259 lines
8.0 KiB
Python
259 lines
8.0 KiB
Python
from datetime import datetime, timedelta, timezone
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from sqlalchemy.orm import aliased, joinedload
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from sqlalchemy.sql.expression import and_, asc, case, desc, func, nulls_last, select
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from auth.authenticate import login_required
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from auth.credentials import AuthCredentials
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from base.exceptions import ObjectNotExist
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from base.orm import local_session
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from base.resolvers import query
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from orm import TopicFollower
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from orm.reaction import Reaction, ReactionKind
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from orm.shout import Shout, ShoutAuthor, ShoutTopic
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from orm.user import AuthorFollower
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def add_stat_columns(q):
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aliased_reaction = aliased(Reaction)
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q = q.outerjoin(aliased_reaction).add_columns(
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func.sum(aliased_reaction.id).label("reacted_stat"),
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func.sum(case((aliased_reaction.kind == ReactionKind.COMMENT, 1), else_=0)).label(
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"commented_stat"
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),
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func.sum(
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case(
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# do not count comments' reactions
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(aliased_reaction.replyTo.is_not(None), 0),
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(aliased_reaction.kind == ReactionKind.AGREE, 1),
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(aliased_reaction.kind == ReactionKind.DISAGREE, -1),
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(aliased_reaction.kind == ReactionKind.PROOF, 1),
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(aliased_reaction.kind == ReactionKind.DISPROOF, -1),
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(aliased_reaction.kind == ReactionKind.ACCEPT, 1),
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(aliased_reaction.kind == ReactionKind.REJECT, -1),
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(aliased_reaction.kind == ReactionKind.LIKE, 1),
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(aliased_reaction.kind == ReactionKind.DISLIKE, -1),
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else_=0,
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)
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).label("rating_stat"),
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func.max(
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case(
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(aliased_reaction.kind != ReactionKind.COMMENT, None),
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else_=aliased_reaction.createdAt,
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)
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).label("last_comment"),
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)
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return q
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def apply_filters(q, filters, user_id=None): # noqa: C901
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if filters.get("reacted") and user_id:
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q.join(Reaction, Reaction.createdBy == user_id)
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v = filters.get("visibility")
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if v == "public":
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q = q.filter(Shout.visibility == filters.get("visibility"))
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if v == "community":
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q = q.filter(Shout.visibility.in_(["public", "community"]))
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if filters.get("layout"):
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q = q.filter(Shout.layout == filters.get("layout"))
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if filters.get("excludeLayout"):
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q = q.filter(Shout.layout != filters.get("excludeLayout"))
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if filters.get("author"):
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q = q.filter(Shout.authors.any(slug=filters.get("author")))
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if filters.get("topic"):
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q = q.filter(Shout.topics.any(slug=filters.get("topic")))
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if filters.get("title"):
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q = q.filter(Shout.title.ilike(f'%{filters.get("title")}%'))
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if filters.get("body"):
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q = q.filter(Shout.body.ilike(f'%{filters.get("body")}%s'))
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if filters.get("days"):
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before = datetime.now(tz=timezone.utc) - timedelta(days=int(filters.get("days")) or 30)
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q = q.filter(Shout.createdAt > before)
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return q
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@query.field("loadShout")
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async def load_shout(_, info, slug=None, shout_id=None):
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with local_session() as session:
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q = select(Shout).options(
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joinedload(Shout.authors),
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joinedload(Shout.topics),
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)
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q = add_stat_columns(q)
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if slug is not None:
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q = q.filter(Shout.slug == slug)
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if shout_id is not None:
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q = q.filter(Shout.id == shout_id)
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q = q.filter(Shout.deletedAt.is_(None)).group_by(Shout.id)
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try:
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[shout, reacted_stat, commented_stat, rating_stat, last_comment] = session.execute(
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q
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).first()
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shout.stat = {
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"viewed": shout.views,
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"reacted": reacted_stat,
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"commented": commented_stat,
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"rating": rating_stat,
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}
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for author_caption in session.query(ShoutAuthor).join(Shout).where(Shout.slug == slug):
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for author in shout.authors:
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if author.id == author_caption.user:
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author.caption = author_caption.caption
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return shout
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except Exception:
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raise ObjectNotExist("Slug was not found: %s" % slug)
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@query.field("loadShouts")
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async def load_shouts_by(_, info, options):
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"""
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:param options: {
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filters: {
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layout: 'music',
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excludeLayout: 'article',
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visibility: "public",
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author: 'discours',
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topic: 'culture',
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title: 'something',
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body: 'something else',
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days: 30
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}
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offset: 0
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limit: 50
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order_by: 'createdAt' | 'commented' | 'reacted' | 'rating'
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order_by_desc: true
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}
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:return: Shout[]
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"""
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q = (
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select(Shout)
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.options(
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joinedload(Shout.authors),
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joinedload(Shout.topics),
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)
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.where(and_(Shout.deletedAt.is_(None), Shout.layout.is_not(None)))
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)
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q = add_stat_columns(q)
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auth: AuthCredentials = info.context["request"].auth
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q = apply_filters(q, options.get("filters", {}), auth.user_id)
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order_by = options.get("order_by", Shout.publishedAt)
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query_order_by = desc(order_by) if options.get("order_by_desc", True) else asc(order_by)
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offset = options.get("offset", 0)
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limit = options.get("limit", 10)
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q = q.group_by(Shout.id).order_by(nulls_last(query_order_by)).limit(limit).offset(offset)
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shouts = []
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with local_session() as session:
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shouts_map = {}
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for [shout, reacted_stat, commented_stat, rating_stat, last_comment] in session.execute(
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q
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).unique():
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shouts.append(shout)
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shout.stat = {
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"viewed": shout.views,
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"reacted": reacted_stat,
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"commented": commented_stat,
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"rating": rating_stat,
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}
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shouts_map[shout.id] = shout
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return shouts
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@query.field("loadDrafts")
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@login_required
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async def get_drafts(_, info):
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auth: AuthCredentials = info.context["request"].auth
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user_id = auth.user_id
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q = (
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select(Shout)
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.options(
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joinedload(Shout.authors),
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joinedload(Shout.topics),
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)
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.where(and_(Shout.deletedAt.is_(None), Shout.createdBy == user_id))
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)
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q = q.group_by(Shout.id)
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shouts = []
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with local_session() as session:
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for [shout] in session.execute(q).unique():
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shouts.append(shout)
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return shouts
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@query.field("myFeed")
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@login_required
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async def get_my_feed(_, info, options):
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auth: AuthCredentials = info.context["request"].auth
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user_id = auth.user_id
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subquery = (
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select(Shout.id)
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.join(ShoutAuthor)
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.join(AuthorFollower, AuthorFollower.follower == user_id)
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.join(ShoutTopic)
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.join(TopicFollower, TopicFollower.follower == user_id)
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)
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q = (
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select(Shout)
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.options(
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joinedload(Shout.authors),
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joinedload(Shout.topics),
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)
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.where(
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and_(Shout.publishedAt.is_not(None), Shout.deletedAt.is_(None), Shout.id.in_(subquery))
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)
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)
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q = add_stat_columns(q)
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q = apply_filters(q, options.get("filters", {}), user_id)
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order_by = options.get("order_by", Shout.publishedAt)
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query_order_by = desc(order_by) if options.get("order_by_desc", True) else asc(order_by)
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offset = options.get("offset", 0)
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limit = options.get("limit", 10)
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q = q.group_by(Shout.id).order_by(nulls_last(query_order_by)).limit(limit).offset(offset)
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shouts = []
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with local_session() as session:
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shouts_map = {}
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for [shout, reacted_stat, commented_stat, rating_stat, last_comment] in session.execute(
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q
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).unique():
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shouts.append(shout)
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shout.stat = {
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"viewed": shout.views,
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"reacted": reacted_stat,
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"commented": commented_stat,
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"rating": rating_stat,
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}
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shouts_map[shout.id] = shout
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return shouts
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