cs193p-memorize/Memorize/ContentView.swift

//
//  ContentView.swift
//  Memorize
//
//  Created by ching on 2023/2/12.
//

import SwiftUI

struct ContentView: View {
    @ObservedObject var viewModel: EmojiMemoryGame
    var body: some View {
        ScrollView {
            LazyVGrid(columns: [GridItem(.adaptive(minimum: 65))]) {
                ForEach(viewModel.cards) {
                    card in CardView(card: card).aspectRatio(2 / 3, contentMode: .fit)
                        .onTapGesture {
                            viewModel.choose(card)
                        }
                }
            }
        }
        .foregroundColor(/*@START_MENU_TOKEN@*/ .red/*@END_MENU_TOKEN@*/)
        .padding(.horizontal)
    }
}

struct CardView: View {
    let card: MemoryGame<String>.Card
    var body: some View {
        ZStack {
            let shape = RoundedRectangle(cornerRadius: 20.0)
            if card.isFaceUp {
                shape.fill().foregroundColor(.white)
                shape.strokeBorder(lineWidth: 3)
                Text(card.content).font(.largeTitle)
            } else if card.isMatched {
                shape.opacity(0)
            } else {
                shape.fill()
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        let game = EmojiMemoryGame()
        ContentView(viewModel: game)
            .preferredColorScheme(.dark)
        ContentView(viewModel: game)
            .preferredColorScheme(.light)
    }
}