ThemeColorModifier.swift

////
//ThemeColorModifier.swift
//DatePickerExample
//
//Created by Basel Baragabah on 01/01/2024.
//Copyright © 2024 Basel Baragabah. All rights reserved.
//

import SwiftUI

@available(iOS 14.0, *)
public struct DatePickerThemeKey: EnvironmentKey {
    public static var defaultValue: DatePickerTheme = DatePickerTheme()
}

public extension EnvironmentValues {
    var datePickerTheme: DatePickerTheme {
        get { self[DatePickerThemeKey.self] }
        set { self[DatePickerThemeKey.self] = newValue }
    }
}

public extension View {
    func datePickerTheme(_ theme: DatePickerTheme) -> some View {
        self.environment(\.datePickerTheme, theme)
    }
    
    func datePickerTheme(
        main: DatePickerTheme.Main = .init()
    ) -> some View {
        self.environment(\.datePickerTheme, DatePickerTheme(main: main))
    }
}

public struct DatePickerTheme {
    public let main: Main
    
    public init(main: DatePickerTheme.Main = .init()) {
        self.main = main
    }
}

public extension DatePickerTheme {
    struct Main {
        public let accentColor: Color
        public let monthTitle: Color
        public let daysName: Color
        public let daysNumbers: Color
        public let previousDaysNumber: Color
        public let backgroundColor: Color
        
        public init(accentColor: Color = .blue,
                    monthTitle: Color = Color(color: .label),
                    daysName: Color = .gray,
                    daysNumbers: Color = Color(color:  .label),
                    previousDaysNumber: Color = .gray,
                    backgroundColor: Color = Color(color: .systemBackground)) {
            
            self.accentColor = accentColor
            self.monthTitle = monthTitle
            self.daysName = daysName
            self.daysNumbers = daysNumbers
            self.previousDaysNumber = previousDaysNumber
            self.backgroundColor = backgroundColor
            
        }
    }
}