaid-ipn' );
+
+        if ( ! empty( $gateway ) ) {
+            $gateway = sanitize_text_field( $gateway );
+            nocache_headers();
+            do_action( 'wpinv_verify_payment_ipn', $gateway );
+            do_action( "wpinv_verify_{$gateway}_ipn" );
+            exit;
+        }
+    }
 }

Spacing +140 added lines, -140 removed lines

@@ -6,7 +6,7 @@ 
  * @since   1.0.0
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * Main Invoicing class.
@@ -56,8 +56,8 @@ 
 	 * @param string $prop The prop to set.
 	 * @param mixed $value The value to retrieve.
 	 */
-	public function set( $prop, $value ) {
-		$this->data[ $prop ] = $value;
+	public function set($prop, $value) {
+		$this->data[$prop] = $value;
 	}
 
 	/**
@@ -66,9 +66,9 @@ 
 	 * @param string $prop The prop to set.
 	 * @return mixed The value.
 	 */
-	public function get( $prop ) {
-		if ( isset( $this->data[ $prop ] ) ) {
-			return $this->data[ $prop ];
+	public function get($prop) {
+		if (isset($this->data[$prop])) {
+			return $this->data[$prop];
 		}
 
 		return null;
@@ -79,30 +79,30 @@ 
 	 */
 	public function set_properties() {
 		// Sessions.
-		$this->set( 'session', new WPInv_Session_Handler() );
-		$GLOBALS['wpi_session'] = $this->get( 'session' ); // Backwards compatibility.
+		$this->set('session', new WPInv_Session_Handler());
+		$GLOBALS['wpi_session'] = $this->get('session'); // Backwards compatibility.
 		$GLOBALS['wpinv_euvat'] = new WPInv_EUVat(); // Backwards compatibility.
 
 		// Init other objects.
-		$this->set( 'notes', new WPInv_Notes() );
-		$this->set( 'api', new WPInv_API() );
-		$this->set( 'post_types', new GetPaid_Post_Types() );
-		$this->set( 'template', new GetPaid_Template() );
-		$this->set( 'admin', new GetPaid_Admin() );
-		$this->set( 'subscriptions', new WPInv_Subscriptions() );
-		$this->set( 'invoice_emails', new GetPaid_Invoice_Notification_Emails() );
-		$this->set( 'subscription_emails', new GetPaid_Subscription_Notification_Emails() );
-		$this->set( 'daily_maintenace', new GetPaid_Daily_Maintenance() );
-		$this->set( 'payment_forms', new GetPaid_Payment_Forms() );
-		$this->set( 'maxmind', new GetPaid_MaxMind_Geolocation() );
+		$this->set('notes', new WPInv_Notes());
+		$this->set('api', new WPInv_API());
+		$this->set('post_types', new GetPaid_Post_Types());
+		$this->set('template', new GetPaid_Template());
+		$this->set('admin', new GetPaid_Admin());
+		$this->set('subscriptions', new WPInv_Subscriptions());
+		$this->set('invoice_emails', new GetPaid_Invoice_Notification_Emails());
+		$this->set('subscription_emails', new GetPaid_Subscription_Notification_Emails());
+		$this->set('daily_maintenace', new GetPaid_Daily_Maintenance());
+		$this->set('payment_forms', new GetPaid_Payment_Forms());
+		$this->set('maxmind', new GetPaid_MaxMind_Geolocation());
 	}
 
 	 /**
 	 * Define plugin constants.
 	 */
 	public function define_constants() {
-		define( 'WPINV_PLUGIN_DIR', plugin_dir_path( WPINV_PLUGIN_FILE ) );
-		define( 'WPINV_PLUGIN_URL', plugin_dir_url( WPINV_PLUGIN_FILE ) );
+		define('WPINV_PLUGIN_DIR', plugin_dir_path(WPINV_PLUGIN_FILE));
+		define('WPINV_PLUGIN_URL', plugin_dir_url(WPINV_PLUGIN_FILE));
 		$this->version = WPINV_VERSION;
 	}
 
@@ -113,38 +113,38 @@ 
 	 */
 	protected function init_hooks() {
 		/* Internationalize the text strings used. */
-		add_action( 'plugins_loaded', array( &$this, 'plugins_loaded' ) );
+		add_action('plugins_loaded', array(&$this, 'plugins_loaded'));
 
 		// Init the plugin after WordPress inits.
-		add_action( 'init', array( $this, 'init' ), 1 );
-		add_action( 'init', array( $this, 'maybe_process_ipn' ), 100 );
-		add_action( 'init', array( $this, 'wpinv_actions' ) );
-		add_action( 'init', array( $this, 'maybe_do_authenticated_action' ), 100 );
-		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ), 11 );
-		add_action( 'wp_footer', array( $this, 'wp_footer' ) );
-		add_action( 'wp_head', array( $this, 'wp_head' ) );
-		add_action( 'widgets_init', array( $this, 'register_widgets' ) );
-		add_filter( 'wpseo_exclude_from_sitemap_by_post_ids', array( $this, 'wpseo_exclude_from_sitemap_by_post_ids' ) );
-		add_filter( 'the_seo_framework_sitemap_supported_post_types', array( $this, 'exclude_invoicing_post_types' ) );
-		add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts' ) );
-
-		add_filter( 'query_vars', array( $this, 'custom_query_vars' ) );
-		add_action( 'init', array( $this, 'add_rewrite_rule' ), 10, 0 );
-		add_action( 'pre_get_posts', array( $this, 'maybe_process_new_ipn' ), 1 );
+		add_action('init', array($this, 'init'), 1);
+		add_action('init', array($this, 'maybe_process_ipn'), 100);
+		add_action('init', array($this, 'wpinv_actions'));
+		add_action('init', array($this, 'maybe_do_authenticated_action'), 100);
+		add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'), 11);
+		add_action('wp_footer', array($this, 'wp_footer'));
+		add_action('wp_head', array($this, 'wp_head'));
+		add_action('widgets_init', array($this, 'register_widgets'));
+		add_filter('wpseo_exclude_from_sitemap_by_post_ids', array($this, 'wpseo_exclude_from_sitemap_by_post_ids'));
+		add_filter('the_seo_framework_sitemap_supported_post_types', array($this, 'exclude_invoicing_post_types'));
+		add_filter('pre_get_posts', array(&$this, 'pre_get_posts'));
+
+		add_filter('query_vars', array($this, 'custom_query_vars'));
+		add_action('init', array($this, 'add_rewrite_rule'), 10, 0);
+		add_action('pre_get_posts', array($this, 'maybe_process_new_ipn'), 1);
 
 		// Fires after registering actions.
-		do_action( 'wpinv_actions', $this );
-		do_action( 'getpaid_actions', $this );
+		do_action('wpinv_actions', $this);
+		do_action('getpaid_actions', $this);
 	}
 
 	public function plugins_loaded() {
 		/* Internationalize the text strings used. */
 		$this->load_textdomain();
 
-		do_action( 'wpinv_loaded' );
+		do_action('wpinv_loaded');
 
 		// Fix oxygen page builder conflict
-		if ( function_exists( 'ct_css_output' ) ) {
+		if (function_exists('ct_css_output')) {
 			wpinv_oxygen_fix_conflict();
 		}
 	}
@@ -162,9 +162,9 @@ 
 	 */
 	public function load_textdomain() {
 		// Determines the current locale.
-		if ( function_exists( 'determine_locale' ) ) {
+		if (function_exists('determine_locale')) {
 			$locale = determine_locale();
-		} else if ( function_exists( 'get_user_locale' ) ) {
+		} else if (function_exists('get_user_locale')) {
 			$locale = get_user_locale();
 		} else {
 			$locale = get_locale();
@@ -173,11 +173,11 @@ 
 		/**
 		 * Filter the locale to use for translations.
 		 */
-		$locale = apply_filters( 'plugin_locale', $locale, 'invoicing' );
+		$locale = apply_filters('plugin_locale', $locale, 'invoicing');
 
-		unload_textdomain( 'invoicing', true );
-		load_textdomain( 'invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo' );
-		load_plugin_textdomain( 'invoicing', false, plugin_basename( dirname( WPINV_PLUGIN_FILE ) ) . '/languages/' );
+		unload_textdomain('invoicing', true);
+		load_textdomain('invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo');
+		load_plugin_textdomain('invoicing', false, plugin_basename(dirname(WPINV_PLUGIN_FILE)) . '/languages/');
 	}
 
 	/**
@@ -210,9 +210,9 @@ 
 
 		// Register autoloader.
 		try {
-			spl_autoload_register( array( $this, 'autoload' ), true );
-		} catch ( Exception $e ) {
-			wpinv_error_log( $e->getMessage(), '', __FILE__, 149, true );
+			spl_autoload_register(array($this, 'autoload'), true);
+		} catch (Exception $e) {
+			wpinv_error_log($e->getMessage(), '', __FILE__, 149, true);
 		}
 
 		require_once WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-session.php';
@@ -238,7 +238,7 @@ 
 		require_once WPINV_PLUGIN_DIR . 'widgets/invoice.php';
 		require_once WPINV_PLUGIN_DIR . 'includes/admin/admin-pages.php';
 
-		if ( is_admin() || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
+		if (is_admin() || (defined('WP_CLI') && WP_CLI)) {
 			GetPaid_Post_Types_Admin::init();
 
 			require_once WPINV_PLUGIN_DIR . 'includes/admin/wpinv-admin-functions.php';
@@ -249,15 +249,15 @@ 
 			require_once WPINV_PLUGIN_DIR . 'includes/admin/class-getpaid-admin-profile.php';
 			// load the user class only on the users.php page
 			global $pagenow;
-			if ( $pagenow == 'users.php' ) {
+			if ($pagenow == 'users.php') {
 				new WPInv_Admin_Users();
 			}
 		}
 
 		// Register cli commands
-		if ( defined( 'WP_CLI' ) && WP_CLI ) {
+		if (defined('WP_CLI') && WP_CLI) {
 			require_once WPINV_PLUGIN_DIR . 'includes/class-wpinv-cli.php';
-			WP_CLI::add_command( 'invoicing', 'WPInv_CLI' );
+			WP_CLI::add_command('invoicing', 'WPInv_CLI');
 		}
 	}
 
@@ -269,20 +269,20 @@ 
 	 * @since       1.0.19
 	 * @return      void
 	 */
-	public function autoload( $class_name ) {
+	public function autoload($class_name) {
 		// Normalize the class name...
-		$class_name  = strtolower( $class_name );
+		$class_name = strtolower($class_name);
 
 		// ... and make sure it is our class.
-		if ( false === strpos( $class_name, 'getpaid_' ) && false === strpos( $class_name, 'wpinv_' ) ) {
+		if (false === strpos($class_name, 'getpaid_') && false === strpos($class_name, 'wpinv_')) {
 			return;
 		}
 
 		// Next, prepare the file name from the class.
-		$file_name = 'class-' . str_replace( '_', '-', $class_name ) . '.php';
+		$file_name = 'class-' . str_replace('_', '-', $class_name) . '.php';
 
 		// Base path of the classes.
-		$plugin_path = untrailingslashit( WPINV_PLUGIN_DIR );
+		$plugin_path = untrailingslashit(WPINV_PLUGIN_DIR);
 
 		// And an array of possible locations in order of importance.
 		$locations = array(
@@ -297,9 +297,9 @@ 
 			"$plugin_path/includes/admin/meta-boxes",
 		);
 
-		foreach ( apply_filters( 'getpaid_autoload_locations', $locations ) as $location ) {
-			if ( file_exists( trailingslashit( $location ) . $file_name ) ) {
-				include trailingslashit( $location ) . $file_name;
+		foreach (apply_filters('getpaid_autoload_locations', $locations) as $location) {
+			if (file_exists(trailingslashit($location) . $file_name)) {
+				include trailingslashit($location) . $file_name;
 				break;
 			}
 		}
@@ -310,7 +310,7 @@ 
 	 */
 	public function init() {
 		// Fires before getpaid inits.
-		do_action( 'before_getpaid_init', $this );
+		do_action('before_getpaid_init', $this);
 
 		// Maybe upgrade.
 		$this->maybe_upgrade_database();
@@ -327,17 +327,17 @@ 
 			)
 		);
 
-		foreach ( $gateways as $id => $class ) {
-			$this->gateways[ $id ] = new $class();
+		foreach ($gateways as $id => $class) {
+			$this->gateways[$id] = new $class();
 		}
 
-		if ( 'yes' != get_option( 'wpinv_renamed_gateways' ) ) {
+		if ('yes' != get_option('wpinv_renamed_gateways')) {
 			GetPaid_Installer::rename_gateways_label();
-			update_option( 'wpinv_renamed_gateways', 'yes' );
+			update_option('wpinv_renamed_gateways', 'yes');
 		}
 
 		// Fires after getpaid inits.
-		do_action( 'getpaid_init', $this );
+		do_action('getpaid_init', $this);
 	}
 
 	/**
@@ -345,51 +345,51 @@ 
 	 */
 	public function maybe_process_ipn() {
 		// Ensure that this is an IPN request.
-		if ( empty( $_GET['wpi-listener'] ) || 'IPN' !== $_GET['wpi-listener'] || empty( $_GET['wpi-gateway'] ) ) {
+		if (empty($_GET['wpi-listener']) || 'IPN' !== $_GET['wpi-listener'] || empty($_GET['wpi-gateway'])) {
 			return;
 		}
 
-		$gateway = sanitize_text_field( $_GET['wpi-gateway'] );
+		$gateway = sanitize_text_field($_GET['wpi-gateway']);
 
-		do_action( 'wpinv_verify_payment_ipn', $gateway );
-		do_action( "wpinv_verify_{$gateway}_ipn" );
+		do_action('wpinv_verify_payment_ipn', $gateway);
+		do_action("wpinv_verify_{$gateway}_ipn");
 		exit;
 	}
 
 	public function enqueue_scripts() {
 		// Fires before adding scripts.
-		do_action( 'getpaid_enqueue_scripts' );
+		do_action('getpaid_enqueue_scripts');
 
 		$localize                         = array();
-		$localize['ajax_url']             = admin_url( 'admin-ajax.php' );
+		$localize['ajax_url']             = admin_url('admin-ajax.php');
 		$localize['thousands']            = wpinv_thousands_separator();
 		$localize['decimals']             = wpinv_decimal_separator();
-		$localize['nonce']                = wp_create_nonce( 'wpinv-nonce' );
-		$localize['txtComplete']          = __( 'Continue', 'invoicing' );
+		$localize['nonce']                = wp_create_nonce('wpinv-nonce');
+		$localize['txtComplete']          = __('Continue', 'invoicing');
 		$localize['UseTaxes']             = wpinv_use_taxes();
-		$localize['formNonce']            = wp_create_nonce( 'getpaid_form_nonce' );
-		$localize['loading']              = __( 'Loading...', 'invoicing' );
-		$localize['connectionError']      = __( 'Could not establish a connection to the server.', 'invoicing' );
+		$localize['formNonce']            = wp_create_nonce('getpaid_form_nonce');
+		$localize['loading']              = __('Loading...', 'invoicing');
+		$localize['connectionError']      = __('Could not establish a connection to the server.', 'invoicing');
 		$localize['recaptchaSettings']    = getpaid_get_recaptcha_settings();
 
-		$localize = apply_filters( 'wpinv_front_js_localize', $localize );
+		$localize = apply_filters('wpinv_front_js_localize', $localize);
 
 		// reCaptcha.
-		if ( getpaid_is_recaptcha_enabled() && ( $recaptcha_js = getpaid_recaptcha_api_url() ) ) {
-			wp_enqueue_script( 'recaptcha', $recaptcha_js, array(), null, true ); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion
+		if (getpaid_is_recaptcha_enabled() && ($recaptcha_js = getpaid_recaptcha_api_url())) {
+			wp_enqueue_script('recaptcha', $recaptcha_js, array(), null, true); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion
 		}
 
-		wp_enqueue_script( 'wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.min.js', array( 'jquery' ), WPINV_VERSION, true );
-		wp_localize_script( 'wpinv-front-script', 'WPInv', $localize );
+		wp_enqueue_script('wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.min.js', array('jquery'), WPINV_VERSION, true);
+		wp_localize_script('wpinv-front-script', 'WPInv', $localize);
 	}
 
 	public function wpinv_actions() {
-		if ( isset( $_REQUEST['wpi_action'] ) ) {
-			do_action( 'wpinv_' . wpinv_sanitize_key( $_REQUEST['wpi_action'] ), $_REQUEST );
+		if (isset($_REQUEST['wpi_action'])) {
+			do_action('wpinv_' . wpinv_sanitize_key($_REQUEST['wpi_action']), $_REQUEST);
 		}
 
-		if ( defined( 'WP_ALL_IMPORT_ROOT_DIR' ) ) {
-			include plugin_dir_path( __FILE__ ) . 'libraries/wp-all-import/class-getpaid-wp-all-import.php';
+		if (defined('WP_ALL_IMPORT_ROOT_DIR')) {
+			include plugin_dir_path(__FILE__) . 'libraries/wp-all-import/class-getpaid-wp-all-import.php';
 		}
 	}
 
@@ -400,21 +400,21 @@ 
 	 * current user owns the invoice/subscription.
 	 */
 	public function maybe_do_authenticated_action() {
-		if ( isset( $_REQUEST['getpaid-action'] ) && isset( $_REQUEST['getpaid-nonce'] ) && wp_verify_nonce( $_REQUEST['getpaid-nonce'], 'getpaid-nonce' ) ) {
-			$key  = sanitize_key( $_REQUEST['getpaid-action'] );
-			$data = wp_unslash( $_REQUEST );
+		if (isset($_REQUEST['getpaid-action']) && isset($_REQUEST['getpaid-nonce']) && wp_verify_nonce($_REQUEST['getpaid-nonce'], 'getpaid-nonce')) {
+			$key  = sanitize_key($_REQUEST['getpaid-action']);
+			$data = wp_unslash($_REQUEST);
 
-			if ( is_user_logged_in() ) {
-				do_action( "getpaid_authenticated_action_$key", $data );
+			if (is_user_logged_in()) {
+				do_action("getpaid_authenticated_action_$key", $data);
 			}
 
-			do_action( "getpaid_unauthenticated_action_$key", $data );
+			do_action("getpaid_unauthenticated_action_$key", $data);
 		}
 	}
 
-	public function pre_get_posts( $wp_query ) {
-		if ( ! is_admin() && ! empty( $wp_query->query_vars['post_type'] ) && getpaid_is_invoice_post_type( $wp_query->query_vars['post_type'] ) && is_user_logged_in() && is_single() && $wp_query->is_main_query() ) {
-			$wp_query->query_vars['post_status'] = array_keys( wpinv_get_invoice_statuses( false, false, $wp_query->query_vars['post_type'] ) );
+	public function pre_get_posts($wp_query) {
+		if (!is_admin() && !empty($wp_query->query_vars['post_type']) && getpaid_is_invoice_post_type($wp_query->query_vars['post_type']) && is_user_logged_in() && is_single() && $wp_query->is_main_query()) {
+			$wp_query->query_vars['post_status'] = array_keys(wpinv_get_invoice_statuses(false, false, $wp_query->query_vars['post_type']));
 		}
 
 		return $wp_query;
@@ -429,17 +429,17 @@ 
 
 		// Currently, UX Builder does not work particulaly well with SuperDuper.
 		// So we disable our widgets when editing a page with UX Builder.
-		if ( function_exists( 'ux_builder_is_active' ) && ux_builder_is_active() ) {
+		if (function_exists('ux_builder_is_active') && ux_builder_is_active()) {
 			return;
 		}
 
-		$block_widget_init_screens = function_exists( 'sd_pagenow_exclude' ) ? sd_pagenow_exclude() : array();
+		$block_widget_init_screens = function_exists('sd_pagenow_exclude') ? sd_pagenow_exclude() : array();
 
-		if ( is_admin() && $pagenow && in_array( $pagenow, $block_widget_init_screens ) ) {
+		if (is_admin() && $pagenow && in_array($pagenow, $block_widget_init_screens)) {
 			// don't initiate in these conditions.
 		} else {
 			// Only load allowed widgets.
-			$exclude = function_exists( 'sd_widget_exclude' ) ? sd_widget_exclude() : array();
+			$exclude = function_exists('sd_widget_exclude') ? sd_widget_exclude() : array();
 			$widgets = apply_filters(
 				'getpaid_widget_classes',
 				array(
@@ -455,15 +455,15 @@ 
 			);
 
 			// For each widget...
-			foreach ( $widgets as $widget ) {
+			foreach ($widgets as $widget) {
 				// Abort early if it is excluded for this page.
-				if ( in_array( $widget, $exclude ) ) {
+				if (in_array($widget, $exclude)) {
 					continue;
 				}
 
 				// SD V1 used to extend the widget class. V2 does not, so we cannot call register widget on it.
-				if ( is_subclass_of( $widget, 'WP_Widget' ) ) {
-					register_widget( $widget );
+				if (is_subclass_of($widget, 'WP_Widget')) {
+					register_widget($widget);
 				} else {
 					new $widget();
 				}
@@ -480,28 +480,28 @@ 
 		// Ensure the database tables are up to date.
 		GetPaid_Installer::maybe_create_db_tables();
 
-		$wpi_version = get_option( 'wpinv_version', 0 );
+		$wpi_version = get_option('wpinv_version', 0);
 
-		if ( $wpi_version == WPINV_VERSION ) {
+		if ($wpi_version == WPINV_VERSION) {
 			return;
 		}
 
 		$installer = new GetPaid_Installer();
 
-		if ( empty( $wpi_version ) ) {
-			return $installer->upgrade_db( 0 );
+		if (empty($wpi_version)) {
+			return $installer->upgrade_db(0);
 		}
 
-		$upgrades  = array(
+		$upgrades = array(
 			'0.0.5' => '004',
 			'1.0.3' => '102',
 			'2.0.0' => '118',
 			'2.8.0' => '279',
 		);
 
-		foreach ( $upgrades as $key => $method ) {
-			if ( version_compare( $wpi_version, $key, '<' ) ) {
-				return $installer->upgrade_db( $method );
+		foreach ($upgrades as $key => $method) {
+			if (version_compare($wpi_version, $key, '<')) {
+				return $installer->upgrade_db($method);
 			}
 		}
 	}
@@ -512,11 +512,11 @@ 
 	 * @since 2.0.8
 	 */
 	public function maybe_flush_permalinks() {
-		$flush = get_option( 'wpinv_flush_permalinks', 0 );
+		$flush = get_option('wpinv_flush_permalinks', 0);
 
-		if ( ! empty( $flush ) ) {
+		if (!empty($flush)) {
 			flush_rewrite_rules();
-			delete_option( 'wpinv_flush_permalinks' );
+			delete_option('wpinv_flush_permalinks');
 		}
 	}
 
@@ -526,9 +526,9 @@ 
 	 * @since 1.0.19
 	 * @param int[] $excluded_posts_ids
 	 */
-	public function wpseo_exclude_from_sitemap_by_post_ids( $excluded_posts_ids ) {
+	public function wpseo_exclude_from_sitemap_by_post_ids($excluded_posts_ids) {
 		// Ensure that we have an array.
-		if ( ! is_array( $excluded_posts_ids ) ) {
+		if (!is_array($excluded_posts_ids)) {
 			$excluded_posts_ids = array();
 		}
 
@@ -536,25 +536,25 @@ 
 		$our_pages = array();
 
 		// Checkout page.
-		$our_pages[] = wpinv_get_option( 'checkout_page', false );
+		$our_pages[] = wpinv_get_option('checkout_page', false);
 
 		// Success page.
-		$our_pages[] = wpinv_get_option( 'success_page', false );
+		$our_pages[] = wpinv_get_option('success_page', false);
 
 		// Failure page.
-		$our_pages[] = wpinv_get_option( 'failure_page', false );
+		$our_pages[] = wpinv_get_option('failure_page', false);
 
 		// History page.
-		$our_pages[] = wpinv_get_option( 'invoice_history_page', false );
+		$our_pages[] = wpinv_get_option('invoice_history_page', false);
 
 		// Subscriptions page.
-		$our_pages[] = wpinv_get_option( 'invoice_subscription_page', false );
+		$our_pages[] = wpinv_get_option('invoice_subscription_page', false);
 
-		$our_pages   = array_map( 'intval', array_filter( $our_pages ) );
+		$our_pages   = array_map('intval', array_filter($our_pages));
 
 		$excluded_posts_ids = $excluded_posts_ids + $our_pages;
 
-		return array_unique( $excluded_posts_ids );
+		return array_unique($excluded_posts_ids);
 	}
 
 	/**
@@ -563,14 +563,14 @@ 
 	 * @since 1.0.19
 	 * @param string[] $post_types
 	 */
-	public function exclude_invoicing_post_types( $post_types ) {
+	public function exclude_invoicing_post_types($post_types) {
 		// Ensure that we have an array.
-		if ( ! is_array( $post_types ) ) {
+		if (!is_array($post_types)) {
 			$post_types = array();
 		}
 
 		// Remove our post types.
-		return array_diff( $post_types, array_keys( getpaid_get_invoice_post_types() ) );
+		return array_diff($post_types, array_keys(getpaid_get_invoice_post_types()));
 	}
 
 	/**
@@ -579,7 +579,7 @@ 
 	 * @since 2.0.0
 	 */
 	public function wp_footer() {
-		wpinv_get_template( 'frontend-footer.php' );
+		wpinv_get_template('frontend-footer.php');
 	}
 
 	/**
@@ -588,14 +588,14 @@ 
 	 * @since 2.0.0
 	 */
 	public function wp_head() {
-		wpinv_get_template( 'frontend-head.php' );
+		wpinv_get_template('frontend-head.php');
 	}
 
 	/**
 	 * Custom query vars.
 	 *
 	 */
-	public function custom_query_vars( $vars ) {
+	public function custom_query_vars($vars) {
 		$vars[] = 'getpaid-ipn';
 		return $vars;
 	}
@@ -606,26 +606,26 @@ 
 	 */
 	public function add_rewrite_rule() {
 		$tag = 'getpaid-ipn';
-		add_rewrite_tag( "%$tag%", '([^&]+)' );
-		add_rewrite_rule( "^$tag/([^/]*)/?", "index.php?$tag=\$matches[1]", 'top' );
+		add_rewrite_tag("%$tag%", '([^&]+)');
+		add_rewrite_rule("^$tag/([^/]*)/?", "index.php?$tag=\$matches[1]", 'top');
 	}
 
 	/**
 	 * Processes non-query string ipns.
 	 *
 	 */
-	public function maybe_process_new_ipn( $query ) {
-		if ( is_admin() || ! $query->is_main_query() ) {
+	public function maybe_process_new_ipn($query) {
+		if (is_admin() || !$query->is_main_query()) {
 			return;
 		}
 
-		$gateway = get_query_var( 'getpaid-ipn' );
+		$gateway = get_query_var('getpaid-ipn');
 
-		if ( ! empty( $gateway ) ) {
-			$gateway = sanitize_text_field( $gateway );
+		if (!empty($gateway)) {
+			$gateway = sanitize_text_field($gateway);
 			nocache_headers();
-			do_action( 'wpinv_verify_payment_ipn', $gateway );
-			do_action( "wpinv_verify_{$gateway}_ipn" );
+			do_action('wpinv_verify_payment_ipn', $gateway);
+			do_action("wpinv_verify_{$gateway}_ipn");
 			exit;
 		}
 	}