feat(youtube): indirme ayarları ve müzik tespiti ekle

YouTube indirmeleri için çözünürlük ve ses-only seçenekleri içeren
ayarlar sistemi eklendi. Kullanıcılar artık tercih ettikleri video
kalitesini (1080p, 720p, 480p, 360p, 240p, 144p) ve ses-only
indirme seçeneğini kaydedebilir. Müzik içeriklerini daha iyi tespit
etmek için yeni algoritma ve API endpoint'leri eklendi.

server/server.js

@@ -76,6 +76,16 @@ const YT_COOKIES_PATH =
   process.env.YT_DLP_COOKIES ||
   process.env.YT_DLP_COOKIE_FILE ||
   path.join(CACHE_DIR, "yt_cookies.txt");
+const YT_SETTINGS_PATH = path.join(CACHE_DIR, "yt_settings.json");
+const YT_DEFAULT_RESOLUTION = "1080p";
+const YT_ALLOWED_RESOLUTIONS = new Set([
+  "1080p",
+  "720p",
+  "480p",
+  "360p",
+  "240p",
+  "144p"
+]);
 const YT_EXTRACTOR_ARGS =
   process.env.YT_DLP_EXTRACTOR_ARGS || null;
 let resolvedYtDlpBinary = null;
@@ -625,8 +635,10 @@ function determineMediaType({
   movieMatch,
   seriesEpisode,
   categories,
-  relPath
+  relPath,
+  audioOnly = false
 }) {
+  if (audioOnly) return "music";
   if (seriesEpisode) return "tv";
   if (movieMatch) return "movie";
   if (
@@ -686,6 +698,7 @@ function normalizeYoutubeWatchUrl(value) {
 function startYoutubeDownload(url) {
   const normalized = normalizeYoutubeWatchUrl(url);
   if (!normalized) return null;
+  const ytSettings = loadYoutubeSettings();
   const videoId = new URL(normalized).searchParams.get("v");
   const folderId = `yt_${videoId}_${Date.now().toString(36)}`;
   const savePath = path.join(DOWNLOAD_DIR, folderId);
@@ -716,6 +729,8 @@ function startYoutubeDownload(url) {
     error: null,
     debug: { binary: null, args: null, logs: [] }
   };
+  job.resolution = ytSettings.resolution;
+  job.onlyAudio = ytSettings.onlyAudio;
 
   youtubeJobs.set(job.id, job);
   launchYoutubeJob(job);
@@ -738,9 +753,49 @@ function appendYoutubeLog(job, line) {
   job.debug.logs = lines;
 }
 
+function loadYoutubeSettings() {
+  const defaults = {
+    resolution: YT_DEFAULT_RESOLUTION,
+    onlyAudio: false
+  };
+
+  try {
+    if (!fs.existsSync(YT_SETTINGS_PATH)) return defaults;
+    const raw = fs.readFileSync(YT_SETTINGS_PATH, "utf-8");
+    const parsed = JSON.parse(raw);
+    const resolution = YT_ALLOWED_RESOLUTIONS.has(parsed?.resolution)
+      ? parsed.resolution
+      : YT_DEFAULT_RESOLUTION;
+    const onlyAudio = Boolean(parsed?.onlyAudio);
+    return { resolution, onlyAudio };
+  } catch (err) {
+    console.warn("⚠️ YouTube ayarları okunamadı, varsayılan kullanılacak:", err.message);
+    return defaults;
+  }
+}
+
+function saveYoutubeSettings({ resolution, onlyAudio }) {
+  const resValue = YT_ALLOWED_RESOLUTIONS.has(resolution)
+    ? resolution
+    : YT_DEFAULT_RESOLUTION;
+  const settings = { resolution: resValue, onlyAudio: Boolean(onlyAudio) };
+  ensureDirForFile(YT_SETTINGS_PATH);
+  fs.writeFileSync(YT_SETTINGS_PATH, JSON.stringify(settings, null, 2), "utf-8");
+  return settings;
+}
+
+function buildYoutubeFormat({ resolution, onlyAudio }) {
+  if (onlyAudio) return "bestaudio/b";
+  const match = String(resolution || YT_DEFAULT_RESOLUTION).match(/(\\d+)/);
+  const height = match ? Number(match[1]) : 1080;
+  const safeHeight = Number.isFinite(height) && height > 0 ? height : 1080;
+  return `bestvideo[height<=${safeHeight}]+bestaudio/best[height<=${safeHeight}]`;
+}
+
 function launchYoutubeJob(job) {
   const binary = getYtDlpBinary();
   const jsRuntimeArg = process.env.YT_DLP_JS_RUNTIME || "node";
+  const ytSettings = loadYoutubeSettings();
 
   const cookieFile =
     (YT_COOKIES_PATH && fs.existsSync(YT_COOKIES_PATH) && YT_COOKIES_PATH) ||
@@ -750,9 +805,11 @@ function launchYoutubeJob(job) {
     YT_EXTRACTOR_ARGS ||
     (cookieFile ? "youtube:player-client=web" : "youtube:player-client=android");
 
+  const formatSelector = buildYoutubeFormat(ytSettings);
+
   const args = [
     "-f",
-    "bv+ba/b",
+    formatSelector,
     "--write-thumbnail",
     "--convert-thumbnails",
     "jpg",
@@ -772,7 +829,10 @@ function launchYoutubeJob(job) {
     logs: [],
     jsRuntime: jsRuntimeArg,
     cookies: cookieFile,
-    extractorArgs: extractorArgValue
+    extractorArgs: extractorArgValue,
+    resolution: ytSettings.resolution,
+    onlyAudio: ytSettings.onlyAudio,
+    format: formatSelector
   };
   const child = spawn(binary, args, {
     cwd: job.savePath,
@@ -1015,6 +1075,23 @@ function deriveYoutubeTitle(fileName, videoId) {
   return cleaned.replace(/[-_.]+$/g, "").trim() || base;
 }
 
+function isYoutubeMusic(infoJson, mediaInfo, audioOnlyFlag = false) {
+  if (audioOnlyFlag) return true;
+  const categories = Array.isArray(infoJson?.categories)
+    ? infoJson.categories.map((c) => String(c).toLowerCase())
+    : [];
+  if (categories.includes("music")) return true;
+
+  const tags = Array.isArray(infoJson?.tags)
+    ? infoJson.tags.map((t) => String(t).toLowerCase())
+    : [];
+  if (tags.some((t) => t.includes("music"))) return true;
+
+  // Sadece ses akışı varsa müzik kabul et
+  if (!mediaInfo?.video && mediaInfo?.audio) return true;
+  return false;
+}
+
 async function writeYoutubeMetadata(job, videoPath, mediaInfo, infoJsonFile) {
   const targetDir = path.join(YT_DATA_ROOT, job.folderId);
   fs.mkdirSync(targetDir, { recursive: true });
@@ -1031,12 +1108,14 @@ async function writeYoutubeMetadata(job, videoPath, mediaInfo, infoJsonFile) {
   const categories = Array.isArray(infoJson?.categories)
     ? infoJson.categories
     : null;
+  const isAudioOnly = isYoutubeMusic(infoJson, mediaInfo, Boolean(job.onlyAudio));
   const derivedType = determineMediaType({
     tracker: "youtube",
     movieMatch: null,
     seriesEpisode: null,
     categories,
-    relPath: job.files?.[0]?.name || null
+    relPath: job.files?.[0]?.name || null,
+    audioOnly: isAudioOnly
   });
   const payload = {
     id: job.id,
@@ -4291,7 +4370,8 @@ async function onTorrentDone({ torrent }) {
         movieMatch: null,
         seriesEpisode: null,
         categories: null,
-        relPath: normalizedRelPath
+        relPath: normalizedRelPath,
+        audioOnly: false
       })
     };
 
@@ -4346,7 +4426,8 @@ async function onTorrentDone({ torrent }) {
             movieMatch: null,
             seriesEpisode: seriesEpisodes[normalizedRelPath],
             categories: null,
-            relPath: normalizedRelPath
+            relPath: normalizedRelPath,
+            audioOnly: false
           });
         }
       } catch (err) {
@@ -4419,7 +4500,8 @@ async function onTorrentDone({ torrent }) {
       movieMatch: ensuredMedia.metadata,
       seriesEpisode: seriesEpisodes[bestVideoPath] || null,
       categories: null,
-      relPath: bestVideoPath
+      relPath: bestVideoPath,
+      audioOnly: false
     });
     perFileMetadata[bestVideoPath] = {
       ...(perFileMetadata[bestVideoPath] || {}),
@@ -4454,7 +4536,8 @@ async function onTorrentDone({ torrent }) {
       movieMatch: infoUpdate.files[bestVideoPath].movieMatch || null,
       seriesEpisode: seriesEpisodes[bestVideoPath] || null,
       categories: null,
-      relPath: bestVideoPath
+      relPath: bestVideoPath,
+      audioOnly: false
     });
     infoUpdate.type = rootType;
     infoUpdate.files[bestVideoPath].type =
@@ -5920,6 +6003,41 @@ app.post("/api/youtube/cookies", requireAuth, (req, res) => {
   }
 });
 
+// --- 🎚️ YouTube kalite ayarları ---
+app.get("/api/youtube/settings", requireAuth, (req, res) => {
+  try {
+    const settings = loadYoutubeSettings();
+    let updatedAt = null;
+    if (fs.existsSync(YT_SETTINGS_PATH)) {
+      updatedAt = fs.statSync(YT_SETTINGS_PATH).mtimeMs;
+    }
+    res.json({ ok: true, ...settings, updatedAt });
+  } catch (err) {
+    console.warn("⚠️ YouTube ayarları okunamadı:", err.message);
+    res.status(500).json({ error: "Ayarlar okunamadı." });
+  }
+});
+
+app.post("/api/youtube/settings", requireAuth, (req, res) => {
+  try {
+    const { resolution, onlyAudio } = req.body || {};
+    if (resolution && !YT_ALLOWED_RESOLUTIONS.has(resolution)) {
+      return res.status(400).json({ error: "Geçersiz çözünürlük." });
+    }
+    const saved = saveYoutubeSettings({
+      resolution: resolution || YT_DEFAULT_RESOLUTION,
+      onlyAudio: Boolean(onlyAudio)
+    });
+    const stat = fs.existsSync(YT_SETTINGS_PATH)
+      ? fs.statSync(YT_SETTINGS_PATH).mtimeMs
+      : Date.now();
+    res.json({ ok: true, ...saved, updatedAt: stat });
+  } catch (err) {
+    console.error("❌ YouTube ayarları kaydedilemedi:", err.message);
+    res.status(500).json({ error: "Ayarlar kaydedilemedi." });
+  }
+});
+
 // --- 🎫 YouTube cookies yönetimi ---
 app.get("/api/youtube/cookies", requireAuth, (req, res) => {
   try {