prezenta_work/app.py

#App version 2.7 - Fixed auto-update path detection for case-sensitive file systems
import os
import sys
import subprocess
import importlib
import importlib.util
import stat
import pwd
import grp

def install_package_from_wheel(wheel_path, package_name):
    """
    Install a Python package from a wheel file
    """
    try:
        print(f"Installing {package_name} from {wheel_path}...")
        result = subprocess.run([
            sys.executable, "-m", "pip", "install", wheel_path,
            "--no-index", "--no-deps", "--break-system-packages",
            "--no-warn-script-location", "--force-reinstall"
        ], capture_output=True, text=True, timeout=60)
        
        if result.returncode == 0:
            print(f"✓ {package_name} installed successfully")
            return True
        else:
            print(f"✗ Failed to install {package_name}: {result.stderr}")
            return False
    except Exception as e:
        print(f"✗ Error installing {package_name}: {e}")
        return False

def check_and_install_dependencies():
    """
    Check if required packages are installed and install them from local repository if needed
    """
    print("Checking and installing dependencies...")
    
    # Define required packages and their corresponding wheel files
    required_packages = {
        'rdm6300': 'rdm6300-0.1.1-py3-none-any.whl',
        'gpiozero': None,  # System package, should be pre-installed
        'requests': 'requests-2.32.3-py3-none-any.whl',
        'aiohttp': 'aiohttp-3.11.18-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
        'flask': None,  # Will try to install if needed
        'urllib3': 'urllib3-2.3.0-py3-none-any.whl',
        'certifi': 'certifi-2025.1.31-py3-none-any.whl',
        'charset_normalizer': 'charset_normalizer-3.4.1-py3-none-any.whl',
        'idna': 'idna-3.10-py3-none-any.whl',
        'multidict': 'multidict-6.4.3-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
        'aiosignal': 'aiosignal-1.3.2-py2.py3-none-any.whl',
        'frozenlist': 'frozenlist-1.6.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
        'attrs': 'attrs-25.3.0-py3-none-any.whl',
        'yarl': 'yarl-1.20.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl',
        'aiohappyeyeballs': 'aiohappyeyeballs-2.6.1-py3-none-any.whl',
        'propcache': 'propcache-0.3.1-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl'
    }
    
    repository_path = "./Files/reposytory"
    missing_packages = []
    
    # Check each required package
    for package_name, wheel_file in required_packages.items():
        try:
            # Use importlib to check if package exists
            spec = importlib.util.find_spec(package_name)
            if spec is not None:
                print(f"✓ {package_name} is already installed")
            else:
                raise ImportError(f"Package {package_name} not found")
                
        except ImportError:
            print(f"✗ {package_name} is not installed")
            missing_packages.append((package_name, wheel_file))
        except Exception as e:
            print(f"✗ Error checking {package_name}: {e}")
            missing_packages.append((package_name, wheel_file))
    
    # Install missing packages
    if missing_packages:
        print(f"\nInstalling {len(missing_packages)} missing packages...")
        
        for package_name, wheel_file in missing_packages:
            if wheel_file is None:
                # Try to install via pip from internet or system packages
                try:
                    print(f"Attempting to install {package_name} via pip...")
                    result = subprocess.run([
                        sys.executable, "-m", "pip", "install", package_name,
                        "--break-system-packages", "--no-warn-script-location"
                    ], capture_output=True, text=True, timeout=120)
                    
                    if result.returncode == 0:
                        print(f"✓ {package_name} installed via pip")
                    else:
                        print(f"✗ Could not install {package_name} via pip: {result.stderr}")
                        # Try system package manager for common packages
                        if package_name in ['flask', 'gpiozero']:
                            try:
                                print(f"Trying to install {package_name} via apt...")
                                apt_name = f"python3-{package_name.replace('_', '-')}"
                                apt_result = subprocess.run([
                                    "sudo", "apt", "install", "-y", apt_name
                                ], capture_output=True, text=True, timeout=300)
                                if apt_result.returncode == 0:
                                    print(f"✓ {package_name} installed via apt")
                                else:
                                    print(f"✗ Could not install {package_name} via apt")
                            except Exception as apt_e:
                                print(f"✗ Error installing {package_name} via apt: {apt_e}")
                except Exception as e:
                    print(f"✗ Error installing {package_name} via pip: {e}")
                continue
            
            wheel_path = os.path.join(repository_path, wheel_file)
            
            if not os.path.exists(wheel_path):
                print(f"✗ Wheel file not found: {wheel_path}")
                continue
            
            # Install the package
            install_package_from_wheel(wheel_path, package_name)
    
    print("Dependency check completed.\n")

# Run dependency check before importing anything else
try:
    check_and_install_dependencies()
except Exception as e:
    print(f"Warning: Dependency check failed: {e}")
    print("Continuing with existing packages...")

def safe_import(module_name, package_name=None):
    """
    Safely import a module with error handling
    """
    try:
        if package_name:
            module = __import__(package_name)
            return getattr(module, module_name)
        else:
            return __import__(module_name)
    except ImportError as e:
        print(f"Warning: Could not import {module_name}: {e}")
        return None

# Now import required modules with fallbacks
rdm6300 = safe_import('rdm6300')
if rdm6300 is None:
    print("ERROR: rdm6300 is required for this application to work!")
    print("Please ensure rdm6300 is installed from the repository.")
    sys.exit(1)

# Import other required modules
import time
import logging

# Try to import GPIO-related modules
try:
    from gpiozero import OutputDevice
    print("✓ gpiozero imported successfully")
except ImportError as e:
    print(f"Warning: Could not import gpiozero: {e}")
    print("LED functionality will be disabled")
    # Create a dummy OutputDevice class
    class OutputDevice:
        def __init__(self, pin):
            self.pin = pin
        def on(self):
            print(f"LED {self.pin} would turn ON")
        def off(self):
            print(f"LED {self.pin} would turn OFF")

from multiprocessing import Process

# Import network-related modules
try:
    import requests
    print("✓ requests imported successfully")
except ImportError as e:
    print(f"ERROR: requests is required: {e}")
    sys.exit(1)

import threading
import urllib.parse
from datetime import datetime, timedelta
import socket
import signal

# Import async modules
try:
    import aiohttp
    import asyncio
    print("✓ aiohttp and asyncio imported successfully")
except ImportError as e:
    print(f"Warning: Could not import aiohttp: {e}")
    print("Async functionality may be limited")
    import asyncio

# Import Flask for command server
try:
    from flask import Flask, request, jsonify
    print("✓ Flask imported successfully")
    FLASK_AVAILABLE = True
except ImportError as e:
    print(f"Warning: Could not import Flask: {e}")
    print("Command server functionality will be disabled")
    FLASK_AVAILABLE = False
    # Create dummy Flask classes
    class Flask:
        def __init__(self, name):
            pass
        def route(self, *args, **kwargs):
            def decorator(f):
                return f
            return decorator
        def run(self, *args, **kwargs):
            pass
    
    def request():
        pass
    
    def jsonify(data):
        return data

import json

def check_system_requirements():
    """
    Check and set up system requirements for the application
    """
    print("Checking system requirements...")
    
    # 1. Check and install required system packages
    system_packages = {
        'sshpass': 'sshpass_1.09-1_armhf.deb'  # Required for auto-update functionality
    }
    
    for package, deb_file in system_packages.items():
        try:
            result = subprocess.run(['which', package], capture_output=True, text=True)
            if result.returncode == 0:
                print(f"✓ {package} is installed")
            else:
                print(f"Installing {package}...")
                
                # Try online installation first
                try:
                    install_result = subprocess.run(['sudo', 'apt', 'update'], capture_output=True, text=True, timeout=120)
                    install_result = subprocess.run(['sudo', 'apt', 'install', '-y', package], 
                                                  capture_output=True, text=True, timeout=300)
                    if install_result.returncode == 0:
                        print(f"✓ {package} installed successfully (online)")
                        continue
                    else:
                        print(f"Online installation failed, trying offline...")
                except Exception as online_error:
                    print(f"Online installation failed: {online_error}, trying offline...")
                
                # Try offline installation from local .deb file
                deb_path = f"./Files/system_packages/{deb_file}"
                if os.path.exists(deb_path):
                    try:
                        print(f"Installing {package} from local package: {deb_path}")
                        offline_result = subprocess.run(['sudo', 'dpkg', '-i', deb_path], 
                                                      capture_output=True, text=True, timeout=120)
                        if offline_result.returncode == 0:
                            print(f"✓ {package} installed successfully (offline)")
                        else:
                            print(f"✗ Offline installation failed: {offline_result.stderr}")
                            # Try to fix dependencies
                            print("Attempting to fix dependencies...")
                            subprocess.run(['sudo', 'apt', '--fix-broken', 'install', '-y'], 
                                         capture_output=True, text=True, timeout=300)
                    except Exception as offline_error:
                        print(f"✗ Offline installation error: {offline_error}")
                else:
                    print(f"✗ Local package not found: {deb_path}")
                    print(f"  To add offline support, download with: apt download {package}")
                    
        except Exception as e:
            print(f"Warning: Could not check/install {package}: {e}")
    
    # 2. Check and create required directories
    required_dirs = ['./data', './Files', './Files/reposytory', './Files/system_packages']
    for dir_path in required_dirs:
        try:
            os.makedirs(dir_path, exist_ok=True)
            print(f"✓ Directory ensured: {dir_path}")
        except Exception as e:
            print(f"✗ Failed to create directory {dir_path}: {e}")
            return False
    
    # 2. Check required files and create defaults if missing
    required_files = {
        './data/idmasa.txt': 'noconfig',
        './data/log.txt': '',
        './data/tag.txt': '',
        './data/device_info.txt': 'unknown-device\n127.0.0.1\n'
    }
    
    for file_path, default_content in required_files.items():
        try:
            if not os.path.exists(file_path):
                with open(file_path, 'w') as f:
                    f.write(default_content)
                print(f"✓ Created default file: {file_path}")
            else:
                print(f"✓ File exists: {file_path}")
        except Exception as e:
            print(f"✗ Failed to create file {file_path}: {e}")
    
    # 3. Check file permissions
    try:
        for file_path in required_files.keys():
            if os.path.exists(file_path):
                # Ensure read/write permissions for the application
                os.chmod(file_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
        print("✓ File permissions set correctly")
    except Exception as e:
        print(f"Warning: Could not set file permissions: {e}")
    
    return True

def check_port_capabilities():
    """
    Check if the application can bind to port 80 and set up capabilities if needed
    """
    print("Checking port 80 capabilities...")
    
    try:
        # Check if we're running as root
        if os.geteuid() == 0:
            print("✓ Running as root - port 80 access available")
            return True
        
        # Check if capabilities are set
        python_path = sys.executable
        result = subprocess.run(['getcap', python_path], capture_output=True, text=True)
        
        if 'cap_net_bind_service=ep' in result.stdout:
            print("✓ Port binding capabilities already set")
            return True
        
        # Try to set capabilities
        print("Setting up port 80 binding capabilities...")
        setup_script = './setup_port_capability.sh'
        
        if os.path.exists(setup_script):
            result = subprocess.run(['sudo', 'bash', setup_script], capture_output=True, text=True)
            if result.returncode == 0:
                print("✓ Port capabilities set successfully")
                return True
            else:
                print(f"✗ Failed to set capabilities: {result.stderr}")
        else:
            # Create the setup script if it doesn't exist
            script_content = f'''#!/bin/bash
# Set port binding capability for Python to allow port 80 access
echo "Setting port binding capability for Python..."
sudo setcap cap_net_bind_service=ep {python_path}
echo "Capability set successfully"
'''
            try:
                with open(setup_script, 'w') as f:
                    f.write(script_content)
                os.chmod(setup_script, stat.S_IRWXU | stat.S_IRGRP | stat.S_IROTH)
                
                result = subprocess.run(['sudo', 'bash', setup_script], capture_output=True, text=True)
                if result.returncode == 0:
                    print("✓ Port capabilities set successfully")
                    return True
                else:
                    print(f"✗ Failed to set capabilities: {result.stderr}")
            except Exception as e:
                print(f"✗ Failed to create setup script: {e}")
        
    except Exception as e:
        print(f"Warning: Could not check port capabilities: {e}")
    
    print("Warning: Port 80 may not be accessible. App will try to run on default port.")
    return False

def check_hardware_interfaces():
    """
    Check hardware interfaces (UART/Serial) required for RFID reader
    """
    print("Checking hardware interfaces...")
    
    # Check for serial devices
    serial_devices = ['/dev/ttyS0', '/dev/ttyAMA0', '/dev/ttyUSB0']
    available_devices = []
    
    for device in serial_devices:
        if os.path.exists(device):
            try:
                # Check if we can access the device
                with open(device, 'r'):
                    pass
                available_devices.append(device)
                print(f"✓ Serial device available: {device}")
            except PermissionError:
                print(f"✗ Permission denied for {device}. Adding user to dialout group...")
                try:
                    # Add current user to dialout group for serial access
                    username = pwd.getpwuid(os.getuid()).pw_name
                    subprocess.run(['sudo', 'usermod', '-a', '-G', 'dialout', username], 
                                 capture_output=True, text=True)
                    print(f"✓ User {username} added to dialout group (reboot may be required)")
                    available_devices.append(device)
                except Exception as e:
                    print(f"✗ Failed to add user to dialout group: {e}")
            except Exception as e:
                print(f"Warning: Could not test {device}: {e}")
    
    if not available_devices:
        print("✗ No serial devices found. RFID reader may not work.")
        # Enable UART if we're on Raspberry Pi
        try:
            config_file = '/boot/config.txt'
            if os.path.exists(config_file):
                print("Attempting to enable UART in Raspberry Pi config...")
                result = subprocess.run(['sudo', 'raspi-config', 'nonint', 'do_serial', '0'], 
                                      capture_output=True, text=True)
                if result.returncode == 0:
                    print("✓ UART enabled in config (reboot required)")
                else:
                    print("Warning: Could not enable UART automatically")
        except Exception as e:
            print(f"Warning: Could not configure UART: {e}")
        return False
    
    return True

def check_network_connectivity():
    """
    Check network connectivity and DNS resolution
    """
    print("Checking network connectivity...")
    
    try:
        # Test basic connectivity
        result = subprocess.run(['ping', '-c', '1', '8.8.8.8'], 
                              capture_output=True, text=True, timeout=5)
        if result.returncode == 0:
            print("✓ Internet connectivity available")
            
            # Test DNS resolution
            try:
                import socket
                socket.gethostbyname('google.com')
                print("✓ DNS resolution working")
                return True
            except socket.gaierror:
                print("✗ DNS resolution failed")
                return False
        else:
            print("✗ No internet connectivity")
            return False
            
    except subprocess.TimeoutExpired:
        print("✗ Network timeout")
        return False
    except Exception as e:
        print(f"Warning: Could not test network: {e}")
        return False

def initialize_gpio_permissions():
    """
    Set up GPIO permissions for LED control
    """
    print("Setting up GPIO permissions...")
    
    try:
        # Add user to gpio group if it exists
        username = pwd.getpwuid(os.getuid()).pw_name
        
        # Check if gpio group exists
        try:
            grp.getgrnam('gpio')
            subprocess.run(['sudo', 'usermod', '-a', '-G', 'gpio', username], 
                         capture_output=True, text=True)
            print(f"✓ User {username} added to gpio group")
        except KeyError:
            print("Warning: gpio group not found - GPIO access may be limited")
        
        # Set up GPIO access via /dev/gpiomem if available
        gpio_devices = ['/dev/gpiomem', '/dev/mem']
        for device in gpio_devices:
            if os.path.exists(device):
                print(f"✓ GPIO device available: {device}")
                break
        else:
            print("Warning: No GPIO devices found")
            
    except Exception as e:
        print(f"Warning: Could not set up GPIO permissions: {e}")

def perform_system_initialization():
    """
    Perform complete system initialization for first run
    """
    print("=" * 60)
    print("SYSTEM INITIALIZATION - Preparing for first run")
    print("=" * 60)
    
    initialization_steps = [
        ("System Requirements", check_system_requirements),
        ("Port Capabilities", check_port_capabilities),
        ("Hardware Interfaces", check_hardware_interfaces),
        ("GPIO Permissions", initialize_gpio_permissions),
        ("Network Connectivity", check_network_connectivity)
    ]
    
    success_count = 0
    total_steps = len(initialization_steps)
    
    for step_name, step_function in initialization_steps:
        print(f"\n--- {step_name} ---")
        try:
            if step_function():
                success_count += 1
                print(f"✓ {step_name} completed successfully")
            else:
                print(f"⚠ {step_name} completed with warnings")
        except Exception as e:
            print(f"✗ {step_name} failed: {e}")
    
    print("\n" + "=" * 60)
    print(f"INITIALIZATION COMPLETE: {success_count}/{total_steps} steps successful")
    print("=" * 60)
    
    if success_count < total_steps:
        print("Warning: Some initialization steps failed. Application may have limited functionality.")
        print("Check the messages above for details.")
    
    return success_count >= (total_steps - 1)  # Allow one failure

#configurare variabile
def get_device_info():
    """
    Get hostname and device IP with file-based fallback to avoid socket errors
    """
    config_file = "./data/device_info.txt"
    hostname = None
    device_ip = None
    
    # Try to get current hostname and IP
    try:
        hostname = socket.gethostname()
        device_ip = socket.gethostbyname(hostname)
        print(f"Successfully resolved - Hostname: {hostname}, IP: {device_ip}")
        
        # Save the working values to file for future fallback
        try:
            os.makedirs("./data", exist_ok=True)  # Create data directory if it doesn't exist
            with open(config_file, "w") as f:
                f.write(f"{hostname}\n{device_ip}\n")
            print(f"Saved device info to {config_file}")
        except Exception as e:
            print(f"Warning: Could not save device info to file: {e}")
            
        return hostname, device_ip
        
    except socket.gaierror as e:
        print(f"Socket error occurred: {e}")
        print("Attempting to load device info from file...")
        
        # Try to load from file
        try:
            with open(config_file, "r") as f:
                lines = f.read().strip().split('\n')
                if len(lines) >= 2:
                    hostname = lines[0].strip()
                    device_ip = lines[1].strip()
                    print(f"Loaded from file - Hostname: {hostname}, IP: {device_ip}")
                    return hostname, device_ip
                else:
                    print("File exists but doesn't contain valid data")
        except FileNotFoundError:
            print(f"No fallback file found at {config_file}")
        except Exception as e:
            print(f"Error reading fallback file: {e}")
    
    except Exception as e:
        print(f"Unexpected error getting device info: {e}")
        
        # Try to load from file as fallback
        try:
            with open(config_file, "r") as f:
                lines = f.read().strip().split('\n')
                if len(lines) >= 2:
                    hostname = lines[0].strip()
                    device_ip = lines[1].strip()
                    print(f"Loaded from file after error - Hostname: {hostname}, IP: {device_ip}")
                    return hostname, device_ip
        except Exception as file_error:
            print(f"Could not load from file: {file_error}")
    
    # Final fallback if everything fails
    print("All methods failed - Using default values")
    hostname = hostname or "unknown-device"
    device_ip = "127.0.0.1"
    
    # Try to save these default values for next time
    try:
        os.makedirs("./data", exist_ok=True)
        with open(config_file, "w") as f:
            f.write(f"{hostname}\n{device_ip}\n")
        print(f"Saved fallback values to {config_file}")
    except Exception as e:
        print(f"Could not save fallback values: {e}")
    
    return hostname, device_ip

# Perform system initialization (first run setup)
if not perform_system_initialization():
    print("Warning: System initialization completed with errors.")
    print("The application will continue but may have limited functionality.")

# Get device information with error handling
hostname, device_ip = get_device_info()
print(f"Final result - Hostname: {hostname}, Device IP: {device_ip}")
# Configure logging
logging.basicConfig(filename='./data/log.txt', level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

# function to delete old logs 
def delete_old_logs():
    log_dir = './data/'
    log_file = 'log.txt'
    log_path = os.path.join(log_dir, log_file)
    
    if os.path.exists(log_path):
        file_mod_time = datetime.fromtimestamp(os.path.getmtime(log_path))
        if datetime.now() - file_mod_time > timedelta(days=10):
            os.remove(log_path)
            log_info_with_server(f"Deleted old log file: {log_file}")
        else:
            log_info_with_server(f"Log file is not older than 10 days: {log_file}")
    else:
        log_info_with_server(f"Log file does not exist: {log_file}")

# Function to read the name (idmasa) from the file
def read_name_from_file():
    try:
        with open("./data/idmasa.txt", "r") as file:
            n_masa = file.readline().strip()
            return n_masa
    except FileNotFoundError:
        logging.error("File ./data/idmasa.txt not found.")
        return "unknown"

# Function to send logs to a remote server for the Server_monitorizare APP
def send_log_to_server(log_message, n_masa, hostname, device_ip):
    host = hostname
    device = device_ip
    try:
        
        log_data = {
            "hostname": str(host),
            "device_ip": str(device),
            "nume_masa": str(n_masa),
            "log_message": str(log_message)
        }
        server_url = "http://rpi-ansible:80/logs"  # Replace with your server's URL
        print(log_data)  # Debugging: Print log_data to verify its contents
        response = requests.post(server_url, json=log_data, timeout=5)
        response.raise_for_status()
        logging.info("Log successfully sent to server: %s", log_message)
    except requests.exceptions.RequestException as e:
        logging.error("Failed to send log to server: %s", e)
# Wrapper for logging.info to also send logs to the server Monitorizare APP
def log_info_with_server(message):
    n_masa = read_name_from_file()  # Read name (idmasa) from the file
    formatted_message = f"{message} (n_masa: {n_masa})"  # Format the message
    logging.info(formatted_message)  # Log the formatted message
    send_log_to_server(message, n_masa, hostname, device_ip)  # Send the original message to the server

# Function to execute system commands with proper security
def execute_system_command(command):
    """
    Execute system commands with proper logging and security checks
    """
    # Define allowed commands for security
    allowed_commands = [
        "sudo apt update",
        "sudo apt upgrade -y",
        "sudo apt autoremove -y",
        "sudo apt autoclean",
        "sudo reboot",
        "sudo shutdown -h now",
        "df -h",
        "free -m",
        "uptime",
        "systemctl status",
        "sudo systemctl restart networking",
        "sudo systemctl restart ssh"
    ]
    
    try:
        # Check if command is allowed
        if command not in allowed_commands:
            log_info_with_server(f"Command '{command}' is not allowed for security reasons")
            return {"status": "error", "message": f"Command '{command}' is not allowed", "output": ""}
        
        log_info_with_server(f"Executing command: {command}")
        
        # Execute the command
        result = subprocess.run(
            command.split(),
            capture_output=True,
            text=True,
            timeout=300  # 5 minute timeout
        )
        
        output = result.stdout + result.stderr
        
        if result.returncode == 0:
            log_info_with_server(f"Command '{command}' executed successfully")
            return {"status": "success", "message": "Command executed successfully", "output": output}
        else:
            log_info_with_server(f"Command '{command}' failed with return code {result.returncode}")
            return {"status": "error", "message": f"Command failed with return code {result.returncode}", "output": output}
            
    except subprocess.TimeoutExpired:
        log_info_with_server(f"Command '{command}' timed out")
        return {"status": "error", "message": "Command timed out", "output": ""}
    except Exception as e:
        log_info_with_server(f"Error executing command '{command}': {str(e)}")
        return {"status": "error", "message": f"Error: {str(e)}", "output": ""}

# Flask app for receiving commands (only if Flask is available)
if FLASK_AVAILABLE:
    command_app = Flask(__name__)

    @command_app.route('/execute_command', methods=['POST'])
    def handle_command_execution():
        """
        Endpoint to receive and execute system commands
        """
        try:
            data = request.json
            if not data or 'command' not in data:
                return jsonify({"error": "Invalid request. 'command' field is required"}), 400
            
            command = data.get('command')
            
            # Execute the command
            result = execute_system_command(command)
            
            return jsonify(result), 200 if result['status'] == 'success' else 400
            
        except Exception as e:
            log_info_with_server(f"Error handling command execution request: {str(e)}")
            return jsonify({"error": f"Server error: {str(e)}"}), 500

    @command_app.route('/status', methods=['GET'])
    def get_device_status():
        """
        Endpoint to get device status information
        """
        try:
            n_masa = read_name_from_file()
            
            # Get system information
            uptime_result = subprocess.run(['uptime'], capture_output=True, text=True)
            df_result = subprocess.run(['df', '-h', '/'], capture_output=True, text=True)
            free_result = subprocess.run(['free', '-m'], capture_output=True, text=True)
            
            status_info = {
                "hostname": hostname,
                "device_ip": device_ip,
                "nume_masa": n_masa,
                "timestamp": datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
                "uptime": uptime_result.stdout.strip() if uptime_result.returncode == 0 else "N/A",
                "disk_usage": df_result.stdout.strip() if df_result.returncode == 0 else "N/A",
                "memory_usage": free_result.stdout.strip() if free_result.returncode == 0 else "N/A"
            }
            
            return jsonify(status_info), 200
            
        except Exception as e:
            log_info_with_server(f"Error getting device status: {str(e)}")
            return jsonify({"error": f"Error getting status: {str(e)}"}), 500

    @command_app.route('/auto_update', methods=['POST'])
    def auto_update_app():
        """
        Auto-update the application from the central server
        Checks version, downloads newer files if available, and restarts the device
        """
        try:
            # Configuration
            SERVER_HOST = "rpi-ansible"
            SERVER_USER = "pi"
            SERVER_PASSWORD = "Initial01!"
            SERVER_APP_PATH = "/home/pi/Desktop/prezenta/app.py"
            SERVER_REPO_PATH = "/home/pi/Desktop/prezenta/Files/reposytory"
            
            # Dynamically determine local paths based on current script location
            current_script_path = os.path.abspath(__file__)
            local_base_dir = os.path.dirname(current_script_path)
            LOCAL_APP_PATH = current_script_path
            LOCAL_REPO_PATH = os.path.join(local_base_dir, "Files", "reposytory")
            
            log_info_with_server(f"Auto-update process initiated from: {LOCAL_APP_PATH}")
            
            # Step 1: Get current local version
            current_version = None
            try:
                with open(LOCAL_APP_PATH, 'r') as f:
                    first_line = f.readline()
                    if 'version' in first_line.lower():
                        # Extract version number (e.g., "2.5" from "#App version 2.5")
                        import re
                        version_match = re.search(r'version\s+(\d+\.?\d*)', first_line, re.IGNORECASE)
                        if version_match:
                            current_version = float(version_match.group(1))
                log_info_with_server(f"Current local version: {current_version}")
            except Exception as e:
                log_info_with_server(f"Could not determine local version: {e}")
                return jsonify({"error": f"Could not determine local version: {str(e)}"}), 500
            
            # Step 2: Get remote version via SCP
            temp_dir = "/tmp/app_update"
            try:
                # Create temporary directory
                subprocess.run(['mkdir', '-p', temp_dir], check=True)
                
                # Download remote app.py to check version
                scp_command = [
                    'sshpass', '-p', SERVER_PASSWORD,
                    'scp', '-o', 'StrictHostKeyChecking=no', '-o', 'UserKnownHostsFile=/dev/null',
                    f'{SERVER_USER}@{SERVER_HOST}:{SERVER_APP_PATH}',
                    f'{temp_dir}/app.py'
                ]
                
                result = subprocess.run(scp_command, capture_output=True, text=True, timeout=30)
                if result.returncode != 0:
                    log_info_with_server(f"Failed to download remote app.py: {result.stderr}")
                    return jsonify({"error": f"Failed to connect to server: {result.stderr}"}), 500
                
                # Check remote version
                remote_version = None
                with open(f'{temp_dir}/app.py', 'r') as f:
                    first_line = f.readline()
                    if 'version' in first_line.lower():
                        import re
                        version_match = re.search(r'version\s+(\d+\.?\d*)', first_line, re.IGNORECASE)
                        if version_match:
                            remote_version = float(version_match.group(1))
                
                log_info_with_server(f"Remote version: {remote_version}")
                
            except subprocess.TimeoutExpired:
                return jsonify({"error": "Connection to server timed out"}), 500
            except Exception as e:
                log_info_with_server(f"Error checking remote version: {e}")
                return jsonify({"error": f"Error checking remote version: {str(e)}"}), 500
            
            # Step 3: Compare versions
            if remote_version is None:
                return jsonify({"error": "Could not determine remote version"}), 500
            
            if current_version is None or remote_version <= current_version:
                log_info_with_server(f"No update needed. Current: {current_version}, Remote: {remote_version}")
                return jsonify({
                    "status": "no_update_needed",
                    "current_version": current_version,
                    "remote_version": remote_version,
                    "message": "Application is already up to date"
                }), 200
            
            # Step 4: Download updated files
            log_info_with_server(f"Update available! Downloading version {remote_version}")
            
            try:
                # Create backup of current app
                backup_path = f"{LOCAL_APP_PATH}.backup.{current_version}"
                subprocess.run(['cp', LOCAL_APP_PATH, backup_path], check=True)
                log_info_with_server(f"Backup created: {backup_path}")
                
                # Download new app.py
                subprocess.run(['cp', f'{temp_dir}/app.py', LOCAL_APP_PATH], check=True)
                log_info_with_server("New app.py downloaded successfully")
                
                # Download repository folder
                repo_scp_command = [
                    'sshpass', '-p', SERVER_PASSWORD,
                    'scp', '-r', '-o', 'StrictHostKeyChecking=no', '-o', 'UserKnownHostsFile=/dev/null',
                    f'{SERVER_USER}@{SERVER_HOST}:{SERVER_REPO_PATH}',
                    f'{LOCAL_REPO_PATH}_new'
                ]
                
                result = subprocess.run(repo_scp_command, capture_output=True, text=True, timeout=60)
                if result.returncode == 0:
                    # Replace old repository with new one
                    subprocess.run(['rm', '-rf', LOCAL_REPO_PATH], check=True)
                    subprocess.run(['mv', f'{LOCAL_REPO_PATH}_new', LOCAL_REPO_PATH], check=True)
                    log_info_with_server("Repository updated successfully")
                else:
                    log_info_with_server(f"Repository update failed: {result.stderr}")
                
                # Download system packages folder
                local_system_packages_path = os.path.join(local_base_dir, 'Files', 'system_packages')
                server_system_packages = f'{SERVER_USER}@{SERVER_HOST}:/home/pi/Desktop/prezenta/Files/system_packages'
                
                system_scp_command = [
                    'sshpass', '-p', SERVER_PASSWORD,
                    'scp', '-r', '-o', 'StrictHostKeyChecking=no', '-o', 'UserKnownHostsFile=/dev/null',
                    server_system_packages,
                    f'{local_system_packages_path}_new'
                ]
                
                try:
                    result = subprocess.run(system_scp_command, capture_output=True, text=True, timeout=60)
                    if result.returncode == 0:
                        # Replace old system packages with new ones
                        if os.path.exists(local_system_packages_path):
                            subprocess.run(['rm', '-rf', local_system_packages_path], check=True)
                        subprocess.run(['mv', f'{local_system_packages_path}_new', local_system_packages_path], check=True)
                        log_info_with_server("System packages updated successfully")
                    else:
                        log_info_with_server(f"System packages update failed: {result.stderr}")
                except Exception as sys_e:
                    log_info_with_server(f"System packages update error: {sys_e}")
                
            except Exception as e:
                # Restore backup if something went wrong
                try:
                    subprocess.run(['cp', backup_path, LOCAL_APP_PATH], check=True)
                    log_info_with_server("Backup restored due to error")
                except:
                    pass
                return jsonify({"error": f"Update failed: {str(e)}"}), 500
            
            # Step 5: Schedule device restart
            log_info_with_server("Update completed successfully. Scheduling restart...")
            
            # Create a restart script that will run after this response
            restart_script = '''#!/bin/bash
sleep 3
sudo reboot
'''
            with open('/tmp/restart_device.sh', 'w') as f:
                f.write(restart_script)
            subprocess.run(['chmod', '+x', '/tmp/restart_device.sh'], check=True)
            
            # Schedule the restart in background
            subprocess.Popen(['/tmp/restart_device.sh'], 
                           stdout=subprocess.DEVNULL, 
                           stderr=subprocess.DEVNULL)
            
            return jsonify({
                "status": "success",
                "message": f"Updated from version {current_version} to {remote_version}. Device restarting...",
                "old_version": current_version,
                "new_version": remote_version,
                "restart_scheduled": True
            }), 200
            
        except Exception as e:
            log_info_with_server(f"Auto-update error: {str(e)}")
            return jsonify({"error": f"Auto-update failed: {str(e)}"}), 500
        finally:
            # Cleanup temp directory
            try:
                subprocess.run(['rm', '-rf', temp_dir], check=True)
            except:
                pass

    def start_command_server():
        """
        Start the Flask server with enhanced port handling and fallback
        """
        # Try different ports in order of preference
        preferred_ports = [
            int(os.environ.get('FLASK_PORT', 80)),  # Use environment variable or default to 80
            80,   # Standard HTTP port
            5000, # Flask default
            8080, # Alternative HTTP port
            3000  # Development port
        ]
        
        for port in preferred_ports:
            try:
                print(f"Attempting to start command server on port {port}...")
                
                # Test if port is available
                import socket
                test_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                test_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
                test_socket.bind(('0.0.0.0', port))
                test_socket.close()
                
                # Port is available, start Flask server
                print(f"Port {port} is available. Starting command server...")
                command_app.run(host='0.0.0.0', port=port, debug=False, use_reloader=False)
                return  # Success, exit function
                
            except PermissionError:
                print(f"✗ Permission denied for port {port}")
                if port == 80:
                    print("  Hint: Port 80 requires root privileges or capabilities")
                    print("  Try running: sudo setcap cap_net_bind_service=ep $(which python3)")
                continue
            except OSError as e:
                if "Address already in use" in str(e):
                    print(f"✗ Port {port} is already in use")
                else:
                    print(f"✗ Port {port} error: {e}")
                continue
            except Exception as e:
                print(f"✗ Failed to start on port {port}: {e}")
                continue
        
        # If we get here, all ports failed
        log_info_with_server("Error: Could not start command server on any port")
        print("✗ Could not start command server on any available port")

    # Start command server in a separate process with enhanced error handling
    try:
        print("Initializing command server...")
        command_server_process = Process(target=start_command_server)
        command_server_process.daemon = True  # Ensure it dies with main process
        command_server_process.start()
        
        # Give the server a moment to start and check if it's running
        import time
        time.sleep(2)
        
        if command_server_process.is_alive():
            port = int(os.environ.get('FLASK_PORT', 80))
            print(f"✓ Command server started successfully on port {port}")
        else:
            print("Warning: Command server process stopped unexpectedly")
            
    except Exception as e:
        print(f"Warning: Could not start command server: {e}")
        log_info_with_server(f"Command server startup error: {str(e)}")
else:
    print("Warning: Flask not available - Command server disabled")
# Call the function to delete old logs
delete_old_logs()
def config(): 
    import config
# function for posting data to the harting server 
def post_backup_data():
    
    try:
        with open("./data/tag.txt", "r") as file:
            lines = file.readlines()
        remaining_lines = lines[:]
        
        for line in lines:
            line = line.strip()
            if line:
                
                try:
                    response = requests.post(line, verify=False, timeout=3)
#                    
                    response.raise_for_status()  # Raise an error for bad status codes
                    log_info_with_server(f"Data posted successfully:")
                    remaining_lines.remove(line + "\n")
                except requests.exceptions.Timeout:
                    log_info_with_server("Request timed out.")
                    break
                except requests.exceptions.RequestException as e:
                    log_info_with_server(f"An error occurred: ")
                    break
        
        with open("./data/tag.txt", "w") as file:
            file.writelines(remaining_lines)
        #log_info_with_server("Backup data updated.")
    
    except FileNotFoundError:
        log_info_with_server("No backup file found.")
    

# Function to check internet connection     
def check_internet_connection():
    hostname = "10.76.140.17"
    cmd_block_wifi = 'sudo rfkill block wifi'
    cmd_unblock_wifi = 'sudo rfkill unblock wifi'
    log_info_with_server('Internet connection check loaded')
    delete_old_logs()
    chromium_process_name = "chromium"

    while True:
        try:
            # Use subprocess to execute the ping command
            response = subprocess.run(
                ["ping", "-c", "1", hostname],
                stdout=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL
            )
            if response.returncode == 0:
                log_info_with_server("Internet is up! Waiting 45 minutes.")
                post_backup_data()
                time.sleep(2700)  # 45 minutes
            else:
                log_info_with_server("Internet is down. Rebooting WiFi.")
                os.system(cmd_block_wifi)
                time.sleep(1200)  # 20 minutes
                os.system(cmd_unblock_wifi)

                # Refresh Chromium process
                log_info_with_server("Refreshing Chromium process.")
                try:
                    # Find and terminate Chromium processes
                    subprocess.run(["pkill", "-f", chromium_process_name], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                    time.sleep(5)  # Wait for processes to terminate

                    # Relaunch Chromium
                    url = "10.76.140.17/iweb_v2/index.php/traceability/production"
                    subprocess.Popen(
                        ["chromium", "--test-type", "--noerrors", "--kiosk", "--start-fullscreen", 
                         "--unsafely-treat-insecure-origin-as-secure=http://10.76.140.17", url],
                        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, stdin=subprocess.DEVNULL, start_new_session=True
                    )
                    log_info_with_server("Chromium process restarted successfully.")
                except Exception as e:
                    log_info_with_server(f"Failed to refresh Chromium process: {e}")
        except Exception as e:
            log_info_with_server(f"An error occurred during internet check: {e}")
            time.sleep(60)  # Retry after 1 minute in case of an error

# Start the internet connection check in a separate process
internet_check_process = Process(target=check_internet_connection)
internet_check_process.start()
url = "10.76.140.17/iweb_v2/index.php/traceability/production" # pentru cazul in care raspberiul nu are sistem de prezenta
# Launch Chromium with the specified URLs
subprocess.Popen(["chromium", "--test-type", "--noerrors", "--kiosk", "--start-fullscreen", "--unsafely-treat-insecure-origin-as-secure=http://10.76.140.17", url], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, stdin=subprocess.DEVNULL, start_new_session=True)

info = "0"
#function to post info 
def post_info(info):
    #log_info_with_server("Starting to post data...")
    info1 = info.strip()  # Remove any leading/trailing whitespace, including newlines
    try:
        response = requests.post(info1, verify=False, timeout=3)
        response.raise_for_status()  # Raise an error for bad status codes
        #log_info_with_server("Data posted successfully")
    except requests.exceptions.Timeout:
        with open("./data/tag.txt", "a") as file:  # Open in append mode
            file.write(info)
        log_info_with_server(f"Value  was saved to tag.txt")
    except requests.exceptions.RequestException as e:
        with open("./data/tag.txt", "a") as file:  # Open in append mode
            file.write(info)
        log_info_with_server("Value was saved to tag.txt")

async def post_info_async(info):
    try:
        # Try to use aiohttp if available
        if 'aiohttp' in globals():
            async with aiohttp.ClientSession() as session:
                try:
                    async with session.post(info, ssl=False, timeout=3) as response:
                        response_text = await response.text()
                        log_info_with_server(f"Data posted successfully")
                except asyncio.TimeoutError:
                    with open("./data/tag.txt", "a") as file:
                        file.write(info)
                except Exception as e:
                    with open("./data/tag.txt", "a") as file:
                        file.write(info)
        else:
            # Fallback to synchronous requests if aiohttp not available
            try:
                response = requests.post(info.strip(), verify=False, timeout=3)
                response.raise_for_status()
                log_info_with_server(f"Data posted successfully (fallback)")
            except requests.exceptions.Timeout:
                with open("./data/tag.txt", "a") as file:
                    file.write(info)
            except requests.exceptions.RequestException as e:
                with open("./data/tag.txt", "a") as file:
                    file.write(info)
    except Exception as e:
        # Final fallback - save to file
        with open("./data/tag.txt", "a") as file:
            file.write(info)

def post_info_thread(info):
    try:
        thread = threading.Thread(target=asyncio.run, args=(post_info_async(info),), daemon=True)
        thread.start()
    except Exception as e:
        # Fallback to synchronous posting if async fails
        print(f"Async posting failed, using sync fallback: {e}")
        post_info(info)

# Initialize LEDs with error handling
try:
    print("Initializing LED controls...")
    led1 = OutputDevice(23)
    led2 = OutputDevice(24)
    print("✓ LED controls initialized successfully")
    log_info_with_server("LED controls initialized")
except Exception as e:
    print(f"Warning: Could not initialize LED controls: {e}")
    print("Creating dummy LED objects - visual feedback will be disabled")
    # Create dummy LED objects that don't crash the app
    class DummyLED:
        def __init__(self, pin):
            self.pin = pin
        def on(self):
            print(f"LED {self.pin} would turn ON")
        def off(self):
            print(f"LED {self.pin} would turn OFF")
    
    led1 = DummyLED(23)
    led2 = DummyLED(24)
    log_info_with_server("LED controls using dummy mode")

# Initialize table name/ID
print("Initializing device configuration...")
name = "idmasa"
logging.info("Variabila Id Masa A fost initializata ")

try:
    with open("./data/idmasa.txt", "r") as f:
        name = f.readline().strip() or "noconfig"
    print(f"✓ Device name loaded: {name}")
    log_info_with_server(f"Device name initialized: {name}")
except FileNotFoundError:
    print("Warning: idmasa.txt not found, using default 'noconfig'")
    name = "noconfig"
    # Create the file with default value
    try:
        with open("./data/idmasa.txt", "w") as f:
            f.write("noconfig")
        print("✓ Created default idmasa.txt file")
    except Exception as e:
        print(f"Could not create idmasa.txt: {e}")
except Exception as e:
    print(f"Error reading idmasa.txt: {e}")
    name = "noconfig"

logging.info(name)
#clasa reader 
class Reader(rdm6300.BaseReader):
    global info
    def card_inserted(self, card):
        if card.value == 12886709:
            
            config()
            return

        afisare = time.strftime("%Y-%m-%d&%H:%M:%S")
        date = f'https://dataswsibiusb01.sibiusb.harting.intra/RO_Quality_PRD/api/record/{name}/{card.value}/1/{afisare}\n'
        info = date
        if name == "noconfig":
            led1.on()
            time.sleep(5)
            led1.off()
            log_info_with_server(f"card inserted {card} but no")
        else:
            post_info_thread(info)
            led1.on()
            log_info_with_server(f"card inserted {card}")
            
    
    def card_removed(self, card):
        if card.value == 12886709:
            log_info_with_server("Removing Config card")
            return

        afisare = time.strftime("%Y-%m-%d&%H:%M:%S")
        date = f'https://dataswsibiusb01.sibiusb.harting.intra/RO_Quality_PRD/api/record/{name}/{card.value}/0/{afisare}\n'
        info = date
        if name == "noconfig":
            led1.off()
            log_info_with_server(f"card removed {card}")
        else:
            post_info_thread(info)
            led1.off()
            log_info_with_server(f"card removed {card}")
        



# Initialize RFID Reader with comprehensive error handling
def initialize_rfid_reader():
    """
    Initialize RFID reader with multiple device attempts and error handling
    """
    print("Initializing RFID reader...")
    
    # List of possible serial devices in order of preference
    serial_devices = ['/dev/ttyS0', '/dev/ttyAMA0', '/dev/ttyUSB0', '/dev/ttyACM0']
    
    for device in serial_devices:
        try:
            print(f"Attempting to initialize RFID reader on {device}...")
            r = Reader(device)
            r.start()
            print(f"✓ RFID reader successfully initialized on {device}")
            log_info_with_server(f"RFID reader started on {device}")
            return r
        except FileNotFoundError:
            print(f"✗ Device {device} not found")
            continue
        except PermissionError:
            print(f"✗ Permission denied for {device}")
            print(f"  Hint: Try adding user to dialout group: sudo usermod -a -G dialout $USER")
            continue
        except Exception as e:
            print(f"✗ Failed to initialize on {device}: {e}")
            continue
    
    # If we get here, all devices failed
    print("✗ Could not initialize RFID reader on any device")
    print("Available solutions:")
    print("  1. Check hardware connections")
    print("  2. Enable UART: sudo raspi-config -> Interface Options -> Serial")
    print("  3. Add user to dialout group: sudo usermod -a -G dialout $USER")
    print("  4. Reboot the system after making changes")
    
    log_info_with_server("ERROR: RFID reader initialization failed")
    return None

# Start RFID reader
try:
    rfid_reader = initialize_rfid_reader()
    if rfid_reader is None:
        print("WARNING: Application starting without RFID functionality")
        print("Card reading will not work until RFID reader is properly configured")
except Exception as e:
    print(f"Critical error initializing RFID reader: {e}")
    log_info_with_server(f"Critical RFID error: {str(e)}")
    print("Application will start but RFID functionality will be disabled")