docling-studio/backend/app.py
2025-05-30 14:07:10 +02:00

1413 lines
50 KiB
Python

from flask import Flask, request, send_file, jsonify, Response
import subprocess
import os
import sys
import time
import threading
import logging
from pathlib import Path
import uuid
import pdf2image
from multipart_handler import MultipartHandler, default_handler
# Add the parent directory to Python path to allow imports
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
# Configure logging
logging.basicConfig(level=logging.INFO,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)
# Initialize Flask app with frontend folder structure
# Frontend is in the parent directory
frontend_path = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), 'frontend')
app = Flask(__name__,
static_folder=os.path.join(frontend_path, 'static'),
static_url_path='/static')
app.config['MAX_CONTENT_LENGTH'] = 100 * 1024 * 1024 # 100MB
# Dictionary to store background task results
task_results = {}
# Import batch processor if available
try:
from backend.batch_treatment.batch_processor import start_batch_processing, get_batch_processor, cleanup_old_batches
batch_processing_available = True
except ImportError:
logger.warning("batch_processor.py not found. Batch processing features will be disabled.")
batch_processing_available = False
# Ensure results folder exists
def ensure_results_folder():
# Always create results folder relative to where app.py is run from
results_dir = Path.cwd() / "results"
if not results_dir.exists():
results_dir.mkdir()
logger.info(f"Created results directory at: {results_dir.absolute()}")
else:
logger.info(f"Results directory exists at: {results_dir.absolute()}")
return results_dir
# Ensure frontend folders exist
def ensure_frontend_folders():
frontend_dir = Path(frontend_path)
if not frontend_dir.exists():
frontend_dir.mkdir()
logger.info(f"Created frontend directory: {frontend_dir}")
static_dir = frontend_dir / "static"
if not static_dir.exists():
static_dir.mkdir()
logger.info(f"Created static directory: {static_dir}")
return frontend_dir, static_dir
@app.route('/')
def index():
return send_file(os.path.join(frontend_path, 'index.html'))
@app.route('/batch')
def batch_interface():
"""Serve the batch processing interface"""
return send_file(os.path.join(frontend_path, 'batch.html'))
@app.route('/static/<path:filename>')
def serve_static(filename):
return send_file(os.path.join(frontend_path, 'static', filename))
@app.route('/pdf-files')
def pdf_files():
try:
# Get list of PDF files in the current directory
pdf_files = [f for f in os.listdir('.') if f.endswith('.pdf')]
logger.info(f"Found {len(pdf_files)} PDF files")
return jsonify(pdf_files)
except Exception as e:
logger.error(f"Error listing PDF files: {str(e)}")
return jsonify({"error": str(e)}), 500
@app.route('/pdf-info/<path:pdf_file>')
def pdf_info(pdf_file):
"""Get information about a PDF file (page count, etc.)"""
try:
if not os.path.exists(pdf_file):
return jsonify({'error': f'PDF file not found: {pdf_file}'}), 404
# Get page count using pdf2image
try:
from pdf2image.pdf2image import pdfinfo_from_path
info = pdfinfo_from_path(pdf_file)
page_count = info["Pages"]
except Exception as e:
# Fallback method
logger.warning(f"pdfinfo failed, using fallback: {e}")
images = pdf2image.convert_from_path(pdf_file, dpi=72, first_page=1, last_page=1)
page_count = 1 # At least one page if we got here
# Try to get actual count by checking last pages
for i in range(2, 1000): # Reasonable upper limit
try:
images = pdf2image.convert_from_path(pdf_file, dpi=72, first_page=i, last_page=i)
if not images:
page_count = i - 1
break
page_count = i
except:
page_count = i - 1
break
return jsonify({
'pageCount': page_count,
'filename': os.path.basename(pdf_file),
'size': os.path.getsize(pdf_file)
})
except Exception as e:
logger.error(f"Error getting PDF info: {str(e)}")
return jsonify({'error': str(e)}), 500
def run_command(task_id, command):
"""Run a command in a background thread and store result"""
logger.info(f"Running command: {command}")
try:
# Log the current working directory to help with debugging
current_dir = os.getcwd()
logger.info(f"Current working directory: {current_dir}")
# The command already contains the full path, so we just need to verify it exists
script_parts = command.split()
script_path = script_parts[1]
if not os.path.exists(script_path):
logger.error(f"Script not found: {script_path} in {current_dir}")
task_results[task_id] = {
'success': False,
'error': f"Script not found: {script_path}. Make sure all scripts are in the correct directory.",
'done': True
}
return
# Run the command with more detailed error capture
# Important: Use pipe input to automatically answer "n" to the prompt
# Make sure we run from the project root directory
process = subprocess.Popen(
command,
shell=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
text=True,
universal_newlines=True,
cwd=os.getcwd() # Explicitly set working directory to current directory
)
# Send "n" to the process to bypass the "process all pages" prompt
stdout, stderr = process.communicate(input="n\n")
# Log the raw output for debugging
logger.info(f"Command stdout: {stdout[:500]}...")
if stderr:
logger.error(f"Command stderr: {stderr}")
# Update task result based on return code
if process.returncode == 0:
task_results[task_id] = {
'success': True,
'output': stdout,
'done': True
}
logger.info(f"Command completed successfully: {task_id}")
else:
error_message = stderr or f"Command failed with return code {process.returncode}"
task_results[task_id] = {
'success': False,
'error': error_message,
'done': True
}
logger.error(f"Command failed: {task_id} - {error_message}")
except Exception as e:
import traceback
logger.error(f"Unexpected error: {task_id} - {str(e)}")
logger.error(traceback.format_exc())
task_results[task_id] = {
'success': False,
'error': f"Exception: {str(e)}",
'done': True
}
@app.route('/run-analyzer', methods=['POST'])
def run_analyzer():
try:
pdf_file = request.form.get('pdf_file')
page_num = request.form.get('page_num', 1)
if not pdf_file:
return jsonify({'success': False, 'error': 'PDF file not specified'}), 400
# List files in current directory to help with debugging
files = os.listdir('.')
logger.info(f"Files in current directory: {files}")
# Check if PDF exists
if not os.path.exists(pdf_file):
logger.error(f"PDF file not found: {pdf_file}")
return jsonify({'success': False, 'error': f'PDF file not found: {pdf_file}'}), 400
# Check if analyzer.py exists in the new location
analyzer_path = os.path.join('backend', 'page_treatment', 'analyzer.py')
if not os.path.exists(analyzer_path):
logger.error(f"analyzer.py not found at: {analyzer_path}")
return jsonify({'success': False, 'error': 'analyzer.py not found in backend/page_treatment directory'}), 500
# Add the --all-pages=false flag or explicitly specify the page to avoid the prompt
command = f"python backend/page_treatment/analyzer.py --image {pdf_file} --page {page_num} --start-page {page_num} --end-page {page_num}"
# Generate a task ID
task_id = f"analyzer_{int(time.time())}"
# Initialize task result
task_results[task_id] = {
'success': None,
'output': "Running analyzer...",
'done': False
}
# Start background thread
thread = threading.Thread(target=run_command, args=(task_id, command))
thread.daemon = True
thread.start()
# Return the task ID immediately
return jsonify({
'success': True,
'task_id': task_id,
'message': f"Analyzer started. Processing {pdf_file} page {page_num}..."
})
except Exception as e:
import traceback
logger.error(f"Error starting analyzer: {str(e)}")
logger.error(traceback.format_exc())
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/task-status/<task_id>')
def task_status(task_id):
if task_id not in task_results:
return jsonify({'success': False, 'error': 'Task not found'}), 404
result = task_results[task_id].copy() # Make a copy to avoid modifying the original
# If task is completed, add file paths and verify they exist
if result['done'] and result['success']:
if task_id.startswith('analyzer_'):
doctags_path = Path("results") / "output.doctags.txt"
if doctags_path.exists():
result['doctags_file'] = "results/output.doctags.txt"
else:
logger.warning(f"DocTags file not found: {doctags_path}")
elif task_id.startswith('visualizer_'):
page_num = task_id.split('_')[-1] if len(task_id.split('_')) > 2 else "1"
viz_filename = f"visualization_page_{page_num}.png"
# Check multiple possible locations
possible_paths = [
Path("results") / viz_filename,
Path.cwd() / "results" / viz_filename,
Path(__file__).parent.parent / "results" / viz_filename
]
for path in possible_paths:
if path.exists():
result['image_file'] = f"results/{viz_filename}"
logger.info(f"Found visualization at: {path}")
break
else:
logger.error(f"Visualization file not found in any location for page {page_num}")
# Log what files exist in results
results_dir = Path("results")
if results_dir.exists():
files = list(results_dir.glob("*.png"))
logger.info(f"PNG files in results: {[f.name for f in files[:5]]}")
return jsonify(result)
@app.route('/run-visualizer', methods=['POST'])
def run_visualizer():
try:
pdf_file = request.form.get('pdf_file')
page_num = request.form.get('page_num', 1)
adjust = request.form.get('adjust') == 'true'
if not pdf_file:
return jsonify({'success': False, 'error': 'PDF file not specified'}), 400
command = f"python backend/page_treatment/visualizer.py --doctags results/output.doctags.txt --pdf {pdf_file} --page {page_num}"
if adjust:
command += " --adjust"
# Generate a task ID
task_id = f"visualizer_{int(time.time())}_{page_num}"
# Initialize task result
task_results[task_id] = {
'success': None,
'output': "Running visualizer...",
'done': False
}
# Start background thread
thread = threading.Thread(target=run_command, args=(task_id, command))
thread.daemon = True
thread.start()
return jsonify({
'success': True,
'task_id': task_id,
'message': f"Visualizer started. Processing {pdf_file} page {page_num}..."
})
except Exception as e:
logger.error(f"Error starting visualizer: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/run-extractor', methods=['POST'])
def run_extractor():
try:
pdf_file = request.form.get('pdf_file')
page_num = request.form.get('page_num', 1)
adjust = request.form.get('adjust') == 'true'
if not pdf_file:
return jsonify({'success': False, 'error': 'PDF file not specified'}), 400
command = f"python backend/page_treatment/picture_extractor.py --doctags results/output.doctags.txt --pdf {pdf_file} --page {page_num}"
if adjust:
command += " --adjust"
# Generate a task ID
task_id = f"extractor_{int(time.time())}_{page_num}"
# Initialize task result
task_results[task_id] = {
'success': None,
'output': "Running picture extractor...",
'done': False
}
# Start background thread
thread = threading.Thread(target=run_command, args=(task_id, command))
thread.daemon = True
thread.start()
return jsonify({
'success': True,
'task_id': task_id,
'message': f"Picture extractor started. Processing {pdf_file} page {page_num}..."
})
except Exception as e:
logger.error(f"Error starting extractor: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/results/<path:filename>')
def results(filename):
try:
# Always use the results directory relative to current working directory
results_dir = Path.cwd() / "results"
file_path = results_dir / filename
logger.info(f"Requested file: {filename}")
logger.info(f"Looking for file at: {file_path.absolute()}")
logger.info(f"File exists: {file_path.exists()}")
if file_path.exists() and file_path.is_file():
logger.info(f"Serving file: {file_path}")
return send_file(str(file_path.absolute()))
else:
logger.error(f"File not found: {file_path}")
# List what files ARE in the results directory
if results_dir.exists():
files = list(results_dir.glob("*"))
logger.info(f"Files in results directory: {[f.name for f in files[:10]]}")
return jsonify({'error': f"File not found: {filename}"}), 404
except Exception as e:
logger.error(f"Error serving file {filename}: {str(e)}")
import traceback
logger.error(traceback.format_exc())
return jsonify({'error': f"Error serving file: {filename}"}), 500
@app.route('/pdf-preview/<pdf_file>/<int:page_num>')
def pdf_preview(pdf_file, page_num):
"""Generate and serve a preview image of a PDF page"""
try:
import pdf2image
from PIL import Image
import io
# Check if PDF exists
if not os.path.exists(pdf_file):
return jsonify({'error': f'PDF file not found: {pdf_file}'}), 404
# Convert PDF page to image
logger.info(f"Generating preview for {pdf_file} page {page_num}")
# Use moderate DPI for preview (lower than analyzer's 200)
preview_dpi = 150
try:
pdf_images = pdf2image.convert_from_path(
pdf_file,
dpi=preview_dpi,
first_page=page_num,
last_page=page_num
)
if not pdf_images:
return jsonify({'error': f'Could not extract page {page_num} from PDF'}), 400
# Get the first (and only) page
pil_image = pdf_images[0]
# Resize if too large (max width 1200px for web preview)
max_width = 1200
if pil_image.width > max_width:
ratio = max_width / pil_image.width
new_height = int(pil_image.height * ratio)
pil_image = pil_image.resize((max_width, new_height), Image.LANCZOS)
# Convert to bytes
img_io = io.BytesIO()
pil_image.save(img_io, 'PNG', optimize=True)
img_io.seek(0)
return send_file(img_io, mimetype='image/png',
as_attachment=False,
download_name=f'{pdf_file}_page_{page_num}_preview.png')
except Exception as e:
logger.error(f"Error converting PDF to image: {str(e)}")
return jsonify({'error': f'Error converting PDF to image: {str(e)}'}), 500
except Exception as e:
logger.error(f"Error generating PDF preview: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/check-environment')
def check_environment():
"""Endpoint to check the environment and available scripts"""
try:
# Get current directory
current_dir = os.getcwd()
# List all files in directory
files = os.listdir('.')
# Check for required scripts in new location
backend_page_dir = os.path.join('backend', 'page_treatment')
required_scripts = ['analyzer.py', 'visualizer.py', 'picture_extractor.py']
missing_scripts = []
for script in required_scripts:
script_path = os.path.join(backend_page_dir, script)
if not os.path.exists(script_path):
missing_scripts.append(script)
# Check for PDFs
pdf_files = [f for f in files if f.endswith('.pdf')]
# Check for results directory
results_dir = Path("results")
results_dir_exists = results_dir.exists()
results_files = []
# Try to check Python version and installed packages
python_info = subprocess.run(['python', '--version'], capture_output=True, text=True)
python_version = python_info.stdout.strip() if python_info.returncode == 0 else "Unknown"
# Check if the 'results' directory exists and is writable
results_writable = False
if results_dir_exists:
try:
test_file = results_dir / "test_write.txt"
with open(test_file, 'w') as f:
f.write("test")
os.remove(test_file)
results_writable = True
# List files in results directory
results_files = [f.name for f in results_dir.iterdir() if f.is_file()][:20] # Limit to 20 files
except:
pass
return jsonify({
'cwd': current_dir,
'files': files,
'missing_scripts': missing_scripts,
'pdf_files': pdf_files,
'results_dir_exists': results_dir_exists,
'results_dir_writable': results_writable,
'results_files': results_files,
'python_version': python_version,
'batch_processing_available': batch_processing_available
})
except Exception as e:
import traceback
error_details = traceback.format_exc()
return jsonify({
'error': str(e),
'traceback': error_details
}), 500
@app.route('/run-manual-command', methods=['POST'])
def run_manual_command():
"""Endpoint to run a manual command for debugging purposes"""
try:
command = request.form.get('command')
if not command:
return jsonify({'success': False, 'error': 'No command specified'}), 400
logger.info(f"Running manual command: {command}")
# Update paths in manual commands to use backend directory only if not already present
if 'backend/page_treatment/' not in command:
command = command.replace('analyzer.py', 'backend/page_treatment/analyzer.py')
command = command.replace('visualizer.py', 'backend/page_treatment/visualizer.py')
command = command.replace('picture_extractor.py', 'backend/page_treatment/picture_extractor.py')
try:
# Run the command synchronously for immediate feedback
process = subprocess.Popen(
command,
shell=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
text=True,
universal_newlines=True
)
stdout, stderr = process.communicate(input="n\n", timeout=60) # 60 second timeout
success = process.returncode == 0
return jsonify({
'success': success,
'output': stdout,
'error': stderr,
'returncode': process.returncode
})
except subprocess.TimeoutExpired:
return jsonify({
'success': False,
'error': "Command timed out after 60 seconds"
})
except Exception as e:
import traceback
return jsonify({
'success': False,
'error': str(e),
'traceback': traceback.format_exc()
})
except Exception as e:
logger.error(f"Error running manual command: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
# Batch processing endpoints
@app.route('/run-batch-processor', methods=['POST'])
def run_batch_processor():
"""Start a new batch processing job"""
if not batch_processing_available:
return jsonify({'success': False, 'error': 'Batch processing not available'}), 503
try:
pdf_file = request.form.get('pdf_file')
start_page = int(request.form.get('start_page', 1))
end_page = int(request.form.get('end_page', 1))
if not pdf_file:
return jsonify({'success': False, 'error': 'PDF file not specified'}), 400
if not os.path.exists(pdf_file):
return jsonify({'success': False, 'error': f'PDF file not found: {pdf_file}'}), 404
# Processing options
options = {
'adjust': request.form.get('adjust') == 'true',
'parallel': request.form.get('parallel') == 'true',
'generate_report': request.form.get('generate_report') == 'true'
}
# Generate batch ID
batch_id = str(uuid.uuid4())[:8]
# Start batch processing
if start_batch_processing(batch_id, pdf_file, start_page, end_page, options):
logger.info(f"Started batch processing with ID: {batch_id}")
return jsonify({
'success': True,
'batch_id': batch_id,
'message': f'Batch processing started for {end_page - start_page + 1} pages'
})
else:
return jsonify({'success': False, 'error': 'Failed to start batch processing'}), 500
except Exception as e:
logger.error(f"Error starting batch processor: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/batch-status/<batch_id>')
def batch_status(batch_id):
"""Get the status of a batch processing job"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
state = processor.get_state()
# Only return recent logs (last 20)
state['logs'] = state['logs'][-20:]
return jsonify(state)
except Exception as e:
logger.error(f"Error getting batch status: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/pause-batch/<batch_id>', methods=['POST'])
def pause_batch(batch_id):
"""Pause a batch processing job"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
processor.pause()
return jsonify({'success': True})
except Exception as e:
logger.error(f"Error pausing batch: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/resume-batch/<batch_id>', methods=['POST'])
def resume_batch(batch_id):
"""Resume a paused batch processing job"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
processor.resume()
return jsonify({'success': True})
except Exception as e:
logger.error(f"Error resuming batch: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/cancel-batch/<batch_id>', methods=['POST'])
def cancel_batch(batch_id):
"""Cancel a batch processing job"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
processor.cancel()
return jsonify({'success': True})
except Exception as e:
logger.error(f"Error cancelling batch: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/retry-page', methods=['POST'])
def retry_page():
"""Retry processing a single failed page"""
if not batch_processing_available:
return jsonify({'success': False, 'error': 'Batch processing not available'}), 503
try:
pdf_file = request.form.get('pdf_file')
page_num = int(request.form.get('page_num'))
adjust = request.form.get('adjust') == 'true'
if not pdf_file or not page_num:
return jsonify({'success': False, 'error': 'Missing parameters'}), 400
# Create a single-page batch for retry
batch_id = f"retry_{uuid.uuid4().hex[:8]}"
options = {'adjust': adjust, 'parallel': False, 'generate_report': False}
if start_batch_processing(batch_id, pdf_file, page_num, page_num, options):
# Wait for completion (since it's just one page)
processor = get_batch_processor(batch_id)
timeout = 60 # 60 seconds timeout
start_time = time.time()
while not processor.state['completed'] and (time.time() - start_time) < timeout:
time.sleep(0.5)
if processor.state['results']['successful'] > 0:
return jsonify({'success': True})
else:
return jsonify({'success': False, 'error': 'Page processing failed'})
else:
return jsonify({'success': False, 'error': 'Failed to start retry'}), 500
except Exception as e:
logger.error(f"Error retrying page: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/download-batch-results/<batch_id>')
def download_batch_results(batch_id):
"""Download all batch results as a ZIP file"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
# Create ZIP archive
zip_path = processor.create_zip_archive()
if zip_path and os.path.exists(zip_path):
return send_file(
zip_path,
mimetype='application/zip',
as_attachment=True,
download_name=f'batch_results_{batch_id}.zip'
)
else:
return jsonify({'error': 'Failed to create archive'}), 500
except Exception as e:
logger.error(f"Error downloading batch results: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/batch-report/<batch_id>')
def batch_report(batch_id):
"""View the batch processing report"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
report_path = processor.results_dir / "report.html"
if report_path.exists():
# Read and modify the HTML to fix image paths
with open(report_path, 'r') as f:
html_content = f.read()
# Replace relative image paths with absolute Flask routes
html_content = html_content.replace(
'src="visualization_page_',
f'src="/batch-report-image/{batch_id}/visualization_page_'
)
html_content = html_content.replace(
'href="visualization_page_',
f'href="/batch-report-image/{batch_id}/visualization_page_'
)
return html_content
else:
return jsonify({'error': 'Report not found'}), 404
except Exception as e:
logger.error(f"Error viewing batch report: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/batch-report-image/<batch_id>/<path:filename>')
def batch_report_image(batch_id, filename):
"""Serve images from batch report directory"""
if not batch_processing_available:
return jsonify({'error': 'Batch processing not available'}), 503
try:
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({'error': 'Batch not found'}), 404
image_path = processor.results_dir / filename
if image_path.exists() and image_path.is_file():
return send_file(image_path)
else:
return jsonify({'error': f'Image not found: {filename}'}), 404
except Exception as e:
logger.error(f"Error serving batch report image: {str(e)}")
return jsonify({'error': str(e)}), 500
@app.route('/open-results-folder', methods=['POST'])
def open_results_folder():
"""Open the results folder in the system file explorer"""
try:
results_path = os.path.abspath("results")
if sys.platform == 'darwin': # macOS
subprocess.run(['open', results_path])
elif sys.platform == 'win32': # Windows
os.startfile(results_path)
else: # Linux
subprocess.run(['xdg-open', results_path])
return jsonify({'success': True})
except Exception as e:
logger.error(f"Error opening results folder: {str(e)}")
return jsonify({'success': False, 'error': str(e)}), 500
@app.route('/debug-results')
def debug_results():
"""Debug endpoint to check results directory"""
try:
results_info = {
'cwd': os.getcwd(),
'results_paths_checked': []
}
# Check multiple possible results locations
possible_results_dirs = [
Path("results"),
Path.cwd() / "results",
Path(__file__).parent.parent / "results"
]
for results_dir in possible_results_dirs:
dir_info = {
'path': str(results_dir),
'absolute_path': str(results_dir.absolute()),
'exists': results_dir.exists(),
'files': []
}
if results_dir.exists():
try:
# List all files in the directory
files = list(results_dir.glob("*"))
dir_info['files'] = [f.name for f in files if f.is_file()][:20] # Limit to 20 files
except Exception as e:
dir_info['error'] = str(e)
results_info['results_paths_checked'].append(dir_info)
return jsonify(results_info)
except Exception as e:
return jsonify({'error': str(e)}), 500
# Cleanup task for batch processors
@app.route('/api/upload/analyze', methods=['POST'])
def api_upload_analyze():
"""
API endpoint for uploading and analyzing a PDF file.
Expects multipart/form-data with:
- file: PDF file
- page_num: (optional) Page number to analyze (default: 1)
- adjust: (optional) Auto-adjust coordinates (default: true)
"""
try:
# Check if file is in request
if 'file' not in request.files:
return jsonify(default_handler.create_multipart_response(
False, {'error': 'No file part in request'}
)), 400
file = request.files['file']
# Save uploaded file
success, result = default_handler.save_uploaded_file(file, permanent=True)
if not success:
return jsonify(default_handler.create_multipart_response(False, result)), 400
# Get processing parameters
page_num = request.form.get('page_num', '1')
adjust = request.form.get('adjust', 'true').lower() == 'true'
# Run analyzer
filepath = result['filepath']
command = f"python backend/page_treatment/analyzer.py --image {filepath} --page {page_num} --start-page {page_num} --end-page {page_num}"
# Generate task ID
task_id = f"api_analyzer_{int(time.time() * 1000)}"
# Initialize task result
task_results[task_id] = {
'success': None,
'output': "Processing uploaded file...",
'done': False,
'file_info': result
}
# Start background processing
thread = threading.Thread(target=run_command, args=(task_id, command))
thread.daemon = True
thread.start()
# Return response
return jsonify(default_handler.create_multipart_response(True, {
'task_id': task_id,
'file_info': result,
'message': f"Processing started for {result['filename']}, page {page_num}"
}))
except Exception as e:
logger.error(f"Error in api_upload_analyze: {str(e)}")
return jsonify(default_handler.create_multipart_response(
False, {'error': str(e)}
)), 500
@app.route('/api/upload/process', methods=['POST'])
def api_upload_process():
"""
API endpoint for uploading and processing a PDF through all stages.
Expects multipart/form-data with:
- file: PDF file
- page_num: (optional) Page number (default: 1)
- adjust: (optional) Auto-adjust coordinates (default: true)
- stages: (optional) Comma-separated list of stages to run (default: analyzer,visualizer,extractor)
"""
try:
# Check if file is in request
if 'file' not in request.files:
return jsonify(default_handler.create_multipart_response(
False, {'error': 'No file part in request'}
)), 400
file = request.files['file']
# Save uploaded file
success, result = default_handler.save_uploaded_file(file, permanent=True)
if not success:
return jsonify(default_handler.create_multipart_response(False, result)), 400
# Get processing parameters
page_num = request.form.get('page_num', '1')
adjust = request.form.get('adjust', 'true').lower() == 'true'
stages = request.form.get('stages', 'analyzer,visualizer,extractor').split(',')
# Create a combined task ID
task_id = f"api_process_{int(time.time() * 1000)}"
# Process through all stages
filepath = result['filepath']
processing_info = {
'task_id': task_id,
'file_info': result,
'page_num': page_num,
'adjust': adjust,
'stages': stages,
'current_stage': None,
'completed_stages': [],
'results': {}
}
# Start processing in background
def process_all_stages():
try:
# Run analyzer if requested
if 'analyzer' in stages:
processing_info['current_stage'] = 'analyzer'
command = f"python backend/page_treatment/analyzer.py --image {filepath} --page {page_num} --start-page {page_num} --end-page {page_num}"
process = subprocess.run(
command,
shell=True,
capture_output=True,
text=True,
input="n\n"
)
if process.returncode == 0:
processing_info['completed_stages'].append('analyzer')
processing_info['results']['analyzer'] = {
'success': True,
'doctags_file': 'results/output.doctags.txt'
}
else:
processing_info['results']['analyzer'] = {
'success': False,
'error': process.stderr
}
return
# Run visualizer if requested
if 'visualizer' in stages:
processing_info['current_stage'] = 'visualizer'
command = f"python backend/page_treatment/visualizer.py --doctags results/output.doctags.txt --pdf {filepath} --page {page_num}"
if adjust:
command += " --adjust"
process = subprocess.run(
command,
shell=True,
capture_output=True,
text=True
)
if process.returncode == 0:
processing_info['completed_stages'].append('visualizer')
processing_info['results']['visualizer'] = {
'success': True,
'visualization_file': f'results/visualization_page_{page_num}.png'
}
else:
processing_info['results']['visualizer'] = {
'success': False,
'error': process.stderr
}
return
# Run extractor if requested
if 'extractor' in stages:
processing_info['current_stage'] = 'extractor'
command = f"python backend/page_treatment/picture_extractor.py --doctags results/output.doctags.txt --pdf {filepath} --page {page_num}"
if adjust:
command += " --adjust"
process = subprocess.run(
command,
shell=True,
capture_output=True,
text=True
)
if process.returncode == 0:
processing_info['completed_stages'].append('extractor')
# Count extracted images
pics_dir = Path("results") / "pictures"
image_count = len(list(pics_dir.glob("*.png"))) if pics_dir.exists() else 0
processing_info['results']['extractor'] = {
'success': True,
'images_extracted': image_count,
'pictures_folder': 'results/pictures'
}
else:
processing_info['results']['extractor'] = {
'success': False,
'error': process.stderr
}
processing_info['current_stage'] = 'completed'
except Exception as e:
processing_info['current_stage'] = 'error'
processing_info['error'] = str(e)
# Store processing info
task_results[task_id] = processing_info
# Start background thread
thread = threading.Thread(target=process_all_stages)
thread.daemon = True
thread.start()
# Return response
return jsonify(default_handler.create_multipart_response(True, {
'task_id': task_id,
'file_info': result,
'stages': stages,
'message': f"Processing started for {result['filename']}, page {page_num}"
}))
except Exception as e:
logger.error(f"Error in api_upload_process: {str(e)}")
return jsonify(default_handler.create_multipart_response(
False, {'error': str(e)}
)), 500
@app.route('/api/upload/batch', methods=['POST'])
def api_upload_batch():
"""
API endpoint for uploading and batch processing a PDF.
Expects multipart/form-data with:
- file: PDF file
- start_page: (optional) Start page (default: 1)
- end_page: (optional) End page (default: all)
- parallel: (optional) Enable parallel processing (default: true)
- adjust: (optional) Auto-adjust coordinates (default: true)
"""
if not batch_processing_available:
return jsonify(default_handler.create_multipart_response(
False, {'error': 'Batch processing not available'}
)), 503
try:
# Check if file is in request
if 'file' not in request.files:
return jsonify(default_handler.create_multipart_response(
False, {'error': 'No file part in request'}
)), 400
file = request.files['file']
# Save uploaded file
success, result = default_handler.save_uploaded_file(file, permanent=True)
if not success:
return jsonify(default_handler.create_multipart_response(False, result)), 400
# Get PDF info
filepath = result['filepath']
try:
from pdf2image.pdf2image import pdfinfo_from_path
info = pdfinfo_from_path(filepath)
total_pages = info["Pages"]
except Exception as e:
return jsonify(default_handler.create_multipart_response(
False, {'error': f'Failed to read PDF info: {str(e)}'}
)), 400
# Get processing parameters
start_page = int(request.form.get('start_page', '1'))
end_page = int(request.form.get('end_page', str(total_pages)))
parallel = request.form.get('parallel', 'true').lower() == 'true'
adjust = request.form.get('adjust', 'true').lower() == 'true'
# Validate page range
start_page = max(1, min(start_page, total_pages))
end_page = max(start_page, min(end_page, total_pages))
# Start batch processing
batch_id = f"api_{uuid.uuid4().hex[:8]}"
options = {
'adjust': adjust,
'parallel': parallel,
'generate_report': True
}
if start_batch_processing(batch_id, filepath, start_page, end_page, options):
return jsonify(default_handler.create_multipart_response(True, {
'batch_id': batch_id,
'file_info': result,
'total_pages': total_pages,
'processing_pages': f"{start_page}-{end_page}",
'page_count': end_page - start_page + 1,
'message': f'Batch processing started for {result["filename"]}'
}))
else:
return jsonify(default_handler.create_multipart_response(
False, {'error': 'Failed to start batch processing'}
)), 500
except Exception as e:
logger.error(f"Error in api_upload_batch: {str(e)}")
return jsonify(default_handler.create_multipart_response(
False, {'error': str(e)}
)), 500
@app.route('/api/task/<task_id>', methods=['GET'])
def api_task_status(task_id):
"""Get status of a processing task"""
if task_id not in task_results:
return jsonify({
'success': False,
'error': 'Task not found'
}), 404
return jsonify({
'success': True,
'task': task_results[task_id]
})
@app.route('/api/batch/<batch_id>', methods=['GET'])
def api_batch_status(batch_id):
"""Get status of a batch processing job"""
if not batch_processing_available:
return jsonify({
'success': False,
'error': 'Batch processing not available'
}), 503
processor = get_batch_processor(batch_id)
if not processor:
return jsonify({
'success': False,
'error': 'Batch not found'
}), 404
state = processor.get_state()
return jsonify({
'success': True,
'batch': state
})
@app.route('/api/cleanup', methods=['POST'])
def api_cleanup():
"""Cleanup old uploaded files"""
try:
max_age_hours = int(request.json.get('max_age_hours', 24))
folder = request.json.get('folder', 'both')
removed_count = default_handler.cleanup_old_files(max_age_hours, folder)
return jsonify({
'success': True,
'removed_files': removed_count,
'message': f'Removed {removed_count} old files'
})
except Exception as e:
return jsonify({
'success': False,
'error': str(e)
}), 500
# Add this streamlined endpoint to your app.py
@app.route('/api/upload/doctags', methods=['POST'])
def api_upload_doctags():
"""
Simple API endpoint for uploading a PDF and getting DocTags output.
Automatically cleans up the uploaded file after processing.
Expects multipart/form-data with:
- file: PDF file
- page_num: (optional) Page number to analyze (default: 1)
Returns JSON with:
- success: boolean
- filename: original filename
- page: page number processed
- doctags: the DocTags content
"""
uploaded_file_path = None
try:
# Check if file is in request
if 'file' not in request.files:
return jsonify({'success': False, 'error': 'No file part in request'}), 400
file = request.files['file']
# Save uploaded file temporarily
success, result = default_handler.save_uploaded_file(file, permanent=True)
if not success:
return jsonify({'success': False, 'error': result.get('error', 'Failed to save file')}), 400
# Store the uploaded file path for cleanup
uploaded_file_path = result['filepath']
# Get page number
page_num = request.form.get('page_num', '1')
# Run analyzer directly (synchronously)
command = f"python backend/page_treatment/analyzer.py --image {uploaded_file_path} --page {page_num} --start-page {page_num} --end-page {page_num}"
try:
# Run the command with timeout
process = subprocess.run(
command,
shell=True,
capture_output=True,
text=True,
input="n\n",
timeout=60 # 60 second timeout
)
if process.returncode != 0:
error_msg = process.stderr or 'Analyzer failed'
logger.error(f"Analyzer error: {error_msg}")
return jsonify({
'success': False,
'error': 'Analyzer failed',
'details': error_msg
}), 500
# Check if doctags file was created
doctags_path = Path("results") / "output.doctags.txt"
if not doctags_path.exists():
return jsonify({
'success': False,
'error': 'DocTags file not generated'
}), 500
# Read the doctags content
with open(doctags_path, 'r', encoding='utf-8') as f:
doctags_content = f.read()
# Prepare successful response
response = {
'success': True,
'filename': result['filename'],
'page': int(page_num),
'doctags': doctags_content
}
# Clean up the uploaded file
try:
if uploaded_file_path and os.path.exists(uploaded_file_path):
os.remove(uploaded_file_path)
logger.info(f"Cleaned up uploaded file: {uploaded_file_path}")
except Exception as cleanup_error:
logger.error(f"Error cleaning up file: {cleanup_error}")
# Don't fail the request due to cleanup error
return jsonify(response)
except subprocess.TimeoutExpired:
return jsonify({
'success': False,
'error': 'Processing timeout - page took too long to analyze'
}), 500
except Exception as e:
logger.error(f"Processing error: {str(e)}")
return jsonify({
'success': False,
'error': f'Processing error: {str(e)}'
}), 500
except Exception as e:
logger.error(f"Error in api_upload_doctags: {str(e)}")
return jsonify({
'success': False,
'error': str(e)
}), 500
finally:
# Ensure cleanup happens even if there's an error
try:
if uploaded_file_path and os.path.exists(uploaded_file_path):
os.remove(uploaded_file_path)
logger.info(f"Cleaned up uploaded file in finally block: {uploaded_file_path}")
except Exception as cleanup_error:
logger.error(f"Error in finally cleanup: {cleanup_error}")
# Add periodic cleanup task
def periodic_cleanup():
"""Run cleanup every hour"""
while True:
time.sleep(3600) # Wait 1 hour
try:
removed = default_handler.cleanup_old_files(24, 'both')
if removed > 0:
logger.info(f"Periodic cleanup removed {removed} old files")
except Exception as e:
logger.error(f"Error in periodic cleanup: {str(e)}")
# Start cleanup thread
cleanup_thread = threading.Thread(target=periodic_cleanup)
cleanup_thread.daemon = True
cleanup_thread.start()
def cleanup_task():
"""Periodic cleanup of old batch processors"""
if not batch_processing_available:
return
while True:
time.sleep(3600) # Run every hour
try:
cleanup_old_batches(24) # Clean up batches older than 24 hours
except Exception as e:
logger.error(f"Error in cleanup task: {str(e)}")
# Start cleanup thread when app starts (only if batch processing is available)
if batch_processing_available:
cleanup_thread = threading.Thread(target=cleanup_task)
cleanup_thread.daemon = True
cleanup_thread.start()
if __name__ == '__main__':
# Ensure folders exist
ensure_results_folder()
ensure_frontend_folders()
# Check environment
if not batch_processing_available:
logger.warning("batch_processor.py not found. Batch processing features will be disabled.")
else:
logger.info("Batch processing features enabled.")
app.run(debug=True, host='127.0.0.1', port=5000)