use std::num::NonZeroUsize;

// Safely wrap i64 header levels in an enum
enum HeaderLevel {
    H1,
    H2,
    H3,
    H4,
    H5,
    H6,
}
// This is not TryFrom as there's not really much we can do to handle the error?
impl From<NonZeroUsize> for HeaderLevel {
    fn from(value: NonZeroUsize) -> Self {
        match value.get() {
            1 => HeaderLevel::H1,
            2 => HeaderLevel::H2,
            3 => HeaderLevel::H3,
            4 => HeaderLevel::H4,
            5 => HeaderLevel::H5,
            6 => HeaderLevel::H6,
            _ => panic!(
                "Unexpected header level! Headers must be in range of 1 to 6 (inclusive), got: {}",
                value
            ),
        }
    }
}

impl From<HeaderLevel> for &str {
    fn from(value: HeaderLevel) -> Self {
        match value {
            HeaderLevel::H1 => "h1",
            HeaderLevel::H2 => "h2",
            HeaderLevel::H3 => "h3",
            HeaderLevel::H4 => "h4",
            HeaderLevel::H5 => "h5",
            HeaderLevel::H6 => "h6",
        }
    }
}