[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_290":291,"_292":293},"routes/_app.x.$handle.$name",{"_98":97,"_31":43,"_106":88,"_26":107,"_13":14,"_108":-5,"_11":109,"_110":111,"_112":113,"_114":115,"_116":117,"_20":-5,"_118":-5,"_119":-5,"_120":24,"_121":122,"_123":57,"_124":-5,"_125":-5,"_126":127},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_41":42,"_31":43,"_36":44,"_45":-5,"_46":24,"_47":48,"_49":48,"_50":51,"_52":-5,"_18":53,"_54":55,"_56":57,"_58":-5,"_59":-5,"_60":61,"_62":63,"_64":65,"_66":67,"_68":69,"_70":-5,"_71":72,"_73":72,"_74":75,"_76":75,"_77":75,"_78":72,"_79":72,"_80":81,"_82":83,"_84":85,"_86":24},"version",20,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":-7,"_23":24,"_25":24,"_26":27,"_28":27},"file",{"_29":30,"_31":27,"_32":33,"_34":35,"_36":37,"_38":14,"_39":40,"_23":24},"previous","deleted",false,"deletedHere","path","storage.ts","latestPath","fileId","29e8b1c2-abe9-11f1-8145-1607ee4eb77e","name","fileType","script","content","import { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { inspect, validate, safeFetch, InspectError } from \"./inspector.ts\";\nconst MAX_FILE=8*1024*1024, APP_BUDGET=9*1024*1024;\nexport async function init() {\n await sqlite.batch([\n {sql:`CREATE TABLE IF NOT EXISTS audio_jobs (\n id TEXT PRIMARY KEY, source_url TEXT NOT NULL UNIQUE, resolved_url TEXT, status TEXT NOT NULL,\n filename TEXT, blob_key TEXT, size_bytes INTEGER, sha256 TEXT, content_type TEXT,\n result_json TEXT, error TEXT, attempts INTEGER NOT NULL DEFAULT 1,\n created_at TEXT NOT NULL, updated_at TEXT NOT NULL)`,args:[]},\n {sql:\"CREATE TABLE IF NOT EXISTS audio_assets (resolved_url TEXT PRIMARY KEY, blob_key TEXT NOT NULL, size_bytes INTEGER NOT NULL, sha256 TEXT NOT NULL, filename TEXT NOT NULL)\",args:[]},\n {sql:\"CREATE TABLE IF NOT EXISTS audio_mutex (id INTEGER PRIMARY KEY, token TEXT, expires_at INTEGER NOT NULL)\",args:[]},\n {sql:\"INSERT OR IGNORE INTO audio_mutex(id,expires_at) VALUES(1,0)\",args:[]}\n ]);\n}\nfunction publicJob(row:any) {\n if(!row)return null;\n return {id:row.id,sourceUrl:row.source_url,resolvedUrl:row.resolved_url,status:row.status,filename:row.filename,\n sizeBytes:row.size_bytes,sha256:row.sha256,contentType:row.content_type,error:row.error,attempts:row.attempts,\n createdAt:row.created_at,updatedAt:row.updated_at,downloadUrl:row.status===\"saved\"?\"/api/files/\"+row.id:null};\n}\nasync function getJob(url:string) {\n return (await sqlite.execute({sql:\"SELECT * FROM audio_jobs WHERE source_url=?\",args:[url]})).rows[0];\n}\nfunction response(row:any,reused=false) {\n return {ok:row.status===\"saved\",reused,record:publicJob(row),inspection:row.result_json?JSON.parse(row.result_json):null};\n}\nexport async function history(offset=0) {\n await init();\n const rows=await sqlite.execute({sql:\"SELECT * FROM audio_jobs ORDER BY updated_at DESC LIMIT 25 OFFSET ?\",args:[offset]});\n const totals=await sqlite.execute(\"SELECT status,COUNT(*) AS count FROM audio_jobs GROUP BY status\");\n const used=(await blob.list(\"audio:\")).reduce((n:any,b:any)=>n+b.size,0);\n return {records:rows.rows.map(publicJob),offset,hasMore:rows.rows.length===25,counts:totals.rows,\n storage:{usedBytes:used,appBudgetBytes:APP_BUDGET,maxFileBytes:MAX_FILE},publicLibrary:true};\n}\nasync function fullMp3(url:string) {\n const {response:r,url:resolvedUrl}=await safeFetch(url,AbortSignal.timeout(25000),true);\n const len=r.headers.get(\"content-length\"), type=(r.headers.get(\"content-type\")||\"\").split(\";\")[0].toLowerCase();\n if(r.status!==200) {await r.body?.cancel();throw new Error(\"Full download returned HTTP \"+r.status+\"; partial files will not be saved.\");}\n if(len && Number(len)>MAX_FILE) {await r.body?.cancel();throw new Error(\"MP3 exceeds the 8 MiB per-file limit.\");}\n const reader=r.body?.getReader();if(!reader)throw new Error(\"Source returned no body.\");\n let size=0;const chunks:Uint8Array[]=[];\n try {while(true) {const {done,value}=await reader.read();if(done)break;size+=value.length;\n if(size>MAX_FILE)throw new Error(\"MP3 exceeds the 8 MiB per-file limit.\");chunks.push(value);}}\n finally{await reader.cancel().catch(()=>{});}\n if(!size)throw new Error(\"Source returned an empty file.\");\n // Content-Length refers to encoded bytes when compression is enabled.\n if(len && !r.headers.get(\"content-encoding\") && size!==Number(len))throw new Error(\"Incomplete download; nothing was saved.\");\n const bytes=new Uint8Array(size);let offset=0;for(const part of chunks){bytes.set(part,offset);offset+=part.length;}\n const head=new TextDecoder().decode(bytes.subarray(0,256)).trimStart();\n const id3=bytes[0]===73&&bytes[1]===68&&bytes[2]===51;\n // MPEG Layer III frame sync; excludes AAC ADTS and other MPEG layers.\n const frame=bytes[0]===255&&(bytes[1]&224)===224&&(bytes[1]&6)===2;\n if(/html|xml|json/.test(type)||head.startsWith(\"<\")||(!id3&&!frame))throw new Error(\"Downloaded bytes do not have an MP3 signature. No conversion is performed.\");\n const hash=Array.from(new Uint8Array(await crypto.subtle.digest(\"SHA-256\",bytes))).map(b=>b.toString(16).padStart(2,\"0\")).join(\"\");\n return {bytes,size,hash,resolvedUrl};\n}\nexport async function processUrl(raw:unknown) {\n if(typeof raw!==\"string\"||raw.length>4096)throw new InspectError(\"Provide a URL of at most 4096 characters.\",400);\n const url=validate(raw.trim()).href;await init();\n let previous=await getJob(url);\n if(previous && [\"saved\",\"no_audio\",\"unsupported\"].includes(String(previous.status)))return response(previous,true);\n const token=crypto.randomUUID(), now=Date.now();\n const lock=await sqlite.execute({sql:\"UPDATE audio_mutex SET token=?,expires_at=? WHERE id=1 AND expires_ata.format===\"MP3 (ID3)\" || (a.format===\"MPEG audio\" && (a.contentType===\"audio/mpeg\" || /\\.mp3(?:$|[?#])/i.test(a.resolvedUrl))));\n if(!chosen) {\n const status=result.audio.length?\"unsupported\":\"no_audio\";\n const error=status===\"unsupported\"?\"Audio was found, but this download POC saves MP3 only. No conversion is performed.\":\"No accessible audio found.\";\n await sqlite.execute({sql:\"UPDATE audio_jobs SET status=?,error=?,updated_at=? WHERE id=?\",args:[status,error,new Date().toISOString(),id]});\n return response(await getJob(url));\n }\n let asset=(await sqlite.execute({sql:\"SELECT * FROM audio_assets WHERE resolved_url=?\",args:[chosen.resolvedUrl]})).rows[0];\n let duplicateAsset=!!asset;\n if(!asset) {\n const data=await fullMp3(chosen.resolvedUrl);\n const key=\"audio:\"+data.hash+\".mp3\";\n let filename=(chosen.filename||\"audio.mp3\").replace(/[^a-zA-Z0-9._-]/g,\"_\").slice(0,150);\n if(!filename.toLowerCase().endsWith(\".mp3\"))filename+=\".mp3\";\n const entries=await blob.list(\"audio:\");\n if(!entries.some((b:any)=>b.key===key)){\n const used=entries.reduce((n:any,b:any)=>n+b.size,0);\n if(used+data.size>APP_BUDGET)throw new Error(\"This app's 9 MiB storage budget is full. Existing saved files were kept.\");\n await blob.set(key,data.bytes);\n }else duplicateAsset=true;\n asset={resolved_url:data.resolvedUrl,blob_key:key,size_bytes:data.size,sha256:data.hash,filename};\n await sqlite.execute({sql:\"INSERT OR REPLACE INTO audio_assets(resolved_url,blob_key,size_bytes,sha256,filename) VALUES(?,?,?,?,?)\",args:[chosen.resolvedUrl,key,data.size,data.hash,filename]});\n }\n await sqlite.execute({sql:`UPDATE audio_jobs SET status='saved',resolved_url=?,filename=?,blob_key=?,size_bytes=?,sha256=?,content_type='audio/mpeg',error=NULL,updated_at=? WHERE id=?`,\n args:[chosen.resolvedUrl,asset.filename,asset.blob_key,asset.size_bytes,asset.sha256,new Date().toISOString(),id]});\n return {...response(await getJob(url)),duplicateAsset};\n }catch(e) {\n const message=(e as Error).message||\"Download failed.\";\n await sqlite.execute({sql:\"UPDATE audio_jobs SET status='failed',error=?,updated_at=? WHERE id=?\",args:[message,new Date().toISOString(),id]});\n return response(await getJob(url));\n }\n }finally{\n await sqlite.execute({sql:\"UPDATE audio_mutex SET expires_at=0,token=NULL WHERE id=1 AND token=?\",args:[token]});\n }\n}\nexport async function download(id:string) {\n await init();\n const row=(await sqlite.execute({sql:\"SELECT * FROM audio_jobs WHERE id=? AND status='saved'\",args:[id]})).rows[0];\n if(!row)return Response.json({error:\"Saved file not found.\"},{status:404});\n try{\n const stored=await blob.get(String(row.blob_key));\n return new Response(stored.body,{headers:{\"Content-Type\":\"audio/mpeg\",\"Content-Length\":String(row.size_bytes),\"Content-Disposition\":'attachment; filename=\"'+row.filename+'\"',\"Cache-Control\":\"private, no-store\",\"X-Content-Type-Options\":\"nosniff\",\"X-Audio-SHA256\":String(row.sha256)}});\n }catch{return Response.json({error:\"The saved blob is unavailable.\"},{status:404});}\n}\n","createdAt",["D",1788915334367],"branchVersion","branchId","28a047d3-5295-4f5c-942b-0a5bf4f378ce","id","bdedbd3b-32ac-408c-b811-167ee9493295","audio-url-inspector",["D",1788914491210],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Resolve audio from URLs and inspect metadata. No transcription.","imageUrl","22d9499e-268b-4d84-b877-2162e7b516e0","pinnedFileId","01a0839c-dfb7-737a-b44f-56735981b04d","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a083cf-8df7-773b-acea-1b3fc2faed11","tursoName","bdedbd3b32ac408cb811167ee9493295","tursoHostname","bdedbd3b32ac408cb811167ee9493295-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789525245864],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_98":97,"_105":-5},"org",{"_98":97,"_99":100,"_101":-5,"_18":-5,"_102":103,"_104":24},"branch",{"_13":87,"_31":88,"_41":40,"_89":42,"_90":-5,"_91":-5,"_92":-5,"_93":-5,"_94":-5,"_95":43,"_96":97},"isOwned",52,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","scott_mike","handle","displayName","scott-mike","avatar","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_41":42,"_31":43,"_36":285,"_45":-5,"_46":24,"_47":48,"_49":48,"_50":51,"_52":-5,"_18":53,"_54":55,"_56":57,"_58":-5,"_59":-5,"_60":61,"_62":63,"_64":65,"_66":67,"_68":286,"_70":-5,"_71":72,"_73":72,"_74":75,"_76":75,"_77":75,"_78":72,"_79":72,"_80":287,"_82":288,"_84":289,"_86":24},"tree",[203,210,211,212,213,214,215,216],"files",[203,204,205,206,207,208,209,210,211,212,213,214,215,216],"counts",{"_193":61,"_194":178,"_195":61,"_196":197,"_198":199},"contents",[128,129,130,131,132,133,134,135],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_41":187,"_31":188,"_29":189,"_137":-5,"_39":40,"_38":178,"_138":57,"_36":190,"_13":61,"_32":191,"_34":-5,"_23":24,"_140":-5,"_26":192},{"_41":181,"_31":182,"_29":183,"_137":-5,"_39":40,"_38":178,"_138":57,"_36":184,"_13":61,"_32":20,"_34":185,"_23":24,"_140":-5,"_26":186},{"_41":173,"_31":174,"_29":175,"_137":-5,"_39":40,"_38":176,"_138":24,"_36":177,"_13":178,"_32":20,"_34":179,"_23":24,"_140":-5,"_26":180},{"_41":166,"_31":167,"_29":168,"_137":-5,"_39":40,"_38":169,"_138":57,"_36":170,"_13":147,"_32":33,"_34":171,"_23":24,"_140":-5,"_26":172},{"_41":158,"_31":159,"_29":55,"_137":-5,"_39":40,"_38":160,"_138":24,"_36":161,"_13":162,"_32":163,"_34":164,"_23":24,"_140":-5,"_26":165},{"_41":150,"_31":151,"_29":152,"_137":-5,"_39":40,"_38":153,"_138":57,"_36":154,"_13":155,"_32":33,"_34":156,"_23":24,"_140":-5,"_26":157},{"_41":142,"_31":143,"_29":144,"_137":-5,"_39":40,"_38":145,"_138":57,"_36":146,"_13":147,"_32":33,"_34":148,"_23":24,"_140":-5,"_26":149},{"_41":136,"_31":27,"_29":30,"_137":-5,"_39":40,"_38":14,"_138":24,"_36":139,"_13":61,"_32":33,"_34":35,"_23":24,"_140":-5,"_26":141},"886060da-b7ab-4292-bf9c-aeb01d203a1a","parentId","latest",["D",1788915334367],"label",[27],"b9def2e5-0df9-4ee5-bcae-3da98c6116e7","smoke-tests.ts","36060fbe-abe8-11f1-ad79-1607ee4eb77e",16,["D",1788914953743],2,"import { httpEndpoint } from \"https://esm.town/v/std/utils/index.ts\";\nasync function run() {\n const base=\"https://scoot--01a0839cdfb7737ab44f56735981b04d.web.val.run\";\n const cases=[\n {name:\"Direct MP3\",url:\"https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3\",check:(b:any,s:number)=>s===200&&b.ok&&b.inputType===\"direct_audio\"&&b.audio[0].sizeBytes>1000000},\n {name:\"Real webpage\",url:\"https://samplelib.com/sample-mp3.html\",check:(b:any,s:number)=>s===200&&b.ok&&b.audio.length>0&&b.inputType===\"webpage_or_feed\"},\n {name:\"Relative WAV source\",url:base+\"/demo/episode\",check:(b:any,s:number)=>s===200&&b.ok&&b.audio[0].wav.durationSeconds===1},\n {name:\"Redirect\",url:base+\"/demo/redirect\",check:(b:any,s:number)=>s===200&&b.ok&&b.audio[0].redirects.length===1},\n {name:\"JSON-LD\",url:base+\"/demo/metadata\",check:(b:any,s:number)=>s===200&&b.ok&&b.audio[0].discoveredBy===\"JSON-LD\"},\n {name:\"RSS enclosure\",url:base+\"/demo/feed.xml\",check:(b:any,s:number)=>s===200&&b.ok&&b.audio[0].discoveredBy===\"RSS enclosure\"},\n {name:\"HTML masquerading as MP3\",url:base+\"/demo/not-audio.mp3\",check:(b:any,s:number)=>s===200&&b.inputType===\"webpage_or_feed\"},\n {name:\"No audio\",url:base,check:(b:any,s:number)=>s===200&&!b.ok&&b.audio.length===0},\n {name:\"Invalid URL\",url:\"not a url\",check:(b:any,s:number)=>s===400&&!b.ok},\n {name:\"Local address blocked\",url:\"http://127.0.0.1/\",check:(b:any,s:number)=>s===400&&!b.ok},\n {name:\"Unsupported protocol\",url:\"file:///etc/passwd\",check:(b:any,s:number)=>s===400&&!b.ok}\n ];\n const results=[];\n for(const t of cases) {\n try {\n const r=await fetch(base+\"/api/inspect\",{method:\"POST\",headers:{\"Content-Type\":\"application/json\"},body:JSON.stringify({url:t.url})});\n const b=await r.json();results.push({name:t.name,pass:t.check(b,r.status),status:r.status,error:b.error||null});\n }catch(e){results.push({name:t.name,pass:false,error:String(e)});}\n }\n console.log(JSON.stringify({passed:results.filter(r=>r.pass).length,total:results.length,results}));\n return results;\n}\n\nexport default await run();\n",[143],"ead9bbca-507f-4ec4-a1cd-6279d5ae269f","inspector.ts","7fcbc78e-abe7-11f1-9cb5-1607ee4eb77e",19,["D",1788915329299],4,"import * as cheerio from \"npm:cheerio@1.0.0\";\nconst EXT = /\\.(mp3|m4a|wav|ogg|oga|opus|aac|flac|aiff)(?:$|[?#])/i;\nexport class InspectError extends Error {\n constructor(message: string, public status = 422) { super(message); }\n}\nexport function validate(raw: string) {\n let u: URL;\n try { u = new URL(raw); } catch { throw new InspectError(\"Enter a complete public http:// or https:// URL.\", 400); }\n if (![\"https:\", \"http:\"].includes(u.protocol) || u.username || u.password || (u.port && ![\"80\", \"443\"].includes(u.port))) throw new InspectError(\"Only public HTTP(S) URLs on standard ports are supported.\", 400);\n const h = u.hostname.toLowerCase().replace(/\\.$/, \"\");\n if (!h.includes(\".\") || h.includes(\":\") || /(^|\\.)(localhost|local|internal|test|invalid)$/.test(h)) throw new InspectError(\"Local and private network URLs are not supported.\", 400);\n if (/^\\d+\\.\\d+\\.\\d+\\.\\d+$/.test(h) && !publicV4(h)) throw new InspectError(\"Private IP addresses are not supported.\", 400);\n u.hash = \"\";\n return u;\n}\nfunction publicV4(ip: string) {\n const [a,b] = ip.split(\".\").map(Number);\n return !(a === 0 || a === 10 || a === 127 || a >= 224 || (a === 169 && b === 254) || (a === 172 && b >= 16 && b <= 31) || (a === 192 && (b === 168 || b === 0)) || (a === 100 && b >= 64 && b <= 127) || (a === 198 && (b === 18 || b === 19)));\n}\nexport async function safeFetch(raw: string, signal: AbortSignal, full = false) {\n let u = validate(raw);\n const redirects: string[] = [];\n for (let i=0; i<6; i++) {\n signal.throwIfAborted();\n // Validate DNS answers as well as literal hosts before each redirect hop.\n if (!/^\\d+\\.\\d+\\.\\d+\\.\\d+$/.test(u.hostname)) {\n const answers = await Promise.all([\"A\",\"AAAA\"].map(async type => {\n const res=await fetch(\"https://cloudflare-dns.com/dns-query?name=\"+encodeURIComponent(u.hostname)+\"&type=\"+type,{headers:{Accept:\"application/dns-json\"},signal});\n if(!res.ok)throw new InspectError(\"DNS lookup failed.\");\n const data=await res.json();\n return (data.Answer||[]).filter((a:any)=>a.type===1||a.type===28).map((a:any)=>a.data as string);\n }));\n const ips: string[] = answers.flat();\n if (!ips.length) throw new InspectError(\"Could not resolve the source hostname.\");\n if (ips.some(ip => ip.includes(\":\") ? !/^[23][0-9a-f]{3}:/i.test(ip) : !publicV4(ip))) throw new InspectError(\"Source resolves to a non-public network address.\",400);\n }\n const response = await fetch(u, { redirect:\"manual\", signal, headers: !full && EXT.test(u.href) ? {Range:\"bytes=0-65535\", Accept:\"*/*\"} : {Accept:\"*/*\"} });\n if ([301,302,303,307,308].includes(response.status)) {\n await response.body?.cancel();\n const location = response.headers.get(\"location\");\n if (!location) throw new InspectError(\"Source returned a redirect without a destination.\");\n u = validate(new URL(location,u).href); redirects.push(u.href); continue;\n }\n if (!response.ok) { await response.body?.cancel(); throw new InspectError(\"Source returned HTTP \"+response.status+\". It may block automated access.\"); }\n return {response, url:u.href, redirects};\n }\n throw new InspectError(\"Source exceeded the five-redirect limit.\");\n}\nasync function sample(response: Response, limit: number) {\n const reader = response.body?.getReader();\n if (!reader) return new Uint8Array();\n const chunks: Uint8Array[] = []; let total=0;\n try {\n while (total{}); }\n const data=new Uint8Array(total); let offset=0;\n for(const chunk of chunks) {data.set(chunk,offset);offset+=chunk.length;}\n return data;\n}\nfunction signature(data: Uint8Array) {\n const s = new TextDecoder(\"latin1\").decode(data.subarray(0,32));\n if(s.startsWith(\"RIFF\") && s.slice(8,12)===\"WAVE\") return \"WAV\";\n if(s.startsWith(\"fLaC\")) return \"FLAC\";\n if(s.startsWith(\"OggS\")) return \"Ogg\";\n if(s.startsWith(\"ID3\")) return \"MP3 (ID3)\";\n if(data[0]===255 && (data[1]&246)===240) return \"AAC\";\n if(data[0]===255 && (data[1]&224)===224) return \"MPEG audio\";\n if(s.slice(4,8)===\"ftyp\") return \"MP4/M4A container\";\n if(s.startsWith(\"FORM\") && /AIFF|AIFC/.test(s.slice(8,12))) return \"AIFF\";\n return null;\n}\nfunction wavMetadata(data: Uint8Array) {\n if(signature(data)!==\"WAV\") return null;\n const v=new DataView(data.buffer,data.byteOffset,data.byteLength); const decode=new TextDecoder();\n let channels: number|null=null, sampleRate: number|null=null, bitsPerSample: number|null=null, byteRate=0, dataBytes: number|null=null;\n for(let pos=12; pos+8<=data.length;) {\n const id=decode.decode(data.subarray(pos,pos+4)); const size=v.getUint32(pos+4,true);\n if(id===\"fmt \" && size>=16 && pos+24<=data.length) {\n channels=v.getUint16(pos+10,true); sampleRate=v.getUint32(pos+12,true);\n byteRate=v.getUint32(pos+16,true); bitsPerSample=v.getUint16(pos+22,true);\n }\n if(id===\"data\") {dataBytes=size; break;}\n pos+=8+size+(size%2);\n }\n return {channels,sampleRate,bitsPerSample,durationSeconds:byteRate && dataBytes!=null ? dataBytes/byteRate : null};\n}\nasync function inspectResource(raw: string, signal: AbortSignal) {\n const fetched=await safeFetch(raw,signal);\n const h=fetched.response.headers;\n const contentType=(h.get(\"content-type\")||\"\").split(\";\")[0].toLowerCase();\n const looksAudio=contentType.startsWith(\"audio/\") || EXT.test(fetched.url);\n const bytes=await sample(fetched.response,looksAudio?65536:1048576);\n const detected=signature(bytes);\n const textPrefix=new TextDecoder().decode(bytes.subarray(0,256)).trimStart();\n const isMarkup=/^(0 && !isMarkup && (contentType.startsWith(\"audio/\") || (!!detected && (!containerOnly || /\\.(m4a|oga|opus)(?:$|[?#])/i.test(fetched.url))));\n const totalMatch=h.get(\"content-range\")?.match(/\\/(\\d+)$/);\n const length=totalMatch?Number(totalMatch[1]):fetched.response.status===200 && h.get(\"content-length\")?Number(h.get(\"content-length\")):null;\n return {\n fetched, bytes, isAudio,\n metadata: {\n url:raw, resolvedUrl:fetched.url, httpStatus:fetched.response.status, contentType:contentType||null,\n sizeBytes:length, sizeSource:totalMatch?\"Content-Range\":length!=null?\"Content-Length\":null,\n format:detected || (contentType.startsWith(\"audio/\")?contentType:null),\n evidence:detected?\"file signature\":isAudio?\"audio Content-Type\":\"not verified as audio\",\n filename:new URL(fetched.url).pathname.split(\"/\").pop()||null,\n supportsRanges:fetched.response.status===206 || h.get(\"accept-ranges\")===\"bytes\",\n inspectedBytes:bytes.length, redirects:fetched.redirects,\n lastModified:h.get(\"last-modified\"), wav:wavMetadata(bytes),\n }\n };\n}\nfunction discover(text: string, base: string) {\n const $=cheerio.load(text,{xmlMode:/^\\s*<\\?xml|]|]/i.test(text)});\n const candidates: {url:string;source:string;label:string|null}[]=[];\n const feeds:string[]=[];\n let pageBase=base;\n try {const b=$(\"base[href]\").first().attr(\"href\");if(b)pageBase=new URL(b,base).href;} catch{}\n const add=(raw:string|undefined,source:string,label?:string)=>{\n if(!raw || candidates.length>=30)return;\n try {const url=validate(new URL(raw,pageBase).href).href;if(!candidates.some(c=>c.url===url))candidates.push({url,source,label:label?.slice(0,240)||null});}catch{}\n };\n $(\"audio[src], audio source[src], source[type^='audio/']\").each((_,e)=>add($(e).attr(\"src\"),\"audio/source tag\"));\n $(\"meta[property], meta[name]\").each((_,e)=>{\n const key=$(e).attr(\"property\")||$(e).attr(\"name\")||\"\";\n if(/^(og:audio(?::url|:secure_url)?|twitter:player:stream)$/.test(key)) add($(e).attr(\"content\"),key);\n });\n $(\"enclosure[url], link[rel='enclosure']\").each((_,e)=>{\n const raw=$(e).attr(\"url\")||$(e).attr(\"href\");if(($(e).attr(\"type\")||\"\").startsWith(\"audio/\")||EXT.test(raw||\"\"))add(raw,\"RSS enclosure\",$(e).parent().find(\"title\").first().text());\n });\n $(\"a[href], link[href]\").each((_,e)=>{\n const href=$(e).attr(\"href\")||\"\";\n if(EXT.test(href))add(href,\"audio link\",$(e).text().trim());\n if(e.tagName===\"link\" && /rss|atom/.test($(e).attr(\"type\")||\"\") && feeds.length<2)try{feeds.push(validate(new URL(href,pageBase).href).href);}catch{}\n });\n function walk(o: any, depth=0) {\n if(!o || typeof o!==\"object\" || depth>12)return;\n if(Array.isArray(o)){o.slice(0,100).forEach(x=>walk(x,depth+1));return;}\n for(const [key,value] of Object.entries(o)) {\n if(typeof value===\"string\" && ([\"contentUrl\",\"audio\",\"associatedMedia\"].includes(key) || ([\"url\",\"embedUrl\"].includes(key)&&EXT.test(value)))) add(value,\"JSON-LD\");\n else if(typeof value===\"object\")walk(value,depth+1);\n }\n }\n $(\"script[type='application/ld+json']\").each((_,e)=>{try{walk(JSON.parse($(e).text()));}catch{}});\n return {title:$(\"title\").first().text().trim().slice(0,300)||null,candidates,feeds};\n}\nexport async function inspect(raw: unknown) {\n if(typeof raw!==\"string\" || raw.length>4096) throw new InspectError(\"Provide a URL string of at most 4096 characters.\",400);\n const input=validate(raw.trim()).href, started=Date.now(), signal=AbortSignal.timeout(22000);\n const first=await inspectResource(input,signal);\n const limits={timeBudgetSeconds:22,maxPageBytes:1048576,maxAudioSampleBytes:65536,maxCandidatesInspected:5,maxFeeds:2};\n if(first.isAudio)return {ok:true,inputUrl:input,inputType:\"direct_audio\",page:null,audio:[{...first.metadata,discoveredBy:\"input URL\"}],candidates:[],warnings:[],limits,elapsedMs:Date.now()-started};\n if(!/text|html|xml|json/.test(first.metadata.contentType||\"\") && !new TextDecoder().decode(first.bytes.subarray(0,100)).trimStart().startsWith(\"<\")) throw new InspectError(\"The URL did not return recognizable audio or a webpage/feed.\");\n const page=discover(new TextDecoder().decode(first.bytes),first.fetched.url);\n const warnings:string[]=[];\n if(first.bytes.length>=1048576)warnings.push(\"Page inspection stopped at 1 MiB; links beyond that may be missed.\");\n let candidates=page.candidates;\n if(!candidates.length) for(const feed of page.feeds) {\n try {\n const f=await inspectResource(feed,signal);\n const found=discover(new TextDecoder().decode(f.bytes),f.fetched.url);\n candidates.push(...found.candidates.map(c=>({...c,source:\"linked feed: \"+c.source})));\n warnings.push(\"Audio candidates came from a linked podcast feed and may include other episodes.\");\n } catch(e) {warnings.push(\"Linked feed: \"+(e as Error).message);}\n }\n candidates=Array.from(new Map(candidates.map(c=>[c.url,c])).values()).slice(0,30);\n const audio:any[]=[]; const checked:any[]=[];\n for(const candidate of candidates.slice(0,5)) {\n try{\n const r=await inspectResource(candidate.url,signal);\n checked.push({...candidate,verified:r.isAudio,error:r.isAudio?null:\"Resource did not return audio.\"});\n if(r.isAudio)audio.push({...r.metadata,discoveredBy:candidate.source,label:candidate.label});\n }catch(e){checked.push({...candidate,verified:false,error:(e as Error).message});}\n }\n if(!audio.length)warnings.push(\"No accessible audio verified. JavaScript-only players, authenticated media, DRM and embedded platforms are not resolved by this POC.\");\n if(candidates.length>5)warnings.push(\"Only the first five audio candidates were inspected.\");\n return {ok:audio.length>0,inputUrl:input,inputType:\"webpage_or_feed\",page:{title:page.title,resolvedUrl:first.fetched.url,contentType:first.metadata.contentType,redirects:first.fetched.redirects},audio,candidates:checked,discoveredCandidateCount:candidates.length,warnings,limits,elapsedMs:Date.now()-started};\n}\n",[151],"18f08a8a-476f-47a9-a745-ce1de78fac19","index.ts",13,["D",1788914895413],3,"http","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono@4\";\nimport { Root } from \"./frontend/root.tsx\";\nimport { inspect, InspectError } from \"./inspector.ts\";\nimport { Demo, tone, MetadataDemo, FeedDemo } from \"./demo.tsx\";\nimport { bodyLimit } from \"npm:hono@4/body-limit\";\nconst app = new Hono();\napp.use(\"/api/inspect\",bodyLimit({maxSize:8192,onError:c=>c.json({ok:false,error:\"Request body too large.\"},413)}));\napp.get(\"/demo/metadata\",c=>c.html(MetadataDemo()));\napp.get(\"/demo/feed.xml\",c=>c.body(FeedDemo().toString(),200,{\"Content-Type\":\"application/rss+xml\"}));\napp.get(\"/demo/not-audio.mp3\",c=>c.html(MetadataDemo()));\napp.get(\"/demo/episode\", c=>c.html(Demo()));\napp.get(\"/demo/tone.wav\", ()=>tone());\napp.get(\"/demo/redirect\",c=>c.redirect(\"/demo/tone.wav\"));\napp.get(\"/\", c => c.html(Root()));\napp.get(\"/__immutable/*\", c => serveImmutableFile(c.req.path));\napp.get(\"/source\", c => c.redirect(parseVal().links.self.val));\napp.get(\"/api/health\", c => c.json({ok:true, service:\"audio-url-inspector\",transcription:false}));\nasync function handle(c: any) {\n c.header(\"Cache-Control\",\"no-store\");\n try {\n let url;\n if(c.req.method===\"GET\") url=c.req.query(\"url\");\n else {\n const text=await c.req.text();\n if(text.length>8192)return c.json({ok:false,error:\"Request body too large.\"},413);\n try {url=JSON.parse(text).url;}catch{return c.json({ok:false,error:'Send JSON with a \"url\" field.'},400);}\n }\n return c.json(await inspect(url));\n } catch(e) {\n const err=e as Error;\n const status=e instanceof InspectError?e.status:err.name===\"TimeoutError\"||err.name===\"AbortError\"?504:502;\n return c.json({ok:false,error:status===504?\"Source inspection timed out. Try a direct audio URL.\":err.message},status);\n }\n}\napp.get(\"/api/inspect\",handle);\napp.post(\"/api/inspect\",handle);\napp.onError(err=>Promise.reject(err));\nexport default app.fetch;\n",[159],"5961fb6e-d7ff-4e21-9a67-eba41f3308a7","demo.tsx","f24e739c-abe7-11f1-9c86-1607ee4eb77e",17,["D",1788915000654],"/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nexport function Demo() {\n return Demo podcast episode · Audio Inspector

A one-second test tone

This public demonstration page contains a relative audio source. The WAV is generated by this Val Town app.

A one-second test tone

Audio referenced in JSON-LD

Diff · v20