feat(check-all-eligibility) - v3

apps/Backend/src/utils/dateUtils.ts

@@ -24,3 +24,38 @@ export function convertOCRDate(input: string | number | null | undefined): Date
 
   return new Date(year, month, day);
 }
+
+/**
+ * Normalize a DOB value to "YYYY-MM-DD" string expected by the Python agent.
+ * - If dob is already "YYYY-MM-DD" string, returns it.
+ * - If dob is an ISO datetime string or Date, returns YYYY-MM-DD derived from UTC parts (no timezone shifts).
+ * - Returns null for invalid values.
+ */
+export function formatDobForAgent(dob: Date | string | null | undefined): string | null {
+  if (!dob) return null;
+
+  // If it's a string in exact YYYY-MM-DD format, return as-is (most ideal).
+  if (typeof dob === "string") {
+    const simpleDateMatch = /^\d{4}-\d{2}-\d{2}$/.test(dob);
+    if (simpleDateMatch) return dob;
+
+    // Otherwise try parsing as a Date/ISO string and use UTC parts
+    const parsed = new Date(dob);
+    if (isNaN(parsed.getTime())) return null;
+    const y = parsed.getUTCFullYear();
+    const m = String(parsed.getUTCMonth() + 1).padStart(2, "0");
+    const d = String(parsed.getUTCDate()).padStart(2, "0");
+    return `${y}-${m}-${d}`;
+  }
+
+  // If it's a Date object, use UTC getters to avoid timezone shifts
+  if (dob instanceof Date) {
+    if (isNaN(dob.getTime())) return null;
+    const y = dob.getUTCFullYear();
+    const m = String(dob.getUTCMonth() + 1).padStart(2, "0");
+    const d = String(dob.getUTCDate()).padStart(2, "0");
+    return `${y}-${m}-${d}`;
+  }
+
+  return null;
+}