struct ContentView: View {
    @StateObject var locationManager = LocationManager()
    @EnvironmentObject private var inAppPurchaseManager: InAppPurchaseManager
    @Environment(\.requestReview) var requestReview
    
    @State private var visibleRegion: MKCoordinateRegion?
    @State private var searchResults: [MKMapItem] = []
    @State private var selectedResult: MKMapItem?
    @State private var route: MKRoute?
    @State private var selectedTabBarButton = ""
    @State var isShowingBottomSheet = false
    @State private var cameraPosition: MapCameraPosition = .userLocation(followsHeading: true, fallback: .automatic)
    @State var isLocationDeniedViewShown = false
    @State private var defaultSearchText = "EV Charging Points"
    
    private let onboardingTip = OnboardingTip()
    
    var body: some View {
        if locationManager.state == .notDetermined { // User doesn't give location and their first time open the app
            LocationRequestView()
                .task {
                    _ = Task {
                        do {
                            try await inAppPurchaseManager.loadProducts()
                        } catch {
                            print(error)
                        }
                    }
                }
        } else if locationManager.state == .denied && !isLocationDeniedViewShown { // User doesn't give location and isLocationDeniedViewShown is false
            LocationRequestDeniedView(isLocationDeniedViewShown: $isLocationDeniedViewShown)
                .task {
                    _ = Task {
                        do {
                            try await inAppPurchaseManager.loadProducts()
                        } catch {
                            print(error)
                        }
                    }
                }
        } else if locationManager.state == .denied && isLocationDeniedViewShown { // User doesn't give location and isLocationDeniedViewShown is true
            if !inAppPurchaseManager.hasUnlockedPro {
                VStack(spacing: 0) {
                    BannerAd(unitID: "ca-app-pub-2327375927149500/2020038616")
                        .background(Color.bannerBG)
                        .frame(maxWidth: .infinity, maxHeight: 50)
                }
                .frame(maxWidth: .infinity, maxHeight: 50)
                .background(Color.bannerBG)
                .padding(.bottom, -10)
            }
            
            LocationRequestDeniedMapView(
                cameraPosition: $cameraPosition,
                searchResults: $searchResults,
                selectedResult: $selectedResult,
                route: $route,
                visibleRegion: $visibleRegion,
                defaultSearchText: $defaultSearchText,
                isLocationDeniedViewShown: $isLocationDeniedViewShown,
                isShowingBottomSheet: $isShowingBottomSheet
            )
            .task {
                _ = Task {
                    do {
                        try await inAppPurchaseManager.loadProducts()
                    } catch {
                        print(error)
                    }
                }
            }
        } else { // User give location permission
            if !inAppPurchaseManager.hasUnlockedPro {
                VStack(spacing: 0) {
                    BannerAd(unitID: "ca-app-pub-2327375927149500/2020038616")
                        .background(Color.bannerBG)
                        .frame(maxWidth: .infinity, maxHeight: 50)
                }
                .frame(maxWidth: .infinity, maxHeight: 50)
                .background(Color.bannerBG)
                .padding(.bottom, -10)
            }
            
            LocationRequestIsOnView(
                cameraPosition: $cameraPosition,
                searchResults: $searchResults,
                selectedResult: $selectedResult,
                route: $route,
                visibleRegion: $visibleRegion,
                defaultSearchText: $defaultSearchText,
                isLocationDeniedViewShown: $isLocationDeniedViewShown,
                isShowingBottomSheet: $isShowingBottomSheet
            )
            .task {
                _ = Task {
                    do {
                        try await inAppPurchaseManager.loadProducts()
                    } catch {
                        print(error)
                    }
                }
            }
        }
    }
}