dates utils used

apps/Frontend/src/utils/dateUtils.ts

@@ -2,39 +2,47 @@
  * Parse a date string in yyyy-MM-dd format (assumed local) into a JS Date object.
  * No timezone conversion is applied. Returns a Date at midnight local time.
  */
-export function parseLocalDateString(dateStr: string): Date {
-  const parts = dateStr.split("-");
 
-  // Destructure with fallback
-  const [yearStr, monthStr, dayStr] = parts;
-
-  // Validate all parts are defined and valid strings
-  if (!yearStr || !monthStr || !dayStr) {
-    throw new Error("Invalid date string format. Expected yyyy-MM-dd.");
+export function parseLocalDate(input: string | Date): Date {
+  if (input instanceof Date) {
+    return new Date(input.getFullYear(), input.getMonth(), input.getDate());
   }
 
-  const year = parseInt(yearStr, 10);
-  const month = parseInt(monthStr, 10) - 1; // JS Date months are 0-based
-  const day = parseInt(dayStr, 10);
+  if (typeof input === "string") {
+    const dateString = input?.split("T")[0] ?? "";
+    const parts = dateString.split("-");
 
-  if (Number.isNaN(year) || Number.isNaN(month) || Number.isNaN(day)) {
-    throw new Error("Invalid numeric values in date string.");
+    const [yearStr, monthStr, dayStr] = parts;
+
+    // Validate all parts are defined and valid strings
+    if (!yearStr || !monthStr || !dayStr) {
+      throw new Error("Invalid date string format. Expected yyyy-MM-dd.");
+    }
+
+    const year = parseInt(yearStr, 10);
+    const month = parseInt(monthStr, 10) - 1; // JS Date months are 0-based
+    const day = parseInt(dayStr, 10);
+
+    if (Number.isNaN(year) || Number.isNaN(month) || Number.isNaN(day)) {
+      throw new Error("Invalid numeric values in date string.");
+    }
+
+    return new Date(year, month, day);
   }
-
-  return new Date(year, month, day);
+  throw new Error(
+    "Unsupported input to parseLocalDate. Expected string or Date."
+  );
 }
 
-
-
 /**
  * Format a JS Date object as a `yyyy-MM-dd` string (in local time).
  * Useful for saving date-only data without time component.
  */
 export function formatLocalDate(date: Date): string {
-  const year = date.getFullYear();             // ← local time
+  const year = date.getFullYear(); // ← local time
   const month = `${date.getMonth() + 1}`.padStart(2, "0");
   const day = `${date.getDate()}`.padStart(2, "0");
-  return `${year}-${month}-${day}`;           // e.g. "2025-07-15"
+  return `${year}-${month}-${day}`; // e.g. "2025-07-15"
 }
 
 /**
@@ -42,7 +50,9 @@ export function formatLocalDate(date: Date): string {
  * Useful for comparing or storing dates consistently across timezones.
  */
 export function toUTCDate(date: Date): Date {
-  return new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
+  return new Date(
+    Date.UTC(date.getFullYear(), date.getMonth(), date.getDate())
+  );
 }
 
 /**
@@ -50,23 +60,15 @@ export function toUTCDate(date: Date): Date {
  * and formats it as local yyyy-MM-dd string for UI use.
  */
 export function formatUTCDateStringToLocal(dateStr: string): string {
-  const date = new Date(dateStr); // still UTC
-
-  // Create a local Date object with same year, month, day from UTC
-  const localDate = new Date(
-    date.getUTCFullYear(),
-    date.getUTCMonth(),
-    date.getUTCDate()
-  );
-
-  return formatLocalDate(localDate); // now safely in local time
+  const localDate = parseLocalDate(dateStr); // will strip the time part
+  return formatLocalDate(localDate); // e.g., "2025-07-15"
 }
 
-
 /**
  * Ensure any date (Date|string) is formatted to ISO string for consistent backend storage.
  * If it's already a string, pass through. If it's a Date, convert to ISO.
  */
 export function normalizeToISOString(date: Date | string): string {
-  return date instanceof Date ? date.toISOString() : date;
+  const parsed = parseLocalDate(date);
+  return parsed.toISOString(); // ensures it always starts from local midnight
 }