gruene-seele/dev/partnercenter-api/admin/order-forwarding-button-metabox.php

<?php
if (! defined('ABSPATH')) {
    exit;
}

/**
 * Class PARTNERCENTER_API_Order_Forwarding_Button_MetaBox
 */
class PARTNERCENTER_API_Order_Forwarding_Button_MetaBox
{
    /**
     * PARTNERCENTER_API_Order_Forwarding_Button_MetaBox constructor.
     */
    public function __construct()
    {

        if (is_admin()) {
            add_action('load-post.php', [$this, 'init_metabox']);
            add_action('load-post-new.php', [$this, 'init_metabox']);
        }

    }

    /**
     * Add methods to hooks.
     *
     * @since 1.0.0
     */
    public function init_metabox()
    {

        add_action('add_meta_boxes', [$this, 'add_metabox']);
        add_action('save_post', [$this, 'save_metabox'], 10, 2);

    }

    /**
     * Register the meta box.
     *
     * @since 1.0.0
     */
    public function add_metabox()
    {

        add_meta_box(
            'partnercenter-order-forwarding-button',
            __('Fulfillment by PARTNERCENTER', 'partnercenter-api'),
            [$this, 'render_metabox'],
            'shop_order',
            'side',
            'default'
        );

    }

    /**
     * Callback to render the meta box content.
     *
     *
     * @since 1.0.0
     */
    public function render_metabox($post)
    {

        // Add nonce for security and authentication.
        wp_nonce_field('partnercenter_api_order_forwarding_nonce_action', 'partnercenter_api_order_forwarding_nonce');

        // Retrieve an existing value from the database.
        $order_send_status = intval(get_post_meta($post->ID, '_partnercenter_api_order_fulfillment_forwarded', true));

        if ($order_send_status !== 0) { ?>
			<p>
				<?php
                printf(__('Order send at %s', 'partnercenter-api'), date(get_option('date_format'), $order_send_status));
            ?>
			</p>
			<p>
				<?php
            // Get status into var
            $order_send_status = get_post_meta($post->ID, '_partnercenter_api_order_status', true);
            // Check status
            switch ($order_send_status) {
                case 'free':
                    _e('Self-shipping.', 'partnercenter-api');
                    break;
                case 'open':
                case 'process':
                    _e('Order waiting.', 'partnercenter-api');
                    break;
                case 'sent':
                case 'close':
                    _e('Order sent.', 'partnercenter-api');
                    break;
                default:
                    _e('Unclear status.', 'partnercenter-api');
                    break;
            }
            ?>
			</p>

			<?php
            // Check if order is open
            if ($order_send_status === 'open') {
                // Show button to allow canceling order
                ?>
				<p>
					<button id="order_fulfillment_internal_retrieve" name="order_fulfillment_internal_retrieve"
					        class="button button-primary" value="yes">
						<?php esc_html_e('Retrieve', 'aloe-vera-shipment-interface'); ?>
					</button>
				</p>
			<?php } ?>

		<?php } elseif (empty(get_post_meta($post->ID, '_partnercenter_api_order_canceled', true))) { ?>

			<p>
				<button id="partnercenter_api_order_fulfillment_forwarded" name="partnercenter_api_order_fulfillment_forwarded"
				        class="button button-primary" value="yes">
					<?php _e('Send to PARTNERCENTER for fulfillment', 'partnercenter-api'); ?>
				</button>
			</p>

		<?php } else { ?>

			<p>
				<?php
                printf(__('Order canceled at PARTNERCENTER on %s', 'partnercenter-api'), date(get_option('date_format'), (int) get_post_meta($post->ID, '_partnercenter_api_order_canceled', true)));
		    ?>
			</p>

		<?php }

		}

    /**
     * Callback to handle metabox submission.
     *
     *
     * @since 1.0.0
     */
    public function save_metabox($post_id, $post)
    {

        // Add nonce for security and authentication.
        $nonce_name = isset($_POST['partnercenter_api_order_forwarding_nonce']) ? $_POST['partnercenter_api_order_forwarding_nonce'] : '';
        $nonce_action = 'partnercenter_api_order_forwarding_nonce_action';

        // Check if a nonce is set.
        if (! isset($nonce_name)) {
            return;
        }

        // Check if a nonce is valid.
        if (! wp_verify_nonce($nonce_name, $nonce_action)) {
            return;
        }

        // Check if the user has permissions to save data.
        if (! current_user_can('edit_shop_orders', $post_id)) {
            return;
        }

        // Check if it's not an autosave.
        if (wp_is_post_autosave($post_id)) {
            return;
        }

        // Check if it's not a revision.
        if (wp_is_post_revision($post_id)) {
            return;
        }

        // Sanitize and check if user wants to forward item
        if (isset($_POST['partnercenter_api_order_fulfillment_forwarded']) && sanitize_title($_POST['partnercenter_api_order_fulfillment_forwarded']) === 'yes') {

            /**
             * Call action to allow plugins to react.
             *
             * @param  int  $order_id
             */
            do_action('partnercenter_api_send_order_items', $post_id);

        }

        // Sanitize and check if user wants to retrieve item
        if (isset($_POST['order_fulfillment_internal_retrieve']) && sanitize_title($_POST['order_fulfillment_internal_retrieve']) === 'yes') {

            /**
             * Call action to allow plugins to react.
             *
             * @param  int  $order_id
             */
            do_action('partnercenter_api_retrieve_order', $post_id);

        }

    }
}

new PARTNERCENTER_API_Order_Forwarding_Button_MetaBox;