import { describe, expect, it } from 'vitest';
import { analyseCopyPatterns } from '../src/content/heuristics';
import { evidenceFromHeuristics, heuristicScore } from '../src/background/heuristics';

describe('page heuristics', () => {
  it('finds dense buzzwords and em-dash cadence without declaring an AI verdict', () => {
    const text = 'Supercharge your workflow with our world-class, enterprise-grade platform — move faster — work smarter — without compromise.';
    const findings = analyseCopyPatterns(text);
    expect(findings.map((finding) => finding.ruleId)).toEqual(expect.arrayContaining([
      'copy-marketing-buzzwords',
      'copy-em-dash-cadence'
    ]));
    expect(evidenceFromHeuristics(findings).every((item) => item.verdict === 'unknown')).toBe(true);
  });

  it('adds a diversity point when independent categories agree', () => {
    const evidence = evidenceFromHeuristics([
      { ruleId: 'one', category: 'visual', title: 'One', detail: 'One', score: 2, occurrences: 1 },
      { ruleId: 'two', category: 'layout', title: 'Two', detail: 'Two', score: 3, occurrences: 1 }
    ]);
    expect(heuristicScore(evidence)).toBe(6);
  });

  it('ignores ordinary direct prose', () => {
    expect(analyseCopyPatterns('The archive contains monthly invoices. Select a year, then download the required PDF.')).toEqual([]);
  });
});