1 files changed, 30 insertions, 7 deletions
diff --git a/packages/merchant-backoffice-ui/src/hooks/useSettings.ts b/packages/merchant-backoffice-ui/src/hooks/useSettings.ts
index 5c0932f27..7dee9f896 100644
--- a/packages/merchant-backoffice-ui/src/hooks/useSettings.ts
+++ b/packages/merchant-backoffice-ui/src/hooks/useSettings.ts
@@ -19,6 +19,9 @@ import {
   Codec,
   buildCodecForObject,
   codecForBoolean,
+  codecForConstString,
+  codecForEither,
+  codecForString,
 } from "@gnu-taler/taler-util";
 
 function parse_json_or_undefined<T>(str: string | undefined): T | undefined {
@@ -31,29 +34,49 @@ function parse_json_or_undefined<T>(str: string | undefined): T | undefined {
 }
 
 export interface Settings {
-  advanceOrderMode: boolean
+  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>,
-  <T extends keyof Settings>(key: T, value: Settings[T]) => void,
+  (s: Settings) => void,
 ] {
-  const { value, update } = useLocalStorage(SETTINGS_KEY);
+  const { value, update } = useLocalStorage(SETTINGS_KEY, defaultSettings);
 
-  const parsed: Settings = value ?? defaultSettings;
-  function updateField<T extends keyof Settings>(k: T, v: Settings[T]) {
-    update({ ...parsed, [k]: v });
+  // 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"
   }
-  return [parsed, updateField];
 }
+
+export function datetimeFormatForSettings(s: Settings): string {
+  return dateFormatForSettings(s) + " HH:mm:ss"
+}
+\ No newline at end of file