# This Python file uses the following encoding: utf-8
import toml
import mysql.connector


class DbManager(object):
    __connection = None
    __con_param = None
    def __new__ (cls):

        if not hasattr(cls, "__instance"):
            cls.__instance = super().__new__(cls)
        return cls.__instance

    #def __init__ (self, dbconf, *args):
    @classmethod
    def connectDB(cls, dbconf):

        con_param = cls.__initializeConfig(dbconf)
        cls.__connection = mysql.connector.connect(**con_param)
        return cls.__connection

    def __initializeConfig(dbconf):

        con_param = {'user': dbconf['DB_USER'], 'password': dbconf['DB_PASS'], 'port': int (dbconf['DB_PORT']), 'host': dbconf['DB_HOST'], 'database': dbconf['DB_NAME']}

        return con_param