main.py

from fastapi import FastAPI, Query, HTTPException
from pydantic import BaseModel
from typing import Optional

import json

app = FastAPI()

class Person(BaseModel):
	id: Optional[int] = None
	name: str
	age: int
	gender: str

with open('people.json', 'r') as f:
	people = json.load(f)


@app.get('/person/{p_id}', status_code = 200)
def get_persion(p_id: int):
	person = [p for p in people if p['id'] == p_id]
	return person[0] if len(person) > 0 else {}



@app.get("/search", status_code=200)
def search_person(age: Optional[int] = Query(None, title="Age", description="The age to filter for"),
		        name: Optional[str] = Query(None, title="Name", description= "The name to filter for")):

	people1 = [p for p in people if p['age'] == age]
	if name is None:
		if age is None:		
			return people
		else:
			return people1
	else:
		people2 = [p for p in people if name.lower in p['name'].lower]
		if age is None:
			return people2
		else:
			combined = [p for p in people1 if p in people2]
			return combined


@app.post('/addPerson', status_code = 201)
def add_person(person: Person):


	p_id = max([p['id'] for p in people] + 1)
	new_person = {

		"id": p_id,
		"name": person.name,
		"age": person.age,
		"gender": person.gender
}


	people.append(new_person)

	with open('people.json', 'w') as f:
		json.dump(people, f)

	return new_person

@app.put('/changePerson',status_code=204)
def chanege_person(person: Person):

	new_person = {

		"id": person.id,
		"name": person.name,
		"age": person.age,
		"gender": person.gender

}

	person_list = [p for p in people if['id'] == person.id]
	if len(person_list) > 0:
		people.remove(person_list[0])
		people.append(new_person)
		with open('people.json', 'w') as f:
			json.dump(people,f)
		return new_person
	else:
		return HTTPException(status_code=404, detail=f"Person with id {person.id} does not exits!")