Files
calminer/models/financial_input.py

63 lines
2.1 KiB
Python

from __future__ import annotations
from datetime import date, datetime
from typing import TYPE_CHECKING
from sqlalchemy import (
Date,
DateTime,
ForeignKey,
Integer,
Numeric,
String,
Text,
)
from sqlalchemy.orm import Mapped, mapped_column, relationship, validates
from sqlalchemy.sql import func
from config.database import Base
from .enums import CostBucket, FinancialCategory, sql_enum
from services.currency import normalise_currency
if TYPE_CHECKING: # pragma: no cover
from .scenario import Scenario
class FinancialInput(Base):
"""Line-item financial assumption attached to a scenario."""
__tablename__ = "financial_inputs"
id: Mapped[int] = mapped_column(Integer, primary_key=True)
scenario_id: Mapped[int] = mapped_column(
ForeignKey("scenarios.id", ondelete="CASCADE"), nullable=False, index=True
)
name: Mapped[str] = mapped_column(String(255), nullable=False)
category: Mapped[FinancialCategory] = mapped_column(
sql_enum(FinancialCategory, name="financialcategory"), nullable=False
)
cost_bucket: Mapped[CostBucket | None] = mapped_column(
sql_enum(CostBucket, name="costbucket"), nullable=True
)
amount: Mapped[float] = mapped_column(Numeric(18, 2), nullable=False)
currency: Mapped[str | None] = mapped_column(String(3), nullable=True)
effective_date: Mapped[date | None] = mapped_column(Date, nullable=True)
notes: Mapped[str | None] = mapped_column(Text, nullable=True)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
)
scenario: Mapped["Scenario"] = relationship(
"Scenario", back_populates="financial_inputs")
@validates("currency")
def _validate_currency(self, key: str, value: str | None) -> str | None:
return normalise_currency(value)
def __repr__(self) -> str: # pragma: no cover
return f"FinancialInput(id={self.id!r}, scenario_id={self.scenario_id!r}, name={self.name!r})"