import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { validateBriefContent } from '../../lib/validators/brief-validator.mjs';

const GOOD_BRIEF = `---
type: ultrabrief
brief_version: "2.0"
created: 2026-04-30
task: "Add JWT auth to API"
slug: jwt-auth
project_dir: .claude/projects/2026-04-30-jwt-auth/
research_topics: 2
research_status: pending
auto_research: false
interview_turns: 5
source: interview
---

# Task: JWT auth

## Intent

Why this matters.

## Goal

What success looks like.

## Success Criteria

- All tests pass.
`;

test('validateBrief — happy path', () => {
  const r = validateBriefContent(GOOD_BRIEF, { strict: true });
  assert.equal(r.valid, true, JSON.stringify(r.errors));
});

test('validateBrief — wrong type rejected', () => {
  const t = GOOD_BRIEF.replace('type: ultrabrief', 'type: notabrief');
  const r = validateBriefContent(t);
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'BRIEF_WRONG_TYPE'));
});

test('validateBrief — missing required field', () => {
  const t = GOOD_BRIEF.replace(/^research_topics: 2\n/m, '');
  const r = validateBriefContent(t);
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'BRIEF_MISSING_FIELD' && /research_topics/.test(e.message)));
});

test('validateBrief — bad research_status value', () => {
  const t = GOOD_BRIEF.replace('research_status: pending', 'research_status: maybe');
  const r = validateBriefContent(t);
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'BRIEF_BAD_STATUS'));
});

test('validateBrief — state machine: research_topics > 0 + skipped without partial = error', () => {
  const t = GOOD_BRIEF.replace('research_status: pending', 'research_status: skipped');
  const r = validateBriefContent(t);
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'BRIEF_STATE_INCOHERENT'));
});

test('validateBrief — state machine: skipped + brief_quality: partial = warning only', () => {
  const t = GOOD_BRIEF
    .replace('research_status: pending', 'research_status: skipped')
    .replace('source: interview', 'source: interview\nbrief_quality: partial');
  const r = validateBriefContent(t);
  assert.equal(r.valid, true, JSON.stringify(r.errors));
  assert.ok(r.warnings.find(w => w.code === 'BRIEF_PARTIAL_SKIPPED'));
});

test('validateBrief — strict requires body sections', () => {
  const t = GOOD_BRIEF.replace(/## Intent\n\nWhy this matters\.\n\n/, '');
  const r = validateBriefContent(t, { strict: true });
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'BRIEF_MISSING_SECTION'));
});

test('validateBrief — soft demotes section errors to warnings', () => {
  const t = GOOD_BRIEF.replace(/## Goal\n\nWhat success looks like\.\n\n/, '');
  const r = validateBriefContent(t, { strict: false });
  assert.equal(r.valid, true);
  assert.ok(r.warnings.find(w => w.code === 'BRIEF_MISSING_SECTION'));
});

test('validateBrief — missing frontmatter is hard error', () => {
  const r = validateBriefContent('# just markdown\n\nno frontmatter\n');
  assert.equal(r.valid, false);
  assert.ok(r.errors.find(e => e.code === 'FM_MISSING'));
});