add billing

apps/admin.saladeaula.digital/app/routes/_.$orgid.billing._index/util.ts

@@ -0,0 +1,50 @@
+export function billingPeriod(billingDay: number, date: Date) {
+  // Determine the anchor month and year
+  let anchorMonth, anchorYear
+
+  if (date.getDate() >= billingDay) {
+    anchorMonth = date.getMonth() + 1 // JavaScript months are 0-11
+    anchorYear = date.getFullYear()
+  } else {
+    // Move to previous month
+    if (date.getMonth() === 0) {
+      // January
+      anchorMonth = 12
+      anchorYear = date.getFullYear() - 1
+    } else {
+      anchorMonth = date.getMonth() // No +1 because we're going backwards
+      anchorYear = date.getFullYear()
+    }
+  }
+
+  // Calculate start date
+  const lastDayOfMonth = new Date(anchorYear, anchorMonth, 0).getDate()
+  const startDay = Math.min(billingDay, lastDayOfMonth)
+  const startDate = new Date(anchorYear, anchorMonth - 1, startDay) // -1 because JS months are 0-based
+
+  // Calculate next month and year
+  let nextMonth, nextYear
+  if (anchorMonth === 12) {
+    nextMonth = 1
+    nextYear = anchorYear + 1
+  } else {
+    nextMonth = anchorMonth + 1
+    nextYear = anchorYear
+  }
+
+  // Calculate end date
+  const nextLastDayOfMonth = new Date(nextYear, nextMonth, 0).getDate()
+  const endDay = Math.min(billingDay, nextLastDayOfMonth)
+  const endDate = new Date(nextYear, nextMonth - 1, endDay)
+  endDate.setDate(endDate.getDate() - 1) // Subtract one day
+
+  return [startDate, endDate]
+}
+
+export function formatDate(date = new Date()) {
+  const year = date.getFullYear()
+  const month = String(date.getMonth() + 1).padStart(2, '0') // e.g: January = 01
+  const day = String(date.getDate()).padStart(2, '0')
+
+  return `${year}-${month}-${day}`
+}