/**
 * 测试BIN分布
 */
import pkg from './src/tools/card/CardGeneratorTool.js';
const { CardGeneratorTool } = pkg;

async function test() {
  console.log('生成1000张卡，分析BIN分布...\n');
  
  const cardGen = new CardGeneratorTool();
  await cardGen.initialize({});
  
  const cards = await cardGen.generateBatch(1000, 'unionpay');
  
  // 统计BIN分布
  const binCounts = {};
  cards.forEach(card => {
    const bin = card.number.slice(0, 13);
    binCounts[bin] = (binCounts[bin] || 0) + 1;
  });
  
  // 排序
  const sorted = Object.entries(binCounts)
    .sort((a, b) => b[1] - a[1]);
  
  console.log('=== BIN分布（前10个） ===\n');
  sorted.slice(0, 10).forEach(([bin, count], i) => {
    const percent = (count / 1000 * 100).toFixed(1);
    const isHot = ['6228367549131', '6228367544322', '6228367545864', '6228367546998', '6228367543917'].includes(bin);
    const mark = isHot ? '🔥' : '  ';
    console.log(`${i + 1}. ${mark} ${bin}: ${count}次 (${percent}%)`);
  });
  
  // 统计热门BIN的总占比
  const hotBins = ['6228367549131', '6228367544322', '6228367545864', '6228367546998', '6228367543917'];
  const hotCount = hotBins.reduce((sum, bin) => sum + (binCounts[bin] || 0), 0);
  const hotPercent = (hotCount / 1000 * 100).toFixed(1);
  
  console.log(`\n=== 热门BIN统计 ===`);
  console.log(`热门BIN总占比: ${hotCount}/1000 (${hotPercent}%)`);
  console.log(`期望占比: ~${(5 * 5 / (5 * 5 + 60 * 1) * 100).toFixed(1)}% (权重5 vs 权重1)`);
}

test().catch(err => {
  console.error('错误:', err.message);
  console.error(err.stack);
});