import { describe, it, expect } from 'vitest';
import { readFileSync } from 'node:fs';
import { buildCoverageInput } from './coverage-wiring.mjs';

// Синтетический fs: реальный словарь + поддельные контракты в памяти.
function fakeFsWith(contracts) {
  const files = Object.keys(contracts);
  return {
    readdirSync: () => files,
    readFileSync: (p) => {
      const s = String(p);
      if (s.endsWith('capability-vocabulary.json')) return readFileSync('docs/registry/capability-vocabulary.json', 'utf8');
      const name = files.find((f) => s.endsWith(f));
      return JSON.stringify(contracts[name]);
    },
  };
}
const C = (skill, needs, produces) => ({
  skill, kind: 'own', needs, produces,
  constraints: [], 'preview-form': 'none', defaults: [], 'key-decisions': [], 'acceptance-criteria': [],
});

describe('coverage-wiring — мост охвата (D3)', () => {
  it('полная цепочка (данность→producer→consumer) → ready:true, без дыр', () => {
    const fs = fakeFsWith({
      'a.contract.json': C('a', ['running-portal'], ['dast-report']),
      'b.contract.json': C('b', ['dast-report'], ['go-live-verdict']),
    });
    const out = buildCoverageInput({ recommendedSkills: ['a', 'b'], fsImpl: fs });
    expect(out.ready).toBe(true);
    expect(out.holes).toEqual([]);
    expect(out.cards.map((c) => c.skill).sort()).toEqual(['a', 'b']);
  });

  it('набор с непокрытой нуждой → ready:false, дыра видна', () => {
    const fs = fakeFsWith({ 'b.contract.json': C('b', ['dast-report'], ['go-live-verdict']) });
    const out = buildCoverageInput({ recommendedSkills: ['b'], fsImpl: fs });
    expect(out.ready).toBe(false);
    expect(out.holes.length).toBeGreaterThan(0);
    expect(out.holes.some((h) => h.need === 'dast-report')).toBe(true);
  });

  it('cards несут {skill, needs, produces}', () => {
    const fs = fakeFsWith({ 'a.contract.json': C('a', ['running-portal'], ['dast-report']) });
    const out = buildCoverageInput({ recommendedSkills: ['a'], fsImpl: fs });
    expect(out.cards).toEqual([{ skill: 'a', needs: ['running-portal'], produces: ['dast-report'] }]);
  });

  it('неизвестный рекомендованный навык не попадает в cards и не роняет мост', () => {
    const fs = fakeFsWith({ 'a.contract.json': C('a', ['running-portal'], ['dast-report']) });
    const out = buildCoverageInput({ recommendedSkills: ['a', 'nonexistent'], fsImpl: fs });
    expect(out.cards.map((c) => c.skill)).toEqual(['a']);
  });

  it('D5: замок словаря активен на живом пути — неизвестный токен в errors', () => {
    const fs = fakeFsWith({ 'bad.contract.json': C('bad', ['ghost-token-xyz'], ['running-portal']) });
    const out = buildCoverageInput({ recommendedSkills: ['bad'], fsImpl: fs });
    const err = out.errors.find((e) => e.skill === 'bad');
    expect(err).toBeTruthy();
    expect(err.errors.join(' ')).toMatch(/ghost-token-xyz/);
  });
});