//! Shared, validated typography settings for all built-in OBS components.
//!
//! Font IDs map to fixed, same-origin WOFF2 assets in the frontend rather than
//! accepting arbitrary CSS. This keeps settings portable between OBS hosts and
//! prevents untrusted component settings from becoming a CSS injection boundary.

use serde::{Deserialize, Serialize};

#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Deserialize, Serialize)]
#[serde(rename_all = "kebab-case")]
pub enum FontFamilyId {
    Song,
    #[default]
    FangSong,
    Kai,
    LiyuShoushu,
}

pub const fn default_font_brightness() -> u16 {
    130
}

pub fn sanitize_font_brightness(value: u16) -> u16 {
    value.clamp(70, 180)
}

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

    #[test]
    fn font_ids_are_stable_and_brightness_is_bounded() {
        assert_eq!(
            serde_json::to_string(&FontFamilyId::FangSong).unwrap(),
            "\"fang-song\""
        );
        assert_eq!(sanitize_font_brightness(1), 70);
        assert_eq!(sanitize_font_brightness(u16::MAX), 180);
        assert_eq!(
            serde_json::to_string(&FontFamilyId::LiyuShoushu).unwrap(),
            "\"liyu-shoushu\""
        );
    }
}