import SwiftUI

/// Developer debug menu, available only in DEBUG builds.
///
/// This is the primary tool for testing the **interaction loop** without any
/// hardware. It drives a `SimulatedAdapter` inside `PresenceEngine`, letting
/// you simulate encounters, waves, and even a crowd — exactly as if real
/// users were walking by. In the simulator, you can fully exercise silhouette
/// → wave → reveal → chat with zero physical devices.
///
/// Enabled via the `#if DEBUG` guard so it never ships to production.
struct DebugMenu: View {
    @EnvironmentObject private var appState: AppState

    var body: some View {
        #if DEBUG
        NavigationStack {
            Form {
                Section("Simulation") {
                    Button("Simulate someone walking by") {
                        appState.simulateEncounter()
                    }
                    Button("Simulate a crowd (20 people)") {
                        appState.simulateCrowd()
                    }
                    Toggle("Auto-broadcast nearby users", isOn: $appState.autoBroadcast)
                }

                Section("Backend") {
                    Label("Local server (localhost:8080)", systemImage: "network")
                        .foregroundColor(.secondary)
                    Button("Reconnect socket") {
                        appState.restartRealtime()
                    }
                }

                Section("Info") {
                    Label("Simulator mode — no hardware", systemImage: "iphone.simulator")
                        .foregroundColor(.secondary)
                }
            }
            .navigationTitle("Debug")
        }
        #else
        EmptyView()
        #endif
    }
}