1 files changed, 73 insertions, 0 deletions
diff --git a/packages/auditor-backoffice-ui/src/hooks/useSettings.ts b/packages/auditor-backoffice-ui/src/hooks/useSettings.ts
new file mode 100644
index 000000000..8c1ebd9f6
--- /dev/null
+++ b/packages/auditor-backoffice-ui/src/hooks/useSettings.ts
@@ -0,0 +1,73 @@
+/*
+ This file is part of GNU Taler
+ (C) 2022 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 { buildStorageKey, useLocalStorage } from "@gnu-taler/web-util/browser";
+import {
+  Codec,
+  buildCodecForObject,
+  codecForBoolean,
+  codecForConstString,
+  codecForEither,
+  codecForString,
+} from "@gnu-taler/taler-util";
+
+export interface Settings {
+  advanceOrderMode: boolean;
+  dateFormat: "ymd" | "dmy" | "mdy";
+}
+
+const defaultSettings: Settings = {
+  advanceOrderMode: false,
+  dateFormat: "ymd",
+}
+
+export const codecForSettings = (): Codec<Settings> =>
+  buildCodecForObject<Settings>()
+    .property("advanceOrderMode", codecForBoolean())
+    .property("dateFormat", codecForEither(
+      codecForConstString("ymd"),
+      codecForConstString("dmy"),
+      codecForConstString("mdy"),
+    ))
+    .build("Settings");
+
+const SETTINGS_KEY = buildStorageKey("merchant-settings", codecForSettings());
+
+export function useSettings(): [
+  Readonly<Settings>,
+  (s: Settings) => void,
+] {
+  const { value, update } = useLocalStorage(SETTINGS_KEY, defaultSettings);
+
+  // const parsed: Settings = value ?? defaultSettings;
+  // function updateField<T extends keyof Settings>(k: T, v: Settings[T]) {
+  //   const next = { ...parsed, [k]: v }
+  //   update(next);
+  // }
+  return [value, update];
+}
+
+export function dateFormatForSettings(s: Settings): 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: Settings): string {
+  return dateFormatForSettings(s) + " HH:mm:ss"
+}
+\ No newline at end of file