Ionosphere.tv
feat: ATScience boundary detection — 22 talks with precise offsets
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apps/ionosphere-appview/src/detect-boundaries-v6.ts
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apps/ionosphere-appview/src/detect-boundaries-v6.ts
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// Get talks from DB
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const db = openDb();
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const roomMap: Record<string, { rooms: string[]; dates: string[] }> = {
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"ATScience": { rooms: ["Performance Theatre", "Bukhman Lounge"], dates: ["2026-03-27"] },
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"ATScience": { rooms: [], dates: ["2026-03-27"], rkeyPrefix: "ats26-" },
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"Great Hall South": { rooms: ["Great Hall South"], dates: [] },
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"Room 2301": { rooms: ["Room 2301", "2301 Classroom"], dates: [] },
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"Performance Theatre": { rooms: ["Performance Theatre"], dates: [] },
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};
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const room = transcript.room || "Great Hall South";
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// Resolve room from transcript metadata — check stream name for ATScience
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let room = transcript.room || "Great Hall South";
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if (!transcript.room && transcript.stream?.includes("ATScience")) room = "ATScience";
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const config = roomMap[room] || { rooms: [room], dates: [] };
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if (config.dates.length === 0) {
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const dayMap: Record<number, string> = { 1: "2026-03-28", 2: "2026-03-29" };
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if (dayMap[transcript.day]) config.dates = [dayMap[transcript.day]];
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}
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const rp = config.rooms.map(() => "?").join(",");
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const dp = config.dates.map(() => "?").join(",");
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const dateFilter = config.dates.length > 0 ? `AND substr(datetime(t.starts_at, '-7 hours'), 1, 10) IN (${dp})` : "";
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let talks: Talk[];
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if ((config as any).rkeyPrefix) {
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// ATScience: match by rkey prefix
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talks = db.prepare(
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`SELECT t.rkey, t.title, t.starts_at, t.ends_at,
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GROUP_CONCAT(s.name) as speaker_names
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FROM talks t
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LEFT JOIN talk_speakers ts ON t.uri = ts.talk_uri
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LEFT JOIN speakers s ON ts.speaker_uri = s.uri
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WHERE t.rkey LIKE ?
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GROUP BY t.rkey
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ORDER BY t.starts_at ASC`
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).all(`${(config as any).rkeyPrefix}%`).map((t: any) => ({
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...t,
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scheduledDuration: Math.max(300, (new Date(t.ends_at).getTime() - new Date(t.starts_at).getTime()) / 1000),
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})) as Talk[];
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} else {
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const rp = config.rooms.map(() => "?").join(",");
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const dp = config.dates.map(() => "?").join(",");
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const dateFilter = config.dates.length > 0 ? `AND substr(datetime(t.starts_at, '-7 hours'), 1, 10) IN (${dp})` : "";
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const talks = db.prepare(
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`SELECT t.rkey, t.title, t.starts_at, t.ends_at,
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GROUP_CONCAT(s.name) as speaker_names
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FROM talks t
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LEFT JOIN talk_speakers ts ON t.uri = ts.talk_uri
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LEFT JOIN speakers s ON ts.speaker_uri = s.uri
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WHERE t.room IN (${rp}) ${dateFilter}
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GROUP BY t.uri
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ORDER BY t.starts_at ASC`,
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).all(...config.rooms, ...config.dates).map((t: any) => ({
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...t,
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scheduledDuration: Math.max(300, (new Date(t.ends_at).getTime() - new Date(t.starts_at).getTime()) / 1000),
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})) as Talk[];
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talks = db.prepare(
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`SELECT t.rkey, t.title, t.starts_at, t.ends_at,
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GROUP_CONCAT(s.name) as speaker_names
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FROM talks t
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LEFT JOIN talk_speakers ts ON t.uri = ts.talk_uri
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LEFT JOIN speakers s ON ts.speaker_uri = s.uri
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WHERE t.room IN (${rp}) ${dateFilter}
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GROUP BY t.rkey
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ORDER BY t.starts_at ASC`,
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).all(...config.rooms, ...config.dates).map((t: any) => ({
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...t,
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scheduledDuration: Math.max(300, (new Date(t.ends_at).getTime() - new Date(t.starts_at).getTime()) / 1000),
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})) as Talk[];
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}
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console.log(`Talks (${talks.length}):`);
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for (const t of talks) {
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// Pass 3: DP
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console.log(`\n=== Pass 3: Selecting ${talks.length - 1} transitions ===\n`);
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const firstStart = findFirstTalkStart(gaps, talks, words, segments);
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console.log(` First talk starts at: ${fmt(firstStart)}`);
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// Allow ground truth override for first talk start via --first-start <seconds>
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const firstStartArg = process.argv.indexOf("--first-start");
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const firstStart = firstStartArg >= 0
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? parseFloat(process.argv[firstStartArg + 1])
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: findFirstTalkStart(gaps, talks, words, segments);
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console.log(` First talk starts at: ${fmt(firstStart)}${firstStartArg >= 0 ? " (ground truth)" : ""}`);
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const dpResult = selectTransitionsDP(gaps, talks, firstStart);
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apps/ionosphere-appview/src/tracks.ts
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apps/ionosphere-appview/src/tracks.ts
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"Sunday": "2026-03-29",
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};
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// Which schedule rooms map to which stream
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const STREAM_ROOMS: Record<string, string[]> = {
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"great-hall-day-1": ["Great Hall South"],
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"great-hall-day-2": ["Great Hall South"],
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"room-2301-day-1": ["Room 2301"],
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"room-2301-day-2": ["Room 2301"],
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"performance-theatre-day-1": ["Performance Theatre"],
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"performance-theatre-day-2": ["Performance Theatre"],
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// ATScience was Friday — talks were in various rooms
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"atscience": ["Performance Theatre", "2301 Classroom", "2311 Classroom", "Bukhman Lounge", "Room 2301", "Great Hall South"],
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// Stream-to-talk matching: room + date, or rkey prefix for ATScience
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const STREAM_MATCH: Record<string, { rooms?: string[]; rkeyPrefix?: string }> = {
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"great-hall-day-1": { rooms: ["Great Hall South"] },
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"great-hall-day-2": { rooms: ["Great Hall South"] },
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"room-2301-day-1": { rooms: ["Room 2301"] },
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"room-2301-day-2": { rooms: ["Room 2301"] },
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"performance-theatre-day-1": { rooms: ["Performance Theatre"] },
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"performance-theatre-day-2": { rooms: ["Performance Theatre"] },
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"atscience": { rkeyPrefix: "ats26-" },
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};
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function getTalksForStream(db: Database.Database, slug: string, dayLabel: string): any[] {
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const match = STREAM_MATCH[slug];
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if (!match) return [];
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// ATScience: match by rkey prefix (spans multiple rooms on Friday)
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if (match.rkeyPrefix) {
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return db.prepare(
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`SELECT t.rkey, t.title, t.starts_at, t.ends_at, t.duration,
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GROUP_CONCAT(s.name) as speaker_names
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FROM talks t
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LEFT JOIN talk_speakers ts ON t.uri = ts.talk_uri
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LEFT JOIN speakers s ON ts.speaker_uri = s.uri
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WHERE t.rkey LIKE ?
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GROUP BY t.rkey
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ORDER BY t.starts_at ASC`
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).all(`${match.rkeyPrefix}%`) as any[];
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}
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// Other streams: match by room + date
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const date = DAY_DATES[dayLabel];
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const rooms = STREAM_ROOMS[slug];
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if (!date || !rooms?.length) return [];
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if (!date || !match.rooms?.length) return [];
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const placeholders = rooms.map(() => "?").join(",");
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const placeholders = match.rooms.map(() => "?").join(",");
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return db.prepare(
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`SELECT t.rkey, t.title, t.starts_at, t.ends_at, t.duration,
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GROUP_CONCAT(s.name) as speaker_names
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LEFT JOIN talk_speakers ts ON t.uri = ts.talk_uri
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LEFT JOIN speakers s ON ts.speaker_uri = s.uri
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WHERE t.room IN (${placeholders}) AND t.starts_at LIKE ?
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GROUP BY t.uri
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GROUP BY t.rkey
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ORDER BY t.starts_at ASC`
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).all(...rooms, `${date}%`) as any[];
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).all(...match.rooms, `${date}%`) as any[];
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}
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// --- Public API ---