154 lines
4.5 KiB
Python
154 lines
4.5 KiB
Python
import logging
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from dataclasses import dataclass
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from typing import Dict, Any, Optional
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from bson import ObjectId
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from libbot.cache.classes import Cache
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from pymongo.results import InsertOneResult
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from classes.errors.pycord_user import UserNotFoundError
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from modules.database import col_users
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logger = logging.getLogger(__name__)
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@dataclass
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class PycordUser:
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"""Dataclass of DB entry of a user"""
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__slots__ = ("_id", "id")
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_id: ObjectId
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id: int
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@classmethod
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async def from_id(
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cls, user_id: int, allow_creation: bool = True, cache: Optional[Cache] = None
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) -> "PycordUser":
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"""Find user in database and create new record if user does not exist.
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Args:
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user_id (int): User's Discord ID
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allow_creation (:obj:`bool`, optional): Create new user record if none found in the database
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cache (:obj:`Cache`, optional): Cache engine to get the cache from
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Returns:
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PycordUser: User object
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Raises:
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UserNotFoundError: User was not found and creation was not allowed
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"""
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if cache is not None:
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cached_entry: Dict[str, Any] | None = cache.get_json(f"user_{user_id}")
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if cached_entry is not None:
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return cls(**cached_entry)
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db_entry = await col_users.find_one({"id": user_id})
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if db_entry is None:
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if not allow_creation:
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raise UserNotFoundError(user_id)
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db_entry = PycordUser.get_defaults(user_id)
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insert_result: InsertOneResult = await col_users.insert_one(db_entry)
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db_entry["_id"] = insert_result.inserted_id
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if cache is not None:
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cache.set_json(f"user_{user_id}", db_entry)
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return cls(**db_entry)
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def _to_dict(self) -> Dict[str, Any]:
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return {
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"_id": self._id,
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"id": self.id,
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}
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async def _set(self, key: str, value: Any, cache: Optional[Cache] = None) -> None:
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"""Set attribute data and save it into the database.
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Args:
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key (str): Attribute to change
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value (Any): Value to set
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cache (:obj:`Cache`, optional): Cache engine to write the update into
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"""
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if not hasattr(self, key):
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raise AttributeError()
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setattr(self, key, value)
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await col_users.update_one(
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{"_id": self._id}, {"$set": {key: value}}, upsert=True
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)
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self._update_cache(cache)
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logger.info("Set attribute '%s' of user %s to '%s'", key, self.id, value)
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async def _remove(self, key: str, cache: Optional[Cache] = None) -> None:
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"""Remove attribute data and save it into the database.
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Args:
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key (str): Attribute to remove
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cache (:obj:`Cache`, optional): Cache engine to write the update into
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"""
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if not hasattr(self, key):
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raise AttributeError()
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default_value: Any = PycordUser.get_default_value(key)
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setattr(self, key, default_value)
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await col_users.update_one(
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{"_id": self._id}, {"$set": {key: default_value}}, upsert=True
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)
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self._update_cache(cache)
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logger.info("Removed attribute '%s' of user %s", key, self.id)
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def _get_cache_key(self) -> str:
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return f"user_{self.id}"
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def _update_cache(self, cache: Optional[Cache] = None) -> None:
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if cache is None:
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return
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user_dict: Dict[str, Any] = self._to_dict()
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if user_dict is not None:
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cache.set_json(self._get_cache_key(), user_dict)
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else:
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self._delete_cache(cache)
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def _delete_cache(self, cache: Optional[Cache] = None) -> None:
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if cache is None:
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return
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cache.delete(self._get_cache_key())
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@staticmethod
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def get_defaults(user_id: int | None = None) -> Dict[str, Any]:
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return {
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"id": user_id,
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}
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@staticmethod
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def get_default_value(key: str) -> Any:
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if key not in PycordUser.get_defaults():
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raise KeyError(f"There's no default value for key '{key}' in PycordUser")
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return PycordUser.get_defaults()[key]
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async def purge(self, cache: Optional[Cache] = None) -> None:
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"""Completely remove user data from database. Currently only removes the user record from users collection.
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Args:
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cache (:obj:`Cache`, optional): Cache engine to write the update into
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"""
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await col_users.delete_one({"_id": self._id})
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self._delete_cache(cache)
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