# tool/core/cmd/crc32.py
import struct
from core.utils import console, console_err
from core.protocol import COMMANDS, ERRORS

class crc32:
    def __init__(self, bus):
        self.bus = bus

    def get(self, path: str):
        path_bytes = path.encode('utf-8')
        payload = struct.pack('B', len(path_bytes)) + path_bytes
        self.bus.send_request(COMMANDS['crc_32'], payload)
        
        # 1 Byte Type + 4 Byte Size = 5
        data = self.bus.receive_response(length=8, timeout=5)  
        
        if not data or data.get('type') == 'error':
            return None

        payload = data['data']
        crc_value = struct.unpack('<I', payload[0:4])[0]
        audio_crc_value = struct.unpack('<I', payload[4:8])[0]
        result = {
            'crc32': crc_value,
            'audio_crc32': audio_crc_value
        }
        return result

    def print(self, result, path: str):
        if not result:
            return

        console.print(f"[info_title]CRC32[/info_title] für [info]{path}[/info]:")
        console.print(f"  • CRC32 Datei: [info]{result['crc32']:08X}[/info]")
        console.print(f"  • CRC32 Audio: [info]{result['audio_crc32']:08X}[/info]")