import struct
from core.utils import console
from core.protocol import COMMANDS

class get_setting:
    def __init__(self, bus):
        self.bus = bus

    def get(self, key: str):
        key_bytes = key.encode('utf-8')
        payload = struct.pack('B', len(key_bytes)) + key_bytes
        
        self.bus.send_request(COMMANDS['get_setting'], payload)
        
        # varlen_params=1 liest exakt 1 Byte Länge + entsprechend viele Datenbytes
        data = self.bus.receive_response(length=0, varlen_params=1)
        
        if not data or data.get('type') == 'error':
            return None

        raw = data['data']
        val_len = raw[0]
        val_buf = raw[1:1+val_len]

        # Binärdaten zurück in Python-Typen parsen
        if key == "audio/vol" and val_len == 1:
            return struct.unpack('<B', val_buf)[0]
        elif key == "play/norepeat" and val_len == 1:
            return bool(struct.unpack('<B', val_buf)[0])
        elif key == "settings/storage_interval" and val_len == 2:
            return struct.unpack('<H', val_buf)[0]
        else:
            return None

    def print(self, result, key: str):
        if result is not None:
            console.print(f"⚙️  [info]{key}[/info] = [info]{result}[/info]")