diff --git a/README.md b/README.md
index 8715d4d915..00e4b38243 100644
--- a/README.md
+++ b/README.md
@@ -1,24 +1,71 @@
-# 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.
-
-## Setting up in Intellij
-
-Prerequisites: JDK 11, update Intellij to the most recent version.
-
-1. Open Intellij (if you are not in the welcome screen, click `File` > `Close Project` to close the existing project first)
-1. Open the project into Intellij as follows:
- 1. Click `Open`.
- 1. Select the project directory, and click `OK`.
- 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:
- ```
- Hello from
- ____ _
- | _ \ _ _| | _____
- | | | | | | | |/ / _ \
- | |_| | |_| | < __/
- |____/ \__,_|_|\_\___|
- ```
+# Chad Personal Assistant User Guide
+
+## Features
+
+- Maintain a list of Tasks, Deadlines and Events.
+- View your list at any time with a simple command `list`.
+- Mark each item as Done or Not Done.
+- Delete obsolete tasks.
+
+## Quick Start Guide
+1. Download the latest Chad version from [here](https://github.com/fahim-tazz/ip/releases).
+2. Open your Terminal/Command Prompt.
+3. Type `cd Downloads` (or wherever the `chad.jar` file is stored).
+4. Type in `java -jar chad.jar`.
+5. Type in commands to use Chad.
+6. Enjoy!
+
+---
+
+## Usage
+
+### `list` - List all current tasks.
+
+Lists down all current tasks saved by Chad.
+- T, D and E represent Todo, Deadline and Event tasks respectively.
+- `[ ]` and `[X]` show whether a task is `Not Done` or `Done`, respectively.
+
+
+### `todo [task name]` - Add a new Todo item.
+
+Adds a new Todo task to your list.
+
+### `deadline [task name] /by [due date YYYY-MM-DD]` - Add a new Deadline item.
+
+Adds a new Deadline task to your list.
+- The name should be followed by a ` /by ` keyword.
+- The due date should come after the ` by `, and be in the format `YYYY-MM-DD`.
+
+### `event [event name] /from [start time] /to [end time]` - Add a new Event item.
+
+Adds a new Event to your list.
+- The name should be followed by a ` /from ` keyword.
+- The start time should come after the ` /from ` keyword, followed by ` /to `.
+- The end time should come after the ` /to ` keyoword.
+- Start and End times do not have any format constraints.
+
+### `mark [task no.]` - Marks a task as done.
+
+Marks the task at that serial number as done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+
+### `unmark [task no.]` - Marks a task as NOT done.
+
+Marks the task at that serial number as NOT done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+
+### `delete [task no.]` - Removes a task from the list.
+
+Permanently deletes the task at that serial number from the list.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+- Deleted tasks CANNOT be recovered.
+
+### `find [search phrase]` - Finds any task that matches with the search phrase.
+
+Searches for any task that contains the search phrase.
+- Search is CASE-SENSITIVE. `laundry` will NOT match with a task named `Do Laundry`.
+
+### `bye` - Saves the current tasks and exits Chad.
+
+Saves the current task list on your computer, and exits Chad. Tasks will be retrieved the next time you open Chad.
+- You can also exit by clicking the [X] button on the Chad window. Don't worry, Chad will save your tasks no matter what!
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000000..2e9f44da6a
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,65 @@
+plugins {
+ id 'java'
+ id 'application'
+ id 'com.github.johnrengelman.shadow' version '5.1.0'
+ id 'checkstyle'
+}
+
+repositories {
+ mavenCentral()
+}
+
+checkstyle {
+ sourceSets = []
+}
+
+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 = "chad.frontend.Main"
+}
+
+shadowJar {
+ archiveBaseName = "chad"
+ archiveClassifier = null
+}
+
+run{
+ standardInput = System.in
+}
+
+checkstyle {
+ toolVersion = '10.2'
+}
diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
new file mode 100644
index 0000000000..62281d3553
--- /dev/null
+++ b/config/checkstyle/checkstyle.xml
@@ -0,0 +1,434 @@
+
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\ 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..00e4b38243 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,29 +1,71 @@
-# User Guide
+# Chad Personal Assistant User Guide
## Features
-### Feature-ABC
+- Maintain a list of Tasks, Deadlines and Events.
+- View your list at any time with a simple command `list`.
+- Mark each item as Done or Not Done.
+- Delete obsolete tasks.
-Description of the feature.
+## Quick Start Guide
+1. Download the latest Chad version from [here](https://github.com/fahim-tazz/ip/releases).
+2. Open your Terminal/Command Prompt.
+3. Type `cd Downloads` (or wherever the `chad.jar` file is stored).
+4. Type in `java -jar chad.jar`.
+5. Type in commands to use Chad.
+6. Enjoy!
-### Feature-XYZ
-
-Description of the feature.
+---
## Usage
-### `Keyword` - Describe action
+### `list` - List all current tasks.
+
+Lists down all current tasks saved by Chad.
+- T, D and E represent Todo, Deadline and Event tasks respectively.
+- `[ ]` and `[X]` show whether a task is `Not Done` or `Done`, respectively.
+
+
+### `todo [task name]` - Add a new Todo item.
+
+Adds a new Todo task to your list.
+
+### `deadline [task name] /by [due date YYYY-MM-DD]` - Add a new Deadline item.
+
+Adds a new Deadline task to your list.
+- The name should be followed by a ` /by ` keyword.
+- The due date should come after the ` by `, and be in the format `YYYY-MM-DD`.
+
+### `event [event name] /from [start time] /to [end time]` - Add a new Event item.
+
+Adds a new Event to your list.
+- The name should be followed by a ` /from ` keyword.
+- The start time should come after the ` /from ` keyword, followed by ` /to `.
+- The end time should come after the ` /to ` keyoword.
+- Start and End times do not have any format constraints.
+
+### `mark [task no.]` - Marks a task as done.
+
+Marks the task at that serial number as done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+
+### `unmark [task no.]` - Marks a task as NOT done.
+
+Marks the task at that serial number as NOT done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
-Describe the action and its outcome.
+### `delete [task no.]` - Removes a task from the list.
-Example of usage:
+Permanently deletes the task at that serial number from the list.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+- Deleted tasks CANNOT be recovered.
-`keyword (optional arguments)`
+### `find [search phrase]` - Finds any task that matches with the search phrase.
-Expected outcome:
+Searches for any task that contains the search phrase.
+- Search is CASE-SENSITIVE. `laundry` will NOT match with a task named `Do Laundry`.
-Description of the outcome.
+### `bye` - Saves the current tasks and exits Chad.
-```
-expected output
-```
+Saves the current task list on your computer, and exits Chad. Tasks will be retrieved the next time you open Chad.
+- You can also exit by clicking the [X] button on the Chad window. Don't worry, Chad will save your tasks no matter what!
diff --git a/docs/Ui.png b/docs/Ui.png
new file mode 100644
index 0000000000..ff17eeca4e
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/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/chad/backend/Chad.java b/src/main/java/chad/backend/Chad.java
new file mode 100644
index 0000000000..dd262d129d
--- /dev/null
+++ b/src/main/java/chad/backend/Chad.java
@@ -0,0 +1,32 @@
+package chad.backend;
+
+import java.io.IOException;
+
+/**
+ * Class encapsulating Chad.
+ */
+public class Chad {
+ private final TaskList tasklist;
+ private final Parser parser;
+
+ /**
+ * Constructor for Chad.
+ */
+ public Chad() {
+ try {
+ this.tasklist = new TaskList();
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ this.parser = new Parser(this.tasklist);
+ }
+
+ /**
+ * Get Duke's response for a given input.
+ * @param input Input taken from the user.
+ * @return Output from Chad.
+ */
+ public String getResponse(String input) {
+ return parser.parse(input);
+ }
+}
diff --git a/src/main/java/chad/backend/Parser.java b/src/main/java/chad/backend/Parser.java
new file mode 100644
index 0000000000..abb93f5a0f
--- /dev/null
+++ b/src/main/java/chad/backend/Parser.java
@@ -0,0 +1,163 @@
+package chad.backend;
+
+import chad.commands.*;
+import chad.tasks.Task;
+
+import java.time.format.DateTimeParseException;
+
+public class Parser {
+ private final TaskList tasklist;
+
+ /**
+ * A flag to indicate that Chad is handling duplicates.
+ */
+ private boolean isCheckingDuplicates = false;
+
+ /**
+ * Stores the duplicate item that is being stored.
+ */
+ private Task duplicateTask;
+
+ public Parser(TaskList tasklist) {
+ this.tasklist = tasklist;
+ }
+
+ public String parse(String instr) {
+ String[] tokens = instr.strip().toLowerCase().split(" ", 2);
+ String command = tokens[0];
+ Command c;
+
+ // Guard Clause for duplicate checking.
+ if (isCheckingDuplicates) {
+ switch (command) {
+ case "yes":
+ c = new ForceAddDuplicate(duplicateTask, tasklist);
+ this.isCheckingDuplicates = false;
+ return c.execute();
+
+ case "no":
+ this.isCheckingDuplicates = false;
+ return "OK, I'm not adding this duplicate task.";
+
+ default:
+ this.isCheckingDuplicates = false;
+ }
+ }
+
+ switch (command) {
+ case "welcome":
+ return "Hello, Boss. I am Chad, your personal assistant.";
+ case "list":
+ c = new List(tasklist);
+ break;
+
+ case "bye":
+ c = new Bye(tasklist);
+ break;
+
+ case "mark":
+ try {
+ int idx = Integer.parseInt(tokens[1]);
+ c = new Mark(idx, tasklist);
+
+ // Executing here to catch IndexOutOfBoundsException.
+ c.execute();
+ break;
+ } catch (NumberFormatException nfe) {
+ return "Boss, you gotta enter an index after \"mark\"";
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Boss, please enter a valid index.";
+ }
+
+ case "unmark":
+ try {
+ int idx = Integer.parseInt(tokens[1]);
+ c = new Unmark(idx, tasklist);
+
+ // Executing here to catch IndexOutOfBoundsException.
+ return c.execute();
+ } catch (NumberFormatException nfe) {
+ return "Boss, you gotta enter an index after \"unmark\"";
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Boss, please enter a valid index.";
+ }
+
+ case "todo":
+ assert tokens.length > 1;
+ try {
+ String description = tokens[1];
+ c = new MakeTodo(description, tasklist, this);
+ break;
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Boss, please give me a name for this todo.";
+ }
+
+ case "deadline":
+ assert tokens.length > 1;
+
+ String[] tokensNameAndDeadline;
+ try {
+ tokensNameAndDeadline = tokens[1].split(" /by ");
+ assert tokensNameAndDeadline.length == 2;
+ String description = tokensNameAndDeadline[0];
+ System.out.println("\n\n\nDeadline name is:" + description + "\n\n\n");
+ String by = tokensNameAndDeadline[1];
+
+ c = new MakeDeadline(description, by, tasklist, this);
+ // Execute command here to catch dtpe.
+ return c.execute();
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Boss, please give me a deadline in the format:" +
+ "\n\n\"deadline [name] /by [deadline yyyy-mm-dd]\"";
+ } catch (DateTimeParseException dtpe) {
+ return "Boss, you gotta enter the deadline date in the format: yyyy-mm-dd.";
+ }
+
+ case "event":
+ try {
+ String[] tokensNameAndDates = tokens[1].split(" /from ");
+ String description = tokensNameAndDates[0];
+
+ String[] tokensStartdateAndEnddate = tokensNameAndDates[1].split(" /to ");
+ assert tokensStartdateAndEnddate.length == 2;
+ String from = tokensStartdateAndEnddate[0];
+ String to = tokensStartdateAndEnddate[1];
+ c = new MakeEvent(description, from, to, tasklist, this);
+ break;
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Boss, please give me an event in the format:" +
+ "\n\n\"event [name] /from [start] /to [end]\"";
+ }
+
+ case "delete":
+ try {
+ int idx = Integer.parseInt(tokens[1]);
+ c = new Delete(idx, tasklist);
+
+ // Executing here to catch IndexOutOfBoundsException.
+ return c.execute();
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Please enter a valid index, Boss.";
+ } catch (NumberFormatException nfe) {
+ return "Please enter an index after \"delete\".";
+ }
+
+ case "find":
+ try {
+ String searchKey = tokens[1];
+ c = new Find(searchKey, tasklist);
+ break;
+ } catch (IndexOutOfBoundsException ioobe) {
+ return "Please enter a search phrase after \"find\".";
+ }
+ default:
+ return "Boss, I'm sorry, but I don't understand :-(\n";
+ }
+ return c.execute();
+ }
+
+ public void handleDuplicates(Task t) {
+ this.isCheckingDuplicates = true;
+ this.duplicateTask = t;
+ }
+}
diff --git a/src/main/java/chad/backend/Storage.java b/src/main/java/chad/backend/Storage.java
new file mode 100644
index 0000000000..c0c9a88328
--- /dev/null
+++ b/src/main/java/chad/backend/Storage.java
@@ -0,0 +1,92 @@
+package chad.backend;
+
+import java.io.File;
+import java.io.FileWriter;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import java.util.ArrayList;
+
+import java.util.Scanner;
+
+import chad.tasks.Deadline;
+import chad.tasks.Event;
+import chad.tasks.Task;
+import chad.tasks.Todo;
+
+class Storage {
+ private final File prevTasks;
+
+ public Storage(File prevTasks) {
+ this.prevTasks = prevTasks;
+ }
+
+ public ArrayList extractTasks() throws IOException {
+ Scanner fileSc;
+ ArrayList tasks = new ArrayList<>();
+ try {
+ fileSc = new Scanner(prevTasks);
+ while (fileSc.hasNextLine()) {
+ String[] savedData = fileSc.nextLine()
+ .split(" \\| ");
+ Task t = new Todo("");
+ switch (savedData[0]) {
+ case "T":
+ t = new Todo(savedData[2]);
+ break;
+ case "D":
+ t = new Deadline(savedData[2], savedData[3]);
+ break;
+ case "E":
+ t = new Event(savedData[2], savedData[3], savedData[4]);
+ break;
+ default:
+ }
+ if (savedData[1].equals("0")) {
+ t.unmark();
+ } else {
+ t.mark();
+ }
+ tasks.add(t);
+ }
+ fileSc.close();
+ } catch (FileNotFoundException fnfe) {
+ // Previous task file doesn't exist,
+ prevTasks.createNewFile();
+ }
+ return tasks;
+ }
+
+ public void saveTasks(ArrayList tasks) {
+ String encoding = "";
+ for (int i = 0; i < tasks.size(); i++) {
+ Task t = tasks.get(i);
+ switch (t.getClass().getSimpleName()) { //encoding: "E | NAME | FROM | TO"
+ case "Todo":
+ encoding = encoding + ("T | " + (t.isDone() ? "1" : "0") + " | ");
+ encoding = encoding + t.getDescription();
+ break;
+ case "Deadline":
+ encoding = encoding + ("D | " + (t.isDone() ? "1" : "0") + " | ");
+ encoding = encoding + t.getDescription() + " | " + ((Deadline) t).getDeadline();
+ break;
+ case "Event":
+ encoding = encoding + ("E | " + (t.isDone() ? "1" : "0" + " | "));
+ encoding = encoding + (t.getDescription() + " | " + ((Event) t).getStart() + " | "
+ + ((Event) t).getEnd());
+ break;
+ default:
+ }
+ encoding = encoding + "\n";
+ }
+ try {
+ FileWriter fw = new FileWriter(prevTasks);
+ fw.write(encoding);
+ fw.flush();
+ fw.close();
+ } catch (IOException e) {
+
+ }
+ }
+}
diff --git a/src/main/java/chad/backend/TaskList.java b/src/main/java/chad/backend/TaskList.java
new file mode 100644
index 0000000000..244634851f
--- /dev/null
+++ b/src/main/java/chad/backend/TaskList.java
@@ -0,0 +1,96 @@
+package chad.backend;
+
+import chad.tasks.Task;
+
+import java.io.File;
+import java.io.IOException;
+
+import java.util.ArrayList;
+
+
+/**
+ * Class storing all the tasks stored in Duke.
+ */
+public class TaskList {
+ private final ArrayList tasks;
+ private final Storage saveManager;
+
+ /**
+ * Constructor for a TaskList.
+ * @throws IOException
+ */
+ public TaskList() throws IOException {
+ // load from file
+ File prevTasks = new File("tasks.txt");
+ if (!prevTasks.exists()){
+ prevTasks.createNewFile();
+ }
+ this.saveManager = new Storage(prevTasks);
+ this.tasks = new ArrayList<>(saveManager.extractTasks());
+ }
+
+ /**
+ * Add a new task to the TaskList.
+ * @param t The Task to be added.
+ */
+ public void add(Task t) {
+ tasks.add(t);
+ }
+
+ /**
+ * Getter for TaskList Tasks.
+ * @param idx 0-Index of the task to get.
+ * @return The Task at that index.
+ */
+ public Task get(int idx) {
+ return tasks.get(idx);
+ }
+
+ /**
+ * Marks a Task as done.
+ * @param idx 0-Index of the Task to be marked.
+ * @return Task at index idx, marked as done.
+ */
+ public Task mark(int idx) {
+ Task t = tasks.get(idx);
+ t.mark();
+ return t;
+ }
+
+ /**
+ * Marks a Task as not done.
+ * @param idx 0-Index of the Task to be unmarked.
+ * @return Task at index idx, marked as not done.
+ */
+ public Task unmarkIdx(int idx) {
+ Task t = tasks.get(idx);
+ t.unmark();
+ return t;
+ }
+
+ /**
+ * Deletes the Task at a particular index.
+ * @param idx The 0-index of the Task to be deleted.
+ * @return The deleted Task object.
+ */
+ public Task delete(int idx) {
+ Task t = tasks.get(idx);
+ tasks.remove(idx);
+ return t;
+ }
+
+ /**
+ * Get the whole list of Tasks as an Array.
+ * @return An ArrayList of Tasks.
+ */
+ public ArrayList getWholeList() {
+ return this.tasks;
+ }
+
+ /**
+ * Saves the tasks to a .TXT file via the Storage object.
+ */
+ public void closeAndSave() {
+ this.saveManager.saveTasks(this.tasks);
+ }
+}
diff --git a/src/main/java/chad/commands/Bye.java b/src/main/java/chad/commands/Bye.java
new file mode 100644
index 0000000000..76128b387c
--- /dev/null
+++ b/src/main/java/chad/commands/Bye.java
@@ -0,0 +1,24 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+
+/**
+ * Command for exiting Duke.
+ */
+public class Bye extends Command {
+ private final TaskList tasklist;
+
+ /**
+ * Constructor for a Bye command.
+ * @param tasklist The TaskList to save.
+ */
+ public Bye(TaskList tasklist) {
+ this.tasklist = tasklist;
+ }
+
+ @Override
+ public String execute() {
+ tasklist.closeAndSave();
+ return "Cheers, Boss, I'll see you soon!\n";
+ }
+}
diff --git a/src/main/java/chad/commands/Command.java b/src/main/java/chad/commands/Command.java
new file mode 100644
index 0000000000..8754521a97
--- /dev/null
+++ b/src/main/java/chad/commands/Command.java
@@ -0,0 +1,12 @@
+package chad.commands;
+
+/**
+ * Abstract class representing a Command to be executed.
+ */
+public abstract class Command {
+ /**
+ * Executes the implemented Command.
+ * @return The string output result of execution.
+ */
+ public abstract String execute();
+}
diff --git a/src/main/java/chad/commands/Delete.java b/src/main/java/chad/commands/Delete.java
new file mode 100644
index 0000000000..158694b993
--- /dev/null
+++ b/src/main/java/chad/commands/Delete.java
@@ -0,0 +1,31 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+/**
+ * Command for Deletion.
+ */
+public class Delete extends Command {
+
+ private final int idx;
+ private final TaskList tasklist;
+
+ /**
+ * Constructor for Delete command.
+ * @param idx 1-index of Task to be deleted.
+ * @param tasklist The list to be deleted from.
+ */
+ public Delete(int idx, TaskList tasklist) {
+ this.idx = idx;
+ this.tasklist = tasklist;
+ }
+
+ @Override
+ public String execute() {
+ assert (idx <= tasklist.getWholeList().size());
+ Task t = tasklist.delete(idx - 1);
+ String res = "Alright! I've deleted this task: " + t.toString() + "\n";
+ return res;
+ }
+}
diff --git a/src/main/java/chad/commands/Find.java b/src/main/java/chad/commands/Find.java
new file mode 100644
index 0000000000..65e32b3f0b
--- /dev/null
+++ b/src/main/java/chad/commands/Find.java
@@ -0,0 +1,48 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+import javafx.util.Pair;
+
+import java.util.ArrayList;
+
+/**
+ * Command for finding a Task.
+ */
+public class Find extends Command {
+
+ private final TaskList tasklist;
+ private final String searchKey;
+
+ /**
+ * Constructor for a Find command.
+ * @param searchKey The keyword to search for.
+ * @param tasklist The list to search in.
+ */
+ public Find(String searchKey, TaskList tasklist) {
+ this.tasklist = tasklist;
+ this.searchKey = searchKey;
+ }
+
+ @Override
+ public String execute() {
+ ArrayList currentTasks = tasklist.getWholeList();
+ ArrayList> searchResults = new ArrayList<>();
+ for (int i = 0; i < currentTasks.size(); i++) {
+ Task curr = currentTasks.get(i);
+ if (curr.getDescription().contains(searchKey)) {
+ searchResults.add(new Pair<>(i + 1, curr));
+ }
+ }
+ StringBuilder res = new StringBuilder();
+ if (searchResults.size() != 0) {
+ res.append("I've found these matching tasks:\n");
+ for (Pair p : searchResults) {
+ res.append(p.getKey() + ". " + p.getValue() + "\n");
+ }
+ } else {
+ res.append("Too bad, Boss, I did not find any tasks matching your search keyword :-( .");
+ }
+ return res.toString();
+ }
+}
diff --git a/src/main/java/chad/commands/ForceAddDuplicate.java b/src/main/java/chad/commands/ForceAddDuplicate.java
new file mode 100644
index 0000000000..0f5c3ed8ea
--- /dev/null
+++ b/src/main/java/chad/commands/ForceAddDuplicate.java
@@ -0,0 +1,21 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+public class ForceAddDuplicate extends Command {
+ private final Task task;
+ private final TaskList tasklist;
+
+ public ForceAddDuplicate(Task task, TaskList tasklist) {
+ this.task = task;
+ this.tasklist = tasklist;
+ }
+
+
+ @Override
+ public String execute() {
+ tasklist.add(task);
+ return "Alright then, I'll add this duplicate task.";
+ }
+}
diff --git a/src/main/java/chad/commands/List.java b/src/main/java/chad/commands/List.java
new file mode 100644
index 0000000000..411ecb8c21
--- /dev/null
+++ b/src/main/java/chad/commands/List.java
@@ -0,0 +1,36 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+import java.util.ArrayList;
+
+/**
+ * Command to list down all current Tasks.
+ */
+public class List extends Command {
+ private final ArrayList tasks;
+
+ /**
+ * Constructor for a List command.
+ * @param tasklist The list of tasks to enumerate.
+ */
+ public List(TaskList tasklist) {
+ this.tasks = tasklist.getWholeList();
+ }
+
+ @Override
+ public String execute() {
+ // Guard Clause:
+ if (tasks.size() == 0) {
+ return "You don't have any pending tasks, Boss.";
+ }
+
+ StringBuilder res = new StringBuilder();
+ res.append("Here are the tasks in your list:\n");
+ for (int i = 0; i < tasks.size(); i++) {
+ res.append(String.format("%d. %s\n", (i + 1), tasks.get(i).toString()));
+ }
+ return res.toString();
+ }
+}
diff --git a/src/main/java/chad/commands/Make.java b/src/main/java/chad/commands/Make.java
new file mode 100644
index 0000000000..f0f8dc3910
--- /dev/null
+++ b/src/main/java/chad/commands/Make.java
@@ -0,0 +1,40 @@
+package chad.commands;
+
+import chad.backend.Parser;
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+import java.util.ArrayList;
+
+abstract class Make extends Command {
+ protected String description;
+ protected TaskList tasklist;
+ protected Parser parser;
+
+ Make(String description, TaskList tasklist, Parser parser) {
+ this.description = description;
+ this.tasklist = tasklist;
+ this.parser = parser;
+ }
+
+ public Task findDuplicates() {
+ ArrayList list = tasklist.getWholeList();
+ String lowerCaseDescription = this.description.toLowerCase();
+ for (int i = 0; i < list.size(); i++) {
+ Task t = list.get(i);
+ String duplicateName = t.getDescription().toLowerCase();
+ if (duplicateName.equals(lowerCaseDescription)) {
+ return t;
+ }
+ }
+ return null;
+ }
+
+ public String duplicateFound(Task newTask, Task duplicate) {
+ parser.handleDuplicates(newTask);
+ return "Boss, I've found a an existing task with the same name:\n"
+ + duplicate
+ + "\nDo you still want to add this new task?\n"
+ + newTask;
+ }
+}
diff --git a/src/main/java/chad/commands/MakeDeadline.java b/src/main/java/chad/commands/MakeDeadline.java
new file mode 100644
index 0000000000..42c7bedf95
--- /dev/null
+++ b/src/main/java/chad/commands/MakeDeadline.java
@@ -0,0 +1,38 @@
+package chad.commands;
+
+import chad.backend.Parser;
+import chad.backend.TaskList;
+import chad.tasks.Deadline;
+import chad.tasks.Task;
+
+/**
+ * Command to create a Deadline.
+ */
+public class MakeDeadline extends Make {
+ private final String by;
+ private TaskList tasklist;
+
+ /**
+ * Constructor for a MakeDeadline command.
+ * @param description The name of the Deadline.
+ * @param by Due date of the Deadline.
+ * @param tasklist The list to add the Deadline to.
+ */
+ public MakeDeadline(String description, String by, TaskList tasklist, Parser parser) {
+ super(description, tasklist, parser);
+ this.by = by;
+ }
+
+ @Override
+ public String execute() {
+ Task t = new Deadline(description, by);
+ // Guard Clause:
+ Task duplicate = findDuplicates();
+ if (duplicate != null) {
+ return duplicateFound(t, duplicate);
+ }
+ System.out.println("created deadline " + t);
+ super.tasklist.add(t);
+ return "Added this new Deadline: \n" + t;
+ }
+}
diff --git a/src/main/java/chad/commands/MakeEvent.java b/src/main/java/chad/commands/MakeEvent.java
new file mode 100644
index 0000000000..bac2ecd0f3
--- /dev/null
+++ b/src/main/java/chad/commands/MakeEvent.java
@@ -0,0 +1,39 @@
+package chad.commands;
+
+import chad.backend.Parser;
+import chad.backend.TaskList;
+import chad.tasks.Event;
+import chad.tasks.Task;
+
+/**
+ * Command to create an Event.
+ */
+public class MakeEvent extends Make {
+ private final String from;
+ private final String to;
+
+ /**
+ * Constructor for a command to make a new Event.
+ * @param description Name of the Event.
+ * @param from Start time of the Event.
+ * @param to End time of the Event.
+ * @param tasklist The list to add this Event to.
+ */
+ public MakeEvent(String description, String from, String to, TaskList tasklist, Parser parser) {
+ super(description, tasklist, parser);
+ this.from = from;
+ this.to = to;
+ }
+
+ @Override
+ public String execute() {
+ Task t = new Event(description, from, to);
+ // Guard clause:
+ Task duplicate = findDuplicates();
+ if (duplicate != null) {
+ return duplicateFound(t, duplicate);
+ }
+ super.tasklist.add(t);
+ return "Added this new Event:\n" + t;
+ }
+}
diff --git a/src/main/java/chad/commands/MakeTodo.java b/src/main/java/chad/commands/MakeTodo.java
new file mode 100644
index 0000000000..8af4c4bb39
--- /dev/null
+++ b/src/main/java/chad/commands/MakeTodo.java
@@ -0,0 +1,36 @@
+package chad.commands;
+
+import chad.backend.Parser;
+import chad.backend.TaskList;
+import chad.tasks.Task;
+import chad.tasks.Todo;
+
+/**
+ * Command to create a Todo.
+ */
+public class MakeTodo extends Make {
+
+ /**
+ * Constructor for a command to make a new Todo.
+ * @param description Name of the Todo.
+ * @param tasklist The list to add this Todo to.
+ */
+ public MakeTodo(String description, TaskList tasklist, Parser parser) {
+ super(description, tasklist, parser);
+ }
+
+ @Override
+ public String execute() {
+ Task t = new Todo(description);
+ // Guard Clause:
+ Task duplicate = findDuplicates();
+ if (duplicate != null) {
+ return duplicateFound(t, duplicate);
+ }
+
+ super.tasklist.add(t);
+ return "Added this new Todo: \n" + t;
+ }
+
+
+}
diff --git a/src/main/java/chad/commands/Mark.java b/src/main/java/chad/commands/Mark.java
new file mode 100644
index 0000000000..d76d3c2c69
--- /dev/null
+++ b/src/main/java/chad/commands/Mark.java
@@ -0,0 +1,30 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+/**
+ * Command to Mark a Task as done.
+ */
+public class Mark extends Command {
+ private final int idx;
+ private final TaskList tasklist;
+
+ /**
+ * Constructor for a Mark command.
+ * @param idx The 1-index of the Task to mark.
+ * @param tasklist The list to mark the Task from.
+ */
+ public Mark(int idx, TaskList tasklist) {
+ this.idx = idx;
+ this.tasklist = tasklist;
+ }
+
+ @Override
+ public String execute() {
+ assert (idx <= tasklist.getWholeList().size());
+ Task t = tasklist.get(idx - 1);
+ t.mark();
+ return "Lesgo! I've marked this task as done:\n" + t + "\n";
+ }
+}
diff --git a/src/main/java/chad/commands/Unmark.java b/src/main/java/chad/commands/Unmark.java
new file mode 100644
index 0000000000..65755c880c
--- /dev/null
+++ b/src/main/java/chad/commands/Unmark.java
@@ -0,0 +1,30 @@
+package chad.commands;
+
+import chad.backend.TaskList;
+import chad.tasks.Task;
+
+/**
+ * Command to Mark a Task as not done.
+ */
+public class Unmark extends Command {
+ private final int idx;
+ private final TaskList tasklist;
+
+ /**
+ * Constructor for an Unmark command.
+ * @param idx 1-index of the Task to be unmarked.
+ * @param tasklist The list to unmark the Task from.
+ */
+ public Unmark(int idx, TaskList tasklist) {
+ this.idx = idx;
+ this.tasklist = tasklist;
+ }
+
+ @Override
+ public String execute() {
+ assert (idx <= tasklist.getWholeList().size());
+ Task t = tasklist.get(idx - 1);
+ t.unmark();
+ return "Ok Boss, I've marked this task as not done:\n" + t + "\n";
+ }
+}
diff --git a/src/main/java/chad/exceptions/DukeException.java b/src/main/java/chad/exceptions/DukeException.java
new file mode 100644
index 0000000000..ebc67d31bd
--- /dev/null
+++ b/src/main/java/chad/exceptions/DukeException.java
@@ -0,0 +1,14 @@
+package chad.exceptions;
+
+/**
+ * Parent class for all Duke-internal exceptions.
+ */
+public class DukeException extends Exception {
+ /**
+ * Constructor for a Duke exception.
+ * @param msg The exception message.
+ */
+ public DukeException(String msg) {
+ super(msg);
+ }
+}
diff --git a/src/main/java/chad/frontend/DialogBox.java b/src/main/java/chad/frontend/DialogBox.java
new file mode 100644
index 0000000000..a414a674f7
--- /dev/null
+++ b/src/main/java/chad/frontend/DialogBox.java
@@ -0,0 +1,61 @@
+package chad.frontend;
+
+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;
+
+/**
+ * An example of a custom control using FXML.
+ * This control represents a dialog box consisting of an ImageView to represent the speaker's face and a label
+ * containing text from the speaker.
+ */
+public class DialogBox extends HBox {
+ @FXML
+ private Label dialog;
+ @FXML
+ private ImageView displayPicture;
+
+ 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);
+ }
+
+ public static DialogBox getUserDialog(String text, Image img) {
+ return new DialogBox(text, img);
+ }
+
+ public static DialogBox getDukeDialog(String text, Image img) {
+ var db = new DialogBox(text, img);
+ db.flip();
+ return db;
+ }
+}
diff --git a/src/main/java/chad/frontend/Main.java b/src/main/java/chad/frontend/Main.java
new file mode 100644
index 0000000000..58c2bd08cd
--- /dev/null
+++ b/src/main/java/chad/frontend/Main.java
@@ -0,0 +1,50 @@
+package chad.frontend;
+
+import java.io.IOException;
+
+import chad.backend.Chad;
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.layout.AnchorPane;
+import javafx.stage.Stage;
+
+/**
+ * A GUI for Duke using FXML.
+ */
+public class Main extends Application {
+
+ private static Chad chad;
+
+ public static void exit() {
+ Platform.exit();
+ System.exit(0);
+ }
+
+ @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.setTitle("Chad - Your Personal Digital Assistant");
+ stage.setScene(scene);
+ chad = new Chad();
+ fxmlLoader.getController().setChad(chad);
+ stage.show();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ @Override
+ public void stop() throws Exception {
+ chad.getResponse("bye");
+ super.stop();
+ }
+
+ public static void main(String[] args) {
+ Application.launch(Main.class, args);
+ }
+}
diff --git a/src/main/java/chad/frontend/MainWindow.java b/src/main/java/chad/frontend/MainWindow.java
new file mode 100644
index 0000000000..d73063c303
--- /dev/null
+++ b/src/main/java/chad/frontend/MainWindow.java
@@ -0,0 +1,76 @@
+package chad.frontend;
+
+import chad.backend.Chad;
+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 java.util.Timer;
+import java.util.TimerTask;
+
+/**
+ * Controller for MainWindow. Provides the layout for the other controls.
+ */
+public class MainWindow extends AnchorPane {
+ @FXML
+ private ScrollPane scrollPane;
+ @FXML
+ private VBox dialogContainer;
+ @FXML
+ private TextField userInput;
+ @FXML
+ private Button sendButton;
+
+ private Chad chad;
+
+ private final Image userImage = new Image(this.getClass().getResourceAsStream("/images/soyjak.png"));
+ private final Image jarvisImage
+ = new Image(this.getClass().getResourceAsStream("/images/chad.png"));
+
+ @FXML
+ public void initialize() {
+ scrollPane.vvalueProperty().bind(dialogContainer.heightProperty());
+ }
+
+ public void setChad(Chad j) {
+ chad = j;
+ dialogContainer.getChildren().add(DialogBox.getDukeDialog(chad.getResponse("welcome"), jarvisImage
+ ));
+ }
+
+ /**
+ * 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();
+ if (input.equals("")) {
+ return;
+ }
+ String response = chad.getResponse(input);
+
+ dialogContainer.getChildren().addAll(
+ DialogBox.getUserDialog((input), userImage),
+ DialogBox.getDukeDialog((response), jarvisImage
+ )
+ );
+ userInput.clear();
+
+ if (input.strip().equals("bye")) {
+ Timer delay = new Timer();
+ TimerTask exit = new TimerTask() {
+ @Override
+ public void run() {
+ Main.exit();
+ }
+ };
+ // Wait 2s before closing.
+ delay.schedule(exit, 1500);
+ }
+ }
+}
diff --git a/src/main/java/chad/tasks/Deadline.java b/src/main/java/chad/tasks/Deadline.java
new file mode 100644
index 0000000000..0eb671ae0e
--- /dev/null
+++ b/src/main/java/chad/tasks/Deadline.java
@@ -0,0 +1,40 @@
+package chad.tasks;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeParseException;
+
+/**
+ * Represents a Deadline task, encapsulating a deadline localDate.
+ */
+public class Deadline extends Task {
+ private final LocalDate by;
+
+ /**
+ * Constructor for a Deadline task object.
+ * @param description The name of the deadline object.
+ * @param by The deadline date for this Deadline, in the format yyyy-mm-dd.
+ * @throws DateTimeParseException
+ */
+ public Deadline(String description, String by) throws DateTimeParseException {
+ super(description);
+ this.by = LocalDate.parse(by);
+ }
+
+ /**
+ * Getter method for a Deadline object.
+ * @return The deadline as a LocalDate object.
+ */
+ public LocalDate getDeadline() {
+ return this.by;
+ }
+
+ /**
+ * String representation of a Deadline task.
+ * @return String in the format [D] description (by: due date).
+ */
+ @Override
+ public String toString() {
+ return "[D]" + super.toString() + " (by: " + by + ")";
+ }
+}
+
diff --git a/src/main/java/chad/tasks/Event.java b/src/main/java/chad/tasks/Event.java
new file mode 100644
index 0000000000..7c0500a222
--- /dev/null
+++ b/src/main/java/chad/tasks/Event.java
@@ -0,0 +1,40 @@
+package chad.tasks;
+
+/**
+ * Represents an Event task, encapsulating a start and end times as Strings.
+ */
+public class Event extends Task {
+
+ private final String start;
+ private final String end;
+
+ /**
+ * Constructor for an Event task.
+ * @param description The name of the Event.
+ * @param start The start time as a String.
+ * @param end The end time as a String.
+ */
+ public Event(String description, String start, String end) {
+ super(description);
+ this.start = start;
+ this.end = end;
+ }
+
+ public String getStart() {
+ return start;
+ }
+
+ public String getEnd() {
+ return end;
+ }
+
+ /**
+ * String representation of an Event, in the format [E] description (from: start to end).
+ * @return String representation of Event object.
+ */
+ @Override
+ public String toString() {
+ return "[E]" + super.toString() + " (from: " + start + " to: " + end + ")";
+ }
+}
+
diff --git a/src/main/java/chad/tasks/Task.java b/src/main/java/chad/tasks/Task.java
new file mode 100644
index 0000000000..1a47c52524
--- /dev/null
+++ b/src/main/java/chad/tasks/Task.java
@@ -0,0 +1,62 @@
+package chad.tasks;
+
+/**
+ * An abstract task class that encapsulates the description of any type of Task.
+ */
+public abstract class Task {
+ private final String description;
+ private boolean isDone;
+
+ /**
+ * Constructor for a Task object. Only to be used by subclasses.
+ * @param description The name of the Task.
+ */
+ protected Task(String description) {
+ this.description = description;
+ this.isDone = false;
+ }
+
+ private String getStatusIcon() {
+ return (isDone ? "X" : " ");
+ }
+
+ /**
+ * Getter for description of a Task.
+ * @return Description as a String.
+ */
+ public String getDescription() {
+ return description;
+ }
+
+ /**
+ * Getter for the done status of a Task.
+ * @return True for done tasks, false for undone tasks.
+ */
+ public boolean isDone() {
+ return isDone;
+ }
+
+ /**
+ * Marks this Task as done.
+ */
+ public void mark() {
+ this.isDone = true;
+ }
+
+ /**
+ * (Un)Marks this task as done.
+ */
+ public void unmark() {
+ this.isDone = false;
+ }
+
+ /**
+ * String representation of any Task, in the format [doneIcon] description.
+ * @return String representation of this Task.
+ */
+ @Override
+ public String toString() {
+ return "[" + this.getStatusIcon() + "] " + this.description;
+ }
+}
+
diff --git a/src/main/java/chad/tasks/Todo.java b/src/main/java/chad/tasks/Todo.java
new file mode 100644
index 0000000000..68b327cdef
--- /dev/null
+++ b/src/main/java/chad/tasks/Todo.java
@@ -0,0 +1,25 @@
+package chad.tasks;
+
+/**
+ * Represents a Todo task, encapsulating only the description of the Todo.
+ */
+public class Todo extends Task {
+
+ /**
+ * Constructor for a Todo task.
+ * @param description The name of the Todo.
+ */
+ public Todo(String description) {
+ super(description);
+ }
+
+ /**
+ * String representation of a Todo task, in the format [T] [doneIcon] description.
+ * @return A string representation of this Todo task.
+ */
+ @Override
+ public String toString() {
+ return "[T]" + super.toString();
+ }
+}
+
diff --git a/src/main/resources/images/DaDuke.png b/src/main/resources/images/DaDuke.png
new file mode 100644
index 0000000000..d893658717
Binary files /dev/null and b/src/main/resources/images/DaDuke.png differ
diff --git a/src/main/resources/images/DaUser.png b/src/main/resources/images/DaUser.png
new file mode 100644
index 0000000000..3c82f45461
Binary files /dev/null and b/src/main/resources/images/DaUser.png differ
diff --git a/src/main/resources/images/chad.png b/src/main/resources/images/chad.png
new file mode 100644
index 0000000000..707df41e7e
Binary files /dev/null and b/src/main/resources/images/chad.png differ
diff --git a/src/main/resources/images/soyjak.png b/src/main/resources/images/soyjak.png
new file mode 100644
index 0000000000..a815eddedf
Binary files /dev/null and b/src/main/resources/images/soyjak.png differ
diff --git a/src/main/resources/view/DialogBox.fxml b/src/main/resources/view/DialogBox.fxml
new file mode 100644
index 0000000000..59844f8590
--- /dev/null
+++ b/src/main/resources/view/DialogBox.fxml
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/main/resources/view/MainWindow.fxml b/src/main/resources/view/MainWindow.fxml
new file mode 100644
index 0000000000..0af68c93c0
--- /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/chad/backend/ParserTest.java b/src/test/java/chad/backend/ParserTest.java
new file mode 100644
index 0000000000..d4852ddba5
--- /dev/null
+++ b/src/test/java/chad/backend/ParserTest.java
@@ -0,0 +1,113 @@
+package chad.backend;
+
+import chad.tasks.Task;
+import chad.tasks.Todo;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ParserTest {
+ @Test
+ public void parser_welcome_printsWelcomeMsg() throws IOException {
+ Parser parser = new Parser(new TaskList());
+ assertEquals("Hello, Boss. I am Chad, your personal assistant.", parser.parse("welcome"));
+ }
+
+ @Test
+ public void parser_list_printsList() throws IOException {
+ TaskList list = new TaskList();
+ list.getWholeList().removeAll(list.getWholeList());
+ Parser parser = new Parser(list);
+ assertEquals("You don't have any pending tasks, Boss.", parser.parse("list"));
+
+ parser.parse("todo hello1");
+ parser.parse("event hello /from 2pm /to 3pm");
+ String expected = "Here are the tasks in your list:\n1. [T][ ] hello1\n2. [E][ ] hello (from: 2pm to: 3pm)\n";
+ assertEquals(expected, parser.parse("list"));
+ }
+
+ @Test
+ public void parser_bye_savesList() throws IOException {
+ TaskList list = new TaskList();
+ list.getWholeList().removeAll(list.getWholeList());
+ Parser parser = new Parser(list);
+
+ // Populate list:
+ parser.parse("todo hello1");
+ parser.parse("event hello2 /from 2pm /to 3pm");
+ parser.parse("event hello3 /from 2pm /to 3pm");
+ parser.parse("event hello4 /from 2pm /to 3pm");
+
+ // Save current list:
+ String expectedSaves = parser.parse("list");
+ assertEquals("Cheers, Boss, I'll see you soon!\n", parser.parse("bye"));
+
+ // Create new List and Parser:
+ TaskList newList = new TaskList();
+ Parser newParser = new Parser(newList);
+
+ //Check if list retrieved successfully:
+ assertEquals(expectedSaves, newParser.parse("list"));
+ }
+
+ @Test
+ public void parser_duplicateTasksYes_confirmsDuplicates() throws IOException {
+ TaskList list = new TaskList();
+ list.getWholeList().removeAll(list.getWholeList());
+ Parser parser = new Parser(list);
+
+ // Populate list:
+ parser.parse("todo hello1");
+ parser.parse("event hello2 /from 2pm /to 3pm");
+ parser.parse("event hello3 /from 2pm /to 3pm");
+ parser.parse("event hello4 /from 2pm /to 3pm");
+
+ // Insert duplicate:
+ String expected = "Boss, I've found a an existing task with the same name:\n"
+ + new Todo("hello1")
+ + "\nDo you still want to add this new task?\n"
+ + new Todo("hello1");
+ assertEquals(expected, parser.parse("todo hello1"));
+
+ // Choose to save duplicate:
+ parser.parse("yes");
+
+ // Check if latest task is equal to the newly added task:
+ ArrayList newList = list.getWholeList();
+ assertEquals(new Todo("hello1").toString(),
+ newList.get(newList.size() - 1).toString());
+ }
+
+ @Test
+ public void parser_duplicateTasksNo_confirmsDuplicates() throws IOException {
+ TaskList list = new TaskList();
+ list.getWholeList().removeAll(list.getWholeList());
+ Parser parser = new Parser(list);
+
+ // Populate list:
+ parser.parse("todo hello1");
+ parser.parse("event hello2 /from 2pm /to 3pm");
+ parser.parse("event hello3 /from 2pm /to 3pm");
+ parser.parse("event hello4 /from 2pm /to 3pm");
+
+ // Note down the current last task:
+ Task previousLastTask = list.get(3);
+
+ // Insert duplicate:
+ String expected = "Boss, I've found a an existing task with the same name:\n"
+ + new Todo("hello1")
+ + "\nDo you still want to add this new task?\n"
+ + new Todo("hello1");
+ assertEquals(expected, parser.parse("todo hello1"));
+
+ // Choose to save duplicate:
+ parser.parse("no");
+
+ // Check if last task is unchanged:
+ assertEquals(previousLastTask,
+ list.get(3));
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/chad/backend/TaskListTest.java b/src/test/java/chad/backend/TaskListTest.java
new file mode 100644
index 0000000000..adf66718de
--- /dev/null
+++ b/src/test/java/chad/backend/TaskListTest.java
@@ -0,0 +1,56 @@
+package chad.backend;
+
+import chad.tasks.Task;
+import chad.tasks.Todo;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TaskListTest {
+ /**
+ * Empties the tasks.txt before testing.
+ * @throws IOException
+ */
+ private void clearTasks() throws IOException {
+ FileWriter fw = new FileWriter(new File("./tasks.txt"));
+ fw.write("");
+ fw.flush();
+ fw.close();
+ }
+ @Test
+ public void markTask_UnmarkedTodoIndex_MarkedTodo() throws IOException {
+ clearTasks();
+ Todo t = new Todo("Hello");
+ TaskList list = new TaskList();
+ list.add(t);
+ assertTrue(list.mark(0).isDone());
+ }
+
+ @Test
+ public void unmarkTask_markedTodoIndex_unmarkedTodo() throws IOException {
+ clearTasks();
+ Todo t = new Todo("Hello");
+ t.mark();
+ TaskList list = new TaskList();
+ list.add(t);
+ assertFalse(list.unmarkIdx(0).isDone());
+ }
+
+ @Test
+ public void deleteTask_deleteAnIndex_TaskAtIndexDeleted() throws IOException {
+ clearTasks();
+ Task t1 = new Todo("Task 1");
+ Task t2 = new Todo("Task 2");
+ Task t3 = new Todo("Task 3");
+ TaskList list = new TaskList();
+ list.add(t1);
+ list.add(t2);
+ list.add(t3);
+ assertEquals(t2, list.delete(1));
+ assertEquals(t3, list.getWholeList().get(1));
+ }
+}
diff --git a/text-ui-test/EXPECTED.TXT b/text-ui-test/EXPECTED.TXT
index 657e74f6e7..b6fe9da5ce 100644
--- a/text-ui-test/EXPECTED.TXT
+++ b/text-ui-test/EXPECTED.TXT
@@ -1,7 +1,80 @@
-Hello from
- ____ _
-| _ \ _ _| | _____
-| | | | | | | |/ / _ \
-| |_| | |_| | < __/
-|____/ \__,_|_|\_\___|
+____________________________________________________________
+Hello! I'm Duke
+What can I do for you?
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+____________________________________________________________
+
+____________________________________________________________
+Nice! I've marked this task as done:
+[T][X] wash car
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][X] wash car
+____________________________________________________________
+
+____________________________________________________________
+OK! I've marked this task as not done yet:
+[T][ ] wash car
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+2. [T][ ] Take out trash
+____________________________________________________________
+
+____________________________________________________________
+Nice! I've marked this task as done:
+[T][X] Take out trash
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+2. [T][X] Take out trash
+3. [D][ ] assignment (by: Sunday 3pm)
+____________________________________________________________
+
+____________________________________________________________
+Nice! I've marked this task as done:
+[D][X] assignment (by: Sunday 3pm)
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+2. [T][X] Take out trash
+3. [D][X] assignment (by: Sunday 3pm)
+____________________________________________________________
+
+____________________________________________________________
+Here are the tasks in your list:
+
+1. [T][ ] wash car
+2. [T][X] Take out trash
+3. [D][X] assignment (by: Sunday 3pm)
+4. [D][ ] Celebration (from: morning to: night)
+____________________________________________________________
diff --git a/text-ui-test/EXPECTED_UNIX.txt b/text-ui-test/EXPECTED_UNIX.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/text-ui-test/input.txt b/text-ui-test/input.txt
index e69de29bb2..a9c1ce85a9 100644
--- a/text-ui-test/input.txt
+++ b/text-ui-test/input.txt
@@ -0,0 +1,16 @@
+list
+todo wash car
+list
+mark 1
+list
+unmark 1
+list
+todo Take out trash
+list
+mark 2
+deadline assignment /by Sunday 3pm
+list
+mark 3
+list
+event Celebration /from morning /to night
+list
diff --git a/text-ui-test/runtest.sh b/text-ui-test/runtest.sh
old mode 100644
new mode 100755