import { test } from 'node:test';
import assert from 'node:assert/strict';
import {
  parseJsonFromLlmText,
  validateAndNormalizeDraft,
} from './documentGenService.js';

test('parseJsonFromLlmText: чистый JSON', () => {
  const o = parseJsonFromLlmText('{"title":"T","questions":[{"text":"Q","options":[{"text":"a","isCorrect":true},{"text":"b","isCorrect":false}]}]}');
  assert.equal(o.title, 'T');
  assert.equal(o.questions.length, 1);
});

test('parseJsonFromLlmText: JSON в markdown-заборе', () => {
  const raw = '```json\n{"title":"X","questions":[{"text":"1","options":[{"text":"+","isCorrect":true},{"text":"-","isCorrect":false}]}]}\n```';
  const o = parseJsonFromLlmText(raw);
  assert.equal(o.title, 'X');
});

test('parseJsonFromLlmText: невалидный JSON — ошибка', () => {
  assert.throws(
    () => parseJsonFromLlmText('not json'),
    /JSON/i
  );
});

test('validateAndNormalizeDraft: валидный черновик', () => {
  const d = validateAndNormalizeDraft({
    title: ' Экзамен ',
    description: '  оп  ',
    questions: [
      {
        text: '2+2?',
        hasMultipleAnswers: false,
        options: [
          { text: '4', isCorrect: true },
          { text: '5', isCorrect: false },
        ],
      },
    ],
  });
  assert.equal(d.title, 'Экзамен');
  assert.equal(d.description, 'оп');
  assert.equal(d.questions[0].options.length, 2);
});

test('validateAndNormalizeDraft: нет title', () => {
  assert.throws(
    () =>
      validateAndNormalizeDraft({
        questions: [
          {
            text: 'Q',
            options: [
              { text: 'a', isCorrect: true },
              { text: 'b', isCorrect: false },
            ],
          },
        ],
      }),
    /title/i
  );
});