app.py

import os
from flask import Flask, jsonify
from flask_smorest import Api
from flask_jwt_extended import JWTManager

from db import db
from blocklist import BLOCKLIST

from resources.user import blp as UserBlueprint
from resources.items import bp as ItemBlueprint
from resources.stores import bp as StoreBlueprint
from resources.tag import blp as TagBlueprint
from flask_migrate import Migrate


def create_app(db_url = None):

    app = Flask(__name__)
    app.config["PROPAGATE_EXCEPTIONS"] = True
    app.config["API_TITLE"] = "Stores REST API"
    app.config["API_VERSION"] = "v1"
    app.config["OPENAPI_VERSION"] = "3.0.3"
    app.config["OPENAPI_URL_PREFIX"] = "/"
    app.config["OPENAPI_SWAGGER_UI_PATH"] = "/swagger-ui"
    app.config["OPENAPI_SWAGGER_UI_URL"] = "https://cdn.jsdelivr.net/npm/swagger-ui-dist/"
    app.config["SQLALCHEMY_DATABASE_URI"] = db_url or os.getenv("DATABASE_URL", "sqlite:///data.db")
    app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
    # Forzar la clave secreta JWT a ser siempre 'jose', ignorando variables de entorno
    app.config["JWT_SECRET_KEY"] = "jose"
    migrate = Migrate(app, db)
    db.init_app(app)

    api = Api(app)
    jwt = JWTManager(app)
        # 🔥 CREAR TABLAS AUTOMÁTICAMENTE EN RENDER
    with app.app_context():
        db.create_all()

    @jwt.needs_fresh_token_loader
    def token_not_fresh_callback(jwt_header, jwt_payload):
        return (
            jsonify(
                {
                    "description": "The token is not fresh.",
                    "error": "fresh_token_required",
                }
            ),
            401,
        )

    @jwt.token_in_blocklist_loader
    def check_if_token_in_blocklist(jwt_header, jwt_payload):
        return jwt_payload["jti"] in BLOCKLIST


    @jwt.revoked_token_loader
    def revoked_token_callback(jwt_header, jwt_payload):
        return (
            jsonify(
                {"description": "The token has been revoked.", "error": "token_revoked"}
            ),
            401,
        )

    @jwt.additional_claims_loader
    def add_claims_to_jwt(identity):
        if identity == 1:
            return {"is_admin": True}
        return {"is_admin": False}

    @jwt.expired_token_loader
    def expired_token_callback(jwt_header, jwt_payload):
        return (
            jsonify({"message": "The token has expired.", "error": "token_expired"}),
            401,
        )

    @jwt.invalid_token_loader
    def invalid_token_callback(error):
        return (
            jsonify(
                {"message": "Signature verification failed.", "error": "invalid_token"}
            ),
            401,
        )

    @jwt.unauthorized_loader
    def missing_token_callback(error):
        return (
            jsonify(
                {
                    "description": "Request does not contain an access token.",
                    "error": "authorization_required",
                }
            ),
            401,
        )

    api.register_blueprint(UserBlueprint)
    api.register_blueprint(ItemBlueprint)
    api.register_blueprint(StoreBlueprint)
    api.register_blueprint(TagBlueprint)

    return app