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

api/src/processing/services/rutube.js

@@ -0,0 +1,80 @@
+import HLS from 'hls-parser';
+
+import { env } from "../../config.js";
+import { cleanString } from '../../misc/utils.js';
+
+async function requestJSON(url) {
+    try {
+        const r = await fetch(url);
+        return await r.json();
+    } catch {}
+}
+
+const delta = (a, b) => Math.abs(a - b);
+
+export default async function(obj) {
+    if (obj.yappyId) {
+        const yappy = await requestJSON(
+            `https://rutube.ru/pangolin/api/web/yappy/yappypage/?client=wdp&videoId=${obj.yappyId}&page=1&page_size=15`
+        )
+        const yappyURL = yappy?.results?.find(r => r.id === obj.yappyId)?.link;
+        if (!yappyURL) return { error: 'ErrorEmptyDownload' };
+
+        return {
+            urls: yappyURL,
+            filename: `rutube_yappy_${obj.yappyId}.mp4`,
+            audioFilename: `rutube_yappy_${obj.yappyId}_audio`
+        }
+    }
+
+    const quality = Number(obj.quality) || 9000;
+
+    const requestURL = new URL(`https://rutube.ru/api/play/options/${obj.id}/?no_404=true&referer&pver=v2`);
+    if (obj.key) requestURL.searchParams.set('p', obj.key);
+
+    const play = await requestJSON(requestURL);
+    if (!play) return { error: 'ErrorCouldntFetch' };
+
+    if (play.detail || !play.video_balancer) return { error: 'ErrorEmptyDownload' };
+    if (play.live_streams?.hls) return { error: 'ErrorLiveVideo' };
+
+    if (play.duration > env.durationLimit * 1000)
+        return { error: ['ErrorLengthLimit', env.durationLimit / 60] };
+
+    let m3u8 = await fetch(play.video_balancer.m3u8)
+                     .then(r => r.text())
+                     .catch(() => {});
+
+    if (!m3u8) return { error: 'ErrorCouldntFetch' };
+
+    m3u8 = HLS.parse(m3u8).variants;
+
+    const matchingQuality = m3u8.reduce((prev, next) => {
+        const diff = {
+            prev: delta(quality, prev.resolution.height),
+            next: delta(quality, next.resolution.height)
+        };
+
+        return diff.prev < diff.next ? prev : next;
+    });
+
+    const fileMetadata = {
+        title: cleanString(play.title.trim()),
+        artist: cleanString(play.author.name.trim()),
+    }
+
+    return {
+        urls: matchingQuality.uri,
+        isM3U8: true,
+        filenameAttributes: {
+            service: "rutube",
+            id: obj.id,
+            title: fileMetadata.title,
+            author: fileMetadata.artist,
+            resolution: `${matchingQuality.resolution.width}x${matchingQuality.resolution.height}`,
+            qualityLabel: `${matchingQuality.resolution.height}p`,
+            extension: "mp4"
+        },
+        fileMetadata: fileMetadata
+    }
+}