import uuid
from sqlalchemy import Uuid, Column, DateTime, Enum, Float, ForeignKey
from sqlalchemy.orm import relationship, backref

from app.schemas.transaction import TransactionEventTriggerReason, TransactionStatus
from app.database import Base

class Transaction(Base):
    __tablename__ = "transactions"

    id = Column(Uuid, primary_key=True, default=uuid.uuid4)
    status = Column(Enum(TransactionStatus), index=True)
    started_at = Column(DateTime, index=True)
    ended_at = Column(DateTime, nullable=True, index=True)
    meter_start = Column(Float)
    meter_end = Column(Float, nullable=True)
    end_reason = Column(Enum(TransactionEventTriggerReason))

    connector_id = Column(Uuid, ForeignKey("connectors.id"), index=True)
    id_token_id = Column(Uuid, ForeignKey("id_tokens.id"), index= True)