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use secp256k1::error::Error;

#[derive(Debug, Clone, Copy, Eq, PartialEq)]
/// Tag used for public key recovery from signatures.
pub struct RecoveryId(pub u8);

impl RecoveryId {
    pub fn parse(p: u8) -> Result<RecoveryId, Error> {
        if p < 4 {
            Ok(RecoveryId(p))
        } else {
            Err(Error::InvalidRecoveryId)
        }
    }

    pub fn serialize(&self) -> u8 {
        self.0
    }
}

impl Into<u8> for RecoveryId {
    fn into(self) -> u8 {
        self.0
    }
}

impl Into<i32> for RecoveryId {
    fn into(self) -> i32 {
        self.0 as i32
    }
}