//
//  CardsView.swift
//  Lunch Card (iOS)
//
//  Created by Joshua Srery on 12/17/20.
//  Additional code by OOPer on Apple Developer Forums
//

import SwiftUI

struct Card: Identifiable {
    let id = UUID()
    let title: String
}

struct CardsView: View {
    @StateObject var cardsInfo = CardsInfo()
    @StateObject var sheetInfo = SheetInfo()
    @State private var editMode = EditMode.inactive
    @State var presentMode = false
    
    var body: some View {
        NavigationView {
            List {
                ForEach(cardsInfo.cards) { card in
                    NavigationLink(destination: CardFullView(cname: card.cname, name: card.name, id: card.id, code: card.code, color: card.color)) {
                        CardRow(name: card.name, id: card.id, cname: card.cname, code: card.code, color: card.color)
                        
                    }
                }
                .onDelete(perform: onDelete)
                .onMove(perform: onMove)
            }.listStyle(PlainListStyle())
            .navigationTitle("Cards")
            .toolbar {
                ToolbarItem(placement: .navigationBarLeading) {
                    EditButton()
                }
                ToolbarItem(placement: .navigationBarLeading) {
                    NavigationLink(
                        destination: Text("Instructions"),
                        label: {
                            Image(systemName: "info.circle")
                        })
                }
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button(action: {
                        self.sheetInfo.showSheetView.toggle()
                    }) {
                        Image(systemName: "plus")
                    }
                }
            }
            .environment(\.editMode, $editMode)
            .sheet(isPresented: $sheetInfo.showSheetView) {
                AddView(cardsInfo: cardsInfo, sheetInfo: sheetInfo)
            }
            .onAppear {
                cardsInfo.loadCards()
            }
        }
    }
    
    private func onDelete(offsets: IndexSet) {
        self.presentMode.toggle()
        cardsInfo.cards.remove(atOffsets: offsets)
        cardsInfo.saveCards()
    }
    
    private func onMove(source: IndexSet, destination: Int) {
        cardsInfo.cards.move(fromOffsets: source, toOffset: destination)
        cardsInfo.saveCards()
    }
}