<?php
/**
 * Adverships_Affiliate_Tracking
 *
 * Storefront click tracking. Enqueues the click snippet (which sets the av_aff
 * cookie + beacons the click to reclink.php) and captures the attribution onto
 * the WooCommerce order at checkout so the order webhook has a durable record
 * even if the cookie is gone by the time the status changes.
 */

if (!defined('ABSPATH')) {
    exit;
}

class Adverships_Affiliate_Tracking {

    const COOKIE = 'av_aff';

    public function hooks() {
        // Only emit the snippet when connected — no point tracking to nowhere.
        if (Adverships_Affiliate_Client::is_connected()) {
            add_action('wp_enqueue_scripts', array($this, 'enqueue'));
        }
        // Capture attribution onto the order as it's created (classic + blocks).
        add_action('woocommerce_checkout_create_order', array($this, 'capture_to_order'), 10, 2);
        add_action('woocommerce_store_api_checkout_update_order_from_request', array($this, 'capture_to_order_blocks'), 10, 2);
    }

    public function enqueue() {
        wp_register_script(
            'adverships-affiliate-click',
            ADVERSHIPS_AFF_URL . 'assets/js/adverships-click.js',
            array(),
            ADVERSHIPS_AFF_VERSION,
            true
        );
        wp_localize_script('adverships-affiliate-click', 'ADVERSHIPS_AFF', array(
            'reclink' => Adverships_Affiliate_Client::api_base() . '/connector/reclink.php',
        ));
        wp_enqueue_script('adverships-affiliate-click');
    }

    /**
     * Read the av_aff cookie and store the parsed attribution on the order meta.
     * Stored once at creation so a later status transition reports the right
     * creator even if the cookie has since expired.
     *
     * @param WC_Order $order
     */
    public function capture_to_order($order, $data = null) {
        $attr = self::read_cookie_attribution();
        if (empty($attr['t'])) {
            return;
        }
        $order->update_meta_data('_adverships_t', $attr['t']);
        if (!empty($attr['d']))   { $order->update_meta_data('_adverships_d', $attr['d']); }
        if (!empty($attr['cid'])) { $order->update_meta_data('_adverships_cid', $attr['cid']); }
        if (!empty($attr['landing'])) { $order->update_meta_data('_adverships_landing', $attr['landing']); }
    }

    /** Blocks/Store-API checkout variant (different hook signature). */
    public function capture_to_order_blocks($order, $request = null) {
        $this->capture_to_order($order);
    }

    /**
     * Parse the av_aff cookie into ['t','d','cid','landing'].
     * @return array
     */
    public static function read_cookie_attribution() {
        $out = array('t' => '', 'd' => '', 'cid' => '', 'landing' => '');
        if (empty($_COOKIE[self::COOKIE])) {
            return $out;
        }
        $raw = wp_unslash($_COOKIE[self::COOKIE]); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput -- parsed + sanitized below
        $pairs = array();
        parse_str((string) $raw, $pairs);
        $out['t']       = isset($pairs['t'])   ? sanitize_text_field($pairs['t'])   : '';
        $out['d']       = isset($pairs['d'])   ? sanitize_text_field($pairs['d'])   : '';
        $out['cid']     = isset($pairs['cid']) ? sanitize_text_field($pairs['cid']) : '';
        $ref = isset($_SERVER['HTTP_REFERER']) ? esc_url_raw(wp_unslash($_SERVER['HTTP_REFERER'])) : '';
        $out['landing'] = $ref;
        return $out;
    }
}