element-ios/RiotSwiftUI/Modules/Common/Util/ScreenTrackerViewModifier.swift

// 
// Copyright 2021 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import SwiftUI

/// `ScreenTrackerViewModifier` is a helper class used to track PostHog screen from SwiftUI screens.
struct ScreenTrackerViewModifier: ViewModifier {
    let screen: AnalyticsScreen
    
    @ViewBuilder
    func body(content: Content) -> some View {
        content
            .onAppear {
                #if canImport(MatrixSDK)
                Analytics.shared.trackScreen(screen)
                #endif
            }
    }
}

extension View {
    func track(screen: AnalyticsScreen) -> some View {
        return self.modifier(ScreenTrackerViewModifier(screen: screen))
    }
}