352 lines
11 KiB
TypeScript
352 lines
11 KiB
TypeScript
import {Utils} from "../../Utils";
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export interface OpeningHour {
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weekday: number, // 0 is monday, 1 is tuesday, ...
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startHour: number,
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startMinutes: number,
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endHour: number,
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endMinutes: number
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}
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export class OH {
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private static readonly days = ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"]
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private static readonly daysIndexed = {
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mo: 0,
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tu: 1,
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we: 2,
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th: 3,
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fr: 4,
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sa: 5,
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su: 6
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}
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public static hhmm(h: number, m: number): string {
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if (h == 24) {
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return "00:00";
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}
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return Utils.TwoDigits(h) + ":" + Utils.TwoDigits(m);
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}
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public static ToString(ohs: OpeningHour[]) {
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if (ohs.length == 0) {
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return "";
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}
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const partsPerWeekday: string [][] = [[], [], [], [], [], [], []];
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for (const oh of ohs) {
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partsPerWeekday[oh.weekday].push(OH.hhmm(oh.startHour, oh.startMinutes) + "-" + OH.hhmm(oh.endHour, oh.endMinutes));
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}
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const stringPerWeekday = partsPerWeekday.map(parts => parts.sort().join(", "));
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const rules = [];
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let rangeStart = 0;
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let rangeEnd = 0;
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function pushRule(){
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const rule = stringPerWeekday[rangeStart];
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if(rule === ""){
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return;
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}
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if (rangeStart == (rangeEnd - 1)) {
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rules.push(
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`${OH.days[rangeStart]} ${rule}`
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);
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} else {
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rules.push(
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`${OH.days[rangeStart]}-${OH.days[rangeEnd-1]} ${rule}`
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);
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}
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}
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for (; rangeEnd < 7; rangeEnd++) {
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if (stringPerWeekday[rangeStart] != stringPerWeekday[rangeEnd]) {
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pushRule();
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rangeStart = rangeEnd
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}
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}
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pushRule();
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const oh = rules.join("; ")
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if (oh === "Mo-Su 00:00-00:00") {
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return "24/7"
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}
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return oh;
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}
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/**
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* Merge duplicate opening-hour element in place.
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* Returns true if something changed
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* @param ohs
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* @constructor
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*/
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public static MergeTimes(ohs: OpeningHour[]): OpeningHour[] {
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const queue = [...ohs];
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const newList = [];
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while (queue.length > 0) {
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let maybeAdd = queue.pop();
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let doAddEntry = true;
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if(maybeAdd.weekday == undefined){
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doAddEntry = false;
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}
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for (let i = newList.length - 1; i >= 0 && doAddEntry; i--) {
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let guard = newList[i];
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if (maybeAdd.weekday != guard.weekday) {
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// Not the same day
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continue
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}
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if (OH.startTimeLiesInRange(maybeAdd, guard) && OH.endTimeLiesInRange(maybeAdd, guard)) {
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// Guard fully covers 'maybeAdd': we can safely ignore maybeAdd
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doAddEntry = false;
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break;
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}
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if (OH.startTimeLiesInRange(guard, maybeAdd) && OH.endTimeLiesInRange(guard, maybeAdd)) {
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// 'maybeAdd' fully covers Guard - the guard is killed
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newList.splice(i, 1);
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break;
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}
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if (OH.startTimeLiesInRange(maybeAdd, guard) || OH.endTimeLiesInRange(maybeAdd, guard)
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|| OH.startTimeLiesInRange(guard, maybeAdd) || OH.endTimeLiesInRange(guard, maybeAdd)) {
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// At this point, the maybeAdd overlaps the guard: we should extend the guard and retest it
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newList.splice(i, 1);
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let startHour = guard.startHour;
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let startMinutes = guard.startMinutes;
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if (OH.startTime(maybeAdd) < OH.startTime(guard)) {
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startHour = maybeAdd.startHour;
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startMinutes = maybeAdd.startMinutes;
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}
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let endHour = guard.endHour;
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let endMinutes = guard.endMinutes;
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if (OH.endTime(maybeAdd) > OH.endTime(guard)) {
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endHour = maybeAdd.endHour;
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endMinutes = maybeAdd.endMinutes;
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}
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queue.push({
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startHour: startHour,
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startMinutes: startMinutes,
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endHour:endHour,
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endMinutes:endMinutes,
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weekday: guard.weekday
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});
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doAddEntry = false;
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break;
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}
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}
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if (doAddEntry) {
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newList.push(maybeAdd);
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}
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}
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// New list can only differ from the old list by merging entries
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// This means that the list is changed only if the lengths are different.
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// If the lengths are the same, we might just as well return the old list and be a bit more stable
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if (newList.length !== ohs.length) {
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return newList;
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} else {
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return ohs;
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}
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}
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public static startTime(oh: OpeningHour): number {
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return oh.startHour + oh.startMinutes / 60;
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}
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public static endTime(oh: OpeningHour): number {
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return oh.endHour + oh.endMinutes / 60;
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}
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public static startTimeLiesInRange(checked: OpeningHour, mightLieIn: OpeningHour) {
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return OH.startTime(mightLieIn) <= OH.startTime(checked) &&
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OH.startTime(checked) <= OH.endTime(mightLieIn)
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}
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public static endTimeLiesInRange(checked: OpeningHour, mightLieIn: OpeningHour) {
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return OH.startTime(mightLieIn) <= OH.endTime(checked) &&
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OH.endTime(checked) <= OH.endTime(mightLieIn)
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}
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private static parseHHMM(hhmm: string): { hours: number, minutes: number } {
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if(hhmm === undefined || hhmm == null){
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return null;
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}
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const spl = hhmm.trim().split(":");
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if(spl.length != 2){
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return null;
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}
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const hm = {hours: Number(spl[0].trim()), minutes: Number(spl[1].trim())};
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if(isNaN(hm.hours) || isNaN(hm.minutes) ){
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return null;
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}
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return hm;
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}
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public static parseHHMMRange(hhmmhhmm: string): {
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startHour: number,
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startMinutes: number,
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endHour: number,
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endMinutes: number
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} {
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if (hhmmhhmm == "off") {
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return null;
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}
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const timings = hhmmhhmm.split("-");
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const start = OH.parseHHMM(timings[0])
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const end = OH.parseHHMM(timings[1]);
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return {
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startHour: start.hours,
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startMinutes: start.minutes,
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endHour: end.hours,
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endMinutes: end.minutes
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}
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}
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private static ParseHhmmRanges(hhmms: string): {
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startHour: number,
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startMinutes: number,
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endHour: number,
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endMinutes: number
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}[] {
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if (hhmms === "off") {
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return [];
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}
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return hhmms.split(",")
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.map(s => s.trim())
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.filter(str => str !== "")
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.map(OH.parseHHMMRange)
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.filter(v => v != null)
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}
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private static ParseWeekday(weekday: string): number {
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return OH.daysIndexed[weekday.trim().toLowerCase()];
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}
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private static ParseWeekdayRange(weekdays: string): number[] {
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const split = weekdays.split("-");
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if (split.length == 1) {
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const parsed = OH.ParseWeekday(weekdays);
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if(parsed == null){
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return null;
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}
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return [parsed];
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} else if (split.length == 2) {
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let start = OH.ParseWeekday(split[0]);
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let end = OH.ParseWeekday(split[1]);
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if ((start ?? null) === null || (end ?? null) === null) {
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return null;
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}
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let range = [];
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for (let i = start; i <= end; i++) {
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range.push(i);
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}
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return range;
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} else {
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return null;
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}
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}
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private static ParseWeekdayRanges(weekdays: string): number[] {
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let ranges = [];
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let split = weekdays.split(",");
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for (const weekday of split) {
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const parsed = OH.ParseWeekdayRange(weekday)
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if (parsed === undefined || parsed === null) {
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return null;
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}
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ranges.push(...parsed);
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}
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return ranges;
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}
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private static multiply(weekdays: number[], timeranges: { startHour: number, startMinutes: number, endHour: number, endMinutes: number }[]) {
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if ((weekdays ?? null) == null || (timeranges ?? null) == null) {
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return null;
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}
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const ohs: OpeningHour[] = []
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for (const timerange of timeranges) {
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for (const weekday of weekdays) {
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ohs.push({
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weekday: weekday,
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startHour: timerange.startHour, startMinutes: timerange.startMinutes,
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endHour: timerange.endHour, endMinutes: timerange.endMinutes,
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});
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}
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}
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return ohs;
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}
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public static ParseRule(rule: string): OpeningHour[] {
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try {
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if (rule.trim() == "24/7") {
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return OH.multiply([0, 1, 2, 3, 4, 5, 6], [{
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startHour: 0,
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startMinutes: 0,
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endHour: 24,
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endMinutes: 0
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}]);
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}
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const split = rule.trim().replace(/, */g, ",").split(" ");
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if (split.length == 1) {
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// First, try to parse this rule as a rule without weekdays
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let timeranges = OH.ParseHhmmRanges(rule);
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let weekdays = [0, 1, 2, 3, 4, 5, 6];
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return OH.multiply(weekdays, timeranges);
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}
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if (split.length == 2) {
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const weekdays = OH.ParseWeekdayRanges(split[0]);
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const timeranges = OH.ParseHhmmRanges(split[1]);
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return OH.multiply(weekdays, timeranges);
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}
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return null;
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} catch (e) {
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console.log("Could not parse weekday rule ", rule);
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return null;
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}
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}
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static Parse(rules: string) {
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if (rules === undefined || rules === "") {
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return []
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}
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const ohs = []
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const split = rules.split(";");
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for (const rule of split) {
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if(rule === ""){
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continue;
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}
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try {
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const parsed = OH.ParseRule(rule)
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if (parsed !== null) {
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ohs.push(...parsed);
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}
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} catch (e) {
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console.error("Could not parse ", rule, ": ", e)
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}
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}
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return ohs;
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}
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}
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