diff --git a/README.md b/README.md
index 8715d4d915..afb375d36c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Duke project template
+# duke project template
This is a project template for a greenfield Java project. It's named after the Java mascot _Duke_. Given below are instructions on how to use it.
@@ -13,7 +13,7 @@ Prerequisites: JDK 11, update Intellij to the most recent version.
1. If there are any further prompts, accept the defaults.
1. Configure the project to use **JDK 11** (not other versions) as explained in [here](https://www.jetbrains.com/help/idea/sdk.html#set-up-jdk).
In the same dialog, set the **Project language level** field to the `SDK default` option.
-3. After that, locate the `src/main/java/Duke.java` file, right-click it, and choose `Run Duke.main()` (if the code editor is showing compile errors, try restarting the IDE). If the setup is correct, you should see something like the below as the output:
+3. After that, locate the `src/main/java/duke.java` file, right-click it, and choose `Run duke.main()` (if the code editor is showing compile errors, try restarting the IDE). If the setup is correct, you should see something like the below as the output:
```
Hello from
____ _
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000000..915b159781
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,61 @@
+plugins {
+ id 'java'
+ id 'application'
+ id 'com.github.johnrengelman.shadow' version '5.1.0'
+ id 'checkstyle'
+}
+
+repositories {
+ mavenCentral()
+}
+
+dependencies {
+ testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: '5.5.0'
+ testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.5.0'
+
+ String javaFxVersion = '11'
+
+ implementation group: 'org.openjfx', name: 'javafx-base', version: javaFxVersion, classifier: 'win'
+ implementation group: 'org.openjfx', name: 'javafx-base', version: javaFxVersion, classifier: 'mac'
+ implementation group: 'org.openjfx', name: 'javafx-base', version: javaFxVersion, classifier: 'linux'
+ implementation group: 'org.openjfx', name: 'javafx-controls', version: javaFxVersion, classifier: 'win'
+ implementation group: 'org.openjfx', name: 'javafx-controls', version: javaFxVersion, classifier: 'mac'
+ implementation group: 'org.openjfx', name: 'javafx-controls', version: javaFxVersion, classifier: 'linux'
+ implementation group: 'org.openjfx', name: 'javafx-fxml', version: javaFxVersion, classifier: 'win'
+ implementation group: 'org.openjfx', name: 'javafx-fxml', version: javaFxVersion, classifier: 'mac'
+ implementation group: 'org.openjfx', name: 'javafx-fxml', version: javaFxVersion, classifier: 'linux'
+ implementation group: 'org.openjfx', name: 'javafx-graphics', version: javaFxVersion, classifier: 'win'
+ implementation group: 'org.openjfx', name: 'javafx-graphics', version: javaFxVersion, classifier: 'mac'
+ implementation group: 'org.openjfx', name: 'javafx-graphics', version: javaFxVersion, classifier: 'linux'
+}
+
+test {
+ useJUnitPlatform()
+
+ testLogging {
+ events "passed", "skipped", "failed"
+
+ showExceptions true
+ exceptionFormat "full"
+ showCauses true
+ showStackTraces true
+ showStandardStreams = false
+ }
+}
+
+application {
+ mainClassName = "duke.main.Launcher"
+}
+
+checkstyle {
+ toolVersion = '10.2'
+}
+
+shadowJar {
+ archiveBaseName = "duke"
+ archiveClassifier = null
+}
+
+run{
+ standardInput = System.in
+}
diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
new file mode 100644
index 0000000000..e8ee76467b
--- /dev/null
+++ b/config/checkstyle/checkstyle.xml
@@ -0,0 +1,429 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/config/checkstyle/suppressions.xml b/config/checkstyle/suppressions.xml
new file mode 100644
index 0000000000..135ea49ee0
--- /dev/null
+++ b/config/checkstyle/suppressions.xml
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/docs/README.md b/docs/README.md
index 8077118ebe..fedaa4a335 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,29 +1,147 @@
-# User Guide
+# User Guide for DUKE
## Features
-### Feature-ABC
+### Display task list
-Description of the feature.
+View your task list
-### Feature-XYZ
+### Add Tasks
-Description of the feature.
+Add up to 3 types of tasks
+
+
+**[Todo]**
+
+A todo task denoted by [T]
+
+_Input format: **"todo"** + task description_
+
+
+**[Deadline]**
+
+A deadline task with a deadline to be done by, denoted by [D]
+
+_Input format: **"deadline"** + task description + **"/by"** + deadline_
+
+
+**[Event]**
+
+An event task with a time period for the event to be carried out, denoted by [E]
+
+_Input format: **"event"** + task description + **"/at"** + time period_
+
+
+### Mark / Unmark tasks as done
+
+Marks tasks as done with an "X"
+or undone without an "X"
+to keep track of completion progression
+
+
+### Undo
+
+Undoes the previous command
+
+
+### Exit
+
+Exits Duke
## Usage
-### `Keyword` - Describe action
+### list - Displays current task list
+
+Example of usage:
+> list
+
+Expected outcome:
+```
+[T][X] Read book
+[D][ ] Return Book (by: Monday 2pm)
+[E][ ] Meeting (at: Monday 2pm-4pm)
+```
+
+### todo - Adds todo task to task list
+
+Example of usage:
+> todo Read Book
+
+Expected outcome:
+```
+[T][ ] Read book
+```
+
+### deadline - Adds Deadline task to task list
+
+Example of usage:
+> deadline Return Book /by Monday 2pm
+
+Expected outcome:
+```
+[D][ ] Return Book (by: Monday 2pm)
+```
+
+### event - Adds Event task to task list
-Describe the action and its outcome.
+Example of usage:
+> event Meeting /at Monday 2pm-4pm
-Example of usage:
+Expected outcome:
+```
+[E][ ] Meeting (at: Monday 2pm-4pm)
+```
+
+### mark - Marks task as done
-`keyword (optional arguments)`
+Example of usage:
+> mark 1
Expected outcome:
+```
+[T][X] Read book
+```
-Description of the outcome.
+### unmark - Marks task as undone
+Example of usage:
+> unmark 1
+
+Expected outcome:
```
-expected output
+[T][ ] Read book
+```
+
+### undo - Undoes the previous command
+
+Example of usage:
+> undo
+
+Expected outcome:
+```
+[T][X] Read book
+[D][ ] Return Book (by: Monday 2pm)
+[E][ ] Meeting (at: Monday 2pm-4pm)
+
+unmark 1
+
+[T][ ] Read book
+[D][ ] Return Book (by: Monday 2pm)
+[E][ ] Meeting (at: Monday 2pm-4pm)
+
+undo
+
+[T][X] Read book
+[D][ ] Return Book (by: Monday 2pm)
+[E][ ] Meeting (at: Monday 2pm-4pm)
+```
+
+### bye - Exits Duke
+
+Example of usage:
+> bye
+
+Expected outcome:
```
+Bye. Hope to see you again soon!
+```
\ No newline at end of file
diff --git a/docs/Ui.png b/docs/Ui.png
new file mode 100644
index 0000000000..69ae6ad484
Binary files /dev/null and b/docs/Ui.png differ
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000..f3d88b1c2f
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000..b7c8c5dbf5
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000000..2fe81a7d95
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,183 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=`expr $i + 1`
+ done
+ case $i in
+ 0) set -- ;;
+ 1) set -- "$args0" ;;
+ 2) set -- "$args0" "$args1" ;;
+ 3) set -- "$args0" "$args1" "$args2" ;;
+ 4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000000..62bd9b9cce
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,103 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/src/main/data/prevTaskList.txt b/src/main/data/prevTaskList.txt
new file mode 100644
index 0000000000..f899b96796
--- /dev/null
+++ b/src/main/data/prevTaskList.txt
@@ -0,0 +1,3 @@
+
+T|1|read book
+D|0|return book| Monday 2pm
\ No newline at end of file
diff --git a/src/main/data/tasks.txt b/src/main/data/tasks.txt
new file mode 100644
index 0000000000..5ef4a47a9e
--- /dev/null
+++ b/src/main/data/tasks.txt
@@ -0,0 +1,3 @@
+
+T|0|read book
+D|0|return book| Monday 2pm
\ No newline at end of file
diff --git a/src/main/java/Duke.java b/src/main/java/Duke.java
deleted file mode 100644
index 5d313334cc..0000000000
--- a/src/main/java/Duke.java
+++ /dev/null
@@ -1,10 +0,0 @@
-public class Duke {
- public static void main(String[] args) {
- String logo = " ____ _ \n"
- + "| _ \\ _ _| | _____ \n"
- + "| | | | | | | |/ / _ \\\n"
- + "| |_| | |_| | < __/\n"
- + "|____/ \\__,_|_|\\_\\___|\n";
- System.out.println("Hello from\n" + logo);
- }
-}
diff --git a/src/main/java/duke/commands/AddDeadlineCommand.java b/src/main/java/duke/commands/AddDeadlineCommand.java
new file mode 100644
index 0000000000..a5482a1212
--- /dev/null
+++ b/src/main/java/duke/commands/AddDeadlineCommand.java
@@ -0,0 +1,72 @@
+package duke.commands;
+
+import java.time.LocalDateTime;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.Deadline;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * AddDeadlineCommand implements method for adding Deadline to task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class AddDeadlineCommand extends Command {
+
+ private final String input;
+
+ /**
+ * Creates new AddDeadlineCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public AddDeadlineCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! The description of a deadline cannot be empty.");
+ }
+ if (!input.contains("/by")) {
+ throw new DukeException(" ☹ OOPS!!! Please enter in the format : \n"
+ + " deadline {task description} /by {day / date : YYYY-MM-DD / time}");
+ }
+ this.input = input;
+ }
+
+ /**
+ * Adds a new Deadline task to the task list.
+ *
+ * @param taskList the destination task list for the deadline to be added
+ * @param ui the ui to display message after the task is added
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ String taskDesc = input.substring(9, input.indexOf('/') - 1);
+ StringBuilder date = new StringBuilder(input.substring(input.indexOf('/') + 3));
+ String[] dateArray = date.toString().split(" ");
+ if (isDate(dateArray[0])) {
+ LocalDateTime ld = LocalDateTime.parse(dateArray[0]);
+ date = new StringBuilder(ld.format(DTF) + " " + ld.getDayOfWeek());
+ for (int i = 1; i < dateArray.length; i++) {
+ date.append(" ").append(dateArray[i]);
+ }
+ }
+ Deadline deadline = new Deadline(taskDesc, date.toString());
+ taskList.addTask(deadline);
+ this.response = ui.addTaskMessage(deadline, taskList.getSize());
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/AddEventCommand.java b/src/main/java/duke/commands/AddEventCommand.java
new file mode 100644
index 0000000000..b27f04ab7d
--- /dev/null
+++ b/src/main/java/duke/commands/AddEventCommand.java
@@ -0,0 +1,72 @@
+package duke.commands;
+
+import java.time.LocalDateTime;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.Event;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * AddEventCommand implements method for adding Event to task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class AddEventCommand extends Command {
+
+ private final String input;
+
+ /**
+ * Creates new AddEventCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public AddEventCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! The description of a event cannot be empty.");
+ }
+ if (!input.contains("/at")) {
+ throw new DukeException(" ☹ OOPS!!! Please enter in the format : \n"
+ + " event {task description} /at {day / date : YYYY-MM-DD / time : no spaces}");
+ }
+ this.input = input;
+ }
+
+ /**
+ * Adds a new Event task to the task list.
+ *
+ * @param taskList the destination task list for the event to be added
+ * @param ui the ui to display message after the task is added
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ String taskDesc = input.substring(6, input.indexOf('/') - 1);
+ StringBuilder deadline = new StringBuilder(input.substring(input.indexOf('/') + 3));
+ String[] deadlineArray = deadline.toString().split(" ");
+ if (isDate(deadlineArray[0])) {
+ LocalDateTime ld = LocalDateTime.parse(deadlineArray[0]);
+ deadline = new StringBuilder(ld.format(DTF) + " " + ld.getDayOfWeek());
+ for (int i = 1; i < deadlineArray.length; i++) {
+ deadline.append(" ").append(deadlineArray[i]);
+ }
+ }
+ Event event = new Event(taskDesc, deadline.toString());
+ taskList.addTask(event);
+ this.response = ui.addTaskMessage(event, taskList.getSize());
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/AddTodoCommand.java b/src/main/java/duke/commands/AddTodoCommand.java
new file mode 100644
index 0000000000..7f6c728e80
--- /dev/null
+++ b/src/main/java/duke/commands/AddTodoCommand.java
@@ -0,0 +1,58 @@
+package duke.commands;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.tasks.Todo;
+import duke.ui.UI;
+
+/**
+ * AddTodoCommand implements method for adding Todo to task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class AddTodoCommand extends Command {
+
+ private final String input;
+
+ /**
+ * Creates new AddTodoCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public AddTodoCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! The description of a todo cannot be empty.");
+ }
+ this.input = input;
+ }
+
+ /**
+ * Adds a new Todo task to the task list.
+ *
+ * @param taskList the destination task list for the todo to be added
+ * @param ui the ui to display message after the task is added
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ // Index of beginning of Todo description after the "todo" keyword in command.
+ String taskDesc = input.substring(5);
+ Todo todo = new Todo(taskDesc);
+ taskList.addTask(todo);
+ this.response = ui.addTaskMessage(todo, taskList.getSize());
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/Command.java b/src/main/java/duke/commands/Command.java
new file mode 100644
index 0000000000..09f002b46d
--- /dev/null
+++ b/src/main/java/duke/commands/Command.java
@@ -0,0 +1,55 @@
+package duke.commands;
+
+import java.time.format.DateTimeFormatter;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * Abstract Command class implements methods for various commands recognised by Duke.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public abstract class Command {
+
+ // Formatter to standardize the display of dates
+ protected static final DateTimeFormatter DTF = DateTimeFormatter.ofPattern("MMM d yyyy");
+
+ public String response = "";
+
+ /**
+ * Executes the given command.
+ *
+ * @param tasks the TaskList to be operated on
+ * @param ui the ui to display messages
+ * @param storage the Storage to store changes to the TaskList
+ */
+ public abstract void execute(TaskList tasks, UI ui, Storage storage);
+
+ public abstract boolean isExit();
+
+ /**
+ * Checks if the input is a Date or a Day.
+ *
+ * @param input the input to be checked
+ *
+ * @return True if the input is a Date
+ */
+ public static boolean isDate(String input) {
+ return input.matches(".[0-9].*");
+ }
+
+ /**
+ * Checks that the input String is a valid command
+ *
+ * @param input the input String to be checked
+ *
+ * @return True if the input is valid
+ */
+ public static boolean checkValid(String input) {
+ String[] str = input.split(" ");
+ return ((str.length > 1) && ((!input.equals("list")) && (!input.equals("exit"))));
+ }
+}
diff --git a/src/main/java/duke/commands/DeleteAllCommand.java b/src/main/java/duke/commands/DeleteAllCommand.java
new file mode 100644
index 0000000000..4197469338
--- /dev/null
+++ b/src/main/java/duke/commands/DeleteAllCommand.java
@@ -0,0 +1,39 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * DeleteAllCommand implements method for clearing the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class DeleteAllCommand extends Command {
+
+ /**
+ * Clears out the entire task list.
+ *
+ * @param taskList the task list to be cleared
+ * @param ui the ui to display message after the task list has been cleared
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ taskList.deleteAll();
+ this.response = ui.deleteAllMessage();
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
+
diff --git a/src/main/java/duke/commands/DeleteTaskCommand.java b/src/main/java/duke/commands/DeleteTaskCommand.java
new file mode 100644
index 0000000000..a1548a13e2
--- /dev/null
+++ b/src/main/java/duke/commands/DeleteTaskCommand.java
@@ -0,0 +1,54 @@
+package duke.commands;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * DeleteTaskCommand implements method for deleting a task from the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class DeleteTaskCommand extends Command {
+
+ private final int taskId;
+
+ /**
+ * Creates new DeleteTaskCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public DeleteTaskCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! Please enter task to delete.");
+ }
+ this.taskId = Integer.parseInt(input.substring(7)) - 1;
+ }
+
+ /**
+ * Deletes a specific task in the task list.
+ *
+ * @param taskList the task list from which the task is to be deleted
+ * @param ui the ui to display message after the task is deleted
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ this.response = ui.deleteTaskMessage(taskList.getTask(taskId), taskList.getSize());
+ taskList.deleteTask(taskId);
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/ExitCommand.java b/src/main/java/duke/commands/ExitCommand.java
new file mode 100644
index 0000000000..184274bf83
--- /dev/null
+++ b/src/main/java/duke/commands/ExitCommand.java
@@ -0,0 +1,37 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * ExitCommand implements method for exiting Duke.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class ExitCommand extends Command {
+
+ /**
+ * Exits the program
+ *
+ * @param taskList placeholder to match parameters defined in parent abstract class Command
+ * @param ui the ui to display Goodbye message
+ * @param storage placeholder to match parameters defined in parent abstract class Command
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ this.response = ui.goodbyeMessage();
+ storage.store(taskList);
+ }
+
+ /**
+ * Terminates the program in Duke.run().
+ *
+ * @return True as this is the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return true;
+ }
+}
diff --git a/src/main/java/duke/commands/FindTaskCommand.java b/src/main/java/duke/commands/FindTaskCommand.java
new file mode 100644
index 0000000000..799b4dd315
--- /dev/null
+++ b/src/main/java/duke/commands/FindTaskCommand.java
@@ -0,0 +1,42 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * FindTaskCommand implements method for finding a task in the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class FindTaskCommand extends Command {
+
+ private final String keywords;
+
+ /**
+ * Creates new FindTaskCommand object.
+ *
+ * @param input the input string from the user
+ */
+ public FindTaskCommand(String input) {
+ this.keywords = input.substring(5);
+ }
+
+ /**
+ * Prints all the tasks in the task list that matches the keywords searched for by the user.
+ *
+ * @param tasks the TaskList to be search in
+ * @param ui the ui to display messages
+ * @param storage placeholder to match parameters defined in parent abstract class Command
+ */
+ @Override
+ public void execute(TaskList tasks, UI ui, Storage storage) {
+ this.response = ui.findMessage() + "\n" + tasks.findTask(this.keywords);
+ }
+
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/IncorrectCommand.java b/src/main/java/duke/commands/IncorrectCommand.java
new file mode 100644
index 0000000000..22cc4409d2
--- /dev/null
+++ b/src/main/java/duke/commands/IncorrectCommand.java
@@ -0,0 +1,36 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * IncorrectCommand implements method for unrecognised commands by Duke.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class IncorrectCommand extends Command {
+
+ /**
+ * Informs the user that the command is not recognised.
+ *
+ * @param tasks placeholder to match parameters defined in parent abstract class Command
+ * @param ui the ui to display incorrect command message
+ * @param storage placeholder to match parameters defined in parent abstract class Command
+ */
+ @Override
+ public void execute(TaskList tasks, UI ui, Storage storage) {
+ this.response = ui.incorrectCommandMessage();
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/MarkTaskCommand.java b/src/main/java/duke/commands/MarkTaskCommand.java
new file mode 100644
index 0000000000..310fd9f358
--- /dev/null
+++ b/src/main/java/duke/commands/MarkTaskCommand.java
@@ -0,0 +1,54 @@
+package duke.commands;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * MarkTaskCommand implements method for marking a task in the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class MarkTaskCommand extends Command {
+
+ private final int taskId;
+
+ /**
+ * Creates new MarkTaskCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public MarkTaskCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! Please enter task to unmark.");
+ }
+ this.taskId = Integer.parseInt(input.substring(5)) - 1;
+ }
+
+ /**
+ * Marks the specified task in the task list.
+ *
+ * @param taskList the task list which contains the task
+ * @param ui the ui to display message after the task is marked
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ taskList.markTask(this.taskId);
+ this.response = ui.markTaskMessage(taskList.getTask(this.taskId));
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/PrintListCommand.java b/src/main/java/duke/commands/PrintListCommand.java
new file mode 100644
index 0000000000..d76189cdd5
--- /dev/null
+++ b/src/main/java/duke/commands/PrintListCommand.java
@@ -0,0 +1,37 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * PrintListCommand implements method for printing out the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class PrintListCommand extends Command {
+
+ /**
+ * Prints out the current task list.
+ *
+ * @param taskList the task list to be printed
+ * @param ui the ui to display message after the task list is printed
+ * @param storage placeholder to match parameters defined in parent abstract class Command
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ this.response = taskList.printList() + "\n"
+ + ui.printListMessage(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/UndoCommand.java b/src/main/java/duke/commands/UndoCommand.java
new file mode 100644
index 0000000000..40a1a80bf7
--- /dev/null
+++ b/src/main/java/duke/commands/UndoCommand.java
@@ -0,0 +1,40 @@
+package duke.commands;
+
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * UndoCommand implements method for undoing the previous command.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class UndoCommand extends Command {
+
+ /**
+ * Undoes the previous command.
+ *
+ * @param taskList the task list
+ * @param ui the ui to display message after the command is undone
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ taskList.undo();
+ this.response = ui.undoMessage() + "\n" +
+ taskList.printList() + "\n" +
+ ui.printListMessage(taskList);
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/commands/UnmarkTaskCommand.java b/src/main/java/duke/commands/UnmarkTaskCommand.java
new file mode 100644
index 0000000000..e655a43447
--- /dev/null
+++ b/src/main/java/duke/commands/UnmarkTaskCommand.java
@@ -0,0 +1,53 @@
+package duke.commands;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+/**
+ * UnmarkTaskCommand implements method for unmarking a task in the task list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class UnmarkTaskCommand extends Command {
+
+ private final int taskId;
+
+ /**
+ * Creates new UnmarkTaskCommand object.
+ *
+ * @param input the input string from the user
+ * @throws DukeException to handle if the input string is invalid.
+ */
+ public UnmarkTaskCommand(String input) throws DukeException {
+ if (!checkValid(input)) {
+ throw new DukeException(" ☹ OOPS!!! Please enter task to unmark.");
+ }
+ this.taskId = Integer.parseInt(input.substring(7)) - 1;
+ }
+
+ /**
+ * Unmarks the specified task in the task list.
+ *
+ * @param taskList the task list which contains the task
+ * @param ui the ui to display message after the task is unmarked
+ * @param storage the storage to handle storing of the new task list
+ */
+ @Override
+ public void execute(TaskList taskList, UI ui, Storage storage) {
+ taskList.unmarkTask(this.taskId);
+ this.response = ui.unmarkTaskMessage(taskList.getTask(this.taskId));
+ storage.store(taskList);
+ }
+
+ /**
+ * Prevents the program from terminating in Duke.run().
+ *
+ * @return False as this is not the 'exit' command
+ */
+ @Override
+ public boolean isExit() {
+ return false;
+ }
+}
diff --git a/src/main/java/duke/exceptions/DukeException.java b/src/main/java/duke/exceptions/DukeException.java
new file mode 100644
index 0000000000..2011ed3d69
--- /dev/null
+++ b/src/main/java/duke/exceptions/DukeException.java
@@ -0,0 +1,19 @@
+package duke.exceptions;
+
+/**
+ * DukeException implements method for exceptions in Duke.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class DukeException extends Exception {
+
+ /**
+ * Creates a new DukeException object.
+ *
+ * @param message the error message to be displayed
+ */
+ public DukeException(String message) {
+ super(" " + message + "\n");
+ }
+}
diff --git a/src/main/java/duke/main/DialogBox.java b/src/main/java/duke/main/DialogBox.java
new file mode 100644
index 0000000000..d329372d42
--- /dev/null
+++ b/src/main/java/duke/main/DialogBox.java
@@ -0,0 +1,84 @@
+package duke.main;
+
+import java.io.IOException;
+import java.util.Collections;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.geometry.Pos;
+import javafx.scene.Node;
+import javafx.scene.control.Label;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.HBox;
+
+/**
+ * DialogBox implements method for dialog boxes in GUI.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class DialogBox extends HBox {
+ @FXML
+ private Label dialog;
+ @FXML
+ private ImageView displayPicture;
+
+ /**
+ * Constructs a new DialogBox object.
+ *
+ * @param text input from user / output from Duke
+ * @param img profile picture
+ */
+ private DialogBox(String text, Image img) {
+ try {
+ FXMLLoader fxmlLoader = new FXMLLoader(MainWindow.class.getResource("/view/DialogBox.fxml"));
+ fxmlLoader.setController(this);
+ fxmlLoader.setRoot(this);
+ fxmlLoader.load();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+
+ dialog.setText(text);
+ displayPicture.setImage(img);
+ }
+
+ /**
+ * Flips the dialog box such that the ImageView is on the left and text on the right.
+ */
+ private void flip() {
+ ObservableList tmp = FXCollections.observableArrayList(this.getChildren());
+ Collections.reverse(tmp);
+ getChildren().setAll(tmp);
+ setAlignment(Pos.TOP_LEFT);
+ }
+
+ /**
+ * Creates a new Dialog box with input and user's profile picture.
+ *
+ * @param text input from user
+ * @param img profile picture
+ *
+ * @return a new dialog box
+ */
+ public static DialogBox getUserDialog(String text, Image img) {
+ return new DialogBox(text, img);
+ }
+
+ /**
+ * Creates a new Dialog box with output and Duke's profile picture.
+ *
+ * @param text output from Duke
+ * @param img profile picture
+ *
+ * @return a new dialog box
+ */
+ public static DialogBox getDukeDialog(String text, Image img) {
+ var db = new DialogBox(text, img);
+ db.flip();
+ return db;
+ }
+}
diff --git a/src/main/java/duke/main/Duke.java b/src/main/java/duke/main/Duke.java
new file mode 100644
index 0000000000..c781746133
--- /dev/null
+++ b/src/main/java/duke/main/Duke.java
@@ -0,0 +1,65 @@
+package duke.main;
+
+import duke.commands.Command;
+import duke.exceptions.DukeException;
+import duke.parser.Parser;
+import duke.storage.Storage;
+import duke.tasks.TaskList;
+import duke.ui.UI;
+
+/**
+ * Duke implements the Duke bot, functions as a simple todo-list.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+
+public class Duke {
+
+ private final Storage storage;
+ private TaskList tasks;
+ private final UI ui;
+
+ /**
+ * Creates new Duke object.
+ *
+ * @param filePath the file path to store teh task list
+ */
+ public Duke(String filePath) {
+ ui = new UI();
+ storage = new Storage(filePath);
+ try {
+ tasks = new TaskList(storage.load());
+ } catch (DukeException e) {
+ System.out.println(e.getMessage());
+ tasks = new TaskList();
+ }
+ }
+
+ /**
+ * Returns the greeting message when Duke is opened
+ *
+ * @return Greeting message.
+ */
+ public String greeting() {
+ return ui.welcomeMessage();
+ }
+
+ /**
+ * Returns the response from Duke
+ *
+ * @param input input from the user
+ *
+ * @return the response from Duke
+ */
+ public String getResponse(String input) {
+ try {
+ Command c = Parser.parse(input);
+ c.execute(tasks, ui, storage);
+ return c.response;
+ } catch (DukeException e) {
+ return e.getMessage();
+ }
+ }
+
+}
diff --git a/src/main/java/duke/main/Launcher.java b/src/main/java/duke/main/Launcher.java
new file mode 100644
index 0000000000..6ace5a7ae2
--- /dev/null
+++ b/src/main/java/duke/main/Launcher.java
@@ -0,0 +1,15 @@
+package duke.main;
+
+import javafx.application.Application;
+
+/**
+ * A launcher class to workaround classpath issues.
+
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Launcher {
+ public static void main(String[] args) {
+ Application.launch(Main.class, args);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/duke/main/Main.java b/src/main/java/duke/main/Main.java
new file mode 100644
index 0000000000..229fa16468
--- /dev/null
+++ b/src/main/java/duke/main/Main.java
@@ -0,0 +1,40 @@
+package duke.main;
+
+import java.io.IOException;
+
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.layout.AnchorPane;
+import javafx.stage.Stage;
+
+/**
+ * A GUI for Duke using FXML.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Main extends Application {
+
+ private final Duke duke = new Duke("data/tasks.txt");
+
+ /**
+ * Runs the main logic of the window displayed by GUI.
+ *
+ * @param stage the stage provided during execution
+ */
+ @Override
+ public void start(Stage stage) {
+ try {
+ FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("/view/MainWindow.fxml"));
+ AnchorPane ap = fxmlLoader.load();
+ Scene scene = new Scene(ap);
+ stage.setScene(scene);
+ fxmlLoader.getController().setDuke(duke);
+ fxmlLoader.getController().greeting();
+ stage.show();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+}
diff --git a/src/main/java/duke/main/MainWindow.java b/src/main/java/duke/main/MainWindow.java
new file mode 100644
index 0000000000..93619d5637
--- /dev/null
+++ b/src/main/java/duke/main/MainWindow.java
@@ -0,0 +1,76 @@
+package duke.main;
+
+import javafx.animation.PauseTransition;
+import javafx.application.Platform;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.ScrollPane;
+import javafx.scene.control.TextField;
+import javafx.scene.image.Image;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.VBox;
+import javafx.util.Duration;
+
+import java.util.Objects;
+
+/**
+ * Controller for MainWindow. Provides the layout for the other controls.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class MainWindow extends AnchorPane {
+ @FXML
+ private ScrollPane scrollPane;
+ @FXML
+ private VBox dialogContainer;
+ @FXML
+ private TextField userInput;
+ @FXML
+ private Button sendButton;
+
+ private Duke duke;
+
+ private final Image userImage = new Image(Objects.requireNonNull(this.getClass().getResourceAsStream("/images/User.png")));
+ private final Image dukeImage = new Image(Objects.requireNonNull(this.getClass().getResourceAsStream("/images/Duke.png")));
+
+ @FXML
+ public void initialize() {
+ scrollPane.vvalueProperty().bind(dialogContainer.heightProperty());
+ }
+
+ public void setDuke(Duke d) {
+ duke = d;
+ }
+
+ @FXML
+ public void greeting() {
+ dialogContainer.getChildren().addAll(DialogBox.getDukeDialog(duke.greeting(), dukeImage));
+ }
+
+ /**
+ * Creates two dialog boxes, one echoing user input and the other containing Duke's reply and then appends them to
+ * the dialog container. Clears the user input after processing.
+ */
+ @FXML
+ private void handleUserInput() {
+ String input = userInput.getText();
+ String response = duke.getResponse(input);
+ dialogContainer.getChildren().addAll(DialogBox.getUserDialog(input, userImage));
+ if (input.equals("bye")) {
+ PauseTransition delay = new PauseTransition(Duration.seconds(1.0));
+ delay.setOnFinished(scene -> {
+ Platform.exit();
+ System.exit(0);
+ });
+ delay.play();
+ userInput.setDisable(true);
+ sendButton.setDisable(true);
+ dialogContainer.getChildren().add(DialogBox.getDukeDialog(response, dukeImage));
+ } else {
+ dialogContainer.getChildren().add(DialogBox.getDukeDialog(response, dukeImage));
+ }
+
+ userInput.clear();
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/duke/parser/Parser.java b/src/main/java/duke/parser/Parser.java
new file mode 100644
index 0000000000..c145fd6d25
--- /dev/null
+++ b/src/main/java/duke/parser/Parser.java
@@ -0,0 +1,84 @@
+package duke.parser;
+
+import duke.commands.*;
+import duke.exceptions.DukeException;
+
+/**
+ * AddDeadlineCommand implements method for parsing inputs by the user.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Parser {
+
+ /**
+ * Parses the input and directs Duke to execute the appropriate command.
+ *
+ * @param input input String from the user
+ *
+ * @return Command to be executed in Duke.run()
+ *
+ * @throws DukeException to handle inappropriate inputs
+ */
+ public static Command parse(String input) throws DukeException {
+ //Fetch and display taskList
+ if (input.equals("list")) {
+ return new PrintListCommand();
+ }
+
+ // Mark a task
+ if (input.startsWith("mark")) {
+ return new MarkTaskCommand(input);
+ }
+
+ // Unmark a task
+ if (input.startsWith("unmark")) {
+ return new UnmarkTaskCommand(input);
+ }
+
+ // Deletes all tasks from the list
+ if (input.equals("delete all")) {
+ return new DeleteAllCommand();
+ }
+
+ // Delete a task
+ if (input.startsWith("delete")) {
+ return new DeleteTaskCommand(input);
+ }
+
+ // Add todo to taskList
+ if (input.startsWith("todo")) {
+ return new AddTodoCommand(input);
+ }
+
+ // Add deadline to taskList
+ if (input.startsWith("deadline")) {
+ return new AddDeadlineCommand(input);
+ }
+
+ // Add event to taskList
+ if (input.startsWith("event")) {
+ return new AddEventCommand(input);
+ }
+
+ // Finds the tasks matching the given keywords
+ if (input.startsWith("find")) {
+ return new FindTaskCommand(input);
+ }
+
+ // Undoes the previous command
+ if (input.startsWith("undo")) {
+ return new UndoCommand();
+ }
+
+ // Exits program
+ if (input.startsWith("bye")) {
+ return new ExitCommand();
+ }
+
+ // In case of an unrecognised command
+ return new IncorrectCommand();
+ }
+}
+
+
diff --git a/src/main/java/duke/storage/Storage.java b/src/main/java/duke/storage/Storage.java
new file mode 100644
index 0000000000..e6113971c0
--- /dev/null
+++ b/src/main/java/duke/storage/Storage.java
@@ -0,0 +1,110 @@
+package duke.storage;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+
+import duke.tasks.Task;
+import duke.tasks.TaskList;
+
+/**
+ * Storage implements method for storing and fetching the task list from hard drive.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Storage {
+
+ /** Default file path used if the user does not provide the file name. */
+ private static final String PATH = Paths.get(".").toAbsolutePath().toString();
+ private static final String RELATIVE_FILEPATH = PATH.substring(0, PATH.length() - 1) + "src/main/";
+
+ private String filePath = "";
+
+ /**
+ * Saves file to a default path if one was not provided by the user.
+ */
+ public Storage() {
+ this.filePath = RELATIVE_FILEPATH + "data/tasks.txt";
+ }
+
+ /**
+ * Saves the file to the file path specified by the user.
+ *
+ * @param filePath path for the file to be stored
+ */
+ @SuppressWarnings("ResultOfMethodCallIgnored")
+ public Storage(String filePath) {
+ try {
+ this.filePath = RELATIVE_FILEPATH + filePath;
+ File file = new File(this.filePath);
+ file.createNewFile();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * Stores the given task list to the given path.
+ *
+ * @param toStore the task list to be stored
+ */
+ public void store(TaskList toStore) {
+ try {
+ BufferedWriter writer = new BufferedWriter(new FileWriter(this.filePath));
+ List encodedTaskList = TaskListEncoder.encodeTaskList(toStore);
+ for (String task : encodedTaskList) {
+ writer.write("\n" + task);
+ }
+ writer.close();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * Stores the given task list (as ArrayList) to the given path.
+ *
+ * @param toStore the task list to be stored
+ */
+ public void store(ArrayList toStore) {
+ try {
+ BufferedWriter writer = new BufferedWriter(new FileWriter(this.filePath));
+ List encodedTaskList = TaskListEncoder.encodeTaskList(toStore);
+ for (String task : encodedTaskList) {
+ writer.write("\n" + task);
+ }
+ writer.close();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * Loads the stored task list from the specified file path.
+ *
+ * @return an ArrayList to be passed as parameters for the TaskList constructor
+ */
+ public ArrayList load() {
+ ArrayList result = new ArrayList<>();
+ try {
+ BufferedReader reader = new BufferedReader(new FileReader(this.filePath));
+ List encodedTaskList = new ArrayList<>();
+ String line;
+ while ((line = reader.readLine()) != null) {
+ encodedTaskList.add(line);
+ }
+ reader.close();
+ result = TaskListDecoder.decodeTaskList(encodedTaskList);
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ return result;
+ }
+}
diff --git a/src/main/java/duke/storage/TaskListDecoder.java b/src/main/java/duke/storage/TaskListDecoder.java
new file mode 100644
index 0000000000..16a570054e
--- /dev/null
+++ b/src/main/java/duke/storage/TaskListDecoder.java
@@ -0,0 +1,78 @@
+package duke.storage;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import duke.exceptions.DukeException;
+import duke.tasks.Deadline;
+import duke.tasks.Event;
+import duke.tasks.Task;
+import duke.tasks.Todo;
+
+/**
+ * Decodes the storage data file into a {@code TaskList} object.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class TaskListDecoder {
+
+ /**
+ * Decodes a List into a TaskList containing the decoded tasks.
+ *
+ * @param encodedTaskList the task list to be decoded
+ *
+ * @return the decoded task list
+ */
+ public static ArrayList decodeTaskList(List encodedTaskList) {
+ ArrayList decodedTaskList = new ArrayList<>();
+ for (String encodedTask : encodedTaskList) {
+ decodedTaskList.add(decodeTaskFromString(encodedTask));
+ }
+ decodedTaskList.remove(null);
+ return decodedTaskList;
+ }
+
+ /**
+ * Decodes the given String into a task.
+ *
+ * @param encodedTask the String to be decoded
+ *
+ * @return the task represented by the encoded String
+ */
+ public static Task decodeTaskFromString(String encodedTask) {
+ Task result = null;
+ String[] str = encodedTask.split("\\|");
+ switch (str[0]) {
+ case "T":
+ Todo todo = new Todo(str[2]);
+ if (Objects.equals(str[1], "1")) {
+ todo.mark();
+ }
+ result = todo;
+ break;
+ case "D":
+ Deadline deadline = new Deadline(str[2], str[3]);
+ if (Objects.equals(str[1], "1")) {
+ deadline.mark();
+ }
+ result = deadline;
+ break;
+ case "E":
+ Event event = new Event(str[2], str[3]);
+ if (Objects.equals(str[1], "1")) {
+ event.mark();
+ }
+ result = event;
+ break;
+ default:
+ try {
+ throw new DukeException(" OOPS!!! Unrecognised task");
+ } catch (DukeException e) {
+ System.out.println(e.getMessage());
+ }
+ }
+ return result;
+ }
+}
diff --git a/src/main/java/duke/storage/TaskListEncoder.java b/src/main/java/duke/storage/TaskListEncoder.java
new file mode 100644
index 0000000000..5aa2e15780
--- /dev/null
+++ b/src/main/java/duke/storage/TaskListEncoder.java
@@ -0,0 +1,59 @@
+package duke.storage;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import duke.tasks.Task;
+import duke.tasks.TaskList;
+
+/**
+ * Encode the {@code TaskList} object into a data file for storage.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class TaskListEncoder {
+
+ /**
+ * Encodes a task list into a List containing the decoded tasks.
+ *
+ * @param toEncode the task list to be encoded
+ *
+ * @return the encoded task list
+ */
+ public static List encodeTaskList(TaskList toEncode) {
+ final List encodedTaskList = new ArrayList<>();
+ for (Task task : toEncode.getAllTasks()) {
+ encodedTaskList.add(encodeTaskToString(task));
+ }
+ return encodedTaskList;
+ }
+
+ /**
+ * Encodes a ArrayList into a List containing the decoded tasks.
+ *
+ * @param toEncode the task list to be encoded
+ *
+ * @return the encoded task list
+ */
+ public static List encodeTaskList(ArrayList toEncode) {
+ final List encodedTaskList = new ArrayList<>();
+ for (Task task : toEncode) {
+ encodedTaskList.add(encodeTaskToString(task));
+ }
+ return encodedTaskList;
+ }
+
+ /**
+ * Encodes the given task into a template format to be stored.
+ *
+ * @param task the task to be encoded
+ *
+ * @return a String representing the encoded task
+ */
+ public static String encodeTaskToString(Task task) {
+ return task.getTaskType() + "|"
+ + (task.isisCompleted() ? 1 : 0) + "|"
+ + task.getDesc();
+ }
+}
diff --git a/src/main/java/duke/tasks/Deadline.java b/src/main/java/duke/tasks/Deadline.java
new file mode 100644
index 0000000000..5d02e4624e
--- /dev/null
+++ b/src/main/java/duke/tasks/Deadline.java
@@ -0,0 +1,49 @@
+package duke.tasks;
+
+/**
+ * Deadline implements methods for Deadline objects.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Deadline extends Task {
+
+ private final String date;
+ private final String taskDesc;
+
+ /**
+ * Creates a new Deadline object.
+ *
+ * @param taskDesc description of the deadline task
+ * @param date deadline of the deadline task
+ */
+ public Deadline(String taskDesc, String date) {
+ super(taskDesc);
+ this.taskDesc = taskDesc;
+ this.date = date;
+ }
+
+ /**
+ * Fetches the type of task for identification during encoding and decoding for storage.
+ *
+ * @return a Character 'D' representing Deadline
+ */
+ @Override
+ public char getTaskType() {
+ return 'D';
+ }
+
+ /**
+ * Fetches the description of the task.
+ *
+ * @return the description of the task
+ */
+ @Override
+ public String getDesc() {
+ return this.taskDesc + "|" + this.date;
+ }
+
+ public String toString() {
+ return "[D]" + super.toString() + " (by: " + date + ")";
+ }
+}
diff --git a/src/main/java/duke/tasks/Event.java b/src/main/java/duke/tasks/Event.java
new file mode 100644
index 0000000000..91fb963f33
--- /dev/null
+++ b/src/main/java/duke/tasks/Event.java
@@ -0,0 +1,49 @@
+package duke.tasks;
+
+/**
+ * Event implements methods for Event objects.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Event extends Task {
+
+ private final String deadline;
+ private final String taskDesc;
+
+ /**
+ * Creates a new Event object.
+ *
+ * @param taskDesc description of the event task
+ * @param date deadline of the event task
+ */
+ public Event(String taskDesc, String deadline) {
+ super(taskDesc);
+ this.taskDesc = taskDesc;
+ this.deadline = deadline;
+ }
+
+ /**
+ * Fetches the type of task for identification during encoding and decoding for storage.
+ *
+ * @return a Character 'E' representing Event
+ */
+ @Override
+ public char getTaskType() {
+ return 'E';
+ }
+
+ /**
+ * Fetches the description of the task.
+ *
+ * @return the description of the task
+ */
+ @Override
+ public String getDesc() {
+ return this.taskDesc + "|" + this.deadline;
+ }
+
+ public String toString() {
+ return "[E]" + super.toString() + " (at: " + deadline + ")";
+ }
+}
diff --git a/src/main/java/duke/tasks/Task.java b/src/main/java/duke/tasks/Task.java
new file mode 100644
index 0000000000..044190a6ac
--- /dev/null
+++ b/src/main/java/duke/tasks/Task.java
@@ -0,0 +1,70 @@
+package duke.tasks;
+
+/**
+ * Event implements methods for Task objects.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public abstract class Task {
+
+ private final String taskDesc;
+ private boolean isCompleted;
+
+ /**
+ * Creates a new Task object.
+ *
+ * @param taskDesc description of the task
+ */
+ public Task(String taskDesc) {
+ this.taskDesc = taskDesc;
+ this.isCompleted = false;
+ }
+
+ /**
+ * Fetches the description of the task.
+ *
+ * @return the description of the task
+ */
+ public String getDesc() {
+ return this.taskDesc;
+ }
+
+ /**
+ * Checks if the task has been marked as completed.
+ *
+ * @return True if the task is completed
+ */
+ public boolean isisCompleted() {
+ return this.isCompleted;
+ }
+
+ /**
+ * Fetches the type of task for identification during encoding and decoding for storage.
+ *
+ * @return a Character representing the type of task
+ */
+ public abstract char getTaskType();
+
+ /**
+ * Marks the task as done.
+ */
+ public void mark() {
+ this.isCompleted = true;
+ }
+
+ /**
+ * Marks the task as not done.
+ */
+ public void unmark() {
+ this.isCompleted = false;
+ }
+
+ public String toString() {
+ if (isCompleted) {
+ return "[X] " + taskDesc;
+ } else {
+ return "[ ] " + taskDesc;
+ }
+ }
+}
diff --git a/src/main/java/duke/tasks/TaskList.java b/src/main/java/duke/tasks/TaskList.java
new file mode 100644
index 0000000000..61b65d903e
--- /dev/null
+++ b/src/main/java/duke/tasks/TaskList.java
@@ -0,0 +1,182 @@
+package duke.tasks;
+
+import java.util.ArrayList;
+
+import duke.exceptions.DukeException;
+import duke.storage.Storage;
+
+/**
+ * TaskList implements methods for TaskList objects.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class TaskList {
+
+ private static ArrayList taskList;
+ private final Storage prevStorage = new Storage("data/prevTaskList.txt");
+
+ /**
+ * Constructs new TaskList using the given ArrayList.
+ *
+ * @param taskArrayList the ArrayList to construct the TaskList from
+ *
+ * @throws DukeException to handle if the given ArrayList is empty or invalid
+ */
+ public TaskList(ArrayList taskArrayList) throws DukeException {
+ taskList = taskArrayList;
+ }
+
+ /**
+ * Constructs an empty TaskList if no ArrayList is given.
+ */
+ public TaskList() {
+ taskList = new ArrayList<>();
+ }
+
+ /**
+ * Checks if the task list is empty.
+ *
+ * @return true if the task list is empty
+ */
+ public boolean isEmpty() {
+ return taskList.size() == 0;
+ }
+
+ /**
+ * Fetches the current number of tasks.
+ *
+ * @return an Integer representing the current number of tasks
+ */
+ public int getSize() {
+ return taskList.size();
+ }
+
+ /**
+ * Prints out the current task list.
+ */
+ public String printList() {
+ StringBuilder res = new StringBuilder();
+ try {
+ if (isEmpty()) {
+ throw new DukeException(" ☹ OOPS!!! Seems like your list is empty.");
+ } else {
+ for (int i = 0; i < taskList.size(); i++) {
+ res.append(" ").append(i + 1).append(". ")
+ .append(taskList.get(i).toString())
+ .append("\n");
+ }
+ }
+ } catch (DukeException e) {
+ System.out.println(e.getMessage());
+ }
+ return res.toString();
+ }
+
+ /**
+ * Prints out list of tasks that contains the keyword searched for by the user
+ *
+ * @param input the keyword to be searched for by the user
+ */
+ public String findTask(String input) {
+ boolean noMatches = true;
+ ArrayList res = new ArrayList<>();
+ for (int i = 0; i < taskList.size(); i++) {
+ Task task = taskList.get(i);
+ if (task.getDesc().contains(input)) {
+ noMatches = false;
+ res.add( " " + (i + 1) + ". " + task);
+ }
+ }
+ if (noMatches) {
+ try {
+ throw new DukeException(" ☹ OOPS!!! Seems like there are no tasks matching this description.");
+ } catch (DukeException e) {
+ System.out.println(e.getMessage());
+ }
+ }
+ return res.toString();
+ }
+
+ /**
+ * Marks the task at the given index as done.
+ *
+ * @param taskIndex the index of the task to be marked
+ */
+ public void markTask(int taskIndex) {
+ saveTaskList();
+ taskList.get(taskIndex).mark();
+ }
+
+ /**
+ * Marks the task at the given index as not done.
+ *
+ * @param taskIndex the index of the task to be marked
+ */
+ public void unmarkTask(int taskIndex) {
+ saveTaskList();
+ taskList.get(taskIndex).unmark();
+ }
+
+ /**
+ * Adds given task to the task list.
+ *
+ * @param task the task to be added
+ */
+ public void addTask(Task task) {
+ saveTaskList();
+ taskList.add(task);
+ }
+
+ /**
+ * Deletes the task at the given index from the list.
+ *
+ * @param index index of the task to be deleted
+ */
+ public void deleteTask(int index) {
+ saveTaskList();
+ taskList.remove(index);
+ }
+
+ /**
+ * Fetches the task at the given index of the list.
+ *
+ * @param taskId index of the task to be fetched
+ *
+ * @return the task at the given index
+ */
+ public Task getTask(int taskId) {
+ return taskList.get(taskId);
+ }
+
+ /**
+ * Clears out the task list.
+ */
+ public void deleteAll() {
+ saveTaskList();
+ taskList = new ArrayList<>();
+ }
+
+ /**
+ * Fetches all the tasks in the task list.
+ *
+ * @return an ArrayList containing all the tasks in the task list
+ */
+ public ArrayList getAllTasks() {
+ return taskList;
+ }
+
+ /**
+ * Saves the taskList into src/main/data/prevTaskList.txt.
+ */
+ public void saveTaskList() {
+ prevStorage.store(taskList);
+ }
+
+ /**
+ * Updates the taskList as the previously saved taskList.
+ */
+ public void undo() {
+ taskList = prevStorage.load();
+ }
+}
diff --git a/src/main/java/duke/tasks/Todo.java b/src/main/java/duke/tasks/Todo.java
new file mode 100644
index 0000000000..4627c074ee
--- /dev/null
+++ b/src/main/java/duke/tasks/Todo.java
@@ -0,0 +1,33 @@
+package duke.tasks;
+
+/**
+ * Todo implements methods for Todo objects.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class Todo extends Task {
+
+ /**
+ * Creates a new Todo object.
+ *
+ * @param task description of the deadline task
+ */
+ public Todo(String task) {
+ super(task);
+ }
+
+ /**
+ * Fetches the type of task for identification during encoding and decoding for storage.
+ *
+ * @return a Character 'T' representing Todo
+ */
+ @Override
+ public char getTaskType() {
+ return 'T';
+ }
+
+ public String toString() {
+ return "[T]" + super.toString();
+ }
+}
diff --git a/src/main/java/duke/ui/UI.java b/src/main/java/duke/ui/UI.java
new file mode 100644
index 0000000000..17731ec6f3
--- /dev/null
+++ b/src/main/java/duke/ui/UI.java
@@ -0,0 +1,70 @@
+package duke.ui;
+
+import duke.tasks.Task;
+import duke.tasks.TaskList;
+
+/**
+ * Event implements methods for displaying messages in Duke.
+ *
+ * @author Isaac Li Haoyang
+ * @version v0.2
+ */
+public class UI {
+
+ public String welcomeMessage() {
+ return " Hello! I'm Duke\n What can I do for you?";
+ }
+
+ public String goodbyeMessage() {
+ return " Bye. Hope to see you again soon!";
+ }
+
+ public boolean checkValid(String input) {
+ String[] str = input.split(" ");
+ return (str.length > 1);
+ }
+
+ public String printListMessage(TaskList taskList) {
+ return " " + " You have " + taskList.getSize() + " tasks in the list.";
+ }
+
+ public String findMessage() {
+ return " Here are the matching tasks in your list: ";
+ }
+
+ public String addTaskMessage(Task task, int listSize) {
+ return " " + " Got it. I've added this task: \n" +
+ " " + task + "\n" +
+ " " + " Now you have " + listSize + " tasks in the list.";
+ }
+
+ public String deleteTaskMessage(Task task, int listSize) {
+ return " " + " Got it. I've removed this task: \n" +
+ " " + task + "\n" +
+ " " + " Now you have " + listSize + " tasks in the list.";
+ }
+
+ public String deleteAllMessage() {
+ return " " + " Got it. I've removed all tasks\n" +
+ " " + " Now you have 0 tasks in the list.";
+ }
+
+ public String markTaskMessage(Task task) {
+ return " Nice! I've marked this task as done:\n" +
+ " " + task;
+ }
+
+ public String unmarkTaskMessage(Task task) {
+ return " OK, I've marked this task as not done yet:\n" +
+ " " + task;
+ }
+
+ public String incorrectCommandMessage() {
+ return " ☹ OOPS!!! I'm sorry, but I don't know what that means :-(.";
+ }
+
+ public String undoMessage() {
+ return " OK, I've undone the previous command.\n" +
+ " Here is your task list:";
+ }
+}
diff --git a/src/main/resources/images/Duke.png b/src/main/resources/images/Duke.png
new file mode 100644
index 0000000000..3941155449
Binary files /dev/null and b/src/main/resources/images/Duke.png differ
diff --git a/src/main/resources/images/User.png b/src/main/resources/images/User.png
new file mode 100644
index 0000000000..bd2f69d3d3
Binary files /dev/null and b/src/main/resources/images/User.png differ
diff --git a/src/main/resources/view/DialogBox.fxml b/src/main/resources/view/DialogBox.fxml
new file mode 100644
index 0000000000..6a4f69e65f
--- /dev/null
+++ b/src/main/resources/view/DialogBox.fxml
@@ -0,0 +1,15 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/main/resources/view/MainWindow.fxml b/src/main/resources/view/MainWindow.fxml
new file mode 100644
index 0000000000..9323e6b51e
--- /dev/null
+++ b/src/main/resources/view/MainWindow.fxml
@@ -0,0 +1,19 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/test/java/test/CheckValidInputTest.java b/src/test/java/test/CheckValidInputTest.java
new file mode 100644
index 0000000000..dec09e0db0
--- /dev/null
+++ b/src/test/java/test/CheckValidInputTest.java
@@ -0,0 +1,20 @@
+package test;
+
+import org.junit.jupiter.api.Test;
+
+import duke.ui.UI;
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class CheckValidInputTest {
+
+ @Test
+ void shouldCheckValidInput() {
+ UI ui = new UI();
+ assertAll(() -> assertFalse(ui.checkValid(" ")),
+ () -> assertFalse(ui.checkValid("deadline")),
+ () -> assertTrue(ui.checkValid("mark 1")),
+ () -> assertTrue(ui.checkValid("deadline read book /by Monday")));
+ }
+}
diff --git a/src/test/java/test/GetTaskTypeTest.java b/src/test/java/test/GetTaskTypeTest.java
new file mode 100644
index 0000000000..d6e4cc6d55
--- /dev/null
+++ b/src/test/java/test/GetTaskTypeTest.java
@@ -0,0 +1,30 @@
+package test;
+
+import org.junit.jupiter.api.Test;
+
+import duke.tasks.Deadline;
+import duke.tasks.Event;
+import duke.tasks.Todo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+
+public class GetTaskTypeTest {
+
+ @Test
+ void todoShouldReturnT() {
+ Todo todo = new Todo("dummy task");
+ assertEquals('T', todo.getTaskType());
+ }
+
+ @Test
+ void deadlineShouldReturnT() {
+ Deadline deadline = new Deadline("dummy task", "Monday");
+ assertEquals('D', deadline.getTaskType());
+ }
+
+ @Test
+ void eventShouldReturnT() {
+ Event event = new Event("dummy task", "Monday 2-4pm");
+ assertEquals('E', event.getTaskType());
+ }
+}
diff --git a/src/test/java/test/ParseMarkTaskCommandTest.java b/src/test/java/test/ParseMarkTaskCommandTest.java
new file mode 100644
index 0000000000..1433a2ed7a
--- /dev/null
+++ b/src/test/java/test/ParseMarkTaskCommandTest.java
@@ -0,0 +1,17 @@
+package test;
+
+import org.junit.jupiter.api.Test;
+
+import duke.commands.Command;
+import duke.exceptions.DukeException;
+import duke.parser.Parser;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+public class ParseMarkTaskCommandTest {
+
+ @Test
+ void shouldParseMarkTask() throws DukeException {
+ Command c = Parser.parse("mark 1");
+ assertFalse(c.isExit());
+ }
+}
diff --git a/text-ui-test/runtest.bat b/text-ui-test/runtest.bat
index 0873744649..b024e711d1 100644
--- a/text-ui-test/runtest.bat
+++ b/text-ui-test/runtest.bat
@@ -15,7 +15,7 @@ IF ERRORLEVEL 1 (
REM no error here, errorlevel == 0
REM run the program, feed commands from input.txt file and redirect the output to the ACTUAL.TXT
-java -classpath ..\bin Duke < input.txt > ACTUAL.TXT
+java -classpath ..\bin duke < input.txt > ACTUAL.TXT
REM compare the output to the expected output
FC ACTUAL.TXT EXPECTED.TXT
diff --git a/text-ui-test/runtest.sh b/text-ui-test/runtest.sh
old mode 100644
new mode 100755