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text: string }[]> {\n const r = await withTimeout(\n fetch(\"https://youtubetranscript.com/?server_vid2=\" + v, {\n headers: { ...UA, \"Referer\": \"https://youtubetranscript.com/\" },\n }),\n 10000,\n );\n if (!r.ok) throw new Error(\"HTTP \" + r.status);\n const xml = await r.text();\n if (/error/i.test(xml) && xml.length < 300) {\n throw new Error(\"risposta di errore\");\n }\n const segs: { t: number; text: string }[] = [];\n for (\n const m of xml.matchAll(\n /]*(?:data-)?start=\"([\\d.]+)\"[^>]*>([\\s\\S]*?)<\\/text>/g,\n )\n ) {\n const text = decodeEnt(m[2]).replace(/<[^>]+>/g, \"\").replace(/\\s+/g, \" \")\n .trim();\n if (text) segs.push({ t: parseFloat(m[1]), text });\n }\n if (!segs.length) throw new Error(\"nessun segmento nella risposta\");\n return segs;\n}\n\n// youtubetotranscript.com incorpora i segmenti nell'HTML della pagina\nasync function siteYouTubeToTranscript(\n v: string,\n): Promise<{ t: number; text: string }[]> {\n const r = await withTimeout(\n fetch(\n \"https://youtubetotranscript.com/transcript?v=\" + v +\n \"¤t_language_code=en\",\n {\n headers: { ...UA, \"Referer\": \"https://youtubetotranscript.com/\" },\n },\n ),\n 12000,\n );\n if (!r.ok) throw new Error(\"HTTP \" + r.status);\n const html = await r.text();\n const segs: { t: number; text: string }[] = [];\n for (\n const m of html.matchAll(\n /]*data-start=\"([\\d.]+)\"[^>]*>([\\s\\S]*?)<\\/span>/g,\n )\n ) {\n const text = decodeEnt(m[2]).replace(/<[^>]+>/g, \"\").replace(/\\s+/g, \" \")\n .trim();\n if (text) segs.push({ t: parseFloat(m[1]), text });\n }\n if (!segs.length) throw new Error(\"nessun segmento nella pagina\");\n return segs;\n}\n\n// ════ FONTI CLASSICHE ═══════════════════════════════════════════\n\nasync function ytPlayer(v: string) {\n const pr = await withTimeout(\n fetch(\"https://www.youtube.com/youtubei/v1/player\", {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n \"User-Agent\":\n \"com.google.android.youtube/20.10.38 (Linux; U; Android 14) gzip\",\n },\n body: JSON.stringify({\n context: {\n client: {\n clientName: \"ANDROID\",\n clientVersion: \"20.10.38\",\n androidSdkVersion: 34,\n hl: \"it\",\n },\n },\n videoId: v,\n contentCheckOk: true,\n racyCheckOk: true,\n }),\n }),\n 8000,\n );\n const data = await pr.json();\n const ps = data.playabilityStatus || {};\n if (ps.status && ps.status !== \"OK\") throw new Error(ps.status);\n const tracks =\n data.captions?.playerCaptionsTracklistRenderer?.captionTracks || [];\n if (!tracks.length) throw new Error(\"nessuna traccia\");\n return { vd: data.videoDetails || {}, tracks };\n}\n\nasync function invCaptions(inst: string, v: string) {\n const cr = await withTimeout(\n fetch(inst + \"/api/v1/captions/\" + v, { headers: UA }),\n 8000,\n );\n if (!cr.ok) throw new Error(\"HTTP \" + cr.status);\n const caps = (await cr.json()).captions || [];\n if (!caps.length) throw new Error(\"0 tracce\");\n return caps;\n}\n\nasync function invVTT(inst: string, v: string, cap: any) {\n for (\n const path of [\n cap.url,\n \"/api/v1/captions/\" + v + \"?lang=\" +\n (cap.language_code || cap.languageCode),\n ]\n ) {\n if (!path) continue;\n try {\n const vr = await withTimeout(fetch(inst + path, { headers: UA }), 8000);\n if (!vr.ok) continue;\n const segs = parseVTT(await vr.text());\n if (segs.length) return segs;\n } catch { /* prossimo tentativo */ }\n }\n throw new Error(\"VTT vuoto\");\n}\n\nasync function pipedStreams(inst: string, v: string) {\n const sr = await withTimeout(\n fetch(inst + \"/streams/\" + v, { headers: UA }),\n 8000,\n );\n if (!sr.ok) throw new Error(\"HTTP \" + sr.status);\n const data = await sr.json();\n if (!(data.subtitles || []).length) throw new Error(\"0 tracce\");\n return data;\n}\n\n// ════ IL SERVIZIO ═══════════════════════════════════════════════\n\nexport default async function (req: Request): Promise {\n const cors = {\n \"Access-Control-Allow-Origin\": \"*\",\n \"Content-Type\": \"application/json; 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