/**
 * Task 2 — ensureSystemRoots (TDD).
 *
 * Fixture convention: makePort from helpers/factories (async DB insert);
 * TEST_USER_ID resolved once via beforeAll from a seeded user — same pattern
 * as document-folders-crud.test.ts and alerts-tenant-isolation.test.ts.
 */

import { describe, it, expect, beforeAll, beforeEach } from 'vitest';
import { and, eq } from 'drizzle-orm';

import { db } from '@/lib/db';
import { documentFolders } from '@/lib/db/schema/documents';
import { user } from '@/lib/db/schema/users';
import { ensureSystemRoots } from '@/lib/services/document-folders.service';
import { makePort } from '../helpers/factories';

let TEST_USER_ID = '';

beforeAll(async () => {
  const [u] = await db.select({ id: user.id }).from(user).limit(1);
  if (!u) throw new Error('No user available; run pnpm db:seed first');
  TEST_USER_ID = u.id;
});

describe('document-folders service · ensureSystemRoots', () => {
  let portId: string;

  beforeEach(async () => {
    const port = await makePort();
    portId = port.id;
    await db.delete(documentFolders).where(eq(documentFolders.portId, portId));
  });

  it('creates Clients, Companies, and Yachts root folders with system_managed=true', async () => {
    await ensureSystemRoots(portId, TEST_USER_ID);
    const rows = await db
      .select()
      .from(documentFolders)
      .where(and(eq(documentFolders.portId, portId), eq(documentFolders.entityType, 'root')));
    expect(rows.map((r) => r.name).sort()).toEqual(['Clients', 'Companies', 'Yachts']);
    for (const r of rows) {
      expect(r.systemManaged).toBe(true);
      expect(r.parentId).toBeNull();
      expect(r.entityId).toBeNull();
    }
  });

  it('is idempotent — second call does not create duplicates', async () => {
    await ensureSystemRoots(portId, TEST_USER_ID);
    await ensureSystemRoots(portId, TEST_USER_ID);
    const rows = await db
      .select()
      .from(documentFolders)
      .where(and(eq(documentFolders.portId, portId), eq(documentFolders.entityType, 'root')));
    expect(rows).toHaveLength(3);
  });

  it('returns the three root rows in a stable order (Clients, Companies, Yachts)', async () => {
    const roots = await ensureSystemRoots(portId, TEST_USER_ID);
    expect(roots.map((r) => r.name)).toEqual(['Clients', 'Companies', 'Yachts']);
  });
});