#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Sep 25 08:22:20 2019

@author: tanya
"""

import os
import sys
import abc
sys.path.append(os.getcwd())


class ParseDbSchema(metaclass=abc.ABCMeta):
    '''
    '''
    def __init__(self, schema_paths: [list, str], log_file: str = None):
        '''
        '''
        from cdplib.log import Log

        self._log = Log(name="ParseDbSchema:", log_file=log_file)

        if isinstance(schema_paths, str):
            schema_paths = [schema_paths]

        for schema_path in schema_paths:
            if not os.path.isfile(schema_path):
                err = "Schema not found"
                self._log.error(err)
                raise FileNotFoundError(err)

    @abc.abstractmethod
    def get_fields(self) -> list:
        '''
        '''
        return

    @abc.abstractmethod
    def get_datetime_fields(self) -> list:
        '''
        '''
        return

    @abc.abstractmethod
    def get_python_types(self) -> list:
        '''
        '''
        return

    @abc.abstractmethod
    def get_default_values(self) -> list:
        '''
        '''
        return

    @abc.abstractmethod
    def get_allowed_values(self) -> list:
        '''
        '''
        return