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| import dayjs from 'dayjs'; | |
| import minMax from 'dayjs/plugin/minMax.js' | |
| dayjs.extend(minMax); | |
| function findDifference(list1, list2) { | |
| const result = {}; | |
| // Loop through each range in list1 | |
| while (list1.length > 0) { | |
| const range1 = list1.pop() | |
| const r1 = range1.map(r => dayjs(r)); | |
| const [start1, end1] = r1; | |
| // Check for overlaps or complete containment in list2 | |
| let foundOverlap = false; | |
| let splitted = false; | |
| for (const range2 of list2) { | |
| const [start2, end2] = range2.map(r => dayjs(r)); | |
| // Check if range1 completely contains range2 | |
| if (start1 < start2 && end1 > end2) { | |
| splitted = true | |
| // Add non-overlapping part before range2 | |
| if (start1 < start2) { | |
| list1.push([start1, start2]); | |
| } | |
| // Add non-overlapping part after range2 | |
| if (end1 > end2) { | |
| list1.push([end2, end1]); | |
| } | |
| continue; // No need to check further overlaps for a splitted range1 | |
| } | |
| // Check if there's an overlap | |
| if (start1 < end2 && end1 > start2) { | |
| foundOverlap = true; | |
| // Add non-overlapping parts of range1 | |
| if (start1 < start2) { | |
| list1.push([start1, dayjs.min(end1, start2)]); | |
| } | |
| if (end1 > end2) { | |
| list1.push([dayjs.min(start1, end2), end1]); | |
| } | |
| continue; // No need to check further overlaps for this range1 | |
| } | |
| } | |
| // If no overlap or splits found in list2, add the entire range1 to result | |
| if (!foundOverlap && !splitted) { | |
| result[r1.map(r => r.toISOString())] = true; | |
| } | |
| } | |
| // return result | |
| // console.log(Object.keys(result)) | |
| return Object.keys(result).map(r => r.split(','))//.map(e => dayjs(e))) | |
| } | |
| // Example usage | |
| const list1 = [['2024-06-20', '2024-06-25'], ['2024-06-30', '2024-07-05']]; | |
| const list2 = [['2024-06-22', '2024-06-23'], ['2024-06-23', '2024-06-25'], ['2024-07-02', '2024-07-08']]; | |
| const difference = findDifference(list1, list2); | |
| console.log(difference); | |
| // output [ | |
| // [ '2024-06-30T05:00:00.000Z', '2024-07-02T05:00:00.000Z' ], | |
| // [ '2024-06-20T05:00:00.000Z', '2024-06-22T05:00:00.000Z' ] | |
| // ] |
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