feat: date logic

package-lock.json

@@ -10,7 +10,8 @@
       "dependencies": {
         "ask-sdk-core": "^2.14.0",
         "ask-sdk-model": "^1.86.0",
-        "kollavarsham": "^2.5.4"
+        "kollavarsham": "^2.5.4",
+        "luxon": "^3.7.2"
       },
       "devDependencies": {
         "ask-sdk-test": "^2.7.42",
@@ -1999,6 +2000,15 @@
         "get-func-name": "^2.0.1"
       }
     },
+    "node_modules/luxon": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/luxon/-/luxon-3.7.2.tgz",
+      "integrity": "sha512-vtEhXh/gNjI9Yg1u4jX/0YVPMvxzHuGgCm6tC5kZyb08yjGWGnqAjGJvcXbqQR2P3MyMEFnRbpcdFS6PBcLqew==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",

package.json

@@ -12,7 +12,8 @@
   "dependencies": {
     "ask-sdk-core": "^2.14.0",
     "ask-sdk-model": "^1.86.0",
-    "kollavarsham": "^2.5.4"
+    "kollavarsham": "^2.5.4",
+    "luxon": "^3.7.2"
   },
   "devDependencies": {
     "ask-sdk-test": "^2.7.42",

src/calendar.mjs

@@ -1,4 +1,5 @@
 import { Kollavarsham } from 'kollavarsham';
+import { DateTime } from 'luxon';
 
 const kollavarsham = new Kollavarsham({
   system: 'SuryaSiddhanta',
@@ -13,7 +14,7 @@ const kollavarsham = new Kollavarsham({
  * @returns {{ year: number, month: string, day: number, naksatra: string }}
  */
 export function getMalayalamDate(gregorianDate) {
-  const kollavarshamDate = kollavarsham.fromGregorianDate(gregorianDate);
+  const kollavarshamDate = kollavarsham.fromGregorianDate(toIndianStandardTime(gregorianDate));
 
   // Safely extract nakshatra name (handles string or object returns safely)
   const naksatraName = 
@@ -31,28 +32,20 @@ export function getMalayalamDate(gregorianDate) {
 
 
 /**
- * @returns {Date} - Current date and time in IST (Indian Standard Time) 
+ * Returns a standard JS Date object where the UTC year/month/day/time match 
+ * the corresponding local year/month/day/time in Indian Standard Time (IST).
+ * Useful for handing off to libraries like kollavarsham.
+ * 
+ * @param {Date} [date=new Date()] 
+ * @returns {Date}
  */
-export function getIstDate() {
-    // Construct date string formatted explicitly for India timezone
-    const now = new Date();
-    const formatter = new Intl.DateTimeFormat('en-US', {
-        timeZone: 'Asia/Kolkata',
-        year: 'numeric',
-        month: '2-digit',
-        day: '2-digit'
-    });
-    
-    // Formats into MM/DD/YYYY in IST
-    const [{ value: month }, , { value: day }, , { value: year }] = formatter.formatToParts(now);
-   
-    // Create UTC date anchored at 0:00:00 for that IST date
-    // Month is 0-indexed in JavaScript Date constructor, so subtract 1.
-    // Year and date don't need adjustment.
-    return new Date(Date.UTC(year, month - 1, day, 0, 0, 0));
+export function toIndianStandardTime(date = new Date()) {
+  const ist = DateTime.fromJSDate(date).setZone('Asia/Kolkata');
+  return new Date(Date.UTC(ist.year, ist.month - 1, ist.day, ist.hour, ist.minute, ist.second));
 }
 
 
+
 /**
  * Converts a number to its ordinal string representation (1st, 2nd, 3rd, 4th, etc.)
  * @param {number} day - The day number (1-31)

src/index.mjs

@@ -1,5 +1,5 @@
 import Alexa from 'ask-sdk-core';
-import { getMalayalamDate, getOrdinalDay, getIstDate } from './calendar.mjs';
+import { getMalayalamDate, getOrdinalDay } from './calendar.mjs';
 
 // 1. Core Logic: Handles explicit date/star question requests
 const GetMalayalamDateIntentHandler = {
@@ -76,7 +76,7 @@ const ErrorHandler = {
 
 // 3. Central Response Builder
 function generateCalendarResponse(handlerInput) {
-    const date = getMalayalamDate(getIstDate());
+    const date = getMalayalamDate(Date());
 
     // Property mappings for kollavarsham package:
     const dayNum = date.day; // Numeric date (e.g. 4)