campsaver.py
import logging
import requests
from bs4 import BeautifulSoup
import os
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
CAMPSAVER_URL = 'https://www.campsaver.com/'
ITEM_SOTO_OD_1RX = 'soto-od-1rx-windmaster-stove-with-4-flex-pot-support.html'
THRESHOLD_PRICE = 60.0
THRESHOLD_PERCENTAGE = 0.75
SENT_FROM = 'yaoshihyu@gmail.com'
SENT_TO = 'yaoshihyu@gmail.com'
SMTPSERVER = os.environ.get('SMTP_SERVER', 'localhost')
ERROR_MSG = """
ERROR!
The email for this job was supposed to be located in {} but that file
wasn't generated for some reason. This almost never happens, so
look for something farther up in the job related to this subject for
clues as to what might have happened
"""
format_str = "[ %(funcName)s() ] %(message)s"
logging.basicConfig(level=logging.INFO, format=format_str)
def mailit(subject, content_text, sent_from, sent_to):
msg = MIMEMultipart()
body = MIMEText(content_text)
msg.attach(body)
msg['Subject'] = subject
msg['From'] = sent_from
msg['To'] = sent_to
s = smtplib.SMTP(SMTPSERVER)
s.send_message(msg)
s.quit()
def is_threshold_price(source, target):
logging.debug("source is %f" % source)
logging.debug("target is %f" % target)
if source < target or source == target:
return True
else:
return False
def is_threshold_percentage(original, sale, target):
sale_percentage = float(sale) / original
logging.debug(sale_percentage)
logging.debug(target)
return is_threshold_price(sale_percentage, target)
def is_threshold(commodity):
price_original = commodity['price_original']
price_sale = commodity['price_sale']
flag_price = is_threshold_price(price_sale, THRESHOLD_PRICE)
logging.debug("flag_price is %r" % flag_price)
flag_percentage = is_threshold_percentage(price_original, price_sale, THRESHOLD_PERCENTAGE)
logging.debug("flag_percentage is %r" % flag_percentage)
return flag_price or flag_percentage
def get_web_page(url, item_entry):
resp = requests.get(url + item_entry)
if resp.status_code != 200:
print('Invalid url:', resp.url)
return None
else:
return resp.text
def get_commodity_info(dom):
soup = BeautifulSoup(dom, 'html5lib')
commodity = dict()
commodity['name'] = soup.title.text.strip()
prices_dict = soup.find(id='fancy-options').span.attrs
commodity['price_original'] = float(prices_dict['data-variant-price'])
commodity['price_sale'] = float(prices_dict['data-variant-sale'])
commodity['notification'] = is_threshold(commodity)
return commodity
if __name__ == '__main__':
page = get_web_page(CAMPSAVER_URL, ITEM_SOTO_OD_1RX)
if page:
commodity = get_commodity_info(page)
logging.debug(commodity['name'])
for k, v in commodity.items():
if k != 'name':
logging.debug("%s %s" % (k, v))
if commodity['notification']:
logging.info('Hit the target price. Mail notification.')
subject = commodity['name'] + ' hits the target price'
content_text = """
Your commodity meets your expectation {} or {} of the original price.
Click the link to go to the commodity page:
"""
content_text += CAMPSAVER_URL + ITEM_SOTO_OD_1RX
content_text.format(THRESHOLD_PRICE, THRESHOLD_PERCENTAGE)
mailit(subject, content_text, SENT_FROM, SENT_TO)
else:
logging.info('Does not hit the target price. Do nothing.')
else:
logging.warning('No page. Mail notification.')
mailit("No Campsaver watching page", CAMPSAVER_URL + ITEM_SOTO_OD_1RX, SENT_FROM, SENT_TO)