<?php
/**
 * Adverships_Affiliate_Privacy
 *
 * Registers a WordPress privacy-policy disclosure plus an exporter/eraser for
 * the affiliate attribution this plugin stores on orders. The authoritative
 * sale records live in Adverships; here we only handle the per-order meta the
 * plugin writes locally (_adverships_t / _d / _cid / _landing).
 */

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

class Adverships_Affiliate_Privacy {

    public function hooks() {
        add_action('admin_init', array($this, 'add_privacy_content'));
        add_filter('wp_privacy_personal_data_exporters', array($this, 'register_exporter'));
        add_filter('wp_privacy_personal_data_erasers', array($this, 'register_eraser'));
    }

    public function add_privacy_content() {
        if (!function_exists('wp_add_privacy_policy_content')) {
            return;
        }
        $content = sprintf(
            /* translators: %s: Adverships URL */
            __('This site uses Adverships affiliate tracking. When a visitor arrives via an affiliate link and places an order, the order id, total, currency, and the affiliate code are sent to the Adverships service (%s) to attribute the sale. See the Adverships privacy policy for details.', 'adverships-affiliate'),
            esc_url(ADVERSHIPS_AFF_DEFAULT_API)
        );
        wp_add_privacy_policy_content('Adverships Affiliate for WooCommerce', wp_kses_post(wpautop($content)));
    }

    public function register_exporter($exporters) {
        $exporters['adverships-affiliate'] = array(
            'exporter_friendly_name' => __('Adverships Affiliate', 'adverships-affiliate'),
            'callback'               => array($this, 'export'),
        );
        return $exporters;
    }

    public function register_eraser($erasers) {
        $erasers['adverships-affiliate'] = array(
            'eraser_friendly_name' => __('Adverships Affiliate', 'adverships-affiliate'),
            'callback'             => array($this, 'erase'),
        );
        return $erasers;
    }

    /**
     * Export the affiliate attribution stored on this customer's orders.
     */
    public function export($email_address, $page = 1) {
        $items = array();
        if (function_exists('wc_get_orders')) {
            $orders = wc_get_orders(array(
                'billing_email' => $email_address,
                'limit'         => 50,
                'paged'         => max(1, (int) $page),
            ));
            foreach ($orders as $order) {
                $t = (string) $order->get_meta('_adverships_t');
                if ($t === '') {
                    continue;
                }
                $items[] = array(
                    'group_id'    => 'adverships_affiliate',
                    'group_label' => __('Adverships affiliate attribution', 'adverships-affiliate'),
                    'item_id'     => 'order-' . $order->get_id(),
                    'data'        => array(
                        array('name' => __('Order', 'adverships-affiliate'), 'value' => $order->get_order_number()),
                        array('name' => __('Affiliate code', 'adverships-affiliate'), 'value' => $t),
                    ),
                );
            }
        }
        return array('data' => $items, 'done' => true);
    }

    /**
     * Erase the affiliate attribution meta from this customer's orders.
     */
    public function erase($email_address, $page = 1) {
        $removed = false;
        if (function_exists('wc_get_orders')) {
            $orders = wc_get_orders(array(
                'billing_email' => $email_address,
                'limit'         => 50,
                'paged'         => max(1, (int) $page),
            ));
            foreach ($orders as $order) {
                $had = false;
                foreach (array('_adverships_t', '_adverships_d', '_adverships_cid', '_adverships_landing') as $key) {
                    if ($order->get_meta($key) !== '') {
                        $order->delete_meta_data($key);
                        $had = true;
                    }
                }
                if ($had) { $order->save(); $removed = true; }
            }
        }
        return array(
            'items_removed'  => $removed,
            'items_retained' => false,
            'messages'       => array(),
            'done'           => true,
        );
    }
}