// BSE 股票代码获取脚本
// 数据源: Alice Blue Broker CSV (每日更新, 免费, 无需注册)

const url = 'https://v2api.aliceblueonline.com/restpy/static/contract_master/BSE.csv';

const res = await fetch(url);
const csv = await res.text();

const lines = csv.split('\n').filter(Boolean);
const stocks = [];

for (let i = 1; i < lines.length; i++) {
  const cols = lines[i].split(',');
  if (cols.length < 6) continue;

  const symbol = cols[2].trim();        // Symbol (ticker)
  const token = cols[3].trim();         // Token (BSE security code)
  const type = cols[4].trim();          // Instrument type

  if (type !== 'E') continue;   // Equity only

  stocks.push({ c: token, n: symbol });
}

// 输出格式
process.stdout.write(`var s = new Array();\n`);
for (let i = 0; i < stocks.length; i++) {
  process.stdout.write(`s[${i}] = { c: "${stocks[i].c}", n: "${stocks[i].n}" };\n`);
}

console.error(`\n总计: ${stocks.length} 只 BSE 股票`);