import SwiftUI

struct ContentView: View {
    @EnvironmentObject var iapService: IAPService
    @EnvironmentObject var adMobService: AdMobService
    @AppStorage("onboardingCompleted") private var onboardingCompleted = false

    @State private var selectedTab = 0

    var body: some View {
        Group {
            if !onboardingCompleted {
                OnboardingView(onboardingCompleted: $onboardingCompleted)
            } else {
                mainContent
            }
        }
    }

    private var mainContent: some View {
        ZStack(alignment: .bottom) {
            TabView(selection: $selectedTab) {
                DashboardView()
                    .tabItem {
                        Label("Dashboard", systemImage: "chart.pie.fill")
                    }
                    .tag(0)

                SourceListView()
                    .tabItem {
                        Label("Sources", systemImage: "list.bullet")
                    }
                    .tag(1)

                ChartsContainerView()
                    .tabItem {
                        Label("Charts", systemImage: "chart.xyaxis.line")
                    }
                    .tag(2)

                SettingsView()
                    .tabItem {
                        Label("Settings", systemImage: "gearshape.fill")
                    }
                    .tag(3)
            }

            // Banner ad at bottom for free users
            if !iapService.isPremium {
                VStack(spacing: 0) {
                    Spacer()
                    BannerAdView()
                        .frame(height: 50)
                }
                .padding(.bottom, 49) // Account for tab bar height
            }
        }
    }
}

#Preview {
    ContentView()
        .environmentObject(IAPService())
        .environmentObject(AdMobService())
}