from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey, Text, JSON, ARRAY
from sqlalchemy.orm import relationship
from sqlalchemy.dialects.postgresql import UUID
from src.config.database import Base
from sqlalchemy.sql import func
import uuid

class PayerRule(Base):
    __tablename__ = 'payer_rules'

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, nullable=False)
    rule_name = Column(String(255), nullable=False)
    rule_type = Column(String(255), nullable=False)
    rule_description = Column(Text, nullable=False)
    rule_logic = Column(JSON, nullable=False)
    affected_cpt_codes = Column(JSON, nullable=True)
    affected_icd10_codes = Column(JSON, nullable=True)
    effective_date = Column(DateTime, nullable=False)
    termination_date = Column(DateTime, nullable=True)
    denial_count = Column(Integer, nullable=False)
    last_denial_date = Column(DateTime, nullable=True)
    
    payer_id = Column(UUID(as_uuid=True), ForeignKey('payers.id'), nullable=False)
    payer = relationship('Payer', back_populates='payerRules')
    
    created_by_user_id = Column(UUID(as_uuid=True), ForeignKey('users.id'), nullable=True)
    creator = relationship('User', foreign_keys=[created_by_user_id], back_populates='createdPayerRules')
    
    updated_by_user_id = Column(UUID(as_uuid=True), ForeignKey('users.id'), nullable=True)
    updater = relationship('User', foreign_keys=[updated_by_user_id], back_populates='updatedPayerRules')



    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)

    def __repr__(self):
        return f'<PayerRule(id={self.id})>'