server.py

import json
import logging

from config_manager import ConfigManager
from lora_controller import LoRaController, HANDSHAKE_INIT
from node_connector import NodeConnector

logging.basicConfig(level=logging.INFO)

def main():
    node_url = ConfigManager.get_node_url()
    node = NodeConnector(node_url)
    node.test_connection()

    lora_config = ConfigManager.get_lora_config()
    lora_config["serial_port"] = "/dev/tty.usbserial-110"
    lora_controller = LoRaController(**lora_config)
    lora_controller.setup()

    while True:
        msg = lora_controller.listen()
        if msg:
            msg_type, addr = lora_controller.parse_message_type(msg)
            # skip invalid messages
            if not addr:
                continue

            # it is a handshake
            if msg_type == HANDSHAKE_INIT:
                lora_controller.reply_ping(addr)
            # it is a normal message
            else:
                try:
                    response = node.send(msg)
                    data = json.dumps(response, separators=(',', ':'))
                    logging.info(f"Data: {data}")
                    lora_controller.send_message(data, addr)
                except Exception as e:
                    logging.error(f"An unexpected error occurred: {e}")

if __name__ == "__main__":
    main()