144 lines
4.6 KiB
Python
144 lines
4.6 KiB
Python
from copy import deepcopy
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from dataclasses import asdict
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from sqlalchemy import create_engine, delete, select, update
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from sqlalchemy.dialects.postgresql import insert
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from sqlalchemy.orm import Session, joinedload, selectinload
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from pfbudget.db.model import (
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Bank,
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Category,
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CategoryGroup,
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CategoryRule,
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CategorySchedule,
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Transaction,
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)
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# import logging
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# logging.basicConfig()
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# logging.getLogger("sqlalchemy.engine").setLevel(logging.INFO)
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class DbClient:
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"""
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General database client using sqlalchemy
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"""
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__sessions: list[Session]
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def __init__(self, url: str, echo=False) -> None:
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self._engine = create_engine(url, echo=echo)
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def get_transactions(self):
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"""¿Non-optimized? get_transactions, will load the entire Transaction"""
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with Session(self.engine) as session:
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stmt = select(Transaction).options(
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joinedload("*"), selectinload(Transaction.tags)
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)
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return session.scalars(stmt).all()
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def get_uncategorized(self):
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with Session(self.engine) as session:
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stmt = select(Transaction).where(~Transaction.category.has())
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return session.scalars(stmt).all()
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def get_categorized(self):
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with Session(self.engine) as session:
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stmt = select(Transaction).where(Transaction.category.has())
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return session.scalars(stmt).all()
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def insert_transactions(self, input: list[Transaction]):
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with Session(self.engine) as session:
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session.add_all(input)
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session.commit()
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def get_banks(self):
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with Session(self.engine) as session:
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stmt = select(Bank)
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return session.scalars(stmt).all()
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def get_nordigen_banks(self):
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with Session(self.engine) as session:
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stmt = select(Bank).where(Bank.nordigen.has())
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return session.scalars(stmt).all()
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@property
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def engine(self):
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return self._engine
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class ClientSession:
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def __init__(self, engine):
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self.__engine = engine
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def __enter__(self):
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self.__session = Session(self.__engine)
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return self
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def __exit__(self, exc_type, exc_value, exc_tb):
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self.commit()
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self.__session.close()
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def commit(self):
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self.__session.commit()
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def add(self, transactions: list[Transaction]):
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self.__session.add_all(transactions)
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def addcategories(self, category: list[Category]):
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self.__session.add_all(category)
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def removecategories(self, categories: list[Category]):
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stmt = delete(Category).where(
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Category.name.in_([cat.name for cat in categories])
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)
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self.__session.execute(stmt)
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def updategroup(self, categories: list[Category], group: CategoryGroup):
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stmt = (
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update(Category)
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.where(Category.name.in_([cat.name for cat in categories]))
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.values(group=group)
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)
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self.__session.execute(stmt)
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def updateschedules(self, schedules: list[CategorySchedule]):
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stmt = insert(CategorySchedule).values([asdict(s) for s in schedules])
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stmt = stmt.on_conflict_do_update(
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index_elements=[CategorySchedule.name],
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set_=dict(
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recurring=stmt.excluded.recurring,
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period=stmt.excluded.period,
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period_multiplier=stmt.excluded.period_multiplier,
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),
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)
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self.__session.execute(stmt)
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def addrules(self, rules: list[CategoryRule]):
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self.__session.add_all(rules)
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def removerules(self, ids: list[int]):
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stmt = delete(CategoryRule).where(
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CategoryRule.id.in_(ids)
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)
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self.__session.execute(stmt)
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def addgroups(self, groups: list[CategoryGroup]):
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self.__session.add_all(groups)
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def removegroups(self, groups: list[CategoryGroup]):
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stmt = delete(CategoryGroup).where(
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CategoryGroup.name.in_([grp.name for grp in groups])
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)
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self.__session.execute(stmt)
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def uncategorized(self) -> list[Transaction]:
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stmt = select(Transaction).where(~Transaction.category.has())
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return self.__session.scalars(stmt).all()
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def categories(self) -> list[Category]:
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stmt = select(Category)
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return self.__session.scalars(stmt).all()
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def session(self) -> ClientSession:
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return self.ClientSession(self.engine)
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