from ..physical.Dumpload import Dumpload
from datetime import datetime


class WaterBoiler(Dumpload):

    def __init__(self, which='localhost'):
        super().__init__(which)

        self.energy_state = 10 # kWh
        self.energy_max = 15
        self.time = datetime.now()
        self.loss = 1 # kW

    def step_sim(self):
        time_now = datetime.now()
        time_delta = (time_now - self.time).total_seconds()
        power = self.getActivePower().value
        self.energy_state += (power - self.loss)/3600*time_delta
        self.time = time_now

    def getSOC(self):
        self.step_sim()
        if self.energy_state > self.energy_max:
            self.energy_state = self.energy_max
        elif self.energy_state < 0:
            self.energy_state = 0.0
        return self.energy_state