"""Provide utilities for reading prostar solar panels."""

from utilities import int_to_float16
from Channel import ModbusChannel


def charge_state(inp_state):
    """Map function for charge state."""
    states = {
        0: "Start",
        1: "Night Check",
        2: "Disconnect",
        3: "Night",
        4: "Fault",
        5: "Bulk",
        6: "Absorption",
        7: "Float",
        8: "Equalize"
    }
    if inp_state in range(0, 9):
        return states[inp_state]
    else:
        return inp_state


def array_faults(inp_array_faults):
    """Form a string for the array_faults."""
    fault_string = ""
    faults = {
        0: "Overcurrent Phase 1",
        1: "FETs Shorted",
        2: "Software Bug",
        3: "Battery HVD (High Voltage Disconnect)",
        4: "Array HVD (High Voltage Disconnect)",
        5: "EEPROM Setting Edit (reset required)",
        6: "RTS Shorted",
        7: "RTS was valid now disconnected",
        8: "Local temp. sensor failed",
        9: "Battery LVD (Low Voltage Disconect)",
        10: "DIP Switch Changed (excl. DIP 8)",
        11: "Processor Supply Fault"
    }

    bit_string = ("0" * 16 + "{0:b}".format(inp_array_faults))[-16:]
    for i in range(0, 12):
        if int(bit_string[i]) == 1:
            fault_string += faults[i] + ", "
    if fault_string:
        return fault_string[:-2]
    else:
        return "None"


CHANNELS = [
    ModbusChannel("adc_ia", 17, "REAL", 0.5, 3600, transformFn=int_to_float16),
    ModbusChannel("adc_vbterm", 18, "REAL", 0.5, 3600, transformFn=int_to_float16),
    ModbusChannel("adc_va", 19, "REAL", 0.5, 3600, transformFn=int_to_float16),
    ModbusChannel("adc_vl", 20, "REAL", 0.5, 3600, transformFn=int_to_float16),
    ModbusChannel("adc_il", 22, "REAL", 0.5, 3600, transformFn=int_to_float16),
    ModbusChannel("t_amb", 28, "REAL", 2.0, 3600, transformFn=int_to_float16),
    ModbusChannel("vb_min_daily", 65, "REAL", 2.0, 3600, transformFn=int_to_float16),
    ModbusChannel("vb_max_daily", 66, "REAL", 2.0, 3600, transformFn=int_to_float16),
    ModbusChannel('charge_state', 33, "STRING", 1, 3600, transformFn=charge_state),
    ModbusChannel('array_fault', 34, "STRING", 1, 3600, transformFn=array_faults)
]

NODEADDRESS = 21  # Default node address
BAUDRATE = 9600  # Default Baud Rate