from ..core.SyslabUnit import SyslabUnit
from ..core.datatypes.FlowBatteryState import FlowBatteryState
from ..core.datatypes.BattOpMode import BattOpMode

class Battery(SyslabUnit):
    """The Battery class represents a battery in SYSLAB.
    The Battery class is instantiated using a string with the unique name of the battery, ie. 'which'

    A full list of available batteries can be found by calling 'Battery.getAvailableBatteries()'

    Alternatively, the user may specify a host and port to connect to via the *host* and *port* arguments.
    """

    __BATTERIES = {
            'batt1': ('syslab-12.syslab.dk', '8080', 'batt1'),
            'battemu': ('syslab-31.syslab.dk', '8080', 'battemu'),
            'battfh1': ('syslab-s01.syslab.dk', '8080', 'battfh1'),
            'simlab-15': ('192.168.0.115', '8080', 'batt1'),
            'vbatt1': ('simlab-12', '8080', 'batt1'),
    }

    def __init__(self, which=None, host=None, port=None, unitname=None):

        baseurl = 'http://{host}:{port}/typebased_WebService_Battery/VRBBatteryWebService/{unit_name}/'
        super().__init__(
            baseurl=baseurl,
            which=which,
            units=self.__BATTERIES,
            host=host,
            port=port,
            unit_name=unitname,
            unit_type="Battery")

    def startBattery(self):
        return self._request_resource('startBattery', (), 'put')

    def stopBattery(self):
        return self._request_resource('stopBattery', (), 'put')

    def getActivePower(self):
        return self._request_resource('getACActivePower')

    def setActivePower(self, setPoint):

        P_UpperLimit = 15.0
        P_LowerLimit = -15.0

        return self._request_resource('setP', (max(P_LowerLimit, min(setPoint, P_UpperLimit))), 'put')

    def getReactivePower(self):
        return self._request_resource('getACReactivePower')

    def setReactivePower(self, setPoint):
        return self._request_resource('setQ', (setPoint), 'put')

    def getFrequency(self):
        return self._request_resource('getACFrequency')

    def getRemainingFloodTime(self):
        return min(self._request_resource('getRemainingFloodTime'), self._request_resource('getRemainingDrainTime'))

    def getCurrentOperatingMode(self):
        return self._request_resource('getCurrentOperatingMode')

    def getCurrentOperatingState(self):
        return self._request_resource('getCurrentOperatingState')

    def setOperatingMode(self, mode):
        return self._request_resource('setOperatingMode', (), 'put', BattOpMode(mode).parseToJSON())

    def getSOC(self):
        return self._request_resource('getSOC')

    def getRatedActivePower(self):
        return self._request_resource('getRatedP')

    def getRatedReactivePower(self):
        return self._request_resource('getRatedQ')

    def getName(self):
        return self._request_resource('getBatteryName')

    @staticmethod
    def getAvailableBatteries():
        return list(Battery.__BATTERIES.keys())