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import logging
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import re
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from datetime import datetime, timedelta, date
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from datetime import time as dtime
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from django.core.exceptions import PermissionDenied
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from django.db import models, transaction
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from django.dispatch import Signal
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from django.shortcuts import redirect
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from django.utils import timezone
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import boards
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from boards import utils
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from boards.abstracts.exceptions import ArchiveException
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from boards.abstracts.constants import REGEX_TAGS, REGEX_REPLY
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from boards.mdx_neboard import Parser
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from boards.models import Attachment
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from boards.models.attachment import StickerPack, AttachmentSticker
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from boards.models.user import Ban
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__author__ = 'neko259'
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POSTS_PER_DAY_RANGE = 7
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NO_IP = '0.0.0.0'
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post_import_deps = Signal()
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FORM_TEXT = 'text'
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FORM_TAGS = 'tags'
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REFLINK_PREFIX = '>>'
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class PostManager(models.Manager):
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@transaction.atomic
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def create_post(self, title: str, text: str, files=[], thread=None,
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ip=NO_IP, tags: list=None,
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tripcode='', monochrome=False, images=[],
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file_urls=[], stickerpack=False):
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"""
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Creates new post
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"""
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if thread is not None and thread.is_archived():
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raise ArchiveException('Cannot post into an archived thread')
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if not utils.is_anonymous_mode():
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is_banned = Ban.objects.filter(ip=ip).exists()
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else:
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is_banned = False
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if is_banned:
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raise PermissionDenied()
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if not tags:
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tags = []
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posting_time = timezone.now()
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new_thread = False
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if not thread:
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thread = boards.models.thread.Thread.objects.create(
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bump_time=posting_time, last_edit_time=posting_time,
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monochrome=monochrome, stickerpack=stickerpack)
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list(map(thread.tags.add, tags))
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new_thread = True
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pre_text = Parser().preparse(text)
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post = self.create(title=title,
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text=pre_text,
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pub_time=posting_time,
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poster_ip=ip,
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thread=thread,
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last_edit_time=posting_time,
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tripcode=tripcode,
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opening=new_thread)
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logger = logging.getLogger('boards.post.create')
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logger.info('Created post [{}] with text [{}] by {}'.format(post,
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post.get_raw_text(), post.poster_ip))
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for file in files:
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self._add_file_to_post(file, post)
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for image in images:
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post.attachments.add(image)
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for file_url in file_urls:
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post.attachments.add(Attachment.objects.create_from_url(file_url))
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post.set_global_id()
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# Thread needs to be bumped only when the post is already created
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if not new_thread:
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thread.last_edit_time = posting_time
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thread.bump()
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thread.save()
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self._create_stickers(post)
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return post
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def delete_posts_by_ip(self, ip):
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"""
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Deletes all posts of the author with same IP
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"""
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posts = self.filter(poster_ip=ip)
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for post in posts:
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post.delete()
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@utils.cached_result()
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def get_posts_per_day(self) -> float:
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"""
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Gets average count of posts per day for the last 7 days
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"""
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day_end = date.today()
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day_start = day_end - timedelta(POSTS_PER_DAY_RANGE)
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day_time_start = timezone.make_aware(datetime.combine(
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day_start, dtime()), timezone.get_current_timezone())
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day_time_end = timezone.make_aware(datetime.combine(
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day_end, dtime()), timezone.get_current_timezone())
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posts_per_period = float(self.filter(
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pub_time__lte=day_time_end,
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pub_time__gte=day_time_start).count())
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ppd = posts_per_period / POSTS_PER_DAY_RANGE
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return ppd
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def get_post_per_days(self, days) -> int:
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day_end = date.today() + timedelta(1)
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day_start = day_end - timedelta(days)
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day_time_start = timezone.make_aware(datetime.combine(
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day_start, dtime()), timezone.get_current_timezone())
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day_time_end = timezone.make_aware(datetime.combine(
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day_end, dtime()), timezone.get_current_timezone())
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return self.filter(
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pub_time__lte=day_time_end,
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pub_time__gte=day_time_start).count()
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@transaction.atomic
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def import_post(self, title: str, text: str, pub_time: str, global_id,
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opening_post=None, tags=list(), files=list(),
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file_urls=list(), tripcode=None, last_edit_time=None):
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is_opening = opening_post is None
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if is_opening:
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thread = boards.models.thread.Thread.objects.create(
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bump_time=pub_time, last_edit_time=pub_time)
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list(map(thread.tags.add, tags))
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else:
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thread = opening_post.get_thread()
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post = self.create(title=title,
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text=text,
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pub_time=pub_time,
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poster_ip=NO_IP,
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last_edit_time=last_edit_time or pub_time,
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global_id=global_id,
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opening=is_opening,
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thread=thread,
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tripcode=tripcode)
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for file in files:
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self._add_file_to_post(file, post)
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for file_url in file_urls:
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post.attachments.add(Attachment.objects.create_from_url(file_url))
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url_to_post = '[post]{}[/post]'.format(str(global_id))
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replies = self.filter(text__contains=url_to_post)
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for reply in replies:
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post_import_deps.send(reply)
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@transaction.atomic
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def update_post(self, post, title: str, text: str, pub_time: str,
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tags=list(), files=list(), file_urls=list(), tripcode=None):
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post.title = title
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post.text = text
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post.pub_time = pub_time
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post.tripcode = tripcode
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post.save()
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post.clear_cache()
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post.attachments.clear()
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for file in files:
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self._add_file_to_post(file, post)
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for file_url in file_urls:
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post.attachments.add(Attachment.objects.create_from_url(file_url))
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thread = post.get_thread()
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thread.tags.clear()
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list(map(thread.tags.add, tags))
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def create_from_form(self, request, form, opening_post, html_response=True):
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ip = utils.get_client_ip(request)
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data = form.cleaned_data
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title = form.get_title()
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text = data[FORM_TEXT]
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files = form.get_files()
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file_urls = form.get_file_urls()
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images = form.get_images()
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text = self._remove_invalid_links(text)
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if opening_post:
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post_thread = opening_post.get_thread()
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monochrome = False
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stickerpack = False
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tags = []
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else:
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tags = data[FORM_TAGS]
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monochrome = form.is_monochrome()
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stickerpack = form.is_stickerpack()
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post_thread = None
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post = self.create_post(title=title, text=text, files=files,
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thread=post_thread, ip=ip,
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tripcode=form.get_tripcode(),
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images=images, file_urls=file_urls,
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monochrome=monochrome,
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stickerpack=stickerpack, tags=tags)
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if form.is_subscribe():
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from boards.abstracts.settingsmanager import get_settings_manager
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settings_manager = get_settings_manager(request)
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settings_manager.add_or_read_fav_thread(
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post.get_thread().get_opening_post())
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if html_response:
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return redirect(post.get_absolute_url())
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else:
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return post
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def _add_file_to_post(self, file, post):
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post.attachments.add(Attachment.objects.create_with_hash(file))
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def _create_stickers(self, post):
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thread = post.get_thread()
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stickerpack_thread = thread.is_stickerpack()
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if stickerpack_thread:
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logger = logging.getLogger('boards.stickers')
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if not post.is_opening():
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has_title = len(post.title) > 0
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has_one_attachment = post.attachments.count() == 1
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opening_post = thread.get_opening_post()
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valid_name = REGEX_TAGS.match(post.title)
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if has_title and has_one_attachment and valid_name:
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existing_sticker = AttachmentSticker.objects.filter(
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name=post.get_title()).first()
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attachment = post.attachments.first()
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if existing_sticker:
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existing_sticker.attachment = attachment
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existing_sticker.save()
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logger.info('Updated sticker {} with new attachment'.format(existing_sticker))
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else:
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try:
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stickerpack = StickerPack.objects.get(
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name=opening_post.get_title(), tripcode=post.tripcode)
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sticker = AttachmentSticker.objects.create(
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stickerpack=stickerpack, name=post.get_title(),
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attachment=attachment)
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logger.info('Created sticker {}'.format(sticker))
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except StickerPack.DoesNotExist:
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pass
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else:
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stickerpack, created = StickerPack.objects.get_or_create(
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name=post.get_title(), tripcode=post.tripcode)
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if created:
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logger.info('Created stickerpack {}'.format(stickerpack))
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def _remove_invalid_links(self, text):
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"""
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Replace invalid links in posts so that they won't be parsed.
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Invalid links are links to non-existent posts
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"""
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for reply_number in re.finditer(REGEX_REPLY, text):
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post_id = reply_number.group(1)
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post = self.filter(id=post_id)
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if not post.exists():
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text = text.replace(REFLINK_PREFIX + post_id, post_id)
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return text
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