chore: import upstream snapshot with attribution

apps/sim/lib/core/utils/scheduling.ts

@@ -0,0 +1,51 @@
+/**
+ * Converts schedule options to a cron expression
+ */
+export function convertScheduleOptionsToCron(
+  scheduleType: string,
+  options: Record<string, string>
+): string {
+  switch (scheduleType) {
+    case 'minutes': {
+      const interval = options.minutesInterval || '15'
+      // For example, if options.minutesStartingAt is provided, use that as the start minute.
+      return `*/${interval} * * * *`
+    }
+    case 'hourly': {
+      // When scheduling hourly, take the specified minute offset
+      return `${options.hourlyMinute || '00'} * * * *`
+    }
+    case 'daily': {
+      // Expected dailyTime in HH:MM
+      const [minute, hour] = (options.dailyTime || '00:09').split(':')
+      return `${minute || '00'} ${hour || '09'} * * *`
+    }
+    case 'weekly': {
+      // Expected weeklyDay as MON, TUE, etc. and weeklyDayTime in HH:MM
+      const dayMap: Record<string, number> = {
+        MON: 1,
+        TUE: 2,
+        WED: 3,
+        THU: 4,
+        FRI: 5,
+        SAT: 6,
+        SUN: 0,
+      }
+      const day = dayMap[options.weeklyDay || 'MON']
+      const [minute, hour] = (options.weeklyDayTime || '00:09').split(':')
+      return `${minute || '00'} ${hour || '09'} * * ${day}`
+    }
+    case 'monthly': {
+      // Expected monthlyDay and monthlyTime in HH:MM
+      const day = options.monthlyDay || '1'
+      const [minute, hour] = (options.monthlyTime || '00:09').split(':')
+      return `${minute || '00'} ${hour || '09'} ${day} * *`
+    }
+    case 'custom': {
+      // Use the provided cron expression directly
+      return options.cronExpression
+    }
+    default:
+      throw new Error('Unsupported schedule type')
+  }
+}