admin
84 lines
2.9 KiB
TypeScript
84 lines
2.9 KiB
TypeScript
import { NextRequest } from "next/server";
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import fsp from "node:fs/promises";
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import { findVideosForCode, getVideoIndex, rescanVideoIndex } from "@/lib/video";
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import { getAppSetting } from "@/lib/db/appSettings";
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import { probeDuration } from "@/lib/video/duration";
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import { assertLocalRequest } from "@/lib/api/localOnly";
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export const runtime = "nodejs";
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export const dynamic = "force-dynamic";
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/**
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* HLS playlist generator. Returns an m3u8 with N segment URLs covering
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* the full video duration. Segments are produced on demand by the
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* sibling /segment endpoint (each one is a fresh NVENC transcode of a
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* fixed time window). Player (hls.js) requests segments as needed for
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* playback and seeking.
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*/
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const SEGMENT_SECONDS = 6;
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export async function GET(req: NextRequest, ctx: { params: Promise<{ code: string }> }) {
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const blocked = assertLocalRequest(req);
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if (blocked) return blocked;
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const { code } = await ctx.params;
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const decoded = decodeURIComponent(code);
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const url = new URL(req.url);
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const partRaw = url.searchParams.get("part");
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const part = partRaw == null ? 0 : Math.max(0, parseInt(partRaw, 10) || 0);
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let files = findVideosForCode(decoded);
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if (files.length === 0) {
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const main = (getAppSetting("videoLibraryPath") || "").trim();
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const extras = getAppSetting("videoExtraPaths") ?? [];
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const expected = [main, ...extras].filter(Boolean);
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const idx = getVideoIndex();
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const haveAll = expected.length === idx.rootsScanned.length
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&& expected.every((r, i) => r === idx.rootsScanned[i]);
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if (expected.length > 0 && !haveAll) {
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await rescanVideoIndex();
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files = findVideosForCode(decoded);
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}
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}
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if (files.length === 0) return new Response("not found", { status: 404 });
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const file = files[Math.min(part, files.length - 1)];
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try {
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await fsp.stat(file.abs);
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} catch {
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return new Response("not found", { status: 404 });
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}
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const duration = await probeDuration(file.abs, req.signal);
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if (duration == null) {
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return new Response("ffprobe failed", { status: 500 });
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}
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const segCount = Math.ceil(duration / SEGMENT_SECONDS);
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const lines: string[] = [
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"#EXTM3U",
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"#EXT-X-VERSION:3",
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`#EXT-X-TARGETDURATION:${SEGMENT_SECONDS}`,
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"#EXT-X-MEDIA-SEQUENCE:0",
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"#EXT-X-PLAYLIST-TYPE:VOD",
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];
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for (let i = 0; i < segCount; i++) {
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const remaining = duration - i * SEGMENT_SECONDS;
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const segDur = Math.min(SEGMENT_SECONDS, remaining);
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lines.push(`#EXTINF:${segDur.toFixed(3)},`);
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// Relative URL — resolves against the playlist URL's directory.
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// Playlist is at /api/video-hls/[code]/playlist, so its directory is
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// /api/video-hls/[code]/ and `segment?...` resolves to the sibling.
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lines.push(`segment?part=${part}&i=${i}`);
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}
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lines.push("#EXT-X-ENDLIST");
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return new Response(lines.join("\n"), {
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status: 200,
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headers: {
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"Content-Type": "application/vnd.apple.mpegurl",
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"Cache-Control": "no-store",
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},
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});
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}
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