"""
SinglePanelDevice represents a device which can display a single picture, e.g. using LED technology.
The picture is represented either by a displaySign (a numeric value e.g. the index of the picture)
or a contentKey, which is usually the hash of the bitmap which shall be displayed.
"""
type SinglePanelDevice implements Host & Device {
    hostid: ID!
    """
    Per convention a uuid is used as hostname to identify devices if they do not have a unique hostname
    """
    host: String!
    deviceType: String
    hostgroups: [HostGroup!]
    name: String
    tags: JSONObject
    state: PanelState
}

type PanelState implements DeviceState {
    operational: OperationalDeviceData
    current: PanelCurrentState
}

type PanelCurrentState {
    values: PanelValues
}

type PanelValues {
    """
    Index of the bitmap which is displayed
    """
    contentIndex: Int
    """
    Hash of the bitmap which is displayed
    """
    contentKey: String
    """
    Text representation of what is displayed
    """
    contentText: String
}

"""
The FourPanelDevice is a panel which allows to define pictures in 4
subpanels, called TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT
"""
type FourPanelDevice implements Host & Device {
    hostid: ID!
    """
    Per convention a uuid is used as hostname to identify devices if they do not have a unique hostname
    """
    host: String!
    deviceType: String
    hostgroups: [HostGroup!]
    name: String
    tags: JSONObject
    state: FourPanelState
}

type FourPanelState implements DeviceState {
    operational: OperationalDeviceData
    current: FourPanelCurrentState
}

type FourPanelCurrentState {
    values: FourPanelValues
}

type FourPanelValues {
    TOP_LEFT: PanelValues
    TOP_RIGHT: PanelValues
    BOTTOM_LEFT: PanelValues
    BOTTOM_RIGHT: PanelValues
}