backend.py

from fastapi import FastAPI, Request
from pydantic import BaseModel, Field

class Result(BaseModel):
    result: int = Field(title="Result",
                        description="The result of an arithmetic operation.")


app = FastAPI(
    title="Arithmetic API",
    description="This is a simple API that performs arithmetic operations.",
    version="0.0.1",
    servers=[{'url': 'https://z3c6nsr.localto.net/', 
              'description': 'Arithmetic API server'}],
)

@app.get("//maths/add/{num1}/{num2}",
         name="Add",
         description="This is an endpoint that adds two numbers using path parameters, and yields the result in JSON format.",
         tags=["maths"],
         response_model=Result
         )
def add(num1: int, num2: int, request: Request):
    ephemeral_user_id = request.headers.get('openai-ephemeral-user-id')
    conversation_id = request.headers.get('openai-conversation-id')
    print(f"ephemeral_user_id: {ephemeral_user_id}")
    print(f"conversation_id: {conversation_id}")
    return Result(result=num1 + num2)

@app.get("//maths/subtract/{num1}/{num2}",
            name="Subtract",
            description="This is an endpoint that subtracts two numbers using path parameters, and yields the result in JSON format.",
            tags=["maths"],
            response_model=Result
            )
def subtract(num1: int, num2: int):
    return Result(result=num1 - num2)

@app.get("//maths/multiply/{num1}/{num2}",
            name="Multiply",
            description="This is an endpoint that multiplies two numbers using path parameters, and yields the result in JSON format.",
            tags=["maths"],
            response_model=Result
            )
def multiply(num1: int, num2: int):
    return Result(result=num1 * num2)

@app.get("//maths/divide/{num1}/{num2}",
            name="Divide",
            description="This is an endpoint that divides two numbers using path parameters, and yields the result in JSON format.",
            tags=["maths"],
            response_model=Result
            )
def divide(num1: int, num2: int):
    return Result(result=num1 / num2)