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from datetime import datetime
from sqlalchemy import Column, String, BigInteger, JSON, DateTime, Enum
from sqlalchemy.sql import func
from lpm_kernel.common.repository.database_session import Base
import os
class Memory(Base):
"""Memory model class"""
__tablename__ = "memories"
id = Column(String(36), primary_key=True)
name = Column(String(255), nullable=False)
size = Column(BigInteger, nullable=False)
type = Column(String(50), nullable=False)
path = Column(String(1024), nullable=False)
meta_data = Column(JSON)
document_id = Column(String(36), nullable=True) # associated document ID
created_at = Column(DateTime, server_default=func.now())
updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
status = Column(Enum("active", "deleted"), nullable=False, default="active")
def __init__(self, name, size, path, metadata=None):
import uuid
self.id = str(uuid.uuid4())
self.name = name
self.size = size
self.path = path
self.meta_data = metadata or {}
# get type from file extension, if no extension, set to 'unknown'
_, ext = os.path.splitext(path)
self.type = ext[1:].lower() if ext else "unknown"
# set default time
self.created_at = datetime.now()
self.updated_at = datetime.now()
def to_dict(self):
"""Convert to dictionary, including document_id"""
result = {
"id": self.id,
"name": self.name,
"type": self.type,
"path": self.path,
"created_at": self.created_at.isoformat() if self.created_at else None,
"meta_data": self.meta_data,
}
if self.document_id:
result["document_id"] = self.document_id
return result
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