Add .ics file

Author: hsnfirdaus

package.json

@@ -11,6 +11,8 @@
   },
   "dependencies": {
     "@bprogress/next": "^3.2.12",
+    "dayjs": "^1.11.18",
+    "ical-generator": "^9.0.0",
     "lucide-react": "^0.541.0",
     "motion": "^12.23.12",
     "next": "15.5.0",

pnpm-lock.yaml

@@ -0,0 +1,83 @@
+import dayjs, { type Dayjs } from "dayjs";
+import timezone from "dayjs/plugin/timezone";
+import utc from "dayjs/plugin/utc";
+import ical, {
+  ICalCalendarMethod,
+  ICalEventRepeatingFreq,
+} from "ical-generator";
+import { STATIC_CONFIG } from "@/config";
+import { listSchedules } from "@/lib/collection";
+
+dayjs.extend(utc);
+dayjs.extend(timezone);
+
+export const dynamic = "force-static";
+export async function GET() {
+  const schedules = listSchedules();
+
+  const calendar = ical({
+    name: "Terpal B24 Schedule",
+    timezone: "Asia/Jakarta",
+    method: ICalCalendarMethod.REQUEST,
+  });
+
+  schedules.forEach((day) => {
+    const startDay = dayjs
+      .tz(STATIC_CONFIG.START_SEMESTER, "Asia/Jakarta")
+      .set("day", day.parsedDay);
+
+    day.items.forEach((course) => {
+      const [startHour, startMinute] = course.startAt.split(":").map(Number);
+      const [endHour, endMinute] = course.endAt.split(":").map(Number);
+
+      const currentStart = startDay
+        .set("hour", startHour)
+        .set("minute", startMinute);
+
+      const currentEnd = startDay.set("hour", endHour).set("minute", endMinute);
+
+      const event = calendar.createEvent({
+        start: currentStart.utc(),
+        end: currentEnd.utc(),
+        summary: `${course.subject.code} - ${course.subject.title} (${course.type === "practice" ? "Praktikum" : "Teori"})`,
+        description: `Dosen: ${course.lecturer.name}`,
+        location: course.room,
+      });
+
+      const excludeDates: Dayjs[] = [];
+      STATIC_CONFIG.BLOCKING_TIME.forEach((block) => {
+        const blockStart = dayjs.tz(block.start, "Asia/Jakarta");
+        const blockEnd = dayjs.tz(block.end, "Asia/Jakarta");
+        let date = blockStart;
+        while (date <= blockEnd) {
+          if (date.day() === currentStart.day()) {
+            excludeDates.push(
+              date.set("hour", startHour).set("minute", startMinute).utc(),
+            );
+          }
+          date = date.add(1, "day");
+        }
+      });
+
+      const repeatEnd = dayjs
+        .tz(STATIC_CONFIG.END_SEMESTER, "Asia/Jakarta")
+        .subtract(6, "day")
+        .set("day", day.parsedDay)
+        .set("hour", endHour)
+        .set("minute", endMinute);
+
+      event.repeating({
+        freq: ICalEventRepeatingFreq.WEEKLY,
+        until: repeatEnd.utc(),
+        interval: 1,
+        exclude: excludeDates,
+      });
+    });
+  });
+
+  return new Response(calendar.toString(), {
+    headers: {
+      "Content-Type": "text/calendar",
+    },
+  });
+}

src/app/schedule/schedule.ics/route.ts

@@ -0,0 +1,26 @@
+export const STATIC_CONFIG = {
+  START_SEMESTER: "2025-09-08T00:00:00",
+  END_SEMESTER: "2026-01-18T23:59:59",
+  BLOCKING_TIME: [
+    {
+      title: "Minggu Pengganti ATS",
+      start: "2025-10-20T00:00:00",
+      end: "2025-10-26T23:59:59",
+    },
+    {
+      title: "ATS",
+      start: "2025-10-27T00:00:00",
+      end: "2025-11-09T23:59:59",
+    },
+    {
+      title: "Minggu Pengganti AAS",
+      start: "2025-12-29T00:00:00",
+      end: "2026-01-04T23:59:59",
+    },
+    {
+      title: "AAS",
+      start: "2026-01-05T00:00:00",
+      end: "2026-01-18T23:59:59",
+    },
+  ],
+};