#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
pub struct SizeConstraint {
    min: usize,
    max: usize,
}

impl SizeConstraint {
    pub fn new(min: usize, max: usize) -> Self {
        Self { min, max }
    }
}

#[derive(Debug, Clone, serde::Serialize)]
pub struct StaticConstraints {
    pub mail_len: SizeConstraint,
    pub user_name_len: SizeConstraint,
    pub password_len: SizeConstraint,
}

impl Default for StaticConstraints {
    fn default() -> Self {
        Self {
            mail_len: SizeConstraint::new(5, 255),
            user_name_len: SizeConstraint::new(3, 30),
            password_len: SizeConstraint::new(8, 255),
        }
    }
}