You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.7 KiB
67 lines
2.7 KiB
|
|
from . import difference_detection_processor
|
|
from copy import deepcopy
|
|
from loguru import logger
|
|
import hashlib
|
|
import urllib3
|
|
|
|
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
|
|
|
|
name = 'Re-stock detection for single product pages'
|
|
description = 'Detects if the product goes back to in-stock'
|
|
|
|
class UnableToExtractRestockData(Exception):
|
|
def __init__(self, status_code):
|
|
# Set this so we can use it in other parts of the app
|
|
self.status_code = status_code
|
|
return
|
|
|
|
class perform_site_check(difference_detection_processor):
|
|
screenshot = None
|
|
xpath_data = None
|
|
|
|
def run_changedetection(self, uuid, skip_when_checksum_same=True):
|
|
|
|
# DeepCopy so we can be sure we don't accidently change anything by reference
|
|
watch = deepcopy(self.datastore.data['watching'].get(uuid))
|
|
|
|
if not watch:
|
|
raise Exception("Watch no longer exists.")
|
|
|
|
# Unset any existing notification error
|
|
update_obj = {'last_notification_error': False, 'last_error': False}
|
|
|
|
self.screenshot = self.fetcher.screenshot
|
|
self.xpath_data = self.fetcher.xpath_data
|
|
|
|
# Track the content type
|
|
update_obj['content_type'] = self.fetcher.headers.get('Content-Type', '')
|
|
update_obj["last_check_status"] = self.fetcher.get_last_status_code()
|
|
|
|
# Main detection method
|
|
fetched_md5 = None
|
|
if self.fetcher.instock_data:
|
|
fetched_md5 = hashlib.md5(self.fetcher.instock_data.encode('utf-8')).hexdigest()
|
|
# 'Possibly in stock' comes from stock-not-in-stock.js when no string found above the fold.
|
|
update_obj["in_stock"] = True if self.fetcher.instock_data == 'Possibly in stock' else False
|
|
logger.debug(f"Watch UUID {uuid} restock check returned '{self.fetcher.instock_data}' from JS scraper.")
|
|
else:
|
|
raise UnableToExtractRestockData(status_code=self.fetcher.status_code)
|
|
|
|
# The main thing that all this at the moment comes down to :)
|
|
changed_detected = False
|
|
logger.debug(f"Watch UUID {uuid} restock check - Previous MD5: {watch.get('previous_md5')}, Fetched MD5 {fetched_md5}")
|
|
|
|
if watch.get('previous_md5') and watch.get('previous_md5') != fetched_md5:
|
|
# Yes if we only care about it going to instock, AND we are in stock
|
|
if watch.get('in_stock_only') and update_obj["in_stock"]:
|
|
changed_detected = True
|
|
|
|
if not watch.get('in_stock_only'):
|
|
# All cases
|
|
changed_detected = True
|
|
|
|
# Always record the new checksum
|
|
update_obj["previous_md5"] = fetched_md5
|
|
return changed_detected, update_obj, self.fetcher.instock_data.encode('utf-8').strip()
|