use gpui::Rgba;

use crate::colors::{amber, hex, neutral, red, violet};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum ThemeMode {
    Light,
    #[default]
    Dark,
}

#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Theme {
    pub id: &'static str,
    pub name: &'static str,
    pub mode: ThemeMode,
    pub colors: ThemeColors,
}

impl Default for Theme {
    fn default() -> Self {
        Variant::default().theme()
    }
}

#[derive(Debug, Clone, Copy, PartialEq)]
pub struct ThemeColors {
    pub background: Rgba,
    pub surface: Rgba,
    pub surface_elevated: Rgba,
    pub border: Rgba,
    pub text: Rgba,
    pub text_muted: Rgba,
    pub accent: Rgba,
    pub accent_hover: Rgba,
    pub accent_text: Rgba,
    pub success: Rgba,
    pub warning: Rgba,
    pub danger: Rgba,
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
#[allow(dead_code)]
pub enum Variant {
    VioletLight,
    #[default]
    VioletDark,
}

impl Variant {
    #[allow(dead_code)]
    pub const ALL: [Self; 2] = [Self::VioletLight, Self::VioletDark];

    pub const fn label(self) -> &'static str {
        match self {
            Self::VioletLight => "Violet Light",
            Self::VioletDark => "Violet Dark",
        }
    }

    pub const fn theme(self) -> Theme {
        match self {
            Self::VioletLight => Theme {
                id: "violet-light",
                name: "Violet Light",
                mode: ThemeMode::Light,
                colors: ThemeColors {
                    background: neutral(50),
                    surface: neutral(100),
                    surface_elevated: neutral(200),
                    border: neutral(200),
                    text: neutral(900),
                    text_muted: neutral(600),
                    accent: violet(600),
                    accent_hover: violet(500),
                    accent_text: neutral(100),
                    success: hex(0x16a34a),
                    warning: amber(600),
                    danger: red(600),
                },
            },
            Self::VioletDark => Theme {
                id: "violet-dark",
                name: "Violet Dark",
                mode: ThemeMode::Dark,
                colors: ThemeColors {
                    background: neutral(950),
                    surface: neutral(900),
                    surface_elevated: neutral(800),
                    border: neutral(800),
                    text: neutral(50),
                    text_muted: neutral(400),
                    accent: violet(600),
                    accent_hover: violet(300),
                    accent_text: neutral(100),
                    success: hex(0x22c55e),
                    warning: amber(500),
                    danger: red(500),
                },
            },
        }
    }
}

impl From<gpui::WindowAppearance> for Theme {
    fn from(value: gpui::WindowAppearance) -> Self {
        let variant = match value {
            gpui::WindowAppearance::Light | gpui::WindowAppearance::VibrantLight => {
                Variant::VioletLight
            }
            gpui::WindowAppearance::Dark | gpui::WindowAppearance::VibrantDark => {
                Variant::VioletDark
            }
        };
        variant.theme()
    }
}