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tfl.py
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tfl.py
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import requests
from lxml import html
from models import Payment, Journey
from util import text_at_xpath, first, text_to_cost
from datetime import datetime
class TflDataAccess():
LOGIN_ENDPOINT = "https://account.tfl.gov.uk/Login"
BASE_URL = "https://contactless.tfl.gov.uk"
MYCARDS_ENDPOINT = BASE_URL + "/MyCards"
VIEW_CARD_ENDPOINT = BASE_URL + "/Card/View"
STATEMENTS_ENDPOINT = BASE_URL + "/Statements/TravelStatement"
STATEMENTS_FILTER_ENDPOINT = BASE_URL + "/Statements/Refresh"
CARD_ID_PARAM = "pi"
MONDO_CARD_NICKNAME = "Mondo"
def __init__(self, username, password):
self.session_requests = requests.session()
self.username = username
self.password = password
self.auth_token = None
self.mondo_card_id = None
self._login()
# Public Methods
def has_incomplete_journeys(self):
result = self.session_requests.get(
self.VIEW_CARD_ENDPOINT,
params={self.CARD_ID_PARAM: self.mondo_card_id},
headers=dict(referer=self.MYCARDS_ENDPOINT))
incomplete_journey_xpath = (
'//div[@data-pageobject="card-notification"]/h5[@class='
'"text-warning" and contains(., "Incomplete Journey")]')
tree = html.fromstring(result.content)
incomplete_journey = first(tree.xpath(incomplete_journey_xpath))
return incomplete_journey is not None
def recent_payments(self):
_, filter_token = self._get_statements()
payload = {
"__RequestVerificationToken": filter_token,
"SelectedStatementType": "Payments",
"SelectedStatementPeriod": "7",
"PaymentCardId": self.mondo_card_id
}
payments_dict = {}
payments_dict.update(self._payments_from_statements(payload))
return payments_dict
def all_payments(self):
periods, filter_token = self._get_statements()
def create_payload(period):
return {
"__RequestVerificationToken": filter_token,
"SelectedStatementType": "Payments",
"SelectedStatementPeriod": period,
"PaymentCardId": self.mondo_card_id
}
payments_dict = {}
for period in periods:
payments = self._payments_from_statements(create_payload(period))
payments_dict.update(payments)
return payments_dict
# Private Methods
def _payments_from_statements(self, statements_payload):
result = self.session_requests.post(
self.STATEMENTS_FILTER_ENDPOINT,
data=statements_payload,
headers=dict(referer=self.STATEMENTS_ENDPOINT))
tree = html.fromstring(result.content)
statements_xpath = \
'//div[@data-pageobject="travelstatement-paymentsummary"]'
statement_divs = tree.xpath(statements_xpath)
payments = (self._div_to_payment(div) for div in statement_divs)
return ((p.date, p) for p in payments)
def _get_statements(self):
# get statements
result = self.session_requests.get(
self.STATEMENTS_ENDPOINT,
params={self.CARD_ID_PARAM: self.mondo_card_id},
headers=dict(referer=self.MYCARDS_ENDPOINT))
tree = html.fromstring(result.content)
refresh_token_xpath = (
'//form[@id="filters"]/input[@name="'
'__RequestVerificationToken"]/@value')
filter_token = first(tree.xpath(refresh_token_xpath))
periods_xpath = ('//select[@id="SelectedStatementPeriod"]'
'/option/@value[not(.="7")]')
periods = tree.xpath(periods_xpath)
return periods, filter_token
def _login(self):
result = self.session_requests.get(self.BASE_URL)
tree = html.fromstring(result.text)
self.auth_token = tree.xpath("//input[@name='AppId']/@value")[0]
payload = {
"UserName": self.username,
"Password": self.password,
"AppId": self.auth_token
}
result = self.session_requests.post(
self.LOGIN_ENDPOINT,
data=payload,
headers=dict(referer=self.BASE_URL))
tree = html.fromstring(result.content)
# bad password
password_xpath = '//div[@class="field-validation-error"]'
error = first(tree.xpath(password_xpath))
if error is not None:
raise ValueError(error.text_content().strip())
self._find_mondo_card()
def _find_mondo_card(self):
result = self.session_requests.get(
self.MYCARDS_ENDPOINT,
headers=dict(referer=self.BASE_URL))
tree = html.fromstring(result.content)
mondo_card_xpath = (
'//a[@data-pageobject="mycards-card-cardlink" '
'and .//span[@class="view-card-nickname" and '
'contains(.,"' + self.MONDO_CARD_NICKNAME + '")]]/@href')
mondo_card = first(tree.xpath(mondo_card_xpath))
if mondo_card is None:
raise ValueError(
'Cannot find card with nickname ' + self.MONDO_CARD_NICKNAME)
self.mondo_card_id = mondo_card.split(self.CARD_ID_PARAM + "=")[1]
def _div_to_journeys(self, div):
detail_xpath = './/a[@data-pageobject="statement-detaillink"]'
return [self._div_to_journey(j) for j in div.xpath(detail_xpath)]
def _div_to_journey(self, j):
journey_from = text_at_xpath(
j, './/span[@data-pageobject="journey-from"]')
journey_to = text_at_xpath(
j, './/span[@data-pageobject="journey-to"]')
journey_time_str = text_at_xpath(
j, './/span[@data-pageobject="journey-time"]')
journey_fare_str = text_at_xpath(
j, './/span[@data-pageobject="journey-fare"]')
journey_fare = text_to_cost(journey_fare_str)
notes = text_at_xpath(
j, './/span[@data-pageobject="journey-to-from"]')
return Journey(journey_from, journey_to, journey_time_str,
journey_fare, notes)
def _div_to_payment(self, div):
price_xpath = './/span[contains(@data-pageobject,"price")]'
cost_str = text_at_xpath(div, price_xpath)
cost = text_to_cost(cost_str)
def parse_date(date_str, format_str):
return datetime.strptime(date_str, format_str).date()
date_xpath = './/span[@data-pageobject="statement-date"]'
date_str = text_at_xpath(div, date_xpath)
date = parse_date(date_str, "%d/%m/%Y")
p = Payment(cost, date)
def has_element(d, xpath_str):
return first(d.xpath(xpath_str)) is not None
warning_xpath = './/img[contains(@class, "warning-icon")]'
p.warning = has_element(div, warning_xpath)
autocompleted_xpath = './/img[contains(@class, "autocompleted")]'
p.autocompleted = has_element(div, autocompleted_xpath)
capped_xpath = './/img[contains(@class, "capped")]'
p.capped = has_element(div, capped_xpath)
p.journeys = self._div_to_journeys(div)
return p