1 files changed, 89 insertions, 0 deletions
diff --git a/packages/merchant-backoffice-ui/src/hooks/preference.ts b/packages/merchant-backoffice-ui/src/hooks/preference.ts
new file mode 100644
index 000000000..a21d2921c
--- /dev/null
+++ b/packages/merchant-backoffice-ui/src/hooks/preference.ts
@@ -0,0 +1,89 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021-2024 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,
+  Codec,
+  buildCodecForObject,
+  codecForAbsoluteTime,
+  codecForBoolean,
+  codecForConstString,
+  codecForEither,
+} from "@gnu-taler/taler-util";
+import { buildStorageKey, useLocalStorage } from "@gnu-taler/web-util/browser";
+
+export interface Preferences {
+  advanceOrderMode: boolean;
+  hideKycUntil: AbsoluteTime;
+  hideMissingAccountUntil: AbsoluteTime;
+  dateFormat: "ymd" | "dmy" | "mdy";
+}
+
+const defaultSettings: Preferences = {
+  advanceOrderMode: false,
+  hideKycUntil: AbsoluteTime.never(),
+  hideMissingAccountUntil: AbsoluteTime.never(),
+  dateFormat: "ymd",
+};
+
+export const codecForPreferences = (): Codec<Preferences> =>
+  buildCodecForObject<Preferences>()
+    .property("advanceOrderMode", codecForBoolean())
+    .property("hideKycUntil", codecForAbsoluteTime)
+    .property("hideMissingAccountUntil", codecForAbsoluteTime)
+    .property(
+      "dateFormat",
+      codecForEither(
+        codecForConstString("ymd"),
+        codecForConstString("dmy"),
+        codecForConstString("mdy"),
+      ),
+    )
+    .build("Preferences");
+
+const PREFERENCES_KEY = buildStorageKey(
+  "merchant-preferences",
+  codecForPreferences(),
+);
+
+export function usePreference(): [
+  Readonly<Preferences>,
+  <T extends keyof Preferences>(key: T, value: Preferences[T]) => void,
+  (s: Preferences) => void,
+] {
+  const { value, update } = useLocalStorage(PREFERENCES_KEY, defaultSettings);
+  function updateField<T extends keyof Preferences>(k: T, v: Preferences[T]) {
+    const newValue = { ...value, [k]: v };
+    update(newValue);
+  }
+
+  return [value, updateField, update];
+}
+
+export function dateFormatForSettings(s: Preferences): string {
+  switch (s.dateFormat) {
+    case "ymd":
+      return "yyyy/MM/dd";
+    case "dmy":
+      return "dd/MM/yyyy";
+    case "mdy":
+      return "MM/dd/yyyy";
+  }
+}
+
+export function datetimeFormatForSettings(s: Preferences): string {
+  return dateFormatForSettings(s) + " HH:mm:ss";
+}