restructured,inbox-removed
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399
resolvers/reactions.py
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399
resolvers/reactions.py
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from datetime import datetime, timedelta, timezone
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from sqlalchemy import and_, asc, desc, select, text, func, case
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from sqlalchemy.orm import aliased
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from auth.authenticate import login_required
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from auth.credentials import AuthCredentials
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from services.exceptions import OperationNotAllowed
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from services.db import local_session
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from services.schema import mutation, query
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from orm.reaction import Reaction, ReactionKind
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from orm.shout import Shout, ShoutReactionsFollower
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from orm.user import User
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def add_reaction_stat_columns(q):
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aliased_reaction = aliased(Reaction)
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q = q.outerjoin(
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aliased_reaction, Reaction.id == aliased_reaction.replyTo
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).add_columns(
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func.sum(aliased_reaction.id).label("reacted_stat"),
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func.sum(case((aliased_reaction.body.is_not(None), 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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(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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)
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return q
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def reactions_follow(user_id, shout_id: int, auto=False):
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try:
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with local_session() as session:
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shout = session.query(Shout).where(Shout.id == shout_id).one()
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following = (
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session.query(ShoutReactionsFollower)
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.where(
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and_(
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ShoutReactionsFollower.follower == user_id,
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ShoutReactionsFollower.shout == shout.id,
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)
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)
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.first()
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)
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if not following:
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following = ShoutReactionsFollower.create(
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follower=user_id, shout=shout.id, auto=auto
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)
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session.add(following)
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session.commit()
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return True
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except:
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return False
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def reactions_unfollow(user_id: int, shout_id: int):
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try:
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with local_session() as session:
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shout = session.query(Shout).where(Shout.id == shout_id).one()
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following = (
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session.query(ShoutReactionsFollower)
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.where(
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and_(
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ShoutReactionsFollower.follower == user_id,
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ShoutReactionsFollower.shout == shout.id,
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)
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)
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.first()
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)
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if following:
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session.delete(following)
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session.commit()
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return True
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except:
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pass
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return False
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def is_published_author(session, user_id):
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"""checks if user has at least one publication"""
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return (
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session.query(Shout)
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.where(Shout.authors.contains(user_id))
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.filter(and_(Shout.publishedAt.is_not(None), Shout.deletedAt.is_(None)))
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.count()
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> 0
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)
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def check_to_publish(session, user_id, reaction):
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"""set shout to public if publicated approvers amount > 4"""
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if not reaction.replyTo and reaction.kind in [
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ReactionKind.ACCEPT,
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ReactionKind.LIKE,
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ReactionKind.PROOF,
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]:
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if is_published_author(user_id):
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# now count how many approvers are voted already
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approvers_reactions = (
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session.query(Reaction).where(Reaction.shout == reaction.shout).all()
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)
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approvers = [
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user_id,
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]
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for ar in approvers_reactions:
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a = ar.createdBy
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if is_published_author(session, a):
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approvers.append(a)
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if len(approvers) > 4:
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return True
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return False
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def check_to_hide(session, user_id, reaction):
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"""hides any shout if 20% of reactions are negative"""
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if not reaction.replyTo and reaction.kind in [
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ReactionKind.REJECT,
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ReactionKind.DISLIKE,
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ReactionKind.DISPROOF,
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]:
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# if is_published_author(user):
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approvers_reactions = (
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session.query(Reaction).where(Reaction.shout == reaction.shout).all()
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)
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rejects = 0
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for r in approvers_reactions:
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if r.kind in [
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ReactionKind.REJECT,
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ReactionKind.DISLIKE,
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ReactionKind.DISPROOF,
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]:
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rejects += 1
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if len(approvers_reactions) / rejects < 5:
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return True
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return False
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def set_published(session, shout_id):
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s = session.query(Shout).where(Shout.id == shout_id).first()
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s.publishedAt = datetime.now(tz=timezone.utc)
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s.visibility = text("public")
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session.add(s)
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session.commit()
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def set_hidden(session, shout_id):
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s = session.query(Shout).where(Shout.id == shout_id).first()
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s.visibility = text("community")
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session.add(s)
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session.commit()
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@mutation.field("createReaction")
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@login_required
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async def create_reaction(_, info, reaction):
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auth: AuthCredentials = info.context["request"].auth
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reaction["createdBy"] = auth.user_id
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rdict = {}
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with local_session() as session:
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shout = session.query(Shout).where(Shout.id == reaction["shout"]).one()
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author = session.query(User).where(User.id == auth.user_id).one()
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if reaction["kind"] in [ReactionKind.DISLIKE.name, ReactionKind.LIKE.name]:
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existing_reaction = (
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session.query(Reaction)
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.where(
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and_(
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Reaction.shout == reaction["shout"],
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Reaction.createdBy == auth.user_id,
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Reaction.kind == reaction["kind"],
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Reaction.replyTo == reaction.get("replyTo"),
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)
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)
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.first()
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)
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if existing_reaction is not None:
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raise OperationNotAllowed("You can't vote twice")
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opposite_reaction_kind = (
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ReactionKind.DISLIKE
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if reaction["kind"] == ReactionKind.LIKE.name
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else ReactionKind.LIKE
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)
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opposite_reaction = (
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session.query(Reaction)
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.where(
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and_(
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Reaction.shout == reaction["shout"],
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Reaction.createdBy == auth.user_id,
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Reaction.kind == opposite_reaction_kind,
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Reaction.replyTo == reaction.get("replyTo"),
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)
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)
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.first()
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)
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if opposite_reaction is not None:
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session.delete(opposite_reaction)
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r = Reaction.create(**reaction)
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# Proposal accepting logix
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if (
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r.replyTo is not None
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and r.kind == ReactionKind.ACCEPT
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and auth.user_id in shout.dict()["authors"]
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):
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replied_reaction = (
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session.query(Reaction).where(Reaction.id == r.replyTo).first()
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)
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if replied_reaction and replied_reaction.kind == ReactionKind.PROPOSE:
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if replied_reaction.range:
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old_body = shout.body
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start, end = replied_reaction.range.split(":")
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start = int(start)
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end = int(end)
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new_body = old_body[:start] + replied_reaction.body + old_body[end:]
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shout.body = new_body
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# TODO: update git version control
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session.add(r)
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session.commit()
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rdict = r.dict()
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rdict["shout"] = shout.dict()
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rdict["createdBy"] = author.dict()
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# self-regulation mechanics
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if check_to_hide(session, auth.user_id, r):
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set_hidden(session, r.shout)
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elif check_to_publish(session, auth.user_id, r):
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set_published(session, r.shout)
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try:
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reactions_follow(auth.user_id, reaction["shout"], True)
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except Exception as e:
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print(f"[resolvers.reactions] error on reactions autofollowing: {e}")
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rdict["stat"] = {"commented": 0, "reacted": 0, "rating": 0}
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return {"reaction": rdict}
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@mutation.field("updateReaction")
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@login_required
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async def update_reaction(_, info, id, reaction={}):
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auth: AuthCredentials = info.context["request"].auth
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with local_session() as session:
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user = session.query(User).where(User.id == auth.user_id).first()
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q = select(Reaction).filter(Reaction.id == id)
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q = add_reaction_stat_columns(q)
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q = q.group_by(Reaction.id)
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[r, reacted_stat, commented_stat, rating_stat] = (
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session.execute(q).unique().one()
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)
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if not r:
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return {"error": "invalid reaction id"}
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if r.createdBy != user.id:
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return {"error": "access denied"}
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r.body = reaction["body"]
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r.updatedAt = datetime.now(tz=timezone.utc)
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if r.kind != reaction["kind"]:
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# NOTE: change mind detection can be here
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pass
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if reaction.get("range"):
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r.range = reaction.get("range")
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session.commit()
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r.stat = {
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"commented": commented_stat,
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"reacted": reacted_stat,
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"rating": rating_stat,
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}
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return {"reaction": r}
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@mutation.field("deleteReaction")
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@login_required
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async def delete_reaction(_, info, id):
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auth: AuthCredentials = info.context["request"].auth
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with local_session() as session:
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r = session.query(Reaction).filter(Reaction.id == id).first()
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if not r:
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return {"error": "invalid reaction id"}
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if r.createdBy != auth.user_id:
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return {"error": "access denied"}
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if r.kind in [ReactionKind.LIKE, ReactionKind.DISLIKE]:
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session.delete(r)
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else:
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r.deletedAt = datetime.now(tz=timezone.utc)
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session.commit()
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return {"reaction": r}
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@query.field("loadReactionsBy")
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async def load_reactions_by(_, _info, by, limit=50, offset=0):
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"""
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:param by: {
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:shout - filter by slug
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:shouts - filer by shout slug list
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:createdBy - to filter by author
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:topic - to filter by topic
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:search - to search by reactions' body
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:comment - true if body.length > 0
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:days - a number of days ago
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:sort - a fieldname to sort desc by default
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}
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:param limit: int amount of shouts
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:param offset: int offset in this order
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:return: Reaction[]
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"""
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q = (
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select(Reaction, User, Shout)
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.join(User, Reaction.createdBy == User.id)
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.join(Shout, Reaction.shout == Shout.id)
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)
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if by.get("shout"):
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q = q.filter(Shout.slug == by["shout"])
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elif by.get("shouts"):
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q = q.filter(Shout.slug.in_(by["shouts"]))
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if by.get("createdBy"):
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q = q.filter(User.slug == by.get("createdBy"))
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if by.get("topic"):
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# TODO: check
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q = q.filter(Shout.topics.contains(by["topic"]))
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if by.get("comment"):
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q = q.filter(func.length(Reaction.body) > 0)
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if len(by.get("search", "")) > 2:
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q = q.filter(Reaction.body.ilike(f'%{by["body"]}%'))
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if by.get("days"):
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after = datetime.now(tz=timezone.utc) - timedelta(days=int(by["days"]) or 30)
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q = q.filter(Reaction.createdAt > after)
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order_way = asc if by.get("sort", "").startswith("-") else desc
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order_field = by.get("sort", "").replace("-", "") or Reaction.createdAt
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q = q.group_by(Reaction.id, User.id, Shout.id).order_by(order_way(order_field))
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q = add_reaction_stat_columns(q)
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q = q.where(Reaction.deletedAt.is_(None))
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q = q.limit(limit).offset(offset)
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reactions = []
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with local_session() as session:
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for [
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reaction,
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user,
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shout,
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reacted_stat,
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commented_stat,
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rating_stat,
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] in session.execute(q):
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reaction.createdBy = user
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reaction.shout = shout
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reaction.stat = {
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"rating": rating_stat,
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"commented": commented_stat,
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"reacted": reacted_stat,
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}
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reaction.kind = reaction.kind.name
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reactions.append(reaction)
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# ?
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if by.get("stat"):
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reactions.sort(lambda r: r.stat.get(by["stat"]) or r.createdAt)
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return reactions
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