import type { DomainEvent } from "@/lib/events";
import type { ServiceCtx } from "@/server/services/context";

/**
 * Emit a domain event AFTER the mutation succeeded. Never throws: a failing notification
 * must not roll back business data — failures are logged and surfaced via sync/notification
 * monitoring. Lanes call ONLY this function; the notifications lane owns the handler.
 */
export async function emitEvent(ctx: ServiceCtx, event: DomainEvent): Promise<void> {
  try {
    const { handleEvent } = await import("@/server/services/notifications/handle-event");
    await handleEvent(ctx, event);
  } catch (err) {
    console.error(`[events] ${event.type} for ${event.entityType}:${event.entityId} failed:`, (err as Error).message);
  }
  // L14 Abrechnungsübersicht: billing candidates after billing release / daily report approval (idempotent, never throws)
  if (event.type === "work_order.released_for_billing" || event.type === "report.approved") {
    try {
      const { onBillingEvent } = await import("@/server/services/billing/events");
      await onBillingEvent(ctx, event);
    } catch (err) {
      console.error(`[events] billing hook for ${event.type} ${event.entityId} failed:`, (err as Error).message);
    }
  }
}