Implement custom header formatting (v1.33.0)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.32.0",
+  "version": "1.33.0",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {

src/components/WeeklyView.tsx

@@ -263,6 +263,8 @@ const translations: Record<string, any> = {
         headerDisplayMonth: "Month Name",
         headerDisplayMonthYear: "Month & Year",
         headerDisplayDate: "Full Date",
+        headerDisplayCustom: "Custom",
+        headerCustomFormatLabel: "Format string (e.g. DD.MM.YYYY)",
         language: "Language",
         dateFormat: "Date Format",
         timeFormat: "Time Format",
@@ -471,6 +473,8 @@ const translations: Record<string, any> = {
         headerDisplayMonth: "Monatsname",
         headerDisplayMonthYear: "Monat & Jahr",
         headerDisplayDate: "Vollständiges Datum",
+        headerDisplayCustom: "Benutzerdefiniert",
+        headerCustomFormatLabel: "Format (z.B. DD.MM.YYYY)",
         listView: "Liste",
         notes: "Notizen",
         notesSidebar: "Notizen-Seitenleiste",
@@ -682,6 +686,8 @@ const translations: Record<string, any> = {
         headerDisplayMonth: "Nom du mois",
         headerDisplayMonthYear: "Mois & Année",
         headerDisplayDate: "Date complète",
+        headerDisplayCustom: "Personnalisé",
+        headerCustomFormatLabel: "Format (ex: DD.MM.YYYY)",
         language: "Langue",
         dateFormat: "Format de date",
         timeFormat: "Format d'heure",
@@ -891,6 +897,8 @@ const translations: Record<string, any> = {
         headerDisplayMonth: "Nombre del mes",
         headerDisplayMonthYear: "Mes y Año",
         headerDisplayDate: "Fecha completa",
+        headerDisplayCustom: "Personalizado",
+        headerCustomFormatLabel: "Formato (ej. DD.MM.YYYY)",
         language: "Idioma",
         dateFormat: "Formato de fecha",
         timeFormat: "Formato de hora",
@@ -1100,6 +1108,8 @@ const translations: Record<string, any> = {
         headerDisplayMonth: "Nome del mese",
         headerDisplayMonthYear: "Mese e Anno",
         headerDisplayDate: "Data completa",
+        headerDisplayCustom: "Personalizzato",
+        headerCustomFormatLabel: "Formato (es. DD.MM.YYYY)",
         language: "Lingua",
         dateFormat: "Formato data",
         timeFormat: "Formato ora",
@@ -1424,6 +1434,37 @@ function getCWReferenceDate(days: Date[]): Date {
     return new Date(first.getTime() - distToMonday * 86400000);
 }
 
+// Format a custom header string using tokens
+function formatCustomHeader(format: string, days: Date[], language: string, t: any): string {
+    if (!format) return "";
+    const refDate = getCWReferenceDate(days);
+    const today = new Date();
+    
+    let result = format;
+    
+    // [TODAY] token
+    result = result.replace(/\[TODAY\]/g, today.toLocaleDateString(language, { day: '2-digit', month: '2-digit', year: 'numeric' }));
+    
+    // YYYY
+    result = result.replace(/YYYY/g, refDate.getFullYear().toString());
+    
+    // WW (ISO Week)
+    result = result.replace(/WW/g, getWeekNumber(refDate).toString().padStart(2, '0'));
+    result = result.replace(/W/g, getWeekNumber(refDate).toString());
+    
+    // MMMM (Month Name Long)
+    result = result.replace(/MMMM/g, refDate.toLocaleDateString(language, { month: 'long' }));
+    result = result.replace(/MMM/g, refDate.toLocaleDateString(language, { month: 'short' }));
+    result = result.replace(/MM/g, (refDate.getMonth() + 1).toString().padStart(2, '0'));
+    result = result.replace(/M/g, (refDate.getMonth() + 1).toString());
+    
+    // DD (Day)
+    result = result.replace(/DD/g, refDate.getDate().toString().padStart(2, '0'));
+    result = result.replace(/D/g, refDate.getDate().toString());
+    
+    return result;
+}
+
 // Check if an event is an all-day event
 // Defined outside component to avoid stale closure issues in useCallbacks
 const isAllDayEvent = (event: CalendarEvent): boolean => {
@@ -1803,7 +1844,8 @@ export default function WeeklyView() {
         weekdayCase?: "normal" | "capitalize" | "uppercase";
         customWeekdayNames?: string;
         dateVerticalAlign?: "top" | "middle" | "bottom";
-        headerDisplay?: "kw" | "month" | "month_year" | "date";
+        headerDisplay?: "kw" | "month" | "month_year" | "date" | "custom";
+        headerCustomFormat?: string;
         lightTheme?: any;
         darkTheme?: any;
     }>({
@@ -5474,6 +5516,8 @@ export default function WeeklyView() {
                                 <span>{getCWReferenceDate(getVisibleDays()).toLocaleDateString(language, { day: '2-digit', month: '2-digit', year: 'numeric' })}</span>
                             ) : profile.headerDisplay === "month_year" ? (
                                 <span>{getCWReferenceDate(getVisibleDays()).toLocaleDateString(language, { month: 'long', year: 'numeric' })}</span>
+                            ) : profile.headerDisplay === "custom" ? (
+                                <span>{formatCustomHeader(profile.headerCustomFormat || "KW WW | YYYY", getVisibleDays(), language, t)}</span>
                             ) : (
                                 <>
                                     <span>KW{getWeekNumber(getCWReferenceDate(getVisibleDays())).toString().padStart(2, "0")}</span>
@@ -5731,6 +5775,8 @@ export default function WeeklyView() {
                                         ? getCWReferenceDate(getVisibleDays()).toLocaleDateString(language, { month: "long", year: "numeric" })
                                         : profile.headerDisplay === "date"
                                             ? getCWReferenceDate(getVisibleDays()).toLocaleDateString(language, { day: '2-digit', month: '2-digit', year: 'numeric' })
+                                            : profile.headerDisplay === "custom"
+                                                ? formatCustomHeader(profile.headerCustomFormat || "KW WW | YYYY", getVisibleDays(), language, t)
                                                 : `KW ${getWeekNumber(getCWReferenceDate(getVisibleDays())).toString().padStart(2, "0")}`
                                 }
                             </span>
@@ -9694,7 +9740,8 @@ function SettingsSidebar({
         weekdayCase?: "normal" | "capitalize" | "uppercase";
         customWeekdayNames?: string;
         dateVerticalAlign?: "top" | "middle" | "bottom";
-        headerDisplay?: "kw" | "month" | "month_year" | "date";
+        headerDisplay?: "kw" | "month" | "month_year" | "date" | "custom";
+        headerCustomFormat?: string;
     }>({
         name: "",
         email: "",
@@ -9709,6 +9756,7 @@ function SettingsSidebar({
         focusTimerDuration: 25,
         focusBreakDuration: 5,
         headerDisplay: "kw",
+        headerCustomFormat: "KW WW | YYYY",
         cellDuration: 30,
         viewStyle: "list",
         fontSize: "M",
@@ -10852,7 +10900,37 @@ function SettingsSidebar({
                                     >
                                         {t.headerDisplayDate}
                                     </button>
+                                    <button
+                                        onClick={() => {
+                                            setProfile({ ...profile, headerDisplay: "custom" });
+                                            saveSetting("headerDisplay", "custom");
+                                        }}
+                                        className={`px-4 py-2 text-sm rounded transition-colors ${profile.headerDisplay === "custom" ? "bg-white shadow-sm font-bold text-black" : "text-gray-500 hover:text-gray-900 hover:bg-gray-200 dark:hover:bg-gray-700"}`}
+                                    >
+                                        {t.headerDisplayCustom}
+                                    </button>
                                 </div>
+                                {profile.headerDisplay === "custom" && (
+                                    <div className="mt-2">
+                                        <label style={{ fontSize: "0.75rem", color: "var(--weekly-settings-label)", display: "block", marginBottom: "4px" }}>
+                                            {t.headerCustomFormatLabel}
+                                        </label>
+                                        <input
+                                            type="text"
+                                            value={profile.headerCustomFormat || ""}
+                                            onChange={(e) => {
+                                                const val = e.target.value;
+                                                setProfile({ ...profile, headerCustomFormat: val });
+                                                saveSetting("headerCustomFormat", val);
+                                            }}
+                                            placeholder="KW WW | YYYY or DD.MM.YYYY"
+                                            className="w-full px-3 py-1.5 text-sm rounded border border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-white"
+                                        />
+                                        <div className="mt-1 text-[10px] text-gray-500 leading-tight">
+                                            Tokens: WW (Week), YYYY (Year), MMMM (Month Name), MM (Month Num), DD (Day), [TODAY] (Active Date)
+                                        </div>
+                                    </div>
+                                )}
                             </div>
 
                             {/* Kanban Stages Settings */}