forked from MarseyWorld/MarseyWorld
100 lines
4.4 KiB
Python
100 lines
4.4 KiB
Python
from typing import Any, Callable, Optional, Tuple, Union
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from sqlalchemy import func, Column
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from sqlalchemy.orm import scoped_session
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from files.helpers.const import LEADERBOARD_LIMIT
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from .badges import Badge
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from .marsey import Marsey
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from .user import User
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from .userblock import UserBlock
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class Leaderboard:
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"""
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Represents an request-context leaderboard. None of this is persisted yet,
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although this is probably a good idea to do at some point.
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"""
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all_users = None
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v_position = 0
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v_value = None
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user_func = None
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value_func = None
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def __init__(self, header_name:str, table_header_name:str, html_id:str, table_column_name:str,
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user_relative_url:Optional[str], query_function:Callable[..., Tuple[Any, Any, Any]],
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criteria, v:User, value_func:Optional[Callable[[User], Union[int, Column]]], db:scoped_session, users, limit=LEADERBOARD_LIMIT):
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self.header_name = header_name
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self.table_header_name = table_header_name
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self.html_id = html_id
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self.table_column_name = table_column_name
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self.user_relative_url = user_relative_url
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self.limit = limit
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lb = query_function(criteria, v, db, users, limit)
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self.all_users = lb[0]
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self.v_position = lb[1]
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self.v_value = lb[2]
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if value_func:
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self.user_func = lambda u:u
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self.value_func = value_func
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self.v_value = value_func(v)
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else:
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self.user_func = lambda u:u[0]
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self.value_func = lambda u: u[1] or 0
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@classmethod
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def get_simple_lb(cls, order_by, v:User, db:scoped_session, users, limit:int):
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leaderboard = users.order_by(order_by.desc()).limit(limit).all()
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position = None
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if v not in leaderboard:
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sq = db.query(User.id, func.rank().over(order_by=order_by.desc()).label("rank")).subquery()
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position = db.query(sq.c.id, sq.c.rank).filter(sq.c.id == v.id).limit(1).one()[1]
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return (leaderboard, position, None)
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@classmethod
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def count_and_label(cls, criteria):
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return func.count(criteria).label("count")
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@classmethod
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def rank_filtered_rank_label_by_desc(cls, criteria):
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return func.rank().over(order_by=func.count(criteria).desc()).label("rank")
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@classmethod
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def get_badge_marsey_lb(cls, lb_criteria, v:User, db:scoped_session, users:Any, limit):
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sq = db.query(lb_criteria, cls.count_and_label(lb_criteria), cls.rank_filtered_rank_label_by_desc(lb_criteria)).group_by(lb_criteria).subquery()
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sq_criteria = None
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if lb_criteria == Badge.user_id:
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sq_criteria = User.id == sq.c.user_id
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elif lb_criteria == Marsey.author_id:
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sq_criteria = User.id == sq.c.author_id
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else:
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raise ValueError("This leaderboard function only supports Badge.user_id and Marsey.author_id")
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leaderboard = db.query(User, sq.c.count).join(sq, sq_criteria).order_by(sq.c.count.desc())
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position = db.query(User.id, sq.c.rank, sq.c.count).join(sq, sq_criteria).filter(User.id == v.id).one_or_none()
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if position: position = (position[1], position[2])
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else: position = (leaderboard.count() + 1, 0)
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leaderboard = leaderboard.limit(limit).all()
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return (leaderboard, position[0], position[1])
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@classmethod
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def get_blockers_lb(cls, lb_criteria, v:User, db:scoped_session, users:Any, limit):
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if lb_criteria != UserBlock.target_id:
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raise ValueError("This leaderboard function only supports UserBlock.target_id")
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sq = db.query(lb_criteria, cls.count_and_label(lb_criteria)).group_by(lb_criteria).subquery()
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leaderboard = db.query(User, sq.c.count).join(User, User.id == sq.c.target_id).order_by(sq.c.count.desc())
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sq = db.query(lb_criteria, cls.count_and_label(lb_criteria), cls.rank_filtered_rank_label_by_desc(lb_criteria)).group_by(lb_criteria).subquery()
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position = db.query(sq.c.rank, sq.c.count).join(User, User.id == sq.c.target_id).filter(sq.c.target_id == v.id).limit(1).one_or_none()
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if not position: position = (leaderboard.count() + 1, 0)
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leaderboard = leaderboard.limit(limit).all()
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return (leaderboard, position[0], position[1])
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@classmethod
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def get_hat_lb(cls, lb_criteria, v:User, db:scoped_session, users:Any, limit):
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leaderboard = db.query(User.id, func.count(lb_criteria)).join(lb_criteria).group_by(User).order_by(func.count(lb_criteria).desc())
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sq = db.query(User.id, cls.count_and_label(lb_criteria), cls.rank_filtered_rank_label_by_desc(lb_criteria)).join(lb_criteria).group_by(User).subquery()
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position = db.query(sq.c.rank, sq.c.count).filter(sq.c.id == v.id).limit(1).one_or_none()
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if not position: position = (leaderboard.count() + 1, 0)
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leaderboard = leaderboard.limit(limit).all()
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return (leaderboard, position[0], position[1])
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