# -*- coding: utf-8 -*-

import re

from enum import Enum


class AoXmlTableEntry:
    class OperationType(Enum):
        update = 1
        delete = 0
        create = 2

        def __str__(self):
            return self._name_

    @classmethod
    def from_rar(cls, file_name, rar_factory=None, rar_info=None):
        # for rar
        return AoXmlTableEntry(file_name, lambda: rar_factory.open(rar_info))

    @classmethod
    def from_dir(cls, file_name, path):
        # for extracted into folder
        return AoXmlTableEntry(file_name, lambda: open(path + file_name, 'rb'))

    def __init__(self, file_name, lamda_open):
        matchings = re.search('^(AS_)(DEL_)*([A-Z]+)', file_name)

        self.table_name = matchings.group(3)
        self.operation_type = AoXmlTableEntry.OperationType(matchings.group(2) is None)

        self.lamda_open = lamda_open
        self.file_descriptor = None

    def open(self):
        if not self.file_descriptor:
            self.file_descriptor = self.lamda_open()

        return self.file_descriptor

    def close(self):
        self.file_descriptor.close()

    def __unicode__(self):
        return "Entry for {} table {}".format(self.operation_type, self.table_name)

    def __str__(self):
        return "Entry for {} table {}".format(self.operation_type, self.table_name)