Update Developer Guide to include Help Command

docs/DeveloperGuide.md

@@ -155,6 +155,31 @@ Classes used by multiple components are in the `seedu.addressbook.commons` packa
 
 This section describes some noteworthy details on how certain features are implemented.
 
+### Help command
+
+The help command is facilitated by the `HelpCommand` class. It allows users to view the usage instructions for the application.
+
+The following class diagram shows the relevant classes involved in the help command implementation:
+
+![HelpCommandClassDiagram](images/HelpClassDiagram.png)
+
+The `HelpCommand` class extends the `Command` interface and is responsible for executing the `help` command. It creates a `CommandResult` object with the help message to be displayed to the user.
+
+The following sequence diagram shows how the help command works:
+
+![HelpCommandSequenceDiagram](images/HelpSequenceDiagram.png)
+
+When the user executes the help command, the following steps occur:
+
+1. The `LogicManager` is called to execute the "help" command.
+2. The `AddressBookParser` parses the command and creates a new `HelpCommand` instance.
+3. The `LogicManager` calls the `execute()` method of the `HelpCommand`.
+4. The `HelpCommand` creates a new `CommandResult` with the help message.
+5. The `MainWindow` handles the help command and calls the `handleHelp()` method.
+6. The `ResultDisplay` is updated with the help message obtained from `HelpCommand.SHOWING_HELP_MESSAGE`.
+
+The `HelpCommand` class interacts with the `Logic` component and utilizes the `CommandResult` class to encapsulate the result of executing the `help` command. The `MainWindow` and `ResultDisplay` classes in the UI component are responsible for handling the display of the help message to the user.
+
 ### \[Proposed\] Undo/redo feature
 
 #### Proposed Implementation
@@ -321,7 +346,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 **MSS**
 
 1.  User requests to view contacts(UC01)
-2.  User requests to delete a specific person in the list 
+2.  User requests to delete a specific person in the list
 3.  AddressBook deletes the person
 
     Use case ends.
@@ -352,14 +377,14 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 10.  The software should work without requiring an installer.
 11.  The software should not depend on a specific remote server.
 12.  The GUI should work well for standard screen resolutions 1920x1080 and higher, and, for screen scales 100% and 125%.
-13.  The GUI should be usable (i.e., all functions can be used even if the user experience is not optimal) for, 
+13.  The GUI should be usable (i.e., all functions can be used even if the user experience is not optimal) for,
      resolutions 1280x720 and higher, and, for screen scales 150%.
 14.  The product should be available as a single JAR file of size 100MB or below.
 15.  The web documents saved should be a PDF file of size 15MB or below.
 16.  The final JAR/PDF files should not be bloated unnecessarily.
 17.  The DG and UG should be PDF-friendly, without any expandable panels, embedded videos, animated GIFs etc.
-18.  The use of third-party frameworks/libraries/services is allowed only if they, are free, open-source (this 
-     doesn't apply to services), and have permissive license terms; do not require any installation by the user; do 
+18.  The use of third-party frameworks/libraries/services is allowed only if they, are free, open-source (this
+     doesn't apply to services), and have permissive license terms; do not require any installation by the user; do
      not violate other constraints.
 19.  The product should process a user input command within 1 second.
 20.  The system must perform without failure in 95 percent of use cases during a month.

docs/UserGuide.md

@@ -1,22 +1,26 @@
 ---
 layout: page
 title: User Guide
+nav_order : 2
 ---
-Nursing Address Book (NAB) is a desktop application tailored for ward nurses, optimizing patient contact management via a Command Line Interface (CLI) while incorporating a Graphical User Interface (GUI) for ease of use. 
+# Nursing Address Book (NAB)
+Nursing Address Book (NAB) is a desktop application tailored for ward nurses, optimizing patient contact management via a Command Line Interface (CLI) while incorporating a Graphical User Interface (GUI) for ease of use.
 Designed for efficiency, NAB enables quick access to patient records, streamlined contact management, and simplified logging of care details, proving to be a valuable tool for fast typists and those who prefer the precision of CLI operations.
 
 ## Table of Contents
-* Quick Start
-* Features
-  * Adding a Patient
-  * Viewing Patients
-  * Editing a Patient's details
-  * Finding a Patient
-  * Deleting a Patient
-  * Clearing all Entries
-  * Exiting the Application
-* FAQ
-* Command Summary
+* [Quick Start](#quick-start)
+* [Features](#features)
+  * [Adding a Patient](#adding-a-patient-add)
+  * [Viewing Patients](#listing-all-patients--list)
+  * [Editing a Patient](#editing-a-patient--edit)
+  * [Finding a Patient](#locating-patients-by-name-find)
+  * [Deleting a Patient](#deleting-a-patient--delete)
+  * [Viewing Help](#viewing-help--help)
+  * [Clearing all Entries](#clearing-all-entries--clear)
+  * [Exiting the Application](#exiting-the-program--exit)
+* [FAQ](#faq)
+* [Command Summary](#command-summary)
+* [Troubleshooting](#troubleshooting)
 
 --------------------------------------------------------------------------------------------------------------------
 
@@ -28,7 +32,7 @@ Designed for efficiency, NAB enables quick access to patient records, streamline
 
 3. Copy the file to the folder you want to use as the _home folder_ for your AddressBook.
 
-4. Open a command terminal, For Windows users, search for `cmd` in the Start menu and run it as an administrator if necessary. Use the `cd` command to navigate to the folder where you placed the jar file. Run the application by executing `java -jar addressbook`.jar.<br>
+4. Open a command terminal, For Windows users, search for `cmd` in the Start menu and run it as an administrator if necessary. Use the `cd` command to navigate to the folder where you placed the jar file. Run the application by executing `java -jar nab.jar`.<br>
    Shortly, a GUI resembling the following should display, including some sample input to get you started:<br>
    ![Ui](images/Ui.png)
    <br>
@@ -72,7 +76,7 @@ Designed for efficiency, NAB enables quick access to patient records, streamline
 * If you are using a PDF version of this document, be careful when copying and pasting commands that span multiple lines as space characters surrounding line-breaks may be omitted when copied over to the application.
 </div>
 
-### Adding a person: `add`
+### Adding a patient: `add`
 
 Adds a new patient's information to the address book.
 
@@ -106,15 +110,15 @@ Tags: FallRisk, Diabetes
 You now have 1 patient(s) in your address book.
 ```
 
-### Listing all persons : `list`
+### Listing all patients : `list`
 
 Displays a list of all registered patients.
 
 Format: `list`, `list INDEX`
 
 * INDEX: Must be a positive integer not larger than the number of patients in the list.
 
-Example command: 
+Example command:
 
 `list`
 ```
@@ -124,7 +128,7 @@ Here are the details of the 2 patients in your contact book:
 2. Jane Doe
 ```
 
-Example command: 
+Example command:
 
 `list 2`
 ```
@@ -138,9 +142,9 @@ Ward: B3
 Tags: SevereAllergies
 ```
 
-### Editing a person : `edit`
+### Editing a patient : `edit`
 
-Edits an existing person in the address book.
+Edits an existing patient's details in the address book.
 
 Format: `edit INDEX [n\NAME] [ic\IC_NUMBER] [dob\DATE_OF_BIRTH] [ad\ADMISSION_DATE] [w\WARD] [t\TAG]…​`
 
@@ -168,7 +172,7 @@ Ward: A1
 Tags:
 ```
 
-### Locating persons by name: `find`
+### Locating patients by name: `find`
 
 Finds patients whose names contain any of the given keywords.
 
@@ -185,7 +189,7 @@ Examples:
 * `find John` returns `john` and `John Doe`
 * `find alex david` returns `Alex Yeoh`, `David Li`<br>
 
-### Deleting a person : `delete`
+### Deleting a patient : `delete`
 
 Deletes the specified patient from the address book.
 
@@ -208,6 +212,40 @@ Tags: SevereAllergies
 
 You now have 1 patient(s) in your contact book.
 ```
+### Viewing help : `help`
+
+Shows a message explaining the available commands and their usage.
+
+Format: `help`
+
+Output:
+
+```
+Here are the list of available commands:
+
+Add: add n\NAME ic\IC_NUMBER dob\DATE_OF_BIRTH ad\ADMISSION_DATE w\WARD [t\TAG]...
+   Example: add n\John Doe ic\T1234567P dob\01/01/2000 ad\25/03/2024 w\A1 t\Diabetes t\FallRisk
+
+Clear: clear 
+   Clears all entries from the address book.
+
+Delete: delete INDEX
+   Example: delete 3
+
+Edit: edit INDEX [n\NAME] [ic\IC_NUMBER] [dob\DATE_OF_BIRTH] [ad\ADMISSION_DATE] [w\WARD] [t\TAG]...  
+   Example: edit 1 ic\T0123456P t\
+
+Find: find KEYWORD [MORE_KEYWORDS]
+   Example: find John 
+
+List: list
+   Lists all patients.
+
+Exit: exit
+   Exits the application.
+
+For more detailed information on each command, please refer to the User Guide.
+```
 
 ### Clearing all entries : `clear`
 
@@ -265,3 +303,10 @@ Action | Format, Examples
 **Edit** | `edit INDEX [n\NAME] [ic\IC_NUMBER] [dob\DATE_OF_BIRTH] [ad\ADMISSION_DATE] [w\WARD] [t\TAG]…​`<br> e.g.,`edit 2 n\James Lee w\A2`
 **Find** | `find KEYWORD [MORE_KEYWORDS]`<br> e.g., `find James Jake`
 **List** | `list`
+**Help** | `help`
+
+--------------------------------------------------------------------------------------------------------------------
+
+## Troubleshooting
+
+1. **When using multiple screens**, if you move the application to a secondary screen, and later switch to using only the primary screen, the GUI will open off-screen. The remedy is to delete the `preferences.json` file created by the application before running the application again.

docs/diagrams/HelpClassDiagram.puml

@@ -0,0 +1,31 @@
+@startuml
+!include style.puml
+skinparam arrowThickness 1.1
+skinparam arrowColor LOGIC_COLOR
+skinparam classBackgroundColor LOGIC_COLOR
+
+Package Logic as LogicPackage <<Rectangle>>{
+Class "<<interface>>\nCommand" as Command
+Class "<<interface>>\nParser" as Parser
+Class "<<interface>>\nLogic" as Logic
+Class LogicManager
+Class HelpCommand
+Class CommandResult
+
+Logic -down-> Parser
+Logic -down-> Command
+Logic -right-> CommandResult
+LogicManager .up.|> Logic
+LogicManager -down-> Parser
+LogicManager -down-> Command
+
+HelpCommand .up.|> Command
+HelpCommand -right-> CommandResult
+
+Parser -[hidden]down-> HelpCommand
+}
+
+Class HiddenOutside #FFFFFF
+HiddenOutside .down.> Logic
+
+@enduml

docs/diagrams/HelpSequenceDiagram.puml

@@ -0,0 +1,66 @@
+@startuml
+!include style.puml
+skinparam ArrowFontStyle plain
+
+box Logic LOGIC_COLOR_T1
+participant ":LogicManager" as LogicManager LOGIC_COLOR
+participant ":AddressBookParser" as AddressBookParser LOGIC_COLOR
+participant "h:HelpCommand" as HelpCommand LOGIC_COLOR
+participant "r:CommandResult" as CommandResult LOGIC_COLOR
+end box
+
+box UI UI_COLOR_T1
+participant ":MainWindow" as MainWindow UI_COLOR
+participant ":ResultDisplay" as ResultDisplay UI_COLOR
+end box
+
+[-> LogicManager : execute("help")
+activate LogicManager
+
+LogicManager -> AddressBookParser : parseCommand("help")
+activate AddressBookParser
+
+create HelpCommand
+AddressBookParser -> HelpCommand
+activate HelpCommand
+
+HelpCommand --> AddressBookParser
+deactivate HelpCommand
+
+AddressBookParser --> LogicManager : h
+deactivate AddressBookParser
+
+LogicManager -> HelpCommand : execute()
+activate HelpCommand
+
+create CommandResult
+HelpCommand -> CommandResult
+activate CommandResult
+
+CommandResult --> HelpCommand
+deactivate CommandResult
+
+HelpCommand --> LogicManager : r
+deactivate HelpCommand
+
+LogicManager -> MainWindow : executeCommand("help")
+activate MainWindow
+
+MainWindow -> MainWindow : handleHelp()
+activate MainWindow
+
+MainWindow -> ResultDisplay : setFeedbackToUser(HelpCommand.SHOWING_HELP_MESSAGE)
+activate ResultDisplay
+
+ResultDisplay --> MainWindow
+deactivate ResultDisplay
+
+MainWindow --> MainWindow
+deactivate MainWindow
+
+MainWindow --> LogicManager : r
+deactivate MainWindow
+
+[<--LogicManager
+deactivate LogicManager
+@enduml