med/media/management/commands/import_future_media.py

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from random import random
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from time import sleep
from django.core.management import BaseCommand
from media.forms import MediaAdminForm
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from media.models import Comic, FutureMedium, Manga, Novel
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class Command(BaseCommand):
def handle(self, *args, **options):
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for future_medium in FutureMedium.objects.all():
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isbn = future_medium.isbn
type_str = future_medium.type
if type_str == 'bd':
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cl = Comic
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elif type_str == 'manga':
cl = Manga
elif type_str == 'roman':
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cl = Novel
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else:
self.stderr.write(self.style.WARNING(
"Unknown medium type: {type}. Ignoring..."
.format(type=type_str)))
continue
if cl.objects.filter(isbn=isbn).exists():
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self.stderr.write(self.style.WARNING(
f"ISBN {isbn} for type {type_str} already exists, "
f"remove it"))
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future_medium.delete()
continue
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form = MediaAdminForm(instance=cl(),
data={"isbn": isbn, "_isbn": True, })
# Don't DDOS any website
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sleep(5 + (4 * random() - 1))
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try:
form.full_clean()
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if hasattr(form.instance, "subtitle") and \
not form.instance.subtitle:
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form.instance.subtitle = ""
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form.save()
future_medium.delete()
self.stdout.write(self.style.SUCCESS(
"Medium with ISBN {isbn} successfully imported"
.format(isbn=isbn)))
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except Exception as e:
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self.stderr.write(self.style.WARNING(
"An error occured while importing ISBN {isbn}: {error}"
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.format(isbn=isbn,
error=str(e.__class__) + "(" + str(e) + ")")))