from pydantic import Field

class Extracted(BaseModel):
    """Generic wrapper so I'm not writing a near-identical class per field type."""
    value: float | date | str | None
    evidence: str | None = Field(description="exact quote backing this value, empty if not found")

class Transaction(BaseModel):
    sender: str | None
    amount: Extracted
    transaction_id: str | None
    transaction_date: Extracted