/// Selects a library to provide TLS.
#[derive(Clone, Debug)]
pub(crate) enum TlsProvider {
    /// Use OpenSSL for TLS.
    #[cfg(feature = "openssl")]
    OpenSsl,
    /// Use OpenSSL for TLS.
    #[cfg(feature = "rustls")]
    Rustls,
}

/// Represents a X509 certificate.
#[derive(Debug, Clone)]
pub struct Certificate {
    pub(crate) pem: Vec<u8>,
}

/// Represents a private key and X509 certificate.
#[derive(Debug, Clone)]
pub struct Identity {
    pub(crate) cert: Certificate,
    pub(crate) key: Vec<u8>,
}

impl Certificate {
    /// Parse a PEM encoded X509 Certificate.
    ///
    /// The provided PEM should include at least one PEM encoded certificate.
    pub fn from_pem(pem: impl AsRef<[u8]>) -> Self {
        let pem = pem.as_ref().into();
        Self { pem }
    }
}

impl Identity {
    /// Parse a PEM encoded certificate and private key.
    ///
    /// The provided cert must contain at least one PEM encoded certificate.
    pub fn from_pem(cert: impl AsRef<[u8]>, key: impl AsRef<[u8]>) -> Self {
        let cert = Certificate::from_pem(cert);
        let key = key.as_ref().into();
        Self { cert, key }
    }
}