<?php
/**
 * Plugin Name:       Mintveo
 * Description:       Attributes WooCommerce orders to the ad click that earned them, by tagging the visit server-side and attaching the reference to the order.
 * Version:           1.1.0
 * Requires at least: 6.5
 * Requires PHP:      7.4
 * Author:            Mintveo
 * Author URI:        https://mintveo.com
 * License:           GPL-2.0-or-later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       mintveo
 *
 * @package Mintveo_For_WooCommerce
 */

/**
 * This plugin contacts Mintveo only after the admin clicks "Connect to Mintveo"
 * (explicit, user-initiated consent). Once connected, it reports
 * each tracked-link click from the store's server and a storefront script reports
 * pageviews, and it sends the product catalog (name, SKU, link, price, stock, main image); it writes a cookie and attaches a reference to the order, and the order
 * travels over WooCommerce's own webhooks, which the admin can delete at any time.
 * With the "Let Mintveo manage your pixels" setting on (off by default), the storefront
 * script also loads the store owner's own Meta, TikTok, Snapchat and Google Ads pixels.
 */

defined( 'ABSPATH' ) || exit;

define( 'MINTVEO_VERSION', '1.1.0' );
define( 'MINTVEO_FILE', __FILE__ );

/**
 * With "Let Mintveo manage your pixels" on, Mintveo fires the store's pixels itself, so
 * Meta for WooCommerce and Snapchat for WooCommerce stop their own pixel and server events
 * (their catalog sync stays) and each sale is counted once. Added here, before those
 * plugins load, because Snapchat for WooCommerce reads its setting while loading.
 */
$mintveo_settings = get_option( 'woocommerce_mintveo_settings', array() );
if ( is_array( $mintveo_settings ) && isset( $mintveo_settings['manage_pixels'] ) && 'yes' === $mintveo_settings['manage_pixels'] ) {
	add_filter( 'facebook_for_woocommerce_integration_pixel_enabled', '__return_false' );
	add_filter( 'pre_option_snapchat_ads_pixel_enabled', 'mintveo_option_off' );
	add_filter( 'pre_option_snapchat_conversion_enabled', 'mintveo_option_off' );
}
unset( $mintveo_settings );

/**
 * A plugin option read as switched off.
 *
 * @return string
 */
function mintveo_option_off() {
	return 'no';
}

/**
 * Declare compatibility with High-Performance Order Storage.
 *
 * Orders are read and written only through the CRUD API below, never with
 * post meta functions, so both storage backends behave identically. Woo
 * requires this declaration for new marketplace submissions and shows an
 * incompatibility warning without it.
 */
add_action(
	'before_woocommerce_init',
	static function () {
		if ( class_exists( \Automattic\WooCommerce\Utilities\FeaturesUtil::class ) ) {
			\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility(
				'custom_order_tables',
				MINTVEO_FILE,
				true
			);
		}
	}
);

/**
 * Boot, but only when WooCommerce is actually active.
 *
 * Without WooCommerce the plugin activates and does nothing but show a notice
 * (no "Requires Plugins" header: it blocks activation on a site without
 * WooCommerce, which the WordPress.org runtime test reports as a failed
 * activation). A fatal error here would take the whole store down.
 */
add_action(
	'plugins_loaded',
	static function () {
		if ( ! class_exists( 'WooCommerce' ) ) {
			add_action( 'admin_notices', 'mintveo_wc_missing_woocommerce_notice' );
			return;
		}

		require_once __DIR__ . '/includes/class-mintveo-wc-tracker.php';
		require_once __DIR__ . '/includes/class-mintveo-wc-settings.php';
		require_once __DIR__ . '/includes/class-mintveo-wc-connect.php';
		require_once __DIR__ . '/includes/class-mintveo-wc-catalog.php';

		Mintveo_WC_Tracker::init();
		Mintveo_WC_Settings::init();
		Mintveo_WC_Connect::init();
		Mintveo_WC_Catalog::init();

		// An already-connected store that updates the plugin: subscribe the new webhook
		// topics with the secret it holds and send the catalog once. On init: saving a
		// webhook loads WooCommerce's translations, which must not happen earlier.
		add_action(
			'init',
			static function () {
				$secret = (string) get_option( Mintveo_WC_Settings::OPTION_SECRET, '' );
				if ( '' !== $secret && get_option( 'mintveo_wc_version' ) !== MINTVEO_VERSION ) {
					Mintveo_WC_Connect::ensure_webhooks( $secret );
					Mintveo_WC_Catalog::push_soon();
					update_option( 'mintveo_wc_version', MINTVEO_VERSION );
				}
			}
		);
	}
);

/**
 * Deactivating stops order delivery: the webhooks belong to WooCommerce and would
 * otherwise keep sending. Forgetting the version makes the 'init' check above
 * re-arm them (and resend the catalog) when the plugin is activated again.
 */
register_deactivation_hook(
	__FILE__,
	static function () {
		if ( function_exists( 'wc_get_webhook' ) && class_exists( 'Mintveo_WC_Settings' ) ) {
			foreach ( WC_Data_Store::load( 'webhook' )->get_webhooks_ids() as $id ) {
				$webhook = wc_get_webhook( $id );
				if ( $webhook && Mintveo_WC_Settings::ENDPOINT === $webhook->get_delivery_url() ) {
					$webhook->set_status( 'paused' );
					$webhook->save();
				}
			}
		}
		delete_option( 'mintveo_wc_version' );
		wp_clear_scheduled_hook( 'mintveo_catalog_push' );
		wp_clear_scheduled_hook( 'mintveo_heartbeat' );
	}
);

/**
 * Tell the merchant why nothing is happening, rather than failing silently.
 */
function mintveo_wc_missing_woocommerce_notice() {
	echo '<div class="notice notice-warning"><p>';
	esc_html_e(
		'Mintveo needs WooCommerce to be active. Activate WooCommerce to resume attributing orders.',
		'mintveo'
	);
	echo '</p></div>';
}