# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import os

from django.db import models, migrations
from django.core import serializers



fixture_dir = os.path.abspath(os.path.join(os.path.dirname(__file__),
                                           '../fixtures'))
fixture_filename = 'initial_data.json'


def load_fixture(apps, schema_editor):
    fixture_file = os.path.join(fixture_dir, fixture_filename)
    with open(fixture_file, 'rb') as fixture:
        objects = serializers.deserialize('json', fixture,
                                          ignorenonexistent=True)
        for obj in objects:
            obj.save()


def unload_fixture(apps, schema_editor):
    MyModel = apps.get_model("book", "Genre")
    MyModel.objects.all().delete()


class Migration(migrations.Migration):

    dependencies = [
        ('book', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(load_fixture, reverse_code=unload_fixture),
    ]