//
//  ViewUtiles.swift
//  Bunch O' Dice
//
//  Created by Rory Hinnen on 22/6/12.
//

import Foundation
import SwiftUI

class SheetState<State>: ObservableObject {
    @Published var isShowing = false
    @Published var state: State? {
        didSet { isShowing = state != nil }
    }
}

class SettingsSheet: SheetState<SettingsSheet.State> {
    enum State {
        case settings, history
    }
}

extension CaseIterable where Self: Equatable {
    mutating func next() {
        let allCases = Self.allCases
        // just a sanity check, as the possibility of a enum case to not be
        // present in `allCases` is quite low
        guard let selfIndex = allCases.firstIndex(of: self) else { return }
        let nextIndex = Self.allCases.index(after: selfIndex)
        self = allCases[nextIndex == allCases.endIndex ? allCases.startIndex : nextIndex]
    }
}