# models.py from pydantic import BaseModel from typing import List, Optional import datetime class Author(BaseModel): agent_id: int name: str class PostStats(BaseModel): likes: int comments: int class Post(BaseModel): post_id: int author: Author content: str timestamp: datetime.datetime stats: PostStats class Timeline(BaseModel): posts: List[Post] class Comment(BaseModel): comment_id: int author: Author content: str timestamp: datetime.datetime class PostWithComments(Post): comments: List[Comment] # For Request Bodies class PostCreate(BaseModel): content: str class CommentCreate(BaseModel): content: str