async function api(url,opt={}){const r=await fetch(url,opt);if(!r.ok){let t="请求失败";try{t=(await r.json()).error||t}catch{};const e=Error(t);e.status=r.status;throw e}return r.status===204?null:r.json()}
async function api(url,opt={}){const r=await fetch(url,{cache:"no-store",...opt});if(!r.ok){let t="请求失败";try{t=(await r.json()).error||t}catch{};const e=Error(t);e.status=r.status;throw e}return r.status===204?null:r.json()}
function esc(s){return String(s).replace(/[&<>"']/g,c=>({"&":"&","<":"<",">":">","\"":""","'":"'"}[c]))}
function fmt(n){if(n<1024)returnn+"B";if(n<1048576)return(n/1024).toFixed(1)+"KB";if(n<1073741824)return(n/1048576).toFixed(1)+"MB";return(n/1073741824).toFixed(1)+"GB"}
async function init(){try{me=await api("/chfs/me")}catch{me={username:"",home:"",admin:false}};updateUser();current=me.home||"";navigationRoot=me.home||"";const h=new URLSearchParams(location.hash.slice(1));const shared=h.get("folder");if(shared!==null)current=shared;await refresh()}
@@ -66,13 +66,14 @@ function sortBy(key){if(sortKey===key)sortDir*=-1;else{sortKey=key;sortDir=1}if(
function renderSortState(){["name","size","modified"].forEach(k=>{const el=$("sort-"+k);if(el)el.textContent=sortKey===k?(sortDir===1?"↑":"↓"):""})}
function emptyState(title,text,action=""){const writable=currentMask.includes("W");let buttons="";if(action==="folder"&&writable)buttons='<divclass="row"><buttononclick="newFolder()">新建文件夹</button><buttonclass="ghost"onclick="newText()">新建文本</button></div>';if(action==="upload"&&writable)buttons='<divclass="row"><buttononclick="$(\"upload\").click()">上传文件</button><buttonclass="ghost"onclick="newFolder()">新建文件夹</button></div>';return '<divclass="empty-state"><divclass="empty-icon">'+svgIcon("folder")+'</div><h3>'+esc(title)+'</h3><p>'+esc(text)+'</p>'+buttons+'</div>'}
function render(items){lastItems=sortItems(items);selected=new Set([...selected].filter(p=>lastItems.some(f=>(current?current+"/":"")+f.name===p)));renderList(lastItems);renderGrid(lastItems);updateSelection();renderSortState()}
function fileDragStart(e,p){const paths=selected.has(p)?[...selected]:[p];e.dataTransfer.effectAllowed="move";e.dataTransfer.setData("text/chfs-paths",JSON.stringify(paths));e.currentTarget.classList.add("dragging")}
function fileDragEnd(e){e.currentTarget.classList.remove("dragging");document.querySelectorAll('.drop-target').forEach(el=>el.classList.remove('drop-target'))}
function folderDragOver(e,target){if(!e.dataTransfer?.types.includes('text/chfs-paths'))return;const f=lastItems.find(x=>(current?current+'/':'')+x.name===target);if(!f?.dir||!(f.mask||'').includes('W'))return;e.preventDefault();if(target===current||target===""||[...selected].some(p=>p===target||target.startsWith(p+'/')))return;e.dataTransfer.dropEffect="move";e.currentTarget.classList.add('drop-target')}
function folderDragLeave(e){e.currentTarget.classList.remove('drop-target')}
function handleItemClick(e,p){if(window.matchMedia&&window.matchMedia('(max-width:700px)').matches){activateItem(p);return}selectItem(p,true,e)}
function activateItem(p){const f=lastItems.find(x=>(current?current+"/":"")+x.name===p);if(!f)return;if(f.dir&&(f.mask||"").includes("R"))openDir(p);else if((f.mask||"").includes("R"))previewFile(p)}
function toggleTile(p){selectItem(p,!selected.has(p))}
function openSelected(){if(selected.size!==1)return;const p=[...selected][0];if(searchMode){const f=searchItems.find(x=>x.path===p);if(f)openSearchResult(f);return}const f=lastItems.find(x=>(current?current+"/":"")+x.name===p);if(!f)return;if(f.dir&&(f.mask||"").includes("R"))openDir(p);else if((f.mask||"").includes("R"))previewFile(p)}
@@ -99,7 +100,7 @@ async function bulkTransfer(copyOnly){if(!selected.size)return;const dstDir=awai
async function loadSideRoots(){try{const d=await api("/chfs/roots"),roots=d.roots||[];$("sideRoots").innerHTML=roots.map(r=>{const writable=String(r.mask||"").includes("W");return '<buttonclass="side-item '+(r.path===current?'active':'')+'"data-root-path="'+esc(r.path)+'"onclick="jumpRoot('+JSON.stringify(r.path)+')"ondragover="sideDragOver(event,'+JSON.stringify(r.path)+','+writable+')"ondragleave="sideDragLeave(event)"ondrop="sideDrop(event,'+JSON.stringify(r.path)+','+writable+')">'+svgIcon('folder')+' '+esc(r.name)+'</button>'}).join('')||'<divclass="meta"style="padding:8px">没有可进入的位置</div>'}catch{}}
async function loadSideRoots(){try{const d=await api("/chfs/roots"),roots=d.roots||[];$("sideRoots").innerHTML=roots.map(r=>{const writable=String(r.mask||"").includes("W");return '<buttonclass="side-item '+(r.path===current?'active':'')+'"data-root-path="'+esc(r.path)+'"onclick="jumpRoot('+JSON.stringify(r.path)+')"ondragover="sideDragOver(event,'+JSON.stringify(r.path)+','+writable+')"ondragleave="sideDragLeave(event)"ondrop="sideDrop(event,'+JSON.stringify(r.path)+','+writable+')">'+svgIcon('folder')+' '+esc(r.name)+'</button>'}).join('')||'<divclass="meta"style="padding:8px">当前账号没有其他位置</div>'}catch(e){$("sideRoots").innerHTML='<divclass="meta"style="padding:8px">位置加载失败</div>'}}
async function showRoots(){try{const d=await api("/chfs/roots");const roots=d.roots||[];let html='<h2>选择位置</h2><div>';for(const r of roots)html+='<buttonclass="ghost"style="display:block;width:100%;text-align:left;margin:8px 0"onclick="jumpRoot('+JSON.stringify(r.path)+')"><b>'+esc(r.name)+'</b><spanclass="meta"> · '+esc(r.path||"/")+' · '+esc(r.mask)+'</span></button>';if(!roots.length)html+='<divclass="empty">没有可进入的共享位置</div>';html+='</div><divclass="row"><buttonclass="ghost"onclick="closeModal()">关闭</button></div>';show(html)}catch(e){fail(e.message)}}
function sideDragOver(e,target,writable){if(!e.dataTransfer?.types.includes('text/chfs-paths')||!writable)return;e.preventDefault();e.dataTransfer.dropEffect='move';e.currentTarget.classList.add('drop-target')}
function sideDragLeave(e){e.currentTarget.classList.remove('drop-target')}
@@ -116,7 +117,7 @@ async function renameItem(p){const name=p.split("/").pop(),n=await ask("重命
async function removeItem(p){if(!await confirmBox("确认删除","确定删除 "+p+"？"))return;await runOperation("正在删除",async()=>{try{await api("/chfs/rmfiles",{method:"POST",headers:{"Content-Type":"application/x-www-form-urlencoded"},body:new URLSearchParams({filepath:p})});selected.delete(p);await refresh();toast("已删除")}catch(e){fail("删除失败："+e.message)}})}
async function newFolder(){const n=await ask("新建文件夹","文件夹名称");if(!n)return;const p=current?current+"/"+n:n;toast("正在创建文件夹…");try{await api("/chfs/newdir",{method:"POST",headers:{"Content-Type":"application/x-www-form-urlencoded"},body:new URLSearchParams({filepath:p})});await refresh();toast("文件夹已创建")}catch(e){fail(e.message)}}
async function newText(){const n=await ask("新建文本","文件名","new.txt");if(!n)return;const text=await ask("新建文本","文本内容");if(text===null)return;toast("正在创建文本…");try{await api("/chfs/newtext",{method:"POST",headers:{"Content-Type":"application/x-www-form-urlencoded"},body:new URLSearchParams({filepath:current,title:n,text:text||""})});await refresh();toast("文本已创建")}catch(e){fail(e.message)}}
async function uploadFiles(files){const list=[...files].map(file=>({file,relativePath:file.webkitRelativePath||file.name}));if(!list.length)return;await uploadEntries(list)}
async function runUploadQueue(tasks,limit){let cursor=0;async function worker(){while(cursor<tasks.length){consttask=tasks[cursor++];if(task.state!=="queued")continue;task.state="uploading";setUploadTaskState(task,"uploading");constok=awaituploadOne(task.file,task.row,task.relativePath,task);if(ok){task.state="done";setUploadTaskState(task,"done")}elseif(task.state!=="cancelled"){task.state="failed";setUploadTaskState(task,"failed")};updateUploadSummary(tasks)}}awaitPromise.all(Array.from({length:Math.min(limit,tasks.length)},()=>worker()));updateUploadSummary(tasks)}
@@ -166,7 +167,7 @@ function changePassword(){show('<h2>修改密码</h2><div class="field"><input i
async function savePassword(){try{await api("/chfs/password",{method:"POST",headers:{"Content-Type":"application/json"},body:JSON.stringify({currentPassword:$("cp").value,password:$("npw").value})});toast("密码已更新");closeModal()}catch(e){fail(e.message)}}
function openLogin(){show('<h2>登录</h2><divclass="field"><label>用户名</label><inputid="u"autocomplete="username"></div><divclass="field"><label>密码</label><inputid="p"type="password"autocomplete="current-password"></div><divclass="row"><buttonclass="ghost"onclick="closeModal()">取消</button><buttononclick="login()">登录</button></div>')}
async function login(){try{await fetch("/chfs/session",{method:"POST",headers:{"Content-Type":"application/x-www-form-urlencoded"},body:new URLSearchParams({user:$("u").value,pwd:$("p").value})}).then(async r=>{if(!r.ok)throw Error((await r.json()).error||"登录失败")});closeModal();await init()}catch(e){fail(e.message)}}
async function logout(){await fetch("/chfs/session",{method:"DELETE"});location.reload()}
async function logout(){try{await api("/chfs/session",{method:"DELETE"})}finally{me={username:"",home:"",admin:false,managed:false};current="";navigationRoot="";selected.clear();updateUser();await refresh()}}
function toast(message,error=false){const host=$("toastHost"),el=document.createElement("div");el.className='toast'+(error?' error':'');el.textContent=message;host.appendChild(el);setTimeout(()=>el.remove(),2800)}
function fail(message){toast(message,true)}
function keyboardNavigation(e){const tag=(e.target?.tagName||"").toLowerCase();if(tag==="input"||tag==="textarea"||tag==="select"||tag==="button"||tag==="a"||e.target?.isContentEditable)return;if(e.key==="Escape"){if($("modal").classList.contains("show"))closeModal();else closeContext();return}if((e.ctrlKey||e.metaKey)&&e.key.toLowerCase()==="a"){e.preventDefault();toggleAll(true);return}if(e.key==="Enter"){e.preventDefault();openSelected();return}if(e.key==="Delete"&&selected.size){e.preventDefault();bulkDelete();return}if(e.key==="Backspace"&¤t&&!searchMode){e.preventDefault();goUp();return}if((e.key==="ArrowDown"||e.key==="ArrowUp")){const source=searchMode?searchItems:lastItems;if(!source.length)return;e.preventDefault();const paths=searchMode?source.map(searchPath):selectablePaths(),anchor=selectionAnchor&&paths.includes(selectionAnchor)?selectionAnchor:[...selected][0],idx=Math.max(0,paths.indexOf(anchor)),next=Math.max(0,Math.min(paths.length-1,idx+(e.key==="ArrowDown"?1:-1)));if(searchMode)selectSearchItem(paths[next],true,e);else selectItem(paths[next],true,e);return}if(e.key==="Home"||e.key==="End"){const source=searchMode?searchItems:lastItems;if(!source.length)return;e.preventDefault();const paths=searchMode?source.map(searchPath):selectablePaths(),p=e.key==="Home"?paths[0]:paths.at(-1);if(searchMode)selectSearchItem(p,true,e);else selectItem(p,true,e)}}
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