// 为雅思卡片(UserID=2, MiaoguoCardID>=1671933)的 ContentType=2 补充例句
// 例句来源: kylx365_db.Words.ExampleSentence (BookID 212-217, 每词5句)
// 渲染格式参照"其余单词"卡片: 例句：\n[读]英文句[/读]\n中文翻译
import { query } from '../../../src/util/db.js';
import { stringUtils } from '../../../src/util/stringClass.js';

function extractWord(content) {
  // 优先从音频URL提取: gettts?...&text=regent&...
  let m = content.match(/text=([^&]+)/);
  if (m && m[1]) return decodeURIComponent(m[1]).trim();
  // 兜底: "regent 的基本中文释义"
  m = content.match(/^(.*?)\s*的基本中文释义/);
  if (m && m[1]) return m[1].trim();
  return null;
}

// 高亮单词（参照 build.test31.js / 已有雅思卡片格式: [线]word[/线]）
function highlightWord(sentence, word) {
  const forms = stringUtils.getWordAllForms(word);
  let sent = sentence;
  for (const form of forms) {
    if (sent.indexOf(form) >= 0) {
      sent = sent.replace(form, '[线]' + form + '[/线]');
      break;
    }
  }
  return sent;
}

// 渲染格式与"其余单词"雅思卡片一致: 例句：\n英文(高亮单词)\n中文\n\n...
function buildExampleBlock(sentences, word) {
  const lines = sentences.map(s => highlightWord(s.Sentence, word) + '\n' + s.Translate);
  return '\n例句：\n' + lines.join('\n\n') + '\n\n';
}

async function run({ dryRun = false } = {}) {
  // 1) 取目标卡片
  const cards = await query(
    'SELECT MiaoguoCardID FROM kylx365_db.MiaoguoCard where UserID=2 and MiaoguoCardID>=1671933 order by MiaoguoCardID'
  );
  const ids = cards.map(r => r.MiaoguoCardID);
  console.log('目标卡片数:', ids.length);

  let updated = 0, skipped = 0, noWord = 0, noSrc = 0;
  for (const cid of ids) {
    const rows = await query(
      'select Content from kylx365_db.MiaoguoContent where MiaoguoCardID=? and ContentType=2',
      [cid]
    );
    if (!rows.length) { noWord++; console.log('  跳过(无ContentType=2):', cid); continue; }
    let content = rows[0].Content;
    if (content.includes('例句：')) { skipped++; continue; }

    const word = extractWord(content);
    if (!word) { noWord++; console.log('  跳过(无法提取单词):', cid); continue; }

    // 2) 查 Words.ExampleSentence
    const ws = await query(
      'select ExampleSentence from kylx365_db.Words where BookID in (212,213,214,215,216,217) and Word=? limit 1',
      [word]
    );
    if (!ws.length || !ws[0].ExampleSentence) { noSrc++; console.log('  跳过(无例句源):', cid, word); continue; }

    let parsed;
    try { parsed = JSON.parse(ws[0].ExampleSentence); }
    catch (e) { noSrc++; console.log('  跳过(JSON解析失败):', cid, word); continue; }

    const sentences = (parsed.Sentences || []).filter(s => s.Sentence && s.Translate);
    if (!sentences.length) { noSrc++; console.log('  跳过(例句为空):', cid, word); continue; }

    const block = buildExampleBlock(sentences, word);
    const newContent = content.replace(/\s*$/, '') + block;

    if (dryRun) {
      console.log(`\n=== [预览] Card ${cid}  word=${word}  例句数=${sentences.length} ===`);
      console.log(newContent.slice(0, 700));
    } else {
      await query(
        'update kylx365_db.MiaoguoContent set Content=? where MiaoguoCardID=? and ContentType=2',
        [newContent, cid]
      );
      updated++;
      if (updated <= 2) {
        console.log(`\n=== [已写] Card ${cid}  word=${word}  例句数=${sentences.length} ===`);
        console.log(newContent.slice(0, 700));
      }
    }
  }
  console.log(`\n完成. updated=${updated} skipped(已有例句)=${skipped} noWord=${noWord} noSrc=${noSrc}`);
  process.exit(0);
}

const dryRun = process.argv.includes('--dry');
run({ dryRun }).catch(e => { console.error(e); process.exit(1); });