/**
 * Test fixture: an on_restore hook in the celilo-mgmt staging shape, minus
 * everything the real one owns but the staging itself. Copies the artifact's
 * celilo.db into restore_dir/system/ so the Phase 4 wrapper's
 * applyStagedSystemFiles has something to swap.
 */

import { cpSync, existsSync, mkdirSync } from 'node:fs';
import { join } from 'node:path';
import { defineHook } from '@celilo/capabilities';

export default defineHook({
  hook: 'on_restore',
  requires: [],
  optional: [],
  handler: async (ctx) => {
    const restoreDir = (ctx as unknown as { restore_dir: string }).restore_dir;
    const systemDir = join(restoreDir, 'system');
    mkdirSync(systemDir, { recursive: true });
    const artifactDb = join(restoreDir, 'celilo.db');
    if (existsSync(artifactDb)) {
      cpSync(artifactDb, join(systemDir, 'celilo.db'));
    }
    return { restored_items: 1 };
  },
});