Check WooCommerce is active during plugin initialization

composer.json

@@ -0,0 +1,24 @@
+{
+    "name": "alexminza/wc-alcohol",
+    "description": "WooCommerce Alcohol Sale Restrictions",
+    "type": "wordpress-plugin",
+    "keywords": ["woocommerce", "alcohol", "sale", "restriction"],
+    "homepage": "https://github.com/alexminza/wc-alcohol",
+    "license": "GPL-3.0-or-later",
+    "authors": [
+        {
+            "name": "Alexander Minza",
+            "homepage": "http://alexminza.com",
+            "role": "Developer"
+        }
+    ],
+    "support": {
+        "issues": "https://github.com/alexminza/wc-alcohol/issues",
+        "forum": "https://wordpress.org/support/plugin/wc-alcohol",
+        "source": "https://github.com/alexminza/wc-alcohol"
+    },
+    "require": {
+        "php": ">=7.0",
+        "composer/installers": "~1.2"
+    }
+}

readme.txt

@@ -33,6 +33,9 @@ Use the WooCommerce -> Settings -> Products -> Alcohol sale restrictions screen
 
 == Changelog ==
 
+= 1.0.3 =
+Check WooCommerce is active during plugin initialization
+
 = 1.0.2 =
 Display warning options on product and category pages
 
@@ -41,5 +44,5 @@ Initial release
 
 == Upgrade Notice ==
 
-= 1.0.2 =
-Display warning options on product and category pages
+= 1.0.3 =
+Check WooCommerce is active during plugin initialization

wc-alcohol.php

@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Alcohol Sale Restrictions
  * Description: WooCommerce alcohol sale limitations during restriction hours
  * Plugin URI: https://wordpress.org/plugins/wc-alcohol/
- * Version: 1.0.2
+ * Version: 1.0.3
  * Author: Alexander Minza
  * Author URI: https://profiles.wordpress.org/alexminza
  * Developer: Alexander Minza
@@ -15,7 +15,7 @@
  * Requires at least: 4.8
  * Tested up to: 4.9.4
  * WC requires at least: 3.2
- * WC tested up to: 3.3.3
+ * WC tested up to: 3.3.4
  */
 
 //Looking to contribute code to this plugin? Go ahead and fork the repository over at GitHub https://github.com/alexminza/wc-alcohol
@@ -401,12 +401,14 @@ protected static function string_empty($string) {
 		}
 
 		//https://docs.woocommerce.com/document/create-a-plugin/
-		protected static function check_wc_active() {
+		public static function is_wc_active() {
 			//Check if WooCommerce is active
 			return in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins')));
 		}
 	}
 
-	//initialize plugin
-	add_action('plugins_loaded', array(WC_Alcohol::class, 'get_instance'));
+	if(WC_Alcohol::is_wc_active()) {
+		//initialize plugin
+		add_action('plugins_loaded', array(WC_Alcohol::class, 'get_instance'));
+	}
 endif;