@startuml Folder Structure

package "MongoDB Collection: folders" {

    object "Root Folder" as root {
        _id = "root_abc123"
        name = "__root__"
        parents = []
        objects = []
        owner_id = "123456"
        owner_name = "user@example.com"
        root = true
    }

    object "Folder: Office" as office {
        _id = "folder_office_xyz"
        name = "Office"
        parents = ["root_abc123"]
        objects = [
            {object_type: "camera", object_id: "cam_1"},
            {object_type: "camera", object_id: "cam_2"}
        ]
        owner_id = "123456"
    }

    object "Folder: Warehouse" as warehouse {
        _id = "folder_warehouse_qwe"
        name = "Warehouse"
        parents = ["root_abc123"]
        objects = [
            {object_type: "camera", object_id: "cam_3"},
            {object_type: "server", object_id: "srv_1"}
        ]
        owner_id = "123456"
    }

    object "Subfolder: Entrance" as entrance {
        _id = "folder_entrance_asd"
        name = "Entrance"
        parents = ["root_abc123", "folder_office_xyz"]
        objects = [
            {object_type: "camera", object_id: "cam_4"}
        ]
        owner_id = "123456"
    }
}

object "User" as user {
    _id = 123456
    login = "user@example.com"
    root_folder = "root_abc123"
}

user --> root : root_folder
root --> office : subfolder
root --> warehouse : subfolder
office --> entrance : subfolder

note right of root
    При создании пользователя
    создается пустая root_folder

    objects = []
    parents = []
    root = true
end note

note right of office
    Пользователь может создавать
    папки для организации камер:
    - Офис
    - Склад
    - Парковка
    и т.д.
end note

note right of entrance
    Поддерживается вложенность:
    parents = [root, office]

    Уровень вложенности:
    level = len(parents) = 2
end note

@enduml