Create new findPhone feature

src/main/java/seedu/address/logic/commands/FindPhoneCommand.java

@@ -0,0 +1,58 @@
+package seedu.address.logic.commands;
+
+import static java.util.Objects.requireNonNull;
+
+import seedu.address.commons.util.ToStringBuilder;
+import seedu.address.logic.Messages;
+import seedu.address.model.Model;
+import seedu.address.model.person.PhoneBeginsWithKeywordPredicate;
+
+/**
+ * Finds and lists all persons in address book whose phone number begins with the argument keywords.
+ * Keyword matching has to be all numbers.
+ */
+public class FindPhoneCommand extends Command {
+
+    public static final String COMMAND_WORD = "fp";
+
+    public static final String MESSAGE_USAGE = COMMAND_WORD + ": Finds all persons whose phone number begins with "
+            + "the specified keywords (integers only with no spacing) and displays them as a list with index numbers.\n"
+            + "Parameters: integers \n"
+            + "Example: " + COMMAND_WORD + " 91234567";
+
+    private final PhoneBeginsWithKeywordPredicate predicate;
+
+    public FindPhoneCommand(PhoneBeginsWithKeywordPredicate predicate) {
+        this.predicate = predicate;
+    }
+
+    @Override
+    public CommandResult execute(Model model) {
+        requireNonNull(model);
+        model.updateFilteredPersonList(predicate);
+        return new CommandResult(
+                String.format(Messages.MESSAGE_PERSONS_LISTED_OVERVIEW, model.getFilteredPersonList().size()));
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == this) {
+            return true;
+        }
+
+        // instanceof handles nulls
+        if (!(other instanceof FindPhoneCommand)) {
+            return false;
+        }
+
+        FindPhoneCommand otherFindCommand = (FindPhoneCommand) other;
+        return predicate.equals(otherFindCommand.predicate);
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .add("predicate", predicate)
+                .toString();
+    }
+}

src/main/java/seedu/address/logic/parser/ClientHubParser.java

@@ -15,6 +15,7 @@
 import seedu.address.logic.commands.EditCommand;
 import seedu.address.logic.commands.ExitCommand;
 import seedu.address.logic.commands.FindCommand;
+import seedu.address.logic.commands.FindPhoneCommand;
 import seedu.address.logic.commands.HelpCommand;
 import seedu.address.logic.commands.ListCommand;
 import seedu.address.logic.parser.exceptions.ParseException;
@@ -77,6 +78,9 @@ public Command parseCommand(String userInput) throws ParseException {
         case HelpCommand.COMMAND_WORD:
             return new HelpCommand();
 
+        case FindPhoneCommand.COMMAND_WORD:
+            return new FindPhoneCommandParser().parse(arguments);
+
         default:
             logger.finer("This user input caused a ParseException: " + userInput);
             throw new ParseException(MESSAGE_UNKNOWN_COMMAND);

src/main/java/seedu/address/logic/parser/FindPhoneCommandParser.java

@@ -0,0 +1,37 @@
+package seedu.address.logic.parser;
+
+import static seedu.address.logic.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
+
+import seedu.address.logic.commands.FindPhoneCommand;
+import seedu.address.logic.parser.exceptions.ParseException;
+import seedu.address.model.person.PhoneBeginsWithKeywordPredicate;
+
+/**
+ * Parses input arguments and creates a new FindPhoneCommand object
+ */
+public class FindPhoneCommandParser implements Parser<FindPhoneCommand> {
+
+    /**
+     * Parses the given {@code String} of arguments in the context of the FindCommand
+     * and returns a FindPhoneNumberCommand object for execution.
+     * @throws ParseException if the user input does not conform the expected format
+     */
+    public FindPhoneCommand parse(String args) throws ParseException {
+        String trimmedArgs = args.trim();
+
+        if (trimmedArgs.isEmpty() || !trimmedArgs.matches("\\d+")) {
+            throw new ParseException(
+                    String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+        }
+
+        String[] phoneNumber = trimmedArgs.split("\\s+");
+
+        if (phoneNumber.length != 1) {
+            throw new ParseException(
+                    String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+        }
+
+        return new FindPhoneCommand(new PhoneBeginsWithKeywordPredicate(phoneNumber[0]));
+    }
+
+}

src/main/java/seedu/address/model/person/PhoneBeginsWithKeywordPredicate.java

@@ -0,0 +1,44 @@
+package seedu.address.model.person;
+
+import java.util.function.Predicate;
+
+import seedu.address.commons.util.ToStringBuilder;
+
+/**
+ * Tests that a {@code Person}'s {@code Phone} matches any of the keywords given.
+ */
+public class PhoneBeginsWithKeywordPredicate implements Predicate<Person> {
+    private final String keyword;
+
+    public PhoneBeginsWithKeywordPredicate(String keyword) {
+        this.keyword = keyword;
+    }
+
+    @Override
+    public boolean test(Person person) {
+        if (keyword.isEmpty()) {
+            return false;
+        }
+        return person.getPhone().value.startsWith(keyword);
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == this) {
+            return true;
+        }
+
+        // instanceof handles nulls
+        if (!(other instanceof PhoneBeginsWithKeywordPredicate)) {
+            return false;
+        }
+
+        PhoneBeginsWithKeywordPredicate otherPhoneBeginsWithKeywordPredicate = (PhoneBeginsWithKeywordPredicate) other;
+        return keyword.equals(otherPhoneBeginsWithKeywordPredicate.keyword);
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this).add("keyword", keyword).toString();
+    }
+}

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

@@ -0,0 +1,91 @@
+package seedu.address.logic.commands;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static seedu.address.logic.Messages.MESSAGE_PERSONS_LISTED_OVERVIEW;
+import static seedu.address.logic.commands.CommandTestUtil.assertCommandSuccess;
+import static seedu.address.testutil.TypicalPersons.ELLE;
+import static seedu.address.testutil.TypicalPersons.FIONA;
+import static seedu.address.testutil.TypicalPersons.GEORGE;
+import static seedu.address.testutil.TypicalPersons.getTypicalClientHub;
+
+import java.util.Arrays;
+import java.util.Collections;
+
+import org.junit.jupiter.api.Test;
+
+import seedu.address.model.Model;
+import seedu.address.model.ModelManager;
+import seedu.address.model.UserPrefs;
+import seedu.address.model.person.PhoneBeginsWithKeywordPredicate;
+
+/**
+ * Contains integration tests (interaction with the Model) for {@code FindCommand}.
+ */
+public class FindPhoneCommandTest {
+    private Model model = new ModelManager(getTypicalClientHub(), new UserPrefs());
+    private Model expectedModel = new ModelManager(getTypicalClientHub(), new UserPrefs());
+
+    @Test
+    public void equals() {
+        PhoneBeginsWithKeywordPredicate firstPredicate =
+                new PhoneBeginsWithKeywordPredicate("9876");
+        PhoneBeginsWithKeywordPredicate secondPredicate =
+                new PhoneBeginsWithKeywordPredicate("9678");
+
+        FindPhoneCommand findPhoneFirstCommand = new FindPhoneCommand(firstPredicate);
+        FindPhoneCommand findPhoneSecondCommand = new FindPhoneCommand(secondPredicate);
+
+        // same object -> returns true
+        assertTrue(findPhoneFirstCommand.equals(findPhoneFirstCommand));
+
+        // same values -> returns true
+        FindPhoneCommand findPhoneFirstCommandCopy = new FindPhoneCommand(firstPredicate);
+        assertTrue(findPhoneFirstCommand.equals(findPhoneFirstCommandCopy));
+
+        // different types -> returns false
+        assertFalse(findPhoneFirstCommand.equals(1));
+
+        // null -> returns false
+        assertFalse(findPhoneFirstCommand.equals(null));
+
+        // different person -> returns false
+        assertFalse(findPhoneFirstCommand.equals(findPhoneSecondCommand));
+    }
+
+    @Test
+    public void execute_zeroKeywords_noPhoneFound() {
+        String expectedMessage = String.format(MESSAGE_PERSONS_LISTED_OVERVIEW, 0);
+        PhoneBeginsWithKeywordPredicate predicate = preparePredicate(" ");
+        FindPhoneCommand command = new FindPhoneCommand(predicate);
+        expectedModel.updateFilteredPersonList(predicate);
+        assertCommandSuccess(command, model, expectedMessage, expectedModel);
+        assertEquals(Collections.emptyList(), model.getFilteredPersonList());
+    }
+
+    @Test
+    public void execute_singleKeyword_multiplePersonsFound() {
+        String expectedMessage = String.format(MESSAGE_PERSONS_LISTED_OVERVIEW, 3);
+        PhoneBeginsWithKeywordPredicate predicate = preparePredicate("948");
+        FindPhoneCommand command = new FindPhoneCommand(predicate);
+        expectedModel.updateFilteredPersonList(predicate);
+        assertCommandSuccess(command, model, expectedMessage, expectedModel);
+        assertEquals(Arrays.asList(ELLE, FIONA, GEORGE), model.getFilteredPersonList());
+    }
+
+    @Test
+    public void toStringMethod() {
+        PhoneBeginsWithKeywordPredicate predicate = new PhoneBeginsWithKeywordPredicate("keyword");
+        FindPhoneCommand findPhoneCommand = new FindPhoneCommand(predicate);
+        String expected = FindPhoneCommand.class.getCanonicalName() + "{predicate=" + predicate + "}";
+        assertEquals(expected, findPhoneCommand.toString());
+    }
+
+    /**
+     * Parses {@code userInput} into a {@code NameContainsKeywordsPredicate}.
+     */
+    private PhoneBeginsWithKeywordPredicate preparePredicate(String userInput) {
+        return new PhoneBeginsWithKeywordPredicate(userInput);
+    }
+}

src/test/java/seedu/address/logic/parser/ClientHubParserTest.java

@@ -20,11 +20,13 @@
 import seedu.address.logic.commands.EditCommand.EditPersonDescriptor;
 import seedu.address.logic.commands.ExitCommand;
 import seedu.address.logic.commands.FindCommand;
+import seedu.address.logic.commands.FindPhoneCommand;
 import seedu.address.logic.commands.HelpCommand;
 import seedu.address.logic.commands.ListCommand;
 import seedu.address.logic.parser.exceptions.ParseException;
 import seedu.address.model.person.NameContainsKeywordsPredicate;
 import seedu.address.model.person.Person;
+import seedu.address.model.person.PhoneBeginsWithKeywordPredicate;
 import seedu.address.testutil.EditPersonDescriptorBuilder;
 import seedu.address.testutil.PersonBuilder;
 import seedu.address.testutil.PersonUtil;
@@ -88,6 +90,14 @@ public void parseCommand_list() throws Exception {
         assertTrue(parser.parseCommand(ListCommand.COMMAND_WORD + " 3") instanceof ListCommand);
     }
 
+    @Test
+    public void parseCommand_findPhone() throws Exception {
+        String keyword = "9876";
+        FindPhoneCommand command = (FindPhoneCommand) parser.parseCommand(
+                FindPhoneCommand.COMMAND_WORD + " " + keyword);
+        assertEquals(new FindPhoneCommand(new PhoneBeginsWithKeywordPredicate(keyword)), command);
+    }
+
     @Test
     public void parseCommand_unrecognisedInput_throwsParseException() {
         assertThrows(ParseException.class, String.format(MESSAGE_INVALID_COMMAND_FORMAT, HelpCommand.MESSAGE_USAGE), ()

src/test/java/seedu/address/logic/parser/FindPhoneCommandParserTest.java

@@ -0,0 +1,47 @@
+package seedu.address.logic.parser;
+
+import static seedu.address.logic.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
+import static seedu.address.logic.parser.CommandParserTestUtil.assertParseFailure;
+import static seedu.address.logic.parser.CommandParserTestUtil.assertParseSuccess;
+
+import org.junit.jupiter.api.Test;
+
+import seedu.address.logic.commands.FindPhoneCommand;
+import seedu.address.model.person.PhoneBeginsWithKeywordPredicate;
+
+public class FindPhoneCommandParserTest {
+
+    private FindPhoneCommandParser parser = new FindPhoneCommandParser();
+
+    @Test
+    public void parse_emptyArg_throwsParseException() {
+        assertParseFailure(parser, "     ",
+                String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+    }
+
+    @Test
+    public void parse_validArgs_returnsFindCommand() {
+        // no leading and trailing whitespaces
+        FindPhoneCommand expectedFindCommand =
+                new FindPhoneCommand(new PhoneBeginsWithKeywordPredicate("9876"));
+        assertParseSuccess(parser, "9876", expectedFindCommand);
+    }
+
+    @Test
+    public void parse_invalidArgs_throwsParseException() {
+        // multiple inputs
+        assertParseFailure(parser, "9876 9678",
+                String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+
+
+        // not number
+        assertParseFailure(parser, "string",
+                String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+
+
+        // non-number in betweennumber
+        assertParseFailure(parser, "987n9678",
+                String.format(MESSAGE_INVALID_COMMAND_FORMAT, FindPhoneCommand.MESSAGE_USAGE));
+    }
+
+}