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pge.py
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pge.py
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"""Retrieves Pacific Gas and Electric (PG&E) PDF bills.
These PDF bills can be parsed by extracting the text using `pdftotext`.
This uses the `selenium` Python package in conjunction with `chromedriver` to
scrape the Stockplanconnect website.
Configuration:
==============
The following keys may be specified as part of the configuration dict:
- `credentials`: Required. Must be a `dict` with `'username'` and `'password'`
keys.
- `output_directory`: Required. Must be a `str` that specifies the path on the
local filesystem where the bills will be saved. If the directory does not
exist, it will be created.
- `stop_early`: Optional. Must be a `bool` that specifies whether to stop after
the most recent already-present bill is downloaded. Defaults to `True`.
- `profile_dir`: Optional. If specified, must be a `str` that specifies the
path to a persistent Chrome browser profile to use. This should be a path
used solely for this single configuration; it should not refer to your normal
browser profile. If not specified, a fresh temporary profile will be used
each time.
Output format:
==============
Each statement is saved to the `output_directory` with a name like:
2017-11-28.bill.pdf
The date corresponds to the "Statement Date" of the bill.
Example:
========
def CONFIG_pge():
return dict(
module='finance_dl.pge',
credentials={
'username': 'XXXXXX',
'password': 'XXXXXX',
},
output_directory=os.path.join(data_dir, 'pge'),
)
Interactive shell:
==================
From the interactive shell, type: `self.run()` to start the scraper.
"""
import re
import datetime
import logging
import os
import urllib.parse
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
from selenium.webdriver.common.keys import Keys
from . import scrape_lib
logger = logging.getLogger('pge_scrape')
netloc_re = r'^([^\.@]+\.)*pge.com$'
def check_url(url):
result = urllib.parse.urlparse(url)
if result.scheme != 'https' or not re.fullmatch(netloc_re, result.netloc):
raise RuntimeError('Reached invalid URL: %r' % url)
def find_first_matching_date(lines, date_format):
for line in lines:
try:
return datetime.datetime.strptime(line, date_format).date()
except:
pass
return None
class Scraper(scrape_lib.Scraper):
def __init__(self, credentials, output_directory, stop_early=True, **kwargs):
super().__init__(**kwargs)
self.credentials = credentials
self.output_directory = output_directory
self.stop_early = stop_early
self.logged_in = False
def check_after_wait(self):
check_url(self.driver.current_url)
def login(self):
if self.logged_in:
return
logger.info('Initiating log in')
self.driver.get('https://m.pge.com/')
(username, password), = self.wait_and_return(
self.find_username_and_password_in_any_frame)
logger.info('Entering username and password')
username.send_keys(self.credentials['username'])
password.send_keys(self.credentials['password'])
password.send_keys(Keys.ENTER)
self.wait_and_return(lambda: self.find_visible_elements(By.ID, 'arrowBillPaymentHistory'))
logger.info('Logged in')
self.logged_in = True
def get_output_path(self, output_dir, date):
journal_date_format = '%Y-%m-%d'
return os.path.join(
output_dir, '%s.bill.pdf' % (date.strftime(journal_date_format)))
def process_download(self, download_result, output_dir):
logger.info('Got download: %s' % download_result[0])
m = re.fullmatch(r'.*custbill([0-9]{2})([0-9]{2})([0-9]{4})\.pdf',
download_result[0])
if not m:
logger.error('Failed to determine date from downloaded file: %s' %
download_result[0])
return True
else:
date = datetime.date(
year=int(m.group(3)), month=int(m.group(1)), day=int(
m.group(2)))
new_path = self.get_output_path(output_dir, date)
if os.path.exists(new_path):
logger.info('Skipping duplicate download: %s', date)
return False
tmp_path = new_path.replace('.pdf', '.tmp.pdf')
with open(tmp_path, 'wb') as f:
download_data = download_result[1]
f.write(download_data)
os.rename(tmp_path, new_path)
logger.info("Wrote %s", new_path)
return True
def do_download_from_link(self, link, output_dir):
scrape_lib.retry(lambda: self.click(link), retry_delay=2)
logger.info('Waiting for download')
download_result, = self.wait_and_return(self.get_downloaded_file)
return self.process_download(download_result, output_dir)
def get_bills(self, output_dir):
logger.info('Sending escape')
actions = ActionChains(self.driver)
actions.send_keys(Keys.ESCAPE)
actions.perform()
logger.info('Looking for download link')
(bills_link, ), = self.wait_and_return(lambda: self.find_visible_elements(By.ID, 'arrowBillPaymentHistory'))
scrape_lib.retry(lambda: self.click(bills_link), retry_delay=2)
(more_link, ), = self.wait_and_return(lambda: self.find_visible_elements(By.ID, 'href-view-24month-history'))
scrape_lib.retry(lambda: self.click(more_link), retry_delay=2)
links, = self.wait_and_return(lambda: self.find_visible_elements(By.CSS_SELECTOR, ".utag-bill-history-view-bill-pdf"))
for link in links:
if not self.do_download_from_link(link, output_dir) and self.stop_early:
break
def run(self):
self.login()
if not os.path.exists(self.output_directory):
os.makedirs(self.output_directory)
self.get_bills(self.output_directory)
def run(**kwargs):
scrape_lib.run_with_scraper(Scraper, **kwargs)
def interactive(**kwargs):
return scrape_lib.interact_with_scraper(Scraper, **kwargs)