use crate::error::{CliError, Result};

pub fn encode_gnacs(data: &str) -> Result<String> {
    // 简化实现：将字符串转换为48位二进制
    let bytes = data.as_bytes();
    if bytes.len() > 6 {
        return Err(CliError::Encoding("数据过长，最多6字节".to_string()));
    }
    
    let mut result = String::new();
    for byte in bytes {
        result.push_str(&format!("{:08b}", byte));
    }
    
    // 补齐到48位
    while result.len() < 48 {
        result.push('0');
    }
    
    Ok(result)
}

pub fn decode_gnacs(gnacs: &str) -> Result<String> {
    if gnacs.len() != 48 {
        return Err(CliError::Encoding("GNACS编码必须是48位二进制".to_string()));
    }
    
    let mut bytes = Vec::new();
    for i in (0..48).step_by(8) {
        let byte_str = &gnacs[i..i+8];
        let byte = u8::from_str_radix(byte_str, 2)
            .map_err(|_| CliError::Encoding("无效的二进制字符串".to_string()))?;
        if byte != 0 {
            bytes.push(byte);
        }
    }
    
    String::from_utf8(bytes)
        .map_err(|_| CliError::Encoding("无效的UTF-8字符串".to_string()))
}