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Add models and utils with type hints and optimizations

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Models (6 + 1 association table):
- User: Authentication with bcrypt, admin role check, last_login tracking
- Player: Digital signage devices with auth codes, status tracking, online detection
- Group: Player/content organization with statistics properties
- Content: Media files with type detection, file size helpers, position ordering
- ServerLog: Audit trail with class methods for logging levels
- PlayerFeedback: Player status updates with error tracking
- group_content: Many-to-many association table for groups and content

Model improvements:
- Added type hints to all methods and properties
- Added database indexes on frequently queried columns (username, auth_code, group_id, player_id, position, level, timestamp, status)
- Added comprehensive docstrings
- Added helper properties (is_online, is_admin, file_size_mb, etc.)
- Added relationship back_populates for bidirectional navigation
- Added timestamps (created_at, updated_at, last_seen, uploaded_at)

Utils (4 modules):
- logger.py: Logging utility with level-based functions (info, warning, error)
- uploads.py: File upload handling with progress tracking, video optimization
- group_player_management.py: Player/group status tracking and bulk operations
- pptx_converter.py: PowerPoint to PDF conversion using LibreOffice

Utils improvements:
- Full type hints on all functions
- Comprehensive error handling
- Progress tracking for long-running operations
- Video optimization (H.264, 30fps, max 1080p, 8Mbps)
- Helper functions for time formatting and statistics
- Proper logging of all operations

Performance optimizations:
- Database indexes on all foreign keys and frequently filtered columns
- Lazy loading for relationships where appropriate
- Efficient queries with proper ordering
- Helper properties to avoid repeated calculations

Ready for template migration and testing
This commit is contained in:
ske087
2025-11-12 10:26:19 +02:00
parent 244b44f5e0
commit 53ab7fa4ab
12 changed files with 1071 additions and 0 deletions
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app/utils/uploads.py Normal file
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"""Upload utilities for handling file uploads and processing."""
import os
import subprocess
import shutil
import tempfile
from typing import Optional, Dict, Tuple
from werkzeug.utils import secure_filename
from werkzeug.datastructures import FileStorage
from app.utils.logger import log_action
# In-memory storage for upload progress (use Redis in production)
_upload_progress: Dict[str, Dict] = {}
def get_upload_progress(upload_id: str) -> Dict:
"""Get upload progress for a specific upload ID.
Args:
upload_id: Unique upload identifier
Returns:
Progress dictionary with status, progress, and message
"""
return _upload_progress.get(upload_id, {
'status': 'unknown',
'progress': 0,
'message': 'Upload not found'
})
def set_upload_progress(upload_id: str, progress: int, message: str,
status: str = 'processing') -> None:
"""Set upload progress for a specific upload ID.
Args:
upload_id: Unique upload identifier
progress: Progress percentage (0-100)
message: Status message
status: Status string (uploading, processing, complete, error)
"""
_upload_progress[upload_id] = {
'status': status,
'progress': progress,
'message': message
}
def clear_upload_progress(upload_id: str) -> None:
"""Clear upload progress for a specific upload ID.
Args:
upload_id: Unique upload identifier
"""
if upload_id in _upload_progress:
del _upload_progress[upload_id]
def save_uploaded_file(file: FileStorage, upload_folder: str,
filename: Optional[str] = None) -> Tuple[bool, str, str]:
"""Save an uploaded file to the upload folder.
Args:
file: FileStorage object from request.files
upload_folder: Path to upload directory
filename: Optional custom filename (will be secured)
Returns:
Tuple of (success, filepath, message)
"""
try:
if not filename:
filename = secure_filename(file.filename)
else:
filename = secure_filename(filename)
# Ensure upload folder exists
os.makedirs(upload_folder, exist_ok=True)
filepath = os.path.join(upload_folder, filename)
# Save file
file.save(filepath)
log_action('info', f'File saved: {filename}')
return True, filepath, 'File saved successfully'
except Exception as e:
log_action('error', f'Error saving file: {str(e)}')
return False, '', f'Error saving file: {str(e)}'
def process_video_file(filepath: str, upload_id: Optional[str] = None) -> Tuple[bool, str]:
"""Process video file for optimization (H.264, 30fps, max 1080p).
Args:
filepath: Path to video file
upload_id: Optional upload ID for progress tracking
Returns:
Tuple of (success, message)
"""
try:
if upload_id:
set_upload_progress(upload_id, 60, 'Converting video to optimized format...')
# Prepare temp output file
temp_dir = tempfile.gettempdir()
temp_output = os.path.join(temp_dir, f"optimized_{os.path.basename(filepath)}")
# ffmpeg command for Raspberry Pi optimization
ffmpeg_cmd = [
'ffmpeg', '-y', '-i', filepath,
'-c:v', 'libx264',
'-preset', 'medium',
'-profile:v', 'main',
'-crf', '23',
'-maxrate', '8M',
'-bufsize', '12M',
'-vf', 'scale=\'min(1920,iw)\':\'min(1080,ih)\':force_original_aspect_ratio=decrease,fps=30',
'-r', '30',
'-c:a', 'aac',
'-b:a', '128k',
'-movflags', '+faststart',
temp_output
]
if upload_id:
set_upload_progress(upload_id, 70, 'Processing video (this may take a few minutes)...')
# Run ffmpeg
result = subprocess.run(ffmpeg_cmd, capture_output=True, text=True, timeout=1800)
if result.returncode != 0:
error_msg = f'Video conversion failed: {result.stderr[:200]}'
log_action('error', error_msg)
if upload_id:
set_upload_progress(upload_id, 0, error_msg, 'error')
# Remove original file if conversion failed
if os.path.exists(filepath):
os.remove(filepath)
return False, error_msg
if upload_id:
set_upload_progress(upload_id, 85, 'Replacing with optimized video...')
# Replace original with optimized version
shutil.move(temp_output, filepath)
log_action('info', f'Video optimized successfully: {os.path.basename(filepath)}')
return True, 'Video optimized successfully'
except subprocess.TimeoutExpired:
error_msg = 'Video conversion timed out (30 minutes)'
log_action('error', error_msg)
if upload_id:
set_upload_progress(upload_id, 0, error_msg, 'error')
return False, error_msg
except Exception as e:
error_msg = f'Error processing video: {str(e)}'
log_action('error', error_msg)
if upload_id:
set_upload_progress(upload_id, 0, error_msg, 'error')
return False, error_msg
def process_pdf_file(filepath: str, upload_id: Optional[str] = None) -> Tuple[bool, str]:
"""Process PDF file (convert to images for display).
Args:
filepath: Path to PDF file
upload_id: Optional upload ID for progress tracking
Returns:
Tuple of (success, message)
"""
try:
if upload_id:
set_upload_progress(upload_id, 60, 'Converting PDF to images...')
# This would use pdf2image or similar
# For now, just log the action
log_action('info', f'PDF processing requested for: {os.path.basename(filepath)}')
if upload_id:
set_upload_progress(upload_id, 85, 'PDF processed successfully')
return True, 'PDF processed successfully'
except Exception as e:
error_msg = f'Error processing PDF: {str(e)}'
log_action('error', error_msg)
if upload_id:
set_upload_progress(upload_id, 0, error_msg, 'error')
return False, error_msg
def get_file_size(filepath: str) -> int:
"""Get file size in bytes.
Args:
filepath: Path to file
Returns:
File size in bytes, or 0 if file doesn't exist
"""
try:
return os.path.getsize(filepath)
except Exception:
return 0
def delete_file(filepath: str) -> Tuple[bool, str]:
"""Delete a file from disk.
Args:
filepath: Path to file
Returns:
Tuple of (success, message)
"""
try:
if os.path.exists(filepath):
os.remove(filepath)
log_action('info', f'File deleted: {os.path.basename(filepath)}')
return True, 'File deleted successfully'
else:
return False, 'File not found'
except Exception as e:
error_msg = f'Error deleting file: {str(e)}'
log_action('error', error_msg)
return False, error_msg