import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { mkdtempSync, rmSync } from 'fs';
import { tmpdir } from 'os';
import { join } from 'path';
import { getNextId } from '../src/core/counter.js';

describe('counter', () => {
  let cwd: string;

  beforeEach(() => {
    cwd = mkdtempSync(join(tmpdir(), 'agenthub-'));
  });

  afterEach(() => {
    rmSync(cwd, { recursive: true, force: true });
  });

  it('generates sequential task ids', () => {
    expect(getNextId(cwd, 'task')).toBe('TSK-0001');
    expect(getNextId(cwd, 'task')).toBe('TSK-0002');
  });

  it('keeps counters separate by type', () => {
    expect(getNextId(cwd, 'handoff')).toBe('HOF-0001');
    expect(getNextId(cwd, 'task')).toBe('TSK-0001');
    expect(getNextId(cwd, 'handoff')).toBe('HOF-0002');
  });
});