154 lines
6.2 KiB
Python
154 lines
6.2 KiB
Python
import logging
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import re
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import random
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import dbhelper
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import constants
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import helpers
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import product_parser
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import time
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from amazoncaptcha import AmazonCaptcha
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from bs4 import BeautifulSoup
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from selenium.webdriver.common.keys import Keys
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from selenium.webdriver.common.by import By
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from selenium.webdriver.chrome.options import Options
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from selenium import webdriver
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from telegram import Update, ForceReply, InlineKeyboardButton, InlineKeyboardMarkup
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from telegram.ext import Updater, CommandHandler, MessageHandler, Filters, CallbackContext
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from amazon_product import AmazonProduct
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def get_chrome_options():
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chrome_options = Options()
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chrome_options.add_argument("--headless")
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chrome_options.add_argument("--no-sandbox")
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chrome_options.add_argument("--disable-dev-shm-usage")
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chrome_prefs = {}
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chrome_prefs["profile.default_content_settings"] = {"images": 2}
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chrome_options.experimental_options["prefs"] = chrome_prefs
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return chrome_options
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def create_selenium_driver(options: Options):
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logging.info("Setting up new Chrome Browser")
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driver = webdriver.Chrome(options=options)
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driver.set_window_size(random.randint(1200, 1800), random.randint(600, 1000))
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return driver
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def load_page(url: str, driver: webdriver, screenshot_type=""):
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logging.info(f"Loading webpage {url}")
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driver.get(url)
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driver.save_screenshot(f"/app/data/images/last_iteration/last_screenshot{screenshot_type}.png")
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return driver.page_source
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def extract_amazon_url_with_referer(text: str):
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productCode = ""
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extraparams = ""
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start = text.find("amzn.to")
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if start != -1:
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text = helpers.unshort_url(text[start:].split()[0])
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start = text.find("amzn.eu")
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if start != -1:
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text = helpers.unshort_url(text[start:].split()[0])
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start = text.find(constants.searchURL)
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if start != -1:
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text = f"https://{text[start:].split(' ')[0]}"
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m = re.search(r'(?:dp\/[\w]*)|(?:gp\/product\/[\w]*)',text) # Gets product code in amazon
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m_e = re.search(r'(?:&m=[\w]*)',text) # Gets vendor and keeps it
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if m != None:
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productCode = m.group(0)
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if m_e != None:
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extraparams = m_e.group(0)
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return helpers.new_refer_url(productCode, extraparams)
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def resolve_captcha(driver: webdriver):
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logging.info("Trying to resolve captcha")
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captcha = AmazonCaptcha.fromdriver(driver)
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solution = captcha.solve()
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return solution if solution != 'Not solved' else None
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def apply_captcha(captcha_solution: str, driver: webdriver):
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logging.info(f"Captcha solution is {captcha_solution}, redirecting")
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logging.info("Waiting for 5 seconds, humans are not that fast :)")
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time.sleep(5)
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fill_captcha_element = driver.find_element(By.ID, 'captchacharacters')
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fill_captcha_element.send_keys(captcha_solution)
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fill_captcha_element.send_keys(Keys.RETURN)
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def scrape_data(page_html: str) -> AmazonProduct:
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logging.info("Scraping information")
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soup = BeautifulSoup(page_html, "lxml")
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etree_soup = BeautifulSoup(page_html, "html.parser")
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title, price, image = product_parser.get_title(soup), product_parser.get_price(soup), product_parser.get_image(soup, etree_soup)
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return AmazonProduct(title=title, price=price, image=image) if title != "" else None
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def find_amazon_link(update: Update, context: CallbackContext) -> None:
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try:
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msg = update.message.text
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except AttributeError:
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logging.info(f"Received message has no text")
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return
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user, chat, chat_id, message_id = update.message.from_user, update.message.chat, update.message.chat_id, update.message.message_id
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logging.info(f"Link sent by {user} - {msg}")
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amazon_url_with_referer = extract_amazon_url_with_referer(msg)
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if amazon_url_with_referer:
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with create_selenium_driver(get_chrome_options()) as chrome_driver:
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logging.info("Loading page for scraping information")
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page_html = load_page(url=amazon_url_with_referer, driver=chrome_driver)
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product_data = scrape_data(page_html)
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if not product_data:
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logging.info(f"Title not found, not a valid product or captcha")
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captcha_solution = resolve_captcha(chrome_driver)
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if captcha_solution:
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apply_captcha(captcha_solution, chrome_driver)
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logging.info("Re-loading Amazon webpage")
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page_html = load_page(url=amazon_url_with_referer, driver=chrome_driver, screenshot_type="_aftercaptcha")
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product_data = scrape_data(page_html)
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else:
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logging.info("Couldn't solve the captcha, if there was any")
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if not product_data: #if after applying the captcha we don't have any data yet, stop the execution and reply to the user
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logging.info("Unable to get the product information")
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context.bot.send_message(chat_id=chat_id, text="Unable to get product attributes from the provided url", reply_to_message_id=message_id)
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return
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logging.info(f"Product information found: {product_data}")
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context.bot.deleteMessage(chat_id=chat_id, message_id=message_id)
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product_id = dbhelper.check_product(amazon_url_with_referer, product_data.price)
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if not product_id:
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product_id = dbhelper.add_product(user['username'], chat['title'], user['id'], chat_id, msg, amazon_url_with_referer, product_data.title, product_data.price, product_data.image)
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helpers.create_image(product_id, product_data.price)
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keyboard = [[InlineKeyboardButton("Ir a Amazon", url=f"{amazon_url_with_referer}")]]
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markup = InlineKeyboardMarkup(keyboard)
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context.bot.send_photo(chat_id=chat_id, photo=open(f"/app/data/images/products/{product_id}_composed.png", 'rb'), caption=f"URL enviada por @{user['username']}: \n\n{product_data.title}", reply_markup=markup)
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def main() -> None:
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dbhelper.setup_db()
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updater = Updater(constants.TELEGRAM_API_KEY)
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dispatcher = updater.dispatcher
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dispatcher.add_handler(MessageHandler(Filters.text & ~Filters.command, find_amazon_link))
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updater.start_polling()
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updater.idle()
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if __name__ == '__main__':
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main()
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