from sqlalchemy import Column, Integer, String, Text, DateTime, JSON, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from database import Base


class EssayGrade(Base):
    __tablename__ = "essay_grades"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
    title = Column(String(200), nullable=False)
    essay_text = Column(Text, default="")
    grade_level = Column(String(50), default="初中")
    essay_type = Column(String(50), default="记叙文")
    total_score = Column(Integer, default=50)
    result = Column(JSON, default=dict)
    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())

    author = relationship("User", back_populates="essay_grades")