1 files changed, 80 insertions, 0 deletions
diff --git a/packages/bank-ui/src/components/Time.tsx b/packages/bank-ui/src/components/Time.tsx
new file mode 100644
index 000000000..5c8afe212
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+++ b/packages/bank-ui/src/components/Time.tsx
@@ -0,0 +1,80 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022-2024 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import { AbsoluteTime, Duration } from "@gnu-taler/taler-util";
+import { useTranslationContext } from "@gnu-taler/web-util/browser";
+import {
+  formatISO,
+  format,
+  formatDuration,
+  intervalToDuration,
+} from "date-fns";
+import { Fragment, h, VNode } from "preact";
+
+/**
+ *
+ * @param timestamp time to be formatted
+ * @param relative duration threshold, if the difference is lower
+ * the timestamp will be formatted as relative time from "now"
+ *
+ * @returns
+ */
+export function Time({
+  timestamp,
+  relative,
+  format: formatString,
+}: {
+  timestamp: AbsoluteTime | undefined;
+  relative?: Duration;
+  format: string;
+}): VNode {
+  const { i18n, dateLocale } = useTranslationContext();
+  if (!timestamp) return <Fragment />;
+
+  if (timestamp.t_ms === "never") {
+    return <time>{i18n.str`never`}</time>;
+  }
+
+  const now = AbsoluteTime.now();
+  const diff = AbsoluteTime.difference(now, timestamp);
+  if (relative && now.t_ms !== "never" && Duration.cmp(diff, relative) === -1) {
+    const d = intervalToDuration({
+      start: now.t_ms,
+      end: timestamp.t_ms,
+    });
+    d.seconds = 0;
+    const duration = formatDuration(d, { locale: dateLocale });
+    const isFuture = AbsoluteTime.cmp(now, timestamp) < 0;
+    if (isFuture) {
+      return (
+        <time dateTime={formatISO(timestamp.t_ms)}>
+          <i18n.Translate>in {duration}</i18n.Translate>
+        </time>
+      );
+    } else {
+      return (
+        <time dateTime={formatISO(timestamp.t_ms)}>
+          <i18n.Translate>{duration} ago</i18n.Translate>
+        </time>
+      );
+    }
+  }
+  return (
+    <time dateTime={formatISO(timestamp.t_ms)}>
+      {format(timestamp.t_ms, formatString, { locale: dateLocale })}
+    </time>
+  );
+}