use opaque_ke::{Ristretto255, TripleDh, ServerSetup, CredentialResponse, RegistrationUploadLen, RegistrationResponse};
use opaque_ke::keypair::{OprfSeed, PrivateKey};
use sha2::Sha512;
use opaque_ke::CipherSuite;
use opaque_ke::argon2::Argon2;
use opaque_ke::generic_array::GenericArray;
use uuid::Uuid;

pub const NONCE_SIZE: usize = 12;
pub const SESSION_KEY_SIZE: usize = 32;
pub const SECRET_KEY_SIZE: usize = 16;

pub struct NKodeCipherSuite;

impl CipherSuite for NKodeCipherSuite {
    type OprfCs = Ristretto255;
    type KeyExchange = TripleDh<Ristretto255, Sha512>;
    type Ksf = Argon2<'static>;
}

pub type NKodeServerSetup = ServerSetup<NKodeCipherSuite, PrivateKey<Ristretto255>, OprfSeed<Sha512>>;


pub type PasswordFile = GenericArray<u8, RegistrationUploadLen<NKodeCipherSuite>>;

#[derive(Debug, Clone, PartialEq, Eq)]
pub struct LoginSession {
    pub response: CredentialResponse<NKodeCipherSuite>,
    pub session_id: Uuid
}

#[derive(Debug, Clone, PartialEq, Eq)]
pub struct RegisterSession {
    pub response: RegistrationResponse<NKodeCipherSuite>,
    pub session_id: Uuid
}