use strum::{Display, EnumString};

/// HDCP ([`High-bandwidth Digital Content Protection`]) level.
///
/// [`High-bandwidth Digital Content Protection`]:
/// https://www.digital-cp.com/sites/default/files/specifications/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdf
#[non_exhaustive]
#[derive(Ord, PartialOrd, Debug, Clone, Copy, PartialEq, Eq, Hash, Display, EnumString)]
#[strum(serialize_all = "SCREAMING-KEBAB-CASE")]
pub enum HdcpLevel {
    /// The associated [`VariantStream`] could fail to play unless the output is
    /// protected by High-bandwidth Digital Content Protection ([`HDCP`]) Type 0
    /// or equivalent.
    ///
    /// [`VariantStream`]: crate::tags::VariantStream
    /// [`HDCP`]: https://www.digital-cp.com/sites/default/files/specifications/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdf
    #[strum(serialize = "TYPE-0")]
    Type0,
    /// The content does not require output copy protection.
    None,
}

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

    #[test]
    fn test_display() {
        assert_eq!(HdcpLevel::Type0.to_string(), "TYPE-0".to_string());
        assert_eq!(HdcpLevel::None.to_string(), "NONE".to_string());
    }

    #[test]
    fn test_parser() {
        assert_eq!(HdcpLevel::Type0, "TYPE-0".parse().unwrap());
        assert_eq!(HdcpLevel::None, "NONE".parse().unwrap());

        assert!("unk".parse::<HdcpLevel>().is_err());
    }
}