feat: add extensive test suite

app/api/live/route.ts

@@ -1,99 +1,21 @@
 import type { NextRequest } from "next/server";
-import { NextResponse } from "next/server";
-import { sse } from "@/lib/db/sse-endpoints";
 import { youtubeCache } from "@/lib/adaptive-cache";
+import { sse } from "@/lib/db/sse-endpoints";
+import { createLiveHandler } from "./handler";
 
-export type YoutubeLiveInfo =
-  | {
-      url: string;
-      thumbnails: {
-        url: string;
-        width: number;
-        height: number;
-      };
-      title: string;
-    }
-  | "none";
+export type { YoutubeLiveInfo } from "./handler";
 
-type APISearchResource = {
-  kind: "youtube#searchResult";
-  etag: string;
-  id: {
-    kind: string;
-    videoId: string;
-    channelId: string;
-    playlistId: string;
-  };
-  snippet: {
-    publishedAt: string;
-    channelId: string;
-    title: string;
-    description: string;
-    thumbnails: {
-      [key: string]: {
-        url: string;
-        width: number;
-        height: number;
-      };
-    };
-    channelTitle: string;
-    liveBroadcastContent: string;
-  };
-};
+const handler = createLiveHandler({
+  fetch: youtubeCache.fetch.bind(youtubeCache) as typeof fetch,
+  publish: (live) => sse.active.pub("live", live),
+  getConfig: () => ({
+    apiKey: process.env.YOUTUBE_API_KEY,
+    channelId: process.env.YOUTUBE_CHANNEL_ID,
+  }),
+});
 
-type APISearchResponse = {
-  kind: "youtube#searchListResponse";
-  etag: string;
-  nextPageToken: string;
-  prevPageToken: string;
-  regionCode: string;
-  pageInfo: {
-    totalResults: number;
-    resultsPerPage: number;
-  };
-  items: APISearchResource[];
-};
-
-var lastResponse: Response;
-
-export async function GET(req: NextRequest) {
-  if (req.nextUrl.searchParams.has("last") && lastResponse)
-    return lastResponse.clone();
-
-  const channelId = process.env.YOUTUBE_CHANNEL_ID;
-  const apiKey = process.env.YOUTUBE_API_KEY;
-
-  if (!apiKey || !channelId) return NextResponse.json<YoutubeLiveInfo>("none");
-
-  const response = await youtubeCache.fetch(
-    `https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=${channelId}&eventType=live&type=video&maxResults=1&key=${apiKey}`,
-    {
-      cache: "no-store",
-    },
-  );
-
-  if (!response.ok) {
-    console.error(`YouTube API error: ${response.statusText}`);
-    return NextResponse.json("none");
-  }
-
-  const data: APISearchResponse = await response.json();
-
-  if (data.items.length === 0)
-    return NextResponse.json<YoutubeLiveInfo>("none");
-
-  const live = data.items[0];
-
-  const res: YoutubeLiveInfo = {
-    url: `https://www.youtube.com/watch?v=${live.id.videoId}`,
-    thumbnails:
-      live.snippet.thumbnails[Object.keys(live.snippet.thumbnails)[0]],
-    title: live.snippet.title,
-  };
-
-  sse.active.pub("live", res);
-
-  return (lastResponse = NextResponse.json<YoutubeLiveInfo>(res));
+export function GET(req: NextRequest) {
+  return handler(req);
 }
 
 export const POST = GET;