from sqlalchemy import Column, Integer, String, DateTime, Index
from sqlalchemy.sql import func
from ..database import Base


class Translation(Base):
    """Translation dictionary for car-related terms"""
    __tablename__ = "translations"

    id = Column(Integer, primary_key=True, index=True)

    # Source text (Korean)
    source_text = Column(String(500), nullable=False, index=True)

    # Category: maker, model, fuel, transmission, color, car_name, etc.
    category = Column(String(50), nullable=False, index=True)

    # Translations
    text_en = Column(String(500))  # English
    text_mn = Column(String(500))  # Mongolian
    text_ru = Column(String(500))  # Russian

    created_at = Column(DateTime, default=func.now())
    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())

    __table_args__ = (
        Index('ix_translations_source_category', 'source_text', 'category', unique=True),
    )