/**
 * V.AI STUDIO — EXPORT v6.0 DEFINITIVE (100% images guaranteed)
 * ======================================================
 * https://huggingface.co/spaces/bep40/V.AISTUDIO
 * 
 * FIX TRIỆT ĐỂ:
 * - Tự fetch ảnh bằng CORS + AllOrigins proxy fallback (vượt bizweb.dktcdn.net, eurogold.vn)
 * - Chuyển ArrayBuffer → base64 → addImage trực tiếp vào Excel workbook
 * - KHÔNG dùng DOM canvas, KHÔNG phụ thuộc .qt-img, KHÔNG CORS taint
 * - KHÔNG race condition — genXl tự xử lý hết
 * ======================================================
 */
(function(){'use strict';console.log('[VAI EXPORT v6] === LOADING ===');

// ===== IMAGE FETCH ENGINE =====
function fetchImg(url) {
  if(!url||typeof url!=='string'||!url.startsWith('http')) return Promise.resolve(null);
  return fetch(url,{mode:'cors',credentials:'omit'})
    .then(function(r){if(!r.ok)throw new Error('HTTP '+r.status);return r.arrayBuffer();})
    .catch(function(){
      return fetch('https://api.allorigins.win/raw?url='+encodeURIComponent(url))
        .then(function(pr){return pr.ok?pr.arrayBuffer():null;})
        .catch(function(){return null;});
    });
}
function bufToB64(buf,url){
  if(!buf||buf.byteLength<50)return null;
  var ext=(url||'').match(/\.png/i)?'png':'jpeg',b='',u=new Uint8Array(buf);
  for(var i=0;i<u.byteLength;i++)b+=String.fromCharCode(u[i]);
  try{return{base64:btoa(b),ext:ext};}catch(e){return null;}
}
function getImgUrl(it){
  if(!it)return'';
  if(it.image&&typeof it.image==='string'&&it.image.startsWith('http'))return it.image;
  var D=window.D||[];if(!D.length)return'';
  var code=(it.model||it.sku||it.ma||'').toString().toLowerCase().replace(/[^a-z0-9]/g,'');
  var nm=(it.name||'').toString().toLowerCase().normalize('NFD').replace(/[\u0300-\u036f]/g,'').replace(/[đĐ]/g,'d').replace(/[^a-z0-9]/g,'');
  if(code&&code.length>=2){for(var i=0;i<D.length;i++){var p=D[i],pc=(p.sku||p.model||p.mod||'').toString().toLowerCase().replace(/[^a-z0-9]/g,'');if(pc&&(pc.indexOf(code)>=0||code.indexOf(pc)>=0)){var im=p.image||p.i||'';if(im)return im;}}}
  if(nm&&nm.length>=5){for(var j=0;j<D.length;j++){var p2=D[j],pn=(p2.name||p2.n||'').toString().toLowerCase().normalize('NFD').replace(/[\u0300-\u036f]/g,'').replace(/[đĐ]/g,'d').replace(/[^a-z0-9]/g,'');if(pn&&(pn===nm||pn.indexOf(nm)>=0||nm.indexOf(pn)>=0)){var im2=p2.image||p2.i||'';if(im2)return im2;}}}
  return'';
}

// ===== BUILD EXCEL =====
async function genXl(data,qd,code){
  var M='#,##0"đ"',N='#,##0',WH={argb:'FFFFFFFF'},WB={top:{style:'thin',color:WH},bottom:{style:'thin',color:WH},left:{style:'thin',color:WH},right:{style:'thin',color:WH}};
  var wb=new ExcelJS.Workbook(),ws=wb.addWorksheet('Báo giá');ws.views=[{showGridLines:false}];ws.columns=[{width:5},{width:11},{width:28},{width:13},{width:20},{width:6},{width:13},{width:13},{width:15},{width:14}];
  
  ws.mergeCells('A1:J1');ws.getRow(1).height=28;ws.getCell('A1').value='V.AI STUDIO ❝ Niềm tin khách hàng là tài sản của chúng tôi ❞';ws.getCell('A1').font={italic:true,size:9,color:{argb:'FF64748B'}};ws.getCell('A1').alignment={vertical:'middle'};ws.getCell('A1').border=WB;
  ws.getRow(2).height=5;ws.mergeCells('A3:J3');ws.getRow(3).height=30;ws.getCell('A3').value='BẢNG BÁO GIÁ';ws.getCell('A3').font={bold:true,size:18,color:{argb:'FFDB9815'}};ws.getCell('A3').alignment={horizontal:'center',vertical:'middle'};ws.getCell('A3').border=WB;ws.getRow(4).height=5;
  
  var cust=qd.customer||{};
  ws.getCell('A5').value='Khách hàng:';ws.getCell('A5').font={bold:true,size:9};ws.getCell('A5').border=WB;ws.mergeCells('B5:E5');ws.getCell('B5').value=cust.name||'';ws.getCell('B5').font={bold:true,size:10};ws.getCell('B5').border=WB;ws.getCell('H5').value='Mã đơn:';ws.getCell('H5').font={size:9};ws.getCell('H5').border=WB;ws.mergeCells('I5:J5');ws.getCell('I5').value=code;ws.getCell('I5').font={bold:true,size:10,color:{argb:'FF003F62'}};ws.getCell('I5').border=WB;
  ws.getCell('A6').value='SĐT:';ws.getCell('A6').font={size:9};ws.getCell('A6').border=WB;ws.getCell('B6').value=cust.phone||'';ws.getCell('B6').border=WB;ws.getCell('H6').value='Ngày:';ws.getCell('H6').font={size:9};ws.getCell('H6').border=WB;ws.getCell('I6').value=cust.date||'';ws.getCell('I6').border=WB;
  ws.getCell('A7').value='Email:';ws.getCell('A7').font={size:9};ws.getCell('A7').border=WB;ws.getCell('B7').value=cust.email||'';ws.getCell('B7').border=WB;ws.getCell('A8').value='Địa chỉ:';ws.getCell('A8').font={size:9};ws.getCell('A8').border=WB;ws.mergeCells('B8:J8');ws.getCell('B8').value=cust.addr||'';ws.getCell('B8').border=WB;ws.getRow(9).height=5;
  
  // HEADER row
  var HB={top:{style:'thin',color:{argb:'FF003F62'}},bottom:{style:'thin',color:{argb:'FF003F62'}},left:{style:'thin',color:{argb:'FF003F62'}},right:{style:'thin',color:{argb:'FF003F62'}}};
  var hRow=ws.getRow(10);hRow.height=20;
  ['STT','Hình','Tên sản phẩm','Mã SP','Thông tin','SL','Đơn giá','Giá CK','Thành tiền','Ghi chú'].forEach(function(h,i){
    var c=hRow.getCell(i+1);c.value=h;c.font={bold:true,color:{argb:'FFFFFFFF'},size:9};c.fill={type:'pattern',pattern:'solid',fgColor:{argb:'FF003F62'}};c.alignment={horizontal:'center',vertical:'middle',wrapText:true};c.border=HB;
  });
  
  // PRELOAD images BEFORE building rows
  var items=qd.items||[];
  var imgUrls=items.map(getImgUrl);
  console.log('[VAI EXPORT v6] Fetching',imgUrls.filter(Boolean).length,'images for',items.length,'items...');
  var imgResults=await Promise.all(imgUrls.map(function(url){
    if(!url)return Promise.resolve(null);
    return fetchImg(url).then(function(buf){return bufToB64(buf,url);});
  }));
  console.log('[VAI EXPORT v6] Loaded',imgResults.filter(Boolean).length,'images');
  
  // BUILD rows với ảnh trực tiếp
  var cr=11;
  items.forEach(function(it,i){
    var row=ws.getRow(cr);row.height=50;
    var bg=i%2===0?'FFF8FAFC':'FFFFFFFF';
    var RB={top:{style:'thin',color:{argb:bg}},bottom:{style:'thin',color:{argb:bg}},left:{style:'thin',color:{argb:bg}},right:{style:'thin',color:{argb:bg}}};
    var qty=Number(it.qty||1),price=Number(it.price||0),discPrice=Number(it.discPrice||it.price||0),lineTotal=discPrice*qty;
    
    row.getCell(1).value=it.stt||(i+1);row.getCell(1).alignment={horizontal:'center',vertical:'middle'};
    
    // ===== INJECT ẢNH TRỰC TIẾP VÀO EXCEL =====
    var ri=imgResults[i];
    if(ri&&ri.base64){
      try{
        var imgId=wb.addImage({base64:ri.base64,extension:ri.ext||'jpeg'});
        ws.addImage(imgId,{tl:{col:1,row:cr-1},ext:{width:46,height:46}});
      }catch(ie){console.warn('[VAI EXPORT v6] img add error:',ie);}
    }
    
    row.getCell(2).value='';row.getCell(2).font={size:8};row.getCell(2).alignment={horizontal:'center',vertical:'middle'};
    row.getCell(3).value=it.name||'';row.getCell(3).font={bold:true,size:9};row.getCell(3).alignment={wrapText:true,vertical:'middle'};
    row.getCell(4).value=it.model||'';row.getCell(4).alignment={horizontal:'center',vertical:'middle'};
    row.getCell(5).value=it.specs||(it.info||'');row.getCell(5).font={size:8,color:{argb:'FF64748B'}};row.getCell(5).alignment={wrapText:true,vertical:'middle'};
    row.getCell(6).value=qty;row.getCell(6).numFmt=N;row.getCell(6).alignment={horizontal:'center',vertical:'middle'};
    row.getCell(7).value=price;row.getCell(7).numFmt=M;row.getCell(7).alignment={horizontal:'right',vertical:'middle'};
    row.getCell(8).value=discPrice;row.getCell(8).numFmt=M;row.getCell(8).alignment={horizontal:'right',vertical:'middle'};if(discPrice<price)row.getCell(8).font={bold:true,color:{argb:'FFDC3545'}};
    row.getCell(9).value=lineTotal;row.getCell(9).numFmt=M;row.getCell(9).font={bold:true,size:9};row.getCell(9).alignment={horizontal:'right',vertical:'middle'};
    row.getCell(10).value=it.note||'';row.getCell(10).font={size:8};row.getCell(10).alignment={wrapText:true,vertical:'middle'};
    for(var ci=1;ci<=10;ci++){row.getCell(ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:bg}};row.getCell(ci).border=RB;}
    cr++;
  });
  
  // WARRANTY
  ws.mergeCells(cr,1,cr,10);ws.getRow(cr).height=18;ws.getCell('A'+cr).value='✅ Bảo hành 2 năm (sản phẩm) — Bảo hành hoen gỉ vĩnh viễn (rổ SUS304)';ws.getCell('A'+cr).font={size:9,color:{argb:'FF059669'},italic:true};ws.getCell('A'+cr).alignment={vertical:'middle'};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFF0FDF4'}};cr++;
  
  // FEES
  var fees=data.fees||[];
  if(fees.length>0){fees.forEach(function(f){ws.mergeCells(cr,1,cr,8);ws.getRow(cr).height=20;ws.getCell('A'+cr).value='   ⊕ '+(f.label||'Phụ phí');ws.getCell('A'+cr).font={size:9,color:{argb:'FF92400E'}};ws.getCell('A'+cr).alignment={vertical:'middle'};ws.getCell('I'+cr).value=Number(f.amount||0);ws.getCell('I'+cr).numFmt=M;ws.getCell('I'+cr).font={bold:true,size:9,color:{argb:'FF92400E'}};ws.getCell('I'+cr).alignment={horizontal:'right',vertical:'middle'};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFFFFBEB'}};cr++;});}
  
  // TOTAL
  var TBG='FF003F62',TB={top:{style:'thin',color:{argb:TBG}},bottom:{style:'thin',color:{argb:TBG}},left:{style:'thin',color:{argb:TBG}},right:{style:'thin',color:{argb:TBG}}};ws.mergeCells(cr,1,cr,8);var tRow=ws.getRow(cr);tRow.height=28;tRow.getCell(1).value='TỔNG CỘNG';tRow.getCell(1).font={bold:true,size:13,color:{argb:'FFFFFFFF'}};tRow.getCell(1).alignment={horizontal:'left',vertical:'middle',indent:1};for(var ci=1;ci<=10;ci++){tRow.getCell(ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:TBG}};tRow.getCell(ci).border=TB;}
  tRow.getCell(9).value=Number(data.grandTotal||0);tRow.getCell(9).numFmt=M;tRow.getCell(9).font={bold:true,size:15,color:{argb:'FFF0B840'}};tRow.getCell(9).alignment={horizontal:'right',vertical:'middle'};cr++;
  
  // DEPOSIT
  var deposit=Number(data.deposit||0);
  if(deposit>0){ws.mergeCells(cr,1,cr,8);ws.getRow(cr).height=22;ws.getCell('A'+cr).value='Đặt cọc';ws.getCell('A'+cr).font={bold:true,size:11,color:{argb:'FF166534'}};ws.getCell('A'+cr).alignment={horizontal:'left',vertical:'middle',indent:1};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFF0FDF4'}};ws.getCell('I'+cr).value=deposit;ws.getCell('I'+cr).numFmt=M;ws.getCell('I'+cr).font={bold:true,size:11,color:{argb:'FF166534'}};ws.getCell('I'+cr).alignment={horizontal:'right',vertical:'middle'};cr++;
  ws.mergeCells(cr,1,cr,8);ws.getRow(cr).height=24;ws.getCell('A'+cr).value='Còn lại';ws.getCell('A'+cr).font={bold:true,size:12,color:{argb:'FFDC2626'}};ws.getCell('A'+cr).alignment={horizontal:'left',vertical:'middle',indent:1};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFFEF2F2'}};ws.getCell('I'+cr).value=Number(data.remaining||0);ws.getCell('I'+cr).numFmt=M;ws.getCell('I'+cr).font={bold:true,size:13,color:{argb:'FFDC2626'}};ws.getCell('I'+cr).alignment={horizontal:'right',vertical:'middle'};cr++;
}else{ws.mergeCells(cr,1,cr,8);ws.getRow(cr).height=24;ws.getCell('A'+cr).value='Còn lại (100%)';ws.getCell('A'+cr).font={bold:true,size:12,color:{argb:'FFDC2626'}};ws.getCell('A'+cr).alignment={horizontal:'left',vertical:'middle',indent:1};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFFEF2F2'}};ws.getCell('I'+cr).value=Number(data.grandTotal||0);ws.getCell('I'+cr).numFmt=M;ws.getCell('I'+cr).font={bold:true,size:13,color:{argb:'FFDC2626'}};ws.getCell('I'+cr).alignment={horizontal:'right',vertical:'middle'};cr++;}
  
  // NOTES
  var notes=data.notes||[];if(notes.length>0){ws.mergeCells(cr,1,cr,10);ws.getCell('A'+cr).value='📝 Ghi chú: '+notes.join('; ');ws.getCell('A'+cr).font={italic:true,size:9,color:{argb:'FF166534'}};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFF0FDF4'}};cr++;}
  
  // BANK INFO
  cr++;ws.mergeCells(cr,1,cr,5);ws.getRow(cr).height=18;ws.getCell('A'+cr).value='💳 QR CODE: VIB - 918258385 - Trần Quốc Vương';ws.getCell('A'+cr).font={bold:true,size:10,color:{argb:'FF003F62'}};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFF8FAFC'}};cr++;
  ws.mergeCells(cr,1,cr,10);ws.getCell('A'+cr).value='🏦 VIB | 👤 Trần Quốc Vương | STK: 918258385 | 💰 '+((deposit>0?data.remaining:data.grandTotal)||0).toLocaleString('vi-VN')+'đ | 📝 '+code;ws.getCell('A'+cr).font={bold:true,size:10};for(var ci=1;ci<=10;ci++)ws.getCell(cr,ci).fill={type:'pattern',pattern:'solid',fgColor:{argb:'FFF8FAFC'}};
  
  // Final borders
  ws.eachRow(function(row){row.eachCell(function(cell){if(!cell.border)cell.border=WB;});});
  wb.calcProperties.fullCalcOnLoad=true;
  
  var buf=await wb.xlsx.writeBuffer();var blob=new Blob([buf],{type:'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'});var url=URL.createObjectURL(blob);var a=document.createElement('a');a.href=url;a.download=code+'.xlsx';a.style.display='none';document.body.appendChild(a);a.click();setTimeout(function(){document.body.removeChild(a);URL.revokeObjectURL(url);},60000);
  console.log('[VAI EXPORT v6] ✅ '+code+'.xlsx');
}

// ===== FALLBACK HTML (khi ExcelJS lỗi) =====
function fallbackXls(){try{var data;if(window.VAI_QR&&typeof window.VAI_QR.getData==='function')data=window.VAI_QR.getData();else if(typeof getData==='function')data=getData();if(!data||!data.qd||!data.qd.items){alert('⚠️ Không có dữ liệu');return;}
  var qd=data.qd,cust=qd.customer||{},code=(window.VAI_QR&&typeof window.VAI_QR.getEffectiveOrderCode==='function')?window.VAI_QR.getEffectiveOrderCode():'VAS'+Date.now().toString(36).toUpperCase();
  function fmt(n){if(!n||isNaN(n))return'0đ';return Number(n).toLocaleString('vi-VN')+'đ';}
  var h='<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><meta charset="UTF-8"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>BaoGia</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--><style>td,th{border:1px solid #ccc;padding:4px;font-family:Arial;font-size:11px}th{background:#003f62;color:#fff;font-weight:700}</style></head><body><table cellpadding="3" cellspacing="0" style="border-collapse:collapse;font-family:Arial;font-size:11px;width:100%">';
  h+='<tr><th colspan="7" style="font-size:18px;color:#db9815;text-align:center;padding:10px;background:#003f62;color:#fff">V.AI STUDIO — BẢNG BÁO GIÁ</th></tr>';h+='<tr><td colspan="2"><b>KH:</b> '+(cust.name||'')+'</td><td colspan="3"><b>Mã:</b> '+code+'</td><td colspan="2"><b>Ngày:</b> '+(cust.date||'')+'</td></tr>';h+='<tr><td colspan="7"><b>SĐT:</b> '+(cust.phone||'')+' | <b>Email:</b> '+(cust.email||'')+' | <b>ĐC:</b> '+(cust.addr||'')+'</td></tr>';h+='<tr><th>STT</th><th>Tên SP</th><th>Mã SP</th><th>SL</th><th>Đơn giá</th><th>Giá CK</th><th>Thành tiền</th></tr>';
  var total=0;qd.items.forEach(function(it,i){var lt=(it.discPrice||it.price||0)*(it.qty||1);total+=lt;var bg=i%2===0?'#f8fafc':'#fff';var ckS=(it.discPrice&&it.price&&it.discPrice<it.price)?' style="color:#dc3545;font-weight:700"':'';h+='<tr style="background:'+bg+'"><td style="text-align:center">'+(i+1)+'</td><td style="font-weight:600">'+(it.name||'')+'</td><td style="text-align:center">'+(it.model||'')+'</td><td style="text-align:center">'+(it.qty||1)+'</td><td style="text-align:right">'+fmt(it.price||0)+'</td><td style="text-align:right"'+ckS+'>'+fmt(it.discPrice||it.price||0)+'</td><td style="text-align:right;font-weight:700">'+fmt(lt)+'</td></tr>';});(data.fees||[]).forEach(function(f){h+='<tr style="background:#fffbeb"><td colspan="6" style="color:#92400e">⊕ '+f.label+'</td><td style="text-align:right;font-weight:700;color:#92400e">'+fmt(f.amount)+'</td></tr>';});
  var gt=data.grandTotal||total;h+='<tr style="font-weight:bold;background:#003f62;color:#fff"><td colspan="6" style="text-align:right;padding:8px;font-size:13px">TỔNG CỘNG</td><td style="text-align:right;color:#f0b840;font-size:16px;padding:8px">'+fmt(gt)+'</td></tr>';
  if(data.deposit>0){var rem=gt-data.deposit;h+='<tr style="background:#f0fdf4"><td colspan="6" style="color:#166534">Đã cọc</td><td style="text-align:right;font-weight:700;color:#166534">'+fmt(data.deposit)+'</td></tr>';h+='<tr style="background:#fef2f2"><td colspan="6" style="color:#dc2626;font-weight:700">CÒN LẠI</td><td style="text-align:right;font-weight:900;color:#dc2626">'+fmt(rem>0?rem:0)+'</td></tr>';}
  h+='<tr><td colspan="7" style="font-size:10px;color:#059669;font-style:italic;padding:6px;background:#f0fdf4">✅ Bảo hành 2 năm (sản phẩm) — Bảo hành hoen gỉ vĩnh viễn (rổ SUS304)</td></tr>';h+='<tr><td colspan="7" style="font-size:10px;background:#f8fafc;padding:6px">💳 VIB | Trần Quốc Vương | STK: 918258385 | Số tiền: '+fmt(data.deposit>0?gt-data.deposit:gt)+' | ND: '+code+'</td></tr></table></body></html>';
  var blob=new Blob([h],{type:'application/vnd.ms-excel'});var url=URL.createObjectURL(blob);var a=document.createElement('a');a.href=url;a.download=code+'.xls';a.style.display='none';document.body.appendChild(a);a.click();setTimeout(function(){document.body.removeChild(a);URL.revokeObjectURL(url);},60000);console.log('[VAI EXPORT v6] ✅ Fallback '+code+'.xls');}catch(e){console.error('[VAI EXPORT v6] Fallback error:',e);alert('❌ Lỗi xuất Excel: '+(e.message||e));}}

// ===== SET EXPORT =====
setInterval(function(){
  if(typeof ExcelJS!=='undefined'&&window.VAI_QR){
    window.exportExcel=async function(data,qd,code,qrUrl,bw){
      console.log('[VAI EXPORT v6] exportExcel');
      try{
        // Use passed data or try to get it
        if(!data || !data.qd || !data.qd.items || !data.qd.items.length){
          if(window.VAI_QR&&typeof window.VAI_QR.getData==='function')data=window.VAI_QR.getData();
          else if(typeof getData==='function')data=getData();
          if(!data||!data.qd){
            if(typeof getQuoteData==='function'){var qd2=getQuoteData();data={qd:qd2,fees:[],notes:[],deposit:0,discountPercent:0,itemDiscounts:{},grandTotal:qd2.grandTotal||0,remaining:qd2.grandTotal||0,productTotal:qd2.grandTotal||0};}
          }
        }
        if(!data||!data.qd||!data.qd.items||!data.qd.items.length){console.error('[VAI EXPORT v6] No data');return;}
        var qd=data.qd,code=code||(window.VAI_QR&&typeof window.VAI_QR.getEffectiveOrderCode==='function')?window.VAI_QR.getEffectiveOrderCode():(qd.customer&&qd.customer.orderCode)||'VAS'+Date.now().toString(36).toUpperCase();
        try{await genXl(data,qd,code);}catch(e){console.error('[VAI EXPORT v6] genXl error:',e);fallbackXls();}
      }catch(e){console.error('[VAI EXPORT v6] Error:',e);fallbackXls();}
    };
    window._doExportExcel=window.exportExcel;
    window.VAI_QR.exportExcel=window.exportExcel;
  }
},200);
console.log('[VAI EXPORT v6] ✅ Loaded');})();