import ulid
from sqlalchemy import Column, String, Numeric, DateTime, Text, Index
from sqlalchemy.sql import func
from app.core.database.db_session import Base

class PaymentLedger(Base):
    __tablename__ = "payment_ledger"

    payment_id = Column(String(26), primary_key=True, default=lambda: str(ulid.new()))
    order_id = Column(String(26), nullable=False, index=True)
    provider = Column(String(30), nullable=False) # RAZORPAY, CASH, POS_CARD
    transaction_ref = Column(String(100), nullable=True, index=True) # razorpay_payment_id or receipt_no
    razorpay_order_id = Column(String(100), nullable=True, index=True)
    razorpay_signature = Column(String(255), nullable=True)
    
    amount = Column(Numeric(10, 2), nullable=False)
    currency = Column(String(10), default="INR")
    status = Column(String(30), default="PENDING", index=True) # PENDING, CAPTURED, FAILED, REFUNDED
    raw_response_json = Column(Text, nullable=True)
    created_at = Column(DateTime, server_default=func.now(), index=True)

    __table_args__ = (
        Index('idx_payments_order_status', 'order_id', 'status'),
    )