//
//  ContentView.swift
//  Map
//
//  Created by Ruben Beltran del Rio on 2/1/21.
//

import SwiftUI
import CoreData

struct MapDetailView: View {
    @Environment(\.managedObjectContext) private var viewContext
    
    @ObservedObject var map: Map
    
    @State private var selectedEvolution = StageType.General

    var body: some View {
        VSplitView {
        VStack {
            TextField("Title", text: Binding($map.title, ""), onCommit:  {
                try? viewContext.save()
            })
            Picker("Evolution", selection: $selectedEvolution) {
                ForEach(StageType.allCases) { stage in
                    Text(Stage.title(stage)).tag(stage)
                }
            }
            TextEditor(text: Binding($map.content, "")).onChange(of: map.content) { _ in
                try? viewContext.save()
            }.font(Font.system(size: 16, design: .monospaced))
        }
            ScrollView([.horizontal, .vertical]) {
                MapRenderView(map: map, evolution: Stage.stages(selectedEvolution))
            }
        }
    }
}

struct MapDetailView_Previews: PreviewProvider {
    static var previews: some View {
        MapDetailView(map: Map()).environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
    }
}