/**
 * Next.js Instrumentation — runs once on server startup.
 *
 * Sets up:
 * - Automation event handler registration
 * - Hourly deadline scheduler
 */
export async function register() {
  if (process.env.NEXT_RUNTIME === "nodejs") {
    // Register automation event handler (side-effect import)
    await import("@/lib/services/automation-service");

    // Start hourly deadline check
    const { emitDeadlineEvents } = await import(
      "@/lib/services/deadline-service"
    );
    const { prisma } = await import("@/lib/prisma");

    const HOUR_MS = 60 * 60 * 1000;

    const runDeadlineCheck = async () => {
      try {
        const orgs = await prisma.organization.findMany({
          select: { id: true },
        });
        for (const org of orgs) {
          await emitDeadlineEvents(org.id);
        }
        console.log(
          `[Deadline Scheduler] Checked ${orgs.length} org(s) for deadlines`
        );
      } catch (err) {
        console.error("[Deadline Scheduler] Error:", err);
      }
    };

    // Initial check after 30s (let server fully start)
    setTimeout(runDeadlineCheck, 30_000);

    // Then every hour
    setInterval(runDeadlineCheck, HOUR_MS);

    console.log("[Instrumentation] Deadline scheduler registered (hourly)");
  }
}