refactor: move utility functions to calendarUtil.js

src/calendarUtil.js

@@ -0,0 +1,67 @@
+import ICAL from 'ical.js';
+import fs from 'fs';
+import path from 'path';
+import axios from 'axios';
+
+export const MERGED_CALENDARS_DIR = path.join(process.cwd(), 'calendar');
+
+// Ensure the merged calendars directory exists
+fs.mkdirSync(MERGED_CALENDARS_DIR, { recursive: true });
+
+// Utility to sanitize filenames
+export const sanitizeFilename = (filename) => filename.replace(/[<>:"/\\|?* ]/g, '_');
+
+// Fetch calendar data from URL or file
+export async function fetchCalendarData(calendar) {
+    const isFilePath = !calendar.url.startsWith('http');
+    try {
+        if (isFilePath) {
+            return { data: fs.readFileSync(path.resolve(calendar.url), 'utf-8'), ...calendar };
+        } else {
+            const response = await axios.get(calendar.url);
+            return { data: response.data, ...calendar };
+        }
+    } catch (error) {
+        throw new Error(`Error retrieving calendar from ${calendar.url}: ${error.message}`);
+    }
+}
+
+// Create a top-level VCALENDAR component
+export function createCalendarComponent(name) {
+    const calendarComponent = new ICAL.Component(['vcalendar', [], []]);
+    calendarComponent.updatePropertyWithValue('prodid', '-//Your Product ID//EN');
+    calendarComponent.updatePropertyWithValue('version', '2.0');
+    calendarComponent.updatePropertyWithValue('name', name);
+    return calendarComponent;
+}
+
+// Add events to the calendar component
+export function addEventsToCalendar(calendarComponent, results) {
+    results.forEach((result) => {
+        const parsed = ICAL.parse(result.data);
+        const component = new ICAL.Component(parsed);
+
+        component.getAllSubcomponents('vevent').forEach((event) => {
+            const vevent = new ICAL.Event(event);
+            const newEvent = new ICAL.Component('vevent');
+
+            const startDate = vevent.startDate && ICAL.Time.fromJSDate(vevent.startDate.toJSDate());
+            const endDate = vevent.endDate && ICAL.Time.fromJSDate(vevent.endDate.toJSDate());
+
+            newEvent.updatePropertyWithValue('uid', vevent.uid);
+            newEvent.updatePropertyWithValue('summary', `${result.prefix} ${vevent.summary}`);
+            newEvent.updatePropertyWithValue('dtstart', startDate);
+            newEvent.updatePropertyWithValue('dtend', endDate);
+
+            calendarComponent.addSubcomponent(newEvent);
+        });
+    });
+}
+
+// Save calendar data to file
+export function saveCalendarFile(filename, content) {
+    const filePath = path.join(MERGED_CALENDARS_DIR, filename);
+    console.log(`Saving calendar data to file: ${filePath}`);
+    fs.writeFileSync(filePath, content);
+    return filePath;
+}