WebView.Swift

class WebViewStateModel: ObservableObject {
    @Published var pageTitle: String = "Web View"
    @Published var loading: Bool = false
    @Published var canGoBack: Bool = false
    @Published var goBack: Bool = false
}

struct WebView: View {
     enum NavigationAction {
           case decidePolicy(WKNavigationAction,  (WKNavigationActionPolicy) -> Void) //mendetory
           case didRecieveAuthChallange(URLAuthenticationChallenge, (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) //mendetory
           case didStartProvisionalNavigation(WKNavigation)
           case didReceiveServerRedirectForProvisionalNavigation(WKNavigation)
           case didCommit(WKNavigation)
           case didFinish(WKNavigation)
           case didFailProvisionalNavigation(WKNavigation,Error)
           case didFail(WKNavigation,Error)
       }
       
    @ObservedObject var webViewStateModel: WebViewStateModel
    
    private var actionDelegate: ((_ navigationAction: WebView.NavigationAction) -> Void)?
    
    
    let uRLRequest: URLRequest
    
    
    var body: some View {
        
        WebViewWrapper(webViewStateModel: webViewStateModel,
                       action: actionDelegate,
                       request: uRLRequest)
    }
    /*
     if passed onNavigationAction it is mendetory to complete URLAuthenticationChallenge and decidePolicyFor callbacks
    */
    init(uRLRequest: URLRequest, webViewStateModel: WebViewStateModel, onNavigationAction: ((_ navigationAction: WebView.NavigationAction) -> Void)?) {
        self.uRLRequest = uRLRequest
        self.webViewStateModel = webViewStateModel
        self.actionDelegate = onNavigationAction
    }
    
    init(url: URL, webViewStateModel: WebViewStateModel, onNavigationAction: ((_ navigationAction: WebView.NavigationAction) -> Void)? = nil) {
        self.init(uRLRequest: URLRequest(url: url),
                  webViewStateModel: webViewStateModel,
                  onNavigationAction: onNavigationAction)
    }
}