import { test } from 'node:test';
import assert from 'node:assert/strict';
import { deriveVerdict, isBlockingFinding, normalizeReview } from '../src/lib/verdict.js';

const F = (over = {}) => ({
  title: 't', file: 'f.js', line: 1,
  severity: 'low', confidence: 'plausible', axis: 'style', detail: 'd', ...over
});

test('confirmed critical correctness blocks', () => {
  assert.equal(isBlockingFinding(F({ severity: 'critical', confidence: 'confirmed', axis: 'correctness' })), true);
});

test('confirmed high security blocks', () => {
  assert.equal(isBlockingFinding(F({ severity: 'high', confidence: 'confirmed', axis: 'security' })), true);
});

test('plausible critical does NOT block', () => {
  assert.equal(isBlockingFinding(F({ severity: 'critical', confidence: 'plausible', axis: 'correctness' })), false);
});

test('confirmed critical style does NOT block', () => {
  assert.equal(isBlockingFinding(F({ severity: 'critical', confidence: 'confirmed', axis: 'style' })), false);
});

test('confirmed medium does NOT block', () => {
  assert.equal(isBlockingFinding(F({ severity: 'medium', confidence: 'confirmed', axis: 'security' })), false);
});

test('untagged axis + confirmed critical blocks (conservative)', () => {
  assert.equal(isBlockingFinding(F({ severity: 'critical', confidence: 'confirmed', axis: null })), true);
});

test('verdict fail on blocking finding', () => {
  const v = deriveVerdict({ findings: [F({ severity: 'high', confidence: 'confirmed', axis: 'correctness' })] });
  assert.equal(v, 'fail');
});

test('verdict warn on plausible high', () => {
  const v = deriveVerdict({ findings: [F({ severity: 'high', confidence: 'plausible', axis: 'correctness' })] });
  assert.equal(v, 'warn');
});

test('verdict warn on confirmed medium', () => {
  const v = deriveVerdict({ findings: [F({ severity: 'medium', confidence: 'confirmed', axis: 'security' })] });
  assert.equal(v, 'warn');
});

test('verdict pass with only low findings', () => {
  const v = deriveVerdict({ findings: [F({ severity: 'low' })] });
  assert.equal(v, 'pass');
});

test('verdict pass with no findings', () => {
  assert.equal(deriveVerdict({ findings: [] }), 'pass');
  assert.equal(deriveVerdict({}), 'pass');
});

test('normalizeReview clamps scores and overrides model verdict', () => {
  const r = normalizeReview({
    axes: { correctness: { score: 250, rationale: 'x' } },
    overall: -5, grade: 'z',
    findings: [{ title: 'boom', severity: 'CRITICAL', confidence: 'Confirmed', axis: 'Correctness', file: 'a.js', line: '7' }],
    verdict: 'pass' // model says pass, but blocking finding exists
  });
  assert.equal(r.axes.correctness.score, 100);
  assert.equal(r.axes.security.score, 0); // missing axis defaults
  assert.equal(r.overall, 0);
  assert.equal(r.grade, 'C');
  assert.equal(r.findings[0].severity, 'critical');
  assert.equal(r.findings[0].line, 7);
  assert.equal(r.verdict, 'fail'); // service-side derivation is authoritative
});

test('normalizeReview tolerates junk', () => {
  assert.equal(normalizeReview(null), null);
  const r = normalizeReview({});
  assert.equal(r.verdict, 'pass');
  assert.equal(r.findings.length, 0);
});

// --- applyTruncationCap ---
import { applyTruncationCap } from '../src/lib/verdict.js';

test('truncation caps pass at warn', () => {
  const r = { verdict: 'pass' };
  applyTruncationCap(r, true);
  assert.equal(r.verdict, 'warn');
});

test('truncation leaves warn as warn', () => {
  const r = { verdict: 'warn' };
  applyTruncationCap(r, true);
  assert.equal(r.verdict, 'warn');
});

test('truncation does not downgrade fail', () => {
  const r = { verdict: 'fail' };
  applyTruncationCap(r, true);
  assert.equal(r.verdict, 'fail');
});

test('no truncation leaves pass untouched', () => {
  const r = { verdict: 'pass' };
  applyTruncationCap(r, false);
  assert.equal(r.verdict, 'pass');
});