import { describe, it, expect } from 'vitest';
import { detectMethodDirected, loadKnownNodes } from './observer-routing-detector.mjs';

const NODES = ['brainstorming', 'discovery-interview', 'systematic-debugging'];

describe('detectMethodDirected', () => {
  it('detects a directive verb followed by a node name', () => {
    expect(detectMethodDirected('запусти discovery-interview по этой фиче', NODES)).toEqual({
      directed: true,
      node: 'discovery-interview',
    });
  });

  it('detects "используй X"', () => {
    expect(detectMethodDirected('используй systematic-debugging здесь', NODES).directed).toBe(true);
  });

  it('detects a /slash-command form', () => {
    expect(detectMethodDirected('сделай это через /brainstorming', NODES)).toEqual({
      directed: true,
      node: 'brainstorming',
    });
  });

  it('does NOT flag a bare node mention without a directive verb', () => {
    expect(detectMethodDirected('почему ты выбрал brainstorming, а не план?', NODES).directed).toBe(false);
  });

  it('does NOT flag a prompt with no node reference', () => {
    expect(detectMethodDirected('добавь колонку Город в таблицу', NODES).directed).toBe(false);
  });

  it('is empty-input safe', () => {
    expect(detectMethodDirected('', NODES).directed).toBe(false);
    expect(detectMethodDirected(null, []).directed).toBe(false);
  });
});

describe('loadKnownNodes', () => {
  it('loads names, skips comments and blank lines', () => {
    const nodes = loadKnownNodes('tools/observer-known-nodes.txt');
    expect(nodes).toContain('brainstorming');
    expect(nodes).toContain('discovery-interview');
    expect(nodes.every((n) => !n.startsWith('#') && n.length > 0)).toBe(true);
  });

  it('returns an empty array for a missing file', () => {
    expect(loadKnownNodes('tools/does-not-exist.txt')).toEqual([]);
  });
});