KaraokeVideoDownloader/karaoke_downloader/downloader.py

1064 lines
43 KiB
Python

import hashlib
import logging
import os
import re
import sys
import json
import subprocess
from datetime import datetime, timedelta
from pathlib import Path
from typing import Any, Dict, List, Optional, Tuple
from karaoke_downloader.cache_manager import (
delete_plan_cache,
get_download_plan_cache_file,
load_cached_plan,
save_plan_cache,
)
from karaoke_downloader.channel_manager import (
download_from_file,
reset_channel_downloads,
)
from karaoke_downloader.config_manager import get_config_manager, load_config
from karaoke_downloader.download_pipeline import DownloadPipeline
from karaoke_downloader.download_planner import build_download_plan
from karaoke_downloader.error_utils import handle_yt_dlp_error, log_error
from karaoke_downloader.file_utils import ensure_directory_exists, sanitize_filename
from karaoke_downloader.fuzzy_matcher import (
create_song_key,
create_video_key,
get_similarity_function,
is_exact_match,
is_fuzzy_match,
)
from karaoke_downloader.id3_utils import add_id3_tags
from karaoke_downloader.channel_parser import ChannelParser
from karaoke_downloader.server_manager import (
check_and_mark_server_duplicate,
is_song_marked_as_server_duplicate,
is_song_on_server,
load_server_duplicates_tracking,
load_server_songs,
)
from karaoke_downloader.song_validator import create_song_validator
from karaoke_downloader.songlist_manager import (
is_songlist_song_downloaded,
load_songlist,
load_songlist_tracking,
mark_songlist_song_downloaded,
normalize_title,
save_songlist_tracking,
)
from karaoke_downloader.tracking_manager import FormatType, SongStatus, TrackingManager
from karaoke_downloader.video_downloader import (
download_video_and_track,
execute_download_plan,
is_valid_mp4,
cleanup_cache,
)
from karaoke_downloader.parallel_downloader import (
ParallelDownloader,
DownloadTask,
create_parallel_downloader,
)
from karaoke_downloader.youtube_utils import get_channel_info, get_playlist_info
# Constants
DEFAULT_FUZZY_THRESHOLD = 85
DEFAULT_CACHE_EXPIRATION_DAYS = 1
DEFAULT_DISPLAY_LIMIT = 10
DATA_DIR = Path("data")
class KaraokeDownloader:
def __init__(self):
# Load configuration
self.config_manager = get_config_manager()
self.config = self.config_manager.load_config()
# Initialize paths
self.yt_dlp_path = Path(self.config.yt_dlp_path)
self.downloads_dir = Path(self.config.folder_structure.downloads_dir)
self.logs_dir = Path(self.config.folder_structure.logs_dir)
# Ensure directories exist
ensure_directory_exists(self.downloads_dir)
ensure_directory_exists(self.logs_dir)
# Initialize tracking
tracking_file = DATA_DIR / "karaoke_tracking.json"
cache_dir = DATA_DIR / "channel_cache"
self.tracker = TrackingManager(
tracking_file=tracking_file, cache_dir=cache_dir
)
# Initialize song validator
self.song_validator = create_song_validator(self.tracker, self.downloads_dir)
# Load songlist tracking
self.songlist_tracking_file = DATA_DIR / "songlist_tracking.json"
self.songlist_tracking = load_songlist_tracking(
str(self.songlist_tracking_file)
)
# Load server songs for availability checking
self.server_songs = load_server_songs()
# Initialize channel parser for title parsing
self.channel_parser = ChannelParser()
# Parallel download settings
self.enable_parallel_downloads = False
self.parallel_workers = 3
# Songlist focus mode attributes
self.songlist_focus_titles = None
self.songlist_only = False
self.use_songlist_priority = True
self.download_limit = None
self.force_download = False
self.songlist_file_path = "data/songList.json" # Default songlist file path
def _load_config(self):
"""Load configuration using the config manager."""
return self.config_manager.load_config()
def _should_skip_song(
self,
artist,
title,
channel_name,
video_id,
video_title,
server_songs=None,
server_duplicates_tracking=None,
):
"""
Check if a song should be skipped using the centralized SongValidator.
Returns:
tuple: (should_skip, reason, total_filtered)
"""
return self.song_validator.should_skip_song(
artist,
title,
channel_name,
video_id,
video_title,
server_songs,
server_duplicates_tracking,
self.force_download,
)
def _mark_song_failed(self, artist, title, video_id, channel_name, error_message):
"""
Mark a song as failed in tracking using the SongValidator.
"""
self.song_validator.mark_song_failed(
artist, title, video_id, channel_name, error_message
)
def _handle_download_failure(
self, artist, title, video_id, channel_name, error_type, error_details=""
):
"""
Handle download failures using the SongValidator.
Args:
artist: Song artist
title: Song title
video_id: YouTube video ID
channel_name: Channel name
error_type: Type of error (e.g., "yt-dlp failed", "file verification failed")
error_details: Additional error details
"""
self.song_validator.handle_download_failure(
artist, title, video_id, channel_name, error_type, error_details
)
def download_channel_videos(
self,
url,
force_refresh=False,
fuzzy_match=False,
fuzzy_threshold=DEFAULT_FUZZY_THRESHOLD,
):
"""Download videos from a channel or playlist URL, respecting songlist-only and limit flags. Supports fuzzy matching."""
channel_name, channel_id = get_channel_info(url)
print(f"\n🎬 Downloading from channel: {channel_name} ({url})")
songlist = load_songlist(self.songlist_file_path)
if not songlist:
print("⚠️ No songlist loaded. Skipping.")
return False
# Load server songs and duplicates tracking for availability checking
server_songs = load_server_songs()
server_duplicates_tracking = load_server_duplicates_tracking()
limit = getattr(self.config, "limit", 1)
cmd = [
str(self.yt_dlp_path),
"--flat-playlist",
"--print",
"%(title)s|%(id)s|%(url)s",
url,
]
try:
result = subprocess.run(cmd, capture_output=True, text=True, check=True)
lines = result.stdout.strip().splitlines()
except subprocess.CalledProcessError as e:
print(f"❌ yt-dlp failed to fetch playlist: {e}")
return False
available_videos = []
for line in lines:
parts = line.split("|")
if len(parts) >= 2:
title, video_id = parts[0].strip(), parts[1].strip()
available_videos.append({"title": title, "id": video_id})
# Normalize songlist for matching
normalized_songlist = {
create_song_key(s["artist"], s["title"]): s for s in songlist
}
matches = []
similarity = get_similarity_function()
for video in available_videos:
artist, title = self.channel_parser.extract_artist_title(video["title"], channel_name)
key = create_song_key(artist, title)
if fuzzy_match:
# Fuzzy match against all songlist keys
best_score = 0
best_song = None
for song_key, song in normalized_songlist.items():
score = similarity(key, song_key)
if score > best_score:
best_score = score
best_song = song
if best_score >= fuzzy_threshold and best_song:
# Check if already downloaded or on server (unless force mode is enabled)
if self.force_download or not is_songlist_song_downloaded(
self.songlist_tracking, best_song["artist"], best_song["title"]
):
# Check if already marked as server duplicate (unless force mode is enabled)
if self.force_download or not is_song_marked_as_server_duplicate(
server_duplicates_tracking,
best_song["artist"],
best_song["title"],
):
# Check if already on server and mark for future skipping (unless force mode is enabled)
if self.force_download or not check_and_mark_server_duplicate(
server_songs,
server_duplicates_tracking,
best_song["artist"],
best_song["title"],
video["title"],
channel_name,
):
matches.append((video, best_song))
print(
f" → Fuzzy match: {artist} - {title} <-> {best_song['artist']} - {best_song['title']} (score: {best_score})"
)
if len(matches) >= limit:
break
else:
if key in normalized_songlist:
song = normalized_songlist[key]
# Check if already downloaded or on server (unless force mode is enabled)
if self.force_download or not is_songlist_song_downloaded(
self.songlist_tracking, song["artist"], song["title"]
):
# Check if already marked as server duplicate (unless force mode is enabled)
if self.force_download or not is_song_marked_as_server_duplicate(
server_duplicates_tracking, song["artist"], song["title"]
):
# Check if already on server and mark for future skipping (unless force mode is enabled)
if self.force_download or not check_and_mark_server_duplicate(
server_songs,
server_duplicates_tracking,
song["artist"],
song["title"],
video["title"],
channel_name,
):
matches.append((video, song))
if len(matches) >= limit:
break
if not matches:
print("🎵 No new songlist matches found for this channel.")
return True
# Download only the first N matches using the new pipeline
pipeline = DownloadPipeline(
yt_dlp_path=str(self.yt_dlp_path),
config=self.config,
downloads_dir=self.downloads_dir,
songlist_tracking=self.songlist_tracking,
tracker=self.tracker,
)
for video, song in matches:
artist, title = song["artist"], song["title"]
print(f"🎵 Processing: {artist} - {title}")
if pipeline.execute_pipeline(
video_id=video["id"],
artist=artist,
title=title,
channel_name=channel_name,
video_title=video.get("title", ""),
):
print(f"✅ Successfully processed: {artist} - {title}")
else:
print(f"❌ Failed to process: {artist} - {title}")
return True
def download_songlist_across_channels(
self,
channel_urls,
limit=None,
force_refresh_download_plan=False,
fuzzy_match=False,
fuzzy_threshold=DEFAULT_FUZZY_THRESHOLD,
force_download=False,
show_pagination=False,
parallel_channels=False,
max_channel_workers=3,
):
"""
Download songs from the songlist across multiple channels.
"""
# Set force download flag
self.force_download = force_download
# Apply songlist focus filtering if specified
if self.songlist_focus_titles:
# Load the raw songlist data to filter by playlist titles
songlist_file = Path(self.songlist_file_path)
if not songlist_file.exists():
print(f"⚠️ Songlist file not found: {self.songlist_file_path}")
return False
try:
with open(songlist_file, "r", encoding="utf-8") as f:
raw_data = json.load(f)
# Filter playlists by title
focused_playlists = []
print(f"🔍 Looking for playlists: {self.songlist_focus_titles}")
print(f"🔍 Available playlists in songList.json:")
for i, playlist in enumerate(raw_data[:5]): # Show first 5 playlists
print(f" {i+1}. '{playlist.get('title', 'NO TITLE')}'")
if len(raw_data) > 5:
print(f" ... and {len(raw_data) - 5} more playlists")
for playlist in raw_data:
playlist_title = playlist.get("title", "")
if playlist_title in self.songlist_focus_titles:
focused_playlists.append(playlist)
print(f"✅ Found matching playlist: '{playlist_title}'")
if not focused_playlists:
print(
f"⚠️ No playlists found matching the specified titles: {', '.join(self.songlist_focus_titles)}"
)
return False
# Flatten the focused playlists into songs
focused_songs = []
seen = set()
for playlist in focused_playlists:
if "songs" in playlist:
for song in playlist["songs"]:
if "artist" in song and "title" in song:
artist = song["artist"].strip()
title = song["title"].strip()
key = f"{artist.lower()}_{title.lower()}"
if key in seen:
continue
seen.add(key)
focused_songs.append(
{
"artist": artist,
"title": title,
"position": song.get("position", 0),
}
)
songlist = focused_songs
print(
f"\n🎯 Songlist focus mode: {len(focused_songs)} songs from {len(focused_playlists)} playlists selected"
)
print(f"🎯 Focused playlists: {', '.join(self.songlist_focus_titles)}")
except (json.JSONDecodeError, FileNotFoundError) as e:
print(f"⚠️ Could not load songlist for filtering from {self.songlist_file_path}: {e}")
return False
else:
# Load songlist normally (flattened from all playlists)
songlist = load_songlist(self.songlist_file_path)
if not songlist:
print("⚠️ No songlist loaded. Skipping.")
return False
# Filter for songs not yet downloaded
if self.force_download:
undownloaded = songlist
print(f"\n🎯 {len(songlist)} total unique songs in songlist.")
print(f"💪 Force mode enabled - will download all songs regardless of existing status")
else:
undownloaded = [
s
for s in songlist
if not is_songlist_song_downloaded(
self.songlist_tracking, s["artist"], s["title"]
)
]
print(f"\n🎯 {len(songlist)} total unique songs in songlist.")
print(f"\n🎯 {len(undownloaded)} unique songlist songs to download.")
# Load server songs and duplicates tracking for availability checking
server_songs = load_server_songs()
server_duplicates_tracking = load_server_duplicates_tracking()
# Initialize counters for logging
server_available_mp4 = 0
server_available_other = 0
marked_duplicates = 0
# Further filter out songs already on server or marked as duplicates
if self.force_download:
not_on_server = undownloaded
print(f"💪 Force mode enabled - will download all songs regardless of server status")
else:
not_on_server = []
for song in undownloaded:
artist, title = song["artist"], song["title"]
# Check if already marked as server duplicate
if is_song_marked_as_server_duplicate(
server_duplicates_tracking, artist, title
):
marked_duplicates += 1
continue
# Check if already on server and mark for future skipping
if check_and_mark_server_duplicate(
server_songs,
server_duplicates_tracking,
artist,
title,
f"{artist} - {title}",
"songlist",
):
server_available_mp4 += 1
continue
# Check if song is on server but in different format (MP3/CDG)
key = f"{artist.lower()}_{normalize_title(title)}"
if key in server_songs:
song_info = server_songs[key]
if song_info.get("is_mp3", False) or song_info.get("is_cdg", False):
server_available_other += 1
print(f"🎵 Found {artist} - {title} on server as {song_info.get('is_mp3', False) and 'MP3' or 'CDG'} format, will download video version")
not_on_server.append(song)
# Apply limit to undownloaded list before logging
# This ensures that only the specified number of songs are processed and logged,
# providing accurate counts when using --limit
if limit is not None:
original_count = len(not_on_server)
not_on_server = not_on_server[:limit]
print(f"\n🎯 Limited to first {limit} songs (was {original_count} total)")
undownloaded = not_on_server
# Now log the counts based on the limited list
if server_available_mp4 > 0:
print(
f"\n🎵 {server_available_mp4} songs already available as MP4 on server, skipping."
)
if server_available_other > 0:
# Only count songs that are in the limited list
limited_server_other = sum(1 for song in not_on_server
if f"{song['artist'].lower()}_{normalize_title(song['title'])}" in server_songs)
if limited_server_other > 0:
print(
f"\n🎵 {limited_server_other} songs found on server as MP3/CDG, will download video versions."
)
if marked_duplicates > 0:
print(
f"\n🏷️ {marked_duplicates} songs previously marked as server duplicates, skipping."
)
print(f"\n🎯 {len(undownloaded)} songs need to be downloaded.")
if not undownloaded:
print("🎵 All songlist songs already downloaded.")
return True
# --- Download plan building (same for both normal and focus modes) ---
# --- Download plan cache logic ---
plan_mode = "songlist"
# Include only parameters that affect the plan generation (exclude limit since it only affects execution)
plan_kwargs = {
"channels": len(channel_urls),
"fuzzy": fuzzy_match,
"threshold": fuzzy_threshold,
}
# Add channel URLs hash to ensure same channels = same cache
channels_hash = hashlib.md5(
"|".join(sorted(channel_urls)).encode()
).hexdigest()[:8]
plan_kwargs["channels_hash"] = channels_hash
cache_file = get_download_plan_cache_file(plan_mode, **plan_kwargs)
use_cache = False
download_plan, unmatched = load_cached_plan(cache_file)
if (
not force_refresh_download_plan
and download_plan is not None
and unmatched is not None
):
use_cache = True
print(f"\n📋 Using cached download plan from: {cache_file}")
if not use_cache:
print(f"\n🔍 Pre-scanning {len(channel_urls)} channels for matches...")
print(f"🔍 Scanning {len(undownloaded)} songs against all channels...")
download_plan, unmatched = build_download_plan(
channel_urls,
undownloaded,
self.tracker,
self.yt_dlp_path,
fuzzy_match=fuzzy_match,
fuzzy_threshold=fuzzy_threshold,
show_pagination=show_pagination,
parallel_channels=parallel_channels,
max_channel_workers=max_channel_workers,
)
save_plan_cache(cache_file, download_plan, unmatched)
print(f"💾 Download plan cached to: {cache_file}")
print(
f"\n📊 Download plan ready: {len(download_plan)} songs will be downloaded."
)
print(f"{len(unmatched)} songs could not be found in any channel.")
if unmatched:
print("Unmatched songs:")
for song in unmatched[:DEFAULT_DISPLAY_LIMIT]:
print(f" - {song['artist']} - {song['title']}")
if len(unmatched) > DEFAULT_DISPLAY_LIMIT:
print(f" ...and {len(unmatched)-DEFAULT_DISPLAY_LIMIT} more.")
# --- Download phase ---
downloaded_count, success = self.execute_download_plan_parallel(
download_plan=download_plan,
unmatched=unmatched,
cache_file=cache_file,
limit=limit,
)
return success
def execute_download_plan_parallel(
self,
download_plan,
unmatched,
cache_file,
limit=None,
):
"""
Execute a download plan using parallel downloads.
Args:
download_plan: List of download items to process
unmatched: List of unmatched songs
cache_file: Path to cache file for progress tracking
limit: Optional limit on number of downloads
Returns:
tuple: (downloaded_count, success)
"""
if not self.enable_parallel_downloads:
# Fall back to sequential downloads
return execute_download_plan(
download_plan=download_plan,
unmatched=unmatched,
cache_file=cache_file,
config=self.config,
yt_dlp_path=self.yt_dlp_path,
downloads_dir=self.downloads_dir,
songlist_tracking=self.songlist_tracking,
limit=limit,
)
# Create parallel downloader
parallel_downloader = create_parallel_downloader(
yt_dlp_path=str(self.yt_dlp_path),
config=self.config,
downloads_dir=self.downloads_dir,
max_workers=self.parallel_workers,
songlist_tracking=self.songlist_tracking,
tracker=self.tracker,
)
# Convert download plan to tasks
tasks = []
total_to_download = limit if limit is not None else len(download_plan)
for idx, item in enumerate(download_plan):
if limit is not None and len(tasks) >= limit:
break
task = DownloadTask(
video_id=item["video_id"],
artist=item["artist"],
title=item["title"],
channel_name=item["channel_name"],
video_title=item.get("video_title"),
priority=len(download_plan) - idx, # Higher priority for earlier items
)
tasks.append(task)
print(f"🚀 Starting parallel downloads with {self.parallel_workers} workers...")
print(f"📋 Total tasks: {len(tasks)}")
# Add all tasks to the parallel downloader
parallel_downloader.add_download_tasks(tasks)
# Execute parallel downloads
results = parallel_downloader.execute_downloads(show_progress=True)
# Process results and update tracking
successful_downloads = 0
for result in results:
if result.success:
successful_downloads += 1
# Remove completed item from plan and update cache
for idx, item in enumerate(download_plan):
if (item["video_id"] == result.task.video_id and
item["artist"] == result.task.artist and
item["title"] == result.task.title):
download_plan.pop(idx)
break
# Update cache after each successful download
save_plan_cache(cache_file, download_plan, unmatched)
print(f"🎉 Parallel downloads completed!")
print(f" ✅ Successful: {successful_downloads}")
print(f" ❌ Failed: {len(results) - successful_downloads}")
# Delete cache if all items are complete
if len(download_plan) == 0:
cleanup_cache(cache_file)
return successful_downloads, True
def execute_latest_per_channel_parallel(
self,
channel_plans,
cache_file,
):
"""
Execute latest-per-channel downloads using parallel processing.
Args:
channel_plans: List of channel plans with videos to download
cache_file: Path to cache file for progress tracking
Returns:
bool: True if successful
"""
if not self.enable_parallel_downloads:
# Fall back to sequential processing
return self._execute_latest_per_channel_sequential(channel_plans, cache_file)
# Create parallel downloader
parallel_downloader = create_parallel_downloader(
yt_dlp_path=str(self.yt_dlp_path),
config=self.config,
downloads_dir=self.downloads_dir,
max_workers=self.parallel_workers,
songlist_tracking=self.songlist_tracking,
tracker=self.tracker,
)
# Convert all videos to tasks
all_tasks = []
task_to_channel_mapping = {} # Map task identifiers to their channel index
for channel_idx, channel_plan in enumerate(channel_plans):
channel_name = channel_plan["channel_name"]
videos = channel_plan["videos"]
for v_idx, video in enumerate(videos):
title = video["title"]
video_id = video["id"]
# Sanitize filename
safe_title = title
invalid_chars = ["?", ":", "*", '"', "<", ">", "|", "/", "\\"]
for char in invalid_chars:
safe_title = safe_title.replace(char, "")
safe_title = (
safe_title.replace("...", "")
.replace("..", "")
.replace(".", "")
.strip()
)
# Extract artist and title for tracking
artist, title_clean = self.channel_parser.extract_artist_title(title, channel_name)
task = DownloadTask(
video_id=video_id,
artist=artist,
title=title_clean,
channel_name=channel_name,
video_title=title,
priority=len(channel_plans) - channel_idx, # Higher priority for earlier channels
)
all_tasks.append(task)
# Use a unique identifier for the mapping
task_id = f"{video_id}_{channel_name}_{title_clean}"
task_to_channel_mapping[task_id] = channel_idx
print(f"🚀 Starting parallel latest-per-channel downloads with {self.parallel_workers} workers...")
print(f"📋 Total tasks: {len(all_tasks)} across {len(channel_plans)} channels")
# Add all tasks to the parallel downloader
parallel_downloader.add_download_tasks(all_tasks)
# Execute parallel downloads
results = parallel_downloader.execute_downloads(show_progress=True)
# Process results and update channel plans
successful_downloads = 0
channel_completion_status = {i: False for i in range(len(channel_plans))}
for result in results:
if result.success:
successful_downloads += 1
# Create the same task identifier used in the mapping
task_id = f"{result.task.video_id}_{result.task.channel_name}_{result.task.title}"
channel_idx = task_to_channel_mapping[task_id]
# Mark this video as completed in the channel plan
channel_plan = channel_plans[channel_idx]
for v_idx, video in enumerate(channel_plan["videos"]):
if (video["id"] == result.task.video_id and
video["title"] == result.task.video_title):
channel_plan["videos"].pop(v_idx)
break
# Check if channel is complete
if len(channel_plan["videos"]) == 0 and not channel_completion_status[channel_idx]:
channel_completion_status[channel_idx] = True
print(f" 🗑️ Channel {result.task.channel_name} completed and removed from plan cache.")
# Update cache with remaining videos
with open(cache_file, "w", encoding="utf-8") as f:
json.dump(
{
"timestamp": datetime.now().isoformat(),
"channel_plans": channel_plans,
},
f,
indent=2,
ensure_ascii=False,
)
print(f"🎉 Parallel latest-per-channel downloads completed!")
print(f" ✅ Successful: {successful_downloads}")
print(f" ❌ Failed: {len(results) - successful_downloads}")
# Delete cache if all channels are complete
all_complete = all(channel_completion_status.values())
if all_complete:
if cache_file.exists():
try:
cache_file.unlink()
print(f"🗑️ Deleted latest-per-channel plan cache after completion: {cache_file.name}")
except Exception as e:
print(f"⚠️ Could not delete latest-per-channel plan cache: {e}")
return True
def _execute_latest_per_channel_sequential(
self,
channel_plans,
cache_file,
):
"""
Execute latest-per-channel downloads sequentially (fallback method).
"""
total_channels = len(channel_plans)
for idx, channel_plan in enumerate(channel_plans):
channel_name = channel_plan["channel_name"]
channel_url = channel_plan["channel_url"]
videos = channel_plan["videos"]
print(
f"\n⬇️ Downloading {len(videos)} videos from channel {idx+1} of {total_channels}: {channel_name}"
)
for v_idx, video in enumerate(videos):
title = video["title"]
video_id = video["id"]
# Sanitize filename
safe_title = title
invalid_chars = ["?", ":", "*", '"', "<", ">", "|", "/", "\\"]
for char in invalid_chars:
safe_title = safe_title.replace(char, "")
safe_title = (
safe_title.replace("...", "")
.replace("..", "")
.replace(".", "")
.strip()
)
filename = f"{channel_name} - {safe_title}.mp4"
# Extract artist and title for tracking
artist, title_clean = self.channel_parser.extract_artist_title(title, channel_name)
print(
f" ({v_idx+1}/{len(videos)}) Processing: {artist} - {title_clean}"
)
# Use the new pipeline for consistent processing
pipeline = DownloadPipeline(
yt_dlp_path=str(self.yt_dlp_path),
config=self.config,
downloads_dir=self.downloads_dir,
songlist_tracking=self.songlist_tracking,
tracker=self.tracker,
)
if pipeline.execute_pipeline(
video_id=video_id,
artist=artist,
title=title_clean,
channel_name=channel_name,
video_title=title,
):
print(f" ✅ Successfully processed: {artist} - {title_clean}")
else:
print(f" ❌ Failed to process: {artist} - {title_clean}")
# After channel is done, remove it from the plan and update cache
channel_plans[idx]["videos"] = []
with open(cache_file, "w", encoding="utf-8") as f:
json.dump(
{
"timestamp": datetime.now().isoformat(),
"channel_plans": channel_plans,
},
f,
indent=2,
ensure_ascii=False,
)
print(
f" 🗑️ Channel {channel_name} completed and removed from plan cache."
)
# After all channels are done, delete the cache
if cache_file.exists():
try:
cache_file.unlink()
print(
f"🗑️ Deleted latest-per-channel plan cache after completion: {cache_file.name}"
)
except Exception as e:
print(f"⚠️ Could not delete latest-per-channel plan cache: {e}")
print(f"🎉 All latest videos downloaded for all channels!")
return True
def download_latest_per_channel(
self,
channel_urls,
limit=5,
force_refresh_download_plan=False,
fuzzy_match=False,
fuzzy_threshold=DEFAULT_FUZZY_THRESHOLD,
force_download=False,
):
"""
Download the latest N videos from each channel in channel_urls.
- Pre-scan all channels for their latest N videos.
- Check against local songs file to avoid duplicates.
- Build a per-channel download plan and cache it.
- Resume robustly if interrupted (removes each channel from the plan as it completes).
- Deletes the plan cache when all channels are done.
"""
# Set force download flag
self.force_download = force_download
print(f"\n🎬 Downloading latest {limit} videos from each channel...")
# Load server songs for availability checking
server_songs = load_server_songs()
server_duplicates_tracking = load_server_duplicates_tracking()
plan_mode = "latest_per_channel"
# Include all parameters that affect the plan generation
plan_kwargs = {
"limit": limit,
"channels": len(channel_urls),
"fuzzy": fuzzy_match,
"threshold": fuzzy_threshold,
}
# Add channel URLs hash to ensure same channels = same cache
channels_hash = hashlib.md5(
"|".join(sorted(channel_urls)).encode()
).hexdigest()[:8]
plan_kwargs["channels_hash"] = channels_hash
cache_file = get_download_plan_cache_file(plan_mode, **plan_kwargs)
use_cache = False
if not force_refresh_download_plan and cache_file.exists():
try:
with open(cache_file, "r", encoding="utf-8") as f:
plan_data = json.load(f)
cache_time = datetime.fromisoformat(plan_data.get("timestamp"))
if datetime.now() - cache_time < timedelta(
days=DEFAULT_CACHE_EXPIRATION_DAYS
):
print(
f"🗂️ Using cached latest-per-channel plan from {cache_time} ({cache_file.name})."
)
channel_plans = plan_data["channel_plans"]
use_cache = True
except Exception as e:
print(f"⚠️ Could not load latest-per-channel plan cache: {e}")
if not use_cache:
print("\n🔎 Pre-scanning all channels for latest videos...")
channel_plans = []
total_found = 0
total_filtered = 0
total_marked = 0
for channel_url in channel_urls:
channel_name, channel_id = get_channel_info(channel_url)
print(f"\n🚦 Starting channel: {channel_name} ({channel_url})")
available_videos = self.tracker.get_channel_video_list(
channel_url, yt_dlp_path=str(self.yt_dlp_path), force_refresh=False
)
print(
f" → Found {len(available_videos)} total videos for this channel."
)
# Pre-filter: Create a set of known duplicate keys for O(1) lookup
known_duplicate_keys = set()
for song_key in server_duplicates_tracking.keys():
known_duplicate_keys.add(song_key)
# Pre-filter videos to exclude known duplicates before processing
pre_filtered_videos = []
for video in available_videos:
artist, title = self.channel_parser.extract_artist_title(video["title"], channel_name)
song_key = create_song_key(artist, title)
if song_key not in known_duplicate_keys:
pre_filtered_videos.append(video)
print(
f" → After pre-filtering: {len(pre_filtered_videos)} videos not previously marked as duplicates."
)
# Process videos until we reach the limit for this channel
filtered_videos = []
videos_checked = 0
for video in pre_filtered_videos:
if len(filtered_videos) >= limit:
break # We have enough videos for this channel
videos_checked += 1
artist, title = self.channel_parser.extract_artist_title(video["title"], channel_name)
# Check if should skip this song during planning phase
should_skip, reason, filtered_count = self._should_skip_song(
artist,
title,
channel_name,
video["id"],
video["title"],
server_songs,
server_duplicates_tracking,
)
if should_skip:
total_filtered += 1
if reason == "on server":
total_marked += filtered_count
continue
filtered_videos.append(video)
print(
f" → After processing: {len(filtered_videos)} videos to download (checked {videos_checked} videos, filtered out {videos_checked - len(filtered_videos)} already on server)."
)
total_found += len(filtered_videos)
channel_plans.append(
{
"channel_name": channel_name,
"channel_url": channel_url,
"videos": filtered_videos,
}
)
print(
f"\n📊 Summary: {total_found} videos to download across {len(channel_plans)} channels (filtered out {total_filtered} already on server, marked {total_marked} new duplicates for future skipping)."
)
plan_data = {
"timestamp": datetime.now().isoformat(),
"channel_plans": channel_plans,
}
with open(cache_file, "w", encoding="utf-8") as f:
json.dump(plan_data, f, indent=2, ensure_ascii=False)
print(f"🗂️ Saved new latest-per-channel plan cache: {cache_file.name}")
# --- Download phase ---
return self.execute_latest_per_channel_parallel(channel_plans, cache_file)
def reset_songlist_all():
"""Delete all files tracked in songlist_tracking.json, clear songlist_tracking.json, and remove songlist songs from karaoke_tracking.json."""
import json
from pathlib import Path
# Load songlist tracking
songlist_tracking_file = Path("data/songlist_tracking.json")
karaoke_tracking_file = Path("data/karaoke_tracking.json")
if songlist_tracking_file.exists():
with open(songlist_tracking_file, "r", encoding="utf-8") as f:
tracking = json.load(f)
else:
tracking = {}
# Delete all files tracked
for entry in tracking.values():
file_path = entry.get("file_path")
if file_path:
p = Path(file_path)
try:
if p.exists():
p.unlink()
print(f"🗑️ Deleted: {p}")
except Exception as e:
print(f"⚠️ Could not delete {p}: {e}")
# Clear songlist_tracking.json
songlist_tracking_file.write_text("{}", encoding="utf-8")
print("🧹 Cleared songlist_tracking.json")
# Remove songlist songs from karaoke_tracking.json
if karaoke_tracking_file.exists():
with open(karaoke_tracking_file, "r", encoding="utf-8") as f:
karaoke_data = json.load(f)
song_keys_to_remove = []
for song_id, song in karaoke_data.get("songs", {}).items():
artist = song.get("artist", "")
title = song.get("title", song.get("name", ""))
key = f"{artist.lower()}_{normalize_title(title)}"
if key in tracking:
song_keys_to_remove.append(song_id)
for song_id in song_keys_to_remove:
del karaoke_data["songs"][song_id]
with open(karaoke_tracking_file, "w", encoding="utf-8") as f:
json.dump(karaoke_data, f, indent=2, ensure_ascii=False)
print(
f"🧹 Removed {len(song_keys_to_remove)} songlist songs from karaoke_tracking.json"
)
print("✅ Global songlist reset complete.")
# For brevity, the rest of the class methods should be copied here from the original download_karaoke.py,
# updating all references to use the new karaoke_downloader.* imports as needed.