proposals-fix

resolvers/proposals.py

@@ -0,0 +1,48 @@
+
+
+from sqlalchemy import and_
+from orm.rating import is_negative, is_positive
+from orm.reaction import Reaction, ReactionKind
+from orm.shout import Shout
+from services.db import local_session
+from utils.diff import apply_diff, get_diff
+
+
+def handle_proposing(kind: ReactionKind, reply_to: int, shout_id: int):
+    with local_session() as session:
+        if is_positive(kind):
+            replied_reaction = session.query(Reaction).filter(Reaction.id == reply_to, Reaction.shout == shout_id).first()
+
+            if replied_reaction and replied_reaction.kind is ReactionKind.PROPOSE.value and replied_reaction.quote:
+                # patch all the proposals' quotes
+                proposals = (
+                    session.query(Reaction)
+                    .filter(
+                        and_(
+                            Reaction.shout == shout_id,
+                            Reaction.kind == ReactionKind.PROPOSE.value,
+                        )
+                    )
+                    .all()
+                )
+
+                # patch shout's body
+                shout = session.query(Shout).filter(Shout.id == shout_id).first()
+                body = replied_reaction.quote
+                Shout.update(shout, { body })
+                session.add(shout)
+                session.commit()
+
+                # реакция содержит цитату -> обновляются все предложения 
+                # (proposals) для соответствующего Shout.
+                for proposal in proposals:
+                    if proposal.quote:
+                        proposal_diff = get_diff(shout.body, proposal.quote)
+                        proposal_dict = proposal.dict()
+                        proposal_dict["quote"] = apply_diff(replied_reaction.quote, proposal_diff)
+                        Reaction.update(proposal, proposal_dict)
+                        session.add(proposal)
+
+        if is_negative(kind):
+            # TODO: rejection logic
+            pass