//
//  UIDesignStyle.swift
//  SportsTime
//
//  UI design style variants for the home screen.
//

import SwiftUI

/// Available UI design aesthetics for the home screen
enum UIDesignStyle: String, CaseIterable, Identifiable, Codable {
    case classic = "Classic"
    case classicAnimated = "Classic Animated"

    var id: String { rawValue }

    var description: String {
        switch self {
        case .classic:
            return "The original SportsTime design"
        case .classicAnimated:
            return "Classic with animated sports backgrounds"
        }
    }

    var iconName: String {
        switch self {
        case .classic: return "star.fill"
        case .classicAnimated: return "sparkles"
        }
    }

    var accentColor: Color {
        switch self {
        case .classic: return Color(red: 1.0, green: 0.45, blue: 0.2) // Warm Orange
        case .classicAnimated: return Color(red: 1.0, green: 0.45, blue: 0.2) // Warm Orange (same as Classic)
        }
    }
}

// MARK: - Design Style Manager

@Observable
@MainActor
final class DesignStyleManager {
    static let shared = DesignStyleManager()

    private let userDefaultsKey = "selectedUIDesignStyle"

    private(set) var currentStyle: UIDesignStyle {
        didSet {
            UserDefaults.standard.set(currentStyle.rawValue, forKey: userDefaultsKey)
        }
    }

    private init() {
        if let savedValue = UserDefaults.standard.string(forKey: userDefaultsKey),
           let style = UIDesignStyle(rawValue: savedValue) {
            self.currentStyle = style
        } else {
            self.currentStyle = .classic // Default to original design
        }
    }

    func setStyle(_ style: UIDesignStyle) {
        currentStyle = style
    }

    /// Convenience property for animation toggle
    var animationsEnabled: Bool {
        get { currentStyle == .classicAnimated }
        set { currentStyle = newValue ? .classicAnimated : .classic }
    }
}

// MARK: - Environment Key

private struct DesignStyleKey: EnvironmentKey {
    static let defaultValue: UIDesignStyle = .classic
}

extension EnvironmentValues {
    var designStyle: UIDesignStyle {
        get { self[DesignStyleKey.self] }
        set { self[DesignStyleKey.self] = newValue }
    }
}