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Best-effort; never throws.\n */\nexport async function archiveMusic(url: string): Promise> {\n const record: Record = {\n kind: \"music\",\n originalUrl: url,\n archived_at: new Date().toISOString(),\n };\n\n const host = hostOf(url);\n let u: URL | null = null;\n try {\n u = new URL(url);\n } catch {\n return record;\n }\n record.host = host;\n record.url = url;\n\n // --- Metadata databases ---\n if (/(^|\\.)musicbrainz\\./.test(host)) return archiveMusicBrainz(record, u);\n if (/(^|\\.)listenbrainz\\./.test(host)) return archiveListenBrainz(record, u);\n if (host.endsWith(\".last.fm\")) return archiveLastFm(record, u);\n\n // --- Streaming providers ---\n let provider: string | null = null;\n if (/(^|\\.)spotify\\./.test(host)) provider = \"spotify\";\n else if (/(^|\\.)soundcloud\\./.test(host)) provider = \"soundcloud\";\n else if (/(^|\\.)bandcamp\\./.test(host)) provider = \"bandcamp\";\n else if (/(^|\\.)deezer\\./.test(host)) provider = \"deezer\";\n else if (host === \"music.youtube.com\") provider = \"youtube-music\";\n\n if (provider && OEMBED[provider]) {\n const d = await fetchOembed(OEMBED[provider](u));\n if (d) {\n record.title = d.title ?? null;\n record.author = d.author_name ?? null;\n record.author_url = d.author_url ?? null;\n record.thumbnail = d.thumbnail_url ?? null;\n record.provider_name = d.provider_name ?? null;\n record.embed_html = d.html ?? null;\n }\n }\n\n if (provider === \"spotify\") {\n const m = url.match(\n /spotify\\.com\\/(track|album|playlist|artist|episode|show)\\/([A-Za-z0-9]+)/,\n );\n if (m) {\n record.spotify_type = m[1];\n record.spotify_id = m[2];\n record.spotify_uri = `spotify:${m[1]}:${m[2]}`;\n record.embed_url = `https://open.spotify.com/embed/${m[1]}/${m[2]}`;\n }\n } else if (provider === \"youtube-music\") {\n const id = youtubeId(url);\n if (id) {\n record.video_id = id;\n record.thumbnail = record.thumbnail ??\n `https://img.youtube.com/vi/${id}/hqdefault.jpg`;\n record.embed_url = `https://music.youtube.com/watch?v=${id}`;\n }\n } else if (provider === \"deezer\") {\n const m = url.match(\n /deezer\\.com\\/(?:[a-z]{2}\\/)?(track|album|playlist|artist|show|episode)\\/(\\d+)/,\n );\n if (m) {\n record.deezer_type = m[1];\n record.deezer_id = m[2];\n }\n } else if (provider === \"soundcloud\") {\n const m = url.match(/soundcloud\\.com\\/([^/?#]+)\\/([^/?#]+)/);\n if (m) {\n record.soundcloud_user = m[1];\n record.soundcloud_track = m[2];\n }\n } else if (provider === \"bandcamp\") {\n const m = url.match(/bandcamp\\.com\\/track\\/([^/?#]+)\\/?$/);\n if (m) record.bandcamp_slug = m[1];\n }\n\n return record;\n}\n\n// ---------------------------------------------------------------------------\n// MusicBrainz (public ws/2 API, no key, requires a polite User-Agent)\n// ---------------------------------------------------------------------------\nconst MB_ENTITIES = new Set([\n \"artist\", \"release-group\", \"release\", \"recording\", \"work\",\n \"label\", \"event\", \"place\", \"series\", \"area\", \"url\",\n]);\n\nasync function archiveMusicBrainz(\n record: Record,\n u: URL,\n): Promise> {\n const m = u.pathname.match(\n /\\/(artist|release-group|release|recording|work|label|event|place|series|area|url)\\/([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})/,\n );\n if (!m || !MB_ENTITIES.has(m[1])) {\n return fromPageMeta(record, u.href);\n }\n record.musicbrainz_entity = m[1];\n record.musicbrainz_id = m[2];\n record.url = `https://musicbrainz.org/${m[1]}/${m[2]}`;\n\n const inc = m[1] === \"release\"\n ? \"release-groups+recordings+artist-credits\"\n : m[1] === \"recording\" ? \"artist-credits+releases\" : undefined;\n const qs = inc ? `?inc=${inc}&fmt=json` : \"?fmt=json\";\n try {\n const r = await fetch(`https://musicbrainz.org/ws/2/${m[1]}/${m[2]}${qs}`, {\n headers: { \"user-agent\": USER_AGENT, accept: \"application/json\" },\n });\n if (!r.ok) return fromPageMeta(record, u.href);\n const d = (await r.json()) as Record;\n\n record.title = d.title ?? d.name ?? null;\n record.musicbrainz_type = d.type ?? null;\n if (m[1] === \"release-group\") record.musicbrainz_primary_type = d[\"primary-type\"] ?? null;\n record.disambiguation = d.disambiguation ?? null;\n\n if (d.artist) {\n const artist = d.artist as Record;\n record.author = artist.sort_name ?? artist.name ?? null;\n record.author_mbid = artist.id ?? null;\n }\n if (d[\"artist-credit\"]) {\n record.artist_credit = (d[\"artist-credit\"] as Array>)\n .map((a) => String(a.name ?? \"\")).join(\" / \");\n }\n if (d.country) record.country = d.country;\n if (d.area) record.area = (d.area as Record)?.name ?? null;\n if (d.date) record.release_date = d.date;\n if (d[\"first-release-date\"]) record.first_release_date = d[\"first-release-date\"];\n if (Array.isArray(d[\"release-events\"]) && d[\"release-events\"][0]) {\n const ev = d[\"release-events\"][0] as Record;\n if (ev.date) record.release_date = ev.date;\n }\n if (d[\"release-group\"]) {\n const rg = d[\"release-group\"] as Record;\n record.release_group = rg.title ?? null;\n record.musicbrainz_primary_type = rg[\"primary-type\"] ?? null;\n }\n // Rating/metadata stats where present\n if (d.rating) record.musicbrainz_rating = d.rating;\n if (d.score != null) record.musicbrainz_score = d.score;\n if (m[1] === \"release\" && d.media) {\n record.release_format = (d.media as Array>)[0]?.format ?? null;\n record.track_count = (d.media as Array>)[0]?.track_count ?? null;\n }\n if (m[1] === \"recording\" && typeof d.length === \"number\") {\n record.duration_ms = d.length;\n }\n } catch {\n return fromPageMeta(record, u.href);\n }\n return record;\n}\n\n// ---------------------------------------------------------------------------\n// ListenBrainz (public API; enrich via page meta / MBID when linkable)\n// ---------------------------------------------------------------------------\nasync function archiveListenBrainz(\n record: Record,\n u: URL,\n): Promise> {\n // ListenBrainz artist/release/track pages often embed a MusicBrainz ID.\n const mb = u.pathname.match(/([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})/);\n if (mb) record.musicbrainz_id = mb[1];\n return fromPageMeta(record, u.href);\n}\n\n// ---------------------------------------------------------------------------\n// Last.fm (page meta; optional API enrichment when LASTFM_API_KEY is set)\n// ---------------------------------------------------------------------------\nasync function archiveLastFm(\n record: Record,\n u: URL,\n): Promise> {\n const seg = u.pathname.split(\"/\").filter(Boolean);\n if (seg[0] === \"music\" && seg.length >= 2) {\n record.artist = decodeURIComponent(seg[1]);\n if (seg.length >= 4) {\n record.lastfm_type = \"track\";\n record.track = decodeURIComponent(seg[3]);\n } else if (seg.length === 3) {\n record.lastfm_type = \"album\";\n record.album = decodeURIComponent(seg[2]);\n } else {\n record.lastfm_type = \"artist\";\n }\n }\n\n const key = Deno.env.get(\"LASTFM_API_KEY\");\n if (key && record.artist) {\n const p = new URLSearchParams({ api_key: key, format: \"json\", artist: String(record.artist) });\n let method = \"artist.getInfo\";\n if (record.lastfm_type === \"album\") { method = \"album.getInfo\"; p.set(\"album\", String(record.album)); }\n if (record.lastfm_type === \"track\") { method = \"track.getInfo\"; p.set(\"track\", String(record.track)); }\n try {\n const r = await fetch(`https://ws.audioscrobbler.com/2.0/?method=${method}&${p.toString()}`, {\n headers: { \"user-agent\": USER_AGENT },\n });\n if (r.ok) {\n const d = await r.json();\n const info = d?.artist ?? 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