from sqlalchemy import Column, Integer, String, Boolean, ForeignKey
from sqlalchemy.orm import relationship
from app.db.database import Base

class Contractor(Base):
    __tablename__ = "contractors"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, nullable=False)
    ruc = Column(String, unique=True)
    contact_name = Column(String)
    email = Column(String, nullable=True)
    phone = Column(String, nullable=True)
    address = Column(String, nullable=True)
    is_active = Column(Boolean, default=True)
    
    specialty_id = Column(Integer, ForeignKey("specialties.id"), nullable=True)
    parent_id = Column(Integer, ForeignKey("contractors.id"), nullable=True)

    specialty = relationship("app.models.specialty.Specialty")
    parent = relationship("Contractor", remote_side=[id], back_populates="subcontractors")
    subcontractors = relationship("Contractor", back_populates="parent")