added new custom service with slack integration helper functions; added axios package; added notifications for card create, delete, and update (move); added notifications for comment create

server/api/controllers/cards/delete.js

@@ -1,3 +1,5 @@
+const services = require('../../services/custom');
+
 const Errors = {
   NOT_ENOUGH_RIGHTS: {
     notEnoughRights: 'Not enough rights',
@@ -54,6 +56,11 @@ module.exports = {
       throw Errors.CARD_NOT_FOUND;
     }
 
+    const messageText = '*' + card.name + '* was deleted by ' + currentUser.username;
+    services.sendSlackMessage(messageText)
+      .then(() => { console.log('Slack message sent successfully.'); })
+      .catch((error) => { console.error('Failed to send Slack message:', error.message); });
+
     return {
       item: card,
     };