PlantUML Web Server

@startuml
participant "User"
participant Client

== Registration ==

Client -> "Social Auth Server": Authorization Code Request
activate "Social Auth Server"

"User" -> "Social Auth Server": Login & Consent

"Social Auth Server" --> Client: Authorization Code Response
deactivate "Social Auth Server"

Client -> "Social Auth Server": Exchange Code for Access Token
activate "Social Auth Server"

"Social Auth Server" --> Client: Access Token [+ Refresh Token]
deactivate "Social Auth Server"

Client -> "Social Resource Server": Call API with Access Token
activate "Social Resource Server"

"Social Resource Server" -> "Social Auth Server": Validate Access Token
activate "Social Auth Server"

"Social Auth Server" --> "Social Resource Server": Valid Access Token Response
deactivate "Social Auth Server"

"Social Resource Server" --> Client: Response with User Data
deactivate "Social Resource Server"
note right: This data is used to create/identify an internal account

Client -> "Internal Auth Server": Create User [if not exists]
activate "Internal Auth Server"

"Internal Auth Server" --> Client: Confirm User
deactivate "Internal Auth Server"

== Consume Service ==

Client -> "Internal Auth Server": Authorization Code Request
activate "Internal Auth Server"
note right: Requested Using Social Access Token

"Internal Auth Server" -> "Social Auth Server": Validate Access Token
activate "Social Auth Server"

"Social Auth Server" --> "Internal Auth Server": Valid Access Token Response
deactivate "Social Auth Server"

"Internal Auth Server" -> "Social Resource Server": Get data (like username)
activate "Social Resource Server"

"Social Resource Server" --> "Internal Auth Server": Return user data
deactivate "Social Resource Server"

"Internal Auth Server" --> Client: Authorization Code Response
deactivate "Internal Auth Server"

Client -> "Internal Auth Server": Exchange Code for Access Token
activate "Internal Auth Server"

"Internal Auth Server" --> Client: Access Token [+ Refresh Token]
deactivate "Internal Auth Server"

loop Internal microservice calls
	Client -> "Internal Resource Server": Call API with Access Token
	activate "Internal Resource Server"

"Internal Resource Server" -> "Internal Auth Server": Validate Access Token
	activate "Internal Auth Server"

"Internal Auth Server" --> "Internal Resource Server": Validate Access Token
	deactivate "Internal Auth Server"

"Internal Resource Server" --> Client: Response with Data
	deactivate "Internal Resource Server"
end
@enduml

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