"""Document model for SQLite database"""
from sqlalchemy import Column, Integer, String, Text, DateTime
from sqlalchemy.sql import func
from app.db.database import Base


class Document(Base):
    """Document metadata model
    
    Stores information about uploaded documents.
    The actual text chunks and embeddings are stored in ChromaDB.
    """
    __tablename__ = "documents"
    
    document_id = Column(Integer, primary_key=True, autoincrement=True, index=True)
    user_id = Column(Integer, nullable=False, index=True)
    file_name = Column(String(255), nullable=False)
    file_path = Column(Text, nullable=False)
    chunk_count = Column(Integer, default=0)
    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    
    def __repr__(self):
        return f"<Document(id={self.document_id}, file_name='{self.file_name}', user_id={self.user_id})>"