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use super::Class;
use crate::DomainName;
use hex::encode;
use std::fmt::{Display, Formatter, Result as FmtResult};

try_from_enum_to_integer! {
    #[repr(u8)]
    #[derive(Debug, Clone, Eq, PartialEq, Hash)]
    pub enum SSHFPAlgorithm {
        Reserved = 0,
        RSA = 1,
        DSS = 2,
    }
}

try_from_enum_to_integer! {
    #[repr(u8)]
    #[derive(Debug, Clone, Eq, PartialEq, Hash)]
    pub enum SSHFPType {
        Reserved = 0,
        Sha1 = 1,
    }
}

#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct SSHFP {
    pub domain_name: DomainName,
    pub ttl: u32,
    pub class: Class,
    pub algorithm: SSHFPAlgorithm,
    pub type_: SSHFPType,
    pub fp: Vec<u8>,
}

impl_to_type!(SSHFP);

impl Display for SSHFP {
    fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
        write!(
            f,
            "{} {} {} SSHFP {} {} {}",
            self.domain_name,
            self.ttl,
            self.class,
            self.algorithm,
            self.type_,
            encode(self.fp.as_slice()),
        )
    }
}