use ratatui::style::Color;

#[derive(Clone, Copy)]
pub(super) struct Palette {
    pub primary: Color,
    pub accent: Color,
    pub canvas: Color,
    pub canvas_heading: Color,
    pub selection: Color,
    pub selection_foreground: Color,
    pub foreground: Color,
}

pub(super) fn palette(theme: &str) -> Palette {
    match theme {
        "mono" => Palette {
            primary: Color::Black,
            accent: Color::White,
            canvas: Color::Gray,
            canvas_heading: Color::Black,
            selection: Color::DarkGray,
            selection_foreground: rgb(0xffffff),
            foreground: Color::Black,
        },
        "amber" => Palette {
            primary: Color::Black,
            accent: Color::Rgb(255, 191, 0),
            canvas: Color::Rgb(32, 24, 0),
            canvas_heading: Color::Rgb(255, 191, 0),
            selection: Color::Rgb(112, 56, 0),
            selection_foreground: rgb(0xffffff),
            foreground: Color::Rgb(255, 191, 0),
        },
        "greenscreen" => Palette {
            primary: Color::Black,
            accent: rgb(0x79a86b),
            canvas: rgb(0x030704),
            canvas_heading: rgb(0x9ac58d),
            selection: rgb(0x284b2f),
            selection_foreground: rgb(0xdce8d8),
            foreground: rgb(0x8fbd80),
        },
        "nord" => Palette {
            primary: rgb(0x2e3440),
            accent: rgb(0x88c0d0),
            canvas: rgb(0x3b4252),
            canvas_heading: rgb(0xeceff4),
            selection: rgb(0xeceff4),
            selection_foreground: rgb(0x2e3440),
            foreground: rgb(0xeceff4),
        },
        "catppuccin-mocha" => Palette {
            primary: rgb(0x181825),
            accent: rgb(0xcba6f7),
            canvas: rgb(0x1e1e2e),
            canvas_heading: rgb(0xcdd6f4),
            selection: rgb(0xcba6f7),
            selection_foreground: rgb(0x11111b),
            foreground: rgb(0xcdd6f4),
        },
        _ => Palette {
            primary: Color::Rgb(0, 0, 128),
            accent: Color::Cyan,
            canvas: Color::Rgb(192, 192, 192),
            canvas_heading: Color::Rgb(0, 0, 128),
            selection: Color::Rgb(128, 0, 0),
            selection_foreground: rgb(0xffffff),
            foreground: Color::Black,
        },
    }
}

pub(super) const fn rgb(value: u32) -> Color {
    Color::Rgb(
        ((value >> 16) & 0xff) as u8,
        ((value >> 8) & 0xff) as u8,
        (value & 0xff) as u8,
    )
}