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- // @flow
-
- import {stringToDate} from './Planning';
- import type {EventType} from '../screens/Home/HomeScreen';
-
- /**
- * Gets the time limit depending on the current day:
- * 17:30 for every day of the week except for thursday 11:30
- * 00:00 on weekends
- */
- export function getTodayEventTimeLimit(): Date {
- const now = new Date();
- if (now.getDay() === 4)
- // Thursday
- now.setHours(11, 30, 0);
- else if (now.getDay() === 6 || now.getDay() === 0)
- // Weekend
- now.setHours(0, 0, 0);
- else now.setHours(17, 30, 0);
- return now;
- }
-
- /**
- * Gets the duration (in milliseconds) of an event
- *
- * @param event {EventType}
- * @return {number} The number of milliseconds
- */
- export function getEventDuration(event: EventType): number {
- const start = stringToDate(event.date_begin);
- const end = stringToDate(event.date_end);
- let duration = 0;
- if (start != null && end != null) duration = end - start;
- return duration;
- }
-
- /**
- * Gets events starting after the limit
- *
- * @param events
- * @param limit
- * @return {Array<Object>}
- */
- export function getEventsAfterLimit(
- events: Array<EventType>,
- limit: Date,
- ): Array<EventType> {
- const validEvents = [];
- events.forEach((event: EventType) => {
- const startDate = stringToDate(event.date_begin);
- if (startDate != null && startDate >= limit) {
- validEvents.push(event);
- }
- });
- return validEvents;
- }
-
- /**
- * Gets the event with the longest duration in the given array.
- * If all events have the same duration, return the first in the array.
- *
- * @param events
- */
- export function getLongestEvent(events: Array<EventType>): EventType {
- let longestEvent = events[0];
- let longestTime = 0;
- events.forEach((event: EventType) => {
- const time = getEventDuration(event);
- if (time > longestTime) {
- longestTime = time;
- longestEvent = event;
- }
- });
- return longestEvent;
- }
-
- /**
- * Gets events that have not yet ended/started
- *
- * @param events
- */
- export function getFutureEvents(events: Array<EventType>): Array<EventType> {
- const validEvents = [];
- const now = new Date();
- events.forEach((event: EventType) => {
- const startDate = stringToDate(event.date_begin);
- const endDate = stringToDate(event.date_end);
- if (startDate != null) {
- if (startDate > now) validEvents.push(event);
- else if (endDate != null) {
- if (endDate > now || endDate < startDate)
- // Display event if it ends the following day
- validEvents.push(event);
- }
- }
- });
- return validEvents;
- }
-
- /**
- * Gets the event to display in the preview
- *
- * @param events
- * @return {EventType | null}
- */
- export function getDisplayEvent(events: Array<EventType>): EventType | null {
- let displayEvent = null;
- if (events.length > 1) {
- const eventsAfterLimit = getEventsAfterLimit(
- events,
- getTodayEventTimeLimit(),
- );
- if (eventsAfterLimit.length > 0) {
- if (eventsAfterLimit.length === 1) [displayEvent] = eventsAfterLimit;
- else displayEvent = getLongestEvent(events);
- } else {
- displayEvent = getLongestEvent(events);
- }
- } else if (events.length === 1) {
- [displayEvent] = events;
- }
- return displayEvent;
- }
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