1 files changed, 39 insertions, 0 deletions
diff --git a/gui/src/shared/account-expiry.ts b/gui/src/shared/account-expiry.ts
new file mode 100644
index 0000000000..8e4c9b2ece
--- /dev/null
+++ b/gui/src/shared/account-expiry.ts
@@ -0,0 +1,39 @@
+import moment from 'moment';
+import { sprintf } from 'sprintf-js';
+import { messages } from './gettext';
+
+export default class AccountExpiry {
+  private expiry: moment.Moment;
+
+  constructor(isoString: string, locale: string) {
+    this.expiry = moment(isoString).locale(locale);
+  }
+
+  public hasExpired(): boolean {
+    return this.willHaveExpiredAt(new Date());
+  }
+
+  public willHaveExpiredAt(date: Date): boolean {
+    return this.expiry.isSameOrBefore(date);
+  }
+
+  public formattedDate(): string {
+    return this.expiry.format('L LTS');
+  }
+
+  public durationUntilExpiry(): string {
+    return this.expiry.fromNow(true);
+  }
+
+  public remainingTime(): string {
+    const duration = this.durationUntilExpiry();
+
+    return sprintf(
+      // TRANSLATORS: The remaining time left on the account displayed across the app.
+      // TRANSLATORS: Available placeholders:
+      // TRANSLATORS: %(duration)s - a localized remaining time (in minutes, hours, or days) until the account expiry
+      messages.pgettext('account-expiry', '%(duration)s left'),
+      { duration },
+    );
+  }
+}