description: >
    "org.freedesktop.UPower.Device -- Device interface
     Defined at https://upower.freedesktop.org/docs/Device.html
     Objects implementing org.freedesktop.UPower.Device also implement the
     org.freedesktop.DBus.Introspectable and org.freedesktop.DBus.Properties
     interfaces. Unless otherwise noted, an empty string or the value 0 in a
     property on this interface means not set."

methods:
    - name: Refresh
      description: >
          "Refreshes the data collected from the power source. Callers need the
           org.freedesktop.upower.refresh-power-source authorization"

    - name: GetHistory
      description: >
          "Gets history for the power device that is persistent across
           reboots."
      parameters:
          - name: type
            type: string
            description: >
                "The type of history. Valid types are rate or charge."
          - name: timespan
            type: uint32
            description: >
                "The amount of data to return in seconds, or 0 for all."
          - name: resolution
            type: uint32
            description: >
                "The approximate number of points to return. A higher resolution is
                 more accurate, at the expense of plotting speed."
      returns:
          - name: data
            type: array[struct[uint32, double, uint32]]
            description: >
                "The history data for the power device, if the device supports
                 history. Data is ordered from the earliest in time, to the newest
                 data point. Each element contains the following members:
                   time: The time value in seconds from the gettimeofday() method.
                   value: The data value, for instance the rate in W or the charge
                          in %.
                   state: The state of the device, for instance charging or
                          discharging."

    - name: GetStatistics
      description: >
          "Gets statistics for the power device that may be interesting to show
           on a graph in the session."
      parameters:
          - name: type
            type: string
            description: >
                "The mode for the statistics. Valid types are charging or
                 discharging."
      returns:
          - name: data
            type: array[struct[double, double]]
            description: >
                "The statistics data for the power device. Each element contains the
                 following members:
                   value: The value of the percentage point, usually in seconds.
                   accuracy: The accuracy of the prediction in percent."

properties:
    - name: NativePath
      default: ""
      type: string
      description: >
          "OS specific native path of the power source. On Linux this is the
           sysfs path, for example
           /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT0. Is
           blank if the device is being driven by a user space driver."
    - name: Vendor
      default: ""
      type: string
      description: >
          "Name of the vendor of the battery."
    - name: Model
      default: ""
      type: string
      description: >
          "Name of the model of this battery."
    - name: Serial
      default: ""
      type: string
      description: >
          "Unique serial number of the battery."
    - name: UpdateTime
      default: 0
      type: uint64
      description: >
          "The point in time (seconds since the Epoch Jan 1, 1970 0:00 UTC)
           that data was read from the power source."
    - name: Type
      default: 0
      type: uint32
      description: >
          "Type of power source.
              0: Unknown
              1: Line Power
              2: Battery
              3: Ups
              4: Monitor
              5: Mouse
              6: Keyboard
              7: Pda
              8: Phone"
    - name: PowerSupply
      default: false
      type: boolean
      description: >
          "If the power device is used to supply the system. This would be set
           TRUE for laptop batteries and UPS devices, but set FALSE for wireless
           mice or PDAs."
    - name: HasHistory
      default: false
      type: boolean
      description: >
          "If the power device has history."
    - name: HasStatistics
      default: false
      type: boolean
      description: >
          "If the power device has statistics."
    - name: Online
      default: false
      type: boolean
      description: >
          "Whether power is currently being provided through line power. This
           property is only valid if the property type has the value
           'line-power'."
    - name: Energy
      default: 0.0
      type: double
      description: >
          "Amount of energy (measured in Wh) currently available in the power
           source. This property is only valid if the property type has the
           value 'battery'."
    - name: EnergyEmpty
      default: 0.0
      type: double
      description: >
          "Amount of energy (measured in Wh) in the power source when it's
           considered to be empty. This property is only valid if the property
           type has the value 'battery'."
    - name: EnergyFull
      default: 0.0
      type: double
      description: >
          "Amount of energy (measured in Wh) in the power source when it's
           considered full. This property is only valid if the property type
           has the value 'battery'."
    - name: EnergyFullDesign
      default: 0.0
      type: double
      description: >
          "Amount of energy (measured in Wh) the power source is designed to
           hold when it's considered full. This property is only valid if the
           property type has the value 'battery'."
    - name: EnergyRate
      default: 0.0
      type: double
      description: >
          "Amount of energy being drained from the source, measured in W. If
           positive, the source is being discharged, if negative it's being
           charged. This property is only valid if the property type has the
           value 'battery'."
    - name: Voltage
      default: 0.0
      type: double
      description: >
          "Voltage in the Cell or being recorded by the meter."
    - name: Luminosity
      default: 0.0
      type: double
      description: >
          "Luminosity being recorded by the meter."
    - name: TimeToEmpty
      default: 0
      type: int64
      description: >
          "Number of seconds until the power source is considered empty. Is set
           to 0 if unknown. This property is only valid if the property type
           has the value 'battery'."
    - name: TimeToFull
      default: 0
      type: int64
      description: >
          "Number of seconds until the power source is considered full. Is set
           to 0 if unknown. This property is only valid if the property type
           has the value 'battery'."
    - name: Percentage
      default: 0.0
      type: double
      description: >
          "The amount of energy left in the power source expressed as a
           percentage between 0 and 100. Typically this is the same as (energy -
           energy-empty) / (energy-full - energy-empty). However, some primitive
           power sources are capable of only reporting percentages and in this
           case the energy-* properties will be unset while this property is
           set. This property is only valid if the property type has the value
           'battery'."
    - name: Temperature
      default: 0.0
      type: double
      description: >
          "The temperature of the device in degrees Celsius. This property is
           only valid if the property type has the value 'battery'."
    - name: IsPresent
      default: false
      type: boolean
      description: >
          "If the power source is present in the bay. This field is required as
           some batteries are hot-removable, for example expensive UPS and most
           laptop batteries. This property is only valid if the property type
           has the value 'battery'."
    - name: State
      default: 0
      type: uint32
      description: >
          "The battery power state.
              0: Unknown
              1: Charging
              2: Discharging
              3: Empty
              4: Fully charged
              5: Pending charge
              6: Pending discharge
           This property is only valid if the property type has the value
           'battery'."
    - name: IsRechargeable
      default: false
      type: boolean
      description: >
          "If the power source is rechargeable. This property is only valid if
           the property type has the value 'battery'."
    - name: Capacity
      default: 0.0
      type: double
      description: >
          "The capacity of the power source expressed as a percentage between 0
           and 100. The capacity of the battery will reduce with age. A capacity
           value less than 75% is usually a sign that you should renew your
           battery. Typically this value is the same as (full-design / full) *
           100. However, some primitive power sources are not capable reporting
           capacity and in this case the capacity property will be unset. This
           property is only valid if the property type has the value 'battery'."
    - name: Technology
      default: 0
      type: uint32
      description: >
          "Technology used in the battery:
             0: Unknown
             1: Lithium ion
             2: Lithium polymer
             3: Lithium iron phosphate
             4: Lead acid
             5: Nickel cadmium
             6: Nickel metal hydride
           This property is only valid if the property type has the value
           'battery'."
    - name: WarningLevel
      default: 0
      type: uint32
      description: >
          "Warning level of the battery:
              0: Unknown
              1: None
              2: Discharging (only for UPSes)
              3: Low
              4: Critical
              5: Action"
    - name: BatteryLevel
      default: 0
      type: uint32
      description: >
          "Level of the battery:
              0: Unknown
              1: None (the battery does not use a coarse level of battery reporting)
              3: Low
              4: Critical
              6: Normal
              7: High
              8: Full"
    - name: IconName
      default: ""
      type: string
      description: >
          "An icon name, following the Icon Naming Specification"