use sfml::graphics::Font as SfFont;

macro_rules! make_fonts {
    ( $(
        $enum_name: ident,
        $font_name: ident,
        $function_name: ident,
        $font_path: tt,)
    *) => {

        /// Describes all the fonts that will be used in this game.
        #[derive(Copy, Clone)]
        pub enum Font {
            $(
                /// A font.
                $enum_name,
            )*
        }

        /// A struct that holds all the fonts.
        pub struct FontManager {
            $(
                /// A font.
                $font_name: SfFont,
            )*
        }

        impl FontManager {
            /// Creates a new font manager and initializes all fonts.
            pub fn new() -> FontManager {
                FontManager {
                    $(
                        $font_name: FontManager::$function_name(),
                    )*
                }
            }

            $(
                /// Creates the font.
                fn $function_name() -> SfFont {
                    SfFont::from_file("assets/fonts/sansation.ttf").unwrap()
                    // let bytes = include_bytes!($font_path).to_vec();
                    // FontManager::make_font_from_bytes(bytes)
                }
            )*

            /// Returns the real font from the font id.
            pub fn get(&self, id: Font) -> &SfFont {
                match id {
                    $(
                        Font::$enum_name => &self.$font_name,
                    )*
                }
            }

        }
    }
}

make_fonts!(
    Sansation,
    sansation,
    make_sansation_font,
    "../../../assets/fonts/sansation.ttf",
);

impl FontManager {
    /// Creates a fonts from an array of bytes.
    fn _make_font_from_bytes(bytes: Vec<u8>) -> SfFont {
        SfFont::from_memory(&bytes).expect("Failed to create font")
    }
}