an qua la ngu

src/common/utils/datetime.utils.ts

@@ -0,0 +1,69 @@
+function getOverlapRange(
+  startA: number,
+  endA: number,
+  startB: number,
+  endB: number
+) {
+  const overlapStart = Math.max(startA, startB);
+  const overlapEnd = Math.min(endA, endB);
+
+  return overlapStart < overlapEnd ? { overlapStart, overlapEnd } : null;
+}
+
+function isOverlap(
+  startA: number,
+  endA: number,
+  startB: number,
+  endB: number
+) {
+  return getOverlapRange(startA, endA, startB, endB) !== null;
+}
+
+// Generate random time ranges for the schedulers
+function generateTimeRanges(count: number): { start: number; end: number }[] {
+  const ranges = [];
+  const startDate = new Date('2024-10-06T00:00:00Z').getTime();
+  for (let i = 0; i < count; i++) {
+    const start = startDate + Math.floor(Math.random() * 10000000); // Random start time
+    const end = start + Math.floor(Math.random() * 10000000); // Random end time after start
+    ranges.push({ start, end });
+  }
+  return ranges;
+}
+
+// Benchmark performance of overlap detection between two schedulers
+const schedulerA = generateTimeRanges(50);
+const schedulerB = generateTimeRanges(50);
+
+console.time('Overlap Benchmark');
+let overlapCount = 0;
+for (const rangeA of schedulerA) {
+  for (const rangeB of schedulerB) {
+    if (isOverlap(rangeA.start, rangeA.end, rangeB.start, rangeB.end)) {
+      overlapCount++;
+    }
+  }
+}
+console.timeEnd('Overlap Benchmark');
+
+console.log(`Total Overlaps Found: ${overlapCount}`);
+
+// Example usage with specific time ranges
+const startA = new Date('2024-10-06T10:00:00Z').getTime();
+const endA = new Date('2024-10-06T12:00:00Z').getTime();
+const startB = new Date('2024-10-06T11:00:00Z').getTime();
+const endB = new Date('2024-10-06T13:00:00Z').getTime();
+
+const overlapRange = getOverlapRange(startA, endA, startB, endB);
+if (overlapRange) {
+  console.log(
+    `Overlap Start: ${new Date(overlapRange.overlapStart).toISOString()}`
+  );
+  console.log(
+    `Overlap End: ${new Date(overlapRange.overlapEnd).toISOString()}`
+  );
+  
+  console.log('Is overlap: true');
+} else {
+  console.log('No overlap');
+}