// ================== 通用工具 ==================
const ACTION_LABELS={like:'点赞',comment:'评论',follow:'关注',share:'分享'};
const STATUS_MAP={idle:{t:'未启动',c:'default'},connecting:{t:'连接中',c:'warning'},running:{t:'运行中',c:'success'},done:{t:'完成',c:'primary'},error:{t:'异常',c:'danger'},released:{t:'已释放',c:'default'},failed:{t:'失败',c:'danger'}};
const TARGET_MAP={all:'全部空闲',group:'按分组',serial:'指定设备'};
const APP_NAMES={'com.ss.android.ugc.aweme':'抖音','com.ss.android.ugc.aweme.lite':'抖音极速版','com.smile.gifmaker':'快手','com.kuaishou.nebula':'快手极速版','com.tencent.mm':'微信','com.tencent.mobileqq':'QQ','com.tencent.qqlive':'腾讯视频','com.eg.android.AlipayGphone':'支付宝','com.taobao.taobao':'淘宝','com.tmall.wireless':'天猫','com.jingdong.app.mall':'京东','com.xunmeng.pinduoduo':'拼多多','com.ss.android.article.news':'今日头条','com.zhihu.android':'知乎','com.miui.home':'桌面','com.android.launcher':'桌面','com.android.settings':'设置','com.android.systemui':'系统','com.github.uiautomator':'U2','com.github.uiautomator.test':'U2测试'};

function esc(s){return String(s||'').replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));}

// ===== CSRF =====
let _csrfToken='';
// 页面加载后调用：获取 CSRF token，非 GET 请求需携带
async function initCsrf(){
  try{
    const r=await fetch('/api/csrf');
    const d=await r.json();
    _csrfToken=d.token||'';
  }catch(e){}
}
function _csrfHeaders(){
  return _csrfToken?{'X-CSRF-Token':_csrfToken}:{};
}

async function apiGet(url){
  const r=await fetch(url);
  if(r.status===401){window.location='/login';return null;}
  return r.json();
}
async function apiPost(url,body){
  const r=await fetch(url,{method:'POST',headers:{'Content-Type':'application/json',..._csrfHeaders()},body:body?JSON.stringify(body):'{}'});
  if(r.status===401){window.location='/login';return null;}
  return r.json();
}
async function apiPut(url,body){
  const r=await fetch(url,{method:'PUT',headers:{'Content-Type':'application/json',..._csrfHeaders()},body:body?JSON.stringify(body):'{}'});
  if(r.status===401){window.location='/login';return null;}
  return r.json();
}

// ================== 设备列表排序与多选 ==================
let _sortKey='';           // 当前排序字段
let _sortDir='';           // '' | 'asc' | 'desc'
let _selectedSerials=new Set();  // 已勾选的 serial 集合

// 点击表头排序
function sortBy(key){
  if(_sortKey===key){
    // 同一列：切换方向；已是降序则取消
    if(_sortDir==='asc'){_sortDir='desc';}
    else if(_sortDir==='desc'){_sortKey='';_sortDir='';}
    else{_sortDir='asc';}
  }else{
    _sortKey=key;_sortDir='asc';
  }
  // 更新表头样式
  document.querySelectorAll('.table thead th.sortable').forEach(th=>{
    th.classList.remove('sort-asc','sort-desc');
    if(th.dataset.key===_sortKey){
      th.classList.add(_sortDir==='asc'?'sort-asc':(_sortDir==='desc'?'sort-desc':''));
    }
  });
  renderDevices();
}

// 排序比较：从设备对象取排序值
function _sortValue(dev,key){
  let v;
  if(key==='progress'){
    const p=dev.progress||{};
    v=(p.done||0)+(((p.total||0)>0?(p.done||0)/(p.total):0)*10000);
  }else if(key==='stf_occupied'){
    v=dev.stf_occupied?1:0;
  }else if(key==='worker_status'){
    // 按状态优先级排序：running>connecting>idle>done>error>released
    const order={running:0,connecting:1,idle:2,done:3,released:4,error:5,failed:6};
    v=order[dev.worker_status]||99;
  }else{
    v=dev[key]||'';
  }
  return v;
}

// 全选/取消全选
function toggleAllDevices(checked){
  if(checked){
    _statusData.devices.forEach(d=>_selectedSerials.add(d.serial));
  }else{
    _selectedSerials.clear();
  }
  renderDevices();
  updateSelCount();
}

// 单个勾选
function toggleDevice(serial,checked){
  if(checked){_selectedSerials.add(serial);}else{_selectedSerials.delete(serial);}
  updateSelCount();
  // 同步全选框状态
  const all=document.getElementById('cb-all');
  if(all){
    const total=_statusData?(_statusData.devices||[]).length:0;
    all.checked=total>0&&_selectedSerials.size===total;
  }
}

function updateSelCount(){
  const n=_selectedSerials.size;
  const el=document.getElementById('sel-count');
  if(el)el.textContent=n>0?('已选 '+n+' 台'):'未选中';
  const btn=document.getElementById('btn-stop-selected');
  if(btn)btn.disabled=n===0;
}

// 批量停止选中的运行中设备
async function stopSelectedDevices(){
  const serials=Array.from(_selectedSerials);
  if(serials.length===0){showToast('请先勾选设备','error');return;}
  // 只停止运行中/连接中的
  const toStop=serials.filter(s=>{
    const d=(_statusData.devices||[]).find(x=>x.serial===s);
    return d&&(d.worker_status==='running'||d.worker_status==='connecting');
  });
  if(toStop.length===0){showToast('选中的设备没有运行中的任务','error');return;}
  if(!confirm('确定停止选中的 '+toStop.length+' 台设备的任务吗？'))return;
  let ok=0,fail=0;
  for(const s of toStop){
    const r=await apiPost('/api/stop_device',{serial:s});
    if(r&&r.ok){ok++;}else{fail++;}
  }
  showToast('已停止 '+ok+' 台'+(fail>0?('，失败 '+fail+' 台'):''),ok>0?'success':'error');
  setTimeout(loadMonitor,500);
}

// 清除单台设备的异常状态（error/failed → 未启动）
async function clearDeviceError(serial){
  if(!confirm('确认清除设备 '+serial+' 的异常状态？'))return;
  const r=await apiPost('/api/device/clear_error',{serial:serial});
  handleResult(r,()=>loadMonitor());
}
// 一键清除所有异常/失败设备的错误状态（运行中的任务不受影响）
async function clearAllErrors(){
  if(!confirm('确认清除所有设备的异常状态？（运行中/等待重试的设备会跳过）'))return;
  const r=await apiPost('/api/device/clear_all_errors');
  handleResult(r,()=>loadMonitor());
}

// ================== 设备画面查看 ==================
let _shotTimer=null;       // 自动刷新定时器
let _shotSerial='';        // 当前查看的 serial
let _shotLoading=false;    // 防止并发请求

// 打开截图弹窗
function openScreenshot(serial){
  _shotSerial=serial;
  _shotLoading=false;
  // 渲染弹窗
  document.getElementById('modal-title').textContent='设备画面 - '+serial;
  document.getElementById('modal-body').innerHTML=
    '<div id="shot-content" class="shot-loading">正在获取画面...</div>'+
    '<div class="shot-toolbar">'+
      '<button class="btn btn-primary btn-sm" onclick="refreshShot()">刷新</button>'+
      '<label class="auto-label"><input type="checkbox" id="shot-auto" checked onchange="toggleShotAuto()"> 自动刷新(3秒)</label>'+
      '<span class="shot-info" id="shot-time"></span>'+
    '</div>';
  document.getElementById('modal-footer').innerHTML='<button class="btn" onclick="closeShotModal()">关闭</button>';
  // 切换为截图弹窗样式（自适应大小）
  document.getElementById('modal-box').classList.add('shot-modal');
  showModal();
  // 立即取一次
  refreshShot();
  // 开启自动刷新
  startShotTimer();
}

// 关闭截图弹窗（停掉定时器 + 关闭 modal + 还原样式）
function closeShotModal(){
  stopShotTimer();
  _shotSerial='';
  document.getElementById('modal-box').classList.remove('shot-modal');
  closeModal();
}

function toggleShotAuto(){
  const cb=document.getElementById('shot-auto');
  if(cb&&cb.checked){startShotTimer();}else{stopShotTimer();}
}

function startShotTimer(){
  stopShotTimer();
  _shotTimer=setInterval(refreshShot,3000);
}
function stopShotTimer(){
  // 用 typeof 容错：变量未声明时不报错（避免 closeModal 调用时抛异常导致弹窗关不掉）
  if(typeof _shotTimer!=='undefined'&&_shotTimer){clearInterval(_shotTimer);_shotTimer=null;}
}

// 取一次截图
async function refreshShot(){
  if(!_shotSerial)return;
  if(_shotLoading)return;  // 上一次还没回来，跳过这次
  _shotLoading=true;
  const el=document.getElementById('shot-content');
  if(!el){_shotLoading=false;return;}
  // 首次或出错后显示 loading
  if(!el.querySelector('img')){
    el.className='shot-loading';
    el.textContent='正在获取画面...';
  }
  const url='/api/device/screenshot?serial='+encodeURIComponent(_shotSerial)+'&t='+Date.now();
  try{
    const r=await fetch(url);
    if(r.status===401){window.location='/login';return;}
    if(!r.ok){
      const j=await r.json().catch(()=>({}));
      throw new Error(j.error||('HTTP '+r.status));
    }
    const blob=await r.blob();
    const objUrl=URL.createObjectURL(blob);
    el.className='';
    el.innerHTML='<img class="shot-img" src="'+objUrl+'" alt="设备画面">';
    // 更新时间
    const tEl=document.getElementById('shot-time');
    if(tEl)tEl.textContent='更新于 '+new Date().toLocaleTimeString();
    // 释放上一个 objUrl（避免内存泄漏）
    if(el._lastObjUrl)URL.revokeObjectURL(el._lastObjUrl);
    el._lastObjUrl=objUrl;
  }catch(e){
    el.className='shot-err';
    el.textContent='截图失败：'+e.message;
  }finally{
    _shotLoading=false;
  }
}
async function apiDelete(url){
  const r=await fetch(url,{method:'DELETE',headers:_csrfHeaders()});
  if(r.status===401){window.location='/login';return null;}
  return r.json();
}

function showToast(msg,type){
  const t=document.getElementById('toast');
  t.className='toast show toast-'+(type||'success');
  t.textContent=msg;
  setTimeout(()=>t.className='toast',3000);
}
function handleResult(r,callback){
  if(!r)return;
  if(r.ok){showToast(r.msg||'操作成功','success');if(callback)callback();}
  else{showToast(r.error||'操作失败','error');}
}

// ================== Tab 切换 ==================
let _activeTab='monitor';
let _monitorTimer=null;
let _logTimer=null;

function showTab(name){
  _activeTab=name;
  document.querySelectorAll('.tab-panel').forEach(p=>p.classList.remove('active'));
  document.querySelectorAll('.navbar .tab').forEach(t=>t.classList.remove('active'));
  document.getElementById('tab-'+name).classList.add('active');
  document.querySelectorAll('.navbar .tab')[['monitor','tasks','apps','groups','logs','users'].indexOf(name)].classList.add('active');
  // 停止所有定时器
  if(_monitorTimer){clearInterval(_monitorTimer);_monitorTimer=null;}
  if(_logTimer){clearInterval(_logTimer);_logTimer=null;}
  // 按需加载数据
  if(name==='monitor'){loadMonitor();_monitorTimer=setInterval(loadMonitor,5000);}
  if(name==='tasks'){loadTasks();loadCustomActions();}
  if(name==='apps')loadApks();
  if(name==='groups')loadGroups();
  if(name==='logs'){loadLogs();if(document.getElementById('log-auto').checked)_logTimer=setInterval(loadLogs,3000);}
  if(name==='users')loadUsers();
}

// ================== 通用列表：搜索 + 分页 ==================
// 用法：
//   setListPager(key,{data:()=>array, filter:(item,kw)=>bool, render:(item)=>html,
//                     tbody:'tb-id', pager:'pager-id', pageSize:N});
//   applyListPager(key);            // 数据变化后重渲染（含搜索/翻页状态）
//   initListSearch(key,'search-id');// 搜索框绑定
var _LIST_PAGERS={};

function _lp(key){ return _LIST_PAGERS[key] || (_LIST_PAGERS[key]={page:1,kw:'',cfg:null}); }

function setListPager(key,cfg){
  // 只更新配置，不重置 page/kw —— 监控列表 5 秒自动刷新时保持用户当前页
  var st=_lp(key); st.cfg=cfg;
}
function initListSearch(key,inputId){
  var input=document.getElementById(inputId);
  if(!input||input.dataset.bound)return;
  input.dataset.bound='1';
  input.addEventListener('input',function(){
    var st=_lp(key); st.kw=this.value.trim(); st.page=1; applyListPager(key);
  });
}
function applyListPager(key){
  var st=_lp(key);
  if(!st.cfg)return;
  var cfg=st.cfg;
  var all=(cfg.data&&cfg.data())||[];
  var kw=st.kw.toLowerCase();
  var filtered=kw?all.filter(function(x){return cfg.filter(x,kw);}):all;
  var pageSize=cfg.pageSize||10;
  var pages=Math.max(1,Math.ceil(filtered.length/pageSize));
  if(st.page>pages)st.page=pages;
  if(st.page<1)st.page=1;
  var start=(st.page-1)*pageSize;
  var slice=filtered.slice(start,start+pageSize);
  var tb=document.getElementById(cfg.tbody);
  if(tb)tb.innerHTML=slice.map(cfg.render).join('')||(cfg.empty||'<tr><td colspan="20" class="empty">无数据</td></tr>');
  var pg=document.getElementById(cfg.pager);
  if(pg)pg.innerHTML=_lpPagerHtml(key,pages,st.page,filtered.length,pageSize);
}
function _lpPagerHtml(key,pages,cur,total,pageSize){
  if(pages<=1)return total>0?'<div class="list-pager"><span class="lp-total">共 '+total+' 条</span></div>':'';
  var h='<div class="list-pager"><span class="lp-total">共 '+total+' 条</span>';
  h+='<button class="btn btn-xs" onclick="_lpGo(\''+key+'\','+(cur-1)+')"'+(cur<=1?' disabled':'')+'>‹ 上一页</button>';
  for(var p=Math.max(1,cur-2);p<=Math.min(pages,cur+2);p++){
    h+='<button class="btn btn-xs'+(p===cur?' btn-primary':'')+'" onclick="_lpGo(\''+key+'\','+p+')">'+p+'</button>';
  }
  h+='<button class="btn btn-xs" onclick="_lpGo(\''+key+'\','+(cur+1)+')"'+(cur>=pages?' disabled':'')+'>下一页 ›</button>';
  h+='</div>';
  return h;
}
function _lpGo(key,p){
  var st=_lp(key); st.page=p; applyListPager(key);
}

// ================== Tab 1: 监控 ==================
let _statusData=null;
let _jobsData=null;

async function loadMonitor(){
  try{
    const r=await apiGet('/api/status');if(!r||!r.ok)return;
    _statusData=r;
    document.getElementById('srvTime').textContent=new Date(r.server_time*1000).toLocaleTimeString();
    // 前台 App 扫描状态
    const fgStatus=document.getElementById('fg-status');
    const scanBtn=document.getElementById('btn-scan-fg');
    if(r.fg_scanning){
      fgStatus.innerHTML='<span style="color:#f59e0b">扫描中...</span>';
      scanBtn.disabled=true;scanBtn.textContent='扫描中...';
    }else{
      scanBtn.disabled=false;scanBtn.textContent='扫描前台App';
      if(r.fg_last_scan){
        fgStatus.innerHTML='上次扫描: '+new Date(r.fg_last_scan*1000).toLocaleTimeString();
      }else{
        fgStatus.innerHTML='<span style="color:#94a3b8">未扫描</span>';
      }
    }
    const devices=r.devices||[];
    const running=devices.filter(x=>x.worker_status==='running').length;
    const idle=devices.filter(x=>x.worker_status==='idle').length;
    const error=devices.filter(x=>['error','failed'].includes(x.worker_status)).length;
    const occupied=devices.filter(x=>x.stf_occupied).length;
    const total=devices.length;
    const online=devices.filter(x=>x.present).length;
    const cards=[
      {n:total,l:'设备总数',c:'#3b82f6'},
      {n:online,l:'在线',c:'#10b981'},
      {n:running,l:'运行中',c:'#10b981'},
      {n:occupied,l:'STF占用',c:'#f59e0b'},
      {n:idle,l:'空闲',c:'#94a3b8'},
      {n:error,l:'异常',c:'#ef4444'},
    ];
    document.getElementById('stats').innerHTML=cards.map(c=>
      '<div class="stat-card" style="--accent:'+c.c+'"><div class="stat-num" style="color:'+c.c+'">'+c.n+'</div><div class="stat-lbl">'+c.l+'</div></div>'
    ).join('');
    // 渲染设备表格（含排序+多选）
    renderDevices();
    // 同步全选框状态
    const all=document.getElementById('cb-all');
    if(all){
      all.checked=devices.length>0&&_selectedSerials.size===devices.length;
    }
    updateSelCount();
    // 加载任务卡片
    loadJobsForMonitor();
    // 加载异常汇总
    loadSummary();
  }catch(e){console.error(e);}
}

// ===== 异常设备汇总 =====
async function loadSummary(){
  try{
    const r=await apiGet('/api/summary');
    if(!r||!r.ok)return;
    const counts=r.counts||{};
    const errors=r.errors||[];
    const errCount=(counts.error||0)+(counts.failed||0);
    const badge=document.getElementById('summary-badge');
    const panel=document.getElementById('summary-panel');
    const empty=document.getElementById('summary-empty');
    if(badge)badge.textContent='· 异常 '+errCount+' · 运行 '+counts.running+' · 完成 '+counts.done;
    if(!panel||!empty)return;
    if(!errors.length){
      panel.style.display='none';
      empty.style.display='block';
      return;
    }
    panel.style.display='block';
    empty.style.display='none';
    const tb=document.getElementById('tb-summary');
    tb.innerHTML=errors.map(e=>{
      const st=e.status==='failed'?'<span class="label label-danger">失败</span>':'<span class="label label-warning">异常</span>';
      const up=e.updated?new Date(e.updated*1000).toLocaleTimeString():'';
      return '<tr>'+
        '<td><strong>'+esc(e.serial)+'</strong>'+(e.model?' <span style="font-size:11px;color:#94a3b8">'+esc(e.model)+'</span>':'')+'</td>'+
        '<td>'+st+'</td>'+
        '<td>'+esc(e.task||'-')+'</td>'+
        '<td>'+(e.attempt>0?e.attempt+'次':'<span class="text-muted">-</span>')+'</td>'+
        '<td class="err-text" title="'+esc(e.last_error||'')+'">'+esc(e.last_error||'-')+'</td>'+
      '</tr>';
    }).join('');
  }catch(e){console.error(e);}
}

// 渲染设备表格（带排序+搜索+分页，复选状态保持）
let _sortedDevices=[];
let _devicesSig='';
function renderDevices(){
  if(!_statusData||!_statusData.devices){return;}
  // 5秒自动刷新时若设备数据/分页/排序都没变化，跳过整表重渲染（避免DOM抖动）
  const _st=_lp('devices');
  const _sig=JSON.stringify({d:_statusData.devices,p:_st.page,k:_st.kw,s:_sortKey+(_sortDir||'')});
  if(_sig===_devicesSig)return;
  _devicesSig=_sig;
  let devices=_statusData.devices.slice();
  // 排序
  if(_sortKey&&_sortDir){
    const dir=_sortDir==='asc'?1:-1;
    devices.sort((a,b)=>{
      let va=_sortValue(a,_sortKey),vb=_sortValue(b,_sortKey);
      if(typeof va==='string'&&typeof vb==='string'){
        return va.localeCompare(vb)*dir;
      }
      va=Number(va)||0;vb=Number(vb)||0;
      return (va-vb)*dir;
    });
  }
  _sortedDevices=devices;
  setListPager('devices',{
    data:()=>_sortedDevices,
    filter:(dev,kw)=>((dev.serial||'').toLowerCase().includes(kw)||(dev.model||'').toLowerCase().includes(kw)||(dev.foreground_app||'').toLowerCase().includes(kw)||(dev.task_job||'').toLowerCase().includes(kw)||(dev.current_action||'').toLowerCase().includes(kw)),
    render:renderDeviceRow,
    tbody:'tb-devices',pager:'pager-devices',pageSize:10,
    empty:'<tr><td colspan="11" class="empty">暂无设备</td></tr>'
  });
  applyListPager('devices');
  initListSearch('devices','search-devices');
}
function renderDeviceRow(dev){
  const stf=dev.stf_occupied?'<span class="label label-success">占用</span>':'<span class="label label-default">空闲</span>';
  const offline=dev.present?'':' <span class="label label-danger">离线</span>';
  const st=STATUS_MAP[dev.worker_status]||{t:dev.worker_status,c:'default'};
  const wb='<span class="label label-'+st.c+'">'+st.t+'</span>';
  const fgApp=dev.foreground_app;
  const fg=fgApp?(
    fgApp==='(他人占用)'?'<span class="label label-warning">他人占用</span>':
    fgApp==='(不可达)'?'<span class="label label-default">不可达</span>':
    '<span class="label label-primary">'+esc(APP_NAMES[fgApp]||fgApp)+'</span>'
  ):'<span class="text-muted">-</span>';
  const prog=fmtProgress(dev.progress, dev.worker_status);
  const tname=dev.task_job?'<span class="label label-info">'+esc(dev.task_job)+'</span>':'<span class="text-muted">-</span>';
  const retry=dev.attempt>0?' <span class="text-muted">'+dev.attempt+'次</span>':'';
  // 预计结束时间（设置了运行时长上限时显示）
  const endInfo=(dev.worker_status==='running'&&dev.end_time)?'<div style="font-size:11px;color:#94a3b8">预计结束 '+new Date(dev.end_time*1000).toLocaleTimeString()+'</div>':'';
  // 选择器健康警告（某步骤连续未找到元素，可能 App 改版选择器失效）
  const warnInfo=dev.last_warning?'<div style="font-size:11px;color:#f59e0b" title="'+esc(dev.last_warning)+'">⚠ '+esc(dev.last_warning)+'</div>':'';
  // 设备操作按钮需要"设备控制"权限（无权限只保留截图查看）
  const canDev=_can('devices');
  const stopBtn=canDev&&(dev.worker_status==='running'||dev.worker_status==='connecting')?'<button class="btn btn-danger btn-xs" onclick="apiAction(\'/api/stop_device\',{serial:\''+esc(dev.serial)+'\'})">停止</button>':'';
  // 截图按钮（任何状态都可看，离线时会报错）
  const shotBtn='<button class="btn btn-xs" onclick="openScreenshot(\''+esc(dev.serial)+'\')" title="查看设备画面（不影响任务）">截图</button>';
  // 异常/失败设备提供"清除异常"（把状态恢复为未启动）
  const clearBtn=canDev&&(dev.worker_status==='error'||dev.worker_status==='failed')
    ?'<button class="btn btn-xs" onclick="clearDeviceError(\''+esc(dev.serial)+'\')" title="清除该设备的异常状态，恢复为未启动">清除异常</button>':'';
  const btns='<div style="display:flex;gap:4px;flex-wrap:wrap">'+shotBtn+clearBtn+stopBtn+'</div>';
  const devName=dev.device_name||dev.model||'';
  const devLabel=devName?'<strong>'+esc(dev.serial)+'</strong><br><span style="font-size:11px;color:#94a3b8">'+esc(devName)+'</span>':'<strong>'+esc(dev.serial)+'</strong>';
  // 复选框列
  const checked=_selectedSerials.has(dev.serial)?'checked':'';
  const rowCls=_selectedSerials.has(dev.serial)?'row-checked':'';
  const cb='<input type="checkbox" '+checked+' onclick="toggleDevice(\''+esc(dev.serial)+'\',this.checked)">';
  return '<tr class="'+rowCls+'"><td class="col-cb">'+cb+'</td><td>'+devLabel+'</td><td>'+esc(dev.model)+'</td><td>'+stf+offline+'</td><td>'+wb+'</td><td>'+fg+'</td><td>'+prog+'</td><td>'+tname+retry+endInfo+'</td><td class="text-muted">'+esc(dev.current_action||'-')+warnInfo+'</td><td class="err-text" title="'+esc(dev.last_error||'')+'">'+esc(dev.last_error||'-')+'</td><td>'+btns+'</td></tr>';
}

async function loadJobsForMonitor(){
  try{
    const r=await apiGet('/api/jobs');if(!r||!r.ok)return;
    _jobsData=r.jobs||[];
    renderJobCards();
  }catch(e){console.error(e);}
}

// 通用进度展示：解析 progress = {done, total, unit, action_counts, elapsed}
// 任意 app 都能用：显示进度条 + "done/total unit" + 运行时长 + 操作计数徽章
function fmtProgress(progress, workerStatus){
  if(!progress||!Object.keys(progress).length){
    // 空闲/未运行 → 显示"-"
    return '<span class="text-muted">-</span>';
  }
  const done=progress.done||0;
  const total=progress.total||0;
  const unit=progress.unit||'';
  const elapsed=progress.elapsed||0;
  const counts=progress.action_counts||{};
  // 进度条（百分比）
  let barHtml='';
  if(total>0){
    const pct=Math.min(100,Math.round(done*100/total));
    barHtml='<div class="progress"><div class="progress-bar" style="width:'+pct+'%"></div></div> ';
  }
  // 计数文本："5/80 视频" 或 "5 视频"（无 total 时）
  let countHtml='';
  if(total>0){
    countHtml='<span style="font-size:12px;color:#64748b">'+done+'/'+total+(unit?' '+esc(unit):'')+'</span>';
  }else if(done>0){
    countHtml='<span style="font-size:12px;color:#64748b">'+done+(unit?' '+esc(unit):'')+'</span>';
  }
  // 运行时长（elapsed>0 才显示）
  let timeHtml='';
  if(elapsed>0){
    const m=Math.floor(elapsed/60), s=elapsed%60;
    timeHtml=' <span style="font-size:11px;color:#94a3b8">'+m+'m'+s+'s</span>';
  }
  // 操作计数徽章（按数量降序，最多显示6个，超出的折叠为 +N）
  const countEntries=Object.entries(counts).filter(([_,v])=>v>0).sort((a,b)=>b[1]-a[1]);
  const MAX_COUNTS=6;
  const shown=countEntries.slice(0,MAX_COUNTS);
  const more=countEntries.length-MAX_COUNTS;
  let countsHtml='';
  if(shown.length){
    countsHtml='<div style="margin-top:2px">'+shown.map(([k,v])=>
      '<span class="label label-info" style="margin-left:4px;font-size:11px">'+(ACTION_LABELS[k]||esc(k))+' '+v+'</span>'
    ).join('')+(more>0?' <span style="font-size:11px;color:#94a3b8">+'+more+'</span>':'')+'</div>';
  }
  // 空闲/完成但无进度数据 → 灰显
  if(done===0&&total===0&&elapsed===0&&!countParts.length){
    return '<span class="text-muted">-</span>';
  }
  return '<div>'+barHtml+countHtml+timeHtml+'</div>'+countsHtml;
}

function fmtParams(params){
  if(!params||!Object.keys(params).length)return '';
  const parts=[];
  for(const [k,v] of Object.entries(params)){
    if(k==='actions'){
      if(v&&Object.keys(v).length){
        const on=Object.entries(v).filter(([_,c])=>c.enabled).map(([a])=>ACTION_LABELS[a]||a);
        if(on.length)parts.push('<span class="kv">操作:'+on.join('/')+'</span>');
      }
      continue;
    }
    const val=typeof v==='boolean'?(v?'开':'关'):(Array.isArray(v)?v.length+'条':v);
    parts.push('<span class="kv">'+k+'='+val+'</span>');
  }
  return parts.join('');
}

function renderJobCards(){
  const jobs=_jobsData||[];
  const running={};
  if(_statusData)for(const dev of _statusData.devices){
    if(dev.task_job)running[dev.task_job]=(running[dev.task_job]||0)+1;
  }
  document.getElementById('jobs-grid').innerHTML=jobs.length?jobs.map(j=>{
    const runCount=running[j.name]||0;
    const isRunning=runCount>0;
    const tgt=TARGET_MAP[j.target.mode]||j.target.mode;
    const tgtDetail=j.target.mode==='group'?(j.target.group_name||''):(j.target.mode==='serial'?(j.target.serial||''):'');
    const sched=j.schedule.mode==='cron_stop'?('启停 '+j.schedule.cron+'→'+j.schedule.stop_cron):
                 j.schedule.mode==='cron'?('定时 '+j.schedule.cron):'手动';
    const retry=j.retry.max_attempts>1?(j.retry.max_attempts+'次/间隔'+j.retry.delay+'s'):'不重试';
    const en=j.enabled?'<span class="label label-success">启用</span>':'<span class="label label-default">停用</span>';
    const runBadge=isRunning?'<span class="label label-success pulse">运行中 '+runCount+'台</span>':'<span class="label label-default">空闲</span>';
    return '<div class="job-card'+(isRunning?' running':'')+'">'+
      '<div class="job-head"><div><div class="job-name">'+esc(j.name)+'</div>'+
      '<div class="job-type">'+esc(j.task_type)+'</div></div>'+
      '<div>'+en+' '+runBadge+'</div></div>'+
      '<div class="job-body">'+
        '<div><span class="kv">目标:'+esc(tgt)+(tgtDetail?'('+esc(tgtDetail)+')':'')+'</span>'+
        '<span class="kv">调度:'+esc(sched)+'</span>'+
        '<span class="kv">重试:'+esc(retry)+'</span></div>'+
        '<div style="margin-top:4px">'+fmtParams(j.params)+'</div>'+
      '</div>'+
      '<div class="job-actions">'+
        '<button class="btn btn-primary btn-xs" onclick="apiAction(\'/api/jobs/'+j.id+'/run\')">立即执行</button>'+
        '<button class="btn btn-xs" onclick="apiAction(\'/api/jobs/'+j.id+'/toggle\',{enabled:'+(!j.enabled)+'})">'+(j.enabled?'停用':'启用')+'</button>'+
        '<button class="btn btn-xs" onclick="openTaskModal(\''+j.id+'\')">编辑</button>'+
        '<button class="btn btn-danger btn-xs" onclick="deleteTask(\''+j.id+'\')">删除</button>'+
      '</div>'+
    '</div>';
  }).join(''):'<div class="empty">暂无任务，到"任务"Tab 新建</div>';
}

// ================== Tab 2: 任务 ==================
let _taskTypes=[];
let _groupsList=[];
let _devicesList=[];

async function loadTasks(){
  const [jr,gr,dr,tr]=await Promise.all([
    apiGet('/api/jobs'),apiGet('/api/groups'),apiGet('/api/devices'),apiGet('/api/task_types')
  ]);
  if(!jr)return;
  _jobsData=jr.jobs||[];
  _taskTypes=tr?tr.task_types||[]:[];
  _groupsList=gr?gr.groups||[]:[];
  _devicesList=dr?dr.devices||[]:[];
  renderTaskTable();
}

function renderTaskTable(){
  const jobs=_jobsData||[];
  setListPager('tasks',{
    data:()=>jobs,
    filter:(j,kw)=>((j.name||'').toLowerCase().includes(kw)||(j.task_type||'').toLowerCase().includes(kw)||(j.id||'').toLowerCase().includes(kw)),
    render:renderTaskRow,
    tbody:'tb-tasks',pager:'pager-tasks',pageSize:10,
    empty:'<tr><td colspan="8" class="empty">暂无任务，点击"新建任务"创建</td></tr>'
  });
  applyListPager('tasks');
  initListSearch('tasks','search-tasks');
}
function renderTaskRow(j){
  const tgt=TARGET_MAP[j.target.mode]||j.target.mode;
  const tgtDetail=j.target.mode==='group'?(j.target.group_name||''):(j.target.mode==='serial'?(j.target.serial||''):'');
  const sched=j.schedule.mode==='cron_stop'?('启停 '+esc(j.schedule.cron||'')+'→'+esc(j.schedule.stop_cron||'')):
               j.schedule.mode==='cron'?('定时 '+esc(j.schedule.cron||'')):'手动';
  const retry=j.retry.max_attempts>1?(j.retry.max_attempts+'次/'+j.retry.delay+'s'):'不重试';
  const en=j.enabled?'<span class="label label-success">启用</span>':'<span class="label label-default">停用</span>';
  return '<tr>'+
    '<td><code>'+esc(j.id)+'</code></td>'+
    '<td><strong>'+esc(j.name)+'</strong></td>'+
    '<td>'+esc(j.task_type)+'</td>'+
    '<td>'+en+'</td>'+
    '<td>'+esc(tgt)+(tgtDetail?'('+esc(tgtDetail)+')':'')+'</td>'+
    '<td>'+sched+'</td>'+
    '<td>'+retry+'</td>'+
    '<td>'+
      '<button class="btn btn-primary btn-xs" onclick="apiAction(\'/api/jobs/'+j.id+'/run\')">执行</button>'+
      '<button class="btn btn-xs" onclick="apiAction(\'/api/jobs/'+j.id+'/toggle\',{enabled:'+(!j.enabled)+'})">'+(j.enabled?'停用':'启用')+'</button>'+
      '<button class="btn btn-xs" onclick="openTaskModal(\''+j.id+'\')">编辑</button>'+
      '<button class="btn btn-danger btn-xs" onclick="deleteTask(\''+j.id+'\')">删除</button>'+
    '</td>'+
  '</tr>';
}

function openTaskModal(jobId){
  const job=jobId?(_jobsData||[]).find(j=>j.id===jobId):null;
  const isEdit=!!job;
  document.getElementById('modal-title').textContent=isEdit?'编辑任务':'新建任务';

  const j=job||{name:'',task_type:'douyin_nurture',enabled:true,target:{mode:'all'},params:{},schedule:{mode:'once'},retry:{max_attempts:1,delay:60}};
  const tt=_taskTypes.map(t=>'<option value="'+t.task_type+'"'+(t.task_type===j.task_type?' selected':'')+'>'+esc(t.name)+'</option>').join('');
  const gl=_groupsList.map(g=>'<option value="'+g.name+'"'+(g.name===j.target.group_name?' selected':'')+'>'+esc(g.name)+'</option>').join('');
  const dl=_devicesList.map(s=>'<option value="'+s+'"'+(s===j.target.serial?' selected':'')+'>'+esc(s)+'</option>').join('');
  const sm=j.schedule.mode;
  const startCron=(sm==='cron'||sm==='cron_stop')?(j.schedule.cron||''):'';
  const stopCron=sm==='cron_stop'?(j.schedule.stop_cron||''):'';

  document.getElementById('modal-body').innerHTML=
    '<div class="form-row">'+
      '<div class="form-group"><label>任务名</label><input type="text" class="form-control" id="f-name" value="'+esc(j.name)+'" placeholder="如：抖音养号-上午"></div>'+
      '<div class="form-group"><label>任务类型</label><select class="form-control" id="f-task_type" onchange="onTaskTypeChange()">'+tt+'</select></div>'+
    '</div>'+
    '<div class="form-group form-check"><input type="checkbox" id="f-enabled" '+(j.enabled?'checked':'')+'><label for="f-enabled">启用此任务</label></div>'+
    '<div class="form-group"><label>目标设备</label>'+
      '<select class="form-control" id="f-target_mode" onchange="toggleTargetFields()">'+
        '<option value="all"'+(j.target.mode==='all'?' selected':'')+'>全部空闲设备</option>'+
        '<option value="group"'+(j.target.mode==='group'?' selected':'')+'>按分组</option>'+
        '<option value="serial"'+(j.target.mode==='serial'?' selected':'')+'>指定设备</option>'+
      '</select>'+
      '<div id="f-target_group_wrap" class="form-group" style="margin-top:8px;margin-bottom:0">'+
        '<select class="form-control" id="f-target_group"><option value="">选择分组...</option>'+gl+'</select>'+
      '</div>'+
      '<div id="f-target_serial_wrap" class="form-group" style="margin-top:8px;margin-bottom:0">'+
        '<select class="form-control" id="f-target_serial"><option value="">选择设备...</option>'+dl+'</select>'+
      '</div>'+
    '</div>'+
    '<div class="form-row">'+
      '<div class="form-group"><label>调度方式</label>'+
        '<select class="form-control" id="f-schedule_mode" onchange="toggleScheduleFields()">'+
          '<option value="once"'+(sm==='once'?' selected':'')+'>手动执行</option>'+
          '<option value="cron"'+(sm==='cron'?' selected':'')+'>定时启动</option>'+
          '<option value="cron_stop"'+(sm==='cron_stop'?' selected':'')+'>定时启停</option>'+
        '</select>'+
      '</div>'+
      '<div class="form-group" id="f-cron_wrap"><label>启动 Cron 表达式</label><input type="text" class="form-control" id="f-schedule_cron" value="'+esc(startCron)+'" placeholder="如 0 9 * * * = 每天9点启动" style="font-family:monospace"><div class="help">格式：分 时 日 月 周</div></div>'+
      '<div class="form-group" id="f-stop_cron_wrap"><label>停止 Cron 表达式</label><input type="text" class="form-control" id="f-schedule_stop_cron" value="'+esc(stopCron)+'" placeholder="如 0 18 * * * = 每天18点停止" style="font-family:monospace"><div class="help">到点自动停止所有运行中的 worker</div></div>'+
    '</div>'+
    '<div class="form-row">'+
      '<div class="form-group"><label>重试次数</label><input type="number" class="form-control" id="f-retry_attempts" value="'+j.retry.max_attempts+'" min="1" max="10"></div>'+
      '<div class="form-group"><label>重试间隔(秒)</label><input type="number" class="form-control" id="f-retry_delay" value="'+j.retry.delay+'" min="10" max="3600"></div>'+
    '</div>'+
    '<div class="form-group" id="f-params_wrap"><label>任务参数 (JSON)</label><textarea class="form-control" id="f-params" rows="6">'+esc(JSON.stringify(j.params||{},null,2))+'</textarea><div class="help">可留空使用默认参数。抖音任务可设 max_duration（秒，如 1800=30分钟）限制单设备运行时长</div></div>'+
    '<div class="step-editor" id="step-editor">'+
      '<div class="se-head"><span>步骤编辑器</span><span style="font-size:11px;color:var(--text-light);flex:1;margin-left:12px">用步骤卡片上的 ☑ 选中多个步骤，可打包成自定义动作</span>'+
        '<button class="btn btn-xs btn-primary" id="se-pack-btn" disabled onclick="_stepEditor.saveAsCustomAction()">打包选中步骤</button>'+
      '</div>'+
      '<div class="se-body">'+
        '<div class="se-lib" id="se-lib"><div class="lib-title">操作库</div></div>'+
        '<div class="se-canvas" id="se-canvas"></div>'+
      '</div>'+
    '</div>';

  // 初始化步骤编辑器（generic_steps 时显示，其他隐藏）；jobId 作为草稿 key
  _stepEditor.init(j.params&&j.params.steps?j.params.steps:[],j.params&&j.params.max_duration?j.params.max_duration:0,jobId||'');

  document.getElementById('modal-footer').innerHTML=
    '<button class="btn" onclick="closeModal()">取消</button>'+
    '<button class="btn btn-primary" onclick="saveTask('+(isEdit?'\''+jobId+'\'':'null')+')">'+(isEdit?'保存':'创建')+'</button>';

  toggleTargetFields();
  toggleScheduleFields();
  onTaskTypeChange();
  showModal();
}

function toggleTargetFields(){
  const mode=document.getElementById('f-target_mode').value;
  document.getElementById('f-target_group_wrap').style.display=mode==='group'?'block':'none';
  document.getElementById('f-target_serial_wrap').style.display=mode==='serial'?'block':'none';
}

function toggleScheduleFields(){
  const mode=document.getElementById('f-schedule_mode').value;
  document.getElementById('f-cron_wrap').style.display=(mode==='cron'||mode==='cron_stop')?'block':'none';
  document.getElementById('f-stop_cron_wrap').style.display=mode==='cron_stop'?'block':'none';
}

function onTaskTypeChange(){
  const tt=document.getElementById('f-task_type').value;
  const isGeneric=tt==='generic_steps';
  document.getElementById('step-editor').classList.toggle('show',isGeneric);
  document.getElementById('f-params_wrap').style.display=isGeneric?'none':'block';
}

// ================== 步骤编辑器 ==================
var STEP_LIB=[
  {type:'open_app',label:'打开App',icon:'▶',params:{package:'',wait_home:false,home_feature:''}},
  {type:'swipe',label:'滑动',icon:'↕',params:{direction:'up',duration_min:0.25,duration_max:0.50}},
  {type:'click',label:'点击元素',icon:'✦',params:{selector_type:'xpath',selector_value:'',wait_timeout:2}},
  {type:'input_text',label:'输入文字',icon:'⌨',params:{mode:'random',texts:'你好\n有趣\n支持',fixed_text:''}},
  {type:'wait',label:'等待',icon:'⏱',params:{min:1.0,max:3.0}},
  {type:'loop',label:'循环块',icon:'↻',params:{loop_mode:'rounds',max_iterations:10,loop_duration:600,children:[]}},
  {type:'group',label:'动作组',icon:'📦',params:{children:[]}}
];
var _customActions=[]; // 后端加载的自定义动作
var _stepIdCounter=0;
function _newStepId(){_stepIdCounter++;return 'step_'+Date.now().toString(36)+'_'+_stepIdCounter;}
function _findLib(type){return STEP_LIB.find(function(s){return s.type===type;});}

// 加载自定义动作库
function _loadCustomActions(){
  fetch('/api/custom_actions').then(function(r){return r.json();}).then(function(res){
    if(res.ok)_customActions=res.actions||[];
    if(typeof _stepEditor!=='undefined')_stepEditor._renderLib();
  }).catch(function(){});
}

var _stepEditor={
  _steps:[],
  _selected:[],
  _dragSuppressClick:false,
  init:function(steps,maxDuration,draftKey,canvasId,libId){
    this._draftKey=draftKey||'new';
    this._selected=[];
    this._dragSuppressClick=false;
    // 可指定编辑容器（任务编辑器 vs 动作编辑器），默认任务编辑器
    this._canvas=document.getElementById(canvasId||'se-canvas');
    this._lib=document.getElementById(libId||'se-lib');
    // 嵌套结构数组注册表：arr 唯一 id → 数组引用（修复多层级循环内移动错位）
    this._arrCounter=0;
    this._arrById={};
    this._arrIdMap=new WeakMap();
    // 恢复上次未保存的草稿（实时保存）；没有则用传入的步骤
    var draft=this._loadDraft();
    if(draft&&Array.isArray(draft)){
      this._steps=draft;
    }else{
      this._steps=steps.length?JSON.parse(JSON.stringify(steps)):[];
    }
    this._ensureIds(this._steps);
    this._renderLib();
    this._renderCanvas();
    _loadCustomActions();
    // 实时同步：画布内任何输入（含下拉/勾选）都同步回 _steps 并自动保存
    var canvas=this._canvas;
    if(canvas&&!canvas.dataset.seBound){
      canvas.dataset.seBound='1';
      var self=this;
      canvas.addEventListener('input',function(){self._syncFromDom();});
    }
    if(draft&&Array.isArray(draft)){
      showToast('已恢复上次未保存的步骤编辑','success');
    }
    // max_duration 输入框（只在任务编辑器注入，动作编辑不需要）
    var head=document.querySelector('#step-editor .se-head');
    if(head&&!document.getElementById('f-max_duration')){
      var md=document.createElement('span');
      md.style.cssText='font-size:11px;display:flex;align-items:center;gap:4px';
      md.innerHTML='运行时长上限(秒,0=不限) <input type="number" id="f-max_duration" value="'+(maxDuration||0)+'" min="0" style="width:70px;padding:2px 6px;border:1px solid var(--border);border-radius:4px;font-size:12px">';
      head.appendChild(md);
    }
  },
  _ensureIds:function(steps){
    var self=this;
    steps.forEach(function(s){
      if(!s.id)s.id=_newStepId();
      if(s.params&&s.params.children&&Array.isArray(s.params.children)){
        self._ensureIds(s.params.children);
      }
    });
  },
  _renderLib:function(){
    var lib=this._lib;
    if(!lib)return; // 未初始化编辑器（如仅加载动作列表时）跳过
    var items=STEP_LIB.map(function(s){
      return '<div class="lib-item" draggable="true" data-type="'+s.type+'">'+
        '<span class="ico">'+s.icon+'</span><span>'+s.label+'</span></div>';
    }).join('');
    // 自定义动作区
    var customHtml='';
    if(_customActions.length){
      customHtml='<div class="lib-section"><div class="lib-title">自定义动作</div>';
      customHtml+=_customActions.map(function(a){
        return '<div class="lib-item custom" draggable="true" data-action-id="'+a.id+'">'+
          '<span class="ico">'+(a.icon||'📦')+'</span><span>'+esc(a.name)+'</span>'+
          '<button class="del-btn" title="删除" onclick="event.stopPropagation();_stepEditor.delCustomAction(\''+a.id+'\')">✕</button></div>';
      }).join('');
      customHtml+='</div>';
    }
    lib.innerHTML='<div class="lib-title">操作库</div>'+items+customHtml;
    var self=this;
    // 绑定拖拽 + 点击（系统步骤）—— 用 _dragSuppressClick 防止拖拽后重复触发 click
    lib.querySelectorAll('.lib-item[data-type]').forEach(function(item){
      var type=item.dataset.type;
      item.addEventListener('dragstart',function(e){
        self._dragSuppressClick=true;
        e.dataTransfer.setData('text/plain','type:'+type);
        e.dataTransfer.effectAllowed='copy';
      });
      item.addEventListener('click',function(e){
        if(self._dragSuppressClick){self._dragSuppressClick=false;return;}
        self.addStep(type);
      });
    });
    // 绑定拖拽 + 点击（自定义动作）
    lib.querySelectorAll('.lib-item[data-action-id]').forEach(function(item){
      var actionId=item.dataset.actionId;
      item.addEventListener('dragstart',function(e){
        self._dragSuppressClick=true;
        e.dataTransfer.setData('text/plain','action:'+actionId);
        e.dataTransfer.effectAllowed='copy';
      });
      item.addEventListener('click',function(e){
        if(e.target.classList.contains('del-btn'))return;
        if(self._dragSuppressClick){self._dragSuppressClick=false;return;}
        self.addCustomAction(actionId);
      });
    });
  },
  _renderCanvas:function(){
    if(!this._canvas)return;
    this._renderStepList(this._canvas,this._steps);
  },
  _renderStepList:function(container,steps){
    var self=this;
    if(!steps.length){
      container.innerHTML='<div class="se-empty">拖拽左侧操作到这里<div class="hint">或点击操作库直接添加</div></div>';
      this._bindDropZone(container,steps); // 空时也要能接收拖入
      return;
    }
    container.innerHTML='';
    steps.forEach(function(step,idx){
      container.appendChild(self._renderCard(step,idx,steps));
    });
    this._bindDropZone(container,steps);
  },
  _renderCard:function(step,idx,parentArr){
    var self=this;
    var lib=_findLib(step.type)||{icon:'?',label:step.type};
    var isContainer=(step.type==='loop'||step.type==='group');
    var card=document.createElement('div');
    card.className='step-card'+(step.type==='loop'?' loop-block':'')+(step.type==='group'?' group-block':'');
    card.draggable=true;
    card.dataset.idx=idx;
    card.dataset.stepId=step.id||'';
    if(this._selected&&this._selected.indexOf(step.id)>=0)card.classList.add('selected');
    // head
    var head=document.createElement('div');
    head.className='sc-head';
    head.innerHTML='<span class="sc-ico">'+lib.icon+'</span>'+
      '<span class="sc-label">'+esc(step.label||lib.label)+'</span>'+
      '<span class="sc-type">'+step.type+'</span>'+
      '<span class="sc-actions">'+
        '<button title="选中/取消选中（可多选后打包）" onclick="event.stopPropagation();_stepEditor.toggleSelect(\''+(step.id||'')+'\')">☑</button>'+
        '<button title="展开/收起参数" onclick="_stepEditor.toggleExpand(this)">⚙</button>'+
        '<button title="上移" onclick="_stepEditor.move('+idx+',-1,\''+this._arrId(parentArr)+'\')">↑</button>'+
        '<button title="下移" onclick="_stepEditor.move('+idx+',1,\''+this._arrId(parentArr)+'\')">↓</button>'+
        '<button title="复制" onclick="_stepEditor.duplicate('+idx+',\''+this._arrId(parentArr)+'\')">⧉</button>'+
        '<button title="删除" onclick="_stepEditor.remove('+idx+',\''+this._arrId(parentArr)+'\')">✕</button>'+
      '</span>';
    head.addEventListener('click',function(e){
      if(e.target.tagName==='BUTTON')return;
      self.toggleExpand(head.querySelector('button'));
    });
    card.appendChild(head);
    // body（参数表单）
    var body=document.createElement('div');
    body.className='sc-body';
    body.innerHTML=this._renderParams(step);
    card.appendChild(body);
    // 拖拽排序
    card.addEventListener('dragstart',function(e){
      e.dataTransfer.setData('text/plain','move:'+idx+':'+self._arrId(parentArr));
      e.dataTransfer.effectAllowed='move';
      card.classList.add('dragging');
    });
    card.addEventListener('dragend',function(){card.classList.remove('dragging');});
    card.addEventListener('dragover',function(e){
      e.preventDefault();
      card.classList.add('drag-over');
    });
    card.addEventListener('dragleave',function(){card.classList.remove('drag-over');});
    card.addEventListener('drop',function(e){
      e.preventDefault();
      e.stopPropagation(); // 关键：阻止冒泡到外层卡片/容器，避免重复添加
      card.classList.remove('drag-over');
      self._handleDrop(e,parentArr,idx);
    });
    // loop/group 子步骤
    if(isContainer&&step.params&&step.params.children){
      var childWrap=document.createElement('div');
      childWrap.className='step-children';
      this._renderStepList(childWrap,step.params.children);
      card.appendChild(childWrap);
    }
    return card;
  },
  _path:function(arr){
    // 用数组长度作为标识（顶层是 _steps，子层是某 loop 的 children）
    // 这里简化：顶层 path='root'，子层 path='loop:<idx>'
    return arr===this._steps?'root':'child';
  },
  _renderParams:function(step){
    var p=step.params||{};
    var h='';
    if(step.type==='open_app'){
      h+='<div class="form-group"><label>包名</label><input type="text" class="form-control" data-key="package" value="'+esc(p.package||'')+'" placeholder="如 com.ss.android.ugc.aweme"></div>';
      h+='<div class="form-row"><div class="form-group form-check"><input type="checkbox" data-key="wait_home" '+(p.wait_home?'checked':'')+'><label>等待进入首页</label></div>';
      h+='<div class="form-group"><label>首页特征词</label><input type="text" class="form-control" data-key="home_feature" value="'+esc(p.home_feature||'')+'" placeholder="如 拍摄"></div></div>';
    }else if(step.type==='swipe'){
      h+='<div class="form-row"><div class="form-group"><label>方向</label><select class="form-control" data-key="direction">'+
        ['up','down','left','right'].map(function(d){return '<option value="'+d+'"'+(p.direction===d?' selected':'')+'>'+d+'</option>';}).join('')+'</select></div>';
      h+='<div class="form-group"><label>最短时长(秒)</label><input type="number" class="form-control" data-key="duration_min" value="'+(p.duration_min||0.25)+'" step="0.05" min="0.05"></div>';
      h+='<div class="form-group"><label>最长时长(秒)</label><input type="number" class="form-control" data-key="duration_max" value="'+(p.duration_max||0.50)+'" step="0.05" min="0.05"></div></div>';
    }else if(step.type==='click'){
      h+='<div class="form-row"><div class="form-group"><label>选择器类型</label><select class="form-control" data-key="selector_type">'+
        ['xpath','description','text','resourceId','descriptionContains','className'].map(function(d){return '<option value="'+d+'"'+(p.selector_type===d?' selected':'')+'>'+d+'</option>';}).join('')+'</select></div>';
      h+='<div class="form-group" style="grid-column:span 2"><label>选择器值</label><div class="sel-picker"><input type="text" class="form-control" data-key="selector_value" value="'+esc(p.selector_value||'')+'" placeholder="如 点赞"><button class="btn btn-xs btn-pick" onclick="_stepEditor.openPicker(this)">抓取元素</button></div></div></div>';
      h+='<div class="form-group"><label>等待超时(秒)</label><input type="number" class="form-control" data-key="wait_timeout" value="'+(p.wait_timeout||2)+'" step="0.5" min="0.5"></div>';
    }else if(step.type==='wait'){
      h+='<div class="form-row"><div class="form-group"><label>最短(秒)</label><input type="number" class="form-control" data-key="min" value="'+(p.min||1.0)+'" step="0.5" min="0.1"></div>';
      h+='<div class="form-group"><label>最长(秒)</label><input type="number" class="form-control" data-key="max" value="'+(p.max||3.0)+'" step="0.5" min="0.1"></div></div>';
    }else if(step.type==='input_text'){
      const im=p.mode==='fixed'?'fixed':'random';
      h+='<div class="form-group"><label>输入模式</label><select class="form-control" data-key="mode" onchange="_stepEditor._toggleInputMode(this)">'+
        '<option value="random"'+(im==='random'?' selected':'')+'>随机候选</option>'+
        '<option value="fixed"'+(im==='fixed'?' selected':'')+'>指定文字</option></select></div>';
      h+='<div class="form-group" data-mode="random" style="display:'+(im==='random'?'block':'none')+'"><label>候选文字（每行一个，随机选一条）</label><textarea class="form-control" data-key="texts" rows="4" style="font-family:monospace;min-height:80px">'+esc(p.texts||'你好\n有趣\n支持')+'</textarea></div>';
      h+='<div class="form-group" data-mode="fixed" style="display:'+(im==='fixed'?'block':'none')+'"><label>指定文字</label><input type="text" class="form-control" data-key="fixed_text" value="'+esc(p.fixed_text||'')+'"></div>';
      h+='<div class="help">需先用"点击元素"步骤定位到输入框，本步骤只负责输入文字</div>';
    }else if(step.type==='loop'){
      const lm=p.loop_mode==='time'?'time':'rounds';
      h+='<div class="form-row"><div class="form-group"><label>循环方式</label><select class="form-control" data-key="loop_mode" onchange="_stepEditor._toggleLoopMode(this)">'+
        '<option value="rounds"'+(lm==='rounds'?' selected':'')+'>按轮次</option>'+
        '<option value="time"'+(lm==='time'?' selected':'')+'>按时间</option></select></div>'+
        '<div class="form-group" data-lmode="rounds" style="display:'+(lm==='rounds'?'block':'none')+'"><label>最大循环次数</label><input type="number" class="form-control" data-key="max_iterations" value="'+(p.max_iterations||10)+'" min="1" max="100000"></div>'+
        '<div class="form-group" data-lmode="time" style="display:'+(lm==='time'?'block':'none')+'"><label>循环时长(秒)</label><input type="number" class="form-control" data-key="loop_duration" value="'+(p.loop_duration||600)+'" min="1"></div></div>';
      h+='<div class="help">将下方子步骤（拖拽到本卡片内）循环执行指定轮次或时长；按时间时配合"运行时长上限"看预计结束时间</div>';
    }else if(step.type==='group'){
      h+='<div class="help">动作组：按顺序执行下方子步骤一次。把多个步骤打包成一个可复用的整体。</div>';
      h+='<div class="form-group"><button class="btn btn-xs btn-primary" onclick="_stepEditor.saveAsCustomAction()">存为自定义动作</button> <span class="help" style="display:inline">把本组步骤保存到左侧自定义动作库，方便复用</span></div>';
    }
    // 共享：触发概率（所有步骤通用，0~100）
    h+='<div class="form-row" style="margin-top:8px"><div class="form-group"><label>触发概率(%)</label><input type="number" class="form-control" data-key="probability" value="'+(p.probability!=null?p.probability:100)+'" min="0" max="100"><div class="help">0~100，&lt;100 表示按概率执行（如 30=隔几次才触发一次，适合"偶尔点赞"）</div></div></div>';
    // 可编辑 label
    h+='<div class="form-group"><label>步骤名称（可选）</label><input type="text" class="form-control" data-key="_label" value="'+esc(step.label||'')+'" placeholder="留空用默认"></div>';
    return h;
  },
  _bindDropZone:function(container,arr){
    // 常驻容器（#se-canvas）多次重渲染会累积 drop 监听 → 拖一次添加多个。
    // 用 dataset 标记只绑定一次；数组引用用 WeakMap 每次更新。
    if(!this._dropArrs)this._dropArrs=new WeakMap();
    this._dropArrs.set(container,arr);
    if(container.dataset.dropBound)return;
    container.dataset.dropBound='1';
    var self=this;
    // 画布空白处也能接收 drop，拖入时高亮提示
    container.addEventListener('dragover',function(e){
      e.preventDefault();
      container.classList.add('drag-over');
    });
    container.addEventListener('dragleave',function(e){
      if(!container.contains(e.relatedTarget))container.classList.remove('drag-over');
    });
    container.addEventListener('drop',function(e){
      e.preventDefault();
      e.stopPropagation(); // 阻止冒泡到外层卡片/容器，避免重复添加
      container.classList.remove('drag-over');
      if(e.target===container||e.target.classList.contains('se-empty')){
        self._handleDrop(e,self._dropArrs.get(container),-1);
      }
    });
  },
  _handleDrop:function(e,arr,idx){
    var self=this;
    var data=e.dataTransfer.getData('text/plain');
    if(!data)return;
    // drop 处理中同步重建 DOM 会打断拖拽事件，可能被浏览器重发 drop 导致重复添加。
    // 延迟到下一帧渲染，保证一次拖入只加一次。
    function rerender(){ setTimeout(function(){self._renderCanvas();},0); }
    if(data.startsWith('move:')){
      // 内部排序
      var parts=data.split(':');
      var fromIdx=parseInt(parts[1]);
      var fromPath=parts[2];
      if(fromPath===this._arrId(arr)&&fromIdx!==idx){
        this._syncFromDom();
        var moved=arr.splice(fromIdx,1)[0];
        if(idx<0)arr.push(moved);
        else if(fromIdx<idx)arr.splice(idx-1,0,moved);
        else arr.splice(idx,0,moved);
        rerender();
      }
    }else if(data.startsWith('action:')){
      // 从自定义动作库拖入 → 展开为 group 步骤
      var actionId=data.substring(7);
      var action=_customActions.find(function(a){return a.id===actionId;});
      if(action&&action.steps&&action.steps.length){
        var ns=this._makeStep({type:'group',label:action.name,icon:action.icon||'📦',params:{children:[]}});
        ns.label=action.name;
        ns.params.children=JSON.parse(JSON.stringify(action.steps));
        this._ensureIds(ns.params.children);
        if(idx<0||idx>=arr.length)arr.push(ns);
        else arr.splice(idx,0,ns);
        rerender();
      }
    }else if(data.startsWith('type:')){
      // 从系统操作库拖入
      var type=data.substring(5);
      var lib=_findLib(type);
      if(lib){
        var ns2=this._makeStep(lib);
        if(idx<0||idx>=arr.length)arr.push(ns2);
        else arr.splice(idx,0,ns2);
        rerender();
      }
    }
  },
  _makeStep:function(lib){
    return {id:_newStepId(),type:lib.type,label:lib.label,params:JSON.parse(JSON.stringify(lib.params))};
  },
  addStep:function(type){
    var lib=_findLib(type);
    if(!lib)return;
    this._syncFromDom();
    this._steps.push(this._makeStep(lib));
    this._renderCanvas();
  },
  addCustomAction:function(actionId){
    var action=_customActions.find(function(a){return a.id===actionId;});
    if(!action||!action.steps||!action.steps.length)return;
    this._syncFromDom();
    var ns=this._makeStep({type:'group',label:action.name,icon:action.icon||'📦',params:{children:[]}});
    ns.label=action.name;
    ns.params.children=JSON.parse(JSON.stringify(action.steps));
    this._ensureIds(ns.params.children);
    this._steps.push(ns);
    this._renderCanvas();
  },
  delCustomAction:function(actionId){
    if(!confirm('确定删除这个自定义动作？'))return;
    fetch('/api/custom_actions/'+actionId,{method:'DELETE'}).then(function(r){return r.json();}).then(function(res){
      if(res.ok){_loadCustomActions();toast('已删除','success');}
      else toast(res.error||'删除失败','error');
    });
  },
  toggleSelect:function(stepId){
    this._syncFromDom();
    if(!this._selected)this._selected=[];
    var i=this._selected.indexOf(stepId);
    if(i>=0)this._selected.splice(i,1);
    else this._selected.push(stepId);
    this._renderCanvas();
    // 更新工具栏按钮状态
    var bar=document.getElementById('se-pack-btn');
    if(bar)bar.disabled=this._selected.length<1;
  },
  saveAsCustomAction:function(){
    // 从 group 步骤的"存为自定义动作"按钮调用：收集当前展开的 group 步骤的 children
    // 或从选中步骤收集
    var stepsToSave=[];
    if(this._selected&&this._selected.length){
      // 从选中步骤收集
      stepsToSave=this._collectByIds(this._steps,this._selected);
    }
    if(!stepsToSave.length){
      toast('请先用 ☑ 选中要打包的步骤','error');
      return;
    }
    var name=prompt('输入动作名称：','我的动作');
    if(!name)return;
    var self=this;
    fetch('/api/custom_actions',{method:'POST',headers:{'Content-Type':'application/json'},
      body:JSON.stringify({name:name,steps:stepsToSave})})
      .then(function(r){return r.json();})
      .then(function(res){
        if(res.ok){
          toast('已保存到自定义动作库','success');
          self._selected=[];
          _loadCustomActions();
          self._renderCanvas();
        }else toast(res.error||'保存失败','error');
      });
  },
  _collectByIds:function(steps,ids){
    // 收集选中的步骤（深拷贝，去掉 id）
    var result=[];
    steps.forEach(function(s){
      if(ids.indexOf(s.id)>=0){
        var copy=JSON.parse(JSON.stringify(s));
        result.push(copy);
      }
    });
    return result;
  },
  toggleExpand:function(btn){
    var card=btn.closest('.step-card');
    card.classList.toggle('expanded');
  },
  _toggleInputMode:function(sel){
    var body=sel.closest('.sc-body');
    var mode=sel.value;
    body.querySelectorAll('[data-mode]').forEach(function(g){
      g.style.display=g.dataset.mode===mode?'block':'none';
    });
  },
  _toggleLoopMode:function(sel){
    var body=sel.closest('.sc-body');
    var mode=sel.value;
    body.querySelectorAll('[data-lmode]').forEach(function(g){
      g.style.display=g.dataset.lmode===mode?'block':'none';
    });
  },
  // 给数组分配唯一 id，用于 move/duplicate/remove/拖拽定位到正确的父数组
  _arrId:function(arr){
    if(arr===this._steps)return 'root';
    if(!this._arrIdMap)this._arrIdMap=new WeakMap();
    if(!this._arrById)this._arrById={};
    if(!this._arrIdMap.has(arr)){
      var id='arr_'+(++this._arrCounter);
      this._arrIdMap.set(arr,id);
      this._arrById[id]=arr;
    }
    return this._arrIdMap.get(arr);
  },
  _resolveArr:function(path){
    if(path==='root')return this._steps;
    return this._arrById&&this._arrById[path];
  },
  move:function(idx,dir,path){
    this._syncFromDom(); // 先同步 DOM 编辑，避免重渲染丢内容
    var arr=this._resolveArr(path);
    if(!arr)return;
    var ni=idx+dir;
    if(ni<0||ni>=arr.length)return;
    var tmp=arr[ni];arr[ni]=arr[idx];arr[idx]=tmp;
    this._renderCanvas();
  },
  duplicate:function(idx,path){
    this._syncFromDom();
    var arr=this._resolveArr(path);
    if(!arr)return;
    var copy=JSON.parse(JSON.stringify(arr[idx]));
    copy.id=_newStepId();
    this._ensureIds([copy]);
    arr.splice(idx+1,0,copy);
    this._renderCanvas();
  },
  remove:function(idx,path){
    this._syncFromDom();
    var arr=this._resolveArr(path);
    if(!arr)return;
    arr.splice(idx,1);
    this._renderCanvas();
  },
  collect:function(){
    // 先把当前 DOM 上的参数值同步回 _steps
    var self=this;
    this._syncParams(this._canvas,this._steps);
    return JSON.parse(JSON.stringify(this._steps));
  },
  validate:function(steps){
    // 校验步骤配置，返回警告列表
    var warnings=[];
    function check(arr,prefix){
      arr.forEach(function(s,i){
        var name=prefix?(prefix+'.'+(i+1)):('步骤'+(i+1));
        var label=s.label||s.type;
        if(s.type==='click'){
          if(!s.params.selector_value){
            warnings.push(name+' "'+label+'": 选择器值为空，点击步骤会跳过。请用"抓取元素"按钮选择目标。');
          }
        }else if(s.type==='open_app'){
          if(!s.params.package){
            warnings.push(name+' "'+label+'": 包名为空，无法启动App');
          }
        }else if(s.type==='input_text'){
          if(s.params.mode==='fixed'&&!s.params.fixed_text){
            warnings.push(name+' "'+label+'": 指定文字为空');
          }else if(s.params.mode==='random'&&!s.params.texts){
            warnings.push(name+' "'+label+'": 候选文字为空');
          }
        }
        if(s.params&&s.params.children&&s.params.children.length){
          check(s.params.children,name+' 子步骤');
        }
      });
    }
    check(steps,'');
    return warnings;
  },
  _syncParams:function(container,steps){
    var self=this;
    var cards=container.querySelectorAll(':scope > .step-card');
    cards.forEach(function(card,i){
      if(!steps[i])return;
      // 只读本卡片直接子级的 .sc-body，避免把嵌套子步骤的输入误写进本步骤 params
      var inputs=card.querySelectorAll(':scope > .sc-body [data-key]');
      inputs.forEach(function(inp){
        var key=inp.dataset.key;
        if(inp.type==='checkbox'){
          steps[i].params[key]=inp.checked;
        }else if(inp.type==='number'){
          steps[i].params[key]=parseFloat(inp.value)||0;
        }else{
          if(key==='_label'){
            steps[i].label=inp.value||steps[i].label;
          }else{
            steps[i].params[key]=inp.value;
          }
        }
      });
      // 递归子步骤
      var childWrap=card.querySelector(':scope > .step-children');
      if(childWrap&&steps[i].params&&steps[i].params.children){
        self._syncParams(childWrap,steps[i].params.children);
      }
    });
  },
  // 把画布 DOM 上的参数同步回 _steps，并自动保存草稿（操作前调用防丢失）
  _syncFromDom:function(){
    this._syncParams(this._canvas,this._steps);
    this._autosave();
  },
  _autosave:function(){
    try{localStorage.setItem('se_draft_'+this._draftKey,JSON.stringify(this._steps));}catch(e){}
  },
  _loadDraft:function(){
    try{
      var d=localStorage.getItem('se_draft_'+this._draftKey);
      if(d)return JSON.parse(d);
    }catch(e){}
    return null;
  },
  clearDraft:function(){
    try{localStorage.removeItem('se_draft_'+this._draftKey);}catch(e){}
  },
  // ================== 元素抓取 ==================
  openPicker:function(btn){
    var input=btn.previousElementSibling;
    this._elTargetInput=input;
    // 直接弹设备选择页（独立模态框，不影响任务编辑窗口）
    this._showDevicePicker();
  },
  // 步骤1：设备选择页
  _showDevicePicker:function(){
    document.getElementById('el-picker-title').textContent='抓取元素 - 选择设备';
    document.getElementById('el-picker-body').innerHTML='<div class="el-device-grid"><div class="egd-title">选择要抓取元素的设备</div><div id="el-device-list">加载中...</div></div>';
    document.getElementById('el-picker-footer').innerHTML='<button class="btn" onclick="closeElPicker()">取消</button>';
    document.getElementById('el-picker-overlay').classList.add('show');
    fetch('/api/uiauto/devices').then(function(r){return r.json();}).then(function(res){
      var list=document.getElementById('el-device-list');
      if(!res.ok){list.innerHTML='<div class="se-empty">'+esc(res.error||'获取设备失败')+'<br><button class="btn btn-sm" style="margin-top:10px" onclick="_stepEditor._showDevicePicker()">重试</button></div>';return;}
      var devices=res.devices||[];
      if(!devices.length){list.innerHTML='<div class="se-empty">uiauto2 未发现已连接设备</div>';return;}
      list.innerHTML=devices.map(function(d){
        return '<div class="el-device-card" onclick="_stepEditor._showElPicker(\''+esc(d.serial)+'\')">'+
          '<div class="edc-icon">📱</div>'+
          '<div class="edc-info"><div class="edc-serial">'+esc(d.serial)+'</div>'+
          '<div class="edc-model">'+esc(d.model||d.product||'')+'</div></div>'+
          '<span class="edc-status">'+esc(d.status||'device')+'</span></div>';
      }).join('');
    }).catch(function(e){
      document.getElementById('el-device-list').innerHTML='<div class="se-empty">请求失败: '+esc(e)+'<br><button class="btn btn-sm" style="margin-top:10px" onclick="_stepEditor._showDevicePicker()">重试</button></div>';
    });
  },
  // 步骤2：选中设备后，显示截图 + 元素树
  _showElPicker:function(serial){
    var self=this;
    self._elSerial=serial;
    document.getElementById('el-picker-title').textContent='抓取元素 - '+serial;
    document.getElementById('el-picker-body').innerHTML=
      '<div class="el-picker-main">'+
        '<div class="el-shot-wrap">'+
          '<div class="el-shot-toolbar">'+
            '<button class="btn" onclick="_stepEditor._refreshShot()">刷新截图</button>'+
            '<span class="el-shot-info" id="el-shot-info">加载中...</span>'+
          '</div>'+
          '<div class="el-shot-container" id="el-shot-container">'+
            '<div class="el-shot-loading">正在获取截图...</div>'+
          '</div>'+
        '</div>'+
        '<div class="el-list-wrap">'+
          '<input type="text" class="el-picker-search" id="el-search" placeholder="搜索 resource-id/text/description..." oninput="_stepEditor._filterEl(this.value)">'+
          '<div class="el-picker-list" id="el-list"><div class="se-empty">加载元素树...</div></div>'+
        '</div>'+
      '</div>';
    document.getElementById('el-picker-footer').innerHTML=
      '<button class="btn" onclick="_stepEditor._showDevicePicker()">← 返回选设备</button>'+
      '<button class="btn" onclick="closeElPicker()">取消</button>';
    // 加载截图和元素树
    self._refreshShot();
    fetch('/api/uiauto/elements?serial='+encodeURIComponent(serial))
      .then(function(r){return r.json();})
      .then(function(data){
        if(!data.ok){
          document.getElementById('el-list').innerHTML='<div class="se-empty">'+esc(data.error||'抓取失败')+'</div>';
          return;
        }
        self._elData=data.elements||[];
        self._renderEl(self._elData);
        self._renderOverlays();
      })
      .catch(function(e){
        document.getElementById('el-list').innerHTML='<div class="se-empty">请求失败: '+esc(e)+'</div>';
      });
  },
  // 刷新截图
  _refreshShot:function(){
    var serial=this._elSerial;
    if(!serial)return;
    var container=document.getElementById('el-shot-container');
    if(!container)return;
    container.innerHTML='<div class="el-shot-loading">正在获取截图...</div>';
    var info=document.getElementById('el-shot-info');
    if(info)info.textContent='加载中...';
    var self=this;
    var img=new Image();
    img.onload=function(){
      container.innerHTML='';
      container.appendChild(img);
      var infoEl=document.getElementById('el-shot-info');
      if(infoEl)infoEl.textContent=img.naturalWidth+'x'+img.naturalHeight;
      // 截图加载完后重新渲染元素边界框
      self._renderOverlays();
    };
    img.onerror=function(){
      container.innerHTML='<div class="el-shot-loading">截图加载失败</div>';
      var infoEl=document.getElementById('el-shot-info');
      if(infoEl)infoEl.textContent='失败';
    };
    img.src='/api/uiauto/screenshot?serial='+encodeURIComponent(serial)+'&_='+Date.now();
  },
  // 在截图上渲染元素边界框（可点击）
  _renderOverlays:function(){
    var container=document.getElementById('el-shot-container');
    var img=container.querySelector('img');
    if(!img||!this._elData)return;
    var self=this;
    function draw(){
      // 清除旧 overlay 和旧点击处理
      container.querySelectorAll('.el-shot-overlay').forEach(function(o){o.remove();});
      container.onclick=null;
      var scaleX=img.clientWidth/img.naturalWidth;
      var scaleY=img.clientHeight/img.naturalHeight;
      // 图片在 container 里的偏移
      var imgOffsetX=img.offsetLeft;
      var imgOffsetY=img.offsetTop;
      var imgW=img.naturalWidth, imgH=img.naturalHeight;
      self._elData.forEach(function(el,i){
        if(!el.bounds)return;
        // bounds 格式 "[x1,y1][x2,y2]"
        var m=el.bounds.match(/\[(\d+),(\d+)\]\[(\d+),(\d+)\]/);
        if(!m)return;
        var x1=parseInt(m[1]),y1=parseInt(m[2]),x2=parseInt(m[3]),y2=parseInt(m[4]);
        var w=(x2-x1)*scaleX;
        var h=(y2-y1)*scaleY;
        if(w<4||h<4)return; // 太小不画
        // 跳过占满屏幕的容器：面积>90%屏幕，没有选择价值，还会盖住小元素
        if((x2-x1)*(y2-y1) > imgW*imgH*0.9)return;
        var ov=document.createElement('div');
        ov.className='el-shot-overlay';
        ov.setAttribute('data-idx',i);
        ov.style.left=(imgOffsetX+x1*scaleX)+'px';
        ov.style.top=(imgOffsetY+y1*scaleY)+'px';
        ov.style.width=w+'px';
        ov.style.height=h+'px';
        ov.title=el.name||el.class||'';
        container.appendChild(ov);
      });
      // 点击截图：按 bounds 命中测试，选中最小的（最深的）元素，
      // 而不是被 DOM 层叠中的大容器/大兄弟挡住
      container.onclick=function(e){
        var im=container.querySelector('img');
        if(!im)return;
        var r=im.getBoundingClientRect();
        var px=(e.clientX-r.left)/scaleX; // 换算回原始分辨率坐标
        var py=(e.clientY-r.top)/scaleY;
        var best=-1,bestArea=Infinity;
        self._elData.forEach(function(el,i){
          var mb=el.bounds&&el.bounds.match(/\[(\d+),(\d+)\]\[(\d+),(\d+)\]/);
          if(!mb)return;
          var a=parseInt(mb[1]),b=parseInt(mb[2]),c=parseInt(mb[3]),dd=parseInt(mb[4]);
          if(px>=a&&px<=c&&py>=b&&py<=dd){
            var area=(c-a)*(dd-b);
            if(area<bestArea){bestArea=area;best=i;}
          }
        });
        if(best>=0)self._highlightEl(best);
      };
    }
    if(img.complete&&img.naturalWidth>0)draw();
    else img.onload=draw;
  },
  // 高亮元素（截图框 + 列表项联动）
  _highlightEl:function(i){
    // 清除旧高亮（只在 el-picker-overlay 范围内查找）
    var picker=document.getElementById('el-picker-overlay');
    picker.querySelectorAll('.el-shot-overlay.active').forEach(function(o){o.classList.remove('active');});
    picker.querySelectorAll('.el-picker-item.active').forEach(function(o){o.classList.remove('active');});
    // 高亮当前（overlay 用 data-idx 查找，渲染时跳过了全屏容器，索引不再一一对应）
    var overlay=picker.querySelector('.el-shot-overlay[data-idx="'+i+'"]');
    if(overlay)overlay.classList.add('active');
    // 列表项用 data-idx 查找（过滤后顺序可能不同）
    var item=picker.querySelector('.el-picker-item[data-idx="'+i+'"]');
    if(item){
      item.classList.add('active');
      item.scrollIntoView({block:'nearest',behavior:'smooth'});
    }
  },
  _renderEl:function(list){
    var self=this;
    var html=list.map(function(el){
      var idx=self._elData.indexOf(el);
      var attrs=[];
      if(el.resource_id)attrs.push('<span>id:'+esc(el.resource_id)+'</span>');
      if(el.text)attrs.push('<span>text:'+esc(el.text)+'</span>');
      if(el.description)attrs.push('<span>desc:'+esc(el.description)+'</span>');
      var indent='  '.repeat(Math.min(el.depth||0,6));
      return '<div class="el-picker-item" data-idx="'+idx+'" onclick="_stepEditor._pickEl('+idx+')">'+
        '<span class="ep-depth">'+(el.depth||0)+'</span>'+
        '<div class="ep-info"><div class="ep-name">'+indent+esc(el.name||el.class||'')+'</div>'+
        '<div class="ep-attrs">'+attrs.join('')+'</div></div>'+
        '<span class="ep-sel">'+esc(el.suggested.type)+'</span>'+
        (el.suggested&&el.suggested.broad?' <span class="label label-warning" title="无唯一属性，选择器可能误匹配其他元素，建议选带文字/id 的元素">⚠宽泛</span>':'')+
      '</div>';
    }).join('');
    document.getElementById('el-list').innerHTML=html||'<div class="se-empty">无元素</div>';
  },
  _filterEl:function(kw){
    if(!kw){this._renderEl(this._elData);this._renderOverlays();return;}
    kw=kw.toLowerCase();
    var f=this._elData.filter(function(el){
      return (el.resource_id&&el.resource_id.toLowerCase().includes(kw))||
             (el.text&&el.text.toLowerCase().includes(kw))||
             (el.description&&el.description.toLowerCase().includes(kw));
    });
    this._renderEl(f);
  },
  _pickEl:function(i){
    var el=this._elData[i];
    if(!el||!this._elTargetInput)return;
    // 填入推荐选择器值，并切换选择器类型
    this._elTargetInput.value=el.suggested.value;
    var sel=this._elTargetInput.closest('.sc-body').querySelector('[data-key="selector_type"]');
    if(sel)sel.value=el.suggested.type;
    // 程序赋值不会触发 input 事件，手动同步回 _steps 防丢失
    this._syncFromDom();
    // 只关闭抓取元素弹窗，不影响任务编辑窗口
    closeElPicker();
    showToast('已填入: '+el.suggested.type+'='+el.suggested.value,'success');
  }
};

async function saveTask(jobId){
  const name=document.getElementById('f-name').value.trim();
  if(!name){showToast('任务名不能为空','error');return;}
  let params={};
  const tt=document.getElementById('f-task_type').value;
  if(tt==='generic_steps'){
    // 通用步骤任务：从步骤编辑器收集
    const steps=_stepEditor.collect();
    if(!steps.length){showToast('请至少添加一个步骤','error');return;}
    // 校验：click 步骤的 selector_value 不能为空
    var warnings=_stepEditor.validate(steps);
    if(warnings.length){
      if(!confirm('步骤配置有问题：\n\n'+warnings.join('\n')+'\n\n确定要保存吗？'))return;
    }
    const mdEl=document.getElementById('f-max_duration');
    params={max_duration:mdEl?parseInt(mdEl.value)||0:0,steps:steps};
  }else{
    try{params=JSON.parse(document.getElementById('f-params').value||'{}');}
    catch(e){showToast('参数 JSON 格式错误','error');return;}
  }

  const targetMode=document.getElementById('f-target_mode').value;
  const target={mode:targetMode};
  if(targetMode==='group')target.group_name=document.getElementById('f-target_group').value;
  if(targetMode==='serial')target.serial=document.getElementById('f-target_serial').value;

  const schedMode=document.getElementById('f-schedule_mode').value;
  let schedule={mode:'once'};
  if(schedMode==='cron'){
    schedule={mode:'cron',cron:document.getElementById('f-schedule_cron').value.trim()};
  }else if(schedMode==='cron_stop'){
    schedule={mode:'cron_stop',
              cron:document.getElementById('f-schedule_cron').value.trim(),
              stop_cron:document.getElementById('f-schedule_stop_cron').value.trim()};
  }

  const data={
    name:name,
    task_type:document.getElementById('f-task_type').value,
    enabled:document.getElementById('f-enabled').checked,
    target:target,
    params:params,
    schedule:schedule,
    retry:{max_attempts:Math.max(1,parseInt(document.getElementById('f-retry_attempts').value)||1),
           delay:Math.max(10,parseInt(document.getElementById('f-retry_delay').value)||60)}
  };

  if(jobId){
    const r=await apiPut('/api/jobs/'+jobId,data);
    handleResult(r,()=>{_stepEditor.clearDraft();closeModal();loadTasks();});
  }else{
    const r=await apiPost('/api/jobs',data);
    handleResult(r,()=>{_stepEditor.clearDraft();closeModal();loadTasks();});
  }
}

async function deleteTask(jobId){
  if(!confirm('确认删除此任务吗？'))return;
  const r=await apiDelete('/api/jobs/'+jobId);
  handleResult(r,()=>loadTasks());
}

// ================== 自定义动作管理 ==================
async function loadCustomActions(){
  const r=await apiGet('/api/custom_actions'); if(!r||!r.ok)return;
  _customActions=r.actions||[];
  setListPager('actions',{
    data:()=>_customActions,
    filter:(a,kw)=>((a.name||'').toLowerCase().includes(kw)),
    render:renderActionRow,
    tbody:'tb-actions',pager:'pager-actions',pageSize:10,
    empty:'<tr><td colspan="5" class="empty">暂无自定义动作，可点击"新建动作"或用任务编辑器☑选中步骤打包</td></tr>'
  });
  applyListPager('actions');
  initListSearch('actions','search-actions');
  _stepEditor._renderLib(); // 刷新步骤编辑器左侧动作库
}
function renderActionRow(a){
  const n=(a.steps||[]).length;
  return '<tr>'+
    '<td style="font-size:20px">'+esc(a.icon||'📦')+'</td>'+
    '<td><strong>'+esc(a.name)+'</strong></td>'+
    '<td>'+n+'</td>'+
    '<td style="font-size:12px;color:#94a3b8">'+esc(a.created_at||'-')+'</td>'+
    '<td>'+
      '<button class="btn btn-xs" onclick="openActionModal(\''+a.id+'\')">编辑</button> '+
      '<button class="btn btn-danger btn-xs" onclick="deleteAction(\''+a.id+'\')">删除</button>'+
    '</td>'+
  '</tr>';
}
function openActionModal(actionId){
  const action=actionId?_customActions.find(a=>a.id===actionId):null;
  const isEdit=!!action;
  document.getElementById('action-modal-title').textContent=isEdit?'编辑动作':'新建动作';
  document.getElementById('action-modal-body').innerHTML=
    '<div class="form-row">'+
      '<div class="form-group"><label>动作名称</label><input type="text" class="form-control" id="a-name" value="'+esc(action?action.name:'')+'" placeholder="如：点赞动作"></div>'+
      '<div class="form-group"><label>图标</label><input type="text" class="form-control" id="a-icon" value="'+esc(action?(action.icon&&action.icon!=='📦'?action.icon:''):'')+'" placeholder="📦" style="width:80px"></div>'+
    '</div>'+
    '<div class="help" style="margin-bottom:8px">用下方步骤编辑器编排动作内容，保存后可拖入任务步骤编辑器复用</div>'+
    '<div class="step-editor" style="display:block">'+
      '<div class="se-head"><span>动作步骤</span><span style="font-size:11px;color:var(--text-light);margin-left:12px">支持循环/分组/概率触发/拖拽排序</span></div>'+
      '<div class="se-body">'+
        '<div class="se-lib" id="action-lib"><div class="lib-title">操作库</div></div>'+
        '<div class="se-canvas" id="action-canvas"></div>'+
      '</div>'+
    '</div>';
  document.getElementById('action-modal-footer').innerHTML=
    '<button class="btn" onclick="closeActionModal()">取消</button>'+
    '<button class="btn btn-primary" onclick="saveAction('+(isEdit?'\''+actionId+'\'':'null')+')">保存动作</button>';
  // 用独立画布初始化步骤编辑器（不与任务编辑器冲突）
  _stepEditor.init(action&&action.steps?action.steps:[], 0, 'action:'+(actionId||'new'), 'action-canvas', 'action-lib');
  document.getElementById('action-modal-overlay').classList.add('show');
}
async function saveAction(actionId){
  const name=document.getElementById('a-name').value.trim();
  if(!name){showToast('动作名不能为空','error');return;}
  const icon=document.getElementById('a-icon').value.trim()||'📦';
  const steps=_stepEditor.collect();
  if(!steps.length){showToast('至少需要1个步骤','error');return;}
  const data={name:name,icon:icon,steps:steps};
  if(actionId){
    const r=await apiPut('/api/custom_actions/'+actionId,data);
    handleResult(r,()=>{_stepEditor.clearDraft();closeActionModal();loadCustomActions();});
  }else{
    const r=await apiPost('/api/custom_actions',data);
    handleResult(r,()=>{_stepEditor.clearDraft();closeActionModal();loadCustomActions();});
  }
}
async function deleteAction(id){
  if(!confirm('确认删除此动作？'))return;
  const r=await apiDelete('/api/custom_actions/'+id);
  handleResult(r,()=>loadCustomActions());
}
function closeActionModal(){
  document.getElementById('action-modal-overlay').classList.remove('show');
}

// ================== Tab 3: 分组 ==================
async function loadGroups(){
  const r=await apiGet('/api/groups');if(!r)return;
  _groupsList=r.groups||[];
  const dr=await apiGet('/api/devices');
  _devicesList=dr?dr.devices||[]:[];
  renderGroupTable();
}

function renderGroupTable(){
  const groups=_groupsList||[];
  setListPager('groups',{
    data:()=>groups,
    filter:(g,kw)=>((g.name||'').toLowerCase().includes(kw)||(g.description||'').toLowerCase().includes(kw)||(g.serials||[]).join(' ').toLowerCase().includes(kw)),
    render:renderGroupRow,
    tbody:'tb-groups',pager:'pager-groups',pageSize:10,
    empty:'<tr><td colspan="5" class="empty">暂无分组，点击"新建分组"创建</td></tr>'
  });
  applyListPager('groups');
  initListSearch('groups','search-groups');
}
function renderGroupRow(g){
  const serials=g.serials||[];
  return '<tr>'+
    '<td><strong>'+esc(g.name)+'</strong></td>'+
    '<td>'+esc(g.description||'-')+'</td>'+
    '<td>'+serials.length+'</td>'+
    '<td class="text-muted" style="max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap">'+(serials.length?serials.map(esc).join(', '):'-')+'</td>'+
    '<td>'+
      '<button class="btn btn-xs" onclick="openGroupModal(\''+esc(g.name)+'\')">编辑</button>'+
      '<button class="btn btn-danger btn-xs" onclick="deleteGroup(\''+esc(g.name)+'\')">删除</button>'+
    '</td>'+
  '</tr>';
}

function openGroupModal(name){
  const group=name?(_groupsList||[]).find(g=>g.name===name):null;
  const isEdit=!!group;
  document.getElementById('modal-title').textContent=isEdit?'编辑分组':'新建分组';
  const g=group||{name:'',description:'',serials:[]};
  const current= new Set(g.serials||[]);
  const allSerials=[...new Set([..._devicesList, ...(g.serials||[])])].sort();
  const deviceCheckboxes=allSerials.map(s=>
    '<label><input type="checkbox" value="'+esc(s)+'" '+(current.has(s)?'checked':'')+'>'+esc(s)+'</label>'
  ).join('');

  document.getElementById('modal-body').innerHTML=
    '<div class="form-group"><label>分组名</label><input type="text" class="form-control" id="g-name" value="'+esc(g.name)+'" placeholder="如：测试组" '+(isEdit?'readonly':'')+'></div>'+
    '<div class="form-group"><label>描述</label><input type="text" class="form-control" id="g-description" value="'+esc(g.description||'')+'" placeholder="可选"></div>'+
    '<div class="form-group"><label>设备列表（勾选属于此分组的设备）</label>'+
      '<div class="device-list">'+(deviceCheckboxes||'<div class="text-muted">暂无在线设备</div>')+'</div>'+
      '<div class="help">仅显示当前在线设备，已选设备即使离线也会保留</div>'+
    '</div>';

  document.getElementById('modal-footer').innerHTML=
    '<button class="btn" onclick="closeModal()">取消</button>'+
    '<button class="btn btn-primary" onclick="saveGroup('+(isEdit?'\''+esc(g.name)+'\'':'null')+')">'+(isEdit?'保存':'创建')+'</button>';

  showModal();
}

async function saveGroup(name){
  const newName=document.getElementById('g-name').value.trim();
  if(!newName){showToast('分组名不能为空','error');return;}
  const desc=document.getElementById('g-description').value;
  const serials=Array.from(document.querySelectorAll('.device-list input:checked')).map(c=>c.value);
  const data={name:newName,description:desc,serials:serials};

  if(name){
    const r=await apiPut('/api/groups/'+encodeURIComponent(name),data);
    handleResult(r,()=>{closeModal();loadGroups();});
  }else{
    const r=await apiPost('/api/groups',data);
    handleResult(r,()=>{closeModal();loadGroups();});
  }
}

async function deleteGroup(name){
  if(!confirm('确认删除分组"'+name+'"吗？'))return;
  const r=await apiDelete('/api/groups/'+encodeURIComponent(name));
  handleResult(r,()=>loadGroups());
}

// ================== Tab 4: 日志 ==================
async function loadLogs(){
  const file=document.getElementById('log-file').value;
  const lines=document.getElementById('log-lines').value;
  const r=await apiGet('/api/logs?file='+encodeURIComponent(file)+'&lines='+lines);
  if(!r||!r.ok)return;
  const content=r.content||'';
  // 简单着色
  const colored=esc(content)
    .replace(/\[ERROR\]/g,'<span class="log-err">[ERROR]</span>')
    .replace(/\[WARNING\]/g,'<span class="log-warn">[WARNING]</span>')
    .replace(/\[INFO\]/g,'<span class="log-info">[INFO]</span>');
  document.getElementById('log-content').innerHTML=colored||'<span class="text-muted">（空）</span>';
  document.getElementById('log-hint').textContent=file+' · '+content.split('\n').length+' 行';
  // 自动滚动到底部
  const el=document.getElementById('log-content');
  el.scrollTop=el.scrollHeight;
}

function toggleLogAuto(){
  if(_logTimer){clearInterval(_logTimer);_logTimer=null;}
  if(document.getElementById('log-auto').checked && _activeTab==='logs'){
    _logTimer=setInterval(loadLogs,3000);
  }
}

// ================== Tab 5: 用户 ==================
async function loadUsers(){
  const r=await apiGet('/api/users');if(!r)return;
  const users=r.users||[];
  setListPager('users',{
    data:()=>users,
    filter:(u,kw)=>(u.username||'').toLowerCase().includes(kw),
    render:renderUserRow,
    tbody:'tb-users',pager:'pager-users',pageSize:10,
    empty:'<tr><td colspan="4" class="empty">暂无用户</td></tr>'
  });
  applyListPager('users');
  initListSearch('users','search-users');
}
function renderUserRow(u){
  const admin=u.is_admin?'<span class="label label-primary">管理员</span>':'<span class="label label-default">普通</span>';
  return '<tr>'+
    '<td>'+u.id+'</td>'+
    '<td><strong>'+esc(u.username)+'</strong></td>'+
    '<td>'+admin+'</td>'+
    '<td>'+
      '<button class="btn btn-xs" onclick="openUserModal('+u.id+')">编辑</button>'+
      (u.username==='admin'?'':'<button class="btn btn-danger btn-xs" onclick="deleteUser('+u.id+')">删除</button>')+
    '</td>'+
  '</tr>';
}

function openUserModal(uid){
  const isEdit=!!uid;
  document.getElementById('modal-title').textContent=isEdit?'编辑用户':'新建用户';
  document.getElementById('modal-body').innerHTML=
    '<div class="form-group"><label>用户名</label><input type="text" class="form-control" id="u-username" '+(isEdit?'disabled':'')+' placeholder="用户名"></div>'+
    '<div class="form-group"><label>密码'+(isEdit?'（留空不修改）':'')+'</label><input type="password" class="form-control" id="u-password" placeholder="密码"></div>'+
    '<div class="form-group form-check"><input type="checkbox" id="u-is_admin" checked><label for="u-is_admin">管理员权限</label></div>';

  document.getElementById('modal-footer').innerHTML=
    '<button class="btn" onclick="closeModal()">取消</button>'+
    '<button class="btn btn-primary" onclick="saveUser('+(uid||'null')+')">'+(isEdit?'保存':'创建')+'</button>';

  if(isEdit){
    // 预填充（从表格数据获取）
    fetch('/api/users').then(r=>r.json()).then(r=>{
      const u=r.users.find(x=>x.id===uid);
      if(u){
        document.getElementById('u-username').value=u.username;
        document.getElementById('u-is_admin').checked=u.is_admin;
      }
    });
  }
  showModal();
}

async function saveUser(uid){
  const username=document.getElementById('u-username').value.trim();
  const password=document.getElementById('u-password').value;
  const is_admin=document.getElementById('u-is_admin').checked;

  if(uid){
    const data={is_admin:is_admin};
    if(password)data.password=password;
    const r=await apiPut('/api/users/'+uid,data);
    handleResult(r,()=>{closeModal();loadUsers();});
  }else{
    if(!username||!password){showToast('用户名和密码不能为空','error');return;}
    const r=await apiPost('/api/users',{username:username,password:password,is_admin:is_admin});
    handleResult(r,()=>{closeModal();loadUsers();});
  }
}

async function deleteUser(uid){
  if(!confirm('确认删除此用户吗？'))return;
  const r=await apiDelete('/api/users/'+uid);
  handleResult(r,()=>loadUsers());
}

// ================== Tab: 应用 ==================
let _apksCache=[];
let _installTimer=null;
let _devAppsData=[];

function fmtSize(b){
  if(!b)return '0 B';
  if(b<1024)return b+' B';
  if(b<1048576)return (b/1024).toFixed(1)+' KB';
  return (b/1048576).toFixed(1)+' MB';
}

async function loadApks(){
  const r=await apiGet('/api/apks');if(!r||!r.ok)return;
  const apks=r.apks||[];
  _apksCache=apks;
  document.getElementById('apk-hint').textContent='共 '+apks.length+' 个应用';
  setListPager('apks',{
    data:()=>apks,
    filter:(a,kw)=>((a.display_name||'').toLowerCase().includes(kw)||(a.package_name||'').toLowerCase().includes(kw)),
    render:renderApkRow,
    tbody:'tb-apks',pager:'pager-apks',pageSize:10,
    empty:'<tr><td colspan="6" class="empty">暂无APK，点击"上传APK"上传</td></tr>'
  });
  applyListPager('apks');
  initListSearch('apks','search-apks');
  await fillAppsDeviceList();
}
function renderApkRow(a){
  return '<tr>'+
    '<td><strong>'+esc(a.display_name||'(未命名)')+'</strong></td>'+
    '<td style="font-family:monospace;font-size:12px;color:#64748b">'+esc(a.package_name||'-')+'</td>'+
    '<td>'+(a.version_name?esc(a.version_name):'-')+'</td>'+
    '<td>'+fmtSize(a.size)+'</td>'+
    '<td style="font-size:12px;color:#94a3b8">'+esc(a.upload_time)+'</td>'+
    '<td>'+
      '<button class="btn btn-primary btn-xs" onclick="openInstallModal(\''+a.id+'\')">安装</button> '+
      '<button class="btn btn-danger btn-xs" onclick="deleteApk(\''+a.id+'\')">删除</button>'+
    '</td>'+
  '</tr>';
}

// 填充"设备已装应用"的设备下拉（保留当前选择）
async function fillAppsDeviceList(){
  const sr=await apiGet('/api/status');if(!sr||!sr.ok)return;
  const sel=document.getElementById('apps-device');
  if(!sel)return;
  const cur=sel.value;
  const devices=(sr.devices||[]).filter(d=>d.present);
  sel.innerHTML='<option value="">选择设备...</option>'+devices.map(d=>
    '<option value="'+esc(d.serial)+'">'+esc((d.serial||'').replace(/:5555$/,'')+' ('+(d.device_name||d.model||'未知设备')+')')+'</option>'
  ).join('');
  if(cur)sel.value=cur;
}

// 查看指定设备已安装应用
async function loadDeviceApps(){
  const sel=document.getElementById('apps-device');
  const serial=sel.value;
  if(!serial){showToast('请先选择设备','error');return;}
  const hint=document.getElementById('apps-hint');
  const tb=document.getElementById('tb-device-apps');
  hint.textContent='加载中...';
  const r=await apiGet('/api/devices/'+encodeURIComponent(serial)+'/apps');
  hint.textContent='';
  if(!r||!r.ok){
    tb.innerHTML='<tr><td colspan="4" class="empty">'+(r&&r.error?esc(r.error):'获取失败')+'</td></tr>';
    showToast('获取失败','error');return;
  }
  const apps=r.apps||[];
  if(!apps.length){tb.innerHTML='<tr><td colspan="4" class="empty">无应用</td></tr>';return;}
  const userApps=apps.filter(a=>/^\/data\//.test(a.path||'')).length;
  hint.textContent='共 '+apps.length+' 个应用（用户安装 '+userApps+'）';
  _devAppsData=apps;
  setListPager('devapps',{
    data:()=>_devAppsData||[],
    filter:(a,kw)=>((a.label||a.package||'').toLowerCase().includes(kw)||(a.package||'').toLowerCase().includes(kw)||(a.path||'').toLowerCase().includes(kw)),
    render:renderDevAppRow,
    tbody:'tb-device-apps',pager:'pager-devapps',pageSize:20,
    empty:'<tr><td colspan="4" class="empty">无应用</td></tr>'
  });
  applyListPager('devapps');
  initListSearch('devapps','search-devapps');
}
function renderDevAppRow(a){
  return '<tr>'+
    '<td><strong>'+esc(a.label||a.package)+'</strong>'+(a.label?' <span style="font-size:11px;color:#94a3b8;font-family:monospace">'+esc(a.package)+'</span>':'')+'</td>'+
    '<td>'+(a.version_name?esc(a.version_name):'-')+'</td>'+
    '<td style="font-size:12px;color:#94a3b8">'+(a.version_code!=null?esc(a.version_code):'-')+'</td>'+
    '<td style="font-size:11px;color:#94a3b8;word-break:break-all">'+esc(a.path||'-')+'</td>'+
  '</tr>';
}

async function uploadApk(input){
  if(!input.files||!input.files[0])return;
  const file=input.files[0];
  if(!file.name.toLowerCase().endsWith('.apk')){
    showToast('请选择 .apk 文件','error');return;
  }
  const hint=document.getElementById('apk-hint');
  const fd=new FormData();
  fd.append('file',file);
  // 用 XMLHttpRequest 才能拿到上传进度（fetch 不支持上传进度事件）
  const xhr=new XMLHttpRequest();
  xhr.open('POST','/api/apks/upload');
  if(_csrfToken)xhr.setRequestHeader('X-CSRF-Token',_csrfToken);
  xhr.upload.onprogress=function(e){
    if(e.lengthComputable){
      const pct=Math.round(e.loaded*100/e.total);
      const loaded=(e.loaded/1048576).toFixed(1);
      const total=(e.total/1048576).toFixed(1);
      hint.innerHTML='<span style="color:#f59e0b">正在上传 '+esc(file.name)+' '+pct+'% ('+loaded+'/'+total+' MB)</span>'+
        '<div class="progress" style="width:200px;height:6px;margin-top:4px"><div class="progress-bar" style="width:'+pct+'%"></div></div>';
    }
  };
  xhr.onload=function(){
    if(xhr.status===401){window.location='/login';return;}
    try{
      const data=JSON.parse(xhr.responseText);
      if(data.ok){
        showToast(data.msg||'上传成功','success');
        loadApks();
      }else{
        showToast(data.error||'上传失败','error');
        hint.textContent='';
      }
    }catch(e){
      showToast('解析响应失败','error');
      hint.textContent='';
    }
  };
  xhr.onerror=function(){
    showToast('上传失败：网络错误','error');
    hint.textContent='';
  };
  xhr.send(fd);
  input.value='';
}

async function deleteApk(id){
  if(!confirm('确认删除此APK文件？'))return;
  const r=await apiDelete('/api/apks/'+id);
  handleResult(r,loadApks);
}

async function openInstallModal(apkId){
  const apk=_apksCache.find(a=>a.id===apkId);
  const apkName=apk?(apk.display_name||'APK'):'APK';
  const sr=await apiGet('/api/status');if(!sr||!sr.ok)return;
  const devices=sr.devices||[];
  const online=devices.filter(d=>d.present);
  if(!online.length){
    showToast('没有在线设备','error');return;
  }
  const body=
    '<div style="margin-bottom:12px">'+
      '<strong>安装应用：</strong><span class="label label-primary">'+esc(apkName)+'</span>'+
      ' <span style="font-size:12px;color:#94a3b8">运行中设备将自动跳过</span>'+
    '</div>'+
    '<div style="margin-bottom:8px">'+
      '<button class="btn btn-sm" onclick="document.querySelectorAll(\'#install-dev-list input[type=checkbox]\').forEach(c=>c.checked=true)">全选</button> '+
      '<button class="btn btn-sm" onclick="document.querySelectorAll(\'#install-dev-list input[type=checkbox]\').forEach(c=>c.checked=false)">全不选</button> '+
      '<button class="btn btn-sm btn-primary" onclick="selectIdleForInstall()">全选空闲</button>'+
    '</div>'+
    '<div id="install-dev-list" class="device-list">'+
      online.map(d=>{
        const running=d.worker_status==='running'||d.worker_status==='connecting';
        const st='<span class="label label-'+(running?'success':'default')+'" style="margin-left:6px">'+(running?'运行中':'空闲')+'</span>';
        // serial 唯一，显示 IP + 型号便于区分同型号设备
        const label=(d.serial||'').replace(/:5555$/,'')+' · '+(d.device_name||d.model||'设备');
        return '<label><input type="checkbox" value="'+esc(d.serial)+'"'+(running?'':' checked')+'>'+esc(label)+st+'</label>';
      }).join('')+
    '</div>';

  document.getElementById('modal-title').textContent='安装应用到设备';
  document.getElementById('modal-body').innerHTML=body;
  document.getElementById('modal-footer').innerHTML=
    '<button class="btn" onclick="closeModal()">取消</button>'+
    '<button class="btn btn-primary" onclick="startInstall(\''+apkId+'\')">开始安装</button>';
  document.getElementById('modal-overlay').classList.add('show');
}

function selectIdleForInstall(){
  document.querySelectorAll('#install-dev-list label').forEach(lbl=>{
    const cb=lbl.querySelector('input[type=checkbox]');
    const isRunning=lbl.querySelector('.label-success');
    cb.checked=!isRunning;
  });
}

async function startInstall(apkId){
  const checked=document.querySelectorAll('#install-dev-list input[type=checkbox]:checked');
  const serials=Array.from(checked).map(c=>c.value);
  if(!serials.length){
    showToast('请至少选择一台设备','error');return;
  }
  const r=await apiPost('/api/apks/install',{apk_id:apkId,serials:serials});
  if(!r||!r.ok){showToast(r?r.error:'请求失败','error');return;}
  showToast(r.msg||'安装已启动','success');
  showInstallProgress();
}

function showInstallProgress(){
  document.getElementById('modal-title').textContent='安装进度';
  document.getElementById('modal-body').innerHTML=
    '<div id="install-progress" style="min-height:200px"><p class="text-muted">加载中...</p></div>';
  document.getElementById('modal-footer').innerHTML=
    '<button class="btn" onclick="closeInstallModal()" id="install-close-btn" style="display:none">关闭</button>';
  pollInstallStatus();
  if(_installTimer)clearInterval(_installTimer);
  _installTimer=setInterval(pollInstallStatus,3000);
}

async function pollInstallStatus(){
  const r=await apiGet('/api/apks/install/status');
  if(!r||!r.ok)return;
  const st=r.status;
  if(!st){
    document.getElementById('install-progress').innerHTML='<p class="text-muted">无安装任务</p>';
    if(_installTimer){clearInterval(_installTimer);_installTimer=null;}
    return;
  }
  const SS={pending:{t:'等待',c:'default'},installing:{t:'安装中',c:'warning'},success:{t:'成功',c:'success'},failed:{t:'失败',c:'danger'},skipped:{t:'跳过',c:'default'}};
  const items=st.items||{};
  const itemRows=Object.entries(items).map(([serial,info])=>{
    const s=SS[info.status]||{t:info.status,c:'default'};
    return '<tr><td>'+esc(info.name||serial)+'</td>'+
      '<td style="font-family:monospace;font-size:11px;color:#94a3b8">'+esc(serial)+'</td>'+
      '<td><span class="label label-'+s.c+'">'+s.t+'</span></td>'+
      '<td style="font-size:12px;color:#64748b">'+esc(info.msg||'')+'</td></tr>';
  }).join('');

  const pct=st.total>0?Math.round((st.success+st.failed+st.skipped)*100/st.total):0;
  const summary=
    '<div style="margin-bottom:12px">'+
      '<div style="display:flex;gap:8px;margin-bottom:8px;font-size:13px;flex-wrap:wrap">'+
        '<span>应用：<strong>'+esc(st.apk_name)+'</strong></span>'+
        '<span class="label label-success">成功 '+st.success+'</span>'+
        '<span class="label label-danger">失败 '+st.failed+'</span>'+
        '<span class="label label-default">跳过 '+st.skipped+'</span>'+
        '<span class="label label-warning">安装中 '+st.installing+'</span>'+
        '<span class="label label-default">等待 '+st.pending+'</span>'+
      '</div>'+
      '<div class="progress" style="width:100%;height:8px"><div class="progress-bar" style="width:'+pct+'%"></div></div>'+
    '</div>';

  document.getElementById('install-progress').innerHTML=
    summary+'<table class="table" style="margin-bottom:0"><thead><tr><th>设备</th><th>Serial</th><th>状态</th><th>详情</th></tr></thead><tbody>'+itemRows+'</tbody></table>';

  if(st.finished){
    if(_installTimer){clearInterval(_installTimer);_installTimer=null;}
    document.getElementById('install-close-btn').style.display='';
    showToast('安装完成：成功'+st.success+' 失败'+st.failed+' 跳过'+st.skipped,'success');
  }
}

function closeInstallModal(){
  if(_installTimer){clearInterval(_installTimer);_installTimer=null;}
  closeModal();
}


// ================== 模态框 ==================
function showModal(){
  document.getElementById('modal-overlay').classList.add('show');
}
function closeModal(){
  // 先关闭弹窗（最重要的一步，确保一定执行）
  const ov=document.getElementById('modal-overlay');
  if(ov)ov.classList.remove('show');
  // 再做清理工作，任何异常都不影响弹窗关闭
  try{
    stopShotTimer();
    _shotSerial='';
    const box=document.getElementById('modal-box');
    if(box)box.classList.remove('shot-modal');
  }catch(e){console.warn('closeModal cleanup error:',e);}
}

// 关闭元素抓取弹窗（不影响任务编辑窗口）
function closeElPicker(){
  var ov=document.getElementById('el-picker-overlay');
  if(ov)ov.classList.remove('show');
  // 清理状态
  try{ _stepEditor._elData=null; _stepEditor._elSerial=''; }catch(e){}
}

// ================== 行内按钮操作（停止/执行/启停等，自动 toast + 刷新）==================
async function apiAction(url,body){
  const r=await apiPost(url,body);
  if(!r)return;
  if(r.ok){showToast(r.msg||'操作成功','success');if(_activeTab==='monitor')loadMonitor();if(_activeTab==='tasks')loadTasks();}
  else{showToast(r.error||'操作失败','error');}
}

async function scanForeground(){
  const r=await apiPost('/api/scan_foreground');
  if(!r)return;
  if(r.ok){showToast('扫描已启动，请等待几秒...','success');loadMonitor();}
  else{showToast(r.error||'扫描失败','error');}
}

// ================== 初始化 ==================
initCsrf();   // 获取 CSRF token（非 GET 请求需携带）
showTab('monitor');