import { describe, it, expect } from 'vitest';
import { checkCoverage, checkRegistration } from './observer-coverage-checker.mjs';

describe('checkCoverage', () => {
  it('flags recent commits but zero episodes', () => {
    const r = checkCoverage(0, 7);
    expect(r.ok).toBe(false);
    expect(r.detail).toContain('0 observer episodes');
  });

  it('is ok when episodes exist', () => {
    expect(checkCoverage(5, 7).ok).toBe(true);
  });

  it('is ok when there is no recent git activity', () => {
    expect(checkCoverage(0, 0).ok).toBe(true);
  });
});

describe('checkRegistration', () => {
  const goodSettings = {
    hooks: { Stop: [{ hooks: [{ type: 'command', command: 'node tools/observer-stop-hook.mjs' }] }] },
  };

  it('is ok when the Stop-hook is registered and post-commit exists', () => {
    const r = checkRegistration(goodSettings, true);
    expect(r.ok).toBe(true);
  });

  it('flags a missing Stop-hook registration', () => {
    const r = checkRegistration({ hooks: { Stop: [] } }, true);
    expect(r.ok).toBe(false);
    expect(r.detail).toContain('observer-stop-hook NOT registered');
  });

  it('flags a missing post-commit hook', () => {
    const r = checkRegistration(goodSettings, false);
    expect(r.ok).toBe(false);
    expect(r.detail).toContain('post-commit');
  });

  it('handles an empty settings object', () => {
    expect(checkRegistration({}, false).ok).toBe(false);
  });
});