编写后端

backend/app/schemas/comment.py

@@ -0,0 +1,55 @@
+"""
+评论 Schema
+"""
+from datetime import datetime
+from typing import Optional, List
+from pydantic import BaseModel, Field
+
+
+class CommentBase(BaseModel):
+    """评论基础 Schema"""
+    content: str = Field(..., min_length=1, description="评论内容")
+
+
+class CommentCreate(CommentBase):
+    """评论创建 Schema"""
+    post_id: str = Field(..., description="文章ID")
+    parent_id: Optional[str] = Field(None, description="父评论ID")
+
+
+class CommentUpdate(BaseModel):
+    """评论更新 Schema"""
+    content: Optional[str] = Field(None, min_length=1)
+
+
+class CommentAuthor(BaseModel):
+    """评论作者 Schema"""
+    id: str
+    username: str
+    avatar: Optional[str] = None
+
+    class Config:
+        from_attributes = True
+
+
+class CommentResponse(CommentBase):
+    """评论响应 Schema"""
+    id: str
+    author: CommentAuthor
+    post_id: str
+    parent_id: Optional[str] = None
+    is_approved: bool
+    created_at: datetime
+    updated_at: datetime
+    replies: List["CommentResponse"] = []
+
+    class Config:
+        from_attributes = True
+
+
+class CommentListResponse(BaseModel):
+    """评论列表响应 Schema"""
+    items: List[CommentResponse]
+    total: int
+    page: int
+    page_size: int