Work in progress: Initiating work around invoice number meta box for …

…orders

src/Hooks/Admin.php

@@ -72,6 +72,11 @@ public function __construct() {
 			2
 		);
 
+		add_action(
+			'add_meta_boxes',
+			array( __CLASS__, 'add_dk_invoice_metabox' )
+		);
+
 		if ( Config::get_product_convertion_to_variation_enabled() ) {
 			add_filter(
 				'bulk_actions-edit-product',
@@ -88,6 +93,21 @@ public function __construct() {
 		}
 	}
 
+	public static function add_dk_invoice_metabox() {
+		add_meta_box(
+			'1984-dk-woo-dk-invoice-metabox',
+			__( 'DK Invoice', '1984-dk-woo' ),
+			array( __CLASS__, 'render_dk_invoice_metabox' ),
+			'shop_order',
+			context: 'side',
+			priority: 'high'
+		);
+	}
+
+	public static function render_dk_invoice_metabox() {
+		require dirname( __DIR__, 2 ) . '/views/dk_invoice_metabox.php';
+	}
+
 	/**
 	 * Filter for adding the DK invoice column to the orders table
 	 *

views/dk_invoice_metabox.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types = 1);
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+$wc_order = wc_get_order( $_GET['post'] );
+
+$invoice_number        = $wc_order->get_meta( '1984_woo_dk_invoice_number', true, 'edit' );
+$credit_invoice_number = $wc_order->get_meta( '1984_woo_dk_credit_invoice_number', true, 'edit' );
+
+?>
+
+<div>
+	<div>
+		<label>Invoice Number</label>
+		<input
+			name="1984_woo_dk_invoice_number"
+			type="text"
+			value="<?php echo esc_attr( $invoice_number ); ?>"
+		/>
+	</div>
+	<div>
+		<button class="button button-small button-secondary">Set Invoice Number</button>
+		<button class="button button-small button-primary">Create in DK</button>
+	</div>
+</div>
+
+<div>
+	<label>Credit Invoice Number</label>
+	<input
+		name="1984_woo_dk_credit_invoice_number"
+		type="text"
+		value="<?php echo esc_attr( $credit_invoice_number ); ?>"
+	/>
+	<div>
+		<button class="button button-small button-secondary">Set Credit Invoice Number</button>
+	</div>
+</div>