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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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"]),BODY_HEADERS=new Set(["content-type","content-length","content-range","accept-ranges","cache-control"]);function isJunk(e){return IGNORED_NAMES.has(e)||e.startsWith("._")||e.startsWith(".Trash-")}window.addEventListener("beforeunload",function(e){if(currentlyBusy)return e.preventDefault(),e.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,_registryIsTrusted=!1,_opfsRoot=null;async function getOpfsRoot(){return _opfsRoot||(_opfsRoot=await navigator.storage.getDirectory()),_opfsRoot}function setUiBusy(e){currentlyBusy!==e&&(currentlyBusy=e,Array.from(document.getElementsByTagName("button")).forEach(e=>e.disabled=currentlyBusy))}function createLogger(e,t){let r=null,a=0;return function(n,o=!1){const s=Date.now();return n!==r&&null!==n&&(r=n,(o||s-a>50)&&(e.textContent=n,a=s)),t(o)}}const checkYield=function(){let e=0;const t=[],r=new MessageChannel;return r.port1.onmessage=()=>{const e=t.shift();e&&e()},function(a=!1){return a||Date.now()-e>50?(e=Date.now(),(async()=>{"scheduler"in window&&"yield"in scheduler?await scheduler.yield():await new Promise(e=>{t.push(e),r.port2.postMessage(null)})})()):null}}(),logProgress=createLogger(document.getElementById("progress"),checkYield);async function waitForController(){if(navigator.serviceWorker.controller)return navigator.serviceWorker.controller;await navigator.serviceWorker.register(SW_URL);const e=await navigator.serviceWorker.ready;return navigator.serviceWorker.controller||e.active}async function getRegistry(){return _registryCache||await navigator.locks.request("rfs_registry_lock",{mode:"shared"},async()=>{if(_registryCache)return _registryCache;try{const e=await getOpfsRoot(),t=await e.getFileHandle(SYSTEM_FILE),r=await t.getFile(),a=await r.text();_registryCache=a?JSON.parse(a):{},_registryIsTrusted=!0}catch(e){_registryCache={},_registryIsTrusted=!1}return _registryCache})}function notifyRegistryChange(e){navigator.serviceWorker.controller&&navigator.serviceWorker.controller.postMessage({type:"INVALIDATE_CACHE",folderName:e})}async function mutateRegistry(e,t){return navigator.locks.request("rfs_registry_lock",{mode:"exclusive"},async()=>{const r=await getOpfsRoot();let a={};try{const e=await r.getFileHandle(SYSTEM_FILE),t=await e.getFile(),n=await t.text();a=n?JSON.parse(n):{}}catch(e){a={}}if(!1===await e(a))return a;const n=await r.getFileHandle(SYSTEM_FILE,{create:!0}),o=await n.createWritable();return await o.write(JSON.stringify(a)),await o.close(),_registryCache=a,_registryIsTrusted=!0,notifyRegistryChange(t),a})}async function saveRegistry(e){await mutateRegistry(t=>{for(const e of Object.keys(t))delete t[e];Object.assign(t,e)})}async function updateRegistryEntry(e,t){await mutateRegistry(r=>{null===t?delete r[e]:r[e]={...r[e]||{},...t,lastModified:Date.now()}},e)}async function analyzeAndImportFolder(e,t=null){setUiBusy(!0);try{let a=!1,n=!1,o="";async function r(r){try{if(t){const e=r.join("/");return t.some(t=>t.webkitRelativePath.endsWith(`/${e}`)||t.webkitRelativePath===e)}if("directory"===e.kind){let t=e;for(let e=0;e<r.length-1;e++)t=await t.getDirectoryHandle(r[e]);return await t.getFileHandle(r[r.length-1]),!0}if(e.isDirectory)return new Promise(t=>{e.getFile(r.join("/"),{create:!1},()=>t(!0),()=>t(!1))})}catch(e){return!1}}if(await r(["manifest.enc"])&&(a=!0),a||(await r(["data","custom",SYSTEM_FILE])||await r(["opfs","rfs",SYSTEM_FILE])?n=!0:await r(["custom",SYSTEM_FILE])?(n=!0,o="data"):await r(["rfs",SYSTEM_FILE])?(n=!0,o="opfs"):await r(["ls.json"])&&(n=!0,o="data")),a){const i=prompt(`"${e.name||"Folder"}" appears to be an encrypted folder. Enter a name to mount it as:`,e.name);if(!i)return;return void(t?alert("Encrypted folder import via file input not supported yet. Use drag-and-drop or the directory picker."):"directory"===e.kind?await processFolderSelection(i,e):alert("Please use Upload Folder for encrypted folders."))}if(n){if(confirm("Found RuntimeFS data archive. Import? (This may overwrite multiple folders and already existing data.)")){let l;l=t?LittleExport.folderToTarStream(t,checkYield,{pathPrefix:o}):LittleExport.folderToTarStream(e,checkYield,{pathPrefix:o}),await startImport({stream:()=>l})}return}const s=document.getElementById("folderName").value.trim()||prompt("Enter a name for the folder:",e.name||"");if(!s)return;t?await processFilesAndStore(s,t):"directory"===e.kind?await processFolderSelection(s,e):alert("Please use drag-and-drop for this folder.")}catch(c){console.error("Import error:",c),alert("An error occurred during import: "+c.message)}finally{setUiBusy(!1)}}async function uploadFolder(){try{if(window.showDirectoryPicker){setUiBusy(!0);const e=await window.showDirectoryPicker({mode:"read"});await analyzeAndImportFolder(e)}else document.getElementById("folderUploadFallbackInput").click()}catch(e){"AbortError"!==e.name&&(console.error(e),alert("Error accessing folder: "+e.message))}finally{setUiBusy(!1)}}async function uploadFolderFallback(e){const t=e.target;t.files.length?(await analyzeAndImportFolder({},Array.from(t.files)),t.value=""):setUiBusy(!1)}async function processFolderSelection(e,t){let r=!1;if(await navigator.locks.request(`rfs_write_${e}`,async()=>{dirHandle=t,folderName=e;let a=null;try{a=await t.getFileHandle("manifest.enc")}catch(e){}if(!a)return void await processFolderStreaming(e,t);const n=await getOpfsRoot(),o=await n.getDirectoryHandle("rfs",{create:!0});try{await o.removeEntry(e,{recursive:!0})}catch(e){if("NotFoundError"!==e.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void(r=!0)}try{await decryptAndLoadFolderToOpfs(t,a,await o.getDirectoryHandle(e,{create:!0}))}catch(t){return alert(t.message),await o.removeEntry(e,{recursive:!0}).catch(()=>{}),void(r=!0)}await updateRegistryEntry(e,{encryptionType:null})}),r)return await logProgress("",!0),void setUiBusy(!1);if(observer){try{observer.disconnect()}catch(e){}observer=null}if("FileSystemObserver"in window)try{observer=new FileSystemObserver(e=>changes.push(...e)),await observer.observe(dirHandle,{recursive:!0}),showingSync||(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(e=>e.style.display="revert"),showingSync=!0)}catch(e){console.warn("Observer failed:",e),showingSync&&(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(e=>e.style.display="none"),showingSync=!1),observer=null}changes.length=0,document.getElementById("folderName").value="",document.getElementById("openFolderName").value=e,await updateRegistryEntry(e,{encryptionType:null}),await logProgress("",!0),setUiBusy(!1),await listFolders()}async function decryptAndLoadFolderToOpfs(e,t,r){const a=prompt("Enter the password to decrypt this folder:");if(!a)throw new Error("Password required.");const n=await t.getFile(),o=await n.arrayBuffer(),s=o.slice(0,16),i=o.slice(16,28),l=o.slice(28),c=await deriveKeyFromPassword(a,s);let d;try{const e=await crypto.subtle.decrypt({name:"AES-GCM",iv:i},c,l);d=JSON.parse((new TextDecoder).decode(e))}catch(e){throw new Error("Decryption failed. Wrong password?")}const y=await e.getDirectoryHandle("content"),u=Object.entries(d),f=u.length;let m=0;const g=new Map;g.set(".",Promise.resolve(r)),await Promise.all(Array(4).fill(null).map(async()=>{for(;u.length>0;){const e=u.shift();if(!e)break;const[t,a]=e,n=logProgress(`Decrypting (${m}/${f}): ${t}`);n&&await n;const o=t.split("/"),s=o.pop();let i,l=r;if(o.length>0){let e=".";l=await g.get(".");for(const t of o){const r=e;if(e+="/"+t,!g.has(e)){const a=g.get(r).then(e=>e.getDirectoryHandle(t,{create:!0}));g.set(e,a)}l=await g.get(e)}}try{const e=await y.getFileHandle(a.id);i=await e.getFile()}catch(e){throw new Error(`The encrypted folder has no data for ${t}.`)}const d=await l.getFileHandle(s,{create:!0}),p=await d.createWritable();try{if(a.size>0){const e=i.stream().getReader(),r=Math.ceil(a.size/4194304);let n=[],o=0,s=0;try{for(;s<r;){const i=checkYield();i&&await i;const l=(s===r-1&&a.size%4194304||4194304)+28;for(;o<l;){const{done:t,value:r}=await e.read();if(t)break;n.push(r),o+=r.byteLength}if(o<l)throw new Error(`The data for ${t} is incomplete or damaged.`);const d=new Uint8Array(l);let y=0;for(;y<l;){const e=n[0],t=Math.min(e.byteLength,l-y);d.set(e.subarray(0,t),y),y+=t,o-=t,t===e.byteLength?n.shift():n[0]=e.subarray(t)}const u=d.subarray(0,12),f=d.subarray(12),m=await crypto.subtle.decrypt({name:"AES-GCM",iv:u},c,f);await p.write(new Uint8Array(m)),s++}}finally{e.releaseLock()}}await p.close()}catch(e){try{await p.abort(e)}catch(e){}throw e}m++}})),await logProgress("",!0)}async function processFilesAndStore(e,t){await navigator.locks.request(`rfs_write_${e}`,async()=>{const r=await getOpfsRoot(),a=await r.getDirectoryHandle("rfs",{create:!0});try{await a.removeEntry(e,{recursive:!0})}catch(e){if("NotFoundError"!==e.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void setUiBusy(!1)}const n=await a.getDirectoryHandle(e,{create:!0});let o=0;const s=Array.from(t).filter(e=>!isJunk(e.name));let i=0;for(const e of s)i+=e.size;const l=()=>{const e=(o/1e6).toFixed(2),t=(i/1e6).toFixed(2),r=i>0?(o/i*100).toFixed(2):"100.00";return logProgress(`Uploading: ${r}% (${e} / ${t} MB)`)},c=Array(4).fill(null).map(async()=>{const e=new Map;for(;s.length>0;){const t=s.shift();if(!t)break;let r=t.webkitRelativePath||t.name;const a=r.split("/");a.length>1&&a.shift(),r=a.join("/");let i=0;await writeStreamToOpfs(n,r,t,{dirCache:e,onProgress:async e=>{if(o+=e,i+=e,i>1048576){let e=l();e&&await e,i=0}}});const c=checkYield();c&&await c}});await Promise.all(c),document.getElementById("folderName").value="",document.getElementById("openFolderName").value=e,await updateRegistryEntry(e,{encryptionType:null}),await logProgress("",!0),await listFolders()})}async function processFolderStreaming(e,t){const r=await getOpfsRoot(),a=await r.getDirectoryHandle("rfs",{create:!0});try{await a.removeEntry(e,{recursive:!0})}catch(e){if("NotFoundError"!==e.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void setUiBusy(!1)}const n=await a.getDirectoryHandle(e,{create:!0}),o=[];let s=!1,i=!1,l=0,c=0;const d=()=>{const e=(c/1e6).toFixed(2),t=(l/1e6).toFixed(2);return logProgress(s?`Finishing: ${e} MB / ${t} MB`:`Scanning: ${e} MB / ${t} MB`)},y=async()=>{const e=new Map;for(;!i;){const t=o.shift();if(!t){if(s)break;await new Promise(e=>setTimeout(e,20));continue}const r=t.fileOverride;let a=0;await writeStreamToOpfs(t.dest,t.entry.name,r,{dirCache:e,onProgress:async e=>{if(c+=e,a+=e,a>1048576){let e=d();e&&await e,a=0}}});const n=checkYield();n&&await n}},u=async()=>{const e=[{source:t,dest:n}];for(;e.length>0&&!i;){const{source:t,dest:r}=e.shift();try{for await(const a of t.values()){if(i)break;if(isJunk(a.name))continue;if("file"===a.kind){const e=await a.getFile();l+=e.size,o.push({dest:r,entry:a,fileOverride:e});let t=d();for(t&&await t;o.length>500&&!i;){await new Promise(e=>setTimeout(e,20));const e=checkYield();e&&await e}}else if("directory"===a.kind){const t=await r.getDirectoryHandle(a.name,{create:!0});e.push({source:a,dest:t})}const t=checkYield();t&&await t}}catch(e){console.warn("Error reading directory stream:",e)}}s=!0};try{const e=Array(4).fill(null).map(y);await Promise.all([u(),...e])}catch(e){throw i=!0,e}document.getElementById("folderName").value="",document.getElementById("openFolderName").value=e,await updateRegistryEntry(e,{encryptionType:null}),await logProgress("",!0),await listFolders(),setUiBusy(!1)}async function writeStreamToOpfs(e,t,r,a={}){const{dirCache:n=null,onProgress:o=null}=a,s=t.split("/"),i=s.pop();let l=e;if(s.length>0){let t="";for(const r of s){const a=t;if(t+=(t?"/":"")+r,n){if(!n.has(t)){const o=(a?n.get(a):Promise.resolve(e)).then(e=>e.getDirectoryHandle(r,{create:!0}));n.set(t,o)}l=await n.get(t)}else l=await l.getDirectoryHandle(r,{create:!0})}}const c=await l.getFileHandle(i,{create:!0}),d=await c.createWritable({keepExistingData:!1});try{if(o){const e=new TransformStream({async transform(e,t){t.enqueue(e);const r=o(e.byteLength);r&&await r}});await r.stream().pipeThrough(e).pipeTo(d,{preventClose:!0})}else await d.write(r);await d.close()}catch(e){try{await d.abort(e)}catch(e){}throw e}}async function cleanupOrphans(){await navigator.locks.request("rfs_global_import",{ifAvailable:!0},async e=>{if(e)try{const e=await getOpfsRoot(),t=await e.getDirectoryHandle("rfs"),r=await getRegistry();if(!_registryIsTrusted)return;const a=new Set(Object.keys(r)),n=[];for await(const e of t.keys())n.push(e);for(const e of n)a.has(e)||await navigator.locks.request(`rfs_write_${e}`,{ifAvailable:!0},async r=>{r&&await t.removeEntry(e,{recursive:!0}).catch(()=>{})})}catch(e){}})}navigator.storage.persist().then(e=>console.log(e?"Storage persisted.":"Storage not persisted."));let listFoldersAgain=!1;async function listFolders(){if(isListingFolders)return void(listFoldersAgain=!0);isListingFolders=!0;const e=document.getElementById("folderList");try{do{listFoldersAgain=!1;const t=await getRegistry(),r=document.createDocumentFragment();Object.keys(t).sort().forEach(e=>{const a=t[e],n=document.createElement("li");n.textContent="password"===a.encryptionType?`[Locked] ${e}`:e,r.appendChild(n)}),e.textContent="",e.appendChild(r)}while(listFoldersAgain)}finally{isListingFolders=!1}}async function deleteFolder(e,t=!1){const r=e||document.getElementById("deleteFolderName").value.trim();if(!r)return alert("Enter a folder name first.");if(!t&&!confirm(`Remove "${r}"?`))return;setUiBusy(!0),logProgress("Deleting...",!0),await updateRegistryEntry(r,null);const a=await getOpfsRoot();try{const e=await a.getDirectoryHandle("rfs");await e.removeEntry(r,{recursive:!0})}catch(e){"NotFoundError"!==e.name&&alert("RuntimeFS cannot currently remove the files of this folder; try closing other open RuntimeFS tabs.")}folderName===r&&(folderName=void 0,dirHandle=void 0,document.getElementById("openFolderName").value="",observer&&(observer.disconnect(),observer=null),showingSync&&(Array.from(document.body.getElementsByClassName("supportCheck")).forEach(e=>e.style.display="none"),showingSync=!1)),e||(document.getElementById("deleteFolderName").value=""),await listFolders(),logProgress("",!0),setUiBusy(!1)}async function prepareFolderForOpen(e){const t=(await getRegistry())[e];if(!t)return alert("Folder not found."),!1;const r=document.getElementById("regex").value.trim(),a=document.getElementById("headers").value.trim();t.rules===r&&t.headers===a||await updateRegistryEntry(e,{rules:r,headers:a});let n=null;if("password"===t.encryptionType){const r=prompt(`Enter password for "${e}":`);if(!r)return!1;n=await deriveKeyFromPassword(r,base64ToBuffer(t.salt))}const o=await waitForController();let s=-1;try{await Promise.race([new Promise(t=>{const s=new MessageChannel;s.port1.onmessage=()=>t(),o.postMessage({type:"SET_RULES",rules:r,headers:a,key:n,folderName:e},[s.port2])}),new Promise((e,t)=>{s=setTimeout(()=>t(new Error("Service Worker response timed out.")),4e3)})])}finally{clearTimeout(s)}return!0}function buildVirtualUrl(e,t){const r=(t||"index.html").split("/").map(encodeURIComponent).join("/");return`n/${encodeURIComponent(e)}/${r}`}async function openFile(e){const t=(e||document.getElementById("openFolderName").value.trim()).trim(),r=document.getElementById("fileName").value.trim();if(!t)return alert("Provide a folder name.");setUiBusy(!0);try{if(!await prepareFolderForOpen(t))return;const e=r.split("/").map(encodeURIComponent).join("/");window.open(`n/${encodeURIComponent(t)}/${e}`,"_blank")}catch(e){console.error(e),alert(e.message)}finally{setUiBusy(!1)}}async function exportData(){setUiBusy(!0);try{let e=prompt("Enter a password (or leave blank for no encryption):");if(null===e)return void setUiBusy(!1);e=e||void 0;const t=document.getElementById("c1").checked,r=document.getElementById("c2").checked,a=document.getElementById("c3").checked,n=document.getElementById("c4").checked,o=document.getElementById("c5").checked,s=document.getElementById("c6").checked,i=document.getElementById("c7").checked,l=[];if(n||o){const e=await getRegistry(),t={};for(const[r,a]of Object.entries(e))t[r]={...a};l.push({path:SYSTEM_FILE,data:JSON.stringify(t)})}const c={opfs:[SYSTEM_FILE]},d={opfs:[]};n&&!o?d.opfs.push("rfs"):!n&&o&&c.opfs.push("rfs"),logProgress("Starting export...",!0);let y=2;await LittleExport.exportData({fileName:"result",password:e,cookies:t,localStorage:r,idb:a,opfs:n||o,cache:s,sessionStorage:i,customItems:l,include:d.opfs.length>0?d:{},exclude:c,graceful:!0,logger:function(e){"Export cancelled."===e?y=1:logProgress(e)},onerror:e=>{y=0,console.error("Error while exporting:",e),alert("Error while exporting: "+e)}}),1!==y&&alert(2===y?"Export complete!":"Export may have failed or been incomplete.")}catch(e){console.error("Export failed:",e),alert("Export failed: "+e.message)}finally{setUiBusy(!1),logProgress("",!0)}}async function importData(){const e=document.createElement("input");e.type="file",e.onchange=e=>{e.target.files[0]&&startImport(e.target.files[0])},e.click()}async function startImport(e){await navigator.locks.request("rfs_global_import",async()=>{setUiBusy(!0),_registryCache=null,_registryIsTrusted=!1,localStorage.setItem("rfs_partial","1");let t=2;try{let r;logProgress("Starting import...",!0);const a={graceful:!0,logger:logProgress,onCustomItem:async(e,t)=>{e===SYSTEM_FILE&&(r=JSON.parse((new TextDecoder).decode(t)))},onerror:e=>{"A password is required to decrypt this data."===e.message?(alert("A password is required to decrypt this data."),t=1):(console.error(e),t=0,alert("Import encountered an error: "+e.message))}};a.source=e,await LittleExport.importData(a),logProgress("Merging metadata...",!0),await mutateRegistry(e=>{Object.assign(e,r||{})}),await validateAndRepairRegistry(),localStorage.removeItem("rfs_partial"),await listFolders(),1!==t&&alert(2===t?"Import complete! Reload to fix any issues.":"Import may have failed or been incomplete; reload to fix any issues.")}catch(e){console.error("Import failed:",e),alert("Import failed: "+(e&&e.message?e.message:e))}finally{setUiBusy(!1),logProgress("",!0)}})}async function validateAndRepairRegistry(){const e=await getOpfsRoot();try{const t=await e.getDirectoryHandle("rfs",{create:!0}),r=[];for await(const e of t.keys())r.push(e);await mutateRegistry(async e=>{let a=!1;r.forEach(t=>{e[t]||(e[t]={created:Date.now(),headers:localStorage.getItem("fsHeaders")||"",rules:localStorage.getItem("fsRegex")||""},a=!0)});const n=Object.keys(e);return await Promise.all(n.map(async r=>{try{await t.getDirectoryHandle(r)}catch(t){delete e[r],a=!0}})),!!a&&void 0})}catch(e){console.warn("Repair failed:",e)}}function base64ToBuffer(e){const t=atob(e),r=t.length,a=new Uint8Array(r);for(let e=0;e<r;e++)a[e]=t.charCodeAt(e);return a.buffer}function bufferToBase64(e){let t="";const r=new Uint8Array(e),a=r.byteLength;for(let e=0;e<a;e++)t+=String.fromCharCode(r[e]);return btoa(t)}async function deriveKeyFromPassword(e,t){const r=new TextEncoder,a=await crypto.subtle.importKey("raw",r.encode(e),{name:"PBKDF2"},!1,["deriveKey"]);return await crypto.subtle.deriveKey({name:"PBKDF2",salt:t,iterations:6e5,hash:"SHA-256"},a,{name:"AES-GCM",length:256},!0,["encrypt","decrypt"])}let syncTimeout=-1;async function syncFiles(){if(!folderName||!dirHandle)return alert("It seems that syncing isn't supported for your browser.");setUiBusy(!0),changes.length>0?(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)}async function syncAndOpenFile(){if(!folderName||!dirHandle)return alert("It seems that syncing isn't supported for your browser.");setUiBusy(!0),clearTimeout(syncTimeout),changes.length>0?(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)}async function performSyncToOpfs(){console.log(`Syncing ${changes.length}${1===changes.length?" change...":" changes..."}`),await navigator.locks.request(`rfs_write_${folderName}`,async()=>{const e=await getOpfsRoot(),t=await e.getDirectoryHandle("rfs"),r=await t.getDirectoryHandle(folderName),a=changes.splice(0,changes.length),n=[];for(const e of a){const t=e.relativePathComponents;if(!t)continue;const a=t.join("/");try{if("moved"===e.type&&e.relativePathMovedFrom){const t=e.relativePathMovedFrom;try{let e=r;for(let r=0;r<t.length-1;r++)e=await e.getDirectoryHandle(t[r]);await e.removeEntry(t[t.length-1],{recursive:!0})}catch(e){}}if("deleted"===e.type){let e=r;const a=t.slice(0,-1),n=t[t.length-1];for(const t of a)e=await e.getDirectoryHandle(t);await e.removeEntry(n,{recursive:!0})}else{let e=dirHandle;for(let r=0;r<t.length-1;r++)e=await e.getDirectoryHandle(t[r]);const n=await e.getFileHandle(t[t.length-1]),o=await n.getFile();await writeStreamToOpfs(r,a,o,{totalSize:o.size})}}catch(t){console.warn(`Sync failed for ${a}:`,t),n.push(e)}}n.length>0&&changes.push(...n),navigator.serviceWorker.controller&&navigator.serviceWorker.controller.postMessage({type:"INVALIDATE_CACHE",folderName:folderName})})}async function uploadAndEncryptWithPassword(){const e=document.getElementById("encryptFolderName").value.trim(),t=prompt("Enter a password:");if(!e||!t)return;let r;setUiBusy(!0);try{r=await window.showDirectoryPicker({mode:"read"})}catch(e){return setUiBusy(!1),void("AbortError"!==e.name&&alert("Error accessing folder: "+e.message))}await navigator.locks.request(`rfs_write_${e}`,async()=>{const a=await getOpfsRoot(),n=await a.getDirectoryHandle("rfs",{create:!0});try{await n.removeEntry(e,{recursive:!0})}catch(e){if("NotFoundError"!==e.name)return alert("RuntimeFS cannot currently remove this folder; try closing other open RuntimeFS tabs."),void setUiBusy(!1)}const o=await n.getDirectoryHandle(e,{create:!0}),s=await o.getDirectoryHandle("content",{create:!0}),i=crypto.getRandomValues(new Uint8Array(16)),l=await deriveKeyFromPassword(t,i),c={},d=[],y=[{dir:r,path:""}];let u=!0,f=0;const m=(async()=>{for(;y.length>0;){const{dir:e,path:t}=y.shift();for await(const r of e.values()){if(isJunk(r.name))continue;const e=t?`${t}/${r.name}`:r.name;if("file"===r.kind){const t=crypto.randomUUID();for(d.push({entry:r,entryPath:e,fileId:t});d.length>500;)await new Promise(e=>setTimeout(e,20))}else y.push({dir:r,path:e})}}u=!1})(),g=Array(4).fill(null).map(async()=>{for(;;){if(0===d.length){if(!u)break;await checkYield(!0);continue}const e=d.shift(),{entry:t,entryPath:r,fileId:a}=e,n=checkYield();if(n){const t=(f/1e6).toFixed(2);await logProgress(`Encrypting: ${t} MB (${e.entryPath})`),await n}const o=await t.getFile();f+=o.size,c[r]={id:a,size:o.size,type:o.type};const i=await s.getFileHandle(a,{create:!0}),y=await i.createWritable();if(o.size>0){const e=o.stream().getReader();let t=[],r=0;try{for(;;){const{done:a,value:n}=await e.read();if(n&&(t.push(n),r+=n.byteLength),(a||r>=4194304)&&r>0){const e=new Uint8Array(r);let n=0;for(const r of t)e.set(r,n),n+=r.byteLength;let o=0,s=!1;for(;o<r;){const n=r-o;if(!a&&n<4194304){const a=e.slice(o);t=[a],r=a.byteLength,s=!0;break}const i=checkYield();i&&await i;const c=Math.min(4194304,n),d=e.subarray(o,o+c),u=crypto.getRandomValues(new Uint8Array(12)),f=await crypto.subtle.encrypt({name:"AES-GCM",iv:u},l,d);o+=c,await y.write(u),await y.write(new Uint8Array(f))}s||(t=[],r=0)}if(a)break}}finally{e.releaseLock();try{await y.close()}catch(e){}}}else await y.close()}});await m,await Promise.all(g),await logProgress("Saving manifest...",!0);const p=JSON.stringify(c),w=(new TextEncoder).encode(p),h=crypto.getRandomValues(new Uint8Array(12)),v=await crypto.subtle.encrypt({name:"AES-GCM",iv:h},l,w),E=await o.getFileHandle("manifest.enc",{create:!0}),F=await E.createWritable();await F.write(i),await F.write(h),await F.write(new Uint8Array(v)),await F.close(),await updateRegistryEntry(e,{encryptionType:"password",salt:bufferToBase64(i)}),document.getElementById("encryptFolderName").value="",await listFolders(),setUiBusy(!1),await logProgress("",!0)})}async function openFileInPlace(){if(!navigator.serviceWorker.controller)return void alert("Service Worker is not controlling the page. Please reload and try again.");const e=document.getElementById("openFolderName").value.trim(),t=document.getElementById("fileName").value.trim();if(!e)return alert("Provide a folder name.");setUiBusy(!0);try{if(!await prepareFolderForOpen(e))return;const r=buildVirtualUrl(e,t),a=await fetch(r,{headers:{Accept:"text/html"}});if(!a.ok){if(403===a.status)return alert("Session authentication failed.");throw new Error(`Failed to load HTML: ${a.status} ${a.statusText}`)}let n=await a.text();const o=`<base href="${r.substring(0,r.lastIndexOf("/")+1)}">`;let s="";a.headers.forEach((e,t)=>{BODY_HEADERS.has(t.toLowerCase())||(s+=`<meta http-equiv="${t.replace(/"/g,"&quot;")}" content="${e.replace(/"/g,"&quot;")}">\n`)}),n=/<head\b[^>]*>/i.test(n)?n.replace(/(<head\b[^>]*>)/i,`$1${o}${s}`):/<html\b[^>]*>/i.test(n)?n.replace(/(<html\b[^>]*>)/i,`$1<head>${o}${s}</head>`):`<head>${o}${s}</head>${n}`,document.open(),document.write(n),document.close()}catch(e){console.error(e),alert(e.message)}finally{setUiBusy(!1)}}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",e=>{"Enter"!==e.key||currentlyBusy||uploadFolder()}),document.getElementById("openFolderName").addEventListener("keydown",e=>{"Enter"!==e.key||currentlyBusy||(e.shiftKey?openFileInPlace():e.ctrlKey||e.metaKey?syncAndOpenFile():openFile())}),document.getElementById("fileName").addEventListener("keydown",e=>{"Enter"!==e.key||currentlyBusy||(e.shiftKey?openFileInPlace():e.ctrlKey||e.metaKey?syncAndOpenFile():openFile())}),document.getElementById("deleteFolderName").addEventListener("keydown",e=>{"Enter"!==e.key||currentlyBusy||deleteFolder()}),document.getElementById("folderUploadFallbackInput").addEventListener("change",uploadFolderFallback),window.showSaveFilePicker&&(document.getElementById("encryptionSection").style.display="revert");const e=document.body;e.addEventListener("dragover",t=>{t.preventDefault(),e.style.backgroundColor="#385b7e"}),e.addEventListener("dragleave",()=>{e.style.backgroundColor=""}),e.addEventListener("drop",async t=>{if(t.preventDefault(),e.style.backgroundColor="",currentlyBusy)return;const r=Array.from(t.dataTransfer.items);if(!r.length)return;const a=r[0].webkitGetAsEntry?r[0].webkitGetAsEntry():null,n=[];for(let e=0;e<r.length;e++)if("file"===r[e].kind){const t=r[e].getAsFile();t&&n.push(t)}let o=null;if("file"===r[0].kind&&window.FileSystemDirectoryHandle)try{o=r[0].getAsFileSystemHandle()}catch(e){console.warn("FileSystemHandle access denied.")}let s=null;if(o)try{s=await o}catch(e){}if(await new Promise(e=>setTimeout(e,10)),s&&"directory"===s.kind)return void await analyzeAndImportFolder(s);if(a&&a.isDirectory){const e=prompt("Please choose a folder name:",a.name);if(e){setUiBusy(!0);const t=[],r=[{entry:a,path:""}];let n=0,o=!1,s=!1,i="";for(;r.length>0;){const{entry:e,path:l}=r.shift();if(isJunk(e.name))continue;if(e.isFile){const r=await new Promise((t,r)=>e.file(t,r));Object.defineProperty(r,"webkitRelativePath",{value:l+r.name}),t.push(r);const c=r.webkitRelativePath;if(c.endsWith(`data/custom/${SYSTEM_FILE}`))o=!0;else if(c.endsWith(`custom/${SYSTEM_FILE}`))o=!0,i="data";else if("ls.json"===c||c.endsWith("/ls.json")){const e=c.split("/");(1===e.length||2===e.length&&e[0]===a.name)&&(o=!0,i="data")}c.endsWith("manifest.enc")&&(s=!0),n++}else if(e.isDirectory){const t=e.createReader();let a;do{a=await new Promise((e,r)=>t.readEntries(e,r));for(const t of a)r.push({entry:t,path:l+e.name+"/"})}while(a.length>0)}let c=logProgress(`Scanned ${n} files...`);c&&await c}if(s)return alert("Encrypted folder import via drag-and-drop legacy mode is not supported in your browser."),void setUiBusy(!1);if(o){if(confirm("Found RuntimeFS data archive. Import? (This may overwrite multiple folders and already existing data.)")){const e=LittleExport.folderToTarStream(t,checkYield,{pathPrefix:i});return await startImport({stream:()=>e}),void setUiBusy(!1)}setUiBusy(!1)}await logProgress(`Processed ${t.length} files...`,!0),await processFilesAndStore(e,t),setUiBusy(!1)}return}const i=n;if(0!==i.length)if(i.length>1){const e=prompt(`You dropped ${i.length} files. Enter a name to create a new folder for them:`);e&&(setUiBusy(!0),await processFilesAndStore(e,i),setUiBusy(!1))}else{const e=i[0];if((/\.(tar\.gz|tar|enc|cbor)$/i.test(e.name)||e.name===SYSTEM_FILE)&&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(e);const t=e.name.replace(/\.[^/.]+$/,""),r=prompt(`Enter a folder name to upload "${e.name}" into:`,t);r&&(setUiBusy(!0),await processFilesAndStore(r,[e]),setUiBusy(!1))}}),navigator.serviceWorker.register(SW_URL).then(e=>{e.addEventListener("updatefound",()=>{const t=e.installing;t.addEventListener("statechange",()=>{"installed"===t.state&&navigator.serviceWorker.controller&&location.reload()})})}).catch(console.error),navigator.serviceWorker.addEventListener("message",async e=>{e.data&&("SW_READY"!==e.data.type&&"INVALIDATE_CACHE"!==e.data.type||(_registryCache=null,_registryIsTrusted=!1,await listFolders()))}),localStorage.getItem("rfs_partial")?validateAndRepairRegistry().then(async()=>{const e=await getOpfsRoot();for await(const t of e.keys())t.startsWith("._littleexport_temp_")&&await e.removeEntry(t,{recursive:!0}).catch(()=>{});return localStorage.removeItem("rfs_partial"),cleanupOrphans()}).then(listFolders):cleanupOrphans().then(listFolders);const t=document.getElementById("regex"),r=document.getElementById("headers");t.value=localStorage.getItem("fsRegex")||"",r.value=localStorage.getItem("fsHeaders")||"",t.addEventListener("input",()=>localStorage.setItem("fsRegex",t.value)),r.addEventListener("input",()=>localStorage.setItem("fsHeaders",r.value))});