api: flatten code directories, better filenames, remove old files

api/src/stream/shared.js

@@ -0,0 +1,45 @@
+import { genericUserAgent } from "../config.js";
+
+const defaultHeaders = {
+    'user-agent': genericUserAgent
+}
+
+const serviceHeaders = {
+    bilibili: {
+        referer: 'https://www.bilibili.com/'
+    },
+    youtube: {
+        accept: '*/*',
+        origin: 'https://www.youtube.com',
+        referer: 'https://www.youtube.com',
+        DNT: '?1'
+    }
+}
+
+export function closeRequest(controller) {
+    try { controller.abort() } catch {}
+}
+
+export function closeResponse(res) {
+    if (!res.headersSent) {
+        res.sendStatus(500);
+    }
+
+    return res.end();
+}
+
+export function getHeaders(service) {
+    // Converting all header values to strings
+    return Object.entries({ ...defaultHeaders, ...serviceHeaders[service] })
+        .reduce((p, [key, val]) => ({ ...p, [key]: String(val) }), {})
+}
+
+export function pipe(from, to, done) {
+    from.on('error', done)
+        .on('close', done);
+
+    to.on('error', done)
+      .on('close', done);
+
+    from.pipe(to);
+}