PlantUML Web Server

@startuml
skinparam {
  monochrome true
  shadowing false
  SequenceBoxBackgroundColor #ddd
  SequenceBoxBorderColor white
  ParticipantPadding 10
  BoxPadding 10
}
hide footbox

actor User as user
box "\nHosting"
  participant "寄付コンポーネント" as web
  participant StripeElement as el_stripe
  participant Browser as browser
end box
box "\n functions "
  control donate as fc_donate
end box
box "\napi.stripe.com"
  participant "/checkout" as st_checkout
  participant "/charge" as st_charge
end box

autonumber

user -> web : ページ取得
activate web
activate browser

web -> el_stripe : 利用環境のチェック
activate el_stripe

web <-- el_stripe : 決済可能

user <-- web : 「寄付」ボタンを表示

user -> el_stripe : 「寄付」ボタンのクリック

el_stripe -> browser: Payment Request API

user <-- browser : 決済ダイアログ、金額の表示

user -> browser : 決済情報の入力

el_stripe <-- browser : **カード情報**

el_stripe -> st_checkout : カード情報の送信
activate st_checkout

el_stripe <-- st_checkout : source_token
deactivate st_checkout