add

pet_hospital_sequence_diagram.puml

@@ -0,0 +1,64 @@
+@startuml
+!theme plain
+skinparam backgroundColor #FFFFFF
+skinparam sequence {
+  ArrowColor #333333
+  LifeLineBorderColor #777777
+  LifeLineBackgroundColor #FFFFFF
+  LifeLineBorderColor #AAAAAA
+  ParticipantBorderColor #AAAAAA
+  ParticipantBackgroundColor #F5F5F5
+  ParticipantFontColor #333333
+  ParticipantFontSize 12
+}
+
+title Pet Hospital Appointment Booking Process
+
+actor Customer as C
+participant "UserController" as UC
+participant "UserService" as US
+participant "AppointmentService" as AS
+participant "AppointmentMapper" as AM
+database "Database" as DB
+
+C -> UC: Login(username, password)
+UC -> US: login(username, password)
+US -> DB: SELECT user FROM user WHERE username=?
+activate US
+return AuthUser
+return JWT Token
+deactivate US
+
+C -> UC: View available pets
+UC -> US: getPetsByOwnerId(userId)
+activate US
+US -> DB: SELECT pets FROM pet WHERE ownerId=?
+return List<Pet>
+deactivate US
+
+C -> UC: Book appointment(Appointment)
+activate UC
+UC -> AS: book(Appointment)
+activate AS
+AS -> DB: INSERT appointment
+activate AM
+AM -> DB: Insert appointment record
+return Success
+deactivate AM
+return Appointment ID
+deactivate AS
+return Success Response
+deactivate UC
+
+C -> UC: View appointments
+UC -> AS: getByUserId(userId)
+activate AS
+AS -> DB: SELECT appointments FROM appointment WHERE userId=?
+return List<Appointment>
+deactivate AS
+return Appointment List
+deactivate UC
+
+note right: Customer receives confirmation\nof successful booking
+
+@enduml