Luís Murta
7fe5b6bd32
Sometimes transctions are directly related to one another w/o being of an equal value, e.g. someone pays for the meal w/ the CC, and everyone pays him/her. Clear leftover __repr__ methods in the model classes, the dataclass decorator will create those automatically.
138 lines
4.4 KiB
Python
138 lines
4.4 KiB
Python
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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Link,
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Tag,
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TagRule,
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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, rows: list):
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self.__session.add_all(rows)
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def remove_by_name(self, type: Category | Tag | Transaction, rows: list):
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stmt = delete(type).where(type.name.in_([row.name for row in rows]))
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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 remove_by_id(self, type: CategoryRule | TagRule, ids: list[int]):
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stmt = delete(type).where(type.id.in_(ids))
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self.__session.execute(stmt)
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def updaterules(self, rules: list[dict]):
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self.__session.execute(update(CategoryRule), rules)
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def remove_links(self, original, links: list):
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stmt = delete(Link).where(Link.original == original, Link.link.in_(link for link in links))
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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 tags(self) -> list[Tag]:
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stmt = select(Tag)
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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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