app/mainTest.py

from typing import Optional
from fastapi import FastAPI, status, Response, HTTPException
from pydantic import BaseModel
from random import randrange

class po(BaseModel):
    title:str
    content:str
    rating:Optional[int]=None

db = [
    {"title":"Title 1","content":"Content 1","id":1},
    {"title":"Title 2","content":"Content 2","id":2},
    {"title":"Title 3","content":"Content 3","id":3},
    {"title":"Title 4","content":"Content 4","id":4},
    {"title":"Title 5","content":"Content 5","id":5}
]

def find_id(id):
    for i in db:
        if i["id"] == id:
            return i

def find_index_post(id):
    for i, p in enumerate(db):
        if p["id"] == id:
            print(p)
            print(i)
            return i 
        
app = FastAPI()

@app.get("/post")
async def all_podt():
    return {"Message":db}

@app.post("/post",status_code=status.HTTP_201_CREATED)
async def creat_post(post:po):
    post_dict = post.dict()
    post_dict['id']= randrange(1,500000)
    db.append(post_dict)
    return{"New Post":post_dict}

@app.get("/post/latests") #Recent Post
async def latests_post():
    post = db[len(db)-1]
    return {"Message": post}

@app.get("/post/{id}")
async def post_by_id(id:int, res:Response):
    post = find_id(id)
    if not post:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Post with id {id} not found.")
    else:
     return{"Post": post}

@app.delete("/post/{id}",status_code=status.HTTP_204_NO_CONTENT)
async def delete_post(id:int):
    index = find_index_post(id)
    if index is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND,detail=f"Data not found.")
    db.append(index)
    return Response(status_code=status.HTTP_204_NO_CONTENT)
    
@app.put("/post/{id}")
async def update_post(id:int,post:po):
    index = find_index_post(id)
    if index in None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Data not found")
    post_dict = post.dict()
    post_dict['id'] = id
    db[index] = post_dict
    return {"Data":db[index]}

# venv\Scripts\activate.bat
# python -m uvicorn app.mainTest:app --reload