"""
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: DeviceConfig
    state: PanelState
}

"""
Represents the state of a single panel device.
"""
type PanelState implements DeviceState {
    """Operational data (telemetry)."""
    operational: OperationalDeviceData
    """Current display state."""
    current: PanelCurrentState
}

"""
Represents the current state of a panel.
"""
type PanelCurrentState {
    """The current values being displayed on the panel."""
    values: PanelValues
}

"""
Specific values displayed on a panel.
"""
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 {
    """Internal Zabbix ID of the device."""
    hostid: ID!
    """
    Per convention a uuid is used as hostname to identify devices if they do not have a unique hostname.
    """
    host: String!
    """Classification of the device."""
    deviceType: String
    """List of host groups this device belongs to."""
    hostgroups: [HostGroup!]
    """Visible name of the device."""
    name: String
    """Device configuration tags."""
    tags: DeviceConfig
    """State of the four-panel device."""
    state: FourPanelState
}

"""
Represents the state of a four-panel device.
"""
type FourPanelState implements DeviceState {
    """Operational data (telemetry)."""
    operational: OperationalDeviceData
    """Current state of all four panels."""
    current: FourPanelCurrentState
}

"""
Represents the combined current state of four panels.
"""
type FourPanelCurrentState {
    """The values for each of the four panels."""
    values: FourPanelValues
}

"""
Values for each of the four panels in a FourPanelDevice.
"""
type FourPanelValues {
    """State of the top-left panel."""
    TOP_LEFT: PanelValues
    """State of the top-right panel."""
    TOP_RIGHT: PanelValues
    """State of the bottom-left panel."""
    BOTTOM_LEFT: PanelValues
    """State of the bottom-right panel."""
    BOTTOM_RIGHT: PanelValues
}