chore: initial commit for phase07

2026-02-22 00:25:39 +03:00
parent 5709d8bc10
commit 124e4f8921
16 changed files with 1973 additions and 23 deletions
@@ -0,0 +1,103 @@
+/**
+ * Compute the next run time for a scheduled task.
+ */
+export function computeNextRun(
+  scheduleType: string,
+  scheduleData: Record<string, unknown>,
+): Date {
+  const now = new Date();
+
+  switch (scheduleType) {
+    case 'interval': {
+      const minutes = Number(scheduleData.minutes) || 60;
+      return new Date(now.getTime() + minutes * 60_000);
+    }
+
+    case 'daily': {
+      const hour = Number(scheduleData.hour ?? 0);
+      const minute = Number(scheduleData.minute ?? 0);
+      const next = new Date(now);
+      next.setHours(hour, minute, 0, 0);
+      if (next <= now) next.setDate(next.getDate() + 1);
+      return next;
+    }
+
+    case 'weekly': {
+      const dayOfWeek = Number(scheduleData.dayOfWeek ?? 0); // 0=Sunday
+      const hour = Number(scheduleData.hour ?? 0);
+      const minute = Number(scheduleData.minute ?? 0);
+      const next = new Date(now);
+      next.setHours(hour, minute, 0, 0);
+      const currentDay = next.getDay();
+      let daysAhead = dayOfWeek - currentDay;
+      if (daysAhead < 0 || (daysAhead === 0 && next <= now)) {
+        daysAhead += 7;
+      }
+      next.setDate(next.getDate() + daysAhead);
+      return next;
+    }
+
+    case 'cron': {
+      // Simple cron parser for: minute hour dayOfMonth month dayOfWeek
+      const expression = String(scheduleData.expression || '0 * * * *');
+      return parseCronNextRun(expression, now);
+    }
+
+    default:
+      return new Date(now.getTime() + 3600_000); // fallback: 1 hour
+  }
+}
+
+function parseCronNextRun(expression: string, from: Date): Date {
+  const parts = expression.trim().split(/\s+/);
+  const cronMinute = parts[0] ?? '*';
+  const cronHour = parts[1] ?? '*';
+  const cronDom = parts[2] ?? '*';
+  const cronMonth = parts[3] ?? '*';
+  const cronDow = parts[4] ?? '*';
+
+  // Brute force: check next 1440 minutes (24 hours)
+  const candidate = new Date(from);
+  candidate.setSeconds(0, 0);
+  candidate.setMinutes(candidate.getMinutes() + 1);
+
+  for (let i = 0; i < 1440 * 31; i++) {
+    if (
+      matchesCronField(cronMinute, candidate.getMinutes()) &&
+      matchesCronField(cronHour, candidate.getHours()) &&
+      matchesCronField(cronDom, candidate.getDate()) &&
+      matchesCronField(cronMonth, candidate.getMonth() + 1) &&
+      matchesCronField(cronDow, candidate.getDay())
+    ) {
+      return candidate;
+    }
+    candidate.setMinutes(candidate.getMinutes() + 1);
+  }
+
+  // Fallback if no match found
+  return new Date(from.getTime() + 3600_000);
+}
+
+function matchesCronField(field: string, value: number): boolean {
+  if (field === '*') return true;
+
+  // Handle step values: */5
+  if (field.startsWith('*/')) {
+    const step = parseInt(field.slice(2), 10);
+    return step > 0 && value % step === 0;
+  }
+
+  // Handle ranges: 1-5
+  if (field.includes('-')) {
+    const [min, max] = field.split('-').map(Number);
+    return min !== undefined && max !== undefined && value >= min && value <= max;
+  }
+
+  // Handle lists: 1,3,5
+  if (field.includes(',')) {
+    return field.split(',').map(Number).includes(value);
+  }
+
+  // Exact match
+  return parseInt(field, 10) === value;
+}