64 lines
2.0 KiB
TypeScript
64 lines
2.0 KiB
TypeScript
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import { NextRequest } from "next/server";
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import { prisma } from "@/lib/db";
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import { storage } from "@/lib/storage";
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export const dynamic = "force-dynamic";
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/**
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* Stream an episode's MP3 to anonymous visitors, authorized purely by a valid,
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* still-enabled public `shareId` (NOT a session). Returns 404 when the share is
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* disabled or the audio is missing so we never disclose private episode state.
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*
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* Supports HTTP Range requests so the audio element can seek/scrub.
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*/
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export async function GET(
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req: NextRequest,
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{ params }: { params: Promise<{ shareId: string }> }
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) {
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const { shareId } = await params;
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const episode = await prisma.episode.findUnique({
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where: { shareId },
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select: { audioAsset: { select: { storageKey: true } } },
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});
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const key = episode?.audioAsset?.storageKey;
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if (!key) return new Response("Not found", { status: 404 });
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if (!(await storage().exists(key))) return new Response("Not found", { status: 404 });
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const data = await storage().get(key);
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const total = data.byteLength;
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const contentType = "audio/mpeg";
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const range = req.headers.get("range");
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if (range) {
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const match = /bytes=(\d+)-(\d*)/.exec(range);
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if (match) {
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const start = Number(match[1]);
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const end = match[2] ? Math.min(Number(match[2]), total - 1) : total - 1;
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if (start <= end && start < total) {
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const chunk = data.subarray(start, end + 1);
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return new Response(chunk as BodyInit, {
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status: 206,
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headers: {
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"Content-Type": contentType,
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"Content-Length": String(chunk.byteLength),
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"Content-Range": `bytes ${start}-${end}/${total}`,
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"Accept-Ranges": "bytes",
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"Cache-Control": "public, max-age=3600",
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},
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});
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}
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}
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}
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return new Response(data as BodyInit, {
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headers: {
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"Content-Type": contentType,
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"Content-Length": String(total),
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"Accept-Ranges": "bytes",
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"Cache-Control": "public, max-age=3600",
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},
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});
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}
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