Modify DeveloperGuide.md to include enhancements

docs/DeleteSequenceDiagram.puml

@@ -0,0 +1,45 @@
+@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 "deleteParser:DeleteCommandParser" as DeleteCommandParser LOGIC_COLOR
+participant "icNumber:IcNumber" as icNumber LOGIC_COLOR
+participant "delete:DeleteCommand" as DeleteCommand LOGIC_COLOR
+end box
+
+box Model MODEL_COLOR_T1
+participant ":Model" as Model MODEL_COLOR_T1
+end box
+
+[-> LogicManager : execute("delete i/T0000000A")]
+activate LogicManager
+
+LogicManager -> AddressBookParser : parseCommand("delete i/T0000000A")
+activate AddressBookParser
+
+create DeleteCommandParser
+AddressBookParser -> DeleteCommandParser
+activate DeleteCommandParser
+
+create IcNumber
+DeleteCommandParser -> IcNumber
+activate IcNumber
+IcNumber --> DeleteCommandParser:deleteCommand
+deactivate IcNumber
+
+create DeleteCommand
+DeleteCommandParser -> DeleteCommand:deleteCommand
+activate deleteCommand
+
+DeleteCommand --> DeleteCommandParser:deleteCommand
+deactivate DeleteCommand
+DeleteCommandParser --> AddressBookParser:parsedDeleteCommand
+deactivate DeleteCommandParser
+
+AddressBookParser --> LogicManager:parsedDeleteCommand
+deactivate AddressBookParser
+
+@enduml

docs/DeveloperGuide.md

@@ -620,24 +620,66 @@ testers are expected to do more *exploratory* testing.
 
 1. Deleting a patient while all patients are being shown
 
-    1. Prerequisites: List all patients using the `list` command. Multiple patients in the list.
+    1. Prerequisites: List all patients using the `list` command. Multiple patients in the list. 
+    2. Test case: `delete i/T0000000A`<br>
+       Expected: Will iterate through the list to search for Patient with matching IC Number and delete that patient
+       Timestamp in the status bar is updated. 
+    3. Test case: `delete I/T0000000B`<br>
+       Expected: If patient is not found or does not exist, no patient is deleted. 
+       Error details shown in the status message. Status bar remains the same. 
+    4. Other incorrect delete commands to try: `delete`, `delete x`, `...` (where x is larger than the list size)<br>
+       Expected: Similar to previous.
 
-    1. Test case: `delete 1`<br>
-       Expected: First contact is deleted from the list. Details of the deleted contact shown in the status message.
-       Timestamp in the status bar is updated.
+### Editing a patient
+1. Editing a patient's attributes that are specified based on the prefixes in the user inputs
+   1. Prerequisites: List all patients using the `list` command. Multiple patients in the list.
+   2. Test case: `edit i/T0000000A n/John Doe`<br>
+      Expected: Will iterate through the list to search for Patient with matching IC Number and edit that patient
+      Timestamp in the status bar is updated.
+   3. Test case: `edit i/T0000000A`
+      Expected: Will throw an exception if the fields to be edited are left empty.
+      Error details shown in the status message. Status bar remains the same.
+   4. Other incorrect edit commands to try: `edit`, `delete x`, `...`
+      Expected: Similar to previous.
+1. _{ more test cases …​ }_
 
-    1. Test case: `delete 0`<br>
-       Expected: No patient is deleted. Error details shown in the status message. Status bar remains the same.
+### Class `Birthday` and Testing
+1. Patient requires to have a birthday as a compulsory characteristic to be considered
+**Format:** A `Birthday` object can be initialized as follows:
 
-    1. Other incorrect delete commands to try: `delete`, `delete x`, `...` (where x is larger than the list size)<br>
-       Expected: Similar to previous.
+{
 
-1. _{ more test cases …​ }_
+    Birthday birthday = new Birthday("01/01/1991")
+
+}
+### Explanation:
+
+**string input** : User Input must be in the dd/MM/yyyy format to be parsed 
+correctly using LocalDateTime as implemented in the Birthday Class
+
+**incorrect inputs** : Inputs are checked for null and validity based on regex before initializing the Birthday object
+User Inputs which do not follow the correct format will receive an error message accordingly
+
+**tests** : Array of tests to account for various inputs that can be given by the user
+and checks on validity of the arguments given to prevent invocation errors
+
+**LocalDateTime** : LocalDateTime used instead of String as Age is a non-constant attribute of the Patient
+A patient's age constantly changes. Hence LocalDateTime offers flexibility to auto calculate a patient's age
+based on Birthday without requiring manual interferance as a potential extension.
 
 ### Saving data
 
 1. Dealing with missing/corrupted data files
 
     1. _{explain how to simulate a missing/corrupted file, and the expected behavior}_
+2. Saving Assigned Department to Storage
+### Explanation:
+**Storage**: Storage classes are to save the details of the patients upon exiting the app. While the basic attributes of the patients like IC Number, 
+Gender and all were being saved, complicated attributes like Assigned Department were not.
+
+**Assigned Department**: The patient will be assigned to a department when being admitted.
+
+**Enhancement**: Made changes to the storage and RecordBuilder classes and the tests
+to ensure the department assigned is saved as well.
 
 1. _{ more test cases …​ }_

docs/style.puml

@@ -0,0 +1,7 @@
+@startuml
+!define LOGIC_COLOR #3333C4
+!define LOGIC_COLOR_T2 #5252CE
+!define LOGIC_COLOR_T3 #1616B0
+!define LOGIC_COLOR_T4 #101086
+!define MODEL_COLOR_T1 #ff0000
+@enduml