add social interactions, rich media metadata, and workspace description

app/models/__init__.py

@@ -5,6 +5,8 @@ from .follow import Follow
 from .workspace import Workspace, WorkspaceMember
 from .project import ProjectNode
 from .library import LibraryItem
+# 引入新交互表
+from .interaction import ProjectLike, ProjectFavorite, ProjectShare
 
 __all__ = [
     "Base", 
@@ -14,5 +16,8 @@ __all__ = [
     "Workspace", 
     "WorkspaceMember", 
     "ProjectNode", 
-    "LibraryItem"
+    "LibraryItem",
+    "ProjectLike",
+    "ProjectFavorite",
+    "ProjectShare"
 ]

app/models/interaction.py

@@ -0,0 +1,44 @@
+from sqlalchemy import Column, DateTime, String, ForeignKey, UniqueConstraint
+from sqlalchemy.sql import func
+from .base import AutoID, Base
+
+class ProjectLike(Base, AutoID):
+    """项目点赞表"""
+    __tablename__ = "project_likes"
+
+    user_id = Column(String(32), ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    project_node_id = Column(String(32), ForeignKey("project_nodes.id", ondelete="CASCADE"), index=True)
+    
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    # 联合唯一约束，防止同一用户重复点赞
+    __table_args__ = (UniqueConstraint("user_id", "project_node_id", name="uq_user_project_like"),)
+
+
+class ProjectFavorite(Base, AutoID):
+    """项目收藏表"""
+    __tablename__ = "project_favorites"
+
+    user_id = Column(String(32), ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    project_node_id = Column(String(32), ForeignKey("project_nodes.id", ondelete="CASCADE"), index=True)
+    
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    # 联合唯一约束，防止重复收藏
+    __table_args__ = (UniqueConstraint("user_id", "project_node_id", name="uq_user_project_favorite"),)
+
+
+class ProjectShare(Base, AutoID):
+    """项目转发/分享记录表"""
+    __tablename__ = "project_shares"
+
+    user_id = Column(String(32), ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    project_node_id = Column(String(32), ForeignKey("project_nodes.id", ondelete="CASCADE"), index=True)
+    
+    # 转发去向或渠道，例如 'internal' (转发到其他工作区), 'twitter', 'link' (复制链接)
+    share_target = Column(String, default="internal", nullable=False)
+    
+    # 如果是转发到特定工作区，可以记录目标工作区 ID
+    target_workspace_id = Column(String(32), ForeignKey("workspaces.id", ondelete="SET NULL"), nullable=True)
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())

app/models/project.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, DateTime, String, ForeignKey
+from sqlalchemy import Column, DateTime, String, ForeignKey, Integer
 from sqlalchemy.sql import func
 from .base import AutoID, Base
 
@@ -17,4 +17,10 @@ class ProjectNode(Base, AutoID):
     # 如果是 project 节点，可以用这一列来存储其内容或配置快照（如 JSON 文本）
     content = Column(String, nullable=True)
     
+    # --- 新增：富媒体与播放信息 ---
+    cover_url = Column(String, nullable=True)       # 封面图（可以是图片、GIF 或短视频预览 URL）
+    duration = Column(Integer, default=0)           # 媒体时长（单位：秒，非视频/GIF 则为 0）
+    view_count = Column(Integer, default=0, nullable=False)
+
     created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())