Files
musicdownload/core/upgrader.py
T
luzadevandClaude Opus 4.7 8c06a26ddb Initial commit: MusicDownload con UI pywebview
- Frontend HTML/CSS/JS in webui/ (stile Spotify-like, hero gradient, modal blur)
- API bridge JS<->Python in api/bridge.py
- Core invariato: downloader yt-dlp, upgrader, spotify client, config
- Build scripts macOS (WebKit) e Windows (EdgeChromium)
- .gitignore esclude credenziali (config.json, cookies.txt) e artefatti build

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-30 12:48:58 +02:00

360 lines
11 KiB
Python

"""Logica upgrade qualita audio — riscrittura di upgrade_quality.sh."""
from __future__ import annotations
import json
import re
import subprocess
import threading
from pathlib import Path
from typing import Callable, Optional
from core.paths import find_ytdlp, find_ffmpeg_dir, find_ffprobe
AUDIO_EXTENSIONS = {".mp3", ".m4a", ".wav", ".flac"}
# Flag globale per interruzione
_stop_event = threading.Event()
_current_process: Optional[subprocess.Popen] = None
_process_lock = threading.Lock()
def request_stop():
_stop_event.set()
with _process_lock:
if _current_process and _current_process.poll() is None:
_current_process.terminate()
def reset_stop():
_stop_event.clear()
def is_stopped() -> bool:
return _stop_event.is_set()
def scan_audio_files(directory: str, recursive: bool = False) -> list[Path]:
"""Trova file audio nella directory."""
base = Path(directory)
files = []
if recursive:
for ext in AUDIO_EXTENSIONS:
files.extend(base.rglob(f"*{ext}"))
else:
for ext in AUDIO_EXTENSIONS:
files.extend(base.glob(f"*{ext}"))
return sorted(files)
def get_bitrate(filepath: str | Path) -> int:
"""Ritorna il bitrate in kbps tramite ffprobe. Ritorna 0 in caso di errore."""
try:
ffprobe_bin = find_ffprobe() or "ffprobe"
result = subprocess.run(
[
ffprobe_bin, "-v", "quiet",
"-print_format", "json",
"-show_format",
str(filepath),
],
capture_output=True,
text=True,
timeout=30,
)
data = json.loads(result.stdout)
bit_rate = int(data.get("format", {}).get("bit_rate", 0))
return bit_rate // 1000
except Exception:
return 0
def _load_done_set(done_file: Path) -> set[str]:
if done_file.exists():
return set(done_file.read_text(encoding="utf-8").splitlines())
return set()
def _mark_done(done_file: Path, filename: str) -> None:
with open(done_file, "a", encoding="utf-8") as f:
f.write(filename + "\n")
def _search_youtube(query: str, cookies_path: Optional[str] = None) -> str:
"""Cerca un video su YouTube e ritorna l'URL."""
ytdlp = find_ytdlp()
cmd = [
ytdlp,
f"ytsearch1:{query}",
"--dump-json",
"--no-download",
"--no-warnings",
"--flat-playlist",
]
if cookies_path and Path(cookies_path).exists():
cmd.extend(["--cookies", cookies_path])
result = subprocess.run(cmd, capture_output=True, text=True, timeout=30)
if result.returncode != 0:
raise ValueError("Ricerca fallita")
data = json.loads(result.stdout)
video_id = data.get("id", "")
if not video_id:
raise ValueError("Nessun risultato")
return f"https://www.youtube.com/watch?v={video_id}"
def update_cover_only(
filepath: Path,
video_url: str,
temp_dir: Path,
cookies_path: Optional[str] = None,
) -> bool:
"""Aggiorna solo la copertina di un file audio. Ritorna True se riuscito."""
ytdlp = find_ytdlp()
cmd = [
ytdlp,
"--skip-download",
"--write-thumbnail",
"--convert-thumbnails", "jpg",
"--no-warnings",
"--output", str(temp_dir / "cover"),
video_url,
]
ffmpeg_dir = _find_ffmpeg_dir()
if ffmpeg_dir:
cmd.extend(["--ffmpeg-location", ffmpeg_dir])
if cookies_path and Path(cookies_path).exists():
cmd.extend(["--cookies", cookies_path])
subprocess.run(cmd, capture_output=True, timeout=60)
cover_files = list(temp_dir.glob("cover*.jpg"))
if not cover_files:
return False
cover_file = cover_files[0]
temp_output = temp_dir / "temp_output.mp3"
try:
subprocess.run(
[
"ffmpeg", "-y",
"-i", str(filepath),
"-i", str(cover_file),
"-map", "0:a", "-map", "1:0",
"-c:a", "copy",
"-id3v2_version", "3",
"-metadata:s:v", "title=Album cover",
"-metadata:s:v", "comment=Cover (front)",
str(temp_output),
],
capture_output=True,
timeout=60,
)
except Exception:
_cleanup_temp(temp_dir)
return False
if temp_output.exists():
temp_output.replace(filepath)
_cleanup_temp(temp_dir)
return True
_cleanup_temp(temp_dir)
return False
def _cleanup_temp(temp_dir: Path) -> None:
for pattern in ("*.jpg", "*.webp", "*.mp3", "*.webm", "*.m4a"):
for f in temp_dir.glob(pattern):
f.unlink(missing_ok=True)
def upgrade_folder(
directory: str,
threshold: int = 310,
cookies_path: Optional[str] = None,
recursive: bool = False,
progress_callback: Optional[Callable] = None,
) -> None:
"""Logica principale di upgrade qualita."""
reset_stop()
ytdlp = find_ytdlp()
if recursive:
base = Path(directory)
folders = set()
for ext in AUDIO_EXTENSIONS:
for f in base.rglob(f"*{ext}"):
folders.add(f.parent)
folders = sorted(folders)
else:
folders = [Path(directory)]
all_items: list[tuple[Path, Path]] = []
for folder in folders:
for ext in AUDIO_EXTENSIONS:
for f in sorted(folder.glob(f"*{ext}")):
all_items.append((f, folder))
total = len(all_items)
if total == 0:
if progress_callback:
progress_callback(0, 0, "", "no_files", 0, 0)
return
processed = 0
for filepath, folder in all_items:
if is_stopped():
if progress_callback:
progress_callback(processed, total, "", "stopped", 0, 0)
return
done_file = folder / ".upgraded_tracks"
temp_dir = folder / ".temp_download"
temp_dir.mkdir(exist_ok=True)
done_set = _load_done_set(done_file)
filename = filepath.stem
if filename in done_set:
processed += 1
if progress_callback:
progress_callback(processed, total, filepath.name, "skipped", 0, 0)
continue
current_kbps = get_bitrate(filepath)
if progress_callback:
progress_callback(processed, total, filepath.name, "searching", current_kbps, 0)
query = filename
try:
video_url = _search_youtube(query, cookies_path)
except Exception:
_mark_done(done_file, filename)
processed += 1
if progress_callback:
progress_callback(processed, total, filepath.name, "not_found", current_kbps, 0)
continue
if is_stopped():
return
# Se qualita gia alta, aggiorna solo copertina
if current_kbps >= threshold:
if progress_callback:
progress_callback(processed, total, filepath.name, "cover_only", current_kbps, 0)
success = update_cover_only(filepath, video_url, temp_dir, cookies_path)
_mark_done(done_file, filename)
processed += 1
status = "cover_done" if success else "cover_failed"
if progress_callback:
progress_callback(processed, total, filepath.name, status, current_kbps, current_kbps)
continue
# Scarica versione HQ
if progress_callback:
progress_callback(processed, total, filepath.name, "downloading", current_kbps, 0)
cmd = [
ytdlp,
"--extract-audio",
"--audio-format", "mp3",
"--audio-quality", "0",
"--embed-thumbnail",
"--add-metadata",
"--no-warnings",
"--newline",
"--output", str(temp_dir / "%(title)s.%(ext)s"),
video_url,
]
ffmpeg_dir = find_ffmpeg_dir()
if ffmpeg_dir:
cmd.extend(["--ffmpeg-location", ffmpeg_dir])
if cookies_path and Path(cookies_path).exists():
cmd.extend(["--cookies", cookies_path])
try:
with _process_lock:
_current_process = subprocess.Popen(
cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True,
)
for line in _current_process.stdout:
if is_stopped():
_current_process.terminate()
return
pct_match = re.search(r"(\d+(?:\.\d+)?)%", line)
if pct_match and progress_callback:
pct = int(float(pct_match.group(1)))
progress_callback(processed, total, filepath.name, "downloading", current_kbps, pct)
_current_process.wait()
with _process_lock:
_current_process = None
except Exception:
with _process_lock:
_current_process = None
_mark_done(done_file, filename)
processed += 1
if progress_callback:
progress_callback(processed, total, filepath.name, "download_error", current_kbps, 0)
_cleanup_temp(temp_dir)
continue
# Trova il file scaricato
new_files = list(temp_dir.glob("*.mp3"))
if not new_files:
_mark_done(done_file, filename)
processed += 1
if progress_callback:
progress_callback(processed, total, filepath.name, "download_error", current_kbps, 0)
_cleanup_temp(temp_dir)
continue
newest = max(new_files, key=lambda p: p.stat().st_mtime)
new_kbps = get_bitrate(newest)
filepath.unlink()
newest.replace(filepath.parent / f"{filename}.mp3")
_mark_done(done_file, filename)
_cleanup_temp(temp_dir)
processed += 1
if progress_callback:
progress_callback(processed, total, filepath.name, "upgraded", current_kbps, new_kbps)
for folder in folders:
td = folder / ".temp_download"
if td.exists():
try:
td.rmdir()
except OSError:
pass
if progress_callback and not is_stopped():
progress_callback(total, total, "", "completed", 0, 0)
def count_files_info(directory: str, recursive: bool = False) -> tuple[int, int]:
"""Ritorna (total_audio_files, already_upgraded)."""
files = scan_audio_files(directory, recursive)
total = len(files)
already_done = 0
for f in files:
done_file = f.parent / ".upgraded_tracks"
done_set = _load_done_set(done_file)
if f.stem in done_set:
already_done += 1
return total, already_done