add event CRUD actions and recurring event expansion

- Implement full CRUD in MongoEventRepository (findById, findByUserId, findByDateRange, update, delete)
- Extend ChatService to handle create/update/delete actions with dynamic test responses
- Add recurrenceExpander utility using rrule library for RRULE parsing
- Add eventFormatters utility for German-localized week/month overviews
- Add German translations for days and months in shared Constants
- Update client ChatService to support all event actions (action, eventId, updates params)
This commit is contained in:
2026-01-04 16:15:30 +01:00
parent 9fecf94c7d
commit 77f15b6dd1
11 changed files with 577 additions and 174 deletions

View File

@@ -1,5 +1,5 @@
import { Response } from 'express';
import { SendMessageDTO, CreateEventDTO } from '@caldav/shared';
import { SendMessageDTO, CreateEventDTO, UpdateEventDTO, EventAction } from '@caldav/shared';
import { ChatService } from '../services';
import { AuthenticatedRequest } from '../middleware';
@@ -21,8 +21,21 @@ export class ChatController {
try {
const userId = req.user!.userId;
const { conversationId, messageId } = req.params;
const event: CreateEventDTO = req.body;
const response = await this.chatService.confirmEvent(userId, conversationId, messageId, event);
const { action, event, eventId, updates } = req.body as {
action: EventAction;
event?: CreateEventDTO;
eventId?: string;
updates?: UpdateEventDTO;
};
const response = await this.chatService.confirmEvent(
userId,
conversationId,
messageId,
action,
event,
eventId,
updates
);
res.json(response);
} catch (error) {
res.status(500).json({ error: 'Failed to confirm event' });

View File

@@ -4,15 +4,22 @@ import { EventModel } from './models';
export class MongoEventRepository implements EventRepository {
async findById(id: string): Promise<CalendarEvent | null> {
throw new Error('Not implemented');
const event = await EventModel.findById(id);
if (!event) return null;
return event.toJSON() as unknown as CalendarEvent;
}
async findByUserId(userId: string): Promise<CalendarEvent[]> {
throw new Error('Not implemented');
const events = await EventModel.find({ userId }).sort({ startTime: 1 });
return events.map(e => e.toJSON() as unknown as CalendarEvent);
}
async findByDateRange(userId: string, startDate: Date, endDate: Date): Promise<CalendarEvent[]> {
throw new Error('Not implemented');
const events = await EventModel.find({
userId,
startTime: { $gte: startDate, $lte: endDate }
}).sort({ startTime: 1 });
return events.map(e => e.toJSON() as unknown as CalendarEvent);
}
async create(userId: string, data: CreateEventDTO): Promise<CalendarEvent> {
@@ -22,10 +29,13 @@ export class MongoEventRepository implements EventRepository {
}
async update(id: string, data: UpdateEventDTO): Promise<CalendarEvent | null> {
throw new Error('Not implemented');
const event = await EventModel.findByIdAndUpdate(id, data, { new: true });
if (!event) return null;
return event.toJSON() as unknown as CalendarEvent;
}
async delete(id: string): Promise<boolean> {
throw new Error('Not implemented');
const result = await EventModel.findByIdAndDelete(id);
return result !== null;
}
}

View File

@@ -1,163 +1,211 @@
import { ChatMessage, ChatResponse, SendMessageDTO, ConversationSummary, GetMessagesOptions, ProposedEventChange, getDay, CreateEventDTO } from '@caldav/shared';
import { ChatMessage, ChatResponse, SendMessageDTO, ConversationSummary, GetMessagesOptions, ProposedEventChange, getDay, CreateEventDTO, UpdateEventDTO, EventAction } from '@caldav/shared';
import { ChatRepository, EventRepository, AIProvider } from './interfaces';
import { getWeeksOverview, getMonthOverview } from '../utils/eventFormatters';
// Test responses array (cycles through responses)
let responseIndex = 0;
type TestResponse = { content: string; proposedChange?: ProposedEventChange };
const testResponses: Array<{ content: string; proposedChange?: ProposedEventChange }> = [
// {{{
// Response 1: Meeting mit Jens - next Friday 14:00
{
content: "Alles klar! Ich erstelle dir einen Termin für das Meeting mit Jens am nächsten Freitag um 14:00 Uhr:",
proposedChange: {
action: 'create',
event: {
title: "Meeting mit Jens",
startTime: getDay('Friday', 1, 14, 0),
endTime: getDay('Friday', 1, 15, 0),
description: "Arbeitstreffen",
// Test response index (cycles through responses)
let responseIndex = 8;
// Static test responses (event proposals)
const staticResponses: TestResponse[] = [
// {{{
// Response 0: Meeting mit Jens - next Friday 14:00
{
content: "Alles klar! Ich erstelle dir einen Termin für das Meeting mit Jens am nächsten Freitag um 14:00 Uhr:",
proposedChange: {
action: 'create',
event: {
title: "Meeting mit Jens",
startTime: getDay('Friday', 1, 14, 0),
endTime: getDay('Friday', 1, 15, 0),
description: "Arbeitstreffen",
}
}
}
},
// Response 2: Recurring event - every Saturday 10:00
{
content: "Verstanden! Ich erstelle einen wiederkehrenden Termin: Jeden Samstag um 10:00 Uhr Badezimmer putzen:",
proposedChange: {
action: 'create',
event: {
title: "Badezimmer putzen",
startTime: getDay('Saturday', 1, 10, 0),
endTime: getDay('Saturday', 1, 11, 0),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=SA",
},
// Response 1: Recurring event - every Saturday 10:00
{
content: "Verstanden! Ich erstelle einen wiederkehrenden Termin: Jeden Samstag um 10:00 Uhr Badezimmer putzen:",
proposedChange: {
action: 'create',
event: {
title: "Badezimmer putzen",
startTime: getDay('Saturday', 1, 10, 0),
endTime: getDay('Saturday', 1, 11, 0),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=SA",
}
}
}
},
// Response 3: Calendar overview (text only, no proposedChange)
{
content: "Hier sind deine Termine für die nächsten 2 Wochen:\n\n" +
"Freitag, 10.01. - 14:00 Uhr: Meeting mit Jens\n" +
"Samstag, 11.01. - 10:00 Uhr: Badezimmer putzen\n" +
"Samstag, 18.01. - 10:00 Uhr: Badezimmer putzen\n\n" +
"Insgesamt 3 Termine.",
},
// Response 4: Doctor appointment with description
{
content: "Ich habe dir einen Arzttermin eingetragen. Denk daran, deine Versichertenkarte mitzunehmen!",
proposedChange: {
action: 'create',
event: {
title: "Arzttermin Dr. Müller",
startTime: getDay('Wednesday', 1, 9, 30),
endTime: getDay('Wednesday', 1, 10, 30),
description: "Routineuntersuchung - Versichertenkarte nicht vergessen",
},
// Response 2: 2-week overview (DYNAMIC - placeholder)
{ content: '' },
// Response 3: Delete "Meeting mit Jens" (DYNAMIC - placeholder)
{ content: '' },
// Response 4: Doctor appointment with description
{
content: "Ich habe dir einen Arzttermin eingetragen. Denk daran, deine Versichertenkarte mitzunehmen!",
proposedChange: {
action: 'create',
event: {
title: "Arzttermin Dr. Müller",
startTime: getDay('Wednesday', 1, 9, 30),
endTime: getDay('Wednesday', 1, 10, 30),
description: "Routineuntersuchung - Versichertenkarte nicht vergessen",
}
}
}
},
// Response 5: Birthday - yearly recurring
{
content: "Geburtstage vergisst man leicht - aber nicht mit mir! Ich habe Mamas Geburtstag eingetragen:",
proposedChange: {
action: 'create',
event: {
title: "Mamas Geburtstag",
startTime: getDay('Thursday', 2, 0, 0),
endTime: getDay('Thursday', 2, 23, 59),
isRecurring: true,
recurrenceRule: "FREQ=YEARLY",
},
// Response 5: Birthday - yearly recurring
{
content: "Geburtstage vergisst man leicht - aber nicht mit mir! Ich habe Mamas Geburtstag eingetragen:",
proposedChange: {
action: 'create',
event: {
title: "Mamas Geburtstag",
startTime: getDay('Thursday', 2, 0, 0),
endTime: getDay('Thursday', 2, 23, 59),
isRecurring: true,
recurrenceRule: "FREQ=YEARLY",
}
}
}
},
// Response 6: Gym - recurring for 2 months (8 weeks)
{
content: "Perfekt! Ich habe dein Probetraining eingetragen - jeden Dienstag für die nächsten 2 Monate:",
proposedChange: {
action: 'create',
event: {
title: "Fitnessstudio Probetraining",
startTime: getDay('Tuesday', 1, 18, 0),
endTime: getDay('Tuesday', 1, 19, 30),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=TU;COUNT=8",
},
// Response 6: Gym - recurring for 2 months (8 weeks)
{
content: "Perfekt! Ich habe dein Probetraining eingetragen - jeden Dienstag für die nächsten 2 Monate:",
proposedChange: {
action: 'create',
event: {
title: "Fitnessstudio Probetraining",
startTime: getDay('Tuesday', 1, 18, 0),
endTime: getDay('Tuesday', 1, 19, 30),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=TU;COUNT=8",
}
}
}
},
// Response 7: Weekly calendar overview (text only)
{
content: "Hier ist dein Überblick für nächste Woche:\n\n" +
"Montag - Keine Termine\n" +
"Dienstag, 18:00 Uhr: Fitnessstudio\n" +
"Mittwoch, 09:30 Uhr: Arzttermin Dr. Müller\n" +
"Donnerstag - Keine Termine\n" +
"Freitag, 14:00 Uhr: Meeting mit Jens\n" +
"Samstag, 10:00 Uhr: Badezimmer putzen\n" +
"Sonntag, 11:00 Uhr: Telefonat mit Mama\n\n" +
"Insgesamt 5 Termine nächste Woche.",
},
// Response 8: Help response (text only)
{
content: "Ich bin dein Kalender-Assistent! Du kannst mir einfach sagen, welche Termine du erstellen, ändern oder löschen möchtest. Zum Beispiel:\n\n" +
"• \"Erstelle einen Termin für morgen um 15 Uhr\"\n" +
"• \"Was habe ich nächste Woche vor?\"\n" +
"• \"Verschiebe das Meeting auf Donnerstag\"\n\n" +
"Wie kann ich dir helfen?",
},
// Response 9: Phone call - short appointment
{
content: "Alles klar! Ich habe das Telefonat mit deiner Mutter eingetragen:",
proposedChange: {
action: 'create',
event: {
title: "Telefonat mit Mama",
startTime: getDay('Sunday', 0, 11, 0),
endTime: getDay('Sunday', 0, 11, 30),
},
// Response 7: 1-week overview (DYNAMIC - placeholder)
{ content: '' },
// Response 8: Help response (text only)
{
content: "Ich bin dein Kalender-Assistent! Du kannst mir einfach sagen, welche Termine du erstellen, ändern oder löschen möchtest. Zum Beispiel:\n\n" +
"• \"Erstelle einen Termin für morgen um 15 Uhr\"\n" +
"• \"Was habe ich nächste Woche vor?\"\n" +
"• \"Verschiebe das Meeting auf Donnerstag\"\n\n" +
"Wie kann ich dir helfen?",
},
// Response 9: Phone call - short appointment
{
content: "Alles klar! Ich habe das Telefonat mit deiner Mutter eingetragen:",
proposedChange: {
action: 'create',
event: {
title: "Telefonat mit Mama",
startTime: getDay('Sunday', 0, 11, 0),
endTime: getDay('Sunday', 0, 11, 30),
}
}
}
},
// Response 10: Birthday party - evening event
{
content: "Super! Die Geburtstagsfeier ist eingetragen. Viel Spaß!",
proposedChange: {
action: 'create',
event: {
title: "Geburtstagsfeier Lisa",
startTime: getDay('Saturday', 2, 19, 0),
endTime: getDay('Saturday', 2, 23, 0),
description: "Geschenk: Buch über Fotografie",
},
// Response 10: Update "Telefonat mit Mama" +2 days (DYNAMIC - placeholder)
{ content: '' },
// Response 11: Birthday party - evening event
{
content: "Super! Die Geburtstagsfeier ist eingetragen. Viel Spaß!",
proposedChange: {
action: 'create',
event: {
title: "Geburtstagsfeier Lisa",
startTime: getDay('Saturday', 2, 19, 0),
endTime: getDay('Saturday', 2, 23, 0),
description: "Geschenk: Buch über Fotografie",
}
}
}
},
// Response 11: Language course - limited to 8 weeks
{
content: "Dein Spanischkurs ist eingetragen! Er läuft jeden Donnerstag für die nächsten 8 Wochen:",
proposedChange: {
action: 'create',
event: {
title: "Spanischkurs VHS",
startTime: getDay('Thursday', 1, 19, 0),
endTime: getDay('Thursday', 1, 20, 30),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=TH;COUNT=8",
},
// Response 12: Language course - limited to 8 weeks
{
content: "Dein Spanischkurs ist eingetragen! Er läuft jeden Donnerstag für die nächsten 8 Wochen:",
proposedChange: {
action: 'create',
event: {
title: "Spanischkurs VHS",
startTime: getDay('Thursday', 1, 19, 0),
endTime: getDay('Thursday', 1, 20, 30),
isRecurring: true,
recurrenceRule: "FREQ=WEEKLY;BYDAY=TH;COUNT=8",
}
}
}
},
// Response 12: Monthly calendar overview (text only)
{
content: "Hier ist deine Monatsübersicht für Januar:\n\n" +
"KW 2: 3 Termine\n" +
" • Mi 08.01., 09:30: Arzttermin Dr. Müller\n" +
" • Fr 10.01., 14:00: Meeting mit Jens\n" +
" • Sa 11.01., 10:00: Badezimmer putzen\n\n" +
"KW 3: 4 Termine\n" +
" • Di 14.01., 18:00: Fitnessstudio\n" +
" • Do 16.01., 19:00: Spanischkurs VHS\n" +
" • Sa 18.01., 10:00: Badezimmer putzen\n" +
" • Sa 18.01., 19:00: Geburtstagsfeier Lisa\n\n" +
"Insgesamt 7 Termine im Januar.",
},
// }}}
},
// Response 13: Monthly overview (DYNAMIC - placeholder)
{ content: '' },
// }}}
];
async function getTestResponse(
index: number,
eventRepo: EventRepository,
userId: string
): Promise<TestResponse> {
const responseIdx = index % staticResponses.length;
// Dynamic responses: fetch events from DB and format
if (responseIdx === 2) {
return { content: await getWeeksOverview(eventRepo, userId, 2) };
}
if (responseIdx === 3) {
// Delete "Meeting mit Jens"
const events = await eventRepo.findByUserId(userId);
const jensEvent = events.find(e => e.title === 'Meeting mit Jens');
if (jensEvent) {
return {
content: "Alles klar, ich lösche den Termin 'Meeting mit Jens' für dich:",
proposedChange: {
action: 'delete',
eventId: jensEvent.id,
}
};
}
return { content: "Ich konnte keinen Termin 'Meeting mit Jens' finden." };
}
if (responseIdx === 7) {
return { content: await getWeeksOverview(eventRepo, userId, 1) };
}
if (responseIdx === 10) {
// Update "Telefonat mit Mama" +2 days
const events = await eventRepo.findByUserId(userId);
const mamaEvent = events.find(e => e.title === 'Telefonat mit Mama');
if (mamaEvent) {
const newStart = new Date(mamaEvent.startTime);
newStart.setDate(newStart.getDate() + 2);
const newEnd = new Date(mamaEvent.endTime);
newEnd.setDate(newEnd.getDate() + 2);
return {
content: "Alles klar, ich verschiebe das Telefonat mit Mama um 2 Tage nach hinten:",
proposedChange: {
action: 'update',
eventId: mamaEvent.id,
updates: { startTime: newStart, endTime: newEnd },
// Include event with new times for display
event: {
title: mamaEvent.title,
startTime: newStart,
endTime: newEnd,
description: mamaEvent.description,
}
}
};
}
return { content: "Ich konnte keinen Termin 'Telefonat mit Mama' finden." };
}
if (responseIdx === 13) {
const now = new Date();
return { content: await getMonthOverview(eventRepo, userId, now.getFullYear(), now.getMonth()) };
}
return staticResponses[responseIdx];
}
export class ChatService {
constructor(
private chatRepo: ChatRepository,
@@ -166,7 +214,7 @@ export class ChatService {
) {}
async processMessage(userId: string, data: SendMessageDTO): Promise<ChatResponse> {
const response = testResponses[responseIndex % testResponses.length];
const response = await getTestResponse(responseIndex, this.eventRepo, userId);
responseIndex++;
const message: ChatMessage = {
@@ -180,14 +228,37 @@ export class ChatService {
return { message, conversationId: message.conversationId };
}
async confirmEvent(userId: string, conversationId: string, messageId: string, event: CreateEventDTO): Promise<ChatResponse> {
const createdEvent = await this.eventRepo.create(userId, event);
async confirmEvent(
userId: string,
conversationId: string,
messageId: string,
action: EventAction,
event?: CreateEventDTO,
eventId?: string,
updates?: UpdateEventDTO
): Promise<ChatResponse> {
let content: string;
if (action === 'create' && event) {
const createdEvent = await this.eventRepo.create(userId, event);
content = `Der Termin "${createdEvent.title}" wurde erstellt.`;
} else if (action === 'update' && eventId && updates) {
const updatedEvent = await this.eventRepo.update(eventId, updates);
content = updatedEvent
? `Der Termin "${updatedEvent.title}" wurde aktualisiert.`
: 'Termin nicht gefunden.';
} else if (action === 'delete' && eventId) {
await this.eventRepo.delete(eventId);
content = 'Der Termin wurde gelöscht.';
} else {
content = 'Ungültige Aktion.';
}
const message: ChatMessage = {
id: Date.now().toString(),
conversationId,
sender: 'assistant',
content: `Der Termin "${createdEvent.title}" wurde erstellt.`,
content,
};
return { message, conversationId };
}

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@@ -0,0 +1,125 @@
import {
MONTHS,
DAY_INDEX_TO_DAY,
DAY_TO_GERMAN,
DAY_TO_GERMAN_SHORT,
MONTH_TO_GERMAN,
} from '@caldav/shared';
import { EventRepository } from '../services/interfaces';
import { expandRecurringEvents, ExpandedEvent } from './recurrenceExpander';
// Private formatting helpers
function formatTime(date: Date): string {
const hours = date.getHours().toString().padStart(2, '0');
const minutes = date.getMinutes().toString().padStart(2, '0');
return `${hours}:${minutes}`;
}
function formatDateShort(date: Date): string {
const day = date.getDate().toString().padStart(2, '0');
const month = (date.getMonth() + 1).toString().padStart(2, '0');
return `${day}.${month}.`;
}
function getWeekNumber(date: Date): number {
const d = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
const dayNum = d.getUTCDay() || 7;
d.setUTCDate(d.getUTCDate() + 4 - dayNum);
const yearStart = new Date(Date.UTC(d.getUTCFullYear(), 0, 1));
return Math.ceil((((d.getTime() - yearStart.getTime()) / 86400000) + 1) / 7);
}
function formatWeeksText(events: ExpandedEvent[], weeks: number): string {
const weeksText = weeks === 1 ? 'die nächste Woche' : `die nächsten ${weeks} Wochen`;
if (events.length === 0) {
return `Du hast für ${weeksText} keine Termine.`;
}
const lines: string[] = [`Hier sind deine Termine für ${weeksText}:\n`];
for (const event of events) {
const day = DAY_INDEX_TO_DAY[event.occurrenceStart.getDay()];
const weekday = DAY_TO_GERMAN[day];
const dateStr = formatDateShort(event.occurrenceStart);
const timeStr = formatTime(event.occurrenceStart);
lines.push(`${weekday}, ${dateStr} - ${timeStr} Uhr: ${event.title}`);
}
lines.push(`\nInsgesamt ${events.length} Termin${events.length === 1 ? '' : 'e'}.`);
return lines.join('\n');
}
function formatMonthText(events: ExpandedEvent[], monthName: string): string {
if (events.length === 0) {
return `Du hast im ${monthName} keine Termine.`;
}
// Group events by calendar week
const weekGroups = new Map<number, ExpandedEvent[]>();
for (const event of events) {
const weekNum = getWeekNumber(event.occurrenceStart);
if (!weekGroups.has(weekNum)) {
weekGroups.set(weekNum, []);
}
weekGroups.get(weekNum)!.push(event);
}
const lines: string[] = [`Hier ist deine Monatsübersicht für ${monthName}:\n`];
// Sort weeks and format
const sortedWeeks = Array.from(weekGroups.keys()).sort((a, b) => a - b);
for (const weekNum of sortedWeeks) {
const weekEvents = weekGroups.get(weekNum)!;
lines.push(`KW ${weekNum}: ${weekEvents.length} Termin${weekEvents.length === 1 ? '' : 'e'}`);
for (const event of weekEvents) {
const day = DAY_INDEX_TO_DAY[event.occurrenceStart.getDay()];
const weekdayShort = DAY_TO_GERMAN_SHORT[day];
const dateStr = formatDateShort(event.occurrenceStart);
const timeStr = formatTime(event.occurrenceStart);
lines.push(`${weekdayShort} ${dateStr}, ${timeStr}: ${event.title}`);
}
lines.push('');
}
lines.push(`Insgesamt ${events.length} Termin${events.length === 1 ? '' : 'e'} im ${monthName}.`);
return lines.join('\n');
}
// Public API
/**
* Get a formatted overview of events for the next x weeks.
* Recurring events are expanded to show all occurrences within the range.
*/
export async function getWeeksOverview(
eventRepo: EventRepository,
userId: string,
weeks: number
): Promise<string> {
const now = new Date();
const endDate = new Date(now.getTime() + weeks * 7 * 24 * 60 * 60 * 1000);
const events = await eventRepo.findByUserId(userId);
const expanded = expandRecurringEvents(events, now, endDate);
return formatWeeksText(expanded, weeks);
}
/**
* Get a formatted overview of events for a specific month.
* Recurring events are expanded to show all occurrences within the month.
*/
export async function getMonthOverview(
eventRepo: EventRepository,
userId: string,
year: number,
month: number
): Promise<string> {
const startOfMonth = new Date(year, month, 1);
const endOfMonth = new Date(year, month + 1, 0, 23, 59, 59);
const events = await eventRepo.findByUserId(userId);
const expanded = expandRecurringEvents(events, startOfMonth, endOfMonth);
const monthName = MONTH_TO_GERMAN[MONTHS[month]];
return formatMonthText(expanded, monthName);
}

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@@ -0,0 +1,109 @@
import { RRule, rrulestr } from 'rrule';
import { CalendarEvent } from '@caldav/shared';
export interface ExpandedEvent extends CalendarEvent {
occurrenceStart: Date;
occurrenceEnd: Date;
}
// Convert local time to "fake UTC" for rrule
// rrule interprets all dates as UTC internally, so we need to trick it
function toRRuleDate(date: Date): Date {
return new Date(Date.UTC(
date.getFullYear(),
date.getMonth(),
date.getDate(),
date.getHours(),
date.getMinutes(),
date.getSeconds()
));
}
// Convert rrule result back to local time
function fromRRuleDate(date: Date): Date {
return new Date(
date.getUTCFullYear(),
date.getUTCMonth(),
date.getUTCDate(),
date.getUTCHours(),
date.getUTCMinutes(),
date.getUTCSeconds()
);
}
/**
* Expand recurring events into individual occurrences within a date range.
* Non-recurring events are returned as-is with occurrenceStart/End = startTime/endTime.
*/
export function expandRecurringEvents(
events: CalendarEvent[],
rangeStart: Date,
rangeEnd: Date
): ExpandedEvent[] {
const expanded: ExpandedEvent[] = [];
for (const event of events) {
const startTime = new Date(event.startTime);
const endTime = new Date(event.endTime);
const duration = endTime.getTime() - startTime.getTime();
if (!event.isRecurring || !event.recurrenceRule) {
// Non-recurring event: add as-is if within range
if (startTime >= rangeStart && startTime <= rangeEnd) {
expanded.push({
...event,
occurrenceStart: startTime,
occurrenceEnd: endTime,
});
}
continue;
}
// Recurring event: parse RRULE and expand
try {
const rule = rrulestr(`DTSTART:${formatRRuleDateString(startTime)}\nRRULE:${event.recurrenceRule}`);
// Get occurrences within the range (using fake UTC dates)
const occurrences = rule.between(
toRRuleDate(rangeStart),
toRRuleDate(rangeEnd),
true // inclusive
);
for (const occurrence of occurrences) {
const occurrenceStart = fromRRuleDate(occurrence);
const occurrenceEnd = new Date(occurrenceStart.getTime() + duration);
expanded.push({
...event,
occurrenceStart,
occurrenceEnd,
});
}
} catch (error) {
// If RRULE parsing fails, include the event as a single occurrence
console.error(`Failed to parse recurrence rule for event ${event.id}:`, error);
expanded.push({
...event,
occurrenceStart: startTime,
occurrenceEnd: endTime,
});
}
}
// Sort by occurrence start time
expanded.sort((a, b) => a.occurrenceStart.getTime() - b.occurrenceStart.getTime());
return expanded;
}
// Format date as RRULE DTSTART string (YYYYMMDDTHHMMSS)
function formatRRuleDateString(date: Date): string {
const year = date.getFullYear();
const month = String(date.getMonth() + 1).padStart(2, '0');
const day = String(date.getDate()).padStart(2, '0');
const hours = String(date.getHours()).padStart(2, '0');
const minutes = String(date.getMinutes()).padStart(2, '0');
const seconds = String(date.getSeconds()).padStart(2, '0');
return `${year}${month}${day}T${hours}${minutes}${seconds}`;
}