import SwiftUI

 #if canImport(UIKit)
 import UIKit
 #elseif canImport(AppKit)
 import AppKit
 #endif

private enum AIPalette {
#if canImport(UIKit)
    private static func dynamicColor(light: UIColor, dark: UIColor) -> Color {
        Color(UIColor { traits in
            traits.userInterfaceStyle == .dark ? dark : light
        })
    }

    private static func rgba(
        _ red: CGFloat,
        _ green: CGFloat,
        _ blue: CGFloat,
        _ alpha: CGFloat
    ) -> UIColor {
        UIColor(red: red / 255, green: green / 255, blue: blue / 255, alpha: alpha)
    }

    private static func color(light: UIColor, dark: UIColor) -> Color {
        dynamicColor(light: light, dark: dark)
    }

    static let canvas = color(light: rgba(243, 245, 248, 1), dark: rgba(19, 22, 28, 1))
    static let surface = color(light: rgba(255, 255, 255, 1), dark: rgba(27, 31, 39, 1))
    static let control = color(light: rgba(247, 249, 251, 1), dark: rgba(37, 44, 56, 1))
    static let ink = color(light: rgba(28, 39, 56, 1), dark: rgba(235, 242, 247, 1))
    static let muted = color(light: rgba(111, 124, 143, 1), dark: rgba(173, 183, 199, 1))
    static let line = color(light: rgba(224, 229, 235, 1), dark: rgba(56, 63, 74, 1))
    static let brand = color(light: rgba(19, 30, 48, 1), dark: rgba(14, 22, 35, 1))
    static let primary = color(light: rgba(17, 119, 110, 1), dark: rgba(20, 142, 126, 1))
    static let danger = color(light: rgba(182, 77, 72, 1), dark: rgba(193, 79, 71, 1))
    static let warning = color(light: rgba(184, 120, 17, 1), dark: rgba(209, 141, 39, 1))
    static let success = color(light: rgba(21, 149, 112, 1), dark: rgba(32, 161, 119, 1))
#elseif canImport(AppKit)
    static let canvas = Color(red: 0.953, green: 0.961, blue: 0.973)
    static let surface = Color.white
    static let control = Color(red: 0.969, green: 0.976, blue: 0.984)
    static let ink = Color(red: 0.110, green: 0.153, blue: 0.220)
    static let muted = Color(red: 0.435, green: 0.486, blue: 0.561)
    static let line = Color(red: 0.878, green: 0.898, blue: 0.922)
    static let brand = Color(red: 0.075, green: 0.118, blue: 0.188)
    static let primary = Color(red: 0.067, green: 0.467, blue: 0.431)
    static let danger = Color(red: 0.714, green: 0.302, blue: 0.282)
    static let warning = Color(red: 0.722, green: 0.471, blue: 0.067)
    static let success = Color(red: 0.082, green: 0.584, blue: 0.439)
#else
    private static func color(_ red: CGFloat, _ green: CGFloat, _ blue: CGFloat) -> Color {
        Color(red: red / 255, green: green / 255, blue: blue / 255)
    }

    static let canvas = color(243, 245, 248)
    static let surface = color(255, 255, 255)
    static let control = color(247, 249, 251)
    static let ink = color(28, 39, 56)
    static let muted = color(111, 124, 143)
    static let line = color(224, 229, 235)
    static let brand = color(19, 30, 48)
    static let primary = color(17, 119, 110)
    static let danger = color(182, 77, 72)
    static let warning = color(184, 120, 17)
    static let success = color(21, 149, 112)
#endif
}

public enum AITheme {
    public static let canvas = AIPalette.canvas
    public static let surface = AIPalette.surface
    public static let control = AIPalette.control
    public static let ink = AIPalette.ink
    public static let muted = AIPalette.muted
    public static let line = AIPalette.line
    public static let brand = AIPalette.brand
    public static let primary = AIPalette.primary
    public static let danger = AIPalette.danger
    public static let warning = AIPalette.warning
    public static let success = AIPalette.success

    public static let buttonHeight: CGFloat = 44
    public static let compactButtonHeight: CGFloat = 40
    public static let largeButtonHeight: CGFloat = 50
    public static let toolbarButtonHeight: CGFloat = 38
    public static let iconButtonSize: CGFloat = 44
    public static let buttonRadius: CGFloat = 12
    public static let cardRadius: CGFloat = 16
    public static let compactButtonMinWidth: CGFloat = 58
    public static let regularButtonMinWidth: CGFloat = 76
    public static let toolbarButtonMinWidth: CGFloat = 88
    public static let toolbarButtonWidth: CGFloat = 100
    public static let footerSecondaryButtonWidth: CGFloat = 100
    public static let listActionButtonWidth: CGFloat = 72
}