din/compose

import Foundation
import SwiftUI

public struct ComposeTabViewStyle {
    
    public var background : AnyView
    public var foregroundColor : Color
    public var tintColor : Color
    
    public var height : CGFloat
    public var padding : CGFloat
    public var backgroundHeight : CGFloat
    
    public var shouldShowDivider : Bool
    
    public init<Background : View>(background : Background = Color.clear,
                                   foregroundColor : Color = .white,
                                   tintColor : Color = .blue,
                                   height : CGFloat = 40,
                                   padding : CGFloat = -16,
                                   backgroundHeight : CGFloat = 100,
                                   shouldShowDivider : Bool = true) {
        self.background = AnyView(background)
        self.foregroundColor = foregroundColor
        self.tintColor = tintColor
        self.height = height
        self.padding = padding
        self.backgroundHeight = backgroundHeight
        self.shouldShowDivider = shouldShowDivider
    }
    
}

public typealias ComposeTabBarViewRepeatedAction = () -> Void

private struct ComposeTabViewStyleKey : EnvironmentKey {
    
    static let defaultValue: ComposeTabViewStyle = ComposeTabViewStyle()
    
}

private struct ComposeTabBarViewRepeatedActionKey : EnvironmentKey {
    
    static let defaultValue: ComposeTabBarViewRepeatedAction? = nil
    
}

extension EnvironmentValues {
    
    public var composeTabViewStyle : ComposeTabViewStyle {
        get { self[ComposeTabViewStyleKey.self] }
        set { self[ComposeTabViewStyleKey.self] = newValue }
    }
    
    public var composeTabBarViewRepeatedAction : ComposeTabBarViewRepeatedAction? {
        get { self[ComposeTabBarViewRepeatedActionKey.self] }
        set { self[ComposeTabBarViewRepeatedActionKey.self] = newValue }
    }
    
}

extension View {
    
    public func composeTabViewStyle(_ style : ComposeTabViewStyle) -> some View {
        self.environment(\.composeTabViewStyle, style)
    }
    
    public func composeTabBarViewRepeatedAction(_ action : @escaping ComposeTabBarViewRepeatedAction) -> some View {
        self.environment(\.composeTabBarViewRepeatedAction, action)
    }
    
}