app.py

import os
from flask import Flask
from flask_restful import Api
from time import sleep
from utils.process import Process
from models.product import ProductModel
from resources.product import Products, Product
from utils.config_helper import ConfigHelper

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
api = Api(app)


@app.before_first_request
def create_database():
    if not os.path.exists('./database.db'):
        print("Create a database\n")
        database.create_all()
        sleep(0.1)

    file_name = "products_79936.json"
    if not os.path.exists(file_name):
        # Download of mock database
        Process.run('curl https://servicespub.prod.api.aws.grupokabum.com.br/descricao/v1/descricao/produto/79936 >> %s' % file_name)

    ## Save database ##
    # Read $filename
    config_file = './%s' % file_name
    config_helper = ConfigHelper(config_file)
    config = config_helper.load_config()

    # Read only products of config
    config = config['familia']['produtos']
    for data in config:
        product = ProductModel(**data)
        try:
            # Save products in database
            product.save_product()
            sleep(0.01)
        except:
            print({"message": "An error ocurred trying to create product."}, 500)  # Internal Server Error

api.add_resource(Products, '/produto')
api.add_resource(Product, '/produto/<int:codigo>')


if __name__ == '__main__':
    from sql_alchemy import database
    database.init_app(app)
    app.run(debug=True)