import csv
import enum
from typing import Optional
import os.path

from config.object_ids import get_object_ids, PUS_SERVICE_17_ID
from tmtccmd.utility.logger import get_console_logger

LOGGER = get_console_logger()
DEFAULT_EVENTS_CSV_PATH = "config/events.csv"
__RETURNVALUE_DICT = None


class Severity(enum.IntEnum):
    INFO = (0,)
    LOW = (1,)
    MEDIUM = (2,)
    HIGH = 3


def str_to_severity(string: str) -> Optional[Severity]:
    if string == "INFO":
        return Severity.INFO
    elif string == "LOW":
        return Severity.LOW
    elif string == "MEDIUM":
        return Severity.MEDIUM
    elif string == "HIGH":
        return Severity.HIGH


class ReturnValueInfo:
    id: int = 0
    name: str = ""
    severity: str = ""
    info: str = ""
    file_location: str = ""


def handle_event_packet(
    object_id: bytes, event_id: int, param_1: int, param_2: int
) -> str:
    object_id = PUS_SERVICE_17_ID
    event_id = 2601
    global __RETURNVALUE_DICT
    if os.path.exists(DEFAULT_EVENTS_CSV_PATH) and __RETURNVALUE_DICT is None:
        __RETURNVALUE_DICT = dict()
        with open(DEFAULT_EVENTS_CSV_PATH) as csvfile:
            csv_reader = csv.reader(csvfile, delimiter=";")
            info = ReturnValueInfo()
            for row in csv_reader:
                info.id = int(row[0])
                info.name = row[2]
                info.severity = str_to_severity(row[3])
                info.info = row[4]
                info.file_location = row[5]
                __RETURNVALUE_DICT.update(
                    {info.id: info}
                )
    generic_event_string = ""
    additional_event_info = ""
    if __RETURNVALUE_DICT is not None:
        info = __RETURNVALUE_DICT.get(event_id)
        obj_ids = get_object_ids()
        obj_id_obj = obj_ids.get(object_id)
        if obj_id_obj is None:
            LOGGER.warning(f"Object ID 0x{object_id.hex()} has no name")
            obj_name = object_id.hex()
        else:
            obj_name = obj_id_obj.name
        generic_event_string = f"Object {obj_name} generated Event {event_id} | {info.name}"
        if info.info != "":
            additional_event_info = f" | Additional info: {info.info}"
    return generic_event_string + additional_event_info