feat: add employee timing system, notification templates, and professor class plan sms

utils/jalaliDate.js

@@ -100,6 +100,38 @@ const parseImportDate = (raw) => {
   return Number.isNaN(date.getTime()) ? null : date;
 };
 
+const gregorianToJalali = (gy, gm, gd) => {
+  const g_d_m = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
+  let jy;
+  if (gy > 1600) {
+    jy = 979;
+    gy -= 1600;
+  } else {
+    jy = 0;
+    gy -= 621;
+  }
+  const gy2 = gm > 2 ? gy + 1 : gy;
+  let days = 365 * gy + Math.floor((gy2 + 3) / 4) - Math.floor((gy2 + 99) / 100) + Math.floor((gy2 + 399) / 400) - 80 + gd + g_d_m[gm - 1];
+  jy += 33 * Math.floor(days / 12053);
+  days %= 12053;
+  jy += 4 * Math.floor(days / 1461);
+  days %= 1461;
+  if (days > 365) {
+    jy += Math.floor((days - 1) / 365);
+    days = (days - 1) % 365;
+  }
+  const jm = days < 186 ? 1 + Math.floor(days / 31) : 7 + Math.floor((days - 186) / 30);
+  const jd = 1 + (days < 186 ? days % 31 : (days - 186) % 30);
+  return `${jy}/${String(jm).padStart(2, '0')}/${String(jd).padStart(2, '0')}`;
+};
+
+const formatJalaliDate = (rawDate) => {
+  if (!rawDate) return '';
+  const date = rawDate instanceof Date ? rawDate : new Date(rawDate);
+  if (Number.isNaN(date.getTime())) return '';
+  return gregorianToJalali(date.getUTCFullYear(), date.getUTCMonth() + 1, date.getUTCDate());
+};
+
 const utcDayRange = (value) => {
   const date = parseImportDate(value);
   if (!date) return null;
@@ -111,6 +143,8 @@ const utcDayRange = (value) => {
 module.exports = {
   toEnglishDigits,
   jalaliToGregorian,
+  gregorianToJalali,
+  formatJalaliDate,
   parseJalaliDate,
   parseImportDate,
   utcDayRange