Tusker/Tusker/Views/AlertWithData.swift

//
//  AlertWithData.swift
//  Tusker
//
//  Created by Shadowfacts on 11/9/22.
//  Copyright © 2022 Shadowfacts. All rights reserved.
//

import SwiftUI

struct AlertWithData<Data, A: View, M: View>: ViewModifier {
    let title: LocalizedStringKey
    @Binding var data: Data?
    let actions: (Data) -> A
    let message: (Data) -> M
    
    private var isPresented: Binding<Bool> {
        Binding(get: {
            data != nil
        }, set: { newValue in
            guard !newValue else {
                fatalError("Cannot set isPresented to true without data")
            }
            data = nil
        })
    }
    
    init(title: LocalizedStringKey, data: Binding<Data?>, @ViewBuilder actions: @escaping (Data) -> A, @ViewBuilder message: @escaping (Data) -> M) {
        self.title = title
        self._data = data
        self.actions = actions
        self.message = message
    }
    
    func body(content: Content) -> some View {
        content
            .alert(title, isPresented: isPresented, presenting: data, actions: actions, message: message)
    }
}

extension View {
    func alertWithData<Data, A: View, M: View>(_ title: LocalizedStringKey, data: Binding<Data?>, @ViewBuilder actions: @escaping (Data) -> A, @ViewBuilder message: @escaping (Data) -> M) -> some View {
        modifier(AlertWithData(title: title, data: data, actions: actions, message: message))
    }
}