feat(gitlab: events): add wiki_page/update - fired when wiki page is …

…updated

lib/Gitlab/Events/wiki_page-update.js

@@ -0,0 +1,30 @@
+const EventResponse = require('../EventResponse');
+
+class WikiPageUpdate extends EventResponse {
+  constructor(...args) {
+    super(...args, {
+      description: 'This event is fired when a wiki page is updated',
+    });
+  }
+
+  embed(data) {
+    const page = data.object_attributes;
+    return {
+      color: 0x29BB9C,
+      title: `Updated wiki page \`${page.title}\``,
+      description: page.content,
+    };
+  }
+
+  text(data) {
+    const actor = data.user.name;
+    const page = data.object_attributes;
+    return [
+      `📰 **${actor}** updated wiki page **${page.title}**`,
+      `        ${page.content.slice(0, 100).replace(/\n/g, '  ')}`,
+      `<${page.url}>`,
+    ].join('\n');
+  }
+}
+
+module.exports = WikiPageUpdate;