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trains.py
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trains.py
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# -*- coding: utf-8 -*-
"""
RZD API
"""
import requests
import json
import time
import avia
import myutils
import urllib
places_cache = { }
def find_places(namepart):
"""Find places.
returns an array of
{
'name' : 'МОСКВА', (upper case only)
'code' : 123 (int)
}
"""
namepart = namepart.upper()
r = requests.get('http://rzd.ru/suggester?lang=ru&stationNamePart='+namepart)
if r.text == '':
return []
res = sorted(r.json(), key=lambda k: -(k['S'] + k['L']))
res = [{'name':item['n'], 'code':item['c']} for item in res if namepart in item['n']]
return res
def get_tickets(origin, destination, date):
"""Get tickets.
:param origin: Москва
:param destination: Омск
:param date: 2016-12-29
"""
return format_tickets_data(get_tickets_rawdata(origin, destination, date))
def get_tickets_rawdata(origin, destination, date):
"""get_tickets_rawdata(find_places('москва')[0], find_places('омск')[0], '2016-12-29')
"""
o = myutils.find_cities(origin)
d = myutils.find_cities(destination)
check = myutils.check_zero_len(o, d, origin, destination, 'no such city')
if not check == 'ok':
return check
o = o[0]
d = d[0]
o = find_places(o['name'])
d = find_places(d['name'])
check = myutils.check_zero_len(o, d, origin, destination, 'no such train station')
if not check == 'ok':
return check
o = o[0]
d = d[0]
rzd_date = date_to_retarded_rzd_date(date)
requesturi = 'http://pass.rzd.ru/timetable/public/ru'
_params = {
'STRUCTURE_ID':'735',
'layer_id':'5371',
'dir':'0',
'tfl':'3',
'checkSeats':'1',
#'st0':origin.name,
'code0':o['code'],
#'st1':destination.name,
'code1':d['code'],
'dt0':rzd_date
}
r = requests.get(requesturi, params = _params)
if r.text == '':
return {'error':'empty response'}
rj = r.json()
if not 'result' in rj or not rj['result'] == 'RID':
return rj
_params['rid'] = str(rj['rid'])
return myutils.poll_request(requesturi,
params = _params,
cookies = r.request._cookies,
headers = r.request.headers,
result_return_condition = (lambda r: r['result'] == 'OK'))
def format_tickets_data(data):
if not 'result' in data or not data['result'] == 'OK':
return data
paths = []
list = data['tp'][0]['list']
for route in list:
if 'brand' in route and route['brand']=='': del route['brand']
segment = {
'type' : 'Train',
'origin' : myutils.find_make_place(route['station0']),
'destination' : myutils.find_make_place(route['station1']),
'departure' : retarded_date_time_to_good(route['date0'], route['time0']),
'arrival' : retarded_date_time_to_good(route['date1'], route['time1']),
'duration' : int(retarded_duration_to_minutes(route['timeInWay'])),
'pricing' : get_pricing(route, data['tp'][0]),
'carrier' : {
'name' : route['carrier'],
'image' : 'http://pass.rzd.ru/images/logo/logo_rzd.gif',
'flightNumber' : route['number'] + ('' if not 'brand' in route else ' «'+route['brand']+'»'),
'code' : route['carrier']
}
}
paths.append({
'segments' : [segment]
})
return {
'route': {
'origin' : myutils.find_make_place(data['tp'][0]['from']),
'destination' : myutils.find_make_place(data['tp'][0]['where']),
'departure' : retarded_date_time_to_good(data['tp'][0]['date']),
'paths' : paths
}
}
def retarded_duration_to_minutes(rzd_duration):
"""Convert hours into minutes.
:param rzd_duration: '47:14'
:return: '2834'
"""
s = rzd_duration.split(':')
return str(int(s[0])*60 + int(s[1]))
def retarded_date_time_to_good(rzd_date, rzd_time = ''):
"""Convert rzd_date and rzd_time to normal dateTtime.
:param rzd_date: '29.12.2016'
:param rzd_time: '16:40'
:return: '2016-12-29T16:40:00'
"""
s = rzd_date.split('.')
date = s[2] + '-' + s[1] + '-' + s[0]
_time = rzd_time
if not _time == '':
_time = 'T' + _time + ':00'
return date + _time
def date_to_retarded_rzd_date(date):
"""Convert normal date to rzd_date.
:param date: '2016-12-29'
:return: '29.12.2016'
"""
s = date.split('-')
return s[2]+'.'+s[1]+'.'+s[0]
def get_pricing(route, tp):
res = []
link = ('https://pass.rzd.ru/timetable/public/ru?STRUCTURE_ID=735&refererPageId=704#dir=0|tfl=3|checkSeats=1|st0=№%20'+
urllib.parse.quote(route['number'])+
'|code0='+
urllib.parse.quote(str(tp['fromCode']))+
'|dt0='+
urllib.parse.quote(tp['date'])+
'|st1=|code1='+
urllib.parse.quote(str(tp['whereCode'])))
for car in route['cars']:
res.append({
'price' : float(car["tariff"]),
'currency' : 'RUB',
'link' : link,
'agent' : {
'name' : car["typeLoc"],
'image' : ''
}
})
return res