OAuth2.AppAuth-iOS.SSO.Embedded.iOS-AppAuth-Basic.ViewController.authorizeWithWebView.authorizeWithWebView.WKUserContentController.swift

// ViewController.swift

// . . .

// MARK: Authorization methods
extension ViewController {

    // . . .

    func authorizeWithWebView(
        configuration: OIDServiceConfiguration,
        clientId: String,
        redirectionUri: String,
        scopes: [String] = [OIDScopeOpenID, OIDScopeProfile],
        completion: @escaping (OIDAuthState?, Error?) -> Void
        ) {

        // . . .

        // Configuring the web view for JavaScript interactions.

        let userContentController = WKUserContentController()
        userContentController.add(self, name: "callback")

        let configuration = WKWebViewConfiguration()
        configuration.userContentController = userContentController

        // Providing the web view class with initial parameters.
        webViewController = WebViewController.init(
            appGroup: appGroup,
            appGroupCookies: appGroupCookies,
            webViewFrame: view.bounds,
            webViewConfiguration: configuration
        )

        // . . .

        }
    }

    // . . .
}

// . . .