#[derive(Debug, PartialEq)]
pub enum DhcpError {
    InvalidMacAddress(String),
    InvalidIpAddress(String),
    IpAddressAlreadyMapped(String),
    MacAddressAlreadyMapped(String),
    IpAddressOutOfRange(String),
    Configuration(String),
}

impl std::fmt::Display for DhcpError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            DhcpError::InvalidMacAddress(mac) => write!(f, "Invalid MAC address format: {}", mac),
            DhcpError::InvalidIpAddress(ip) => write!(f, "Invalid IP address format: {}", ip),
            DhcpError::IpAddressAlreadyMapped(ip) => {
                write!(f, "IP address {} is already mapped", ip)
            }
            DhcpError::MacAddressAlreadyMapped(mac) => {
                write!(f, "MAC address {} is already mapped", mac)
            }
            DhcpError::IpAddressOutOfRange(ip) => {
                write!(f, "IP address {} is out of interface range", ip)
            }
            DhcpError::Configuration(msg) => f.write_str(&msg),
        }
    }
}

impl std::error::Error for DhcpError {}