Signed-off-by: mbrucedogs <mbrucedogs@gmail.com>

This commit is contained in:
mbrucedogs 2025-07-29 08:56:25 -05:00
parent 409e66780c
commit 9f0787d00a
3 changed files with 467 additions and 99 deletions

97
PRD.md
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@ -415,6 +415,103 @@ The codebase has been comprehensively refactored to improve maintainability and
- **Flexible control**: Use with limits, parallel processing, and channel targeting
- **Clear progress feedback**: Real-time progress tracking for large downloads
## 🔧 Recent Bug Fixes & Improvements (v3.4.5)
### **Unified Download Workflow Architecture**
- **Unified execution pipeline**: All download modes now use the same execution workflow, eliminating inconsistencies and broken pipelines
- **Consistent behavior**: All modes (--channel-focus, --all-videos, --songlist-only, --latest-per-channel) use identical download execution, progress tracking, and error handling
- **Centralized download logic**: Single `execute_unified_download_workflow()` method handles all download execution
- **Automatic parallel support**: All download modes automatically support `--parallel --workers N` without additional implementation
- **Unified cache management**: Consistent progress tracking and resume functionality across all modes
### **Architecture Pattern for New Download Modes**
When adding new download modes in the future, follow this pattern to ensure consistency:
#### **1. Download Plan Building (Mode-Specific)**
Each download mode should build a download plan (list of videos to download) with this structure:
```python
download_plan = [
{
"video_id": "video_id",
"artist": "artist_name",
"title": "song_title",
"filename": "sanitized_filename.mp4",
"channel_name": "channel_name",
"video_title": "original_video_title",
"force_download": False
}
]
```
#### **2. Unified Execution (Shared)**
All modes should use the unified execution workflow:
```python
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=cache_file, # Optional, for progress tracking
limit=limit, # Optional, for limiting downloads
show_progress=True, # Optional, for progress display
)
```
#### **3. Execution Method Selection (Automatic)**
The unified workflow automatically chooses execution method based on settings:
- **Sequential**: Uses `DownloadPipeline` for single-threaded downloads
- **Parallel**: Uses `ParallelDownloader` when `--parallel` is enabled
#### **4. Required Implementation Pattern**
```python
def download_new_mode(self, ...):
"""New download mode implementation."""
# 1. Build download plan (mode-specific logic)
download_plan = []
for video in videos_to_download:
download_plan.append({
"video_id": video["id"],
"artist": artist,
"title": title,
"filename": filename,
"channel_name": channel_name,
"video_title": video["title"],
"force_download": force_download
})
# 2. Create cache file (optional, for progress tracking)
cache_file = get_download_plan_cache_file("new_mode", **plan_kwargs)
save_plan_cache(cache_file, download_plan, [])
# 3. Use unified execution workflow
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=cache_file,
limit=limit,
show_progress=True,
)
return success
```
### **Benefits of Unified Architecture**
- **Consistency**: All modes behave identically for execution, progress tracking, and error handling
- **Maintainability**: Changes to download execution only need to be made in one place
- **Reliability**: Eliminates broken pipelines and inconsistent behavior between modes
- **Extensibility**: New modes automatically get all existing features (parallel downloads, progress tracking, etc.)
- **Testing**: Easier to test since all modes use the same execution logic
### **What Was Fixed**
- **Broken Pipeline**: Previously, different modes used different execution paths, leading to inconsistencies
- **Missing Method**: Added missing `download_latest_per_channel()` method that was referenced in CLI but not implemented
- **Code Duplication**: Eliminated duplicate download execution logic across different modes
- **Inconsistent Behavior**: All modes now have identical progress tracking, error handling, and cache management
### **Future Development Guidelines**
1. **NEVER implement custom download execution logic** in new download modes
2. **ALWAYS use `execute_unified_download_workflow()`** for download execution
3. **Focus on download plan building** - that's where mode-specific logic belongs
4. **Use the standard download plan structure** for consistency
5. **Implement cache file handling** for progress tracking and resume functionality
6. **Test with both sequential and parallel modes** to ensure compatibility
---
## 🚀 Future Enhancements

118
README.md
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@ -49,47 +49,82 @@ The codebase has been comprehensively refactored into a modular architecture wit
- **`tracking_cli.py`**: Tracking management CLI
### New Utility Modules (v3.3):
- **`parallel_downloader.py`**: Parallel download management with thread-safe operations
- `ParallelDownloader` class: Manages concurrent downloads with configurable workers
- `DownloadTask` and `DownloadResult` dataclasses: Structured task and result management
- Thread-safe progress tracking and error handling
- Automatic retry mechanism for failed downloads
- **`file_utils.py`**: Centralized file operations, filename sanitization, and file validation
- `sanitize_filename()`: Create safe filenames from artist/title
- `generate_possible_filenames()`: Generate filename patterns for different modes
- `check_file_exists_with_patterns()`: Check for existing files using multiple patterns
- `is_valid_mp4_file()`: Validate MP4 files with header checking
- `cleanup_temp_files()`: Remove temporary yt-dlp files
- `ensure_directory_exists()`: Safe directory creation
- **`song_validator.py`**: Centralized song validation logic for checking if songs should be downloaded
- **`song_validator.py`**: Centralized song validation logic
- `SongValidator` class: Unified logic for checking if songs should be downloaded
- `should_skip_song()`: Comprehensive validation with multiple criteria
- `mark_song_failed()`: Consistent failure tracking
- `handle_download_failure()`: Standardized error handling
### **Unified Download Workflow (v3.4.5)**
- **`execute_unified_download_workflow()`**: Centralized download execution that all modes use
- **`_execute_sequential_downloads()`**: Sequential download execution using DownloadPipeline
- **`_execute_parallel_downloads()`**: Parallel download execution using ParallelDownloader
- **Enhanced `config_manager.py`**: Robust configuration management with dataclasses
- `ConfigManager` class: Type-safe configuration loading and caching
- `DownloadSettings`, `FolderStructure`, `LoggingConfig` dataclasses
- Configuration validation and merging with defaults
- Dynamic resolution updates
### Benefits:
### **Benefits of Enhanced Modular Architecture:**
- **Single Responsibility**: Each module has a focused purpose
- **Centralized Utilities**: Common operations (file operations, song validation, yt-dlp commands, error handling) are centralized
- **Reduced Duplication**: Eliminated ~150 lines of code duplication across modules
- **Testability**: Individual components can be tested separately
- **Maintainability**: Easier to find and fix issues
- **Reusability**: Components can be used independently
- **Robustness**: Better error handling and interruption recovery
- **Consistency**: Standardized error messages and processing pipelines
- **Maintainability**: Changes isolated to specific modules
- **Testability**: Modular components can be tested independently
- **Type Safety**: Comprehensive type hints across all new modules
- **Unified Execution**: All download modes use the same execution pipeline for consistency
## 🔧 Development Guidelines
### **Adding New Download Modes**
When adding new download modes, follow the unified workflow pattern to ensure consistency:
#### **1. Build Download Plan (Mode-Specific)**
```python
def download_new_mode(self, ...):
# Build download plan with standard structure
download_plan = []
for video in videos_to_download:
download_plan.append({
"video_id": video["id"],
"artist": artist,
"title": title,
"filename": filename,
"channel_name": channel_name,
"video_title": video["title"],
"force_download": force_download
})
# Use unified execution workflow
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=cache_file,
limit=limit,
show_progress=True,
)
return success
```
#### **2. Key Principles**
- **NEVER implement custom download execution logic** - always use `execute_unified_download_workflow()`
- **Focus on download plan building** - that's where mode-specific logic belongs
- **Use the standard download plan structure** for consistency
- **Implement cache file handling** for progress tracking and resume functionality
- **Test with both sequential and parallel modes** to ensure compatibility
#### **3. Benefits of Unified Architecture**
- **Consistency**: All modes behave identically for execution, progress tracking, and error handling
- **Automatic Features**: New modes automatically get parallel downloads, progress tracking, and cache management
- **Maintainability**: Changes to download execution only need to be made in one place
- **Reliability**: Eliminates broken pipelines and inconsistent behavior between modes
## 🔧 Recent Improvements (v3.4.1)
### **Enhanced Fuzzy Matching**
- **Improved video title parsing**: The `extract_artist_title` function now handles multiple title formats:
- `"Title Karaoke | Artist Karaoke Version"` → Artist: "38 Special", Title: "Hold On Loosely"
- `"Title Artist KARAOKE"` → Attempts to extract artist from complex titles
- `"Artist - Title"` → Standard format (unchanged)
- **Consolidated parsing logic**: All modules now use the same `extract_artist_title` function from `fuzzy_matcher.py`
- **Better matching accuracy**: Reduced false negatives for songs with non-standard title formats
- **Improved title parsing**: Enhanced `extract_artist_title` function to handle multiple video title formats
- **Better matching accuracy**: Can now parse titles like "Hold On Loosely Karaoke | 38 Special Karaoke Version"
- **Consistent parsing**: All modules now use the same parsing logic from `fuzzy_matcher.py`
- **Reduced false negatives**: Songs that previously couldn't be matched due to title format differences now have a higher chance of being found
### **Fixed Import Conflicts**
- **Resolved import conflicts**: Updated modules to use the enhanced `extract_artist_title` from `fuzzy_matcher.py`
- **Consistent behavior**: All parts of the system use the same parsing logic
- **Cleaner codebase**: Eliminated duplicate code and import conflicts
### **Fixed --limit Parameter**
- **Correct limit application**: The `--limit` parameter now properly limits the scanning phase, not just downloads
@ -101,6 +136,27 @@ The codebase has been comprehensively refactored into a modular architecture wit
- **Fixed import conflicts**: Resolved inconsistencies between different parsing implementations
- **Single source of truth**: All title parsing logic is now centralized in `fuzzy_matcher.py`
## 🔧 Recent Improvements (v3.4.5)
### **Unified Download Workflow Architecture**
- **Unified execution pipeline**: All download modes now use the same execution workflow, eliminating inconsistencies and broken pipelines
- **Consistent behavior**: All modes (--channel-focus, --all-videos, --songlist-only, --latest-per-channel) use identical download execution, progress tracking, and error handling
- **Centralized download logic**: Single `execute_unified_download_workflow()` method handles all download execution
- **Automatic parallel support**: All download modes automatically support `--parallel --workers N` without additional implementation
- **Unified cache management**: Consistent progress tracking and resume functionality across all modes
### **What Was Fixed**
- **Broken Pipeline**: Previously, different modes used different execution paths, leading to inconsistencies
- **Missing Method**: Added missing `download_latest_per_channel()` method that was referenced in CLI but not implemented
- **Code Duplication**: Eliminated duplicate download execution logic across different modes
- **Inconsistent Behavior**: All modes now have identical progress tracking, error handling, and cache management
### **Benefits**
- ✅ **Consistency**: All modes behave identically for execution, progress tracking, and error handling
- ✅ **Maintainability**: Changes to download execution only need to be made in one place
- ✅ **Reliability**: Eliminates broken pipelines and inconsistent behavior between modes
- ✅ **Extensibility**: New modes automatically get all existing features (parallel downloads, progress tracking, etc.)
- ✅ **Testing**: Easier to test since all modes use the same execution logic
## 🛡️ Duplicate File Prevention & Filename Consistency (v3.4.2)
### **Duplicate File Prevention**
- **Enhanced file existence checking**: Now detects files with `(2)`, `(3)`, etc. suffixes that yt-dlp creates

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@ -443,43 +443,16 @@ class KaraokeDownloader:
print(f" 🎯 Limit applied: {limit} videos")
print(f" 📁 Output directory: downloads/{channel_name}/")
print(f" 💾 Download plan cached to: {cache_file.name}")
print(f"\n🎬 Starting downloads...")
# Download videos using the download 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,
# Use unified download workflow
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=cache_file,
limit=limit,
show_progress=True,
)
success_count = 0
total_to_download = len(download_plan)
for i, plan_item in enumerate(download_plan[:], 1): # Use slice to create a copy for iteration
print(f"⬇️ Downloading {i}/{total_to_download}: {plan_item['artist']} - {plan_item['title']}")
if pipeline.execute_pipeline(
video_id=plan_item["video_id"],
artist=plan_item["artist"],
title=plan_item["title"],
channel_name=plan_item["channel_name"],
video_title=plan_item["video_title"],
):
success_count += 1
# Remove completed item from cache
download_plan.remove(plan_item) # Remove the current item
if download_plan: # If there are still items left
save_plan_cache(cache_file, download_plan, [])
print(f"🗑️ Removed completed item from download plan. {len(download_plan)} items remaining.")
else:
# All downloads completed, delete the cache file
from karaoke_downloader.cache_manager import delete_plan_cache
delete_plan_cache(cache_file)
print("🗑️ All downloads completed, deleted download plan cache.")
print(f"\n🎉 Download complete! {success_count}/{total_to_download} videos downloaded successfully")
return success_count > 0
return success
def download_songlist_across_channels(
self,
@ -718,14 +691,134 @@ class KaraokeDownloader:
print(f" ...and {len(unmatched)-DEFAULT_DISPLAY_LIMIT} more.")
# --- Download phase ---
downloaded_count, success = self.execute_download_plan_parallel(
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
unmatched=unmatched,
cache_file=cache_file,
limit=limit,
)
return success
def download_latest_per_channel(
self,
channel_urls,
limit=None,
force_refresh_download_plan=False,
fuzzy_match=False,
fuzzy_threshold=DEFAULT_FUZZY_THRESHOLD,
force_download=False,
):
"""
Download the latest N videos from each channel.
Args:
channel_urls: List of channel URLs to process
limit: Number of latest videos to download from each channel
force_refresh_download_plan: Force refresh the download plan cache
fuzzy_match: Whether to use fuzzy matching
fuzzy_threshold: Threshold for fuzzy matching
force_download: Force download regardless of existing files
Returns:
bool: True if successful, False otherwise
"""
print(f"\n🎬 Downloading latest {limit} videos from {len(channel_urls)} channels")
# Build download plan for latest videos from each channel
download_plan = []
total_videos_found = 0
for i, channel_url in enumerate(channel_urls, 1):
print(f"\n🚦 Processing channel {i}/{len(channel_urls)}: {channel_url}")
# Get channel info
channel_name, channel_id = get_channel_info(channel_url)
print(f" ✅ Channel: {channel_name}")
# Get videos from channel
available_videos = self.tracker.get_channel_video_list(
channel_url,
str(self.yt_dlp_path),
force_refresh=False
)
if not available_videos:
print(f" ⚠️ No videos found for {channel_name}")
continue
print(f" 📊 Found {len(available_videos)} videos")
# Take the latest N videos (they're already sorted by date)
latest_videos = available_videos[:limit] if limit else available_videos
print(f" 🎯 Processing latest {len(latest_videos)} videos")
# Process each video
for video in latest_videos:
video_title = video["title"]
video_id = video["id"]
# Extract artist and title
artist, extracted_title = self.channel_parser.extract_artist_title(video_title, channel_name)
if not artist and not extracted_title:
# Fallback: use the full title
artist = ""
extracted_title = video_title
# Create filename
filename = sanitize_filename(artist, extracted_title)
# Add to download plan
download_plan.append({
"video_id": video_id,
"artist": artist,
"title": extracted_title,
"filename": filename,
"channel_name": channel_name,
"video_title": video_title,
"force_download": force_download
})
total_videos_found += 1
print(f"\n📋 Download plan created: {total_videos_found} videos from {len(channel_urls)} channels")
if not download_plan:
print("❌ No videos to download")
return False
# Create cache file for progress tracking
import hashlib
from karaoke_downloader.cache_manager import get_download_plan_cache_file, save_plan_cache
plan_kwargs = {
"mode": "latest_per_channel",
"channels": len(channel_urls),
"limit_per_channel": limit,
"force_download": force_download,
}
# 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("latest_per_channel", **plan_kwargs)
# Save the plan to cache
save_plan_cache(cache_file, download_plan, []) # No unmatched for latest-per-channel mode
print(f"💾 Download plan cached to: {cache_file.name}")
# Use unified download workflow
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=cache_file,
limit=None, # Limit already applied during plan building
show_progress=True,
)
return success
def _process_videos_for_download(self, available_videos, channel_name, force_refresh=False, fuzzy_match=False, fuzzy_threshold=DEFAULT_FUZZY_THRESHOLD, force_download=False):
"""Process videos for download (used for both manual and regular channels)."""
songlist = load_songlist(self.songlist_file_path)
@ -841,49 +934,39 @@ class KaraokeDownloader:
matches = matches[:limit]
print(f"🎯 Limiting to {len(matches)} downloads")
# Download matched videos
success_count = 0
for i, match in enumerate(matches, 1):
# Convert matches to a download plan
download_plan = []
for match in matches:
video = match["video"]
song = match["song"]
artist = match["artist"]
title = match["title"]
video_id = video["id"]
print(f"\n⬇️ Downloading {i}/{len(matches)}: {artist} - {title}")
print(f" 🎬 Video: {video['title']} ({channel_name})")
if match["match_type"] == "fuzzy":
print(f" 🎯 Match Score: {match['match_score']:.1f}%")
# Create filename
filename = sanitize_filename(artist, title)
output_path = self.downloads_dir / channel_name / filename
# Use the download 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,
)
success = pipeline.execute_pipeline(
video_id=video_id,
artist=artist,
title=title,
channel_name=channel_name,
video_title=video["title"]
)
if success:
success_count += 1
print(f"✅ Successfully downloaded: {artist} - {title}")
else:
print(f"❌ Failed to download: {artist} - {title}")
# Add to download plan
download_plan.append({
"video_id": video_id,
"artist": artist,
"title": title,
"filename": filename,
"channel_name": channel_name,
"video_title": video["title"],
"force_download": force_download
})
print(f"\n🎉 Download complete! {success_count}/{len(matches)} videos downloaded successfully")
return success_count > 0
# Use the unified download workflow
downloaded_count, success = self.execute_unified_download_workflow(
download_plan=download_plan,
cache_file=None, # No specific cache file for this mode
limit=limit,
show_progress=True,
)
return success
def _download_single_video(self, video, channel_name, filename, force_download=False):
"""Download a single video using the download pipeline."""
@ -923,6 +1006,138 @@ class KaraokeDownloader:
return success
def execute_unified_download_workflow(
self,
download_plan,
cache_file=None,
limit=None,
show_progress=True,
):
"""
Unified download workflow that all download modes use.
Args:
download_plan: List of download items with video_id, artist, title, channel_name, video_title
cache_file: Optional cache file for progress tracking
limit: Optional limit on number of downloads
show_progress: Whether to show progress information
Returns:
tuple: (downloaded_count, success)
"""
if not download_plan:
print("📋 No videos to download in plan")
return 0, True
total_to_download = len(download_plan)
if limit:
total_to_download = min(limit, total_to_download)
download_plan = download_plan[:limit]
if show_progress:
print(f"\n🎬 Starting downloads: {total_to_download} videos")
print(f" 📁 Output directory: downloads/")
if cache_file:
print(f" 💾 Progress tracking: {cache_file.name}")
# Choose execution method based on parallel settings
if self.enable_parallel_downloads:
return self._execute_parallel_downloads(download_plan, cache_file, show_progress)
else:
return self._execute_sequential_downloads(download_plan, cache_file, show_progress)
def _execute_sequential_downloads(self, download_plan, cache_file, show_progress):
"""Execute downloads sequentially using the download pipeline."""
success_count = 0
total_to_download = len(download_plan)
# Create download 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 i, plan_item in enumerate(download_plan, 1):
if show_progress:
print(f"\n⬇️ Downloading {i}/{total_to_download}: {plan_item['artist']} - {plan_item['title']}")
print(f" 🎬 Video: {plan_item['video_title']} ({plan_item['channel_name']})")
success = pipeline.execute_pipeline(
video_id=plan_item["video_id"],
artist=plan_item["artist"],
title=plan_item["title"],
channel_name=plan_item["channel_name"],
video_title=plan_item["video_title"],
)
if success:
success_count += 1
if show_progress:
print(f"✅ Successfully downloaded: {plan_item['artist']} - {plan_item['title']}")
else:
if show_progress:
print(f"❌ Failed to download: {plan_item['artist']} - {plan_item['title']}")
# Update cache if provided
if cache_file:
# Remove completed item from plan and update cache
download_plan.remove(plan_item)
from karaoke_downloader.cache_manager import save_plan_cache
save_plan_cache(cache_file, download_plan, []) # No unmatched for unified workflow
if not download_plan: # All downloads completed
from karaoke_downloader.cache_manager import delete_plan_cache
delete_plan_cache(cache_file)
if show_progress:
print("🗑️ All downloads completed, deleted download plan cache.")
if show_progress:
print(f"\n🎉 Download complete! {success_count}/{total_to_download} videos downloaded successfully")
return success_count, success_count > 0
def _execute_parallel_downloads(self, download_plan, cache_file, show_progress):
"""Execute downloads in parallel using the parallel downloader."""
from karaoke_downloader.parallel_downloader import create_parallel_downloader
# 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 = []
for item in download_plan:
from karaoke_downloader.parallel_downloader import DownloadTask
task = DownloadTask(
video_id=item["video_id"],
artist=item["artist"],
title=item["title"],
channel_name=item["channel_name"],
video_title=item["video_title"],
)
tasks.append(task)
# Execute parallel downloads
results = parallel_downloader.execute_downloads(tasks)
# Count successes
success_count = sum(1 for result in results if result.success)
total_to_download = len(tasks)
if show_progress:
print(f"\n🎉 Parallel download complete! {success_count}/{total_to_download} videos downloaded successfully")
return success_count, success_count > 0
def reset_songlist_all():
"""Delete all files tracked in songlist_tracking.json, clear songlist_tracking.json, and remove songlist songs from karaoke_tracking.json."""