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use smithay_client_toolkit::window::WindowState;

pub use tiny_skia::Color;
use tiny_skia::{Paint, Shader};

pub(crate) const BORDER_SIZE: u32 = 10;
pub(crate) const HEADER_SIZE: u32 = 35;

#[derive(Debug, Clone)]
pub struct ColorMap {
    pub headerbar: Color,
    pub button_idle: Color,
    pub button_hover: Color,
    pub button_icon: Color,
    pub border_color: Color,
    pub font_color: Color,
}

impl ColorMap {
    pub(crate) fn headerbar_paint(&self) -> Paint {
        Paint {
            shader: Shader::SolidColor(self.headerbar),
            anti_alias: true,
            ..Default::default()
        }
    }

    pub(crate) fn button_idle_paint(&self) -> Paint {
        Paint {
            shader: Shader::SolidColor(self.button_idle),
            anti_alias: true,
            ..Default::default()
        }
    }

    pub(crate) fn button_hover_paint(&self) -> Paint {
        Paint {
            shader: Shader::SolidColor(self.button_hover),
            anti_alias: true,
            ..Default::default()
        }
    }

    pub(crate) fn button_icon_paint(&self) -> Paint {
        Paint {
            shader: Shader::SolidColor(self.button_icon),
            ..Default::default()
        }
    }

    pub(crate) fn border_paint(&self) -> Paint {
        Paint {
            shader: Shader::SolidColor(self.border_color),
            ..Default::default()
        }
    }
}

#[derive(Debug, Clone)]
pub struct ColorTheme {
    pub active: ColorMap,
    pub inactive: ColorMap,
}

impl Default for ColorTheme {
    fn default() -> Self {
        Self::light()
    }
}

impl ColorTheme {
    /// Automatically choose between light & dark themes based on:
    /// * dbus org.freedesktop.portal.Settings
    ///   <https://flatpak.github.io/xdg-desktop-portal/#gdbus-interface-org-freedesktop-portal-Settings>
    pub fn auto() -> Self {
        match crate::config::prefer_dark() {
            true => Self::dark(),
            false => Self::light(),
        }
    }

    pub fn light() -> Self {
        Self {
            active: ColorMap {
                headerbar: Color::from_rgba8(235, 235, 235, 255),
                button_idle: Color::from_rgba8(216, 216, 216, 255),
                button_hover: Color::from_rgba8(207, 207, 207, 255),
                button_icon: Color::from_rgba8(42, 42, 42, 255),
                border_color: Color::from_rgba8(220, 220, 220, 255),
                font_color: Color::from_rgba8(47, 47, 47, 255),
            },
            inactive: ColorMap {
                headerbar: Color::from_rgba8(250, 250, 250, 255),
                button_idle: Color::from_rgba8(240, 240, 240, 255),
                button_hover: Color::from_rgba8(216, 216, 216, 255),
                button_icon: Color::from_rgba8(148, 148, 148, 255),
                border_color: Color::from_rgba8(220, 220, 220, 255),
                font_color: Color::from_rgba8(150, 150, 150, 255),
            },
        }
    }

    pub fn dark() -> Self {
        Self {
            active: ColorMap {
                headerbar: Color::from_rgba8(48, 48, 48, 255),
                button_idle: Color::from_rgba8(69, 69, 69, 255),
                button_hover: Color::from_rgba8(79, 79, 79, 255),
                button_icon: Color::from_rgba8(255, 255, 255, 255),
                border_color: Color::from_rgba8(58, 58, 58, 255),
                font_color: Color::from_rgba8(255, 255, 255, 255),
            },
            inactive: ColorMap {
                headerbar: Color::from_rgba8(36, 36, 36, 255),
                button_idle: Color::from_rgba8(47, 47, 47, 255),
                button_hover: Color::from_rgba8(57, 57, 57, 255),
                button_icon: Color::from_rgba8(144, 144, 144, 255),
                border_color: Color::from_rgba8(58, 58, 58, 255),
                font_color: Color::from_rgba8(144, 144, 144, 255),
            },
        }
    }
}

impl ColorTheme {
    pub(crate) fn for_state(&self, state: WindowState) -> &ColorMap {
        if state == WindowState::Active {
            &self.active
        } else {
            &self.inactive
        }
    }
}