Feature/3811 appconfig

bwi/WelcomeExperience/WelcomeExperienceView.swift

@@ -36,6 +36,11 @@ fileprivate struct Page: View {
     
     @State var buttonCallback: (() -> Void)?
     
+    private let service = ServerDowntimeDefaultService()
+    @State private var isFetchingDowntime = false
+    @State private var showAlert = false
+    @State private var activeAlert: ServerMaintenanceAlertType = .showInvalidAppVersionAlert
+    
     var body: some View {
         GeometryReader { geometry in
             VStack(alignment: .center, spacing: 40) {
@@ -54,8 +59,9 @@ fileprivate struct Page: View {
                     .multilineTextAlignment(.center)
                 Spacer()
                 
+                // bwi #3811: check for maintenance when the server selection is skipped
                 if let doneButton = doneButton, let buttonCallback = buttonCallback {
-                    Button(action: buttonCallback) {
+                    Button(action: startButtonAction) {
                         Text(doneButton)
                             .foregroundColor(.white)
                             .padding(.vertical, 10)
@@ -64,6 +70,11 @@ fileprivate struct Page: View {
                            .clipShape(RoundedRectangle(cornerRadius: 10))
                     }
                     .padding(.bottom, 100)
+                    .alert(isPresented: $showAlert, content: {
+                        service.alert(alertType: activeAlert) {
+                            buttonCallback()
+                        }
+                    })
                 }
             }
             .padding(.top, 100)
@@ -71,6 +82,49 @@ fileprivate struct Page: View {
             .frame(maxWidth: .infinity, maxHeight: .infinity)
         }
     }
+    
+    private func startButtonAction() {
+        guard let buttonCallback = buttonCallback else {
+            return
+        }
+        
+        if BWIBuildSettings.shared.enableMaintenanceInfoOnLogin && BWIBuildSettings.shared.avoidServerSelectionOnAppConfig && AppConfigService.shared.isAppConfig {
+            isFetchingDowntime = true   // show progresview
+            
+            if BWIBuildSettings.shared.useTestDataForDowntime {
+                service.fetchDowntimes {
+                    self.isFetchingDowntime = false // hide progressview
+                    self.showAlertIfNeeded()
+                }
+            } else {
+                service.fetchDowntimesWithDirectRequest { success in
+                    DispatchQueue.main.async {
+                        self.isFetchingDowntime = false   // hide progressview
+                        if success {
+                            self.showAlertIfNeeded()
+                        } else {
+                            
+                        }
+                    }
+                }
+            }
+        } else {
+            buttonCallback()
+        }
+    }
+    
+    private func showAlertIfNeeded() {
+        guard let buttonCallback = buttonCallback else {
+            return
+        }
+        
+        if service.showAlert() {
+            activeAlert = service.alertType()
+            showAlert = true
+        } else {
+            buttonCallback()
+        }
+    }
 }
 
 struct WelcomeExperienceView_Previews: PreviewProvider {