import type { ResourceStep } from "../../types/Step";
import type { Resource, EventResource } from "../../types/Resource";
import type { VoidyClient } from "../../core/VoidyClient";
import type { ResourceCache } from "../../core/cache";
import { createEventContext } from "../../core/context";

export const eventStep: ResourceStep = {
  name: "event",

  match(resource: Resource): boolean {
    return resource.type === "event";
  },

  process(resource: Resource, { cache }): Resource | null {
    const evt = resource as EventResource;

    if (!evt.id || !evt.name || !evt.execute) {
      console.warn(`[EventStep] Skipping invalid event: missing id, name, or execute`);
      return null;
    }

    cache.set("event", evt.id, evt);
    return evt;
  },

  finalize(client: VoidyClient, cache: ResourceCache): void {
    const events = cache.getAll<EventResource>("event");

    for (const [, evt] of events) {
      const ctx = createEventContext(client, evt);
      const handler = (...args: unknown[]) => evt.execute(ctx, ...args);

      if (evt.once) client.once(evt.name, handler);
      else client.on(evt.name, handler);
    }
  },
};