- implementing immutable.js

app/domain/TicketClass.js

@@ -0,0 +1,27 @@
+import { List, Record } from 'immutable';
+
+export default class TicketClass extends Record({
+  available: 0,
+  capacity: 0,
+  endSale: null,
+  id: null,
+  itemId: null,
+  name: null,
+  price: 0,
+  startSale: null,
+}) {
+  get isAlmostGone() {
+    return this.available < (this.capacity * 0.20);
+  }
+
+  get isSoldOut() {
+    return this.available === 0;
+  }
+}
+
+TicketClass.fromJS = (data = {}) => {
+  return new TicketClass({
+    id: data._id,
+    ...data,
+  });
+};