add detail alert

dimensionhub/Views/DetailView.swift

@@ -71,6 +71,11 @@ final class DetailModel {
         
     }
     
+    enum FollowResult {
+        case success
+        case error(String, String)
+    }
+    
     var name: String = ""
     var summary: String = ""
     var thumb: String = ""
@@ -113,12 +118,11 @@ final class DetailModel {
     }
     
     @MainActor
-    func onTapFollowButton(userId: Int, id: Int, status: String) async {
+    func onTapFollowButton(userId: Int, id: Int, status: String) async -> FollowResult {
         let response = await API.followDrama(userId: userId, id: id, status: status, as: [String].self)
         switch response {
         case .error(let code, let message):
-            print(code)
-            print(message)
+            return .error("错误", message)
         case .result(let newStatuses):
             self.statuses = newStatuses.flatMap({ s in
                 if let status = DramaStatus(s) {
@@ -127,6 +131,7 @@ final class DetailModel {
                     return []
                 }
             })
+            return .success
         }
     }
     
@@ -135,6 +140,11 @@ final class DetailModel {
 struct DetailView: View {
     @State var detailModel = DetailModel()
     @State var showAllSummary: Bool = false
+    
+    // 错误提示信息
+    @State var showAlert: Bool = false
+    @State var errorInfo: (String, String) = ("", "")
+    
     let id: Int
     
     var body: some View {
@@ -175,7 +185,14 @@ struct DetailView: View {
                 ForEach(detailModel.statuses, id: \.status) { status in
                     FollowButtonView(dramaStatus: status) { followStatus in
                         Task {
-                            await detailModel.onTapFollowButton(userId: 1, id: id, status: followStatus)
+                            let result = await detailModel.onTapFollowButton(userId: 1, id: id, status: followStatus)
+                            switch result {
+                            case .success:
+                                ()
+                            case .error(let title, let message):
+                                self.errorInfo = (title, message)
+                                self.showAlert = true
+                            }
                         }
                     }
                 }
@@ -246,6 +263,9 @@ struct DetailView: View {
             Spacer()
         }
         .frame(width: 370, alignment: .center)
+        .alert(isPresented: $showAlert) {
+            Alert(title: Text(self.errorInfo.0), message: Text(self.errorInfo.1), dismissButton: .default(Text("OK")))
+        }
         .task {
             await detailModel.loadData(userId: 1, id: self.id)
             print(detailModel.summary)