amazon_price.py

#!/usr/bin/env python3
import requests
from os import getenv
import bs4
from twilio.rest import Client
import time

"""
Scrapper: get_price() digs amazon URL and exracts the ProductID of it.
Product ID is the very most unique part of amazon store.
This helps to use the online portal camelcamelcamel.com.
This approache makes this script persistence.
"""


def get_price(URL):
    country_prefix = ""
    if "amazon.de" in URL:
        country_prefix = "de."
        URL = URL.replace("/dp/", "/product/")

    URL = URL.replace("?", "/")
    ProductID = URL.split("/product/", 1)[1].split("/")[0]

    headers = {
        'authority': 'www.camelcamelcamel.com',
        'pragma': 'no-cache',
        'cache-control': 'no-cache',
        'dnt': '1',
        'upgrade-insecure-requests': '1',
        'user-agent': '''Mozilla/5.0 (X11; Chrome x86_64 8172.45.0) AppleWebKit/537.36
        (KHTML, like Gecko) Chrome/51.0.2704.64 Safari/537.36''',
        'accept': '''text/html,application/xhtml+xml,application/xml;q=0.9,image/
        webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9''',
        'sec-fetch-site': 'none',
        'sec-fetch-mode': 'navigate',
        'sec-fetch-dest': 'document',
        'accept-language': 'en-GB,en-US;q=0.9,en;q=0.8',
    }

    htmldata = requests.get("https://" + country_prefix + "camelcamelcamel.com/product/" + ProductID, headers=headers)
    soup = bs4.BeautifulSoup(htmldata.text, 'html.parser')
    current = ".".join(soup.find("span", {'class': 'green'}).text[:-1].split(","))
    '''
    This could be handy for futur advance comparison or maybe auto order.
    # highest  = ".".join(soup.find("tr", {'class': 'highest_price'}).text.strip().split("\n")[1][:-1].split(","))
    # lowest = ".".join(soup.find("tr", {'class': 'lowest_price'}).text.strip().split("\n")[1][:-1].split(","))
    '''
    return (float(current))


"""
Simple Logic: Is the Product's price bellower I want, then inbox me or text me.
"""


def check_price(URL, desired_price):
    if isinstance(desired_price) is False:
        raise TypeError('Desired Price should be Int or Double decimal')
    else:
        current_price = (get_price(getenv("URL")))
        if(desired_price < current_price):
            # TODO: Sends email
            pass
        if (desired_price >= current_price):
            Client(getenv(
                'ACCOUNT_SID'), getenv('AUTH_TOKEN')).messages.create(
                body='Current price for {} is {}.'.format(getenv("URL"), current_price),
                from_='+twilio_number',
                to='+user_phone_number'
            )


if __name__ == "__main__":
    while True:
        check_price(200, getenv("URL"))
        time.sleep((60 * 60) * 12)