A SwiftUI button style for a toggle button with bouncy touch feedback

LikeButton.swift

struct ContentView: View {
    @State var isLiked: Bool = false

    var body: some View {
        Button {
            isLiked.toggle()
        } label: {
            Image(systemName: isLiked ? "heart.fill" : "heart")
        }
        .imageScale(.large)
        .buttonStyle(LikeButtonStyle(isOn: isLiked))
        .tint(.red)
    }
}

struct LikeButtonStyle: ButtonStyle {
    var isOn: Bool

    func makeBody(configuration: Configuration) -> some View {
        configuration.label
            .foregroundStyle(foregroundStyle)
            .animation(nil, value: isOn)
            .brightness(brightness(configuration: configuration))
            .animation(colorAnimation(configuration: configuration), value: isOn)
            .scaleEffect(configuration.isPressed && !isOn ? 0.6 : 1.0)
            .animation(scaleAnimation(configuration: configuration), value: isOn)
    }

    var foregroundStyle: AnyShapeStyle {
        if isOn {
            return AnyShapeStyle(.tint)
        } else {
            return AnyShapeStyle(.black)
        }
    }

    func brightness(configuration: Configuration) -> Double {
        switch (configuration.isPressed, isOn) {
        case (true, true): return 0.8
        default: return 0
        }
    }

    func colorAnimation(configuration: Configuration) -> Animation? {
        if configuration.isPressed {
            return nil
        } else {
            return .default
        }
    }

    func scaleAnimation(configuration: Configuration) -> Animation? {
        switch (configuration.isPressed, isOn) {
        case (true, _): return nil
        case (false, false):
            return .default
        case (false, true):
            return .spring(response: 0.2, dampingFraction: 0.3)
        }
    }
}