use argon2::{
    password_hash::{rand_core::OsRng, PasswordHash, PasswordHasher, PasswordVerifier, SaltString},
    Argon2,
};

pub fn encrypt(password: &str) -> argon2::password_hash::Result<String> {
    let salt = SaltString::generate(&mut OsRng);
    let argon2 = Argon2::default();
    argon2
        .hash_password(password.as_bytes(), &salt)
        .map(|hash| hash.to_string())
}

pub fn verify(password_hash: &str, password: &str) -> argon2::password_hash::Result<()> {
    let parsed_hash = PasswordHash::new(&password_hash)?;
    Argon2::default().verify_password(password.as_bytes(), &parsed_hash)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn check_always_random_salt() {
        let pass = "ahs9dya8tsd7fa8tsa86tT&^R%^DS^%ARS&A";
        let hash = encrypt(pass).unwrap();
        assert!(verify(hash.as_str(), pass).is_ok());
    }
}