LandingView.swift

import SwiftUI

struct LandingView: View {
    @State private var isChoiceModeNavigated = false
    @State private var isMemoryModeNavigated = false
    private let audioManager = AudioManager.shared
    
    var body: some View {
        NavigationStack {
            VStack(spacing: 40) {
                Text("Welcome to Vibe Pad")
                    .font(.largeTitle)
                    .fontWeight(.bold)
                    .foregroundColor(.primary)
                    .padding()
                
                HStack(spacing: 30) {
                    ModeOptionButton(title: "Choice Mode", color: .blue) {
                        isChoiceModeNavigated = true
                    }
                    .navigationDestination(isPresented: $isChoiceModeNavigated) { ChoiceModeView() }
                    
                    ModeOptionButton(title: "Memory Mode", color: .cyan) {
                        isMemoryModeNavigated = true
                    }
                    .navigationDestination(isPresented: $isMemoryModeNavigated) { MemoryModeView() }
                }
            }
            .padding()
        }
        .onAppear {
            audioManager.introduce(IntroductionMessages.vibePadIntroduction)
        }
        .onChange(of: isChoiceModeNavigated) { _ in audioManager.stopSpeaking() }
        .onChange(of: isMemoryModeNavigated) { _ in audioManager.stopSpeaking() }
    }
}

struct ModeOptionButton: View {
    let title: String
    let color: Color
    let moveMode: () -> Void
    
    var body: some View {
        Button(action: moveMode) {
            Text(title)
                .font(.title2)
                .fontWeight(.semibold)
                .foregroundColor(.white)
                .frame(width: 180, height: 180)
                .background(color)
                .cornerRadius(20)
                .shadow(radius: 5)
        }
    }
}