2020-03-30 15:28:08 +02:00
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// @flow
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export type eventObject = {
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id: number,
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title: string,
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logo: string,
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date_begin: string,
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date_end: string,
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description: string,
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club: string,
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category_id: number,
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url: string,
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};
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// Regex used to check date string validity
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const dateRegExp = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}$/;
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/**
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* Gets the current day string representation in the format
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* YYYY-MM-DD
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*
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* @return {string} The string representation
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*/
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export function getCurrentDateString(): string {
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return dateToString(new Date(Date.now()));
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}
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/**
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* Checks if the given date is before the other.
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*
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* @param event1Date Event 1 date in format YYYY-MM-DD HH:MM
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* @param event2Date Event 2 date in format YYYY-MM-DD HH:MM
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* @return {boolean}
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*/
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export function isEventBefore(event1Date: string, event2Date: string): boolean {
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let date1 = stringToDate(event1Date);
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let date2 = stringToDate(event2Date);
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if (date1 !== null && date2 !== null)
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return date1 < date2;
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else
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return false;
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}
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/**
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* Gets only the date part of the given event date string in the format
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* YYYY-MM-DD HH:MM
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*
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* @param dateString The string to get the date from
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* @return {string|null} Date in format YYYY:MM:DD or null if given string is invalid
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*/
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export function getDateOnlyString(dateString: string): string | null {
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if (isEventDateStringFormatValid(dateString))
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return dateString.split(" ")[0];
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else
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return null;
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}
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/**
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* Checks if the given date string is in the format
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* YYYY-MM-DD HH:MM
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*
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* @param dateString The string to check
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* @return {boolean}
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*/
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export function isEventDateStringFormatValid(dateString: ?string): boolean {
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return dateString !== undefined
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&& dateString !== null
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&& dateRegExp.test(dateString);
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}
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/**
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* Converts the given date string to a date object.<br>
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* Accepted format: YYYY-MM-DD HH:MM
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*
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* @param dateString The string to convert
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* @return {Date|null} The date object or null if the given string is invalid
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*/
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export function stringToDate(dateString: string): Date | null {
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let date = new Date();
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if (isEventDateStringFormatValid(dateString)) {
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let stringArray = dateString.split(' ');
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let dateArray = stringArray[0].split('-');
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let timeArray = stringArray[1].split(':');
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date.setFullYear(
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parseInt(dateArray[0]),
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parseInt(dateArray[1]) - 1, // Month range from 0 to 11
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parseInt(dateArray[2])
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);
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date.setHours(
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parseInt(timeArray[0]),
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parseInt(timeArray[1]),
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0,
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0,
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);
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} else
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date = null;
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return date;
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}
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/**
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* Converts a date object to a string in the format
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* YYYY-MM-DD HH-MM-SS
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*
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* @param date The date object to convert
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* @return {string} The converted string
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*/
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export function dateToString(date: Date): string {
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const day = String(date.getDate()).padStart(2, '0');
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const month = String(date.getMonth() + 1).padStart(2, '0'); //January is 0!
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const year = date.getFullYear();
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const hours = String(date.getHours()).padStart(2, '0');
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const minutes = String(date.getMinutes()).padStart(2, '0');
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return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes;
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}
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/**
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* Returns a string corresponding to the event start and end times in the following format:
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*
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* HH:MM - HH:MM
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*
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* If the end date is not specified or is equal to start time, only start time will be shown.
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*
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* If the end date is not on the same day, 23:59 will be shown as end time
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*
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* @param start Start time in YYYY-MM-DD HH:MM:SS format
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* @param end End time in YYYY-MM-DD HH:MM:SS format
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* @return {string} Formatted string or "/ - /" on error
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*/
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export function getFormattedEventTime(start: string, end: string): string {
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let formattedStr = '/ - /';
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let startDate = stringToDate(start);
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let endDate = stringToDate(end);
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if (startDate !== null && endDate !== null && startDate.getTime() !== endDate.getTime()) {
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formattedStr = String(startDate.getHours()).padStart(2, '0') + ':'
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+ String(startDate.getMinutes()).padStart(2, '0') + ' - ';
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if (endDate.getFullYear() > startDate.getFullYear()
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|| endDate.getMonth() > startDate.getMonth()
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|| endDate.getDate() > startDate.getDate())
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formattedStr += '23:59';
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else
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formattedStr += String(endDate.getHours()).padStart(2, '0') + ':'
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+ String(endDate.getMinutes()).padStart(2, '0');
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} else if (startDate !== null)
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formattedStr =
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String(startDate.getHours()).padStart(2, '0') + ':'
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+ String(startDate.getMinutes()).padStart(2, '0');
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return formattedStr
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}
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/**
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* Checks if the given description can be considered empty.
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* <br>
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* An empty description is composed only of whitespace, <b>br</b> or <b>p</b> tags
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*
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*
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* @param description The text to check
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* @return {boolean}
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*/
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export function isDescriptionEmpty(description: ?string): boolean {
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if (description !== undefined && description !== null) {
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return description
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.split('<p>').join('') // Equivalent to a replace all
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.split('</p>').join('')
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.split('<br>').join('').trim() === '';
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} else
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return true;
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}
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/**
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* Generates an object with an empty array for each key.
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* Each key is a date string in the format
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* YYYY-MM-DD
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*
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* @param numberOfMonths The number of months to create, starting from the current date
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* @return {Object}
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*/
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export function generateEmptyCalendar(numberOfMonths: number): Object {
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let end = new Date(Date.now());
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end.setMonth(end.getMonth() + numberOfMonths);
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let daysOfYear = {};
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for (let d = new Date(Date.now()); d <= end; d.setDate(d.getDate() + 1)) {
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const dateString = getDateOnlyString(
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dateToString(new Date(d)));
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if (dateString !== null)
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daysOfYear[dateString] = []
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}
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return daysOfYear;
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}
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/**
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* Generates an object with an array of eventObject at each key.
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* Each key is a date string in the format
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* YYYY-MM-DD.
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*
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* If no event is available at the given key, the array will be empty
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*
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* @param eventList The list of events to map to the agenda
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* @param numberOfMonths The number of months to create the agenda for
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* @return {Object}
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*/
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export function generateEventAgenda(eventList: Array<eventObject>, numberOfMonths: number): Object {
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let agendaItems = generateEmptyCalendar(numberOfMonths);
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for (let i = 0; i < eventList.length; i++) {
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const dateString = getDateOnlyString(eventList[i].date_begin);
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if (dateString !== null) {
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const eventArray = agendaItems[dateString];
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if (eventArray !== undefined)
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2020-03-30 15:43:08 +02:00
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pushEventInOrder(eventArray, eventList[i]);
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2020-03-30 15:28:08 +02:00
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}
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}
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return agendaItems;
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}
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/**
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* Adds events to the given array depending on their starting date.
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*
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* Events starting before are added at the front.
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*
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* @param eventArray The array to hold sorted events
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* @param event The event to add to the array
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*/
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export function pushEventInOrder(eventArray: Array<eventObject>, event: eventObject): Object {
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if (eventArray.length === 0)
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eventArray.push(event);
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else {
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for (let i = 0; i < eventArray.length; i++) {
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if (isEventBefore(event.date_begin, eventArray[i].date_begin)) {
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eventArray.splice(i, 0, event);
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break;
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} else if (i === eventArray.length - 1) {
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eventArray.push(event);
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break;
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}
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}
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}
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}
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