from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, func
from database import Base

class Document(Base):
    __tablename__ = "documents"
    id = Column(Integer, primary_key=True, autoincrement=True)
    template_id = Column(Integer, ForeignKey("templates.id"), nullable=False)
    name = Column(String(255), default="", comment="文档名称")
    para_count_done = Column(Integer, default=0, comment="已完成段落数")
    para_count_total = Column(Integer, default=0, comment="总段落数")
    status = Column(String(20), default="pending", comment="pending/generating/completed/failed/cancelled")
    file_path = Column(String(500), default="", comment="生成的文件路径")
    error = Column(Text, default="", comment="错误信息")
    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())