Merge pull request nus-cs2103-AY2021S2#83 from jellymias/add-assignment-command

Create AddAssignmentCommand

Author: jellymias

src/main/java/seedu/address/logic/commands/exceptions/AddAssignmentCommand.java

@@ -0,0 +1,56 @@
+package seedu.address.logic.commands.exceptions;
+
+import static java.util.Objects.requireNonNull;
+
+import seedu.address.logic.commands.Command;
+import seedu.address.logic.commands.CommandResult;
+import seedu.address.model.Model;
+import seedu.address.model.module.Assignment;
+
+
+public class AddAssignmentCommand extends Command {
+
+    public static final String COMMAND_WORD = "add";
+
+    public static final String MESSAGE_USAGE = COMMAND_WORD + ": Adds an assignment to the module's assignment list. "
+            + "Parameters: "
+            + "m/ " + "MODULE TITLE"
+            + "a/ " + "ASSIGNMENT"
+            + "by/ " + "DEADLINE"
+            + "Example: " + COMMAND_WORD + " "
+            + "m/ " + "CS2103T"
+            + "a/ " + "TP v1.2"
+            + "by/ " + "28/3/2021 2359";
+
+    public static final String MESSAGE_SUCCESS = "New assignment added: %1$s";
+    public static final String MESSAGE_DUPLICATE_ASSIGNMENT = "This assignment already exists in the module";
+
+    private final Assignment toAdd;
+
+    /**
+     * Creates an AddPersonCommand to add the specified {@code Person}
+     */
+    public AddAssignmentCommand(Assignment assignment) {
+        requireNonNull(assignment);
+        toAdd = assignment;
+    }
+
+    @Override
+    public CommandResult execute(Model model) throws CommandException {
+        requireNonNull(model);
+
+        if (model.hasAssignment(toAdd)) {
+            throw new CommandException(MESSAGE_DUPLICATE_ASSIGNMENT);
+        }
+
+        model.addAssignment(toAdd);
+        return new CommandResult(String.format(MESSAGE_SUCCESS, toAdd));
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        return other == this // short circuit if same object
+                || (other instanceof AddAssignmentCommand // instanceof handles nulls
+                && toAdd.equals(((AddAssignmentCommand) other).toAdd));
+    }
+}

src/main/java/seedu/address/model/Model.java

@@ -5,6 +5,7 @@
 
 import javafx.collections.ObservableList;
 import seedu.address.commons.core.GuiSettings;
+import seedu.address.model.module.Assignment;
 import seedu.address.model.person.Person;
 
 /**
@@ -84,4 +85,16 @@ public interface Model {
      * @throws NullPointerException if {@code predicate} is null.
      */
     void updateFilteredPersonList(Predicate<Person> predicate);
+
+    /**
+     * Returns true if an assignment that has the same description and deadline
+     * as {@code assignment} exists in the same module.
+     */
+    boolean hasAssignment(Assignment assignment);
+
+    /**
+     * Adds the given assignment.
+     * {@code assignment} must not already exist in the module it is to be added to.
+     */
+    void addAssignment(Assignment assignment);
 }

src/main/java/seedu/address/model/ModelManager.java

@@ -11,6 +11,7 @@
 import javafx.collections.transformation.FilteredList;
 import seedu.address.commons.core.GuiSettings;
 import seedu.address.commons.core.LogsCenter;
+import seedu.address.model.module.Assignment;
 import seedu.address.model.person.Person;
 
 /**
@@ -148,4 +149,15 @@ public boolean equals(Object obj) {
                 && filteredPersons.equals(other.filteredPersons);
     }
 
+    //=========== Module List =============================================================
+
+    @Override
+    public boolean hasAssignment(Assignment assignment) {
+        return false;
+    }
+
+    @Override
+    public void addAssignment(Assignment assignment) {
+
+    }
 }

src/test/java/seedu/address/logic/commands/AddPersonCommandTest.java

@@ -20,6 +20,7 @@
 import seedu.address.model.Model;
 import seedu.address.model.ReadOnlyAddressBook;
 import seedu.address.model.ReadOnlyUserPrefs;
+import seedu.address.model.module.Assignment;
 import seedu.address.model.person.Person;
 import seedu.address.testutil.PersonBuilder;
 
@@ -148,6 +149,16 @@ public ObservableList<Person> getFilteredPersonList() {
         public void updateFilteredPersonList(Predicate<Person> predicate) {
             throw new AssertionError("This method should not be called.");
         }
+
+        @Override
+        public boolean hasAssignment(Assignment assignment) {
+            throw new AssertionError("This method should not be called.");
+        }
+
+        @Override
+        public void addAssignment(Assignment assignment) {
+            throw new AssertionError("This method should not be called.");
+        }
     }
 
     /**