@startuml CrowdSubscription Create Sequence

actor "client" as U
participant "CrowdSubscription" as CS
participant "API5" as API
participant "MongoDB\ncrowd_subscription" as DB

U -> CS: create(email, camera_id, email_enabled=True)

CS -> API: get_api_client()
activate API

CS -> API: User.get_id(login=email)
API --> CS: user_id

CS -> API: Camera({'id': camera_id}).get(projection)
API --> CS: camera data
deactivate API

CS -> DB: find_one(проверка на существующую подписку)
DB --> CS: existing_doc or None

alt Подписка уже есть
    CS --> U: raise CrowdSubscriptionAlreadyExists
else Подписки нет
    CS -> CS: create document
    
    note right of CS
        {
            owner_id: camera['owner_id']
            created_at: time.time()
            subscriber_id: user_id
            subscriber_login: email
            telegram_confirmed: False
            camera_id: camera_id
            email_enabled: email_enabled
        }
    end note

    
    CS -> DB: insert_with_random_id(doc)
    DB --> CS: inserted_doc
    
    CS --> U: CrowdSubscription(data=doc)
end

@enduml