/**
 * 验证「把附件地址拼进 question 文本」这条链路（方案②）。
 *
 * 背景（2026-09-18）：新接口 /api/chat 只收 {thread_id, question}，多字段 422，
 * 旧协议的 transmission.files 发不出去；改为把 OSS 地址拼进 question。
 *
 * 不变量：
 *   ① 没有附件时**必须原样返回**问题（不能凭空多个换行 —— 那会改变所有普通提问）
 *   ② 有附件时：原文在前、每条 URL 各占一行、**不加**任何自定义措辞
 *   ③ 空/无效 URL 被过滤（上传失败的文件不该混进问题里）
 *
 * 怎么跑（在项目根目录）：
 *   npx esbuild harness/tools/_entry-attachments.ts --bundle --format=esm \
 *     --outfile=harness/tools/_attachments.mjs
 *   node harness/tools/verify-attachment-question.mjs
 */

import { buildQuestionWithAttachments } from './_attachments.mjs';

let pass = 0;
let fail = 0;
const check = (name, cond, extra = '') => {
  if (cond) {
    pass++;
    console.log('  ok   ' + name);
  } else {
    fail++;
    console.log('  FAIL ' + name + '  ' + extra);
  }
};

const Q = '帮我看看这份材料符合条件吗';
const U1 = 'https://bucket.oss-cn-shanghai.aliyuncs.com/upload/a.png';
const U2 = 'https://bucket.oss-cn-shanghai.aliyuncs.com/upload/b.pdf';

console.log('【1】没有附件时：必须原样返回');
check('undefined → 原文', buildQuestionWithAttachments(Q, undefined) === Q);
check('null → 原文', buildQuestionWithAttachments(Q, null) === Q);
check('空数组 → 原文', buildQuestionWithAttachments(Q, []) === Q);
check('全是空串 → 原文（不要多个换行）', buildQuestionWithAttachments(Q, ['', '   ', null]) === Q, JSON.stringify(buildQuestionWithAttachments(Q, ['', '   ', null])));

console.log('\n【2】有附件时：原文在前、URL 各一行');
check('单个附件', buildQuestionWithAttachments(Q, [U1]) === `${Q}\n${U1}`, JSON.stringify(buildQuestionWithAttachments(Q, [U1])));
check('多个附件按顺序', buildQuestionWithAttachments(Q, [U1, U2]) === `${Q}\n${U1}\n${U2}`);
check('**原文完整保留在前面**', buildQuestionWithAttachments(Q, [U1]).startsWith(Q + '\n'));
check('**不添加自定义措辞**（只有原文与 URL）', !/附件|文件|attachment/i.test(buildQuestionWithAttachments(Q, [U1]).slice(Q.length)));

console.log('\n【3】脏数据过滤');
check('混入空值只保留有效 URL', buildQuestionWithAttachments(Q, [U1, '', null, U2]) === `${Q}\n${U1}\n${U2}`);
check('URL 前后空格被去掉', buildQuestionWithAttachments(Q, [`  ${U1}  `]) === `${Q}\n${U1}`);

console.log(`\n===== 通过 ${pass} 项，失败 ${fail} 项 =====`);
process.exit(fail ? 1 : 0);