95 lines
3.5 KiB
Python
95 lines
3.5 KiB
Python
from datetime import timedelta
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from django.core.cache import cache
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from django.db.models import Count, F
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from django.utils import timezone
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from loguru import logger
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from catalog.models import *
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from common.models import BaseJob, JobManager
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from journal.models import Comment, ShelfMember, q_item_in_category
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MAX_ITEMS_PER_PERIOD = 12
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MIN_MARKS = settings.MIN_MARKS_FOR_DISCOVER
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MAX_DAYS_FOR_PERIOD = 96
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MIN_DAYS_FOR_PERIOD = 6
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@JobManager.register
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class DiscoverGenerator(BaseJob):
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interval = timedelta(hours=1)
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def get_popular_marked_item_ids(self, category, days, exisiting_ids):
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item_ids = [
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m["item_id"]
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for m in ShelfMember.objects.filter(q_item_in_category(category))
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.filter(created_time__gt=timezone.now() - timedelta(days=days))
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.exclude(item_id__in=exisiting_ids)
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.values("item_id")
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.annotate(num=Count("item_id"))
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.filter(num__gte=MIN_MARKS)
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.order_by("-num")[:MAX_ITEMS_PER_PERIOD]
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]
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return item_ids
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def get_popular_commented_podcast_ids(self, days, exisiting_ids):
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return list(
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Comment.objects.filter(q_item_in_category(ItemCategory.Podcast))
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.filter(created_time__gt=timezone.now() - timedelta(days=days))
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.annotate(p=F("item__podcastepisode__program"))
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.filter(p__isnull=False)
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.exclude(p__in=exisiting_ids)
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.values("p")
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.annotate(num=Count("p"))
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.filter(num__gte=MIN_MARKS)
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.order_by("-num")
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.values_list("p", flat=True)[:MAX_ITEMS_PER_PERIOD]
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)
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def cleanup_shows(self, items):
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seasons = [i for i in items if i.__class__ == TVSeason]
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for season in seasons:
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if season.show in items:
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items.remove(season.show)
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return items
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def run(self):
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logger.info("Discover data update start.")
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cache_key = "public_gallery"
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gallery_categories = [
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ItemCategory.Book,
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ItemCategory.Movie,
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ItemCategory.TV,
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ItemCategory.Game,
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ItemCategory.Music,
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ItemCategory.Podcast,
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]
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gallery_list = []
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for category in gallery_categories:
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days = MAX_DAYS_FOR_PERIOD
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item_ids = []
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while days >= MIN_DAYS_FOR_PERIOD:
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ids = self.get_popular_marked_item_ids(category, days, item_ids)
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logger.info(f"Most marked {category} in last {days} days: {len(ids)}")
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item_ids = ids + item_ids
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days //= 2
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if category == ItemCategory.Podcast:
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days = MAX_DAYS_FOR_PERIOD // 4
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extra_ids = self.get_popular_commented_podcast_ids(days, item_ids)
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logger.info(
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f"Most commented podcast in last {days} days: {len(extra_ids)}"
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)
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item_ids = extra_ids + item_ids
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items = [Item.objects.get(pk=i) for i in item_ids]
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if category == ItemCategory.TV:
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items = self.cleanup_shows(items)
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gallery_list.append(
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{
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"name": "popular_" + category.value,
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"title": ""
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+ (category.label if category != ItemCategory.Book else "图书"),
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"items": items,
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}
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)
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cache.set(cache_key, gallery_list, timeout=None)
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logger.info("Discover data updated.")
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