app.py

from flask import Flask, jsonify, request

from lib.model_client import ModelClientError
from lib.rag_service import answer_question
from lib.validation import validate_question_payload


def create_app():
    app = Flask(__name__)

    @app.post("/api/ask")
    def ask():
        # TODO: Read the JSON request body with request.get_json(silent=True).
        # TODO: Validate the payload with validate_question_payload().
        # TODO: Return a 400 JSON response for invalid input.
        # TODO: Call answer_question(question) for valid input.
        # TODO: Return a 502 JSON response for ModelClientError.
        # TODO: Return the RAG result as JSON with a 200 status code.
        raise NotImplementedError("Implement the POST /api/ask route.")

    return app


app = create_app()