import test from 'node:test';
import assert from 'node:assert/strict';
import { parseIflytekResult } from '../src/result-parser.mjs';

function lattice(text, { bg, ed, role }) {
  return {
    json_1best: JSON.stringify({
      st: {
        bg: String(bg),
        ed: String(ed),
        rl: role,
        rt: [{ ws: [...text].map(character => ({ cw: [{ w: character }] })) }],
      },
    }),
  };
}

test('解析正文、时间和说话人，并合并连续同一说话人', () => {
  const raw = JSON.stringify({
    lattice: [
      lattice('你好', { bg: 0, ed: 500, role: 1 }),
      lattice('世界', { bg: 500, ed: 900, role: 1 }),
      lattice('您好', { bg: 900, ed: 1300, role: 2 }),
    ],
  });
  const result = parseIflytekResult(raw);
  assert.equal(result.text, '你好 世界 您好');
  assert.deepEqual(result.segments, [
    { text: '你好世界', startMs: 0, endMs: 900, speakerId: '1' },
    { text: '您好', startMs: 900, endMs: 1300, speakerId: '2' },
  ]);
});

test('损坏结果安全返回空正文', () => {
  assert.deepEqual(parseIflytekResult('{bad json'), { text: '', segments: [] });
});