/**
 * apps/worker — integration adapter registry (TASK-0112 §2, Phase-13 hook).
 *
 * The CALL_INTEGRATION executor looks up the adapter for the integration's
 * `provider` here. Phase 11 ships the registry EMPTY: every provider
 * resolves to `undefined` → the executor fails with the FATAL
 * INTEGRATION_NOT_AVAILABLE (Phase 13). Phase 13 fills the map with real
 * adapters (GitHub/Slack/…) without touching the executor.
 *
 * An adapter is a thin, provider-specific implementation of the executor
 * surface: it validates `params` against the provider's operation contract
 * and performs the side effect, returning the standard ActionResult.
 */
import type { ActionExecutor, ActionResult, AutomationRunContext, ExecutorDeps } from "./types.js";

export interface IntegrationAdapter {
  /** The provider name this adapter handles (the Integration.provider value). */
  provider: string;
  execute(cfg: Record<string, unknown>, ctx: AutomationRunContext, deps: ExecutorDeps): Promise<ActionResult>;
}

/** Provider → adapter. Empty until Phase 13. */
const adapters = new Map<string, IntegrationAdapter>();

/** Register an adapter (Phase 13). */
export function registerAdapter(adapter: IntegrationAdapter): void {
  adapters.set(adapter.provider, adapter);
}

/** Look up an adapter by provider name (undefined → not available). */
export function adapterFor(provider: string): IntegrationAdapter | undefined {
  return adapters.get(provider);
}

export type { ActionExecutor };