9953c5763c
Generally standardizes the get_* helpers: - Adds type hinting. - Deduplicates block property addition. - Respects `graceful` in more contexts. - More resilient to invalid user input / less boilerplate necessary at call-sites.
355 lines
7.6 KiB
Python
355 lines
7.6 KiB
Python
from typing import Iterable, List, Optional, Type, Union
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from flask import g
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from sqlalchemy import and_, any_, or_
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from files.classes import *
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from files.helpers.const import AUTOJANNY_ID
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from files.helpers.strings import sql_ilike_clean
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def get_id(
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username:str,
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graceful:bool=False) -> Optional[int]:
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username = sql_ilike_clean(username)
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user = g.db.query(User.id).filter(
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or_(
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User.username.ilike(username),
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User.original_username.ilike(username)
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)
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).one_or_none()
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if not user:
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if graceful: return None
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abort(404)
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return user[0]
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def get_user(
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username:Optional[str],
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v:Optional[User]=None,
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graceful:bool=False,
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include_blocks:bool=False) -> Optional[User]:
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username = sql_ilike_clean(username)
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if not username:
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if graceful: return None
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abort(404)
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user = g.db.query(User).filter(
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or_(
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User.username.ilike(username),
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User.original_username.ilike(username)
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)
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).one_or_none()
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if not user:
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if graceful: return None
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abort(404)
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if v and include_blocks:
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user = _add_block_props(user, v)
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return user
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def get_users(
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usernames:Iterable[str],
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graceful:bool=False) -> List[User]:
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if not usernames: return []
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usernames = [ sql_ilike_clean(n) for n in usernames ]
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if not any(usernames):
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if graceful and len(usernames) == 0: return []
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abort(404)
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users = g.db.query(User).filter(
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or_(
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User.username == any_(usernames),
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User.original_username == any_(usernames)
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)
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).all()
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if len(users) != len(usernames) and not graceful:
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abort(404)
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return users
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def get_account(
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id:Union[str,int],
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v:Optional[User]=None,
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graceful:bool=False,
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include_blocks:bool=False) -> Optional[User]:
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try:
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id = int(id)
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except:
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if graceful: return None
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abort(404)
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user = g.db.get(User, id)
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if not user:
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if graceful: return None
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abort(404)
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if v and include_blocks:
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user = _add_block_props(user, v)
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return user
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def get_post(
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i:Union[str,int],
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v:Optional[User]=None,
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graceful:bool=False) -> Optional[Submission]:
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try: i = int(i)
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except:
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if graceful: return None
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abort(404)
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if v:
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vt = g.db.query(Vote).filter_by(
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user_id=v.id, submission_id=i).subquery()
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blocking = v.blocking.subquery()
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post = g.db.query(
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Submission,
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vt.c.vote_type,
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blocking.c.target_id,
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)
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post = post.filter(Submission.id == i
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).join(
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vt,
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vt.c.submission_id == Submission.id,
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isouter=True
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).join(
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blocking,
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blocking.c.target_id == Submission.author_id,
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isouter=True
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)
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post = post.one_or_none()
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if not post:
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if graceful: return None
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else: abort(404)
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x = post[0]
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x.voted = post[1] or 0
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x.is_blocking = post[2] or 0
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else:
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post = g.db.get(Submission, i)
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if not post:
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if graceful: return None
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else: abort(404)
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x = post
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return x
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def get_posts(
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pids:Iterable[int],
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v:Optional[User]=None) -> List[Submission]:
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if not pids: return []
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if v:
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vt = g.db.query(Vote.vote_type, Vote.submission_id).filter(
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Vote.submission_id.in_(pids),
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Vote.user_id==v.id
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).subquery()
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blocking = v.blocking.subquery()
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blocked = v.blocked.subquery()
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query = g.db.query(
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Submission,
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vt.c.vote_type,
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blocking.c.target_id,
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blocked.c.target_id,
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).filter(
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Submission.id.in_(pids)
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).join(
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vt, vt.c.submission_id == Submission.id, isouter=True
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).join(
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blocking, blocking.c.target_id == Submission.author_id, isouter=True
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).join(
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blocked, blocked.c.user_id == Submission.author_id, isouter=True
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)
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else:
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query = g.db.query(Submission).filter(Submission.id.in_(pids))
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results = query.all()
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if v:
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output = [p[0] for p in results]
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for i in range(len(output)):
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output[i].voted = results[i][1] or 0
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output[i].is_blocking = results[i][2] or 0
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output[i].is_blocked = results[i][3] or 0
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else:
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output = results
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return sorted(output, key=lambda x: pids.index(x.id))
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def get_comment(
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i:Union[str,int],
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v:Optional[User]=None,
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graceful:bool=False) -> Optional[Comment]:
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try: i = int(i)
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except:
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if graceful: return None
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abort(404)
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if not i:
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if graceful: return None
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else: abort(404)
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comment = g.db.get(Comment, i)
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if not comment:
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if graceful: return None
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else: abort(404)
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return _add_vote_and_block_props(comment, v, CommentVote)
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def get_comments(
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cids:Iterable[int],
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v:Optional[User]=None) -> List[Comment]:
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if not cids: return []
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if v:
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votes = g.db.query(CommentVote).filter_by(user_id=v.id).subquery()
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blocking = v.blocking.subquery()
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blocked = v.blocked.subquery()
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comments = g.db.query(
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Comment,
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votes.c.vote_type,
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blocking.c.target_id,
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blocked.c.target_id,
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).filter(Comment.id.in_(cids))
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if not (v and (v.shadowbanned or v.admin_level > 1)):
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comments = comments.join(User, User.id == Comment.author_id) \
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.filter(User.shadowbanned == None)
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comments = comments.join(
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votes,
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votes.c.comment_id == Comment.id,
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isouter=True
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).join(
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blocking,
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blocking.c.target_id == Comment.author_id,
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isouter=True
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).join(
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blocked,
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blocked.c.user_id == Comment.author_id,
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isouter=True
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).all()
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output = []
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for c in comments:
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comment = c[0]
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comment.voted = c[1] or 0
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comment.is_blocking = c[2] or 0
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comment.is_blocked = c[3] or 0
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output.append(comment)
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else:
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output = g.db.query(Comment) \
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.join(User, User.id == Comment.author_id) \
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.filter(User.shadowbanned == None, Comment.id.in_(cids)) \
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.all()
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return sorted(output, key=lambda x: cids.index(x.id))
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# TODO: This function was concisely inlined into posts.py in upstream.
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# Think it involved adding `tldextract` as a dependency.
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def get_domain(s:str) -> Optional[BannedDomain]:
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parts = s.split(".")
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domain_list = set()
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for i in range(len(parts)):
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new_domain = parts[i]
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for j in range(i + 1, len(parts)):
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new_domain += "." + parts[j]
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domain_list.add(new_domain)
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doms = g.db.query(BannedDomain) \
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.filter(BannedDomain.domain.in_(domain_list)).all()
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doms = [x for x in doms]
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if not doms:
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return None
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doms = sorted(doms, key=lambda x: len(x.domain), reverse=True)
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return doms[0]
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def _add_block_props(
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target:Union[Submission, Comment, User],
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v:Optional[User]):
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if not v: return target
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id = None
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if any(isinstance(target, cls) for cls in [Submission, Comment]):
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id = target.author_id
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elif isinstance(target, User):
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id = target.id
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else:
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raise TypeError("add_block_props only supports non-None "
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"submissions, comments, and users")
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if hasattr(target, 'is_blocking') and hasattr(target, 'is_blocked'):
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return target
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# users can't block or be blocked by themselves or AutoJanny
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if v.id == id or id == AUTOJANNY_ID:
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target.is_blocking = False
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target.is_blocked = False
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return target
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block = g.db.query(UserBlock).filter(
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or_(
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and_(
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UserBlock.user_id == v.id,
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UserBlock.target_id == id
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),
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and_(
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UserBlock.user_id == id,
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UserBlock.target_id == v.id
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)
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)
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).first()
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target.is_blocking = block and block.user_id == v.id
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target.is_blocked = block and block.target_id == v.id
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return target
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def _add_vote_props(
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target:Union[Submission, Comment],
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v:Optional[User],
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vote_cls:Union[Type[Vote], Type[CommentVote], None]):
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if hasattr(target, 'voted'): return target
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vt = g.db.query(vote_cls.vote_type).filter_by(user_id=v.id)
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if vote_cls is Vote:
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vt = vt.filter_by(submission_id=target.id)
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elif vote_cls is CommentVote:
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vt = vt.filter_by(comment_id=target.id)
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else:
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vt = None
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if vt: vt = vt.one_or_none()
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target.voted = vt.vote_type if vt else 0
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return target
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def _add_vote_and_block_props(
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target:Union[Submission, Comment],
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v:Optional[User],
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vote_cls:Union[Type[Vote], Type[CommentVote], None]):
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if not v: return target
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target = _add_block_props(target, v)
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return _add_vote_props(target, v, vote_cls)
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