// @flow export type eventObject = { id: number, title: string, logo: string, date_begin: string, date_end: string, description: string, club: string, category_id: number, url: string, }; // Regex used to check date string validity const dateRegExp = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}$/; /** * Gets the current day string representation in the format * YYYY-MM-DD * * @return {string} The string representation */ export function getCurrentDateString(): string { return dateToString(new Date(Date.now())); } /** * Checks if the given date is before the other. * * @param event1Date Event 1 date in format YYYY-MM-DD HH:MM * @param event2Date Event 2 date in format YYYY-MM-DD HH:MM * @return {boolean} */ export function isEventBefore(event1Date: string, event2Date: string): boolean { let date1 = stringToDate(event1Date); let date2 = stringToDate(event2Date); if (date1 !== null && date2 !== null) return date1 < date2; else return false; } /** * Gets only the date part of the given event date string in the format * YYYY-MM-DD HH:MM * * @param dateString The string to get the date from * @return {string|null} Date in format YYYY:MM:DD or null if given string is invalid */ export function getDateOnlyString(dateString: string): string | null { if (isEventDateStringFormatValid(dateString)) return dateString.split(" ")[0]; else return null; } /** * Checks if the given date string is in the format * YYYY-MM-DD HH:MM * * @param dateString The string to check * @return {boolean} */ export function isEventDateStringFormatValid(dateString: ?string): boolean { return dateString !== undefined && dateString !== null && dateRegExp.test(dateString); } /** * Converts the given date string to a date object.
* Accepted format: YYYY-MM-DD HH:MM * * @param dateString The string to convert * @return {Date|null} The date object or null if the given string is invalid */ export function stringToDate(dateString: string): Date | null { let date = new Date(); if (isEventDateStringFormatValid(dateString)) { let stringArray = dateString.split(' '); let dateArray = stringArray[0].split('-'); let timeArray = stringArray[1].split(':'); date.setFullYear( parseInt(dateArray[0]), parseInt(dateArray[1]) - 1, // Month range from 0 to 11 parseInt(dateArray[2]) ); date.setHours( parseInt(timeArray[0]), parseInt(timeArray[1]), 0, 0, ); } else date = null; return date; } /** * Converts a date object to a string in the format * YYYY-MM-DD HH-MM-SS * * @param date The date object to convert * @return {string} The converted string */ export function dateToString(date: Date): string { const day = String(date.getDate()).padStart(2, '0'); const month = String(date.getMonth() + 1).padStart(2, '0'); //January is 0! const year = date.getFullYear(); const hours = String(date.getHours()).padStart(2, '0'); const minutes = String(date.getMinutes()).padStart(2, '0'); return year + '-' + month + '-' + day + ' ' + hours + ':' + minutes; } /** * Returns a string corresponding to the event start and end times in the following format: * * HH:MM - HH:MM * * If the end date is not specified or is equal to start time, only start time will be shown. * * If the end date is not on the same day, 23:59 will be shown as end time * * @param start Start time in YYYY-MM-DD HH:MM:SS format * @param end End time in YYYY-MM-DD HH:MM:SS format * @return {string} Formatted string or "/ - /" on error */ export function getFormattedEventTime(start: string, end: string): string { let formattedStr = '/ - /'; let startDate = stringToDate(start); let endDate = stringToDate(end); if (startDate !== null && endDate !== null && startDate.getTime() !== endDate.getTime()) { formattedStr = String(startDate.getHours()).padStart(2, '0') + ':' + String(startDate.getMinutes()).padStart(2, '0') + ' - '; if (endDate.getFullYear() > startDate.getFullYear() || endDate.getMonth() > startDate.getMonth() || endDate.getDate() > startDate.getDate()) formattedStr += '23:59'; else formattedStr += String(endDate.getHours()).padStart(2, '0') + ':' + String(endDate.getMinutes()).padStart(2, '0'); } else if (startDate !== null) formattedStr = String(startDate.getHours()).padStart(2, '0') + ':' + String(startDate.getMinutes()).padStart(2, '0'); return formattedStr } /** * Checks if the given description can be considered empty. *
* An empty description is composed only of whitespace, br or p tags * * * @param description The text to check * @return {boolean} */ export function isDescriptionEmpty(description: ?string): boolean { if (description !== undefined && description !== null) { return description .split('

').join('') // Equivalent to a replace all .split('

').join('') .split('
').join('').trim() === ''; } else return true; } /** * Generates an object with an empty array for each key. * Each key is a date string in the format * YYYY-MM-DD * * @param numberOfMonths The number of months to create, starting from the current date * @return {Object} */ export function generateEmptyCalendar(numberOfMonths: number): Object { let end = new Date(Date.now()); end.setMonth(end.getMonth() + numberOfMonths); let daysOfYear = {}; for (let d = new Date(Date.now()); d <= end; d.setDate(d.getDate() + 1)) { const dateString = getDateOnlyString( dateToString(new Date(d))); if (dateString !== null) daysOfYear[dateString] = [] } return daysOfYear; } /** * Generates an object with an array of eventObject at each key. * Each key is a date string in the format * YYYY-MM-DD. * * If no event is available at the given key, the array will be empty * * @param eventList The list of events to map to the agenda * @param numberOfMonths The number of months to create the agenda for * @return {Object} */ export function generateEventAgenda(eventList: Array, numberOfMonths: number): Object { let agendaItems = generateEmptyCalendar(numberOfMonths); for (let i = 0; i < eventList.length; i++) { const dateString = getDateOnlyString(eventList[i].date_begin); if (dateString !== null) { const eventArray = agendaItems[dateString]; if (eventArray !== undefined) pushEventInOrder(eventArray, eventList[i]); } } return agendaItems; } /** * Adds events to the given array depending on their starting date. * * Events starting before are added at the front. * * @param eventArray The array to hold sorted events * @param event The event to add to the array */ export function pushEventInOrder(eventArray: Array, event: eventObject): Object { if (eventArray.length === 0) eventArray.push(event); else { for (let i = 0; i < eventArray.length; i++) { if (isEventBefore(event.date_begin, eventArray[i].date_begin)) { eventArray.splice(i, 0, event); break; } else if (i === eventArray.length - 1) { eventArray.push(event); break; } } } }