261 lines
8.5 KiB
Python
261 lines
8.5 KiB
Python
#!/usr/bin/env python3
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"""
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Auto-scanner script for Brother DS mobile scanners.
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Auto-detects when a document is placed and starts scanning automatically.
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"""
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import os
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import sys
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import subprocess
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import time
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import json
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from datetime import datetime
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from pathlib import Path
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from typing import Optional, Dict
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# Add parent directory to path for config import
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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try:
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import requests
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from dotenv import load_dotenv
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import yaml
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except ImportError as e:
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print(f"Missing dependency: {e}")
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print("Run: pip install -r requirements.txt")
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sys.exit(1)
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class ScannerAuto:
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"""Automated Brother scanner with LLM-powered naming."""
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def __init__(self, config_path: str = "config.yml"):
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self.load_config(config_path)
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self.scan_count = 0
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def load_config(self, config_path: str):
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"""Load configuration from YAML file."""
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with open(config_path, 'r') as f:
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config = yaml.safe_load(f)
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self.scan_dir = Path(config.get('scan_dir', 'scans'))
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self.scan_dir.mkdir(parents=True, exist_ok=True)
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self.brother_cmd = config.get('brother_cmd', 'brscan-skey -s')
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self.api_url = config.get('api_url', 'http://localhost:11434/v1/chat/completions')
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self.api_key = config.getenv('API_KEY', '')
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self.model = config.get('model', 'llama3')
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self.log_file = self.scan_dir / 'scan_log.json'
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def log_scan(self, original_name: str, final_name: str):
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"""Log scan metadata."""
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log_entry = {
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'timestamp': datetime.now().isoformat(),
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'original_name': original_name,
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'final_name': final_name
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}
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if self.log_file.exists():
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with open(self.log_file, 'r') as f:
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logs = json.load(f)
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else:
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logs = []
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logs.append(log_entry)
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with open(self.log_file, 'w') as f:
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json.dump(logs, f, indent=2)
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def detect_document(self) -> bool:
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"""
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Detect if a document is placed in the scanner.
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Returns True if document detected, False otherwise.
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"""
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try:
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# Brother scanner detection
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result = subprocess.run(
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self.brother_cmd,
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shell=True,
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capture_output=True,
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text=True,
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timeout=5
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)
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# Check if scanner reports a document is ready
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# This may vary based on Brother scanner model and tools
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if result.returncode == 0 and ('ready' in result.stdout.lower() or 'scan' in result.stdout.lower()):
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print(f"✓ Document detected by scanner")
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return True
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return False
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except subprocess.TimeoutExpired:
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print("✗ Scanner timeout")
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return False
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except Exception as e:
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print(f"✗ Scanner detection error: {e}")
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return False
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def start_scan(self) -> Optional[str]:
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"""Start scanning and return the saved filename."""
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timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
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# Create output filename (temporary until LLM generates title)
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temp_name = f"scan_{timestamp}.pdf"
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output_path = self.scan_dir / temp_name
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try:
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# Start scanning using Brother CLI
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scan_cmd = f"{self.brother_cmd} -f {output_path}"
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print(f"→ Starting scan: {scan_cmd}")
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result = subprocess.run(
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scan_cmd,
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shell=True,
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capture_output=True,
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text=True,
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timeout=60 # 1 minute timeout for scan
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)
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if result.returncode == 0 and output_path.exists():
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file_size = output_path.stat().st_size
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print(f"✓ Scan completed: {temp_name} ({file_size} bytes)")
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# Use LLM to generate meaningful title
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title = self.generate_title(output_path)
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# Rename with final title
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final_name = f"{title} - {timestamp}.pdf"
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final_path = self.scan_dir / final_name
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output_path.rename(final_path)
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self.log_scan(temp_name, final_name)
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print(f"✓ Saved as: {final_name}")
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return final_name
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else:
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print(f"✗ Scan failed: {result.stderr}")
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return None
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except subprocess.TimeoutExpired:
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print("✗ Scan timeout")
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return None
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except Exception as e:
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print(f"✗ Scan error: {e}")
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return None
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def generate_title(self, pdf_path: Path) -> str:
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"""Generate a meaningful title using LLM."""
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if not self.api_key:
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# Fallback to basic naming if no API key
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return "document"
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try:
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# Read PDF content (first 10 pages, or just metadata)
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# This is a simplified version - in production you might want to use pdfminer or similar
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print("→ Generating title with LLM...")
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# Simple prompt for LLM
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prompt = f"""
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Analyze this document and suggest a concise, descriptive title (no more than 5 words).
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Focus on the document type (invoice, receipt, contract, letter, etc.).
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Return only the title, no other text.
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"""
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response = requests.post(
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self.api_url,
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headers={
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"Authorization": f"Bearer {self.api_key}",
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"Content-Type": "application/json"
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},
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json={
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"model": self.model,
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"messages": [
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{"role": "system", "content": "You are a helpful assistant that generates document titles."},
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{"role": "user", "content": prompt}
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],
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"max_tokens": 50,
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"temperature": 0.3
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},
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timeout=30
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)
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if response.status_code == 200:
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title = response.json()['choices'][0]['message']['content'].strip()
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# Clean up title (remove quotes, extra whitespace)
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title = title.strip('"\'').strip()
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print(f"✓ LLM title: {title}")
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return title
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else:
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print(f"✗ LLM API error: {response.status_code}")
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return "document"
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except Exception as e:
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print(f"✗ LLM error: {e}")
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return "document"
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def run(self, max_scans: int = None):
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"""Main loop - auto-detects and scans documents."""
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print("=" * 60)
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print("🤖 Brother Scanner - Auto-Detect Mode")
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print("=" * 60)
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print(f"📁 Scan directory: {self.scan_dir}")
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print(f"🔄 Brother command: {self.brother_cmd}")
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print(f"🧠 LLM API: {self.api_url}")
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print("=" * 60)
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if max_scans:
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print(f"⏱️ Max scans: {max_scans}")
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print("=" * 60)
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self.scan_count = 0
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try:
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while True:
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if max_scans and self.scan_count >= max_scans:
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print(f"\n✓ Completed {max_scans} scans")
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break
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print(f"\n[{datetime.now().strftime('%H:%M:%S')}] Waiting for document...")
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# Wait for document detection
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while not self.detect_document():
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time.sleep(2)
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# Document detected - start scanning
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self.scan_count += 1
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self.start_scan()
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except KeyboardInterrupt:
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print(f"\n\n✓ Stopped after {self.scan_count} scans")
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except Exception as e:
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print(f"\n✗ Error: {e}")
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def main():
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"""Main entry point."""
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import argparse
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parser = argparse.ArgumentParser(description='Auto-scan Brother scanner with LLM naming')
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parser.add_argument('--config', default='config.yml', help='Config file path')
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parser.add_argument('--max-scans', type=int, help='Maximum number of scans')
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parser.add_argument('--test', action='store_true', help='Test detection without scanning')
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args = parser.parse_args()
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scanner = ScannerAuto(args.config)
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if args.test:
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print("🔍 Testing scanner detection...")
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if scanner.detect_document():
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print("✓ Scanner detected")
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else:
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print("✗ No document detected")
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else:
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scanner.run(args.max_scans)
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if __name__ == '__main__':
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main() |