import threading
import time
from digi.xbee.devices import XBeeDevice

# Configure XBee connection
PORT = "/dev/ttyUSB1"
BAUD_RATE = 57600

# Initialize XBee device
device = XBeeDevice(PORT, BAUD_RATE)
device.open()

# Callback function to handle incoming messages
def data_received_callback(xbee_message):
    sender = xbee_message.remote_device.get_64bit_addr()
    try:
        data = xbee_message.data.decode("utf-8")  # Attempt UTF-8 decoding
    except UnicodeDecodeError:
        data = xbee_message.data.hex()  # Fallback to HEX if decoding fails
    print(f"\nReceived from {sender}: {data}\nEnter message: ", end="")

# Register callback for incoming data
device.add_data_received_callback(data_received_callback)

# Function to send broadcast messages (runs in a separate thread)
def send_messages():
    while True:
        user_input = input("\nEnter message: ")  # User input
        status = device.send_data_broadcast(user_input)  # Broadcast message
        if status:
            print("Broadcast message sent successfully!")
        else:
            print("Failed to send broadcast message.")

# Start the message sending thread
send_thread = threading.Thread(target=send_messages, daemon=True)
send_thread.start()

print("Broadcast chat mode activated. Type a message and press Enter to send.\n")

# Keep the program running
try:
    while True:
        time.sleep(0.1)  # Reduce CPU usage and ensure stability
except KeyboardInterrupt:
    print("\nProgram terminated.")
    device.close()