Add subscriptions support

includes/Admin/Products.php

@@ -86,11 +86,14 @@ public static function print_style() {
 	 * @return mixed
 	 */
 	public static function product_data_tab( $tabs ) {
-		$tabs['wc_serial_numbers'] = array(
-			'label'    => __( 'Serial Numbers', 'wc-serial-numbers' ),
-			'target'   => 'wc_serial_numbers_data',
-			'class'    => array( 'show_if_simple' ),
-			'priority' => 11,
+		$tabs['wc_serial_numbers'] = apply_filters(
+			'wc_serial_numbers_product_data_tab',
+			array(
+				'label'    => __( 'Serial Numbers', 'wc-serial-numbers' ),
+				'target'   => 'wc_serial_numbers_data',
+				'class'    => array( 'show_if_simple', 'hide_if_subscription', 'hide_if_variable-subscription' ),
+				'priority' => 11,
+			)
 		);
 
 		return $tabs;

src/Admin/ListTables/KeysTable.php

@@ -124,6 +124,15 @@ public function prepare_items() {
 			'search'      => $search,
 		);
 
+		/**
+		 * Filter the query arguments for the list table.
+		 *
+		 * @param array $args An associative array of arguments.
+		 *
+		 * @since 2.0.1
+		 */
+		$args = apply_filters( 'wc_serial_numbers_keys_table_query_args', $args );
+
 		$this->items           = Key::query( $args );
 		$this->available_count = Key::count( array_merge( $args, array( 'status' => 'available' ) ) );
 		$this->pending_count   = Key::count( array_merge( $args, array( 'status' => 'pending' ) ) );

src/Models/Key.php

@@ -41,6 +41,7 @@ class Key extends Model {
 		'activation_count' => 0,
 		'order_id'         => 0,
 		'vendor_id'        => 0,
+		'subscription_id'  => 0,
 		'status'           => 'available',
 		'validity'         => 0,
 		'order_date'       => '',
@@ -330,6 +331,32 @@ public function set_vendor_id( $vendor_id ) {
 		$this->set_prop( 'vendor_id', absint( $vendor_id ) );
 	}
 
+	/**
+	 * Get the subscription id.
+	 *
+	 * @param string $context What the value is for. Valid values are 'view' and 'edit'.
+	 *
+	 * @since  1.4.6
+	 *
+	 * @return int
+	 */
+	public function get_subscription_id( $context = 'edit' ) {
+		return $this->get_prop( 'subscription_id', $context );
+	}
+
+	/**
+	 * Set the subscription id.
+	 *
+	 * @param int $subscription_id Subscription id.
+	 *
+	 * @since  2.0.1
+	 *
+	 * @return void
+	 */
+	public function set_subscription_id( $subscription_id ) {
+		$this->set_prop( 'subscription_id', absint( $subscription_id ) );
+	}
+
 	/**
 	 * Get the status.
 	 * Possible values: 'active', 'inactive', 'expired', 'cancelled', 'pending', 'failed', 'refunded', 'deleted'.

src/functions.php

@@ -541,6 +541,15 @@ function wcsn_order_update_keys( $order_id ) {
 				continue;
 			}
 
+			/**
+			 * Filter hook to alter the keys before assigning them to the order item.
+			 *
+			 * @param Key[]          $keys The keys.
+			 * @param \WC_Order_Item $item Order item.
+			 * @param \WC_Order      $order Order object.
+			 */
+			$keys = apply_filters( 'wc_serial_numbers_order_item_keys', $keys, $item, $order );
+
 			// Assign keys to order.
 			foreach ( $keys as $key ) {
 				$key->set_data(