from django.utils.timezone import datetime, timedelta from django.utils import timezone import json import requests import lxml.html from django.conf import settings from django.contrib.auth import get_user_model from django.db import models from django.db.models.functions import ExtractWeek, ExtractYear from django.urls import reverse from django.utils.timesince import timesince User = get_user_model() class Settings(models.Model): created = models.DateTimeField(auto_now_add=True) modified = models.DateTimeField(auto_now=True) key = models.CharField(max_length=1024, unique=True) value = models.JSONField(default=dict, editable=False) class Item(models.Model): created = models.DateTimeField(auto_now_add=True) modified = models.DateTimeField(auto_now=True) title = models.CharField(max_length=1024) url = models.CharField(max_length=1024, unique=True) description = models.TextField(default="", blank=True, editable=False) published = models.DateTimeField(default=timezone.now, null=True, blank=True) announced = models.DateTimeField(null=True, default=None, blank=True, editable=False) data = models.JSONField(default=dict, editable=False) user = models.ForeignKey(User, null=True, related_name='items', on_delete=models.CASCADE) def save(self, *args, **kwargs): if self.url and not self.data.get("url") == self.url: self.update_data() super().save(*args, **kwargs) def __str__(self): return '%s (%s)' % (self.title, self.url) def public_comments(self): return self.comments.exclude(published=None) def public_comments_json(self): comments = [] for comment in self.public_comments(): comments.append({ "name": comment.name, "date": comment.date, "text": comment.text, }) return json.dumps(comments) @classmethod def public(cls, now=None): if now is None: now = timezone.make_aware(datetime.now(), timezone.get_default_timezone()) qs = cls.objects.exclude(published=None).filter(published__lte=now).order_by('-published') cal = now.date().isocalendar() monday = now.date() - timedelta(days=now.date().isocalendar().weekday - 1) monday = timezone.datetime(monday.year, monday.month, monday.day, tzinfo=now.tzinfo) first_post = qs.filter(published__gt=monday).first() if first_post and first_post.published < now: week = qs.filter(published__gt=monday) elif not first_post: while qs.exists() and not first_post: monday = monday - timedelta(days=7) first_post = qs.filter(published__gt=monday).first() week = qs.filter(published__gt=monday) else: last_monday = monday - timedelta(days=7) week = qs.filter(published__gt=last_monday) archive = (qs .exclude(id__in=week) .annotate(year=ExtractYear('published')) .annotate(week=ExtractWeek('published')) ) return week, archive def get_absolute_url(self): return reverse('item', kwargs={'id': self.id}) def update_data(self): self.data.update(self.parse_url()) def parse_url(self): content = requests.get(self.url).text doc = lxml.html.fromstring(content) data = {} for meta in doc.cssselect('meta'): key = meta.attrib.get('name') if not key: key = meta.attrib.get('property') value = meta.attrib.get('content') if key and value: if key in ('viewport', ): continue key = key.replace('og:', '') data[key] = value data["url"] = self.url return data class Comment(models.Model): created = models.DateTimeField(auto_now_add=True) modified = models.DateTimeField(auto_now=True) item = models.ForeignKey(Item, related_name='comments', on_delete=models.CASCADE) text = models.TextField(default="") name = models.CharField(max_length=1024, blank=True) email = models.CharField(max_length=1024, blank=True) user = models.ForeignKey(User, null=True, related_name='comments', on_delete=models.CASCADE, blank=True) session_key = models.CharField(max_length=60, null=True, default=None, blank=True, editable=False) data = models.JSONField(default=dict, editable=False) published = models.DateTimeField(null=True, default=None, blank=True) class Meta: permissions = [ ("can_post_comment", "Can post comments without moderation") ] @property def is_published(self): return bool(self.published) def __str__(self): return '%s: %s' % (self.item, self.user) def save(self, *args, **kwargs): if self.user: self.name = self.user.username self.email = self.user.email super().save(*args, **kwargs) @property def date(self): now = timezone.now() difference = now - self.created if difference <= timedelta(minutes=1): return "just now" return '%(time)s ago' % {'time': timesince(self.created).split(', ')[0]} return self.created.strftime('%B %d, %Y at %H:%M') return self.created.strftime('%Y-%m-%d %H:%M') def json(self): data = {} if not self.user: data['name'] = '%s (guest)' % self.name else: data['name'] = self.name data['date'] = self.date data['text'] = self.text data['id'] = self.id data['published'] = self.is_published return data