import { backfillConversationPackageArtifacts } from './mindspace-conversation-package-backfill.mjs';
import { createConversationPackagePublicHtmlHydrator } from './mindspace-conversation-package-public-html.mjs';
import { createMindSpaceLocalRuntimeServices } from './mindspace-local-runtime-services.mjs';

export function createMindSpaceLocalServerAdapter({
  pool,
  h5Root,
  env = process.env,
  maxFileBytes,
  publicPageLimit,
  resolveUserIdForAgentSession,
  resolveWorkspaceRoot = null,
  resolveSessionSnapshot,
  registerPublicHtmlArtifactsForConversation,
  logger = console,
  setIntervalFn = setInterval,
  syncWorkspaceAssetsEnabled = true,
} = {}) {
  let services;
  services = createMindSpaceLocalRuntimeServices({
    pool,
    h5Root,
    env,
    maxFileBytes,
    publicPageLimit,
    resolveUserIdForAgentSession,
    resolveWorkspaceRoot,
    conversationPackageBackfill: ({ user, sessionId, storageRoot, registry }) =>
      backfillConversationPackageArtifacts({
        pool,
        registry,
        storageRoot,
        h5Root,
        user,
        sessionId,
      }),
    conversationPackagePublicHtmlHydrator: createConversationPackagePublicHtmlHydrator({
      h5Root,
      resolveSessionSnapshot,
      registerPublicHtmlArtifactsForConversation,
    }),
    logger,
    syncWorkspaceAssets: syncWorkspaceAssetsEnabled
      ? (targetUserId, options) =>
          services?.assetService?.syncWorkspaceAssets?.(targetUserId, options)
      : null,
  });

  return {
    ...services,
    kind: 'local',
    implementationStatus: 'ready',
    assertReady() {
      return true;
    },
    startPublicationCleanup(intervalMs = 60 * 1000) {
      if (!services.publicationService || typeof setIntervalFn !== 'function') return null;
      const timer = setIntervalFn(async () => {
        try {
          const result = await services.publicationService.cleanupExpiredUnconfirmedPublications();
          if (result.cleaned > 0) {
            logger.log?.(
              `[Publication Cleanup] Auto-privatized ${result.cleaned} expired unconfirmed publications`,
            );
          }
        } catch (error) {
          logger.error?.('[Publication Cleanup Error]', error instanceof Error ? error.message : error);
        }
      }, intervalMs);
      timer?.unref?.();
      return timer;
    },
    startAgentWorker({
      enabled = false,
      concurrency = 1,
      pollMs = 1000,
      staleMs = 5 * 60 * 1000,
      runner,
    } = {}) {
      if (!enabled || !services.agentJobService || !runner || typeof setIntervalFn !== 'function') return null;
      let inFlight = 0;
      let draining = false;
      const drainQueue = async () => {
        if (draining) return;
        draining = true;
        try {
          while (inFlight < concurrency) {
            const claim = await services.agentJobService.claimNextJob();
            if (!claim) break;
            inFlight += 1;
            void runner
              .runJob(claim.jobId, claim)
              .catch((error) => {
                logger.error?.('Agent worker job failed:', error);
              })
              .finally(() => {
                inFlight -= 1;
              });
          }
        } catch (error) {
          logger.error?.('Agent worker drain failed:', error);
        } finally {
          draining = false;
        }
      };
      const workerTimer = setIntervalFn(() => {
        void drainQueue();
      }, pollMs);
      const reaperTimer = setIntervalFn(() => {
        void services.agentJobService
          .reapStaleJobs(staleMs)
          .then((reaped) => {
            if (reaped > 0) {
              logger.warn?.(`Agent worker reaped ${reaped} stale running job(s)`);
            }
          })
          .catch((error) => {
            logger.error?.('Agent worker reaper failed:', error);
          });
      }, Math.min(staleMs, 60_000));
      workerTimer?.unref?.();
      reaperTimer?.unref?.();
      logger.log?.(`Agent job worker enabled (concurrency=${concurrency}, poll=${pollMs}ms)`);
      return { workerTimer, reaperTimer };
    },
    startBackgroundJobs({
      publicationCleanupIntervalMs = 60 * 1000,
      agentWorker,
      agentRunner,
      workspaceMaintenanceEnabled = false,
      startWorkspaceThumbnailWatcher,
      startWorkspaceAssetSyncWatcher,
      publishRoot,
      syncUserWorkspaceByDirKey,
      expireStaleUploadsIntervalMs = 5 * 60 * 1000,
    } = {}) {
      const backgroundJobs = {
        publicationCleanup: this.startPublicationCleanup(publicationCleanupIntervalMs),
        agentWorker: this.startAgentWorker({
          ...agentWorker,
          runner: agentRunner,
        }),
        workspaceMaintenance: null,
      };
      if (!workspaceMaintenanceEnabled) {
        logger.log?.('Workspace maintenance daemons disabled (MEMIND_WORKSPACE_MAINTENANCE=0)');
        return backgroundJobs;
      }
      startWorkspaceThumbnailWatcher?.(publishRoot);
      startWorkspaceAssetSyncWatcher?.({
        publishRoot,
        syncUserWorkspaceByDirKey,
      });
      void services.assetService?.expireStaleUploads?.().catch(() => {});
      backgroundJobs.workspaceMaintenance = {
        expireStaleUploadsTimer:
          setIntervalFn(() => {
            void services.assetService?.expireStaleUploads?.().catch(() => {});
          }, expireStaleUploadsIntervalMs),
      };
      backgroundJobs.workspaceMaintenance.expireStaleUploadsTimer?.unref?.();
      return backgroundJobs;
    },
  };
}