import datetime

import pytz
from oscar.core.loading import get_model

from ecommerce.courses.models import Course
from ecommerce.invoice.models import Invoice

Order = get_model('order', 'Order')
OrderLine = get_model('order', 'Line')
Product = get_model('catalogue', 'Product')
ProductAttributeValue = get_model('catalogue', 'ProductAttributeValue')
Refund = get_model('refund', 'Refund')
RefundLine = get_model('refund', 'RefundLine')
StockRecord = get_model('partner', 'StockRecord')

cutoff = datetime.datetime(2017, 1, 1, 0, 0, 0, 0, pytz.UTC)
models = (Order, OrderLine, Refund, RefundLine, ProductAttributeValue, Product, StockRecord, Course, Invoice,)

for model in models:
    print('{}: {}'.format(model.__name__, model.history.filter(history_date__lt=cutoff).count()))

# for model in models:
#     model.history.filter(history_date__lt=cutoff).delete()