Basic examples for CalDAV and .ics URL

caldav.ts

@@ -1,5 +1,33 @@
 import { editor } from "@silverbulletmd/silverbullet/syscalls";
+import { QueryProviderEvent } from "@silverbulletmd/silverbullet/types";
+import { readYamlPage } from "@silverbulletmd/silverbullet/lib/yaml_page";
+import { applyQuery } from "@silverbulletmd/silverbullet/lib/query";
+import { parseIcsCalendar, type VCalendar } from "ts-ics";
 
-export async function helloWorld() {
-  await editor.flashNotification("Hello world!");
+interface Event {
+  summary: string | undefined;
+  description: string | undefined;
+}
+
+export async function queryIcs({ query }: QueryProviderEvent): Promise<any[]> {
+  const secrets = await readYamlPage("SECRETS");
+  const icsUrl = secrets.icsUrl;
+  const result = await fetch(icsUrl);
+  const icsData = await result.text();
+  const calendarParsed: VCalendar = parseIcsCalendar(icsData);
+  // TODO: Loop over multiple .ics URLs and assign calendar name based on X-WR-CALNAME
+
+  if (calendarParsed.events === undefined) {
+    editor.flashNotification("Did not parse events from iCalendar");
+    return [];
+  }
+
+  const events: Event[] = calendarParsed.events.map((ics) => {
+    return {
+      summary: ics.summary,
+      description: ics.description,
+    };
+  });
+
+  return applyQuery(query, events);
 }