// Copyright (c) 2022 Marceline Crmaer
// SPDX-License-Identifier: AGPL-3.0-or-later

use canary_script::Color;

/// A reusable set of colors. Used by default widget styles.
pub struct Palette {
    pub base: Color,
    pub base_hover: Color,
    pub base_active: Color,
    pub surface: Color,
    pub overlay: Color,
    pub text: Color,
    pub black: Color,
    pub red: Color,
    pub green: Color,
    pub yellow: Color,
    pub blue: Color,
    pub magenta: Color,
    pub cyan: Color,
    pub white: Color,
}

impl Palette {
    pub fn make_label_pairs(&self) -> Vec<(&'static str, Color)> {
        vec![
            ("Base", self.base),
            ("Base Hover", self.base_hover),
            ("Base Active", self.base_active),
            ("Surface", self.surface),
            ("Overlay", self.overlay),
            ("Text", self.text),
            ("Black", self.black),
            ("Red", self.red),
            ("Green", self.green),
            ("Yellow", self.yellow),
            ("Blue", self.blue),
            ("Magenta", self.magenta),
            ("Cyan", self.cyan),
            ("White", self.white),
        ]
    }
}

/// The common base color alpha shared between all themes.
pub const BASE_ALPHA: u8 = 230;

/// The common base_hover color alpha shared between all themes.
pub const BASE_HOVER_ALPHA: u8 = 242;

/// Converts 0xrrggbb hex to an opaque [Color].
pub const fn hex(rgb: u32) -> Color {
    Color((rgb << 8) | 0xff)
}

/// Sword Art Online color palette.
pub const SAO_PALETTE: Palette = Palette {
    base: Color::WHITE.with_alpha(BASE_ALPHA),
    base_hover: Color::WHITE.with_alpha(BASE_HOVER_ALPHA),
    base_active: Color::YELLOW,
    surface: Color::WHITE,
    overlay: Color::WHITE,
    text: Color::BLACK,
    black: Color::BLACK,
    red: Color::RED,
    green: Color::GREEN,
    yellow: Color::YELLOW,
    blue: Color::BLUE,
    magenta: Color::MAGENTA,
    cyan: Color::CYAN,
    white: Color::WHITE,
};

/// Rose Pine color palette.
pub const ROSE_PINE_PALETTE: Palette = Palette {
    base: hex(0x191724).with_alpha(BASE_ALPHA),
    base_hover: hex(0x21202ee0).with_alpha(BASE_HOVER_ALPHA), // Highlight Low
    base_active: hex(0x403d52),                               // Highlight Med
    surface: hex(0x1f1d2e),
    overlay: hex(0x26233a),
    text: hex(0xe0def4),
    black: hex(0x6e6a86),   // Muted
    red: hex(0xeb6f92),     // Love
    green: hex(0x7fb59f),   // ??? (not in Rose Pine?)
    yellow: hex(0xf6c177),  // Gold
    blue: hex(0x31748f),    // Pine
    magenta: hex(0xc4a7e7), // Iris
    cyan: hex(0x9ccfd8),    // Foam
    white: hex(0xe0def4),   // Text
};

/// Rose Pine Moon color palette.
pub const ROSE_PINE_MOON_PALETTE: Palette = Palette {
    base: hex(0x232136).with_alpha(BASE_ALPHA),
    base_hover: hex(0x2a283e).with_alpha(BASE_HOVER_ALPHA), // Highlight Low
    base_active: hex(0x44415a),                             // Highlight Med
    surface: hex(0x2a273f),
    overlay: hex(0x393552),
    text: hex(0xe0def4),
    black: hex(0x6e6a86),   // Muted
    red: hex(0xeb6f92),     // Love
    green: hex(0x7fb59f),   // ??? (not in Rose Pine?)
    yellow: hex(0xf6c177),  // Gold
    blue: hex(0x3e8fb0),    // Pine
    magenta: hex(0xc4a7e7), // Iris
    cyan: hex(0x9ccfd8),    // Foam
    white: hex(0xe0def4),   // Text
};

/// [Arctica](https://github.com/sashakoshka/arctica) indexable color theme.
pub const ARCTICA: [Color; 24] = [
    hex(0x242933),
    hex(0x2e3440),
    hex(0x3b4252),
    hex(0x4c566a),
    hex(0xeceff4),
    hex(0xd8dee9),
    hex(0xc2c9d6),
    hex(0xaeb7c6),
    hex(0xa8555d),
    hex(0xb77763),
    hex(0xcdb179),
    hex(0x8ba277),
    hex(0x769b9b),
    hex(0x72a1ae),
    hex(0x5e81ac),
    hex(0x92738c),
    hex(0xbf616a),
    hex(0xd08770),
    hex(0xebcb8b),
    hex(0xa3be8c),
    hex(0x8fbcbb),
    hex(0x88c0d0),
    hex(0x81a1c1),
    hex(0xb48ead),
];

/// [Arctica](https://github.com/sashakoshka/arctica) color palette.
pub const ARCTICA_PALETTE: Palette = Palette {
    base: ARCTICA[0].with_alpha(BASE_ALPHA),
    base_hover: ARCTICA[1].with_alpha(BASE_HOVER_ALPHA),
    base_active: ARCTICA[13],
    surface: ARCTICA[2],
    overlay: ARCTICA[3],
    text: ARCTICA[5],
    black: ARCTICA[3],
    red: ARCTICA[8],
    green: ARCTICA[11],
    yellow: ARCTICA[10],
    blue: ARCTICA[14],
    magenta: ARCTICA[15],
    cyan: ARCTICA[13],
    white: ARCTICA[7],
};

/// Common measurements for widget shapes.
pub struct Metrics {
    pub surface_rounding: f32,
}

/// Common default parameters for widget styles.
pub struct Theme {
    pub palette: Palette,
    pub metrics: Metrics,
}

/// The global theme.
pub const THEME: Theme = Theme {
    palette: ARCTICA_PALETTE,
    metrics: Metrics {
        surface_rounding: 5.0,
    },
};