@startuml Sequence Diagram - Sprites
'Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
'SPDX-License-Identifier: MIT (For details, see https://github.com/awslabs/aws-icons-for-plantuml/blob/master/LICENSE)

' Uncomment the line below for "dark mode" styling
'!$AWS_DARK = true

!define AWSPuml https://raw.githubusercontent.com/awslabs/aws-icons-for-plantuml/v23.1/dist
!include AWSPuml/AWSCommon.puml
!include AWSPuml/Compute/all.puml
!include AWSPuml/NetworkingContentDelivery/APIGateway.puml
!include AWSPuml/General/Internetalt1.puml
!include AWSPuml/Database/DynamoDB.puml

'Hide the bottom boxes / Use filled triangle arrowheads
hide footbox
skinparam style strictuml

actor User as user
'Instead of using ...Participant(), native sprites can be used in monochrome
participant "<$APIGateway>\nCredit Card System\nAll methods are POST" as api
'Or skinned with colors (pulled from each sprite file) and with different layout of sprite to text
participant "<color:$AWS_COLOR_SMILE><$Lambda></color>\nAuthorizeCard\nReturns status" as lambda
participant "PaymentTransactions\n<color:$AWS_COLOR_NEBULA><$DynamoDB></color>\nsortkey=transaction_id+token" as db
participant "Authorizer\nReturns status and token\n<color:$AWS_FG_COLOR><$Internetalt1></color>" as processor

user -> api: Process transaction\nPOST /prod/process
api -> lambda: Invokes lambda with cardholder details
lambda -> processor: Submit via API token\ncard number, expiry, CID
processor -> processor: Validate and create token
processor -> lambda: Returns status code and token
lambda -> db: PUT transaction id, token
lambda -> api: Returns\nstatus code, transaction id
api -> user: Returns status code
@enduml