#!/usr/bin/env python3
"""
Example client for FR-1.4 protocol
"""
import serial
import time
from protocol_parser import ProtocolParser


def main():
    SERIAL_PORT = "/dev/ttyACM0"
    BAUDRATE = 115200

    parser = ProtocolParser()

    try:
        with serial.Serial(SERIAL_PORT, BAUDRATE, timeout=1) as ser:
            print(f"Connected to {SERIAL_PORT}")

            while True:
                # Read available data
                if ser.in_waiting > 0:
                    data = ser.read(ser.in_waiting)

                    # Parse packets
                    packets = parser.feed(data)
                    for pkt in packets:
                        if pkt.valid:
                            print(
                                f"[{pkt.timestamp_ms:010d}] "
                                f"RMS: {pkt.rms_db:+6.1f} dB  "
                                f"Freq: {pkt.freq_hz:4d} Hz"
                            )
                        else:
                            print(f"[WARN] Invalid packet: {pkt}")

                    # Show stats every 30 packets
                    stats = parser.get_stats()
                    if stats.packets_received % 30 == 0 and stats.packets_received > 0:
                        print(
                            f"Stats: RX={stats.packets_received} "
                            f"CRC_err={stats.crc_errors} "
                            f"LEN_err={stats.length_errors} "
                            f"Range_err={stats.range_errors}"
                        )

                time.sleep(0.01)

    except KeyboardInterrupt:
        print("\nExiting...")
    except serial.SerialException as e:
        print(f"Error: {e}")


if __name__ == "__main__":
    main()