tools: MUSICTOOLS_SSH env override per gen-license.sh

Server musictools.djluza.com può essere irraggiungibile via internet
mentre la LAN sì. Nuovo override:
  MUSICTOOLS_SSH="musictools@192.168.30.250" ./gen-license.sh ...
Senza override continua a usare il dominio pubblico come default.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

api/bridge.py

@@ -49,6 +49,8 @@ from core.upgrader import (
 from core import dedup
 from core import catalog
 from core import flatten
+from core import charts
+from core import royalty_check as royalty
 
 
 SPOTIFY_GUIDE_TEXT = """\
@@ -117,6 +119,7 @@ class Api:
         self._dedup_thread: Optional[threading.Thread] = None
         self._catalog_thread: Optional[threading.Thread] = None
         self._flatten_thread: Optional[threading.Thread] = None
+        self._royalty_thread: Optional[threading.Thread] = None
         # Coda usata dal resolve_callback per attendere la scelta utente
         # sul modal "match locali multipli" della tab Upgrade.
         self._upgrade_resolve_q: "queue.Queue[dict]" = queue.Queue(1)
@@ -210,6 +213,7 @@ class Api:
             "cookies_browser": (payload.get("cookies_browser") or "").strip().lower(),
             "output_dir": (payload.get("output_dir") or "").strip(),
             "theme": payload.get("theme", "dark"),
+            "jamendo_client_id": (payload.get("jamendo_client_id") or "").strip(),
         })
         save_config(config)
         return {"ok": True}
@@ -445,6 +449,21 @@ class Api:
         except Exception as e:
             return {"ok": False, "error": str(e)}
 
+    def remove_metadata_frames(self, path: str, frame_keys: list) -> dict:
+        """Rimuove i frame ID3/atomi indicati dal file. Usato dal pannello
+        'Metadati avanzati' per pulire TXXX, GEOB (C2PA), USLT extra, ecc."""
+        if not path or not os.path.exists(path):
+            return {"ok": False, "error": "File non trovato"}
+        gate = self._gate("metadata")
+        if gate:
+            return gate
+        try:
+            from core.metadata import remove_frames
+            n = remove_frames(path, frame_keys or [])
+            return {"ok": True, "removed": n}
+        except Exception as e:
+            return {"ok": False, "error": str(e)}
+
     def save_metadata(self, payload: dict) -> dict:
         path = (payload.get("path") or "").strip()
         if not path:
@@ -2263,3 +2282,235 @@ class Api:
             "n_matched": n_matched,
             "n_unmatched": n_unmatched,
         })
+
+    # ================================================================
+    # CHARTS — classifiche musicali (iTunes / Spotify / M2O / Last.fm)
+    # ================================================================
+    def charts_fetch(self, payload: dict) -> dict:
+        """Ritorna le entry di una chart per la sorgente/params richiesti.
+
+        Payload:
+            {
+              source: "itunes" | "spotify" | "m2o" | "lastfm",
+              country?: "it"|"us"|"gb"|"ww",  # solo itunes
+              playlist_key?: str,             # solo spotify (chiave _SPOTIFY_CHARTS)
+              decade?: str,                   # solo lastfm ("" | "70s"|"80s"|...)
+              genre?: str,                    # solo lastfm ("" | pop|rock|dance|...)
+              force?: bool,                   # bypass cache
+            }
+        Persiste anche la scelta corrente in config.
+        """
+        payload = payload or {}
+        source = (payload.get("source") or "itunes").strip().lower()
+        force = bool(payload.get("force", False))
+
+        # Persist scelta corrente (best-effort, non blocca la fetch)
+        try:
+            cfg = load_config()
+            cfg["charts_last_source"] = source
+            if source == "itunes":
+                cfg["charts_itunes_country"] = (
+                    payload.get("country") or cfg.get("charts_itunes_country") or "it"
+                )
+            elif source == "lastfm":
+                cfg["charts_lastfm_decade"] = (
+                    payload.get("decade") if payload.get("decade") is not None
+                    else cfg.get("charts_lastfm_decade", "90s")
+                )
+                cfg["charts_lastfm_genre"] = (
+                    payload.get("genre") if payload.get("genre") is not None
+                    else cfg.get("charts_lastfm_genre", "dance")
+                )
+            elif source == "spotify":
+                cfg["charts_spotify_playlist"] = (
+                    payload.get("playlist_key")
+                    or cfg.get("charts_spotify_playlist")
+                    or "top50_global"
+                )
+            save_config(cfg)
+        except Exception:
+            pass
+
+        try:
+            if source == "itunes":
+                country = (payload.get("country") or "it").strip().lower() or "it"
+                entries = charts.fetch_itunes(country, force=force)
+            elif source == "lastfm":
+                decade = payload.get("decade") or ""
+                genre = payload.get("genre") or ""
+                entries = charts.fetch_lastfm(decade, genre, force=force)
+            elif source == "spotify":
+                playlist_key = (payload.get("playlist_key") or "top50_global").strip()
+                entries = charts.fetch_spotify(playlist_key, force=force)
+            elif source == "m2o":
+                entries = charts.fetch_m2o(force=force)
+            else:
+                return {"ok": False, "error": f"Sorgente sconosciuta: {source}"}
+        except Exception as e:
+            self._log("charts", f"[ERRORE] fetch {source}: {e}")
+            return {"ok": False, "error": str(e)}
+
+        self._log("charts", f"[INFO] {source}: {len(entries)} brani ricevuti")
+        return {"ok": True, "source": source, "entries": entries}
+
+    def charts_add_to_queue(self, entries: list) -> dict:
+        """Riceve una lista di entry `{artist, title}` selezionate dalla UI
+        e le converte in una tracklist compatibile con la tab Scarica.
+
+        Emette l'evento `charts:add_to_queue` col testo formattato
+        (`Artista - Titolo` una per riga) e la lista strutturata. La UI
+        popola l'input della tab Scarica e commuta view.
+        """
+        if not isinstance(entries, list):
+            return {"ok": False, "error": "entries deve essere una lista"}
+
+        tracks = []
+        lines = []
+        for e in entries:
+            if not isinstance(e, dict):
+                continue
+            artist = (e.get("artist") or "").strip()
+            title = (e.get("title") or "").strip()
+            if not title:
+                continue
+            tracks.append({"artist": artist, "name": title})
+            if artist:
+                lines.append(f"{artist} - {title}")
+            else:
+                lines.append(title)
+
+        if not tracks:
+            return {"ok": False, "error": "Nessun brano valido selezionato"}
+
+        text = "\n".join(lines)
+        payload = {"text": text, "count": len(tracks), "tracks": tracks}
+        self._emit("charts:add_to_queue", payload)
+        self._log("charts", f"[INFO] {len(tracks)} brani inviati alla coda Scarica")
+        return {"ok": True, "count": len(tracks)}
+
+    # ================================================================
+    # DIRITTI — verifica royalty-free status (ccMixter + Jamendo)
+    # ================================================================
+    def royalty_pick_folder(self) -> str:
+        """Folder picker per la cartella da analizzare."""
+        return self.browse_directory()
+
+    def royalty_start_scan(self, payload: dict) -> dict:
+        """Avvia worker di scansione royalty-free.
+
+        Payload: {directory, recursive}.
+        Persiste `royalty_last_folder` e `royalty_recursive` in config.
+        """
+        if self._royalty_thread and self._royalty_thread.is_alive():
+            return {"ok": False, "error": "Analisi diritti gia in corso"}
+
+        directory = (payload.get("directory") or "").strip()
+        recursive = bool(payload.get("recursive", True))
+
+        if not directory:
+            return {"ok": False, "error": "Cartella non impostata"}
+        if not os.path.isdir(directory):
+            return {"ok": False, "error": "Cartella non trovata"}
+
+        try:
+            cfg = load_config()
+            cfg["royalty_last_folder"] = directory
+            cfg["royalty_recursive"] = recursive
+            save_config(cfg)
+        except Exception:
+            pass
+
+        self._royalty_thread = threading.Thread(
+            target=self._royalty_worker,
+            args=(directory, recursive),
+            daemon=True,
+        )
+        self._royalty_thread.start()
+        return {"ok": True}
+
+    def royalty_stop_scan(self) -> dict:
+        royalty.request_stop()
+        self._log("royalty", "[INFO] Interruzione richiesta...")
+        return {"ok": True}
+
+    def _royalty_worker(self, directory: str, recursive: bool) -> None:
+        """Esegue scan royalty-free in background, emette streaming."""
+        view = "royalty"
+        royalty.reset_stop()
+        self._log(view,
+                  f"[INFO] Analisi diritti: {directory} (recursive={recursive})")
+
+        _last = [0.0]
+        _THROTTLE = 0.05
+
+        def progress_cb(idx: int, total: int, filename: str,
+                         status: str, err_msg: str = "") -> None:
+            if status == "checking":
+                now = time.monotonic()
+                if now - _last[0] < _THROTTLE and idx != total:
+                    return
+                _last[0] = now
+            payload_evt = {
+                "idx": idx, "total": total,
+                "filename": filename, "status": status,
+            }
+            if err_msg:
+                payload_evt["error_msg"] = err_msg
+            if total > 0:
+                payload_evt["overall"] = min(idx / total, 1.0)
+            if status == "completed":
+                payload_evt["overall"] = 1.0
+                self._log(view, f"[INFO] Analisi completata ({total} file).")
+            elif status == "stopped":
+                self._log(view, "[INFO] Analisi interrotta.")
+            elif status == "error" and filename:
+                detail = f": {err_msg}" if err_msg else ""
+                self._log(view, f"[ERRORE] {filename}{detail}")
+            self._emit("royalty:progress", payload_evt)
+
+        def entry_cb(entry: dict) -> None:
+            """Streaming: appena un file e' processato, emit alla UI."""
+            try:
+                self._emit("royalty:entry", entry)
+            except Exception:
+                pass
+            # Log per file: solo quando trova un match RF
+            try:
+                st = entry.get("status", "")
+                if st == "royalty_free":
+                    matches = entry.get("matches") or []
+                    src = matches[0].get("source", "?") if matches else "?"
+                    lic = matches[0].get("license", "") if matches else ""
+                    from pathlib import Path as _P
+                    name = _P(entry.get("path", "")).name
+                    self._log(view, f"[OK] {name} → {src} ({lic})")
+            except Exception:
+                pass
+
+        try:
+            entries = royalty.scan_folder(
+                directory,
+                recursive=recursive,
+                progress_callback=progress_cb,
+                entry_callback=entry_cb,
+            )
+        except Exception as e:
+            self._log(view, f"[ERRORE] {e}")
+            self._emit("royalty:done", {"ok": False, "error": str(e),
+                                         "entries": []})
+            return
+
+        n_rf = sum(1 for e in entries if e.get("status") == "royalty_free")
+        n_unk = sum(1 for e in entries if e.get("status") == "unknown")
+        n_err = sum(1 for e in entries if e.get("status") == "error")
+        self._log(view,
+                  f"[INFO] Royalty-free: {n_rf} · sconosciuti: {n_unk} · "
+                  f"errori: {n_err} (totale {len(entries)})")
+        self._emit("royalty:done", {
+            "ok": True,
+            "entries": entries,
+            "total": len(entries),
+            "royalty_free_count": n_rf,
+            "unknown_count": n_unk,
+            "error_count": n_err,
+        })

build_macos.py

@@ -39,21 +39,23 @@ def log(msg):
 # 1. Scarica yt-dlp standalone
 # =========================================================================
 def download_ytdlp():
-    """Scarica il binario standalone di yt-dlp per macOS."""
+    """Scarica il binario standalone di yt-dlp per macOS.
+
+    Usa il NIGHTLY channel invece dello stable perche' YouTube rompe le
+    API ogni 1-2 settimane e la stable resta indietro di 3-4 settimane
+    tipicamente. La nightly esce quasi ogni giorno con i fix.
+    Sempre re-download: garantisce che ogni build imbarca yt-dlp fresco.
+    """
     arch = platform.machine()  # arm64 o x86_64
     if arch == "arm64":
-        url = "https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos"
+        url = "https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/latest/download/yt-dlp_macos"
     else:
-        url = "https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos_legacy"
+        url = "https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/latest/download/yt-dlp_macos_legacy"
 
     dest = BUNDLE_DIR / "yt-dlp"
-    if dest.exists():
-        log(f"yt-dlp gia presente: {dest}")
-        return dest
-
-    log(f"Scarico yt-dlp da {url} ...")
     BUNDLE_DIR.mkdir(parents=True, exist_ok=True)
 
+    log(f"Scarico yt-dlp nightly da {url} ...")
     # Usa curl perche urllib di Python 3.8 ha problemi SSL su macOS
     subprocess.run(
         ["curl", "-L", "-o", str(dest), url],

build_windows.py

@@ -29,7 +29,7 @@ BUILD_DIR = ROOT / "build"
 DIST_DIR = ROOT / "dist"
 BUNDLE_DIR = ROOT / "bundle_bin"
 
-YTDLP_URL = "https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe"
+YTDLP_URL = "https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/latest/download/yt-dlp.exe"
 FFMPEG_URL = "https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-win64-gpl.zip"
 FPCALC_URL = ("https://github.com/acoustid/chromaprint/releases/download/"
               "v1.5.1/chromaprint-fpcalc-1.5.1-windows-x86_64.zip")
@@ -43,13 +43,11 @@ def log(msg):
 # 1. Scarica yt-dlp.exe
 # =========================================================================
 def download_ytdlp():
+    """Scarica sempre il nightly fresco: la stable resta indietro di
+    3-4 settimane rispetto alle rotture API YouTube."""
     dest = BUNDLE_DIR / "yt-dlp.exe"
-    if dest.exists():
-        log(f"yt-dlp.exe gia presente: {dest}")
-        return dest
-
-    log(f"Scarico yt-dlp.exe ...")
     BUNDLE_DIR.mkdir(parents=True, exist_ok=True)
+    log(f"Scarico yt-dlp.exe nightly ...")
     urllib.request.urlretrieve(YTDLP_URL, dest)
     log(f"yt-dlp.exe scaricato ({dest.stat().st_size // 1024 // 1024} MB)")
     return dest

core/charts.py

@@ -0,0 +1,437 @@
+"""Fetch classifiche musicali da varie sorgenti + cache SQLite.
+
+Sorgenti supportate:
+- **iTunes RSS** (`fetch_itunes`) — Top 100 "most-played" per paese (it/us/gb/ww).
+  Endpoint pubblico, no auth. Response JSON.
+- **Last.fm** (`fetch_lastfm`) — Top tracks per tag (combinazione decade
+  + genere musicale, es. "90s dance"). Richiede API key: c'e' una demo
+  hardcoded, l'utente puo' generarne una propria e sovrascriverla via
+  config (`lastfm_api_key`). https://www.last.fm/api/account/create
+- **Spotify** (`fetch_spotify`) — Legge playlist chart editoriali di Spotify
+  (Top 50 / Viral 50 per paese) via `playlists/<id>/tracks`. Riusa le
+  credenziali Client Credentials gia' configurate (`client_id`/
+  `client_secret`). Se mancano ritorna [].
+- **M2O Chart** (`fetch_m2o`) — Scraping HTML della chart dance italiana
+  settimanale di M2O (https://www.m2o.it/classifiche/m2o-chart/).
+
+Tutte le funzioni ritornano una lista di dict con keys:
+    {rank, artist, title, album, image_url, popularity}
+
+Cache SQLite in `~/Library/Application Support/MusicTools/charts_cache.db`
+(dev: nella dir del progetto). TTL 6h. `force=True` bypassa la cache.
+"""
+
+from __future__ import annotations
+
+import json
+import sqlite3
+import time
+from pathlib import Path
+from typing import Optional
+
+import requests
+
+
+# ---- Last.fm ----
+# Demo key: sostituibile via config `lastfm_api_key`. Se questa non funziona
+# piu', registrane una nuova su https://www.last.fm/api/account/create.
+_LASTFM_KEY = "d060bf4a1907efe5b1e4b8b0f9a4a86e"
+_LASTFM_URL = "https://ws.audioscrobbler.com/2.0/"
+
+# ---- iTunes RSS ----
+_ITUNES_URL_TPL = (
+    "https://rss.applemarketingtools.com/api/v2/{country}/music/"
+    "most-played/100/songs.json"
+)
+
+# ---- Spotify chart playlists ----
+# Playlist ID editoriali di Spotify. Chiave interna -> (playlist_id, nome UI).
+_SPOTIFY_CHARTS = {
+    "top50_global":   ("37i9dQZEVXbMDoHDwVN2tF", "Top 50 Global"),
+    "top50_italy":    ("37i9dQZEVXbIQnj7RRhdSX", "Top 50 Italy"),
+    "top50_usa":      ("37i9dQZEVXbLRQDuF5jeBp", "Top 50 USA"),
+    "top50_uk":       ("37i9dQZEVXbLnolsZ8PSNw", "Top 50 UK"),
+    "viral50_global": ("37i9dQZEVXbLiRSasKsNU9", "Viral 50 Global"),
+    "viral50_italy":  ("37i9dQZEVXbNFJfN1Vw8d9", "Viral 50 Italy"),
+}
+
+# ---- M2O Chart ----
+_M2O_URL = "https://www.m2o.it/classifiche/m2o-chart/"
+
+# ---- Cache ----
+_CACHE_TTL_SEC = 6 * 3600  # 6h
+
+
+# ------------------------------------------------------------------
+# Cache SQLite
+# ------------------------------------------------------------------
+def _cache_db_path() -> Path:
+    from core.config import _get_config_dir
+    return _get_config_dir() / "charts_cache.db"
+
+
+def _init_db(conn: sqlite3.Connection) -> None:
+    conn.executescript(
+        """
+        CREATE TABLE IF NOT EXISTS charts(
+          key TEXT PRIMARY KEY,
+          payload TEXT,
+          cached_at REAL
+        );
+        """
+    )
+
+
+def _get_cached(conn: sqlite3.Connection, key: str) -> Optional[list]:
+    row = conn.execute(
+        "SELECT payload, cached_at FROM charts WHERE key=?", (key,)
+    ).fetchone()
+    if not row:
+        return None
+    payload, cached_at = row
+    if time.time() - float(cached_at or 0) > _CACHE_TTL_SEC:
+        return None
+    try:
+        data = json.loads(payload)
+        return data if isinstance(data, list) else None
+    except Exception:
+        return None
+
+
+def _put_cache(conn: sqlite3.Connection, key: str, data: list) -> None:
+    try:
+        conn.execute(
+            "INSERT OR REPLACE INTO charts(key, payload, cached_at) VALUES (?, ?, ?)",
+            (key, json.dumps(data, ensure_ascii=False), time.time()),
+        )
+        conn.commit()
+    except sqlite3.Error:
+        # Cache best-effort: se scrivere fallisce non blocchiamo il fetch
+        pass
+
+
+# ------------------------------------------------------------------
+# Last.fm helpers
+# ------------------------------------------------------------------
+def _get_lastfm_key() -> str:
+    """Ritorna la key Last.fm dalla config se settata, altrimenti la demo."""
+    try:
+        from core.config import load_config
+        k = (load_config().get("lastfm_api_key") or "").strip()
+        return k or _LASTFM_KEY
+    except Exception:
+        return _LASTFM_KEY
+
+
+def _build_lastfm_tag(decade: str, genre: str) -> str:
+    """Combina decade + genere in un tag Last.fm compatibile.
+
+    decade: '' | '70s' | '80s' | '90s' | '2000s' | '2010s'
+    genre:  '' | 'pop' | 'rock' | 'dance' | ...
+
+    Esempi:
+        _build_lastfm_tag('90s', 'dance') -> '90s dance'
+        _build_lastfm_tag('', 'italo disco') -> 'italo disco'
+        _build_lastfm_tag('80s', '') -> '80s'
+        _build_lastfm_tag('', '') -> 'pop'  (fallback)
+    """
+    d = (decade or "").strip().lower()
+    g = (genre or "").strip().lower()
+    parts: list = []
+    if d:
+        parts.append(d)
+    if g:
+        parts.append(g)
+    return " ".join(parts) if parts else "pop"
+
+
+# ------------------------------------------------------------------
+# iTunes RSS
+# ------------------------------------------------------------------
+def fetch_itunes(country: str = "it", force: bool = False) -> list:
+    """Ritorna la top 100 iTunes "most-played" per il paese.
+
+    country: "it" | "us" | "gb" | "ww"
+
+    Ogni entry:
+        {rank, artist, title, album, image_url, popularity=None}
+
+    Cache 6h. `force=True` bypassa. In caso di errore HTTP/JSON ritorna [].
+    """
+    country = (country or "it").lower().strip() or "it"
+    key = f"itunes:{country}"
+
+    conn = sqlite3.connect(_cache_db_path())
+    try:
+        _init_db(conn)
+        if not force:
+            cached = _get_cached(conn, key)
+            if cached is not None:
+                return cached
+
+        url = _ITUNES_URL_TPL.format(country=country)
+        try:
+            resp = requests.get(url, timeout=15)
+            resp.raise_for_status()
+            data = resp.json()
+        except Exception:
+            return []
+
+        entries: list = []
+        for i, item in enumerate(
+            (data.get("feed", {}) or {}).get("results", []) or [], start=1
+        ):
+            entries.append({
+                "rank": i,
+                "artist": (item.get("artistName") or "").strip(),
+                "title": (item.get("name") or "").strip(),
+                "album": (item.get("collectionName") or "").strip(),
+                "image_url": (item.get("artworkUrl100") or "").strip(),
+                "popularity": None,
+            })
+        _put_cache(conn, key, entries)
+        return entries
+    finally:
+        conn.close()
+
+
+# ------------------------------------------------------------------
+# Last.fm
+# ------------------------------------------------------------------
+def fetch_lastfm(decade: str, genre: str, force: bool = False) -> list:
+    """Ritorna top tracks per il tag Last.fm costruito da decade+genere.
+
+    Esempi:
+        fetch_lastfm('90s', 'dance')     -> tag '90s dance'
+        fetch_lastfm('', 'italo disco')  -> tag 'italo disco'
+
+    Cache 6h. In caso di errore o `tracks.track` mancante ritorna [].
+    """
+    tag = _build_lastfm_tag(decade, genre)
+    key = f"lastfm:{tag}"
+
+    conn = sqlite3.connect(_cache_db_path())
+    try:
+        _init_db(conn)
+        if not force:
+            cached = _get_cached(conn, key)
+            if cached is not None:
+                return cached
+
+        try:
+            resp = requests.get(
+                _LASTFM_URL,
+                params={
+                    "method": "tag.gettoptracks",
+                    "tag": tag,
+                    "api_key": _get_lastfm_key(),
+                    "format": "json",
+                    "limit": 50,
+                },
+                timeout=15,
+            )
+            resp.raise_for_status()
+            data = resp.json()
+        except Exception:
+            return []
+
+        entries: list = []
+        tracks = (data.get("tracks", {}) or {}).get("track", []) or []
+        for i, item in enumerate(tracks, start=1):
+            artist_obj = item.get("artist") or {}
+            if isinstance(artist_obj, dict):
+                artist_name = (artist_obj.get("name") or "").strip()
+            else:
+                artist_name = str(artist_obj).strip()
+            # Ultima immagine (di solito la piu' grande) se presente
+            image_url = ""
+            imgs = item.get("image") or []
+            if isinstance(imgs, list) and imgs:
+                last = imgs[-1]
+                if isinstance(last, dict):
+                    image_url = (last.get("#text") or "").strip()
+            entries.append({
+                "rank": i,
+                "artist": artist_name,
+                "title": (item.get("name") or "").strip(),
+                "album": "",
+                "image_url": image_url,
+                "popularity": item.get("listeners"),
+            })
+        _put_cache(conn, key, entries)
+        return entries
+    finally:
+        conn.close()
+
+
+# ------------------------------------------------------------------
+# Spotify chart playlists
+# ------------------------------------------------------------------
+def _spotify_credentials() -> tuple:
+    """Ritorna (client_id, client_secret) dalla config, o ('','') se assenti."""
+    try:
+        from core.config import load_config
+        cfg = load_config()
+        return (
+            (cfg.get("client_id") or "").strip(),
+            (cfg.get("client_secret") or "").strip(),
+        )
+    except Exception:
+        return ("", "")
+
+
+def fetch_spotify(playlist_key: str, force: bool = False) -> list:
+    """Ritorna i primi 50 brani di una chart playlist editoriale Spotify.
+
+    `playlist_key` deve essere una chiave di `_SPOTIFY_CHARTS`.
+    Richiede `client_id`/`client_secret` gia' configurate (le stesse
+    usate dalle altre tab). Se mancano o l'auth fallisce ritorna [].
+    """
+    key = (playlist_key or "").strip()
+    if key not in _SPOTIFY_CHARTS:
+        return []
+    playlist_id, _label = _SPOTIFY_CHARTS[key]
+    cache_key = f"spotify:{key}"
+
+    conn = sqlite3.connect(_cache_db_path())
+    try:
+        _init_db(conn)
+        if not force:
+            cached = _get_cached(conn, cache_key)
+            if cached is not None:
+                return cached
+
+        client_id, client_secret = _spotify_credentials()
+        if not client_id or not client_secret:
+            return []
+
+        # Import qui per evitare import ciclici con core.config a livello modulo.
+        from core.spotify_client import get_access_token
+        try:
+            token = get_access_token(client_id, client_secret)
+        except Exception:
+            return []
+
+        try:
+            resp = requests.get(
+                f"https://api.spotify.com/v1/playlists/{playlist_id}/tracks",
+                headers={"Authorization": f"Bearer {token}"},
+                params={"limit": 50},
+                timeout=15,
+            )
+            resp.raise_for_status()
+            data = resp.json()
+        except Exception:
+            return []
+
+        entries: list = []
+        items = data.get("items") or []
+        for i, item in enumerate(items, start=1):
+            track = (item or {}).get("track") or {}
+            if not track:
+                continue
+            artists = track.get("artists") or []
+            artist_names = [
+                (a.get("name") or "").strip()
+                for a in artists
+                if isinstance(a, dict) and a.get("name")
+            ]
+            artist = ", ".join(artist_names)
+            album = ((track.get("album") or {}).get("name") or "").strip()
+            image_url = ""
+            imgs = ((track.get("album") or {}).get("images") or [])
+            if imgs and isinstance(imgs[0], dict):
+                image_url = (imgs[0].get("url") or "").strip()
+            entries.append({
+                "rank": i,
+                "artist": artist,
+                "title": (track.get("name") or "").strip(),
+                "album": album,
+                "image_url": image_url,
+                "popularity": track.get("popularity"),
+            })
+        _put_cache(conn, cache_key, entries)
+        return entries
+    finally:
+        conn.close()
+
+
+# ------------------------------------------------------------------
+# M2O Chart
+# ------------------------------------------------------------------
+def fetch_m2o(force: bool = False) -> list:
+    """Scraping della chart dance italiana settimanale di M2O.
+
+    La pagina non ha API: parsiamo l'HTML con BeautifulSoup. Estraiamo
+    da ogni <article>:
+        - rank    <- .position (int, altrimenti skip)
+        - title   <- h3.title.song
+        - artist  <- h4.title.author (lista virgola-separata, lasciata così)
+        - image_url <- figure img[src]
+
+    album e popularity sono sempre vuoti (non presenti nella pagina).
+    Cache 6h. Errori HTTP/parse -> [].
+    """
+    cache_key = "m2o:chart"
+
+    conn = sqlite3.connect(_cache_db_path())
+    try:
+        _init_db(conn)
+        if not force:
+            cached = _get_cached(conn, cache_key)
+            if cached is not None:
+                return cached
+
+        try:
+            resp = requests.get(
+                _M2O_URL,
+                headers={"User-Agent": "Mozilla/5.0 (MusicTools charts)"},
+                timeout=15,
+            )
+            resp.raise_for_status()
+            html = resp.text
+        except Exception:
+            return []
+
+        try:
+            from bs4 import BeautifulSoup
+            soup = BeautifulSoup(html, "html.parser")
+        except Exception:
+            return []
+
+        entries: list = []
+        for art in soup.find_all("article"):
+            pos_el = art.select_one(".position")
+            if pos_el is None:
+                continue
+            try:
+                rank = int((pos_el.get_text() or "").strip())
+            except (ValueError, TypeError):
+                continue
+
+            title_el = art.select_one("h3.title.song") or art.select_one("h3.song")
+            artist_el = art.select_one("h4.title.author") or art.select_one("h4.author")
+            title = title_el.get_text(strip=True) if title_el else ""
+            artist = artist_el.get_text(strip=True) if artist_el else ""
+            if not title and not artist:
+                continue
+
+            img_el = art.select_one("figure img")
+            image_url = ""
+            if img_el is not None:
+                image_url = (img_el.get("src") or img_el.get("data-src") or "").strip()
+
+            entries.append({
+                "rank": rank,
+                "artist": artist,
+                "title": title,
+                "album": "",
+                "image_url": image_url,
+                "popularity": None,
+            })
+
+        entries.sort(key=lambda e: e.get("rank", 9999))
+        _put_cache(conn, cache_key, entries)
+        return entries
+    finally:
+        conn.close()

core/config.py

@@ -5,7 +5,7 @@ import os
 import sys
 from pathlib import Path
 
-VERSION = "v1.11.1"
+VERSION = "v1.14.0"
 
 
 APP_NAME = "MusicTools"
@@ -88,6 +88,17 @@ DEFAULTS = {
     "catalog_last_target": "",
     "catalog_recursive": True,
     "acoustid_app_key": "",  # opzionale: se vuoto usa default in core/acoustid.py
+    # ---- Charts (iTunes RSS + Last.fm + Spotify + M2O) ----
+    "charts_last_source": "itunes",          # "itunes" | "spotify" | "m2o" | "lastfm"
+    "charts_itunes_country": "it",           # "it" | "us" | "gb" | "ww"
+    "charts_lastfm_decade": "90s",           # "" | "70s" | "80s" | "90s" | "2000s" | "2010s"
+    "charts_lastfm_genre": "dance",          # "" | pop, rock, dance, ...
+    "charts_spotify_playlist": "top50_global",  # chiave in charts._SPOTIFY_CHARTS
+    "lastfm_api_key": "",                    # opzionale: override della chiave demo
+    # ---- Diritti / Royalty-free check ----
+    "royalty_last_folder": "",
+    "royalty_recursive": True,
+    "jamendo_client_id": "",  # opzionale: registrati su devportal.jamendo.com
     # ---- Licenza ----
     "license_key": "",          # chiave fornita all'utente via email
     "license_email": "",        # email associata all'acquisto

core/downloader.py

@@ -247,6 +247,7 @@ def download_playlist(
                     **subprocess_flags(),
                 )
 
+            last_lines: list = []  # buffer per capire l'errore se exit != 0
             for line in _current_process.stdout:
                 if is_stopped():
                     _current_process.terminate()
@@ -254,6 +255,13 @@ def download_playlist(
                         progress_callback(i, total, query, "stopped", 0)
                     return
 
+                # Tieni le ultime 10 righe non-progress per il report d'errore
+                stripped = line.strip()
+                if stripped and not re.match(r"^\[download\]\s+\d", stripped):
+                    last_lines.append(stripped)
+                    if len(last_lines) > 10:
+                        last_lines.pop(0)
+
                 # Parse progress da output yt-dlp
                 pct_match = re.search(r"(\d+(?:\.\d+)?)%", line)
                 if pct_match and progress_callback:
@@ -278,8 +286,17 @@ def download_playlist(
                 if progress_callback:
                     progress_callback(i, total, query, "done", 100)
             else:
+                # Estrai la vera causa da last_lines: cerca la riga ERROR di yt-dlp
+                err_hint = ""
+                for l in reversed(last_lines):
+                    if "ERROR" in l or "error" in l:
+                        err_hint = l[:220]
+                        break
+                if not err_hint and last_lines:
+                    err_hint = last_lines[-1][:220]
+                detail = f" — {err_hint}" if err_hint else ""
                 if progress_callback:
-                    progress_callback(i, total, query, f"error: yt-dlp exit {return_code}", 0)
+                    progress_callback(i, total, query, f"error: yt-dlp exit {return_code}{detail}", 0)
 
         except Exception as e:
             with _process_lock:

core/metadata.py

@@ -14,6 +14,7 @@ from mutagen import File as MutagenFile
 from mutagen.id3 import (
     ID3, ID3NoHeaderError,
     APIC, TIT2, TPE1, TPE2, TALB, TDRC, TRCK, TCON, COMM, TBPM, TKEY,
+    USLT, WOAS,
 )
 from mutagen.mp4 import MP4, MP4Cover
 from mutagen.flac import FLAC, Picture
@@ -84,6 +85,69 @@ def _text(value) -> str:
     return str(value)
 
 
+_AI_MARKERS = {
+    "suno": ["suno.com", "made with suno", "sunoai"],
+    "udio": ["udio.com", "made with udio"],
+    "riffusion": ["riffusion.com", "made with riffusion"],
+    "mubert": ["mubert.com", "made with mubert"],
+    "aiva": ["aiva.ai"],
+    "boomy": ["boomy.com", "made with boomy"],
+    "soundraw": ["soundraw.io"],
+    "loudly": ["loudly.com"],
+}
+
+
+def _detect_ai(comment: str, source_url: str, extra: str = "") -> tuple:
+    """Ritorna (is_ai: bool, source_name: str). Case-insensitive.
+    `extra` = altre stringhe da controllare (es. presenza C2PA manifest)."""
+    blob = f"{comment} {source_url} {extra}".lower()
+    for source, markers in _AI_MARKERS.items():
+        for m in markers:
+            if m in blob:
+                return True, source
+    if "c2pa" in blob:
+        return True, ""
+    return False, ""
+
+
+def _dump_id3_frames(tags) -> list:
+    """Lista compatta di tutti i frame ID3 (esclusa APIC binaria).
+    Ogni voce: {key, preview, size, kind}. Utile per audit AI-generated."""
+    out = []
+    for key in tags.keys():
+        try:
+            frame = tags[key]
+        except Exception:
+            continue
+        kind = "text"
+        preview = ""
+        size = 0
+        if key.startswith("APIC"):
+            kind = "binary"
+            preview = f"{frame.mime or 'image'} ({len(frame.data)} bytes)"
+            size = len(frame.data)
+        elif key.startswith("GEOB"):
+            kind = "binary"
+            data = getattr(frame, "data", b"") or b""
+            desc = getattr(frame, "desc", "") or ""
+            mime = getattr(frame, "mime", "") or ""
+            preview = f"{desc or mime or 'blob'} ({len(data)} bytes)"
+            size = len(data)
+        elif key.startswith("USLT"):
+            txt = getattr(frame, "text", "") or ""
+            preview = txt[:180] + ("…" if len(txt) > 180 else "")
+            size = len(txt)
+        elif key.startswith("WOAS") or key.startswith("WXXX") or key.startswith("WOAR"):
+            preview = getattr(frame, "url", "") or str(frame)
+            size = len(preview)
+        else:
+            txt = str(frame)
+            preview = txt[:180] + ("…" if len(txt) > 180 else "")
+            size = len(txt)
+        out.append({"key": key, "preview": preview, "size": size, "kind": kind})
+    return out
+
+
 def _read_mp3(path: str, result: dict) -> dict:
     result["format"] = "MP3"
     try:
@@ -91,6 +155,8 @@ def _read_mp3(path: str, result: dict) -> dict:
     except ID3NoHeaderError:
         return result
 
+    result["raw_frames"] = _dump_id3_frames(tags)
+
     result["title"] = _text(tags.get("TIT2"))
     result["artist"] = _text(tags.get("TPE1"))
     result["album_artist"] = _text(tags.get("TPE2"))
@@ -100,12 +166,19 @@ def _read_mp3(path: str, result: dict) -> dict:
     result["genre"] = _text(tags.get("TCON"))
     result["bpm"] = _text(tags.get("TBPM"))
     result["key"] = _text(tags.get("TKEY"))
+    result["source_url"] = _text(tags.get("WOAS"))
 
     for k in tags.keys():
         if k.startswith("COMM"):
             result["comment"] = _text(tags[k])
             break
 
+    for k in tags.keys():
+        if k.startswith("USLT"):
+            frame = tags[k]
+            result["lyrics"] = getattr(frame, "text", "") or ""
+            break
+
     for k in tags.keys():
         if k.startswith("APIC"):
             apic = tags[k]
@@ -113,13 +186,44 @@ def _read_mp3(path: str, result: dict) -> dict:
             result["cover_mime"] = apic.mime or "image/jpeg"
             break
 
+    # AI detection: C2PA manifest (GEOB frame) o markers testuali
+    has_c2pa = any("c2pa" in k.lower() for k in tags.keys())
+    result["ai_generated"], result["ai_source"] = _detect_ai(
+        result["comment"], result["source_url"], "c2pa" if has_c2pa else "",
+    )
+
     return result
 
 
+def _dump_mp4_atoms(tags) -> list:
+    out = []
+    for key, val in tags.items():
+        preview = ""
+        kind = "text"
+        size = 0
+        if key == "covr":
+            kind = "binary"
+            data = bytes(val[0]) if val else b""
+            preview = f"cover ({len(data)} bytes)"
+            size = len(data)
+        else:
+            try:
+                preview = str(val[0] if isinstance(val, list) and val else val)
+            except Exception:
+                preview = "<binary>"
+            if isinstance(preview, str):
+                size = len(preview)
+                if len(preview) > 180:
+                    preview = preview[:180] + "…"
+        out.append({"key": key, "preview": preview, "size": size, "kind": kind})
+    return out
+
+
 def _read_mp4(path: str, result: dict) -> dict:
     result["format"] = "M4A/MP4"
     m = MP4(path)
     tags = m.tags or {}
+    result["raw_frames"] = _dump_mp4_atoms(tags)
     result["title"] = _text(tags.get("\xa9nam"))
     result["artist"] = _text(tags.get("\xa9ART"))
     result["album_artist"] = _text(tags.get("aART"))
@@ -132,12 +236,24 @@ def _read_mp4(path: str, result: dict) -> dict:
     result["genre"] = _text(tags.get("\xa9gen"))
     result["comment"] = _text(tags.get("\xa9cmt"))
     result["bpm"] = _text(tags.get("tmpo"))
+    result["lyrics"] = _text(tags.get("\xa9lyr"))
+    # M4A non ha WOAS: cerchiamo in freeform ----:com.apple.iTunes:URL
+    for k in tags.keys():
+        if isinstance(k, str) and k.startswith("----") and "URL" in k.upper():
+            v = tags[k]
+            if v:
+                result["source_url"] = v[0].decode("utf-8", errors="ignore") if isinstance(v[0], bytes) else str(v[0])
+                break
 
     covers = tags.get("covr")
     if covers:
         c = covers[0]
         result["cover_base64"] = base64.b64encode(bytes(c)).decode("ascii")
         result["cover_mime"] = "image/jpeg" if c.imageformat == MP4Cover.FORMAT_JPEG else "image/png"
+
+    result["ai_generated"], result["ai_source"] = _detect_ai(
+        result["comment"], result["source_url"],
+    )
     return result
 
 
@@ -292,8 +408,13 @@ def read_metadata(path: str) -> dict:
         "bpm": "", "key": "",
         "duration": 0, "bitrate": 0,
         "cover_base64": "", "cover_mime": "",
+        "lyrics": "",           # USLT (MP3), \xa9lyr (M4A), UNSYNCEDLYRICS (FLAC)
+        "source_url": "",       # WOAS (MP3), custom (altri) — es. URL Suno
+        "ai_generated": False,  # True se rilevato marker AI (C2PA, "made with suno"...)
+        "ai_source": "",        # es. "suno", "udio", "riffusion" — sorgente dedotta
         "where_from": _read_where_from(str(p)),
         "is_macos": sys.platform == "darwin",
+        "raw_frames": [],       # list of {key, preview, size, kind} — tutti i frame ID3/atomi
     }
 
     audio = MutagenFile(str(p))
@@ -346,6 +467,22 @@ def _write_mp3(path: str, data: dict, cover_path: Optional[str], remove_cover: b
     if comment:
         tags.add(COMM(encoding=3, lang="ita", desc="", text=comment))
 
+    # Lyrics (USLT). Rimuovi tutti gli USLT esistenti, poi (ri)crea se non vuoto
+    for k in list(tags.keys()):
+        if k.startswith("USLT"):
+            del tags[k]
+    lyrics = data.get("lyrics", "")
+    if lyrics:
+        tags.add(USLT(encoding=3, lang="eng", desc="", text=lyrics))
+
+    # Source URL (WOAS)
+    if "source_url" in data:
+        src = data.get("source_url", "")
+        if "WOAS" in tags:
+            del tags["WOAS"]
+        if src:
+            tags.add(WOAS(url=src))
+
     # Cover
     if remove_cover or cover_path:
         for k in list(tags.keys()):
@@ -379,6 +516,7 @@ def _write_mp4(path: str, data: dict, cover_path: Optional[str], remove_cover: b
     set_or_del("\xa9day", data.get("year", ""))
     set_or_del("\xa9gen", data.get("genre", ""))
     set_or_del("\xa9cmt", data.get("comment", ""))
+    set_or_del("\xa9lyr", data.get("lyrics", ""))
 
     track = data.get("track", "")
     if track:
@@ -518,3 +656,38 @@ def write_metadata(path: str, data: dict, cover_path: Optional[str] = None,
     # macOS extended attribute: kMDItemWhereFroms (lista URL/origini)
     if "where_from" in data:
         _write_where_from(path, data.get("where_from") or [])
+
+
+def remove_frames(path: str, frame_keys: list) -> int:
+    """Rimuove specifici frame ID3 (MP3) o atomi (MP4) dal file.
+    Ritorna il numero di frame rimossi. `frame_keys` sono le chiavi
+    esatte così come tornano da `raw_frames` (es. "TXXX:comment",
+    "GEOB:c2pa manifest store", "\xa9lyr")."""
+    if not frame_keys:
+        return 0
+    ext = Path(path).suffix.lower()
+    removed = 0
+    if ext == ".mp3":
+        try:
+            tags = ID3(path)
+        except ID3NoHeaderError:
+            return 0
+        for key in frame_keys:
+            if key in tags:
+                del tags[key]
+                removed += 1
+        if removed:
+            tags.save(path)
+    elif ext in (".m4a", ".mp4", ".aac"):
+        m = MP4(path)
+        if m.tags is None:
+            return 0
+        for key in frame_keys:
+            if key in m.tags:
+                del m.tags[key]
+                removed += 1
+        if removed:
+            m.save()
+    else:
+        raise ValueError(f"Rimozione frame non supportata per: {ext}")
+    return removed

core/royalty_check.py

@@ -0,0 +1,398 @@
+"""Verifica royalty-free status di brani locali contro DB CC/open.
+
+Approccio onesto: whitelist royalty-free. L'app segnala un brano come
+"royalty_free" SOLO se trova un match affidabile in uno dei DB CC/open.
+"Non trovato" (status 'unknown') NON implica automaticamente SIAE —
+significa semplicemente "da verificare manualmente".
+
+Pipeline:
+  1. Scansiona la cartella (filtra per `AUDIO_EXTENSIONS` di
+     `core.upgrader`).
+  2. Per ogni file legge i tag ID3 (artist + title) via
+     `core.metadata.read_metadata`; fallback a
+     `core.catalog._parse_filename` se i tag sono mancanti.
+  3. Query sorgenti royalty-free:
+       - ccMixter (nessuna auth, sempre attivo)
+       - Jamendo (richiede `jamendo_client_id` in config; se vuoto, skip)
+  4. Levenshtein combinato artist+title >= `_SIMILARITY_THRESHOLD` →
+     status 'royalty_free'. Altrimenti 'unknown'.
+
+Progress callback firma:
+    (processed, total, filename, status[, err_msg])
+Status: 'checking' | 'stopped' | 'completed' | 'error'.
+
+`entry_callback(entry)` viene chiamato per ogni file processato
+(streaming alla UI).
+"""
+
+from __future__ import annotations
+
+import json
+import sqlite3
+import threading
+import time
+from difflib import SequenceMatcher
+from pathlib import Path
+from typing import Callable, Optional
+
+import requests
+
+from core.upgrader import AUDIO_EXTENSIONS
+
+
+# ------------------------------------------------------------------
+# Costanti
+# ------------------------------------------------------------------
+_CCMIXTER_URL = "https://ccmixter.org/api/query"
+_JAMENDO_URL = "https://api.jamendo.com/v3.0/tracks/"
+_HTTP_TIMEOUT = 15
+_RATE_LIMIT_SEC = 0.3
+_SIMILARITY_THRESHOLD = 0.80
+
+
+# ------------------------------------------------------------------
+# Stop / interrupt
+# ------------------------------------------------------------------
+_stop_event = threading.Event()
+
+
+def request_stop() -> None:
+    """Segnala al worker di interrompere la scansione al prossimo file."""
+    _stop_event.set()
+
+
+def reset_stop() -> None:
+    """Azzera il flag di stop prima di iniziare una nuova scansione."""
+    _stop_event.clear()
+
+
+def is_stopped() -> bool:
+    return _stop_event.is_set()
+
+
+# ------------------------------------------------------------------
+# Cache SQLite
+# ------------------------------------------------------------------
+def _cache_db_path() -> Path:
+    """Path del file di cache SQLite (patchable nei test)."""
+    from core.config import _get_config_dir
+    return _get_config_dir() / "royalty_cache.db"
+
+
+def _init_db(conn: sqlite3.Connection) -> None:
+    conn.executescript(
+        """
+        CREATE TABLE IF NOT EXISTS lookups(
+          key TEXT PRIMARY KEY,
+          payload TEXT,
+          cached_at REAL
+        );
+        """
+    )
+
+
+# ------------------------------------------------------------------
+# Similarity
+# ------------------------------------------------------------------
+def _similarity(a: str, b: str) -> float:
+    """Ritorna SequenceMatcher ratio (0.0 - 1.0) case-insensitive."""
+    if not a or not b:
+        return 0.0
+    return SequenceMatcher(None, a.lower().strip(), b.lower().strip()).ratio()
+
+
+# ------------------------------------------------------------------
+# Rate limit (globale)
+# ------------------------------------------------------------------
+_last_req = [0.0]
+
+
+def _throttle() -> None:
+    now = time.monotonic()
+    elapsed = now - _last_req[0]
+    if elapsed < _RATE_LIMIT_SEC:
+        time.sleep(_RATE_LIMIT_SEC - elapsed)
+    _last_req[0] = time.monotonic()
+
+
+# ------------------------------------------------------------------
+# Query sorgenti
+# ------------------------------------------------------------------
+def _query_ccmixter(query: str) -> list:
+    """Query ccMixter API. Ritorna lista di candidati normalizzati."""
+    if not query:
+        return []
+    _throttle()
+    try:
+        resp = requests.get(
+            _CCMIXTER_URL,
+            params={"f": "json", "search": query, "limit": 10},
+            timeout=_HTTP_TIMEOUT,
+        )
+        if resp.status_code != 200:
+            return []
+        data = resp.json()
+    except Exception:
+        return []
+    if not isinstance(data, list):
+        return []
+    out = []
+    for item in data:
+        if not isinstance(item, dict):
+            continue
+        out.append({
+            "source": "ccmixter",
+            "title": item.get("upload_name", "") or "",
+            "artist": (item.get("user_real_name")
+                       or item.get("user_name", "")
+                       or ""),
+            "license": item.get("license_name", "") or "",
+            "license_url": item.get("license_url", "") or "",
+            "url": item.get("file_page_url", "") or "",
+        })
+    return out
+
+
+def _query_jamendo(query: str, client_id: str) -> list:
+    """Query Jamendo API. Senza client_id ritorna []."""
+    if not client_id or not query:
+        return []
+    _throttle()
+    try:
+        resp = requests.get(
+            _JAMENDO_URL,
+            params={
+                "client_id": client_id,
+                "format": "json",
+                "limit": 5,
+                "search": query,
+            },
+            timeout=_HTTP_TIMEOUT,
+        )
+        if resp.status_code != 200:
+            return []
+        data = resp.json()
+    except Exception:
+        return []
+    if not isinstance(data, dict):
+        return []
+    status = (data.get("headers", {}) or {}).get("status", "")
+    if status and status != "success":
+        return []
+    out = []
+    for item in data.get("results", []) or []:
+        if not isinstance(item, dict):
+            continue
+        out.append({
+            "source": "jamendo",
+            "title": item.get("name", "") or "",
+            "artist": item.get("artist_name", "") or "",
+            "license": item.get("license_name") or "Creative Commons",
+            "license_url": item.get("license_ccurl", "") or "",
+            "url": item.get("shareurl", "") or "",
+        })
+    return out
+
+
+# ------------------------------------------------------------------
+# Check singolo file
+# ------------------------------------------------------------------
+def check_file(path: str, jamendo_client_id: str = "") -> dict:
+    """Verifica un singolo file. Ritorna:
+        {path, status, matches, query, artist, title[, error]}
+    status: 'royalty_free' | 'unknown' | 'error'.
+    """
+    from core.metadata import read_metadata
+    from core.catalog import _parse_filename
+
+    try:
+        md = read_metadata(path)
+    except Exception as e:
+        return {
+            "path": path,
+            "status": "error",
+            "matches": [],
+            "query": "",
+            "artist": "",
+            "title": "",
+            "error": str(e),
+        }
+
+    artist = (md.get("artist") or "").strip()
+    title = (md.get("title") or "").strip()
+    if not artist or not title:
+        parsed_artist, parsed_title = _parse_filename(Path(path).stem)
+        artist = artist or parsed_artist
+        title = title or parsed_title
+
+    query = f"{artist} {title}".strip() if artist else title
+    if not query:
+        return {
+            "path": path,
+            "status": "unknown",
+            "matches": [],
+            "query": "",
+            "artist": artist,
+            "title": title,
+            "error": "no query (tag + filename vuoti)",
+        }
+
+    # Cache lookup
+    conn = sqlite3.connect(str(_cache_db_path()))
+    try:
+        _init_db(conn)
+        row = conn.execute(
+            "SELECT payload FROM lookups WHERE key=?", (query,)
+        ).fetchone()
+        if row:
+            try:
+                cached = json.loads(row[0])
+                cached["path"] = path
+                # Preserva artist/title correnti nel caso siano stati
+                # ricavati dal filename ma la cache li aveva salvati gia'
+                return cached
+            except Exception:
+                pass
+
+        candidates = _query_ccmixter(query)
+        candidates += _query_jamendo(query, jamendo_client_id)
+
+        matches = []
+        for c in candidates:
+            score_title = _similarity(title, c.get("title", ""))
+            score_artist = (
+                _similarity(artist, c.get("artist", ""))
+                if artist and c.get("artist") else 0.0
+            )
+            if artist:
+                combined = score_title * 0.6 + score_artist * 0.4
+            else:
+                combined = score_title
+            if combined >= _SIMILARITY_THRESHOLD:
+                enriched = dict(c)
+                enriched["score"] = round(combined, 2)
+                matches.append(enriched)
+
+        # Ordina per score desc
+        matches.sort(key=lambda m: m.get("score", 0.0), reverse=True)
+
+        status = "royalty_free" if matches else "unknown"
+        result = {
+            "path": path,
+            "status": status,
+            "matches": matches,
+            "query": query,
+            "artist": artist,
+            "title": title,
+        }
+
+        # Scrivi in cache (senza il path, che e' per-file)
+        try:
+            payload = {k: v for k, v in result.items() if k != "path"}
+            conn.execute(
+                "INSERT OR REPLACE INTO lookups(key, payload, cached_at) "
+                "VALUES (?, ?, ?)",
+                (query, json.dumps(payload, ensure_ascii=False), time.time()),
+            )
+            conn.commit()
+        except Exception:
+            pass
+
+        return result
+    finally:
+        try:
+            conn.close()
+        except Exception:
+            pass
+
+
+# ------------------------------------------------------------------
+# Scan folder
+# ------------------------------------------------------------------
+def _emit_progress(cb: Optional[Callable], idx: int, total: int,
+                   name: str, status: str, err: str = "") -> None:
+    """Chiama progress_callback in modo retrocompatibile (4 o 5 args)."""
+    if not cb:
+        return
+    try:
+        cb(idx, total, name, status, err)
+    except TypeError:
+        try:
+            cb(idx, total, name, status)
+        except Exception:
+            pass
+    except Exception:
+        pass
+
+
+def scan_folder(
+    directory: str,
+    recursive: bool = True,
+    progress_callback: Optional[Callable] = None,
+    entry_callback: Optional[Callable] = None,
+) -> list:
+    """Scansiona la cartella e verifica ogni file audio.
+
+    Ritorna la lista dei risultati per file (vedi `check_file`).
+    `entry_callback(entry)` e' chiamato appena ogni file e' processato.
+    """
+    reset_stop()
+    base = Path(directory)
+    if not base.exists() or not base.is_dir():
+        _emit_progress(progress_callback, 0, 0, "", "completed", "")
+        return []
+
+    files: list = []
+    iterator = base.rglob("*") if recursive else base.iterdir()
+    for f in iterator:
+        try:
+            if f.is_file() and f.suffix.lower() in AUDIO_EXTENSIONS:
+                files.append(f)
+        except OSError:
+            continue
+    files.sort()
+    total = len(files)
+
+    if total == 0:
+        _emit_progress(progress_callback, 0, 0, "", "completed", "")
+        return []
+
+    # Jamendo client_id (opzionale)
+    jamendo_id = ""
+    try:
+        from core.config import load_config
+        jamendo_id = (load_config().get("jamendo_client_id") or "").strip()
+    except Exception:
+        jamendo_id = ""
+
+    results: list = []
+    for i, fp in enumerate(files, start=1):
+        if is_stopped():
+            _emit_progress(progress_callback, i - 1, total, "", "stopped", "")
+            return results
+
+        _emit_progress(progress_callback, i, total, fp.name, "checking", "")
+        try:
+            r = check_file(str(fp), jamendo_client_id=jamendo_id)
+        except Exception as e:
+            r = {
+                "path": str(fp),
+                "status": "error",
+                "matches": [],
+                "query": "",
+                "artist": "",
+                "title": "",
+                "error": str(e),
+            }
+            _emit_progress(progress_callback, i, total, fp.name, "error", str(e))
+
+        results.append(r)
+        if entry_callback:
+            try:
+                entry_callback(r)
+            except Exception:
+                pass
+
+    if not is_stopped():
+        _emit_progress(progress_callback, total, total, "", "completed", "")
+    return results

core/traxsource.py

@@ -14,30 +14,24 @@ from dataclasses import dataclass
 # Generi musicali Traxsource (slug -> (id, display_name)).
 # Aggiornato via scripts/refresh_traxsource_genres.py. Esclusi "sounds/samples/loops",
 # "acapella", "beats", "efx-dj-tools", "stems" (non generi ma tipi di prodotto).
+# NOTA (ago 2026): Traxsource ha rimosso la "Top 100 <genre>" per 10 generi minori
+# (broken-beat-nu-jazz, classic-house, drum-and-bass, electro-house, electronica,
+# leftfield, lounge-chill-out, pop-dance, r-and-b-hip-hop, world). Rimossi dal
+# dropdown finché non ripristinano la playlist canonica.
 GENRES: dict = {
     "afro-house": (27, "Afro House"),
     "afro-latin-brazilian": (23, "Afro / Latin / Brazilian"),
-    "broken-beat-nu-jazz": (2, "Broken Beat / Nu Jazz"),
-    "classic-house": (12, "Classic House"),
     "deep-house": (13, "Deep House"),
-    "drum-and-bass": (31, "Drum & Bass"),
-    "electro-house": (11, "Electro House"),
-    "electronica": (5, "Electronica"),
     "garage": (29, "Garage"),
     "house": (4, "House"),
     "jackin-house": (15, "Jackin House"),
-    "leftfield": (14, "Leftfield"),
-    "lounge-chill-out": (1, "Lounge / Chill Out"),
     "melodic-progressive-house": (19, "Melodic / Progressive House"),
     "minimal-deep-tech": (16, "Minimal / Deep Tech"),
     "nu-disco-indie-dance": (17, "Nu Disco / Indie Dance"),
-    "pop-dance": (32, "Pop Dance"),
-    "r-and-b-hip-hop": (6, "R&B / Hip Hop"),
     "soul-funk-disco": (3, "Soul / Funk / Disco"),
     "soulful-house": (24, "Soulful House"),
     "tech-house": (18, "Tech House"),
     "techno": (20, "Techno"),
-    "world": (30, "World"),
 }
 
 

server/scripts/gen-license.sh

@@ -22,7 +22,7 @@ if [ -z "$EMAIL" ]; then
   exit 1
 fi
 
-SSH_TARGET="musictools@musictools.djluza.com"
+SSH_TARGET="${MUSICTOOLS_SSH:-musictools@musictools.djluza.com}"
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
 ssh "$SSH_TARGET" 'mkdir -p ~/api/scripts'

tests/test_charts.py

@@ -0,0 +1,434 @@
+"""Test per core.charts — fetch iTunes/Last.fm/Spotify/M2O + cache SQLite.
+
+Ogni test isola il DB cache in tmp_path via monkeypatch di `_cache_db_path`
+e usa `responses`/`mock` per non toccare la rete.
+"""
+
+from __future__ import annotations
+
+import time
+from unittest import mock
+
+import pytest
+import responses
+from freezegun import freeze_time
+
+from core import charts
+
+
+# ------------------------------------------------------------------
+# Fixture: cache isolata per test
+# ------------------------------------------------------------------
+@pytest.fixture
+def patched_cache(tmp_path, monkeypatch):
+    db = tmp_path / "charts_cache_test.db"
+    monkeypatch.setattr(charts, "_cache_db_path", lambda: db)
+    return db
+
+
+# ==================================================================
+# iTunes RSS
+# ==================================================================
+class TestFetchItunes:
+    _SAMPLE = {
+        "feed": {
+            "results": [
+                {
+                    "name": "Song A",
+                    "artistName": "Artist A",
+                    "collectionName": "Album A",
+                    "artworkUrl100": "https://cdn/a.jpg",
+                    "url": "https://itunes/1",
+                },
+                {
+                    "name": "Song B",
+                    "artistName": "Artist B",
+                    "collectionName": "Album B",
+                    "artworkUrl100": "https://cdn/b.jpg",
+                    "url": "https://itunes/2",
+                },
+            ]
+        }
+    }
+
+    @responses.activate
+    def test_fetch_itunes_parses_response(self, patched_cache):
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="it"),
+            json=self._SAMPLE,
+            status=200,
+        )
+        out = charts.fetch_itunes("it", force=True)
+        assert len(out) == 2
+        assert out[0] == {
+            "rank": 1,
+            "artist": "Artist A",
+            "title": "Song A",
+            "album": "Album A",
+            "image_url": "https://cdn/a.jpg",
+            "popularity": None,
+        }
+        assert out[1]["rank"] == 2
+        assert out[1]["artist"] == "Artist B"
+
+    @responses.activate
+    def test_fetch_itunes_uses_cache(self, patched_cache):
+        """Seconda chiamata NON deve colpire la rete: il mock registra 1 call."""
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="us"),
+            json=self._SAMPLE,
+            status=200,
+        )
+        first = charts.fetch_itunes("us", force=False)
+        second = charts.fetch_itunes("us", force=False)
+        assert first == second
+        # `responses` fallirebbe se ci fossero call non registrate;
+        # verifica esplicitamente che la seconda non ha creato una call in piu'
+        assert len(responses.calls) == 1
+
+    @responses.activate
+    def test_fetch_itunes_force_bypasses_cache(self, patched_cache):
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="gb"),
+            json=self._SAMPLE,
+            status=200,
+        )
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="gb"),
+            json=self._SAMPLE,
+            status=200,
+        )
+        charts.fetch_itunes("gb", force=False)
+        charts.fetch_itunes("gb", force=True)
+        assert len(responses.calls) == 2
+
+    @responses.activate
+    def test_fetch_itunes_returns_empty_on_error(self, patched_cache):
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="ww"),
+            status=500,
+        )
+        assert charts.fetch_itunes("ww", force=True) == []
+
+    @responses.activate
+    def test_fetch_itunes_defaults_to_it(self, patched_cache):
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="it"),
+            json={"feed": {"results": []}},
+            status=200,
+        )
+        assert charts.fetch_itunes("", force=True) == []
+        assert responses.calls[0].request.url.startswith(
+            "https://rss.applemarketingtools.com/api/v2/it/"
+        )
+
+
+# ==================================================================
+# Last.fm tag builder
+# ==================================================================
+class TestBuildLastfmTag:
+    def test_only_decade(self):
+        assert charts._build_lastfm_tag("80s", "") == "80s"
+
+    def test_only_genre(self):
+        assert charts._build_lastfm_tag("", "italo disco") == "italo disco"
+
+    def test_decade_and_genre(self):
+        assert charts._build_lastfm_tag("90s", "dance") == "90s dance"
+
+    def test_normalizes_case(self):
+        assert charts._build_lastfm_tag("90S", "DANCE") == "90s dance"
+
+    def test_fallback_empty(self):
+        assert charts._build_lastfm_tag("", "") == "pop"
+        assert charts._build_lastfm_tag(None, None) == "pop"
+
+
+# ==================================================================
+# Last.fm fetch
+# ==================================================================
+class TestFetchLastfm:
+    _SAMPLE = {
+        "tracks": {
+            "track": [
+                {
+                    "name": "Blue (Da Ba Dee)",
+                    "artist": {"name": "Eiffel 65"},
+                    "listeners": "12345",
+                    "image": [
+                        {"#text": "small.jpg", "size": "small"},
+                        {"#text": "large.jpg", "size": "large"},
+                    ],
+                },
+                {
+                    "name": "Barbie Girl",
+                    "artist": {"name": "Aqua"},
+                    "listeners": "9999",
+                    "image": [],
+                },
+            ]
+        }
+    }
+
+    @responses.activate
+    def test_fetch_lastfm_parses_response(self, patched_cache):
+        responses.add(responses.GET, charts._LASTFM_URL, json=self._SAMPLE, status=200)
+        out = charts.fetch_lastfm("90s", "dance", force=True)
+        assert len(out) == 2
+        assert out[0]["artist"] == "Eiffel 65"
+        assert out[0]["title"] == "Blue (Da Ba Dee)"
+        # Ultima immagine della lista
+        assert out[0]["image_url"] == "large.jpg"
+        assert out[0]["popularity"] == "12345"
+        # Traccia senza immagini: image_url vuoto
+        assert out[1]["image_url"] == ""
+
+    @responses.activate
+    def test_fetch_lastfm_handles_empty_tracks(self, patched_cache):
+        responses.add(
+            responses.GET, charts._LASTFM_URL,
+            json={"tracks": {}}, status=200,
+        )
+        assert charts.fetch_lastfm("70s", "rock", force=True) == []
+
+    @responses.activate
+    def test_fetch_lastfm_returns_empty_on_error(self, patched_cache):
+        responses.add(responses.GET, charts._LASTFM_URL, status=500)
+        assert charts.fetch_lastfm("80s", "pop", force=True) == []
+
+    @responses.activate
+    def test_fetch_lastfm_uses_cache(self, patched_cache):
+        responses.add(responses.GET, charts._LASTFM_URL, json=self._SAMPLE, status=200)
+        charts.fetch_lastfm("2000s", "house", force=False)
+        charts.fetch_lastfm("2000s", "house", force=False)
+        assert len(responses.calls) == 1
+
+    @responses.activate
+    def test_fetch_lastfm_sends_configured_tag(self, patched_cache):
+        responses.add(responses.GET, charts._LASTFM_URL, json=self._SAMPLE, status=200)
+        charts.fetch_lastfm("90s", "dance", force=True)
+        assert "tag=90s+dance" in responses.calls[0].request.url
+
+
+# ==================================================================
+# Cache TTL
+# ==================================================================
+class TestCacheTtl:
+    @responses.activate
+    def test_cache_ttl_expires(self, patched_cache):
+        sample = {"feed": {"results": []}}
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="it"),
+            json=sample, status=200,
+        )
+        responses.add(
+            responses.GET,
+            charts._ITUNES_URL_TPL.format(country="it"),
+            json=sample, status=200,
+        )
+
+        with freeze_time("2026-01-01 12:00:00"):
+            charts.fetch_itunes("it", force=False)
+            assert len(responses.calls) == 1
+
+        # +7h -> cache scaduta (TTL 6h)
+        with freeze_time("2026-01-01 19:00:00"):
+            charts.fetch_itunes("it", force=False)
+            assert len(responses.calls) == 2
+
+
+# ==================================================================
+# Spotify chart playlists
+# ==================================================================
+class TestSpotifyChartsRegistry:
+    def test_spotify_charts_dict_has_expected_keys(self):
+        expected = {
+            "top50_global", "top50_italy", "top50_usa", "top50_uk",
+            "viral50_global", "viral50_italy",
+        }
+        assert expected.issubset(charts._SPOTIFY_CHARTS.keys())
+        # Ognuno mappato a (playlist_id, label)
+        for k, v in charts._SPOTIFY_CHARTS.items():
+            assert isinstance(v, tuple) and len(v) == 2
+            assert v[0] and v[1]
+
+
+class TestFetchSpotify:
+    _TRACKS = {
+        "items": [
+            {
+                "track": {
+                    "name": "Track One",
+                    "popularity": 88,
+                    "artists": [{"name": "Artist X"}, {"name": "Artist Y"}],
+                    "album": {
+                        "name": "Album Z",
+                        "images": [{"url": "https://spo/img.jpg"}],
+                    },
+                }
+            },
+            {
+                "track": {
+                    "name": "Track Two",
+                    "popularity": 72,
+                    "artists": [{"name": "Solo"}],
+                    "album": {"name": "Alb2", "images": []},
+                }
+            },
+        ]
+    }
+
+    @responses.activate
+    def test_fetch_spotify_parses_response(self, patched_cache, monkeypatch):
+        monkeypatch.setattr(
+            charts, "_spotify_credentials", lambda: ("cid", "csecret"),
+        )
+        monkeypatch.setattr(
+            "core.spotify_client.get_access_token",
+            lambda cid, csecret: "tok",
+        )
+        pid, _ = charts._SPOTIFY_CHARTS["top50_global"]
+        responses.add(
+            responses.GET,
+            f"https://api.spotify.com/v1/playlists/{pid}/tracks",
+            json=self._TRACKS,
+            status=200,
+        )
+        out = charts.fetch_spotify("top50_global", force=True)
+        assert len(out) == 2
+        assert out[0]["rank"] == 1
+        assert out[0]["artist"] == "Artist X, Artist Y"
+        assert out[0]["title"] == "Track One"
+        assert out[0]["album"] == "Album Z"
+        assert out[0]["image_url"] == "https://spo/img.jpg"
+        assert out[0]["popularity"] == 88
+        assert out[1]["image_url"] == ""
+
+    @responses.activate
+    def test_fetch_spotify_uses_cache(self, patched_cache, monkeypatch):
+        monkeypatch.setattr(
+            charts, "_spotify_credentials", lambda: ("cid", "csecret"),
+        )
+        monkeypatch.setattr(
+            "core.spotify_client.get_access_token",
+            lambda cid, csecret: "tok",
+        )
+        pid, _ = charts._SPOTIFY_CHARTS["top50_italy"]
+        responses.add(
+            responses.GET,
+            f"https://api.spotify.com/v1/playlists/{pid}/tracks",
+            json=self._TRACKS, status=200,
+        )
+        charts.fetch_spotify("top50_italy", force=False)
+        charts.fetch_spotify("top50_italy", force=False)
+        assert len(responses.calls) == 1
+
+    def test_fetch_spotify_returns_empty_if_no_creds(self, patched_cache, monkeypatch):
+        monkeypatch.setattr(charts, "_spotify_credentials", lambda: ("", ""))
+        assert charts.fetch_spotify("top50_global", force=True) == []
+
+    def test_fetch_spotify_returns_empty_if_invalid_key(self, patched_cache):
+        assert charts.fetch_spotify("not_a_real_key", force=True) == []
+
+    @responses.activate
+    def test_fetch_spotify_returns_empty_on_404(self, patched_cache, monkeypatch):
+        monkeypatch.setattr(
+            charts, "_spotify_credentials", lambda: ("cid", "csecret"),
+        )
+        monkeypatch.setattr(
+            "core.spotify_client.get_access_token",
+            lambda cid, csecret: "tok",
+        )
+        pid, _ = charts._SPOTIFY_CHARTS["viral50_global"]
+        responses.add(
+            responses.GET,
+            f"https://api.spotify.com/v1/playlists/{pid}/tracks",
+            status=404,
+        )
+        assert charts.fetch_spotify("viral50_global", force=True) == []
+
+
+# ==================================================================
+# M2O Chart
+# ==================================================================
+class TestFetchM2O:
+    _HTML = """
+    <html><body>
+      <main>
+        <article>
+          <div class="chart-left">
+            <span class="position equal">1</span>
+            <div class="text-list">
+              <h3 class="title small song">MOVIN' TO THE SUN</h3>
+              <h4 class="title xsmall author">HUGEL, IMAEL ANGEL, ULTRA NATE</h4>
+            </div>
+          </div>
+          <div class="chart-right">
+            <figure><img src="https://m2o/img1.jpg"></figure>
+          </div>
+        </article>
+        <article>
+          <div class="chart-left">
+            <span class="position">2</span>
+            <h3 class="title small song">SECOND SONG</h3>
+            <h4 class="title xsmall author">DJ TEST</h4>
+          </div>
+          <div class="chart-right">
+            <figure><img src="https://m2o/img2.jpg"></figure>
+          </div>
+        </article>
+        <article>
+          <div class="chart-left">
+            <span class="position">N/A</span>
+            <h3 class="title small song">INVALID</h3>
+          </div>
+        </article>
+      </main>
+    </body></html>
+    """
+
+    @responses.activate
+    def test_fetch_m2o_parses_html(self, patched_cache):
+        responses.add(responses.GET, charts._M2O_URL, body=self._HTML, status=200)
+        out = charts.fetch_m2o(force=True)
+        # Il 3o article ha "N/A" come position -> skippato
+        assert len(out) == 2
+        assert out[0]["rank"] == 1
+        assert out[0]["title"] == "MOVIN' TO THE SUN"
+        assert out[0]["artist"] == "HUGEL, IMAEL ANGEL, ULTRA NATE"
+        assert out[0]["image_url"] == "https://m2o/img1.jpg"
+        assert out[0]["album"] == ""
+        assert out[0]["popularity"] is None
+        assert out[1]["rank"] == 2
+
+    @responses.activate
+    def test_fetch_m2o_skips_invalid_position(self, patched_cache):
+        # Solo 1 article valido nella pagina
+        responses.add(
+            responses.GET, charts._M2O_URL,
+            body="""<article>
+              <span class="position">not_a_number</span>
+              <h3 class="title small song">X</h3>
+            </article>""",
+            status=200,
+        )
+        assert charts.fetch_m2o(force=True) == []
+
+    @responses.activate
+    def test_fetch_m2o_uses_cache(self, patched_cache):
+        responses.add(responses.GET, charts._M2O_URL, body=self._HTML, status=200)
+        charts.fetch_m2o(force=False)
+        charts.fetch_m2o(force=False)
+        assert len(responses.calls) == 1
+
+    @responses.activate
+    def test_fetch_m2o_empty_on_error(self, patched_cache):
+        responses.add(responses.GET, charts._M2O_URL, status=500)
+        assert charts.fetch_m2o(force=True) == []

tests/test_royalty_check.py

@@ -0,0 +1,373 @@
+"""Test per core.royalty_check — ccMixter + Jamendo + cache SQLite.
+
+Nessuna integrazione reale: tutte le chiamate di rete sono mockate con
+`responses`. La cache SQLite e' isolata in tmp_path.
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+from unittest import mock
+
+import pytest
+import responses
+
+from core import royalty_check as rc
+
+
+# ------------------------------------------------------------------
+# Fixture: cache isolata per test
+# ------------------------------------------------------------------
+@pytest.fixture
+def patched_cache(tmp_path, monkeypatch):
+    db = tmp_path / "royalty_cache_test.db"
+    monkeypatch.setattr(rc, "_cache_db_path", lambda: db)
+    # Azzera il throttle globale per non rallentare i test
+    monkeypatch.setattr(rc, "_last_req", [0.0])
+    monkeypatch.setattr(rc, "_RATE_LIMIT_SEC", 0.0)
+    return db
+
+
+# ==================================================================
+# _similarity
+# ==================================================================
+class TestSimilarity:
+    def test_similarity_perfect_match(self):
+        assert rc._similarity("hello world", "hello world") == pytest.approx(1.0)
+
+    def test_similarity_case_insensitive(self):
+        assert rc._similarity("Hello World", "hello world") == pytest.approx(1.0)
+
+    def test_similarity_empty_returns_zero(self):
+        assert rc._similarity("", "foo") == 0.0
+        assert rc._similarity("foo", "") == 0.0
+        assert rc._similarity("", "") == 0.0
+
+    def test_similarity_partial(self):
+        s = rc._similarity("Daft Punk - Around The World", "Around The World")
+        # SequenceMatcher usa chunks comuni: valore stabile e > 0.5
+        assert 0.5 < s < 1.0
+
+
+# ==================================================================
+# _query_ccmixter
+# ==================================================================
+class TestQueryCcmixter:
+    _SAMPLE = [
+        {
+            "upload_name": "Around The World",
+            "user_real_name": "Jane Doe",
+            "user_name": "jane",
+            "license_name": "Attribution Noncommercial (3.0)",
+            "license_url": "https://creativecommons.org/licenses/by-nc/3.0/",
+            "file_page_url": "https://ccmixter.org/files/jane/1",
+        },
+        {
+            "upload_name": "Other Song",
+            "user_real_name": "",
+            "user_name": "bob",
+            "license_name": "CC BY 4.0",
+            "license_url": "https://creativecommons.org/licenses/by/4.0/",
+            "file_page_url": "https://ccmixter.org/files/bob/2",
+        },
+    ]
+
+    @responses.activate
+    def test_query_ccmixter_parses_response(self, patched_cache):
+        responses.add(
+            responses.GET,
+            rc._CCMIXTER_URL,
+            json=self._SAMPLE,
+            status=200,
+        )
+        res = rc._query_ccmixter("Around The World")
+        assert len(res) == 2
+        assert res[0]["source"] == "ccmixter"
+        assert res[0]["title"] == "Around The World"
+        assert res[0]["artist"] == "Jane Doe"
+        assert "licenses" in res[0]["license_url"]
+        # Fallback a user_name quando user_real_name e' vuoto
+        assert res[1]["artist"] == "bob"
+
+    @responses.activate
+    def test_query_ccmixter_empty_on_http_error(self, patched_cache):
+        responses.add(
+            responses.GET,
+            rc._CCMIXTER_URL,
+            json={"error": "boom"},
+            status=500,
+        )
+        assert rc._query_ccmixter("whatever") == []
+
+    @responses.activate
+    def test_query_ccmixter_empty_on_bad_json(self, patched_cache):
+        responses.add(
+            responses.GET,
+            rc._CCMIXTER_URL,
+            json={"not": "a list"},
+            status=200,
+        )
+        assert rc._query_ccmixter("whatever") == []
+
+    def test_query_ccmixter_empty_query(self, patched_cache):
+        # Nessuna chiamata di rete attesa — se la facesse responses fallirebbe
+        assert rc._query_ccmixter("") == []
+
+
+# ==================================================================
+# _query_jamendo
+# ==================================================================
+class TestQueryJamendo:
+    _SAMPLE = {
+        "headers": {"status": "success"},
+        "results": [
+            {
+                "id": "123",
+                "name": "Freedom Song",
+                "artist_name": "Open Artist",
+                "license_name": "CC BY-SA",
+                "license_ccurl": "https://creativecommons.org/licenses/by-sa/4.0/",
+                "shareurl": "https://www.jamendo.com/track/123",
+                "audio": "https://.../123.mp3",
+            }
+        ],
+    }
+
+    def test_query_jamendo_requires_client_id(self, patched_cache):
+        # Nessun client_id -> ritorno vuoto senza chiamata di rete
+        # (responses non e' attivato: una chiamata farebbe raise)
+        assert rc._query_jamendo("Freedom Song", client_id="") == []
+
+    @responses.activate
+    def test_query_jamendo_parses_response(self, patched_cache):
+        responses.add(
+            responses.GET,
+            rc._JAMENDO_URL,
+            json=self._SAMPLE,
+            status=200,
+        )
+        res = rc._query_jamendo("Freedom Song", client_id="abcd1234")
+        assert len(res) == 1
+        assert res[0]["source"] == "jamendo"
+        assert res[0]["title"] == "Freedom Song"
+        assert res[0]["artist"] == "Open Artist"
+        assert res[0]["license"] == "CC BY-SA"
+        assert res[0]["url"].startswith("https://www.jamendo.com/")
+
+    @responses.activate
+    def test_query_jamendo_status_failure_returns_empty(self, patched_cache):
+        responses.add(
+            responses.GET,
+            rc._JAMENDO_URL,
+            json={"headers": {"status": "failed", "error_message": "bad key"},
+                  "results": []},
+            status=200,
+        )
+        assert rc._query_jamendo("Freedom Song", client_id="bad") == []
+
+
+# ==================================================================
+# check_file
+# ==================================================================
+def _fake_metadata(artist: str, title: str):
+    """Factory per un dict compatibile con core.metadata.read_metadata."""
+    return {"artist": artist, "title": title}
+
+
+class TestCheckFile:
+    def test_check_file_matches_royalty_free(self, patched_cache, tmp_path):
+        # Prepara un path "esistente" solo per plausibilita' (il
+        # read_metadata e' mockato: non viene mai letto davvero).
+        p = tmp_path / "track.mp3"
+        p.write_bytes(b"\x00")
+
+        cc_hit = [{
+            "upload_name": "Around The World",
+            "user_real_name": "Jane Doe",
+            "user_name": "jane",
+            "license_name": "CC BY 3.0",
+            "license_url": "https://creativecommons.org/licenses/by/3.0/",
+            "file_page_url": "https://ccmixter.org/x/1",
+        }]
+
+        with mock.patch.object(rc, "_query_ccmixter", return_value=[{
+            "source": "ccmixter",
+            "title": "Around The World",
+            "artist": "Jane Doe",
+            "license": "CC BY 3.0",
+            "license_url": cc_hit[0]["license_url"],
+            "url": cc_hit[0]["file_page_url"],
+        }]), mock.patch.object(rc, "_query_jamendo", return_value=[]), \
+             mock.patch("core.metadata.read_metadata",
+                        return_value=_fake_metadata("Jane Doe",
+                                                     "Around The World")):
+            res = rc.check_file(str(p))
+
+        assert res["status"] == "royalty_free"
+        assert len(res["matches"]) == 1
+        assert res["matches"][0]["source"] == "ccmixter"
+        assert res["matches"][0]["score"] >= 0.8
+        assert res["artist"] == "Jane Doe"
+        assert res["title"] == "Around The World"
+
+    def test_check_file_no_match_returns_unknown(self, patched_cache, tmp_path):
+        p = tmp_path / "unknown.mp3"
+        p.write_bytes(b"\x00")
+
+        with mock.patch.object(rc, "_query_ccmixter", return_value=[{
+            "source": "ccmixter",
+            "title": "Completamente Diverso",
+            "artist": "Qualcun Altro",
+            "license": "CC BY",
+            "license_url": "",
+            "url": "",
+        }]), mock.patch.object(rc, "_query_jamendo", return_value=[]), \
+             mock.patch("core.metadata.read_metadata",
+                        return_value=_fake_metadata("Daft Punk",
+                                                     "Harder Better Faster")):
+            res = rc.check_file(str(p))
+
+        assert res["status"] == "unknown"
+        assert res["matches"] == []
+        # artist/title conservati dai tag
+        assert res["artist"] == "Daft Punk"
+
+    def test_check_file_uses_cache(self, patched_cache, tmp_path):
+        p = tmp_path / "cached.mp3"
+        p.write_bytes(b"\x00")
+
+        cc_mock = mock.MagicMock(return_value=[{
+            "source": "ccmixter",
+            "title": "Hello",
+            "artist": "World",
+            "license": "CC BY",
+            "license_url": "",
+            "url": "",
+        }])
+        jm_mock = mock.MagicMock(return_value=[])
+        md_mock = mock.MagicMock(return_value=_fake_metadata("World", "Hello"))
+
+        with mock.patch.object(rc, "_query_ccmixter", cc_mock), \
+             mock.patch.object(rc, "_query_jamendo", jm_mock), \
+             mock.patch("core.metadata.read_metadata", md_mock):
+            res1 = rc.check_file(str(p))
+            res2 = rc.check_file(str(p))
+
+        assert res1["status"] == "royalty_free"
+        assert res2["status"] == "royalty_free"
+        # Seconda chiamata hitta la cache: le query API non vengono richiamate
+        assert cc_mock.call_count == 1
+        assert jm_mock.call_count == 1
+
+    def test_check_file_fallback_to_filename_when_tags_missing(
+            self, patched_cache, tmp_path):
+        """Senza tag ID3, usa _parse_filename sul nome del file."""
+        # Filename stile "Artista - Titolo.mp3"
+        p = tmp_path / "Jane Doe - Around The World.mp3"
+        p.write_bytes(b"\x00")
+
+        with mock.patch.object(rc, "_query_ccmixter", return_value=[{
+            "source": "ccmixter",
+            "title": "Around The World",
+            "artist": "Jane Doe",
+            "license": "CC BY",
+            "license_url": "",
+            "url": "",
+        }]), mock.patch.object(rc, "_query_jamendo", return_value=[]), \
+             mock.patch("core.metadata.read_metadata",
+                        return_value=_fake_metadata("", "")):
+            res = rc.check_file(str(p))
+
+        assert res["status"] == "royalty_free"
+        assert res["artist"] == "Jane Doe"
+        assert res["title"] == "Around The World"
+
+    def test_check_file_metadata_error_returns_error_status(
+            self, patched_cache, tmp_path):
+        p = tmp_path / "broken.mp3"
+        p.write_bytes(b"\x00")
+
+        with mock.patch("core.metadata.read_metadata",
+                         side_effect=ValueError("formato illeggibile")):
+            res = rc.check_file(str(p))
+
+        assert res["status"] == "error"
+        assert "formato illeggibile" in res.get("error", "")
+
+
+# ==================================================================
+# scan_folder
+# ==================================================================
+class TestScanFolder:
+    def test_scan_folder_streams_entries(self, patched_cache, tmp_path):
+        # Crea 3 file audio nella cartella
+        for name in ("a.mp3", "b.mp3", "c.flac"):
+            (tmp_path / name).write_bytes(b"\x00")
+
+        fake_result = {
+            "path": "",
+            "status": "unknown",
+            "matches": [],
+            "query": "q",
+            "artist": "A",
+            "title": "T",
+        }
+
+        collected = []
+
+        def _entry_cb(entry):
+            collected.append(entry)
+
+        with mock.patch.object(rc, "check_file", return_value=fake_result):
+            results = rc.scan_folder(
+                str(tmp_path),
+                recursive=False,
+                entry_callback=_entry_cb,
+            )
+
+        assert len(results) == 3
+        assert len(collected) == 3
+
+    def test_scan_folder_filters_non_audio(self, patched_cache, tmp_path):
+        (tmp_path / "ok.mp3").write_bytes(b"\x00")
+        (tmp_path / "note.txt").write_text("hello")
+        (tmp_path / "image.png").write_bytes(b"\x00")
+
+        with mock.patch.object(rc, "check_file",
+                               return_value={"path": "", "status": "unknown",
+                                             "matches": [], "query": "",
+                                             "artist": "", "title": ""}):
+            results = rc.scan_folder(str(tmp_path), recursive=False)
+        assert len(results) == 1
+
+    def test_scan_folder_empty_directory(self, patched_cache, tmp_path):
+        empty = tmp_path / "empty"
+        empty.mkdir()
+        results = rc.scan_folder(str(empty), recursive=False)
+        assert results == []
+
+    def test_scan_folder_nonexistent_directory(self, patched_cache, tmp_path):
+        results = rc.scan_folder(str(tmp_path / "missing"), recursive=False)
+        assert results == []
+
+    def test_scan_folder_progress_callback_called(self, patched_cache, tmp_path):
+        (tmp_path / "a.mp3").write_bytes(b"\x00")
+        (tmp_path / "b.mp3").write_bytes(b"\x00")
+
+        events = []
+
+        def _progress(idx, total, name, status, err=""):
+            events.append((idx, total, status))
+
+        fake_result = {
+            "path": "", "status": "unknown", "matches": [],
+            "query": "", "artist": "", "title": "",
+        }
+
+        with mock.patch.object(rc, "check_file", return_value=fake_result):
+            rc.scan_folder(str(tmp_path), recursive=False,
+                            progress_callback=_progress)
+
+        # Attendo almeno "checking" per ciascun file + "completed" finale
+        assert any(e[2] == "completed" for e in events)
+        assert sum(1 for e in events if e[2] == "checking") >= 2

webui/css/style.css

@@ -207,6 +207,17 @@ button, input, select, textarea { font-family: inherit; font-size: inherit; }
 }
 .nav::-webkit-scrollbar-thumb:hover { background: var(--bg-input-hover); }
 
+.nav-section-label {
+  padding: 12px 14px 6px;
+  font-size: 10px;
+  font-weight: 800;
+  letter-spacing: 1.2px;
+  text-transform: uppercase;
+  color: var(--text-3);
+  user-select: none;
+}
+.nav-section-label:first-child { padding-top: 4px; }
+
 .nav-item {
   display: flex;
   align-items: center;
@@ -567,6 +578,87 @@ input[type="number"]::-webkit-inner-spin-button {
 .path-display:empty,
 .path-display.empty { color: var(--text-3); }
 
+.ai-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 3px 10px;
+  border-radius: 999px;
+  font-size: 11px;
+  font-weight: 800;
+  letter-spacing: 0.5px;
+  text-transform: uppercase;
+  background: linear-gradient(135deg, var(--purple), var(--pink));
+  color: #fff;
+  box-shadow: 0 2px 6px rgba(168, 85, 247, 0.35);
+  white-space: nowrap;
+  cursor: default;
+}
+.ai-badge[hidden] { display: none !important; }
+.ai-badge::before { content: "🤖"; }
+
+.raw-frames-details {
+  margin-top: 8px;
+  padding: 12px;
+  background: var(--bg-card-2);
+  border-radius: var(--r-sm);
+  border: 1px solid var(--border);
+}
+.raw-frames-details summary {
+  cursor: pointer;
+  font-weight: 700;
+  font-size: 13px;
+  color: var(--text-2);
+  padding: 2px 0;
+  user-select: none;
+}
+.raw-frames-details summary:hover { color: var(--text); }
+.raw-frames-details[open] summary { margin-bottom: 10px; color: var(--text); }
+.raw-frames-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
+}
+.raw-frames-table th,
+.raw-frames-table td {
+  padding: 6px 8px;
+  border-bottom: 1px solid var(--divider);
+  text-align: left;
+  vertical-align: top;
+}
+.raw-frames-table th {
+  color: var(--text-3);
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+  font-size: 10px;
+}
+.raw-frames-table td.raw-key {
+  font-family: ui-monospace, SF Mono, Menlo, monospace;
+  color: var(--indigo-text);
+  white-space: nowrap;
+}
+.raw-frames-table td.raw-preview {
+  word-break: break-word;
+  color: var(--text);
+}
+.raw-frames-table td.raw-size {
+  text-align: right;
+  color: var(--text-3);
+  white-space: nowrap;
+}
+.raw-frames-table .kind-binary {
+  display: inline-block;
+  padding: 1px 6px;
+  border-radius: 3px;
+  font-size: 10px;
+  font-weight: 700;
+  background: var(--amber-dim);
+  color: var(--amber-text);
+  text-transform: uppercase;
+}
+
 /* ===============================
    BUTTONS
    =============================== */
@@ -701,6 +793,7 @@ input[type="number"]::-webkit-inner-spin-button {
 .percent.blue { color: var(--blue-text); }
 .percent.pink { color: var(--pink-hover); }
 .percent.purple { color: var(--purple-text); }
+.percent.amber { color: var(--amber-text); }
 
 .progress {
   width: 100%;
@@ -733,6 +826,10 @@ input[type="number"]::-webkit-inner-spin-button {
   background: linear-gradient(90deg, var(--purple), var(--purple-hover));
 }
 
+.progress-fill.amber {
+  background: linear-gradient(90deg, var(--amber), var(--amber-hover));
+}
+
 /* ===============================
    LOG BOX
    =============================== */
@@ -2116,3 +2213,231 @@ input[type="number"]::-webkit-inner-spin-button {
   border: 1px solid var(--border);
 }
 
+/* ==================================================================
+ * Charts tab (iTunes / Spotify / M2O / Last.fm)
+ * Riusa in gran parte le classi catalog-* per stile e comportamento.
+ * ================================================================== */
+.charts-source-row {
+  display: flex;
+  gap: 18px;
+  flex-wrap: wrap;
+  margin-bottom: 14px;
+}
+
+.charts-radio {
+  display: inline-flex;
+  gap: 8px;
+  align-items: center;
+  font-size: 14px;
+  color: var(--text-1);
+  cursor: pointer;
+  padding: 6px 10px;
+  border-radius: 999px;
+  background: var(--bg-input);
+  border: 1px solid var(--border);
+  transition: background 0.15s ease, border-color 0.15s ease;
+}
+
+.charts-radio:hover {
+  background: var(--bg-elev);
+}
+
+.charts-radio input[type="radio"] {
+  accent-color: var(--indigo-hover, #6366F1);
+  cursor: pointer;
+}
+
+.charts-radio input[type="radio"]:checked ~ span {
+  color: var(--text-1);
+  font-weight: 600;
+}
+
+.charts-filters {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 14px;
+  align-items: flex-start;
+  margin-top: 8px;
+}
+.charts-filters[hidden] { display: none !important; }
+
+.charts-actions-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 10px;
+  flex-wrap: wrap;
+}
+
+.charts-actions-btns {
+  display: flex;
+  gap: 8px;
+}
+
+.charts-scroll {
+  max-height: 55vh;
+  overflow-y: auto;
+  overflow-x: auto;
+  padding-right: 6px;
+  border: 1px solid var(--border);
+  border-radius: var(--r-md);
+  background: var(--bg-card);
+}
+
+.charts-table {
+  width: 100%;
+  border-collapse: separate;
+  border-spacing: 0;
+  font-size: 12px;
+  color: var(--text-2);
+}
+
+.charts-table thead th {
+  position: sticky;
+  top: 0;
+  z-index: 2;
+  background: var(--bg-card-2);
+  color: var(--text-1);
+  font-weight: 700;
+  padding: 10px 8px;
+  text-align: left;
+  font-size: 11px;
+  letter-spacing: 0.3px;
+  text-transform: uppercase;
+  border-bottom: 1px solid var(--border);
+  white-space: nowrap;
+}
+
+.charts-table tbody td {
+  padding: 8px;
+  border-bottom: 1px solid var(--border);
+  vertical-align: middle;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 260px;
+}
+
+.charts-table tbody tr:hover {
+  background: var(--bg-elev);
+}
+
+.charts-col-check { width: 30px; text-align: center; }
+.charts-col-rank { width: 42px; text-align: center; font-variant-numeric: tabular-nums; color: var(--text-3); font-weight: 700; }
+.charts-col-pop  { width: 110px; text-align: right; font-variant-numeric: tabular-nums; color: var(--text-3); }
+
+.charts-check {
+  width: 16px;
+  height: 16px;
+  cursor: pointer;
+  accent-color: var(--indigo-hover, #6366F1);
+}
+
+.charts-footer-bar {
+  position: sticky;
+  bottom: 0;
+  z-index: 5;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+  padding: 12px 16px;
+  margin-top: 12px;
+  border-radius: var(--r-md);
+  background: var(--bg-card);
+  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
+  border: 1px solid var(--border);
+}
+
+
+/* ==================================================================
+ * Royalty (tab Diritti) — verifica royalty-free status.
+ * Riusa .catalog-table per lo stile base; override specifici qui.
+ * ================================================================== */
+.royalty-scroll {
+  max-height: 55vh;
+  overflow-y: auto;
+  overflow-x: auto;
+  padding-right: 6px;
+  border: 1px solid var(--border);
+  border-radius: var(--r-md);
+  background: var(--bg-card);
+}
+
+.royalty-table tbody td {
+  padding: 8px;
+  border-bottom: 1px solid var(--border);
+  vertical-align: middle;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 320px;
+}
+
+.royalty-col-file   { max-width: 260px; }
+.royalty-col-artist { max-width: 160px; }
+.royalty-col-title  { max-width: 220px; }
+.royalty-col-status { width: 120px; }
+.royalty-col-match  { max-width: 320px; }
+
+/* Badge stato royalty */
+.royalty-badge {
+  display: inline-block;
+  padding: 2px 8px;
+  border-radius: 10px;
+  font-size: 10px;
+  font-weight: 700;
+  letter-spacing: 0.3px;
+  text-transform: uppercase;
+  white-space: nowrap;
+}
+.royalty-badge-rf {
+  background: var(--green-dim, rgba(16, 185, 129, 0.15));
+  color: var(--green-text);
+}
+.royalty-badge-unknown {
+  background: var(--bg-input);
+  color: var(--text-3);
+}
+.royalty-badge-error {
+  background: rgba(220, 38, 38, 0.15);
+  color: var(--red);
+}
+
+/* Dettaglio match (sorgente + licenza + link) */
+.royalty-match-cell {
+  display: block;
+  white-space: normal;
+  line-height: 1.4;
+  color: var(--text-2);
+  font-size: 12px;
+}
+.royalty-match-cell a {
+  color: var(--amber-text);
+  text-decoration: none;
+}
+.royalty-match-cell a:hover {
+  text-decoration: underline;
+}
+.royalty-match-source {
+  font-weight: 700;
+  color: var(--text-1);
+  margin-right: 6px;
+}
+.royalty-match-score {
+  color: var(--text-3);
+  font-size: 11px;
+  margin-left: 6px;
+}
+
+/* Riga con stato royalty_free: tinta verde tenue di sfondo */
+.royalty-table tbody tr.royalty-row-rf {
+  background: rgba(16, 185, 129, 0.06);
+}
+.royalty-table tbody tr.royalty-row-rf:hover {
+  background: rgba(16, 185, 129, 0.12);
+}
+.royalty-table tbody tr.royalty-row-error {
+  background: rgba(220, 38, 38, 0.05);
+}

webui/index.html

@@ -21,6 +21,7 @@
       <div class="divider"></div>
 
       <nav class="nav">
+        <div class="nav-section-label">Scarica</div>
         <button class="nav-item active" data-view="download" data-feature="audio">
           <span class="nav-icon">⬇</span>
           <span>Scarica</span>
@@ -29,14 +30,6 @@
           <span class="nav-icon">🎬</span>
           <span>Video</span>
         </button>
-        <button class="nav-item" data-view="beatport" data-feature="audio">
-          <span class="nav-icon">🎧</span>
-          <span>Beatport</span>
-        </button>
-        <button class="nav-item" data-view="traxsource" data-feature="audio">
-          <span class="nav-icon">▲</span>
-          <span>Traxsource</span>
-        </button>
         <button class="nav-item" data-view="spotify" data-feature="audio">
           <span class="nav-icon">🟢</span>
           <span>Spotify</span>
@@ -45,10 +38,20 @@
           <span class="nav-icon">▶</span>
           <span>YouTube</span>
         </button>
-        <button class="nav-item" data-view="convert" data-feature="audio">
-          <span class="nav-icon">🔄</span>
-          <span>Converti</span>
+        <button class="nav-item" data-view="beatport" data-feature="audio">
+          <span class="nav-icon">🎧</span>
+          <span>Beatport</span>
         </button>
+        <button class="nav-item" data-view="traxsource" data-feature="audio">
+          <span class="nav-icon">▲</span>
+          <span>Traxsource</span>
+        </button>
+        <button class="nav-item" data-view="charts" data-feature="audio">
+          <span class="nav-icon">📊</span>
+          <span>Charts</span>
+        </button>
+
+        <div class="nav-section-label">Organizza</div>
         <button class="nav-item" data-view="dedup" data-feature="audio">
           <span class="nav-icon">🗑</span>
           <span>Dedup</span>
@@ -61,18 +64,30 @@
           <span class="nav-icon">📤</span>
           <span>Appiattisci</span>
         </button>
-        <button class="nav-item" data-view="upgrade" data-feature="upgrade">
-          <span class="nav-icon">⚡</span>
-          <span>Upgrade</span>
+        <button class="nav-item" data-view="convert" data-feature="audio">
+          <span class="nav-icon">🔄</span>
+          <span>Converti</span>
         </button>
         <button class="nav-item" data-view="meta" data-feature="metadata">
           <span class="nav-icon">🏷</span>
           <span>Metadati</span>
         </button>
+        <button class="nav-item" data-view="upgrade" data-feature="upgrade">
+          <span class="nav-icon">⚡</span>
+          <span>Upgrade</span>
+        </button>
+        <button class="nav-item" data-view="royalty" data-feature="audio">
+          <span class="nav-icon">⚖️</span>
+          <span>Diritti</span>
+        </button>
+
+        <div class="nav-section-label">Altro</div>
         <button class="nav-item" data-view="record" data-feature="record">
           <span class="nav-icon">●</span>
           <span>Registra</span>
         </button>
+
+        <div class="nav-section-label">Sistema</div>
         <button class="nav-item" data-view="settings">
           <span class="nav-icon">⚙</span>
           <span>Impostazioni</span>
@@ -433,6 +448,7 @@
           <div class="row">
             <button class="btn btn-amber pill" id="metaPickBtn">📂 Apri file audio</button>
             <div class="path-display" id="metaPathDisplay">Nessun file selezionato</div>
+            <span id="metaAiBadge" class="ai-badge" hidden title="Brano generato con AI"></span>
           </div>
           <div class="meta-info" id="metaInfo" hidden></div>
         </div>
@@ -481,6 +497,42 @@
                 <label class="field-label">Commento</label>
                 <textarea id="metaComment" class="input textarea" rows="3"></textarea>
               </div>
+              <div class="field full">
+                <label class="field-label">URL sorgente (WOAS)</label>
+                <input type="text" id="metaSourceUrl" class="input pill" placeholder="https://...">
+                <div class="cover-hint">Link alla pagina d'origine del brano (es. Suno, YouTube, SoundCloud). Sopravvive alle copie del file.</div>
+              </div>
+              <div class="field full">
+                <label class="field-label">Testo / Prompt (USLT)</label>
+                <textarea id="metaLyrics" class="input textarea" rows="8" placeholder="Lyrics del brano o prompt AI utilizzato..."></textarea>
+                <div class="cover-hint">Testo o prompt strutturato. Suno lo compila automaticamente al momento della generazione.</div>
+              </div>
+              <details class="field full raw-frames-details">
+                <summary>Metadati avanzati (tutti i frame ID3 grezzi)</summary>
+                <table class="raw-frames-table" id="metaRawFrames">
+                  <thead>
+                    <tr>
+                      <th style="width:32px;"><input type="checkbox" id="metaRawSelectAll" title="Seleziona tutti"></th>
+                      <th>Frame</th>
+                      <th>Tipo</th>
+                      <th>Contenuto</th>
+                      <th style="text-align:right;">Bytes</th>
+                    </tr>
+                  </thead>
+                  <tbody></tbody>
+                </table>
+                <div class="row" style="margin-top:10px;justify-content:space-between;align-items:center;">
+                  <span id="metaRawSelectedCount" style="font-size:12px;color:var(--text-3);">0 selezionati</span>
+                  <button id="metaRawRemoveBtn" class="btn btn-danger pill btn-sm" disabled>
+                    🗑 Rimuovi selezionati
+                  </button>
+                </div>
+                <div class="cover-hint" style="margin-top:8px;">
+                  I frame standard (TIT2 titolo, TPE1 artista, TALB album, APIC cover…) si gestiscono con i campi sopra.
+                  Qui rimuovi frame custom come TXXX, GEOB (C2PA), USLT (lyrics) o COMM extra.
+                </div>
+              </details>
+
               <div class="field full" id="metaWhereFromField" hidden>
                 <label class="field-label">
                   Origine (macOS · kMDItemWhereFroms)
@@ -543,6 +595,22 @@
           </div>
         </div>
 
+        <h2 class="section-label">Jamendo (tab Diritti)</h2>
+        <div class="card">
+          <div class="field">
+            <label class="field-label">Jamendo client_id (opzionale, per check royalty-free)</label>
+            <input type="text" id="jamendoClientIdInput" class="input pill" placeholder="Es: 0e23c33a" />
+            <div class="hint">
+              <span class="hint-ico">ⓘ</span>
+              <div>
+                Registrati gratis su <code>devportal.jamendo.com</code> per avere una chiave e
+                verificare contro il catalogo Jamendo (~500k brani Creative Commons).
+                Senza chiave la tab Diritti usa solo ccMixter.
+              </div>
+            </div>
+          </div>
+        </div>
+
         <h2 class="section-label">Download</h2>
         <div class="card">
           <div class="field">
@@ -1497,6 +1565,260 @@
         </div>
       </section>
 
+      <!-- ===== VIEW: CHARTS ===== -->
+      <section class="view" id="view-charts">
+        <header class="hero hero-indigo">
+          <div class="hero-content">
+            <div class="hero-eyebrow indigo">CHARTS</div>
+            <h1 class="hero-title">Esplora le classifiche</h1>
+            <p class="hero-subtitle">Del momento (iTunes/Spotify), dance italiana (M2O) o storiche per genere (Last.fm) — aggiungi in un click alla coda Scarica.</p>
+          </div>
+          <div class="hero-deco">📊</div>
+        </header>
+
+        <h2 class="section-label">Sorgente</h2>
+        <div class="card">
+          <div class="charts-source-row">
+            <label class="charts-radio">
+              <input type="radio" name="charts-source" value="itunes" checked />
+              <span>🎵 Del momento (iTunes)</span>
+            </label>
+            <label class="charts-radio">
+              <input type="radio" name="charts-source" value="spotify" />
+              <span>🟢 Spotify Charts</span>
+            </label>
+            <label class="charts-radio">
+              <input type="radio" name="charts-source" value="m2o" />
+              <span>🔴 M2O Chart (dance italiana)</span>
+            </label>
+            <label class="charts-radio">
+              <input type="radio" name="charts-source" value="lastfm" />
+              <span>📻 Storiche per genere (Last.fm)</span>
+            </label>
+          </div>
+
+          <div class="charts-filters" id="charts-filters-itunes">
+            <div class="field inline">
+              <label class="field-label">Paese</label>
+              <select id="charts-itunes-country" class="input pill input-sm">
+                <option value="it">🇮🇹 Italia</option>
+                <option value="us">🇺🇸 USA</option>
+                <option value="gb">🇬🇧 UK</option>
+                <option value="ww">🌐 Mondo</option>
+              </select>
+            </div>
+          </div>
+
+          <div class="charts-filters" id="charts-filters-spotify" hidden>
+            <div class="field inline">
+              <label class="field-label">Playlist chart</label>
+              <select id="charts-spotify-playlist" class="input pill input-sm">
+                <option value="top50_global">Top 50 Global</option>
+                <option value="top50_italy">Top 50 Italy</option>
+                <option value="top50_usa">Top 50 USA</option>
+                <option value="top50_uk">Top 50 UK</option>
+                <option value="viral50_global">Viral 50 Global</option>
+                <option value="viral50_italy">Viral 50 Italy</option>
+              </select>
+            </div>
+            <div class="hint" style="margin-top:8px;">
+              <span class="hint-ico">ⓘ</span>
+              <div>
+                Le playlist Spotify richiedono le tue credenziali API (Impostazioni → Spotify).
+                Senza credenziali questa sorgente resta vuota.
+              </div>
+            </div>
+          </div>
+
+          <div class="charts-filters" id="charts-filters-m2o" hidden>
+            <div class="hint">
+              <span class="hint-ico">ⓘ</span>
+              <div>
+                Chart dance italiana settimanale di M2O. Nessun filtro: premi "Aggiorna" per caricare la classifica corrente.
+              </div>
+            </div>
+          </div>
+
+          <div class="charts-filters" id="charts-filters-lastfm" hidden>
+            <div class="field inline">
+              <label class="field-label">Decade</label>
+              <select id="charts-lastfm-decade" class="input pill input-sm">
+                <option value="">Nessuna</option>
+                <option value="70s">Anni 70</option>
+                <option value="80s">Anni 80</option>
+                <option value="90s" selected>Anni 90</option>
+                <option value="2000s">Anni 2000</option>
+                <option value="2010s">Anni 2010</option>
+              </select>
+            </div>
+            <div class="field inline">
+              <label class="field-label">Genere</label>
+              <select id="charts-lastfm-genre" class="input pill input-sm">
+                <option value="">Nessuno</option>
+                <option value="pop">Pop</option>
+                <option value="rock">Rock</option>
+                <option value="dance" selected>Dance</option>
+                <option value="house">House</option>
+                <option value="hip hop">Hip Hop</option>
+                <option value="latin">Latin</option>
+                <option value="r&amp;b">R&amp;B</option>
+                <option value="italo disco">Italo Disco</option>
+                <option value="reggae">Reggae</option>
+                <option value="electronic">Electronic</option>
+              </select>
+            </div>
+            <div class="hint" style="margin-top:8px;">
+              <span class="hint-ico">ⓘ</span>
+              <div>
+                Last.fm richiede una API key: nell'app c'è una chiave demo, se non funziona
+                registrane una gratuita su <code>last.fm/api/account/create</code> e mettila nel campo
+                <code>lastfm_api_key</code> di <code>config.json</code>.
+              </div>
+            </div>
+          </div>
+
+          <div class="beatport-header" style="margin-top:14px;gap:12px;">
+            <button id="charts-fetch-btn" class="btn btn-primary pill">
+              <span class="ico">▶</span> Aggiorna classifica
+            </button>
+            <label style="display:flex;gap:6px;align-items:center;color:var(--text-2);font-size:13px;">
+              <input type="checkbox" id="charts-force" />
+              <span>Ignora cache (force refresh)</span>
+            </label>
+            <span id="charts-status" class="beatport-status"></span>
+          </div>
+        </div>
+
+        <div id="charts-results-card" class="card" hidden>
+          <div class="charts-actions-row">
+            <span id="charts-summary-line" class="catalog-summary"></span>
+            <div class="charts-actions-btns">
+              <button id="charts-select-all-btn" class="btn btn-ghost pill btn-sm">Seleziona tutti</button>
+              <button id="charts-deselect-all-btn" class="btn btn-ghost pill btn-sm">Deseleziona tutti</button>
+            </div>
+          </div>
+          <div id="charts-table-wrap" class="charts-scroll">
+            <table class="charts-table">
+              <thead>
+                <tr>
+                  <th class="charts-col-check">
+                    <input type="checkbox" id="charts-select-all" title="Seleziona/deseleziona tutti" />
+                  </th>
+                  <th class="charts-col-rank">#</th>
+                  <th class="charts-col-artist">Artista</th>
+                  <th class="charts-col-title">Titolo</th>
+                  <th class="charts-col-album">Album</th>
+                  <th class="charts-col-pop">Popolarità</th>
+                </tr>
+              </thead>
+              <tbody id="charts-table-body"></tbody>
+            </table>
+          </div>
+        </div>
+
+        <div class="charts-footer-bar" id="charts-footer-bar" hidden>
+          <span class="counter" id="charts-selected-count">0 brani selezionati</span>
+          <button id="charts-add-queue-btn" class="btn btn-primary pill" disabled>
+            <span class="ico">➕</span> Aggiungi alla coda Scarica
+          </button>
+        </div>
+
+        <h2 class="section-label">Log</h2>
+        <div class="card log-card">
+          <div class="log" id="charts-log"></div>
+        </div>
+      </section>
+
+      <!-- ===== VIEW: DIRITTI (royalty-free check) ===== -->
+      <section class="view" id="view-royalty">
+        <header class="hero hero-amber">
+          <div class="hero-content">
+            <div class="hero-eyebrow amber">DIRITTI</div>
+            <h1 class="hero-title">Royalty-free o da verificare</h1>
+            <p class="hero-subtitle">
+              Confronta i brani locali con i cataloghi Creative Commons
+              (ccMixter, Jamendo). Segnala solo i brani con match certo RF —
+              gli altri richiedono verifica manuale.
+            </p>
+          </div>
+          <div class="hero-deco">⚖️</div>
+        </header>
+
+        <h2 class="section-label">Cartella da analizzare</h2>
+        <div class="card">
+          <div class="beatport-header">
+            <button id="royalty-pick-folder" class="btn btn-primary pill">📁 Scegli cartella</button>
+            <button id="royalty-start-btn" class="btn btn-amber pill" disabled>
+              <span class="ico">▶</span> Avvia analisi
+            </button>
+            <button id="royalty-stop-btn" class="btn btn-danger pill" hidden>
+              <span class="ico">◼</span> Interrompi
+            </button>
+          </div>
+          <div class="beatport-header" style="margin-top:12px;">
+            <span id="royalty-path-display" class="beatport-output-info" style="margin:0;">Nessuna cartella selezionata</span>
+          </div>
+          <div class="beatport-header" style="margin-top:12px;gap:16px;">
+            <label style="display:flex;gap:6px;align-items:center;color:var(--text-2);font-size:13px;">
+              <input type="checkbox" id="royalty-recursive" checked />
+              <span>Ricerca ricorsiva (include sottocartelle)</span>
+            </label>
+          </div>
+          <div class="hint" style="margin-top:10px;">
+            <span class="hint-ico">ⓘ</span>
+            <div>
+              L'app verifica solo contro DB <strong>Creative Commons / royalty-free</strong>.
+              "Non trovato" NON implica automaticamente SIAE: significa "da verificare manualmente".
+              Per abilitare anche Jamendo registra una <code>client_id</code> gratuita su
+              <code>devportal.jamendo.com</code> e inseriscila in Impostazioni.
+            </div>
+          </div>
+          <div id="royalty-status" class="beatport-status"></div>
+        </div>
+
+        <h2 class="section-label">Progresso</h2>
+        <div class="card">
+          <div class="progress">
+            <div class="progress-bar"><div id="royaltyProgressFill" class="progress-fill amber"></div></div>
+            <div class="progress-meta">
+              <span id="royaltyPercent" class="percent amber">0%</span>
+              <span id="royaltyCounter">In attesa</span>
+            </div>
+          </div>
+        </div>
+
+        <h2 class="section-label">Risultati</h2>
+        <div class="card" id="royalty-summary-card" hidden>
+          <div class="catalog-summary" id="royalty-summary-line"></div>
+        </div>
+        <div id="royalty-table-wrap" class="royalty-scroll" hidden>
+          <table class="catalog-table royalty-table">
+            <thead>
+              <tr>
+                <th class="royalty-col-file">File</th>
+                <th class="royalty-col-artist">Artista</th>
+                <th class="royalty-col-title">Titolo</th>
+                <th class="royalty-col-status">Stato</th>
+                <th class="royalty-col-match">Match / Licenza</th>
+              </tr>
+            </thead>
+            <tbody id="royalty-table-body"></tbody>
+          </table>
+        </div>
+
+        <div class="catalog-footer-bar" id="royalty-footer-bar" hidden>
+          <span class="counter" id="royalty-footer-count">0 file analizzati</span>
+          <button id="royalty-export-csv" class="btn btn-ghost pill" disabled>
+            <span class="ico">📄</span> Esporta CSV
+          </button>
+        </div>
+
+        <h2 class="section-label">Log</h2>
+        <div class="card log-card">
+          <div class="log" id="royalty-log"></div>
+        </div>
+      </section>
+
     </main>
   </div>
 

webui/js/app.js

@@ -411,6 +411,8 @@ const logEls = {
   dedup: () => $("#dedup-log"),
   catalog: () => $("#catalog-log"),
   flatten: () => $("#flatten-log"),
+  charts: () => $("#charts-log"),
+  royalty: () => $("#royalty-log"),
 };
 
 function classifyLog(msg) {
@@ -488,6 +490,7 @@ async function init() {
   $("#hqThresholdInput").value = state.config.hq_threshold || 310;
   $("#cookiesInput").value = state.config.cookies_path || "";
   if ($("#cookiesBrowserSelect")) $("#cookiesBrowserSelect").value = state.config.cookies_browser || "";
+  if ($("#jamendoClientIdInput")) $("#jamendoClientIdInput").value = state.config.jamendo_client_id || "";
   $("#outputInput").value = state.config.output_dir || "";
   $("#themeSelect").value = state.config.theme || "dark";
   // Popola path del log corrente
@@ -542,6 +545,12 @@ async function init() {
   // Cataloga tab (AcoustID -> <Anno>/<Genere>/)
   await CatalogUI.init();
   await FlattenUI.init();
+
+  // Charts tab (iTunes / Spotify / M2O / Last.fm)
+  await ChartsUI.init();
+
+  // Diritti tab (royalty-free check ccMixter + Jamendo)
+  await RoyaltyUI.init();
 }
 
 async function refreshRecDevices() {
@@ -1143,6 +1152,51 @@ function populateMetaForm(d) {
   $("#metaBpm").value = d.bpm || "";
   $("#metaKey").value = d.key || "";
   $("#metaComment").value = d.comment || "";
+  $("#metaSourceUrl").value = d.source_url || "";
+  $("#metaLyrics").value = d.lyrics || "";
+
+  // Raw frames table
+  const rawBody = document.querySelector("#metaRawFrames tbody");
+  if (rawBody) {
+    // Frame gestiti dai campi standard: no checkbox (li rimuovi svuotando il campo)
+    const PROTECTED_MP3 = /^(TIT2|TPE1|TPE2|TALB|TDRC|TRCK|TCON|TBPM|TKEY|APIC)/;
+    const PROTECTED_MP4 = new Set(["\xa9nam","\xa9ART","aART","\xa9alb","\xa9day","trkn","\xa9gen","tmpo","covr"]);
+    rawBody.innerHTML = "";
+    (d.raw_frames || []).forEach((f) => {
+      const tr = document.createElement("tr");
+      const kindHtml = f.kind === "binary"
+        ? '<span class="kind-binary">binary</span>'
+        : '<span style="color:var(--text-3);font-size:11px;">text</span>';
+      const isProtected = PROTECTED_MP3.test(f.key) || PROTECTED_MP4.has(f.key);
+      const cbHtml = isProtected
+        ? '<span title="Frame standard — gestito dai campi sopra" style="color:var(--text-3);font-size:14px;">🔒</span>'
+        : `<input type="checkbox" class="meta-raw-check" data-key="${_escapeHtml(f.key)}">`;
+      tr.innerHTML = `
+        <td style="text-align:center;">${cbHtml}</td>
+        <td class="raw-key">${_escapeHtml(f.key)}</td>
+        <td>${kindHtml}</td>
+        <td class="raw-preview">${_escapeHtml(f.preview || "")}</td>
+        <td class="raw-size">${(f.size || 0).toLocaleString()}</td>
+      `;
+      rawBody.appendChild(tr);
+    });
+    // Reset stato selezione
+    const master = $("#metaRawSelectAll");
+    if (master) { master.checked = false; master.indeterminate = false; }
+    _updateRawFramesSelection();
+  }
+
+  // AI badge
+  const aiBadge = $("#metaAiBadge");
+  if (aiBadge) {
+    if (d.ai_generated) {
+      aiBadge.hidden = false;
+      aiBadge.textContent = d.ai_source ? `AI · ${d.ai_source}` : "AI Generated";
+    } else {
+      aiBadge.hidden = true;
+      aiBadge.textContent = "";
+    }
+  }
 
   // WhereFroms (macOS only)
   if (d.is_macos) {
@@ -1200,6 +1254,51 @@ $("#metaPickBtn").addEventListener("click", async () => {
   if (path) await loadMetaFile(path);
 });
 
+function _updateRawFramesSelection() {
+  const boxes = $$("#metaRawFrames .meta-raw-check");
+  const checked = boxes.filter((b) => b.checked);
+  const cnt = $("#metaRawSelectedCount");
+  if (cnt) cnt.textContent = `${checked.length} selezionati`;
+  const btn = $("#metaRawRemoveBtn");
+  if (btn) btn.disabled = checked.length === 0;
+  const master = $("#metaRawSelectAll");
+  if (master) {
+    if (boxes.length === 0) { master.checked = false; master.indeterminate = false; }
+    else if (checked.length === 0) { master.checked = false; master.indeterminate = false; }
+    else if (checked.length === boxes.length) { master.checked = true; master.indeterminate = false; }
+    else { master.checked = false; master.indeterminate = true; }
+  }
+}
+
+document.addEventListener("change", (e) => {
+  const t = e.target;
+  if (t && t.classList && t.classList.contains("meta-raw-check")) {
+    _updateRawFramesSelection();
+  }
+});
+
+$("#metaRawSelectAll")?.addEventListener("change", (e) => {
+  $$("#metaRawFrames .meta-raw-check").forEach((b) => { b.checked = e.target.checked; });
+  _updateRawFramesSelection();
+});
+
+$("#metaRawRemoveBtn")?.addEventListener("click", async () => {
+  const keys = $$("#metaRawFrames .meta-raw-check")
+    .filter((b) => b.checked)
+    .map((b) => b.dataset.key);
+  if (keys.length === 0) return;
+  if (!window.confirm(`Rimuovere ${keys.length} frame dal file?\n\n${keys.join("\n")}\n\nOperazione permanente.`)) return;
+  const path = state.meta?.path;
+  if (!path) return;
+  const res = await window.pywebview.api.remove_metadata_frames(path, keys);
+  if (res && res.ok) {
+    toast(`Rimossi ${res.removed || 0} frame`, "ok");
+    await loadMetaFile(path);  // ricarica per aggiornare tabella
+  } else {
+    toast("Errore: " + (res?.error || "sconosciuto"), "error");
+  }
+});
+
 $("#metaCoverBtn").addEventListener("click", async () => {
   const path = await window.pywebview.api.pick_image_file();
   if (!path) return;
@@ -1250,6 +1349,8 @@ $("#metaSaveBtn").addEventListener("click", async () => {
       bpm: $("#metaBpm").value,
       key: $("#metaKey").value,
       comment: $("#metaComment").value,
+      source_url: $("#metaSourceUrl").value.trim(),
+      lyrics: $("#metaLyrics").value,
       where_from: $("#metaWhereFrom").value
         .split("\n")
         .map(s => s.trim())
@@ -1316,6 +1417,7 @@ $("#saveBtn").addEventListener("click", async () => {
     hq_threshold: parseInt($("#hqThresholdInput").value, 10) || 310,
     cookies_path: $("#cookiesInput").value,
     cookies_browser: $("#cookiesBrowserSelect") ? $("#cookiesBrowserSelect").value : "",
+    jamendo_client_id: $("#jamendoClientIdInput") ? $("#jamendoClientIdInput").value : "",
     output_dir: $("#outputInput").value,
     theme: $("#themeSelect").value,
   };
@@ -3770,6 +3872,692 @@ const FlattenUI = (() => {
   return { init };
 })();
 
+// ============================================================
+// ChartsUI — classifiche iTunes / Spotify / M2O / Last.fm
+// ============================================================
+const ChartsUI = (() => {
+  const cs = {
+    source: "itunes",
+    country: "it",
+    playlist: "top50_global",
+    decade: "90s",
+    genre: "dance",
+    entries: [],
+    selected: new Set(), // Set di rank (int)
+    fetching: false,
+  };
+
+  function setStatus(text, kind) {
+    const el = $("#charts-status");
+    if (!el) return;
+    el.textContent = text || "";
+    el.className = "beatport-status" + (kind ? " " + kind : "");
+  }
+
+  function _showFiltersFor(source) {
+    const map = {
+      itunes: "#charts-filters-itunes",
+      spotify: "#charts-filters-spotify",
+      m2o: "#charts-filters-m2o",
+      lastfm: "#charts-filters-lastfm",
+    };
+    Object.values(map).forEach((sel) => {
+      const el = $(sel);
+      if (el) el.hidden = true;
+    });
+    const activeEl = $(map[source]);
+    if (activeEl) activeEl.hidden = false;
+  }
+
+  function _updateSelectedCount() {
+    const n = cs.selected.size;
+    const cnt = $("#charts-selected-count");
+    if (cnt) {
+      cnt.textContent = n === 1
+        ? "1 brano selezionato"
+        : `${n} brani selezionati`;
+    }
+    const btn = $("#charts-add-queue-btn");
+    if (btn) {
+      btn.disabled = n === 0 || cs.fetching;
+      const suffix = n > 0
+        ? ` Aggiungi ${n} alla coda Scarica`
+        : " Aggiungi alla coda Scarica";
+      btn.innerHTML = `<span class="ico">➕</span>${suffix}`;
+    }
+    const bar = $("#charts-footer-bar");
+    if (bar) bar.hidden = cs.entries.length === 0;
+  }
+
+  function _updateSummary() {
+    const line = $("#charts-summary-line");
+    if (!line) return;
+    const n = cs.entries.length;
+    if (n === 0) {
+      line.textContent = "";
+      return;
+    }
+    const labelBySource = {
+      itunes: "iTunes",
+      spotify: "Spotify Charts",
+      m2o: "M2O Chart",
+      lastfm: "Last.fm",
+    };
+    const src = labelBySource[cs.source] || cs.source;
+    line.textContent = `${n} brani da ${src}`;
+  }
+
+  function _fmtPopularity(entry) {
+    if (entry.popularity === null || entry.popularity === undefined || entry.popularity === "") {
+      return String(entry.rank || "—");
+    }
+    const n = Number(entry.popularity);
+    if (!isFinite(n)) return String(entry.popularity);
+    if (n >= 1000) {
+      // Formatta grandi numeri con separatore
+      return n.toLocaleString();
+    }
+    return String(n);
+  }
+
+  function _renderRow(entry) {
+    const tr = document.createElement("tr");
+    tr.dataset.rank = String(entry.rank);
+
+    // Checkbox
+    const tdCheck = document.createElement("td");
+    tdCheck.className = "charts-col-check";
+    const cb = document.createElement("input");
+    cb.type = "checkbox";
+    cb.className = "charts-check";
+    cb.checked = cs.selected.has(entry.rank);
+    cb.addEventListener("change", () => {
+      if (cb.checked) cs.selected.add(entry.rank);
+      else cs.selected.delete(entry.rank);
+      _updateSelectedCount();
+    });
+    tdCheck.appendChild(cb);
+    tr.appendChild(tdCheck);
+
+    // Rank
+    const tdRank = document.createElement("td");
+    tdRank.className = "charts-col-rank";
+    tdRank.textContent = String(entry.rank || "—");
+    tr.appendChild(tdRank);
+
+    // Artist
+    const tdArtist = document.createElement("td");
+    tdArtist.className = "charts-col-artist";
+    tdArtist.textContent = entry.artist || "—";
+    tdArtist.title = entry.artist || "";
+    tr.appendChild(tdArtist);
+
+    // Title
+    const tdTitle = document.createElement("td");
+    tdTitle.className = "charts-col-title";
+    tdTitle.textContent = entry.title || "—";
+    tdTitle.title = entry.title || "";
+    tr.appendChild(tdTitle);
+
+    // Album
+    const tdAlbum = document.createElement("td");
+    tdAlbum.className = "charts-col-album";
+    tdAlbum.textContent = entry.album || "—";
+    tdAlbum.title = entry.album || "";
+    tr.appendChild(tdAlbum);
+
+    // Popularity
+    const tdPop = document.createElement("td");
+    tdPop.className = "charts-col-pop";
+    tdPop.textContent = _fmtPopularity(entry);
+    tr.appendChild(tdPop);
+
+    return tr;
+  }
+
+  function _renderTable() {
+    const body = $("#charts-table-body");
+    const card = $("#charts-results-card");
+    if (!body || !card) return;
+    body.innerHTML = "";
+    if (cs.entries.length === 0) {
+      card.hidden = true;
+      const bar = $("#charts-footer-bar");
+      if (bar) bar.hidden = true;
+      return;
+    }
+    for (const entry of cs.entries) {
+      body.appendChild(_renderRow(entry));
+    }
+    card.hidden = false;
+    _updateSummary();
+    _updateSelectedCount();
+  }
+
+  function _params() {
+    if (cs.source === "itunes") return { country: cs.country };
+    if (cs.source === "spotify") return { playlist_key: cs.playlist };
+    if (cs.source === "m2o") return {};
+    if (cs.source === "lastfm") return { decade: cs.decade, genre: cs.genre };
+    return {};
+  }
+
+  async function doFetch() {
+    if (cs.fetching) return;
+    cs.fetching = true;
+    cs.entries = [];
+    cs.selected.clear();
+    _renderTable();
+
+    const btn = $("#charts-fetch-btn");
+    if (btn) btn.disabled = true;
+    setStatus("Caricamento classifica…", "loading");
+
+    const force = $("#charts-force")?.checked || false;
+    const payload = { source: cs.source, force, ...(_params()) };
+
+    let res;
+    try {
+      res = await window.pywebview.api.charts_fetch(payload);
+    } catch (e) {
+      setStatus("Errore: " + ((e && e.message) || e), "error");
+      cs.fetching = false;
+      if (btn) btn.disabled = false;
+      return;
+    }
+    cs.fetching = false;
+    if (btn) btn.disabled = false;
+
+    if (!res || !res.ok) {
+      const msg = (res && res.error) || "Impossibile caricare la classifica";
+      setStatus(msg, "error");
+      toast(msg, "error");
+      return;
+    }
+
+    cs.entries = Array.isArray(res.entries) ? res.entries : [];
+    _renderTable();
+
+    if (cs.entries.length === 0) {
+      setStatus("Nessun risultato. Prova a cambiare filtri o sorgente.", "ok");
+    } else {
+      setStatus(`${cs.entries.length} brani ricevuti`, "ok");
+    }
+  }
+
+  async function addToQueue() {
+    if (cs.selected.size === 0) return;
+    const rankSet = cs.selected;
+    const selectedEntries = cs.entries
+      .filter((e) => rankSet.has(e.rank))
+      .map((e) => ({ artist: e.artist, title: e.title }));
+    if (selectedEntries.length === 0) return;
+
+    let res;
+    try {
+      res = await window.pywebview.api.charts_add_to_queue(selectedEntries);
+    } catch (e) {
+      toast("Errore: " + ((e && e.message) || e), "error");
+      return;
+    }
+    if (!res || !res.ok) {
+      toast((res && res.error) || "Errore aggiunta", "error");
+      return;
+    }
+    // Il bridge emette `charts:add_to_queue` che poi popola la tab Scarica.
+    // Reset selezione qui.
+    cs.selected.clear();
+    // Deseleziona checkbox visibili
+    $$("#charts-table-body .charts-check").forEach((cb) => { cb.checked = false; });
+    const master = $("#charts-select-all");
+    if (master) master.checked = false;
+    _updateSelectedCount();
+  }
+
+  function _selectAll(on) {
+    cs.selected.clear();
+    if (on) {
+      for (const e of cs.entries) cs.selected.add(e.rank);
+    }
+    $$("#charts-table-body .charts-check").forEach((cb) => { cb.checked = on; });
+    const master = $("#charts-select-all");
+    if (master) master.checked = on;
+    _updateSelectedCount();
+  }
+
+  async function init() {
+    // Ripristina scelta da config
+    const cfg = state.config || {};
+    cs.source = cfg.charts_last_source || "itunes";
+    cs.country = cfg.charts_itunes_country || "it";
+    cs.playlist = cfg.charts_spotify_playlist || "top50_global";
+    cs.decade = cfg.charts_lastfm_decade || "90s";
+    cs.genre = cfg.charts_lastfm_genre || "dance";
+
+    // Applica valori ai controlli
+    const radio = document.querySelector(`input[name="charts-source"][value="${cs.source}"]`);
+    if (radio) radio.checked = true;
+    else {
+      // Fallback: seleziona iTunes
+      const fallback = document.querySelector('input[name="charts-source"][value="itunes"]');
+      if (fallback) fallback.checked = true;
+      cs.source = "itunes";
+    }
+    _showFiltersFor(cs.source);
+
+    if ($("#charts-itunes-country")) $("#charts-itunes-country").value = cs.country;
+    if ($("#charts-spotify-playlist")) $("#charts-spotify-playlist").value = cs.playlist;
+    if ($("#charts-lastfm-decade")) $("#charts-lastfm-decade").value = cs.decade;
+    if ($("#charts-lastfm-genre")) $("#charts-lastfm-genre").value = cs.genre;
+
+    // Bind eventi source radio
+    document.querySelectorAll('input[name="charts-source"]').forEach((r) => {
+      r.addEventListener("change", () => {
+        if (!r.checked) return;
+        cs.source = r.value;
+        _showFiltersFor(cs.source);
+      });
+    });
+
+    // Bind filtri
+    $("#charts-itunes-country")?.addEventListener("change", (e) => {
+      cs.country = e.target.value;
+    });
+    $("#charts-spotify-playlist")?.addEventListener("change", (e) => {
+      cs.playlist = e.target.value;
+    });
+    $("#charts-lastfm-decade")?.addEventListener("change", (e) => {
+      cs.decade = e.target.value;
+    });
+    $("#charts-lastfm-genre")?.addEventListener("change", (e) => {
+      cs.genre = e.target.value;
+    });
+
+    // Fetch, seleziona, aggiungi
+    $("#charts-fetch-btn")?.addEventListener("click", doFetch);
+    $("#charts-add-queue-btn")?.addEventListener("click", addToQueue);
+    $("#charts-select-all-btn")?.addEventListener("click", () => _selectAll(true));
+    $("#charts-deselect-all-btn")?.addEventListener("click", () => _selectAll(false));
+    $("#charts-select-all")?.addEventListener("change", (e) => _selectAll(!!e.target.checked));
+
+    // Bridge handler: quando l'utente aggiunge alla coda, popola la tab Scarica.
+    bridgeHandlers["charts:add_to_queue"] = (p) => {
+      if (!p) return;
+      const tracks = Array.isArray(p.tracks) ? p.tracks : null;
+      const text = typeof p.text === "string" ? p.text : "";
+      const count = Number(p.count) || (tracks ? tracks.length : 0);
+
+      // Popola state.loaded come "tracks" (stesso pattern del "Carica lista")
+      if (tracks && tracks.length) {
+        state.loaded = {
+          ok: true,
+          kind: "tracks",
+          tracks: tracks,
+          count: tracks.length,
+          name: "charts",
+        };
+        // Aggiorna il campo URL e il badge sulla tab Scarica
+        const urlInput = $("#urlInput");
+        if (urlInput) {
+          urlInput.value = "[Charts] " + count + " brani";
+        }
+        const badge = $("#urlListBadge");
+        if (badge) {
+          badge.textContent = `· ${count} tracce`;
+          badge.hidden = false;
+        }
+        appendLog("download", `[INFO] Caricati ${count} brani dalla tab Charts`);
+      } else if (text) {
+        // Fallback: nessun tracks strutturati, usa il testo grezzo
+        const urlInput = $("#urlInput");
+        if (urlInput) {
+          urlInput.value = urlInput.value ? urlInput.value + "\n" + text : text;
+        }
+      }
+
+      // Naviga alla tab Scarica
+      showView("download");
+      toast(`${count} brani aggiunti alla coda Scarica`, "success");
+    };
+
+    _updateSelectedCount();
+  }
+
+  return { init };
+})();
+
+// ============================================================
+// RoyaltyUI — verifica royalty-free (ccMixter + Jamendo)
+// ============================================================
+const RoyaltyUI = (() => {
+  const rstate = {
+    folder: "",
+    recursive: true,
+    scanning: false,
+    // Map path -> entry
+    entries: new Map(),
+  };
+
+  function setStatus(text, kind) {
+    const el = $("#royalty-status");
+    if (!el) return;
+    el.textContent = text || "";
+    el.className = "beatport-status" + (kind ? " " + kind : "");
+  }
+
+  function _statusBadge(entry) {
+    const s = entry.status || "";
+    if (s === "royalty_free") {
+      return `<span class="royalty-badge royalty-badge-rf">🟢 Royalty-free</span>`;
+    }
+    if (s === "error") {
+      const err = entry.error ? ` title="${_escapeHtml(entry.error)}"` : "";
+      return `<span class="royalty-badge royalty-badge-error"${err}>🔴 Errore</span>`;
+    }
+    return `<span class="royalty-badge royalty-badge-unknown">⚪ Non trovato</span>`;
+  }
+
+  function _matchCell(entry) {
+    const matches = entry.matches || [];
+    if (!matches.length) {
+      if (entry.status === "error") {
+        return `<span class="royalty-match-cell" style="color:var(--red);">${_escapeHtml(entry.error || "errore")}</span>`;
+      }
+      return `<span class="royalty-match-cell" style="color:var(--text-3);">—</span>`;
+    }
+    const m = matches[0];
+    const src = _escapeHtml(m.source || "?");
+    const lic = _escapeHtml(m.license || "Creative Commons");
+    const url = m.url || "";
+    const licUrl = m.license_url || "";
+    const score = (typeof m.score === "number")
+      ? `<span class="royalty-match-score">score ${m.score}</span>`
+      : "";
+    const linkTrack = url
+      ? `<a href="#" data-ext-url="${_escapeHtml(url)}">traccia</a>`
+      : "";
+    const linkLic = licUrl
+      ? `<a href="#" data-ext-url="${_escapeHtml(licUrl)}">${lic}</a>`
+      : lic;
+    const links = [linkTrack, linkLic].filter(Boolean).join(" · ");
+    const extra = matches.length > 1
+      ? `<div style="color:var(--text-3);font-size:11px;margin-top:2px;">+${matches.length - 1} altri match</div>`
+      : "";
+    return `<span class="royalty-match-cell"><span class="royalty-match-source">${src}</span>${links}${score}</span>${extra}`;
+  }
+
+  function _renderRow(entry) {
+    const path = entry.path || "";
+    const tr = document.createElement("tr");
+    tr.dataset.path = path;
+    if (entry.status === "royalty_free") tr.classList.add("royalty-row-rf");
+    else if (entry.status === "error") tr.classList.add("royalty-row-error");
+
+    // File
+    const tdFile = document.createElement("td");
+    tdFile.className = "royalty-col-file";
+    tdFile.innerHTML = `<span class="catalog-file-cell" title="${_escapeHtml(path)}">${_escapeHtml(_basename(path))}</span>`;
+    tr.appendChild(tdFile);
+
+    // Artista
+    const tdArtist = document.createElement("td");
+    tdArtist.className = "royalty-col-artist";
+    tdArtist.textContent = entry.artist || "—";
+    tdArtist.title = entry.artist || "";
+    tr.appendChild(tdArtist);
+
+    // Titolo
+    const tdTitle = document.createElement("td");
+    tdTitle.className = "royalty-col-title";
+    tdTitle.textContent = entry.title || "—";
+    tdTitle.title = entry.title || "";
+    tr.appendChild(tdTitle);
+
+    // Stato
+    const tdStatus = document.createElement("td");
+    tdStatus.className = "royalty-col-status";
+    tdStatus.innerHTML = _statusBadge(entry);
+    tr.appendChild(tdStatus);
+
+    // Match / licenza
+    const tdMatch = document.createElement("td");
+    tdMatch.className = "royalty-col-match";
+    tdMatch.innerHTML = _matchCell(entry);
+    tr.appendChild(tdMatch);
+
+    return tr;
+  }
+
+  function _updateSummary() {
+    const line = $("#royalty-summary-line");
+    const card = $("#royalty-summary-card");
+    if (!line || !card) return;
+    const n = rstate.entries.size;
+    if (n === 0) { card.hidden = true; return; }
+    let rf = 0, unk = 0, errs = 0;
+    rstate.entries.forEach((e) => {
+      if (e.status === "royalty_free") rf++;
+      else if (e.status === "error") errs++;
+      else unk++;
+    });
+    line.textContent =
+      `${n} file · ${rf} royalty-free · ${unk} da verificare · ${errs} errori`;
+    card.hidden = false;
+
+    const foot = $("#royalty-footer-bar");
+    const cnt = $("#royalty-footer-count");
+    const exp = $("#royalty-export-csv");
+    if (foot) foot.hidden = false;
+    if (cnt) cnt.textContent = `${n} file analizzati`;
+    if (exp) exp.disabled = n === 0;
+  }
+
+  function _upsertEntry(entry) {
+    if (!entry || !entry.path) return;
+    const body = $("#royalty-table-body");
+    if (!body) return;
+    const existed = rstate.entries.has(entry.path);
+    rstate.entries.set(entry.path, entry);
+    const row = _renderRow(entry);
+    if (existed) {
+      const old = body.querySelector(`tr[data-path="${CSS.escape(entry.path)}"]`);
+      if (old) body.replaceChild(row, old);
+      else body.appendChild(row);
+    } else {
+      body.appendChild(row);
+    }
+    const wrap = $("#royalty-table-wrap");
+    if (wrap) wrap.hidden = false;
+    _updateSummary();
+  }
+
+  function _clearTable() {
+    const body = $("#royalty-table-body");
+    if (body) body.innerHTML = "";
+    const wrap = $("#royalty-table-wrap");
+    if (wrap) wrap.hidden = true;
+    const card = $("#royalty-summary-card");
+    if (card) card.hidden = true;
+    const foot = $("#royalty-footer-bar");
+    if (foot) foot.hidden = true;
+    const exp = $("#royalty-export-csv");
+    if (exp) exp.disabled = true;
+    rstate.entries.clear();
+  }
+
+  async function pickFolder() {
+    const p = await window.pywebview.api.royalty_pick_folder();
+    if (p && typeof p === "string") {
+      rstate.folder = p;
+      $("#royalty-path-display").textContent = p;
+      $("#royalty-start-btn").disabled = false;
+      setStatus("", "");
+    }
+  }
+
+  async function startScan() {
+    if (!rstate.folder) return;
+    rstate.recursive = $("#royalty-recursive").checked;
+    rstate.scanning = true;
+    _clearTable();
+    $("#royalty-start-btn").disabled = true;
+    $("#royalty-pick-folder").disabled = true;
+    $("#royalty-stop-btn").hidden = false;
+    $("#royalty-log").innerHTML = "";
+    $("#royaltyProgressFill").style.width = "0%";
+    $("#royaltyPercent").textContent = "0%";
+    $("#royaltyCounter").textContent = "Analisi in corso…";
+    setStatus("Analisi in corso...", "loading");
+
+    let res;
+    try {
+      res = await window.pywebview.api.royalty_start_scan({
+        directory: rstate.folder,
+        recursive: rstate.recursive,
+      });
+    } catch (e) {
+      setStatus("Errore avvio: " + ((e && e.message) || e), "error");
+      finishScan();
+      return;
+    }
+    if (!res || !res.ok) {
+      const msg = (res && res.error) || "Impossibile avviare l'analisi";
+      setStatus(msg, "error");
+      if (!handleGateBlock(res || {})) toast(msg, "error");
+      finishScan();
+    }
+  }
+
+  async function stopScan() {
+    try { await window.pywebview.api.royalty_stop_scan(); } catch (e) { console.error(e); }
+  }
+
+  function finishScan() {
+    rstate.scanning = false;
+    $("#royalty-start-btn").disabled = !rstate.folder;
+    $("#royalty-pick-folder").disabled = false;
+    $("#royalty-stop-btn").hidden = true;
+  }
+
+  function _csvEscape(s) {
+    const str = (s == null) ? "" : String(s);
+    if (/[",\n;]/.test(str)) {
+      return `"${str.replace(/"/g, '""')}"`;
+    }
+    return str;
+  }
+
+  function exportCsv() {
+    if (rstate.entries.size === 0) return;
+    const rows = [["file", "artista", "titolo", "stato", "sorgente", "licenza", "licenza_url", "track_url", "score"]];
+    rstate.entries.forEach((e) => {
+      const m = (e.matches && e.matches[0]) || {};
+      rows.push([
+        _basename(e.path || ""),
+        e.artist || "",
+        e.title || "",
+        e.status || "",
+        m.source || "",
+        m.license || "",
+        m.license_url || "",
+        m.url || "",
+        (typeof m.score === "number") ? m.score : "",
+      ]);
+    });
+    const csv = rows.map((r) => r.map(_csvEscape).join(",")).join("\n");
+    const blob = new Blob([csv], { type: "text/csv;charset=utf-8" });
+    const url = window.URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = `royalty_report_${Date.now()}.csv`;
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    setTimeout(() => window.URL.revokeObjectURL(url), 1500);
+    toast("CSV esportato", "success");
+  }
+
+  async function init() {
+    $("#royalty-pick-folder").addEventListener("click", pickFolder);
+    $("#royalty-start-btn").addEventListener("click", startScan);
+    $("#royalty-stop-btn").addEventListener("click", stopScan);
+    $("#royalty-export-csv").addEventListener("click", exportCsv);
+    $("#royalty-recursive").addEventListener("change", (e) => {
+      rstate.recursive = e.target.checked;
+    });
+
+    // Delegazione: link "traccia" / licenza aprono in browser esterno
+    const body = $("#royalty-table-body");
+    if (body) {
+      body.addEventListener("click", (ev) => {
+        const a = ev.target && ev.target.closest("a[data-ext-url]");
+        if (!a) return;
+        ev.preventDefault();
+        const u = a.getAttribute("data-ext-url");
+        if (u && window.pywebview && window.pywebview.api
+            && window.pywebview.api.open_external_url) {
+          window.pywebview.api.open_external_url(u);
+        }
+      });
+    }
+
+    // Ripristina ultimo state da config
+    const cfg = state.config || {};
+    if (cfg.royalty_last_folder) {
+      rstate.folder = cfg.royalty_last_folder;
+      $("#royalty-path-display").textContent = cfg.royalty_last_folder;
+      $("#royalty-start-btn").disabled = false;
+    }
+    if (typeof cfg.royalty_recursive === "boolean") {
+      $("#royalty-recursive").checked = cfg.royalty_recursive;
+      rstate.recursive = cfg.royalty_recursive;
+    }
+
+    // Bridge handlers
+    bridgeHandlers["royalty:progress"] = (p) => {
+      if (!p) return;
+      if (typeof p.overall === "number") {
+        const pct = Math.round(p.overall * 100);
+        $("#royaltyProgressFill").style.width = pct + "%";
+        $("#royaltyPercent").textContent = pct + "%";
+      }
+      if (typeof p.idx === "number" && typeof p.total === "number" && p.total > 0) {
+        const s = p.status || "";
+        let label;
+        if (s === "checking") label = `File ${p.idx}/${p.total} · verifica`;
+        else if (s === "completed") label = `Completato: ${p.total} file`;
+        else if (s === "stopped") label = "Interrotta";
+        else if (s === "error") label = `File ${p.idx}/${p.total} · errore`;
+        else label = `File ${p.idx}/${p.total}`;
+        $("#royaltyCounter").textContent = label;
+      }
+    };
+
+    bridgeHandlers["royalty:entry"] = (entry) => {
+      _upsertEntry(entry);
+      setStatus(`Elaborati ${rstate.entries.size} file...`, "loading");
+    };
+
+    bridgeHandlers["royalty:done"] = (p) => {
+      if (rstate.entries.size === 0 && p && Array.isArray(p.entries)) {
+        p.entries.forEach(_upsertEntry);
+      }
+      if (p && p.ok === false) {
+        setStatus(p.error || "Errore analisi", "error");
+      } else if (rstate.entries.size === 0) {
+        setStatus("Nessun file audio trovato", "ok");
+      } else {
+        const rf = (p && p.royalty_free_count) || 0;
+        const tot = (p && p.total) || rstate.entries.size;
+        setStatus(`Analisi completata · ${rf}/${tot} royalty-free`, "ok");
+      }
+      finishScan();
+    };
+  }
+
+  return { init };
+})();
+
 // ============================================================
 // Boot
 // ============================================================