main.min.js

/*
Copyright © 2025-2026 Leo Zhang

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
---
MIT License

Copyright (c) 2020 Kris Zyp

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
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i(r),t()}catch(t){r(t)}finally{document.body.removeChild(o)}},o.oncancel=()=>{document.body.removeChild(o),t()},o.click()})},folderToTarStream:c,clearData:async function(t={}){if(0===Object.keys(t).length&&(t={opfs:!0,idb:!0,localStorage:!0,sessionStorage:!0,cookies:!0,cache:!0}),t.opfs&&navigator.storage)try{const t=await navigator.storage.getDirectory();for await(const r of t.keys())await t.removeEntry(r,{recursive:!0})}catch(t){LittleExport.warn("Failed to clear OPFS:",t)}if(t.localStorage)try{localStorage.clear()}catch(t){LittleExport.warn("Failed to clear localStorage:",t)}if(t.sessionStorage)try{sessionStorage.clear()}catch(t){LittleExport.warn("Failed to clear sessionStorage:",t)}if(t.cookies)try{const t=document.cookie.split(";");for(let r=0;r<t.length;r++){const n=t[r],a=n.indexOf("="),o=-1<a?n.trim().substring(0,a):n.trim();document.cookie=`${o}=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/`,document.cookie=`${o}=; expires=Thu, 01 Jan 1970 00:00:00 GMT; domain=${window.location.hostname}; path=/`;const i=window.location.hostname.split(".");if(2<i.length){const t=i.slice(-2).join(".");document.cookie=`${o}=; expires=Thu, 01 Jan 1970 00:00:00 GMT; domain=.${t}; path=/`}}}catch(t){LittleExport.warn("Failed to clear cookies:",t)}if(t.cache&&window.caches)try{const t=await caches.keys();for(const r of t)await caches.delete(r)}catch(t){LittleExport.warn("Failed to clear cache:",t)}if(t.idb&&window.indexedDB)try{const t=await window.indexedDB.databases();await Promise.all(t.map(t=>new Promise((r,n)=>{const a=indexedDB.deleteDatabase(t.name);a.onsuccess=r,a.onerror=()=>n(a.error),a.onblocked=()=>{LittleExport.warn(`Database ${t.name} deletion blocked.`),r()}})))}catch(t){LittleExport.warn("Failed to clear IndexedDB:",t)}},TYPE:u,warn:console.warn,DECISION:f}})();
const SW_URL="./sw.min.js",ALWAYS_CONFIRM_LEAVE=!1,RFS_PREFIX="rfs",SYSTEM_FILE="rfs_system.json",CHUNK_SIZE=4194304,CONCURRENCY=4,YIELD_TIME=50,IGNORED_NAMES=new Set([".DS_Store","Thumbs.db","desktop.ini","__MACOSX",".AppleDouble",".LSOverride",".Trashes",".TemporaryItems",".Spotlight-V100",".fseventsd",".DocumentRevisions-V100","System Volume Information","$RECYCLE.BIN"]);function isJunk(a){return IGNORED_NAMES.has(a)||a.startsWith("._")||a.startsWith(".Trash-")}window.addEventListener("beforeunload",function(a){if(ALWAYS_CONFIRM_LEAVE||currentlyBusy)return a.preventDefault(),a.returnValue="Changes you made may not be saved.","Changes you made may not be saved."});let folderName,dirHandle,observer,isListingFolders=!1,currentlyBusy=!1,changes=[],showingSync=!1,_registryCache=null,_opfsRoot=null;async function getOpfsRoot(){return _opfsRoot||(_opfsRoot=await navigator.storage.getDirectory()),_opfsRoot}function setUiBusy(a){currentlyBusy!==a&&(currentlyBusy=a,Array.from(document.getElementsByTagName("button")).forEach(a=>a.disabled=currentlyBusy))}function createLogger(a,b){let c=null,d=0;return function(e,f=!1){const g=Date.now();return e!==c&&null!==e&&(c=e,(f||g-d>YIELD_TIME)&&(a.textContent=e,d=g)),b(f)}}const checkYield=function(){let a=0;const b=[],c=new MessageChannel;c.port1.onmessage=()=>{const a=b.shift();a&&a()};const d=()=>new Promise(a=>{b.push(a),c.port2.postMessage(null)});return function(b=!1){return b||Date.now()-a>YIELD_TIME?(a=Date.now(),(async()=>{"scheduler"in window&&"yield"in scheduler?await scheduler.yield():await d()})()):null}}(),logProgress=createLogger(document.getElementById("progress"),checkYield);navigator.storage.persist().then(a=>console.log(a?"Storage persisted.":"Storage not persisted."));async function waitForController(){if(navigator.serviceWorker.controller)return navigator.serviceWorker.controller;await navigator.serviceWorker.register(SW_URL);const a=await navigator.serviceWorker.ready;return navigator.serviceWorker.controller||a.active}async function getRegistry(){return _registryCache?_registryCache:await navigator.locks.request("rfs_registry_lock",{mode:"shared"},async()=>{if(_registryCache)return _registryCache;try{const a=await getOpfsRoot(),b=await a.getFileHandle(SYSTEM_FILE),c=await b.getFile(),d=await c.text();_registryCache=d?JSON.parse(d):{}}catch(a){_registryCache={}}return _registryCache})}async function saveRegistry(a){_registryCache=a,await navigator.locks.request("rfs_registry_lock",{mode:"exclusive"},async()=>{const b=await getOpfsRoot(),c=await b.getFileHandle(SYSTEM_FILE,{create:!0}),d=await c.createWritable();await d.write(JSON.stringify(a)),await d.close()})}async function updateRegistryEntry(a,b){return navigator.locks.request("rfs_registry_lock",{mode:"exclusive"},async()=>{const c=await getOpfsRoot();let d={};try{const a=await c.getFileHandle(SYSTEM_FILE),b=await a.getFile();d=JSON.parse(await b.text())}catch(a){d={}}null===b?delete d[a]:d[a]={...(d[a]||{}),...b,lastModified:Date.now()},_registryCache=d;const e=await c.getFileHandle(SYSTEM_FILE,{create:!0}),f=await e.createWritable();await f.write(JSON.stringify(d)),await f.close(),navigator.serviceWorker.controller&&navigator.serviceWorker.controller.postMessage({type:"INVALIDATE_CACHE",folderName:a})})}async function analyzeAndImportFolder(a,b=null){setUiBusy(!0);try{async function c(c){try{if(b){const a=c.join("/");return b.some(b=>b.webkitRelativePath.endsWith(`/${a}`)||b.webkitRelativePath===a)}if("directory"===a.kind){let b=a;for(let a=0;a<c.length-1;a++)b=await b.getDirectoryHandle(c[a]);return await b.getFileHandle(c[c.length-1]),!0}if(a.isDirectory)return new Promise(b=>{a.getFile(c.join("/"),{create:!1},()=>b(!0),()=>b(!1))})}catch(a){return!1}}let d=!1,e=!1,f="";if((await c(["manifest.enc"]))&&(d=!0),d||((await c(["data","custom",SYSTEM_FILE]))?e=!0:(await c(["opfs","rfs",SYSTEM_FILE]))?e=!0:(await c(["custom",SYSTEM_FILE]))?(e=!0,f="data"):(await c(["rfs",SYSTEM_FILE]))?(e=!0,f="opfs"):(await c(["ls.json"]))&&(e=!0,f="data")),d){const c=prompt(`"${a.name||"Folder"}" appears to be an encrypted folder. Enter a name to mount it as:`,a.name);return c?void(b?alert("Encrypted folder import via file input not supported yet. Use drag-and-drop or the directory picker."):"directory"===a.kind?await processFolderSelection(c,a):alert("Please use Upload Folder for encrypted folders.")):void 0}if(e){if(confirm("Found RuntimeFS data archive. Import? (This may overwrite multiple folders and already existing data.)")){let c;c=b?LittleExport.folderToTarStream(b,checkYield,{pathPrefix:f}):LittleExport.folderToTarStream(a,checkYield,{pathPrefix:f}),await startImport({stream:()=>c})}return}const g=document.getElementById("folderName").value.trim()||prompt("Enter a name for the folder:",a.name||"");if(!g)return;b?await processFilesAndStore(g,b):"directory"===a.kind?await processFolderSelection(g,a):alert("Please use drag-and-drop for this folder.")}catch(a){console.error("Import error:",a),alert("An error occurred during import: "+a.message)}finally{setUiBusy(!1)}}async function uploadFolder(){try{if(window.showDirectoryPicker){setUiBusy(!0);const a=await window.showDirectoryPicker({mode:"read"});await analyzeAndImportFolder(a)}else document.getElementById("folderUploadFallbackInput").click()}catch(a){"AbortError"!==a.name&&(console.error(a),alert("Error accessing folder: "+a.message))}finally{setUiBusy(!1)}}async function uploadFolderFallback(a){const b=a.target;return b.files.length?void(await analyzeAndImportFolder({},Array.from(b.files)),b.value=""):void setUiBusy(!1)}async function processFolderSelection(a,b){if(await navigator.locks.request(`rfs_write_${a}`,async()=>{dirHandle=b,folderName=a;try{const c=await b.getFileHandle("manifest.enc"),d=await getOpfsRoot(),e=await d.getDirectoryHandle(RFS_PREFIX,{create:!0});try{await e.removeEntry(a,{recursive:!0})}catch(a){if("NotFoundError"!==a.name)throw new Error("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs.")}await decryptAndLoadFolderToOpfs(b,c,await e.getDirectoryHandle(a,{create:!0})),await updateRegistryEntry(a,{encryptionType:null})}catch(c){if(c.message&&c.message.includes("RuntimeFS cannot currently remove"))return alert(c.message),void setUiBusy(!1);await processFolderStreaming(a,b)}}),observer){try{observer.disconnect()}catch(a){}observer=null}if("FileSystemObserver"in window)try{observer=new FileSystemObserver(a=>changes.push(...a)),await observer.observe(dirHandle,{recursive:!0}),showingSync||(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(a=>a.style.display="revert"),showingSync=!0)}catch(a){console.warn("Observer failed:",a),showingSync&&(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(a=>a.style.display="none"),showingSync=!1),observer=null}changes.length=0,document.getElementById("folderName").value="",document.getElementById("openFolderName").value=a,await updateRegistryEntry(a,{encryptionType:null}),await logProgress("",!0),setUiBusy(!1),await listFolders()}async function decryptAndLoadFolderToOpfs(a,b,c){const d=prompt("Enter the password to decrypt this folder:");if(!d)throw new Error("Password required.");const e=await b.getFile(),f=await e.arrayBuffer(),g=f.slice(0,16),h=f.slice(16,28),i=f.slice(28),j=await deriveKeyFromPassword(d,g);let k;try{const a=await crypto.subtle.decrypt({name:"AES-GCM",iv:h},j,i);k=JSON.parse(new TextDecoder().decode(a))}catch(a){throw new Error("Decryption failed. Wrong password?")}const l=await a.getDirectoryHandle("content"),m=Object.entries(k),n=m.length;let o=0;const p=new Map;p.set(".",c);const q=async()=>{for(;0<m.length;){const a=m.shift();if(!a)break;const[b,d]=a,e=logProgress(`Decrypting (${o}/${n}): ${b}`);e&&(await e);const f=b.split("/"),g=f.pop();let h=c;if(0<f.length){let a=".";h=await p.get(".");for(const b of f){const c=a;if(a+="/"+b,!p.has(a)){const d=p.get(c),e=d.then(a=>a.getDirectoryHandle(b,{create:!0}));p.set(a,e)}h=await p.get(a)}}let i;try{const a=await l.getFileHandle(d.id);i=await a.getFile()}catch(a){console.warn(`Missing file: ${b}`),o++;continue}const k=await h.getFileHandle(g,{create:!0}),q=await k.createWritable();if(0<d.size){const a=i.stream().getReader(),b=Math.ceil(d.size/CHUNK_SIZE);let c=new Uint8Array(0),e=0;try{for(;e<b;){const f=checkYield();f&&(await f);const g=e===b-1,h=g?d.size%CHUNK_SIZE||CHUNK_SIZE:CHUNK_SIZE,i=h+28;for(;c.length<i;){const{done:b,value:d}=await a.read();if(b)break;const e=new Uint8Array(c.length+d.length);e.set(c),e.set(d,c.length),c=e}if(c.length<i)break;const k=c.subarray(0,i);c=c.subarray(i);const l=k.subarray(0,12),m=k.subarray(12),n=await crypto.subtle.decrypt({name:"AES-GCM",iv:l},j,m);await q.write(new Uint8Array(n)),e++}}finally{a.releaseLock()}}try{await q.close()}catch(a){if("TypeError"!==a.name)throw a}o++}};await Promise.all(Array(CONCURRENCY).fill(null).map(q)),await logProgress("",!0)}async function processFilesAndStore(a,b){await navigator.locks.request(`rfs_write_${a}`,async()=>{const c=await getOpfsRoot(),d=await c.getDirectoryHandle(RFS_PREFIX,{create:!0});try{await d.removeEntry(a,{recursive:!0})}catch(a){}const e=await d.getDirectoryHandle(a,{create:!0});let f=0;for(const a of b)f+=a.size;let g=0;const h=Array.from(b).filter(a=>!isJunk(a.name)),i=()=>{const a=(g/1e6).toFixed(2),b=(f/1e6).toFixed(2),c=0<f?(100*(g/f)).toFixed(2):"100.00";return logProgress(`Uploading: ${c}% (${a} / ${b} MB)`)},j=Array(CONCURRENCY).fill(null).map(async()=>{for(const a=new Map;0<h.length;){const b=h.shift();if(!b)break;let c=b.webkitRelativePath||b.name;const d=c.split("/");1<d.length&&d.shift(),c=d.join("/");let f=0;await writeStreamToOpfs(e,c,b,{dirCache:a,onProgress:async a=>{if(g+=a,f+=a,1048576<f){let a=i();a&&(await a),f=0}}});const j=checkYield();j&&(await j)}});await Promise.all(j),document.getElementById("folderName").value="",document.getElementById("openFolderName").value=a,await updateRegistryEntry(a,{encryptionType:null}),await logProgress("",!0),await listFolders()})}async function processFolderStreaming(a,b){const c=await getOpfsRoot(),d=await c.getDirectoryHandle(RFS_PREFIX,{create:!0});try{await d.removeEntry(a,{recursive:!0})}catch(a){if("NotFoundError"!==a.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void setUiBusy(!1)}const e=await d.getDirectoryHandle(a,{create:!0}),f=[];let g=!1,h=!1,i=0,j=0;const k=()=>{const a=(j/1e6).toFixed(2),b=(i/1e6).toFixed(2);let c=g?`Finishing: ${a} MB / ${b} MB`:`Scanning: ${a} MB / ${b} MB`;return logProgress(c)},l=async()=>{for(const a=new Map;!h;){const b=f.shift();if(!b){if(g)break;await new Promise(a=>setTimeout(a,20));continue}const c=b.fileOverride;let d=0;await writeStreamToOpfs(b.dest,b.entry.name,c,{dirCache:a,onProgress:async a=>{if(j+=a,d+=a,1048576<d){let a=k();a&&(await a),d=0}}});const e=checkYield();e&&(await e)}},m=async()=>{for(const a=[{source:b,dest:e}];0<a.length&&!h;){const{source:b,dest:c}=a.shift();try{for await(const d of b.values()){if(h)break;if(isJunk(d.name))continue;if("file"===d.kind){const a=await d.getFile();i+=a.size,f.push({dest:c,entry:d,fileOverride:a});let b=k();for(b&&(await b);500<f.length&&!h;){await new Promise(a=>setTimeout(a,20));const a=checkYield();a&&(await a)}}else if("directory"===d.kind){const b=await c.getDirectoryHandle(d.name,{create:!0});a.push({source:d,dest:b})}const b=checkYield();b&&(await b)}}catch(a){console.warn("Error reading directory stream:",a)}}g=!0};try{const a=Array(CONCURRENCY).fill(null).map(l);await Promise.all([m(),...a])}catch(a){throw h=!0,a}document.getElementById("folderName").value="",document.getElementById("openFolderName").value=a,await updateRegistryEntry(a,{encryptionType:null}),await logProgress("",!0),await listFolders(),setUiBusy(!1)}async function writeStreamToOpfs(a,b,c,d={}){const{dirCache:e=null,onProgress:f=null}=d,g=b.split("/"),h=g.pop();let i=a;if(0<g.length){let b="";for(const c of g){const d=b;if(b+=(b?"/":"")+c,e){if(!e.has(b)){const f=d?e.get(d):Promise.resolve(a),g=f.then(a=>a.getDirectoryHandle(c,{create:!0}));e.set(b,g)}i=await e.get(b)}else i=await i.getDirectoryHandle(c,{create:!0})}}const j=await i.getFileHandle(h,{create:!0}),k=await j.createWritable({keepExistingData:!1});try{if(!f)await k.write(c);else{const a=new TransformStream({async transform(a,b){b.enqueue(a);const c=f(a.byteLength);c&&(await c)}});await c.stream().pipeThrough(a).pipeTo(k,{preventClose:!0})}}finally{try{await k.close()}catch(a){}}}async function cleanupOrphans(){await navigator.locks.request("rfs_global_import",{ifAvailable:!0},async a=>{if(a)try{const a=await getOpfsRoot(),b=await a.getDirectoryHandle(RFS_PREFIX),c=await getRegistry(),d=new Set(Object.keys(c)),e=[];for await(const a of b.keys())e.push(a);for(const a of e)d.has(a)||(await navigator.locks.request(`rfs_write_${a}`,{ifAvailable:!0},async c=>{c&&(await b.removeEntry(a,{recursive:!0}).catch(()=>{}))}))}catch(a){}})}async function listFolders(){if(!isListingFolders){isListingFolders=!0;const a=document.getElementById("folderList");try{const b=await getRegistry();a.textContent="";const c=document.createDocumentFragment(),d=Object.keys(b).sort();d.forEach(a=>{const d=b[a],e=document.createElement("li");e.textContent="password"===d.encryptionType?`[Locked] ${a}`:a,c.appendChild(e)}),a.appendChild(c)}finally{isListingFolders=!1}}}async function deleteFolder(a,b=!1){const c=a||document.getElementById("deleteFolderName").value.trim();if(!c)return alert("Enter a folder name first.");if(b||confirm(`Remove "${c}"?`)){setUiBusy(!0),logProgress("Deleting...",!0);const d=await getOpfsRoot();try{const a=await d.getDirectoryHandle(RFS_PREFIX);await a.removeEntry(c,{recursive:!0})}catch(a){if("NotFoundError"!==a.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void setUiBusy(!1)}await updateRegistryEntry(c,null),folderName===c&&(folderName=void 0,dirHandle=void 0,document.getElementById("openFolderName").value="",observer&&(observer.disconnect(),observer=null),showingSync&&(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(a=>a.style.display="none"),showingSync=!1)),a||(document.getElementById("deleteFolderName").value=""),await listFolders(),logProgress("",!0),b||setUiBusy(!1)}}async function openFile(a){const b=(a||document.getElementById("openFolderName").value.trim()).trim(),c=document.getElementById("fileName").value.trim();if(!b)return alert("Provide a folder name.");setUiBusy(!0);try{const a=await getRegistry(),d=a[b];if(!d)return void alert("Folder not found.");const e=document.getElementById("regex").value.trim(),f=document.getElementById("headers").value.trim();(d.rules!==e||d.headers!==f)&&(await updateRegistryEntry(b,{rules:e,headers:f}));let g=null;if("password"===d.encryptionType){const a=prompt(`Enter password for "${b}":`);if(!a)return;g=await deriveKeyFromPassword(a,base64ToBuffer(d.salt))}const h=await waitForController();await new Promise((a,c)=>{const d=new MessageChannel;d.port1.onmessage=()=>a(),h.postMessage({type:"SET_RULES",rules:e,headers:f,key:g,folderName:b},[d.port2]),setTimeout(()=>c(new Error("Service Worker timeout.")),4e3)});const i=c.split("/").map(encodeURIComponent).join("/");window.open(`n/${encodeURIComponent(b)}/${i}`,"_blank")}catch(a){console.error(a),alert(a.message)}finally{setUiBusy(!1)}}async function exportData(){setUiBusy(!0);try{let a=prompt("Enter a password (or leave blank for no encryption):");if(null===a)return void setUiBusy(!1);a=a||void 0;const b=document.getElementById("c1").checked,c=document.getElementById("c2").checked,d=document.getElementById("c3").checked,e=document.getElementById("c4").checked,f=document.getElementById("c5").checked,g=document.getElementById("c6").checked,h=document.getElementById("c7").checked,i=[];if(e||f){const a=await getRegistry(),b={};for(const[c,d]of Object.entries(a))b[c]={...d};i.push({path:SYSTEM_FILE,data:JSON.stringify(b)})}const j={opfs:[SYSTEM_FILE]},k={opfs:[]};e&&!f?k.opfs.push(RFS_PREFIX):!e&&f&&j.opfs.push(RFS_PREFIX),logProgress("Starting export...",!0);let l=2;await LittleExport.exportData({fileName:"result",password:a,cookies:b,localStorage:c,idb:d,opfs:e||f,cache:g,session:h,customItems:i,include:0<k.opfs.length?k:{},exclude:j,graceful:!0,logger:function(a){"Export cancelled."===a?l=1:logProgress(a)},onerror:a=>{l=0,console.error("Error while exporting:",a),alert("Error while exporting: "+a)}}),1!=l&&alert(2==l?"Export complete!":"Export may have failed or been incomplete.")}catch(a){console.error("Export failed:",a),alert("Export failed: "+a.message)}finally{setUiBusy(!1),logProgress("",!0)}}async function importData(){const a=document.createElement("input");a.type="file",a.onchange=a=>{a.target.files[0]&&startImport(a.target.files[0])},a.click()}async function startImport(a){await navigator.locks.request("rfs_global_import",async()=>{setUiBusy(!0),_registryCache=null,localStorage.setItem("rfs_partial","1");try{let b;logProgress("Starting import...",!0);const c={graceful:!0,logger:logProgress,onCustomItem:async(a,c)=>{a===SYSTEM_FILE&&(b=JSON.parse(new TextDecoder().decode(c)))},onerror:a=>{"A password is required to decrypt this data."===a.message?(alert("A password is required to decrypt this data."),d=1):(console.error(a),d=0,alert("Import encountered an error: "+a.message))}};let d=2;c.source=a,await LittleExport.importData(c),logProgress("Merging metadata...",!0);const e=await getRegistry(),f={...e,...(b||{})};await saveRegistry(f),await validateAndRepairRegistry(),localStorage.removeItem("rfs_partial"),await listFolders(),1!=d&&alert(2===d?"Import complete! Reload to fix any issues.":"Import may have failed or been incomplete; reload to fix any issues.")}catch(a){console.error("Import failed:",a),alert("Import failed:",a)}finally{setUiBusy(!1),logProgress("",!0)}})}async function validateAndRepairRegistry(){const a=await getOpfsRoot(),b=await getRegistry();let c=!1;try{const d=await a.getDirectoryHandle(RFS_PREFIX,{create:!0}),e=[];for await(const a of d.keys())e.push(a);e.forEach(a=>{b[a]||(b[a]={created:Date.now(),headers:localStorage.getItem("fsHeaders")||"",rules:localStorage.getItem("fsRegex")||""},c=!0)});const f=Object.keys(b);await Promise.all(f.map(async a=>{try{await d.getDirectoryHandle(a)}catch(d){delete b[a],c=!0}})),c&&(await saveRegistry(b))}catch(a){console.warn("Repair failed:",a)}}function base64ToBuffer(a){const b=atob(a),c=b.length,d=new Uint8Array(c);for(let e=0;e<c;e++)d[e]=b.charCodeAt(e);return d.buffer}function bufferToBase64(a){let b="";const c=new Uint8Array(a),d=c.byteLength;for(let e=0;e<d;e++)b+=String.fromCharCode(c[e]);return btoa(b)}async function deriveKeyFromPassword(a,b){const c=new TextEncoder,d=await crypto.subtle.importKey("raw",c.encode(a),{name:"PBKDF2"},!1,["deriveKey"]);return await crypto.subtle.deriveKey({name:"PBKDF2",salt:b,iterations:6e5,hash:"SHA-256"},d,{name:"AES-GCM",length:256},!0,["encrypt","decrypt"])}let syncTimeout=-1;async function syncFiles(){return folderName&&dirHandle?void(setUiBusy(!0),0<changes.length?(await performSyncToOpfs(),document.getElementById("syncInfo").textContent="Sync complete."):document.getElementById("syncInfo").textContent="No changes to sync.",clearTimeout(syncTimeout),syncTimeout=setTimeout(()=>document.getElementById("syncInfo").textContent="",1e3),setUiBusy(!1)):alert("It seems that syncing isn't supported for your browser.")}async function syncAndOpenFile(){return folderName&&dirHandle?void(setUiBusy(!0),clearTimeout(syncTimeout),0<changes.length?(await performSyncToOpfs(),document.getElementById("syncInfo").textContent="Sync complete."):document.getElementById("syncInfo").textContent="No changes to sync.",syncTimeout=setTimeout(()=>document.getElementById("syncInfo").textContent="",1e3),await openFile(folderName),setUiBusy(!1)):alert("It seems that syncing isn't supported for your browser.")}async function performSyncToOpfs(){console.log(`Syncing ${changes.length}${1===changes.length?" change...":" changes..."}`),await navigator.locks.request(`rfs_write_${folderName}`,async()=>{const a=await getOpfsRoot(),b=await a.getDirectoryHandle(RFS_PREFIX),c=await b.getDirectoryHandle(folderName),d=changes.splice(0,changes.length);changes.length=0;for(const a of d){const b=a.relativePathComponents;if(!b)continue;const d=b.join("/");try{if("deleted"===a.type){let a=c;const d=b.slice(0,-1),e=b[b.length-1];for(const b of d)a=await a.getDirectoryHandle(b);await a.removeEntry(e,{recursive:!0})}else{let a=dirHandle;for(let c=0;c<b.length-1;c++)a=await a.getDirectoryHandle(b[c]);const e=await a.getFileHandle(b[b.length-1]),g=await e.getFile();await writeStreamToOpfs(c,d,g,{totalSize:g.size})}}catch(a){console.warn(`Sync failed for ${d}:`,a)}}navigator.serviceWorker.controller&&navigator.serviceWorker.controller.postMessage({type:"INVALIDATE_CACHE",folderName:folderName})})}async function uploadAndEncryptWithPassword(){const a=document.getElementById("encryptFolderName").value.trim(),b=prompt("Enter a password:");if(!a||!b)return;setUiBusy(!0);let c;try{c=await window.showDirectoryPicker({mode:"read"})}catch(a){if("AbortError"!==a.name)throw a}await navigator.locks.request(`rfs_write_${a}`,async()=>{const d=await getOpfsRoot(),e=await d.getDirectoryHandle(RFS_PREFIX,{create:!0});try{await e.removeEntry(a,{recursive:!0})}catch(a){if("NotFoundError"!==a.name)return void alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs.")}const f=await e.getDirectoryHandle(a,{create:!0}),g=await f.getDirectoryHandle("content",{create:!0}),h=crypto.getRandomValues(new Uint8Array(16)),i=await deriveKeyFromPassword(b,h),j={},k=[],l=[{dir:c,path:""}];let m=!0,n=0;const o=async()=>{for(;;){if(0===k.length){if(!m)break;const a=checkYield();a&&(await a);continue}const a=k.shift(),{entry:b,entryPath:c,fileId:d}=a,e=checkYield();if(e){const b=(n/1e6).toFixed(2);await logProgress(`Encrypting: ${b} MB (${a.entryPath})`),await e}const f=await b.getFile();n+=f.size,j[c]={id:d,size:f.size,type:f.type};const h=await g.getFileHandle(d,{create:!0}),l=await h.createWritable();if(0<f.size){const a=f.stream().getReader();let b=[],c=0;try{for(;;){const{done:d,value:e}=await a.read();if(e&&(b.push(e),c+=e.byteLength),(d||c>=CHUNK_SIZE)&&0<c){const a=new Uint8Array(c);let e=0;for(const d of b)a.set(d,e),e+=d.byteLength;let f=0;for(;f<c;){const e=c-f;if(!d&&e<CHUNK_SIZE){const d=a.slice(f);b=[d],c=d.byteLength;break}const g=checkYield();g&&(await g);const h=Math.min(CHUNK_SIZE,e),j=a.subarray(f,f+h),k=crypto.getRandomValues(new Uint8Array(12)),m=await crypto.subtle.encrypt({name:"AES-GCM",iv:k},i,j);f+=h,await l.write(k),await l.write(new Uint8Array(m))}f>=c&&(b=[],c=0)}if(d)break}}finally{a.releaseLock();try{await l.close()}catch(a){}}}else await l.close()}},p=(async()=>{for(;0<l.length;){const{dir:a,path:b}=l.shift();for await(const c of a.values()){if(isJunk(c.name))continue;const a=b?`${b}/${c.name}`:c.name;if("file"===c.kind){const b=crypto.randomUUID();for(k.push({entry:c,entryPath:a,fileId:b});500<k.length;)await new Promise(a=>setTimeout(a,20))}else l.push({dir:c,path:a})}}m=!1})(),q=Array(CONCURRENCY).fill(null).map(o);await p,await Promise.all(q),await logProgress("Saving manifest...",!0);const r=JSON.stringify(j),s=new TextEncoder().encode(r),t=crypto.getRandomValues(new Uint8Array(12)),u=await crypto.subtle.encrypt({name:"AES-GCM",iv:t},i,s),v=await f.getFileHandle("manifest.enc",{create:!0}),w=await v.createWritable();await w.write(h),await w.write(t),await w.write(new Uint8Array(u)),await w.close(),await updateRegistryEntry(a,{encryptionType:"password",salt:bufferToBase64(h)}),document.getElementById("encryptFolderName").value="",await listFolders(),setUiBusy(!1),await logProgress("",!0)})}document.addEventListener("DOMContentLoaded",()=>{if("file:"===window.location.protocol)return void alert("RuntimeFS cannot run from a local file:// context; use an online version or test from localhost instead.");if(!window.isSecureContext)return void alert("RuntimeFS cannot run in a non-secure context.");if(!("serviceWorker"in navigator))return void alert("RuntimeFS cannot run without ServiceWorkers enabled.");document.getElementById("folderName").addEventListener("keydown",a=>{"Enter"!==a.key||currentlyBusy||uploadFolder()}),document.getElementById("openFolderName").addEventListener("keydown",a=>{"Enter"!==a.key||currentlyBusy||(a.shiftKey?openFileInPlace():a.ctrlKey||a.metaKey?syncAndOpenFile():openFile())}),document.getElementById("fileName").addEventListener("keydown",a=>{"Enter"!==a.key||currentlyBusy||(a.shiftKey?openFileInPlace():a.ctrlKey||a.metaKey?syncAndOpenFile():openFile())}),document.getElementById("deleteFolderName").addEventListener("keydown",a=>{"Enter"!==a.key||currentlyBusy||deleteFolder()}),document.getElementById("folderUploadFallbackInput").addEventListener("change",uploadFolderFallback),window.showSaveFilePicker&&(document.getElementById("encryptionSection").style.display="revert");const a=document.body;a.addEventListener("dragover",b=>{b.preventDefault(),a.style.backgroundColor="#385b7e"}),a.addEventListener("dragleave",()=>{a.style.backgroundColor=""}),a.addEventListener("drop",async b=>{if(b.preventDefault(),a.style.backgroundColor="",currentlyBusy)return;const c=Array.from(b.dataTransfer.items);if(!c.length)return;const d=c[0].webkitGetAsEntry?c[0].webkitGetAsEntry():null,e=[];for(let a=0;a<c.length;a++)if("file"===c[a].kind){const b=c[a].getAsFile();b&&e.push(b)}let f=null;if("file"===c[0].kind&&window.FileSystemDirectoryHandle)try{f=c[0].getAsFileSystemHandle()}catch(a){console.warn("FileSystemHandle access denied.")}let g=null;if(f)try{g=await f}catch(a){}if(await new Promise(a=>setTimeout(a,10)),g&&"directory"===g.kind)return void(await analyzeAndImportFolder(g));if(d&&d.isDirectory){const a=prompt("Please choose a folder name:",d.name);if(a){setUiBusy(!0);const b=[],c=[{entry:d,path:""}];let e=0,g=!1,h=!1,i="";for(;0<c.length;){const{entry:a,path:j}=c.shift();if(isJunk(a.name))continue;if(a.isFile){const c=await new Promise((b,c)=>a.file(b,c));Object.defineProperty(c,"webkitRelativePath",{value:j+c.name}),b.push(c);const f=c.webkitRelativePath;if(f.endsWith(`data/custom/${SYSTEM_FILE}`))g=!0;else if(f.endsWith(`custom/${SYSTEM_FILE}`))g=!0,i="data";else if("ls.json"===f||f.endsWith("/ls.json")){const a=f.split("/");(1===a.length||2===a.length&&a[0]===d.name)&&(g=!0,i="data")}f.endsWith("manifest.enc")&&(h=!0),e++}else if(a.isDirectory){const b=a.createReader();let d;do{d=await new Promise((a,c)=>b.readEntries(a,c));for(const b of d)c.push({entry:b,path:j+a.name+"/"})}while(0<d.length)}let k=logProgress(`Scanned ${e} files...`);k&&(await k)}if(h)return alert("Encrypted folder import via drag-and-drop legacy mode is not supported in your browser."),void setUiBusy(!1);if(g){if(confirm("Found RuntimeFS data archive. Import? (This may overwrite multiple folders and already existing data.)")){const a=LittleExport.folderToTarStream(b,checkYield,{pathPrefix:i});return await startImport({stream:()=>a}),void setUiBusy(!1)}setUiBusy(!1)}await logProgress(`Processed ${b.length} files...`,!0),await processFilesAndStore(a,b),setUiBusy(!1)}return}const h=e;if(0!==h.length)if(1<h.length){const a=prompt(`You dropped ${h.length} files. Enter a name to create a new folder for them:`);a&&(setUiBusy(!0),await processFilesAndStore(a,h),setUiBusy(!1))}else{const a=h[0],b=/\.(tar\.gz|tar|enc|cbor)$/i.test(a.name)||a.name===SYSTEM_FILE;if(b){if(confirm("Found RuntimeFS data archive. Import? (This may overwrite multiple folders and already existing data.)\nClick OK to extract and import it as system data or cancel to upload as file."))return void startImport(a)}const c=a.name.replace(/\.[^/.]+$/,""),d=prompt(`Enter a folder name to upload "${a.name}" into:`,c);d&&(setUiBusy(!0),await processFilesAndStore(d,[a]),setUiBusy(!1))}}),navigator.serviceWorker.register(SW_URL).then(a=>{a.addEventListener("updatefound",()=>{const b=a.installing;b.addEventListener("statechange",()=>{"installed"===b.state&&navigator.serviceWorker.controller&&location.reload()})})}).catch(console.error),navigator.serviceWorker.addEventListener("message",async a=>{a.data&&"SW_READY"===a.data.type&&(await listFolders()),a.data&&"INVALIDATE_CACHE"===a.data.type&&(await listFolders())}),localStorage.getItem("rfs_partial")?validateAndRepairRegistry().then(async()=>{const a=await getOpfsRoot();for await(const b of a.keys())b.startsWith("._littleexport_temp_")&&(await a.removeEntry(b,{recursive:!0}).catch(()=>{}));return localStorage.removeItem("rfs_partial"),cleanupOrphans()}).then(listFolders):cleanupOrphans().then(listFolders);const b=document.getElementById("regex"),c=document.getElementById("headers");b.value=localStorage.getItem("fsRegex")||"",c.value=localStorage.getItem("fsHeaders")||"",b.addEventListener("input",()=>localStorage.setItem("fsRegex",b.value)),c.addEventListener("input",()=>localStorage.setItem("fsHeaders",c.value))});async function openFileInPlace(){if(!navigator.serviceWorker.controller)return void alert("Service Worker is not controlling the page. Please reload and try again.");const a=document.getElementById("openFolderName").value.trim(),b=document.getElementById("fileName").value.trim();if(!a)return alert("Provide a folder name.");setUiBusy(!0);try{const c=await getRegistry(),d=c[a];if(!d)return void alert("Folder not found.");const e=document.getElementById("regex").value.trim(),f=document.getElementById("headers").value.trim();(d.rules!==e||d.headers!==f)&&(await updateRegistryEntry(a,{rules:e,headers:f}));let g=null;if("password"===d.encryptionType){const b=prompt(`Enter password for "${a}":`);if(!b)return;g=await deriveKeyFromPassword(b,base64ToBuffer(d.salt))}const h=await waitForController();await Promise.race([new Promise(b=>{const c=new MessageChannel;c.port1.onmessage=()=>b(),h.postMessage({type:"SET_RULES",rules:e,headers:f,key:g,folderName:a},[c.port2])}),new Promise((a,b)=>setTimeout(()=>b(new Error("Service Worker response timed out.")),4e3))]);const i=b?b.split("/").map(encodeURIComponent).join("/"):"index.html",j=`n/${encodeURIComponent(a)}/${i}`,k=await fetch(j,{headers:{Accept:"text/html"}});if(!k.ok){if(403===k.status)return alert("Session authentication failed.");throw new Error(`Failed to load HTML: ${k.status} ${k.statusText}`)}let l=await k.text();const m=j.substring(0,j.lastIndexOf("/")+1),n=`<base href="${m}">`;let o="";k.headers.forEach((a,b)=>{o+=`<meta http-equiv="${b.replace(/"/g,"&quot;")}" content="${a.replace(/"/g,"&quot;")}">\n`}),l=/<head\b[^>]*>/i.test(l)?l.replace(/(<head\b[^>]*>)/i,`$1${n}${o}`):/<html\b[^>]*>/i.test(l)?l.replace(/(<html\b[^>]*>)/i,`$1<head>${n}${o}</head>`):`<head>${n}${o}</head>${l}`,document.open(),document.write(l),document.close()}catch(a){console.error(a),alert(a.message)}finally{setUiBusy(!1)}}