from flask import Flask, current_app
app = Flask(__name__)
port = 8000

import logging
from time import sleep
from random import randint

@app.route("/")
def home_route():
  return "Use /checkout endpoint"

@app.route("/healthcheck")
def healthcheck_route():
  return "Ok"

@app.route("/checkout")
def checkout_route():
  checkout()
  return "Checkout successfull"

def checkout():
  app.logger.info("Processing checkout...")
  get_cart_items()
  get_items_price()
  process_payment()
  app.logger.info("Checkout successfull.")

def get_cart_items():
  app.logger.info("Getting cart items...")
  delay(10, 20)
  app.logger.info("Got cart items.")

def get_items_price():
  app.logger.info("Getting items price...")
  delay(20, 30)
  app.logger.info("Got items price.")

def process_payment():
  app.logger.info("Processing payment...")
  delay(40, 60)
  apply_coupon()
  app.logger.info("Payment successfull.")

def apply_coupon():
  app.logger.info("Applying coupon...")
  delay(10, 20)
  app.logger.info("No coupon specified.")

def delay(min, max):
  return sleep(randint(min, max)/1000)

if __name__ == "__main__":
  app.logger.setLevel(logging.INFO)
  app.logger.info("Starting webserver")
  app.run(host = "0.0.0.0", port = port)