Completed Task 3 and 4 (Get Top Grade button doesn't work yet)

src/main/java/api/MongoGradeDataBase.java

@@ -261,13 +261,30 @@ public Team getMyTeam() {
                 .addHeader(CONTENT_TYPE, APPLICATION_JSON)
                 .build();
 
-        final Response response;
-        final JSONObject responseBody;
+        try {
+            final Response response = client.newCall(request).execute();
+            final JSONObject responseBody = new JSONObject(response.body().string());
 
-        // TODO Task 3b: Implement the logic to get the team information
+            if (responseBody.getInt(STATUS_CODE) == SUCCESS_CODE) {
+                final JSONObject team = responseBody.getJSONObject("team");
+                final JSONArray membersArray = team.getJSONArray("members");
+                final String[] members = new String[membersArray.length()];
+                for (int i = 0; i < membersArray.length(); i++) {
+                    members[i] = membersArray.getString(i);
+                }
+                return Team.builder()
+                        .name(team.getString(NAME))
+                        .members(members)
+                        .build();
+            } else {
+                throw new RuntimeException(responseBody.getString(MESSAGE));
+            }
+        }
+        catch (IOException | JSONException event) {
+            throw new RuntimeException(event);
+        }
         // HINT 1: Look at the formTeam method to get an idea on how to parse the response
         // HINT 2: You may find it useful to just initially print the contents of the JSON
         //         then work on the details of how to parse it.
-        return null;
     }
 }

src/main/java/app/Config.java

@@ -66,4 +66,7 @@ public GetAverageGradeUseCase getAverageGradeUseCase() {
     }
 
     // TODO Task 4: add code for the new GetTopGradeUseCase following the same pattern as the other use cases above.
+    public GetTopGradeUseCase getTopGradeUseCase() {
+        return new GetTopGradeUseCase(gradeDataBase);
+    }
 }

src/main/java/app/gui/Application.java

@@ -27,6 +27,7 @@
 import usecase.JoinTeamUseCase;
 import usecase.LeaveTeamUseCase;
 import usecase.LogGradeUseCase;
+import usecase.GetTopGradeUseCase;
 
 /**
  * GUI class to run the GUI for the Grade App.
@@ -55,6 +56,7 @@ public static void main(String[] args) {
         final JoinTeamUseCase joinTeamUseCase = config.joinTeamUseCase();
         final LeaveTeamUseCase leaveTeamUseCase = config.leaveTeamUseCase();
         final GetAverageGradeUseCase getAverageGradeUseCase = config.getAverageGradeUseCase();
+        final GetTopGradeUseCase getTopGradeUseCase = config.getTopGradeUseCase();
 
         // this is the code that runs to set up our GUI
         SwingUtilities.invokeLater(() -> {
@@ -70,7 +72,8 @@ public static void main(String[] args) {
             final JPanel logGradeCard = createLogGradeCard(frame, logGradeUseCase);
             final JPanel formTeamCard = createFormTeamCard(frame, formTeamUseCase);
             final JPanel joinTeamCard = createJoinTeamCard(frame, joinTeamUseCase);
-            final JPanel manageTeamCard = createManageTeamCard(frame, leaveTeamUseCase, getAverageGradeUseCase);
+            final JPanel manageTeamCard = createManageTeamCard(frame, leaveTeamUseCase, getAverageGradeUseCase,
+                    getTopGradeUseCase);
 
             cardPanel.add(defaultCard, "DefaultCard");
             cardPanel.add(getGradeCard, "GetGradeCard");
@@ -324,13 +327,16 @@ public void actionPerformed(ActionEvent e) {
     // TODO Task 4: modify this method so that it takes in a getTopGradeUseCase
     //              Note: this will require you to update the code that calls this method.
     private static JPanel createManageTeamCard(JFrame jFrame, LeaveTeamUseCase leaveTeamUseCase,
-                                               GetAverageGradeUseCase getAverageGradeUseCase) {
+                                               GetAverageGradeUseCase getAverageGradeUseCase, GetTopGradeUseCase
+                                                       getTopGradeUseCase) {
         final JPanel theCard = new JPanel();
         theCard.setLayout(new GridLayout(ROWS, COLS));
         final JTextField courseField = new JTextField(20);
         // make a separate line.
         final JButton getAverageButton = new JButton("Get Average Grade");
         // TODO Task 4: Add another button for "Get Top Grade" (check the getAverageButton for example)
+        final JButton getTopGradeButton = new JButton("Get Top Grade");
+
 
         final JButton leaveTeamButton = new JButton("Leave Team");
         final JLabel resultLabel = new JLabel();
@@ -356,6 +362,20 @@ public void actionPerformed(ActionEvent e) {
             }
         });
 
+        getTopGradeButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                final String course = courseField.getText();
+                try {
+                    final float top = getTopGradeUseCase.getTopGrade(course);
+                    JOptionPane.showMessageDialog(jFrame, "Top Grade: " + top);
+                    courseField.setText("");
+                } catch (org.json.JSONException ex) {
+                    JOptionPane.showMessageDialog(jFrame, ex.getMessage());
+                }
+            }
+        });
+
         // TODO Task 4: Add action listener for getTopGrade button, follow example of getAverageButton
 
         leaveTeamButton.addActionListener(new ActionListener() {
@@ -379,6 +399,7 @@ public void actionPerformed(ActionEvent e) {
         theCard.add(new JLabel("The course you want to calculate the team average for:"));
         theCard.add(courseField);
         theCard.add(getAverageButton);
+        theCard.add(getTopGradeButton);
         theCard.add(leaveTeamButton);
         theCard.add(resultLabel);
         return theCard;

src/main/java/usecase/GetAverageGradeUseCase.java

@@ -29,6 +29,19 @@ public float getAverageGrade(String course) {
         // TODO Task 3a: Complete the logic of calculating the average course grade for
         //              your team members. Hint: the getGrades method might be useful.
 
+        for (String username : team.getMembers()) {
+            final Grade[] grades = gradeDataBase.getGrades(username);
+            if (grades == null) {
+                continue;
+            }
+            for (Grade g : grades) {
+                if (g.getCourse().equals(course)) {
+                    sum += g.getGrade();
+                    count += 1;
+                }
+            }
+        }
+
         if (count == 0) {
             return 0;
         }