import serial

BUTTONS = {
    "ok": [0x00, 0x00],
    "ok_hold": [0x00, 0x40],
    "source_r": [0x00, 0x01],
    "source_r_hold": [0x00, 0x81],
    "source_l": [0x00, 0x02],
    "source_l_hold": [0x00, 0x82],
    "volume_up": [0x00, 0x03],
    "volume_up_hold": [0x00, 0x43],
    "volume_down": [0x00, 0x04],
    "volume_down_hold": [0x00, 0x44],
    "pause": [0x00, 0x05],
    "wheel_up": [0x01, 0x01],
    "wheel_down": [0x01, 0x41],
}

class TunerList:
    def __init__(self, port):
        self.serial = serial.Serial(port)

        self.text = ""
        self.preset = None
    
    def send_button(self, btn):
        self.serial.write(BUTTONS[btn])
    
    def run(self):
        while True:
            line = self.serial.readline()[:-2]
            if line[0] == 0x0F or line[0] == 0x0C:
                self.text = line[(8 if line[0] == 0x0F else 5):].decode("ascii")
                if (line[3] != 0x20):
                    self.preset = line[3] & 0x0F
                else:
                    self.preset = None
            elif line[0] == 0x39:
                self.preset = None
                self.text = ""
                
            for c in line:
                print(hex(c), " ", end="")
            print("[",self.text,"]", f" [P {self.preset}]")

if __name__ == "__main__":
    TunerList("COM3").run()