localization for ntfy and mail

src/runtimeSettings.ts

@@ -12,6 +12,8 @@ import {
 export interface RuntimeSettings {
   paperlessBaseUrl: string | null;
   paperlessExternalUrl: string | null;
+  appExternalUrl: string | null;
+  appLocale: string;
   paperlessToken: string | null;
   schedulerIntervalMinutes: number;
   alertDaysBefore: number;
@@ -65,6 +67,19 @@ function coerceString(value: unknown, fallback: string | null): string | null {
   return fallback;
 }
 
+function normalizeLocale(value: unknown, fallback: string): string {
+  if (typeof value === "string") {
+    const lower = value.toLowerCase();
+    if (lower.startsWith("de")) {
+      return "de";
+    }
+    if (lower.startsWith("en")) {
+      return "en";
+    }
+  }
+  return fallback;
+}
+
 export function getRuntimeSettings(): RuntimeSettings {
   const stored = listSettings();
 
@@ -78,6 +93,8 @@ export function getRuntimeSettings(): RuntimeSettings {
   return {
     paperlessBaseUrl: coerceString(stored.paperlessBaseUrl, config.paperlessBaseUrl ?? null),
     paperlessExternalUrl: coerceString(stored.paperlessExternalUrl, config.paperlessExternalUrl ?? null),
+    appExternalUrl: coerceString(stored.appExternalUrl, config.appExternalUrl ?? null),
+    appLocale: normalizeLocale(stored.appLocale, config.appLocale),
     paperlessToken: coerceString(stored.paperlessToken, config.paperlessToken ?? null),
     schedulerIntervalMinutes,
     alertDaysBefore,
@@ -104,12 +121,16 @@ export function getRuntimeSettings(): RuntimeSettings {
 export function updateRuntimeSettings(update: Partial<RuntimeSettings>): RuntimeSettings {
   const keys = Object.keys(update) as SettingKey[];
   for (const key of keys) {
-    const value = update[key as keyof RuntimeSettings];
+    let value = update[key as keyof RuntimeSettings];
     if (value === undefined || value === null || value === "") {
       removeSetting(key);
       continue;
     }
 
+    if (key === "appLocale") {
+      value = normalizeLocale(value, config.appLocale);
+    }
+
     if (numericKeys.has(key)) {
       const numericValue = coerceNumber(value, 0);
       setSetting(key, numericValue);