Tedx.tao

README.md

@@ -1,4 +1,4 @@
-# Homework 5: Clean Architecture User Login System Example
++# Homework 5: Clean Architecture User Login System Example
 
 ## Assignment Preamble
 

src/main/java/app/MainWithDB.java

@@ -52,7 +52,6 @@ public static void main(String[] args) {
         final LoggedInViewModel loggedInViewModel = new LoggedInViewModel();
         final SignupViewModel signupViewModel = new SignupViewModel();
 
-        // TODO Task 1.1 in a copy of this file, change this line to use the in-memory DAO.
         final DBUserDataAccessObject userDataAccessObject = new DBUserDataAccessObject(new CommonUserFactory());
 
         final SignupView signupView = SignupUseCaseFactory.create(viewManagerModel, loginViewModel,

src/main/java/app/MainWithInMemory.java

@@ -0,0 +1,74 @@
+package app;
+
+import data_access.DBUserDataAccessObject;
+import data_access.InMemoryUserDataAccessObject;
+import entity.CommonUserFactory;
+import interface_adapter.ViewManagerModel;
+import interface_adapter.logged_in.LoggedInViewModel;
+import interface_adapter.login.LoginViewModel;
+import interface_adapter.signup.SignupViewModel;
+import view.LoggedInView;
+import view.LoginView;
+import view.SignupView;
+import view.ViewManager;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * The version of Main with an external database used to persist user data.
+ */
+public class MainWithInMemory {
+
+    /**
+     * The main method for starting the program with an external database used to persist user data.
+     * @param args input to main
+     */
+    public static void main(String[] args) {
+        // Build the main program window, the main panel containing the
+        // various cards, and the layout, and stitch them together.
+
+        // The main application window.
+        final JFrame application = new JFrame("Login Example");
+        application.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+
+        final CardLayout cardLayout = new CardLayout();
+
+        // The various View objects. Only one view is visible at a time.
+        final JPanel views = new JPanel(cardLayout);
+        application.add(views);
+
+        // This keeps track of and manages which view is currently showing.
+        final ViewManagerModel viewManagerModel = new ViewManagerModel();
+        new ViewManager(views, cardLayout, viewManagerModel);
+
+        // The data for the views, such as username and password, are in the ViewModels.
+        // This information will be changed by a presenter object that is reporting the
+        // results from the use case. The ViewModels are "observable", and will
+        // be "observed" by the Views.
+        final LoginViewModel loginViewModel = new LoginViewModel();
+        final LoggedInViewModel loggedInViewModel = new LoggedInViewModel();
+        final SignupViewModel signupViewModel = new SignupViewModel();
+
+        // TODO Task[done] 1.1 in a copy of this file, change this line to use the in-memory DAO.
+        final InMemoryUserDataAccessObject userDataAccessObject = new InMemoryUserDataAccessObject();
+
+        final SignupView signupView = SignupUseCaseFactory.create(viewManagerModel, loginViewModel,
+                                                                  signupViewModel, userDataAccessObject);
+        views.add(signupView, signupView.getViewName());
+
+        final LoginView loginView = LoginUseCaseFactory.create(viewManagerModel, loginViewModel,
+                                                               loggedInViewModel, userDataAccessObject);
+        views.add(loginView, loginView.getViewName());
+
+        final LoggedInView loggedInView = ChangePasswordUseCaseFactory.create(viewManagerModel,
+                                                                              loggedInViewModel, userDataAccessObject);
+        views.add(loggedInView, loggedInView.getViewName());
+
+        viewManagerModel.setState(signupView.getViewName());
+        viewManagerModel.firePropertyChanged();
+
+        application.pack();
+        application.setVisible(true);
+    }
+}

src/main/java/data_access/DBUserDataAccessObject.java

@@ -65,6 +65,16 @@ public User get(String username) {
         }
     }
 
+    @Override
+    public void setCurrentUser(String name) {
+
+    }
+
+    @Override
+    public String getCurrentUser() {
+        return "";
+    }
+
     @Override
     public boolean existsByName(String username) {
         final OkHttpClient client = new OkHttpClient().newBuilder()

src/main/java/data_access/FileUserDataAccessObject.java

@@ -92,6 +92,16 @@ public User get(String username) {
         return accounts.get(username);
     }
 
+    @Override
+    public void setCurrentUser(String name) {
+
+    }
+
+    @Override
+    public String getCurrentUser() {
+        return "";
+    }
+
     @Override
     public boolean existsByName(String identifier) {
         return accounts.containsKey(identifier);

src/main/java/data_access/InMemoryUserDataAccessObject.java

@@ -35,6 +35,16 @@ public User get(String username) {
         return users.get(username);
     }
 
+    @Override
+    public void setCurrentUser(String name) {
+        this.currentUser = name;
+    }
+
+    @Override
+    public String getCurrentUser() {
+        return this.currentUser;
+    }
+
     @Override
     public void changePassword(User user) {
         // Replace the old entry with the new password

src/main/java/interface_adapter/logged_in/LoggedInPresenter.java

@@ -20,13 +20,16 @@ public LoggedInPresenter(ViewManagerModel viewManagerModel,
 
     @Override
     public void prepareSuccessView(ChangePasswordOutputData outputData) {
-        // TODO update the viewmodel!
+        // TODO[done] update the viewmodel!
+        loggedInViewModel.setPasswordChanged(true);
         loggedInViewModel.firePropertyChanged("password");
 
     }
 
     @Override
     public void prepareFailView(String error) {
         // TODO update the viewmodel!
+        loggedInViewModel.setErrorMessage(error);
+        loggedInViewModel.firePropertyChanged("error");
     }
 }

src/main/java/interface_adapter/logged_in/LoggedInViewModel.java

@@ -6,10 +6,27 @@
  * The View Model for the Logged In View.
  */
 public class LoggedInViewModel extends ViewModel<LoggedInState> {
+    private boolean passwordChanged;
+    private String errorMessage;
 
     public LoggedInViewModel() {
         super("logged in");
         setState(new LoggedInState());
     }
 
+    public void setPasswordChanged(boolean changed) {
+        this.passwordChanged = changed;
+    }
+
+    public boolean isPasswordChanged() {
+        return this.passwordChanged;
+    }
+
+    public void setErrorMessage(String errorMessage) {
+        this.errorMessage = errorMessage;
+    }
+
+    public String getErrorMessage() {
+        return this.errorMessage;
+    }
 }

src/main/java/use_case/login/LoginInteractor.java

@@ -30,7 +30,7 @@ public void execute(LoginInputData loginInputData) {
             else {
 
                 final User user = userDataAccessObject.get(loginInputData.getUsername());
-
+                userDataAccessObject.setCurrentUser(user.getName());
                 final LoginOutputData loginOutputData = new LoginOutputData(user.getName(), false);
                 loginPresenter.prepareSuccessView(loginOutputData);
             }

src/main/java/use_case/login/LoginUserDataAccessInterface.java

@@ -27,4 +27,7 @@ public interface LoginUserDataAccessInterface {
      */
     User get(String username);
 
+    void setCurrentUser(String name);
+
+    String getCurrentUser();
 }

src/test/java/use_case/login/LoginInteractorTest.java

@@ -1,6 +1,7 @@
 package use_case.login;
 
 import data_access.InMemoryUserDataAccessObject;
+import entity.CommonUser;
 import entity.CommonUserFactory;
 import entity.User;
 import entity.UserFactory;
@@ -95,4 +96,31 @@ public void prepareFailView(String error) {
         LoginInputBoundary interactor = new LoginInteractor(userRepository, failurePresenter);
         interactor.execute(inputData);
     }
+
+    public void successUserLoggedInTest() {
+        LoginInputData inputData = new LoginInputData("Paul", "password");
+        InMemoryUserDataAccessObject userDataAccessObject = new InMemoryUserDataAccessObject();
+        userDataAccessObject.save(new CommonUser("Paul", "password"));
+
+        LoginOutputBoundary loginPresenter = new LoginOutputBoundary() {
+            @Override
+            public void prepareSuccessView(LoginOutputData outputData) {
+                assertEquals("Paul", outputData.getUsername());
+            }
+
+            @Override
+            public void prepareFailView(String error) {
+                fail("Expected successful login, but login failed with error: " + error);
+            }
+        };
+
+        LoginInteractor interactor = new LoginInteractor(userDataAccessObject, loginPresenter);
+
+        // Act: Before login, ensure no user is logged in, then execute login
+        assertNull(userDataAccessObject.getCurrentUser());  // Verify initial state (no user logged in)
+        interactor.execute(inputData);  // Perform login for "Paul"
+
+        // Assert: Check that the current user is now "Paul"
+        assertEquals("Paul", userDataAccessObject.getCurrentUser());
+    }
 }