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

pub fn hash_password(password: &str) -> Result<String, Error> {
    let argon2 = Argon2::default();
    let salt = SaltString::generate(&mut OsRng);
    Ok(argon2.hash_password(password.as_bytes(), &salt)?.to_string())
}

pub fn check_password(password: &str, password_hash: &str) -> Result<bool, Error> {
    let argon2 = Argon2::default();
    let hash = PasswordHash::new(password_hash)?;
    Ok(argon2.verify_password(password.as_bytes(), &hash).is_ok())
}

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

    #[test]
    fn test_password_hashing() {

        let passwords = vec!["password", "test1", "random"];

        for password in &passwords {
            let hash = hash_password(password).unwrap();
            assert!(check_password(password, &hash).unwrap());
        }
    }
}