qdr.app.woo.plugins/studiou-wc-ord-print-statuses/includes/class-order-fields-manager.php

<?php
// Manages custom order fields rendered in the "Print Information" panel.

defined('ABSPATH') || exit;

class Order_Fields_Manager {
    /**
     * Meta key → translatable label for fields rendered as `datetime-local`.
     * The render and save loops both walk this map.
     */
    private static function datetime_fields() {
        return array(
            'to_print_date'              => __('Prepare To Print Date', 'studiou-wc-ord-print-statuses'),
            'in_print_date'              => __('In Print Date', 'studiou-wc-ord-print-statuses'),
            'external_ref_ord_date'      => __('External Order Date', 'studiou-wc-ord-print-statuses'),
            'external_ref_ord_delivered' => __('External Order Delivered', 'studiou-wc-ord-print-statuses'),
        );
    }

    /**
     * Meta key → translatable label for plain text fields.
     */
    private static function text_fields() {
        return array(
            'external_ref_ord_no' => __('External Order Number', 'studiou-wc-ord-print-statuses'),
        );
    }

    public function __construct() {
        add_action('woocommerce_admin_order_data_after_order_details', array($this, 'display_custom_order_fields'));
        add_action('woocommerce_process_shop_order_meta', array($this, 'save_custom_order_fields'));
    }

    public function display_custom_order_fields($order) {
        ?>
        <div class="order_data_column">
            <h4><?php esc_html_e('Print Information', 'studiou-wc-ord-print-statuses'); ?></h4>
            <?php
            foreach (self::datetime_fields() as $key => $label) {
                woocommerce_wp_text_input(array(
                    'id'            => $key,
                    'label'         => $label,
                    'type'          => 'datetime-local',
                    'value'         => $this->mysql_to_datetime_local($order->get_meta($key)),
                    'wrapper_class' => 'form-field-wide',
                ));
            }
            foreach (self::text_fields() as $key => $label) {
                woocommerce_wp_text_input(array(
                    'id'            => $key,
                    'label'         => $label,
                    'value'         => $order->get_meta($key),
                    'wrapper_class' => 'form-field-wide',
                ));
            }
            ?>
        </div>
        <?php
    }

    public function save_custom_order_fields($order_id) {
        if (!current_user_can('edit_shop_order', $order_id) && !current_user_can('edit_shop_orders')) {
            return;
        }
        $order = wc_get_order($order_id);
        if (!$order) {
            return;
        }

        foreach (array_keys(self::datetime_fields()) as $field) {
            if (isset($_POST[$field])) {
                $order->update_meta_data($field, $this->datetime_local_to_mysql($_POST[$field]));
            }
        }
        foreach (array_keys(self::text_fields()) as $field) {
            if (isset($_POST[$field])) {
                $order->update_meta_data($field, sanitize_text_field(wp_unslash($_POST[$field])));
            }
        }
        $order->save();
    }

    /**
     * Convert a MySQL datetime string (as written by current_time('mysql')) to
     * the HTML5 `datetime-local` format. Done as pure string reformatting so
     * the value's timezone is preserved — current_time('mysql') already uses
     * WP local time, and the browser interprets datetime-local as local time.
     * Using strtotime()/date() here would re-interpret the value in the server
     * timezone and drift on UTC-server / non-UTC-site configurations.
     */
    private function mysql_to_datetime_local($value) {
        $value = trim((string) $value);
        if ($value === '') {
            return '';
        }
        // Accepts 'YYYY-MM-DD HH:MM[:SS]' or 'YYYY-MM-DDTHH:MM[:SS]'.
        if (preg_match('/^(\d{4}-\d{2}-\d{2})[ T](\d{2}:\d{2})/', $value, $m)) {
            return $m[1] . 'T' . $m[2];
        }
        return '';
    }

    /**
     * Convert an HTML5 datetime-local form value to a MySQL datetime string.
     * No timezone conversion — the form value and the stored value are both
     * treated as WP local time (matching current_time('mysql')).
     */
    private function datetime_local_to_mysql($value) {
        $value = sanitize_text_field(wp_unslash($value));
        if ($value === '') {
            return '';
        }
        if (preg_match('/^(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2})(?::(\d{2}))?$/', $value, $m)) {
            $seconds = isset($m[3]) ? $m[3] : '00';
            return $m[1] . ' ' . $m[2] . ':' . $seconds;
        }
        return '';
    }
}