41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
from typing import TYPE_CHECKING
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from sqlalchemy import Column, DateTime, String, ForeignKey, BigInteger
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from sqlalchemy.sql import func
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from .base import AutoID, Base
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if TYPE_CHECKING:
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from .user import User
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from .workspace import Workspace
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class LibraryItem(Base, AutoID):
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"""工作区共享媒体/文件资源库"""
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__tablename__ = "library_items"
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workspace_id = Column(
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String(Workspace.id_length()),
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ForeignKey("workspaces.id", ondelete="CASCADE"),
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index=True,
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)
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# 自引用外键，支持无限级文件夹嵌套
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parent_id = Column(
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String(AutoID.id_length()),
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ForeignKey("library_items.id", ondelete="CASCADE"),
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nullable=True,
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index=True,
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)
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name = Column(String, nullable=False)
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# 节点类型：'folder' (文件夹) 或 'file' (真实文件)
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item_type = Column(String, default="file", nullable=False)
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# --- 以下为真实文件（item_type='file'）的核心字段 ---
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s3_key = Column(String, nullable=True) # S3 中的 Object Key
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file_size = Column(BigInteger, nullable=True) # 文件大小（字节数 Bytes），用于统计容量占用
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mime_type = Column(String, nullable=True) # 媒体类型，例如 'image/jpeg', 'video/mp4', 'application/pdf'
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uploaded_by = Column(
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String(User.id_length()),
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ForeignKey("users.id", ondelete="SET NULL"),
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nullable=True,
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)
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created_at = Column(DateTime(timezone=True), server_default=func.now()) |