featuer: add completions screen

Author: osugikoji

sample/ios/YChatApp/App/Presenter/Home/HomeView.swift

@@ -21,6 +21,7 @@ internal struct HomeView: View {
                 Group {
                     switch selectedMenu {
                     case .models: ModelsView()
+                    case .completions: CompletionsView()
                     case .chatCompletions: ChatCompletionsView()
                     default: Feedback(state: .construction)
                     }

sample/ios/YChatApp/Features/Completions/CompletionsView.swift

@@ -28,11 +28,12 @@ struct CompletionsView: View {
             .opacity(viewModel.isLoading ? 0.4 : 1)
             ButtonContained(
                 "Submit",
-                isEnabled: !viewModel.input.isEmpty
+                isEnabled: !viewModel.input.isEmpty && !viewModel.isLoading,
+                onAction: { viewModel.requestCompletions() }
             )
             .padding(.top, 16)
             .padding(.bottom, 24)
-            OutputBox(states: [])
+            OutputBox(states: viewModel.outputBoxStates)
         }
         .padding(16)
         .fullScreen()

sample/ios/YChatApp/Features/Completions/ViewModel/CompletionsViewModel.swift

@@ -24,19 +24,30 @@ internal class CompletionsViewModel: ObservableObject {
     }
 
     @MainActor
-    func fetchListModels() {
+    func requestCompletions() {
         let completions = yChat.completion()
             .setInput(input: input)
         outputBoxStates = []
         outputBoxStates.append(OutputState.text(text: input))
+        setLoading(isLoading: true)
         Task.init {
-            
             do {
                 let result = try await completions.execute()
-                
+                setLoading(isLoading: false)
+                outputBoxStates.append(OutputState.text(text: result, isMarked: true))
             } catch {
-                
+                setLoading(isLoading: false)
+                outputBoxStates.append(OutputState.error)
             }
         }
     }
+    
+    private func setLoading(isLoading: Bool) {
+        self.isLoading = isLoading
+        if isLoading {
+            outputBoxStates.append(OutputState.loading)
+        } else {
+            outputBoxStates.removeAll { $0 == .loading }
+        }
+    }
 }

sample/ios/YChatApp/UI/Component/Button/ButtonContained.swift

@@ -39,6 +39,7 @@ struct ButtonContained: View {
         }
         .background(backgroundColor)
         .cornerRadius(8)
+        .disabled(!isEnabled)
     }
 }