import numpy as np

PUs_states = [{"PU_MODE": "OFF","ploop_setpoint":0.0},{"PU_MODE": "OFF","ploop_setpoint":0.0},{"PU_MODE": "OFF","ploop_setpoint":0.0}] # data[i] is PU_i dictionnary

# Placeholder for CAN backend
class CANBackend:
    def __init__(self, eds_file=None):
        self.connected = False

    def connect(self, node_id: int, eds_path: str) -> bool:
        # Placeholder for connection logic
        self.connected = True
        return True

    def shutdown(self):
        self.connected = False

    def read_current_state(self,pu_number: int):
        # Placeholder for reading mode command
        return PUs_states[pu_number-1]["PU_MODE"]

    def send_thermal_loop_cleaning(self, mode: str):
        # Placeholder for thermal loop cleaning
        pass

    def send_state_command(self, state: str, pu_number : int, ploop_setpoint : float):
        # Placeholder for sending mode command
        PUs_states[pu_number-1] = {"PU_MODE": state, "ploop_setpoint":ploop_setpoint}

    def get_latest_data(self, pu_number=1, data={}):
        # Simulate getting the latest data with random values
        if pu_number ==1:
            return {
                "FM2": 1080,
                "FM3": 1080,
                "FM4": 1080,
                "FM5": 1080,
                "PS1": 6.2,
                "PS2": 6.2,
                "PS3": 6.2,
                "PS4": 6.2,
                "Cond": 1* np.random.random(),
                "MV02": round(100 * np.random.random(), 2),
                "MV02_sp": round(100 * np.random.random(), 2),
                "MV03": round(100 * np.random.random(), 2),
                "MV03_sp": round(100 * np.random.random(), 2),
                "MV05": round(100 * np.random.random(), 2),
                "MV05_sp": round(100 * np.random.random(), 2),
                "MV06": round(100 * np.random.random(), 2),
                "MV06_sp": round(100 * np.random.random(), 2),
                "MV07": round(100 * np.random.random(), 2),
                "MV07_sp": round(100 * np.random.random(), 2),
                "MV08": round(100 * np.random.random(), 2),
                "MV08_sp": round(100 * np.random.random(), 2),
            }
        else :
            return {
                "FM2": round(1000 * np.random.random(), 1),
                "FM3": round(1000 * np.random.random(), 1),
                "FM4": round(1000 * np.random.random(), 1),
                "FM5": round(1000 * np.random.random(), 1),
                "PS1": round(10 * np.random.random(), 2),
                "PS2": round(10 * np.random.random(), 2),
                "PS3": round(10 * np.random.random(), 2),
                "PS4": round(10 * np.random.random(), 2),
                "Cond": 1* np.random.random(),
                "MV02": round(100 * np.random.random(), 2),
                "MV02_sp": round(100 * np.random.random(), 2),
                "MV03": round(100 * np.random.random(), 2),
                "MV03_sp": round(100 * np.random.random(), 2),
                "MV05": round(100 * np.random.random(), 2),
                "MV05_sp": round(100 * np.random.random(), 2),
                "MV06": round(100 * np.random.random(), 2),
                "MV06_sp": round(100 * np.random.random(), 2),
                "MV07": round(100 * np.random.random(), 2),
                "MV07_sp": round(100 * np.random.random(), 2),
                "MV08": round(100 * np.random.random(), 2),
                "MV08_sp": round(100 * np.random.random(), 2),
            }