from common.models import *

import abc

import json

from .Device import DeviceController

'''
    Device controller for PLC.
    This class must implement set, get and do functions (DeviceController is an abstract)
'''

class PLCController(DeviceController):

    def __init__(self):

        super().__init__("PLC")

    def sendCommand(self, dict_list):
        command = { "command" : dict_list }

        return self.sendMessage(json.dumps(command))
        # EP sert à rien
        #return ""

    def sendCommandWithAnswer(self, dict_list):

        # Send commmand TO plc

        status = self.sendCommand(dict_list)

        #EP added

        if not status:
            return "NOT_SET1"

        # Read result FROM plc

        return (self.blockAndReadBytes(4096))

    def switch_lights(self, command) :
        command = command.split()
        if len(command) > 2:
            if command[2] == "ON":
                return self.sendCommandWithAnswer([{"name": "SWITCH LINES ON"}])
            elif command[2] == "OFF":
                return self.sendCommandWithAnswer([{"name": "SWITCH LINES OFF"}])
            else:
                return "Invalid command"


    def manage_shutters(self, command):
        command = command.split()
        if len(command) == 2:
            if command[0] == "CLOSE":
                return self.sendCommandWithAnswer([{"name": "CLOSE SHUTTERS"}])
            elif command[0] == "OPEN":
                return self.sendCommandWithAnswer([{"name": "OPEN SHUTTERS"}])
            else:
                return "Invalid command"
        return "Invalid command"

    def getList(self):
        return self.sendCommandWithAnswer([{"name":"LIST"}])

    def getStatus(self, command=""):
        command = command.split()
        if (len(command) > 2):
            I = 0     #emplacement ou gérer la commande a envoyer pour le statut d'un capteur en particulier

        s = self.sendCommandWithAnswer([{"name":"STATUS"}])
        return s

    '''
        Value is a string ("on" or "off"), current is a decimal value ("0.231")
    '''
    def setLampFlatCagire(self, value, current):
        return self.sendCommand([{"name":"LAMP_FLAT_CAGIRE", "value":value, "current":current}])