import type { PlayRunnerBackend } from './types';
import { daytonaPlayRunnerBackend } from './backends/daytona';
import {
  daytonaModalFallbackPlayRunnerBackend,
  daytonaOnlyPlayRunnerBackend,
  modalOnlyPlayRunnerBackend,
  resolveDefaultRuntimeSandboxPlacementBackend,
} from './backends/daytona-modal-fallback';
import { localProcessPlayRunnerBackend } from './backends/local-process';
import { modalPlayRunnerBackend } from './backends/modal';
import {
  PLAY_RUNTIME_BACKENDS,
  normalizePlayRuntimeBackend,
  type PlayRuntimeBackendId,
} from '@shared_libs/play-runtime/backend';
import {
  runtimeSandboxPlacementPolicyForBackend,
  type RuntimeSandboxPlacementPolicyId,
} from '@shared_libs/play-runtime/runtime-sandbox-placement-policy';

export function resolveRuntimeSandboxPlacementBackend(
  policyId: RuntimeSandboxPlacementPolicyId | string,
): PlayRunnerBackend {
  return resolveDefaultRuntimeSandboxPlacementBackend(policyId);
}

export function resolvePlayRunnerBackend(
  backendId?: PlayRuntimeBackendId | string | null,
): PlayRunnerBackend {
  const backend = normalizePlayRuntimeBackend(
    backendId ?? process.env.DEEPLINE_PLAY_RUNNER_BACKEND,
  );
  const placementPolicy = runtimeSandboxPlacementPolicyForBackend(backend);
  if (placementPolicy) {
    return resolveRuntimeSandboxPlacementBackend(placementPolicy.id);
  }
  if (backend === PLAY_RUNTIME_BACKENDS.localProcess) {
    return localProcessPlayRunnerBackend;
  }
  throw new Error(`Unsupported play runner backend: ${backend}`);
}

export {
  daytonaPlayRunnerBackend,
  daytonaModalFallbackPlayRunnerBackend,
  daytonaOnlyPlayRunnerBackend,
  localProcessPlayRunnerBackend,
  modalOnlyPlayRunnerBackend,
  modalPlayRunnerBackend,
};
export type { PlayRunnerBackend };