/* 成交明细抓取脚本 */
(function(){
  var tables=document.querySelectorAll('table');if(!tables.length){alert('未找到表格');return;}
  var tbl=Array.from(tables).sort(function(a,b){return b.rows.length-a.rows.length;})[0];
  var dataRows=Array.from(tbl.tBodies&&tbl.tBodies[0]?tbl.tBodies[0].rows:tbl.querySelectorAll('tr')).filter(function(r){return r.parentNode.tagName!=='THEAD'&&r.parentNode.tagName!=='TFOOT';});
  var header=[];if(tbl.tHead&&tbl.tHead.rows[0]){var ths=tbl.tHead.rows[0].querySelectorAll('th');if(ths.length)header=Array.from(ths).map(function(c){return c.innerText.trim();});}
  var data=[];dataRows.forEach(function(r){var tds=r.querySelectorAll('td');if(!tds.length)tds=r.querySelectorAll('th');if(tds.length)data.push(Array.from(tds).map(function(c){return c.innerText.trim();}));});
  if(!data.length){alert('无数据');return;}if(!header.length)header=data[0].map(function(_,i){return '列'+(i+1);});
  var ai=-1,keys=['成交额','成交金额'];for(var i=0;i=0){ai=i;break;}if(ai<0){var b=-1,bs=-9e9;for(var c=0;cdata.length/2&&s>bs){bs=s;b=c;}}ai=b;}
  data.sort(function(a,b){return(parseFloat(b[ai])||0)-(parseFloat(a[ai])||0);});
  var total=data.reduce(function(s,r){return s+(parseFloat(r[ai])||0);},0);
  var TAB=String.fromCharCode(9),NL=String.fromCharCode(10);
  var tsv=[header.join(TAB)].concat(data.map(function(r){return r.join(TAB);})).join(NL);
  navigator.clipboard.writeText(tsv).then(function(){alert('✅ 已复制 '+data.length+' 条\n成交额合计: '+total.toFixed(4));})
  .catch(function(){var ta=document.createElement('textarea');ta.value=tsv;document.body.appendChild(ta);ta.select();document.execCommand('copy');document.body.removeChild(ta);alert('✅ 已复制 '+data.length+' 条');});
})();