77 lines
2.5 KiB
JavaScript
77 lines
2.5 KiB
JavaScript
class DateRange {
|
|
|
|
static addRange(new_range, ranges){
|
|
var gaps_filled = [], new_ranges = [],
|
|
start = new_range[0], end = new_range[1];
|
|
if (start === undefined && end === undefined && ranges.length === 0){
|
|
gaps_filled = [undefined, undefined];
|
|
new_ranges = [[undefined, undefined]];
|
|
} else {
|
|
var covered = false,
|
|
last_start = start,
|
|
last_end = start;
|
|
|
|
ranges.forEach((range, i)=>{
|
|
if (covered){ new_ranges.push(range); return true; }
|
|
if (DateRange.lte(start, range[0])){
|
|
if (end && !DateRange.eq(end, range[0]) && DateRange.lte(end, range[0])){
|
|
new_ranges.push([last_start, end]);
|
|
new_ranges.push(range);
|
|
if (!DateRange.eq(end, last_end)){
|
|
gaps_filled.push([last_end, end]);
|
|
}
|
|
covered = true;
|
|
} else if (end && !DateRange.gte(end, range[1])) {
|
|
new_ranges.push([last_start, range[1]]);
|
|
if (range[0] && !DateRange.eq(last_end, range[0])){ gaps_filled.push([last_end, range[0]]); }
|
|
covered = true
|
|
} else {
|
|
if (range[0] && !DateRange.eq(last_end, range[0])) gaps_filled.push([last_end, range[0]]);
|
|
last_end = range[1]
|
|
}
|
|
} else if (start && DateRange.gte(range[1], start)){
|
|
if (!DateRange.eq(end, range[1]) && DateRange.gte(end, range[1])){
|
|
last_start = range[0];
|
|
last_end = range[1];
|
|
} else {
|
|
new_ranges.push(range);
|
|
covered = true;
|
|
}
|
|
} else { new_ranges.push(range); }
|
|
});
|
|
if (!covered) {
|
|
new_ranges.push([last_start, end]);
|
|
if (!DateRange.eq(last_end, end)) gaps_filled.push([last_end, end]);
|
|
}
|
|
}
|
|
|
|
return { gaps_filled: gaps_filled, new_ranges: new_ranges }
|
|
}
|
|
|
|
static gte(date1, date2){
|
|
return (date1 === undefined || (date2 !== undefined && date1 >= date2));
|
|
}
|
|
|
|
static lte(date1, date2){
|
|
return (date1 === undefined || (date2 !== undefined && date1 <= date2));
|
|
}
|
|
|
|
static eq(date1, date2){
|
|
if (date1 && date1.constructor === Date) date1 = date1.getTime();
|
|
if (date2 && date2.constructor === Date) date2 = date2.getTime();
|
|
return (date1 !== undefined && date2 !== undefined && date1 === date2) || date1 === undefined && date2 === undefined
|
|
}
|
|
|
|
static add(date, s){
|
|
return new Date(date.getTime() + s);
|
|
}
|
|
|
|
static inRange(n, min_max){
|
|
var min = min_max[0],
|
|
max = min_max[1];
|
|
return ((n >= min) && (n <= max));
|
|
}
|
|
|
|
}
|
|
export default DateRange;
|