Recover GoalCommand class

src/main/java/seedu/duke/commands/goal/GoalCommand.java

@@ -0,0 +1,50 @@
+package seedu.duke.commands.goal;
+
+import seedu.duke.Duke;
+import seedu.duke.commands.Command;
+import seedu.duke.commands.CommandResult;
+import seedu.duke.data.GoalList;
+import seedu.duke.data.exception.IncorrectFormatException;
+
+import java.io.IOException;
+
+
+public class GoalCommand extends Command {
+
+    public static final String COMMAND_WORD = "set";
+    public static final String MESSAGE_USAGE = COMMAND_WORD + ": Add a new goal into the goal list\n"
+            + "\tExample: " + COMMAND_WORD + " 123 on 18/12/2023";
+    public String feedbackToUser;
+
+
+    public GoalCommand(String cmd) {
+        super(cmd);
+    }
+
+    /**
+     * The execution of goalCommand new a goal record into the goal list.
+     * If error occurs in creating goal record, possibly includes
+     * incorrect format of command or invalid number is input.
+     * @return result of adding goal successfully message
+     */
+    @Override
+    public CommandResult execute() {
+        try {
+            feedbackToUser = GoalList.addGoal(this.userCommand, Duke.goalList, Duke.goalStorage);
+        } catch (IncorrectFormatException ife) {
+            feedbackToUser = ife.getMessage();
+        } catch (NumberFormatException nfe) {
+            feedbackToUser = "Please input a valid number for calories.";
+        } catch (IOException io) {
+            feedbackToUser = "Failed to save data. Please check the output file and restart the app.";
+        } catch (Exception e) {
+            feedbackToUser = "Something went wrong, please try again.";
+        }
+
+
+
+
+        return new CommandResult(feedbackToUser);
+    }
+
+}