<?php

/*
 * All order status related features.
 */

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

class PARTNERCENTER_API_WooCommerce_Order_Status_Class
{
    /**
     * PARTNERCENTER_API_WooCommerce_Order_Status_Class constructor.
     */
    public function __construct()
    {

        // Listen to new orders
        add_action('woocommerce_new_order', [$this, 'woocommerce_new_order'], 94839877, 2);

        // Listen to order updates
        add_action('woocommerce_update_order', [$this, 'woocommerce_update_order'], 94839877, 2);

        // Listen to new orders by admin
        add_action('woocommerce_process_shop_order_meta', [$this, 'woocommerce_process_shop_order_meta'], 9876, 1);

        // Listen to button click
        add_action('partnercenter_api_send_order_items', [$this, 'partnercenter_api_send_order_items'], 20, 1);

        // Listen to button click
        add_action('partnercenter_api_retrieve_order', [$this, 'partnercenter_api_retrieve_order'], 20, 1);

        // Listen for cron event
        add_action('partnercenter_api_fetch_orders_status', [$this, 'partnercenter_api_fetch_orders_status'], 20);

    }

    /**
     * Run API request on new order.
     *
     * @param WC_Order order
     *
     * @since 1.0.0
     */
    public function woocommerce_new_order(int $order_id, $order)
    {

        // Build a hash over addresses
        $address_string = $order->get_formatted_billing_address().$order->get_formatted_shipping_address();
        $new_address_hash = md5($address_string);
        // Store hash of addresses as meta data
        add_post_meta($order_id, '_partnercenter_api_address_hash', $new_address_hash, true);

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Notify PARTNERCENTER about new order
        $added = $partnercenter->new_order($order_id);
        if ($added) {
            // Add flag about sent order
            update_post_meta($order_id, '_partnercenter_api_order_added', time());
        }

    }

    /**
     * Handle new orders from admin screen.
     *
     * @param  $order_id  integer
     */
    public function woocommerce_process_shop_order_meta(int $order_id)
    {

        // Check if order needs handling- if value isset the order has been send to API on "thank you" page
        if (! empty(get_post_meta($order_id, '_partnercenter_api_order_added', true))) {
            return;
        }

        // Get order object
        $order = new WC_Order($order_id);

        // Check if email was given
        if (empty($order->get_billing_email())) {
            return;
        }

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Notify PARTNERCENTER about new order
        $added = $partnercenter->new_order($order_id);
        if ($added) {
            // Add flag about sent order
            update_post_meta($order_id, '_partnercenter_api_order_added', time());
        }

    }

    /**
     * Run API request on order update.
     *
     * @param  WC_Order  $order
     *
     * @since 1.0.0
     */
    public function woocommerce_update_order(int $order_id, $order)
    {

        // Build a hash over addresses
        $address_string = $order->get_formatted_billing_address().$order->get_formatted_shipping_address();
        $new_address_hash = md5($address_string);

        // Get old address hash
        $old_address_hash = get_post_meta($order_id, '_partnercenter_api_address_hash', true);

        // Check if address data has changed
        if ($old_address_hash === $new_address_hash) {

            // Address had not been changed
            return;
        }

        // Update hash of addresses as meta data
        update_post_meta($order_id, '_partnercenter_api_address_hash', $new_address_hash);

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Notify PARTNERCENTER API about updated addresses
        $partnercenter->update_order($order_id);

    }

    /**
     * Run API request on order forwarding form action.
     *
     *
     * @since 1.0.0
     */
    public function partnercenter_api_send_order_items(int $order_id)
    {

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Notify PARTNERCENTER about order content
        $received = $partnercenter->send_order_items($order_id);
        // Exit on error
        if ($received === false) {
            return;
        }

        // Add a value to be overwritten by cron job
        add_post_meta($order_id, '_partnercenter_api_order_status', 'open', true);

        /*
         * Add order ID to list of orders to check regularly
         */
        // Get list of orders to add to
        $unclear_orders = get_option('_partnercenter_api_unclear_order_ids', []);

        // Add current order ID to list
        $unclear_orders[] = intval($order_id);

        // Save new list of unclear order ids
        update_option('_partnercenter_api_unclear_order_ids', $unclear_orders, false);

    }

    /**
     * Run API request to retrieve order from shipment.
     *
     *
     * @since 1.2.0
     */
    public function partnercenter_api_retrieve_order(int $order_id)
    {

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Notify PARTNERCENTER about retrieved order
        $received = $partnercenter->retrieve_order($order_id);
        // Exit on error
        if ($received === false) {
            return;
        }

        // Remove value to make order free again
        delete_post_meta($order_id, '_partnercenter_api_order_status');

        // Mark order to be canceled in API
        update_post_meta($order_id, '_partnercenter_api_order_canceled', time());

        /*
         * Add order ID to list of orders to check regularly
         */
        // Get list of orders to add to
        $unclear_orders = get_option('_partnercenter_api_unclear_order_ids', []);

        $found_key = array_search($order_id, $unclear_orders);
        if ($found_key === false) {
            return;
        }

        // Remove order from list of orders to check
        unset($unclear_orders[$found_key]);

        // Save new list of unclear order ids
        update_option('_partnercenter_api_unclear_order_ids', $unclear_orders, false);

    }

    /**
     * Handle cron event call.
     *
     * @since 1.0.0
     */
    public function partnercenter_api_fetch_orders_status()
    {

        // Get list of unclear orders
        $unclear_orders = get_option('_partnercenter_api_unclear_order_ids', []);
        if (empty($unclear_orders)) {
            // No orders to check
            return;
        }

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Ask PARTNERCENTER about current status
        $new_statuses = $partnercenter->get_orders_status($unclear_orders);
        if (empty($new_statuses)) {
            // No orders to check or connection error
            return;
        }

        // Loop all received order statues
        foreach ($new_statuses as $order_key => $order_status) {

            // Store new status
            update_post_meta($order_key, '_partnercenter_api_order_status', sanitize_title($order_status));

            // AP-38: Endzustände aus der Nachfrage-Liste nehmen — sonst werden
            // abgeholte/stornierte Bestellungen stündlich weiter abgefragt.
            if (! in_array($order_status, ['close', 'sent', 'pick_up', 'cancel'])) {
                continue;
            }

            // Search order ID in list of unclear orders
            $key_in_array = array_search($order_key, $unclear_orders);

            // Remove order after it shipped
            unset($unclear_orders[$key_in_array]);

        }

        // Save new list of unclear order IDs
        update_option('_partnercenter_api_unclear_order_ids', $unclear_orders, false);

    }
}

new PARTNERCENTER_API_WooCommerce_Order_Status_Class;