from bs4 import BeautifulSoup
import requests
import datetime
import pytz

import workers.val
from classes import *

def getStation(name):
 return list(workers.val.validateName(name))[0]

def connRequest(frm, to, count = 3, time = datetime.datetime.now(), mode = False, details = False):
 outdate = datetime.datetime.strftime(time,"%d.%m.%Y")
 outtime = datetime.datetime.strftime(time,"%H:%M")

 url = "http://fahrplan.oebb.at/bin/query.exe/dn?start=1&S=%s&Z=%s&REQ0JourneyDate=%s&time=%s&REQ0HafasNumCons0=%s%s" % (frm.extid if frm.extid else frm.name, to.extid if to.extid else to.name, outdate, outtime, count, "&timesel=arrive" if mode else "")
 source = requests.get(url).text

 if "GO_conViewMode=outward" not in source:
  raise ValueError("No connection found.")

 juha = BeautifulSoup(source, "html5lib")
 
 if details:
  for a in juha.findAll("a"):
   if a.get("href") and "HWAI=CONNECTION$" in a.get("href"):
    dpage = a.get("href")

  ssource = requests.get(dpage).text
  suppe = BeautifulSoup(ssource, "html5lib")
  
  for i in range(0, count):
   cont = suppe.find("tr", id="trC0-%i" % i)
   if not cont:
    break

   buyurl = None

   for url in cont.findAll("a"):
    if url.get("href") and "https://tickets.oebb.at/de/ticket/ticket?" in url.get("href"):
     buyurl = url.get("href")

   conn = Connection(buyurl)

   lines = cont.findAll("tr", { "class": "tpDetails" })[1:]
   cdate = None

   for line in range(0, len(lines), 3):
    serv = lines[line:line + 3]
    dep = serv[0]
    arr = serv[1]
    det = serv[2]

    depst = list(workers.val.validateName(dep.find("td", { "class": "station" }).findAll("a")[0].string))[0]
    depdate = dep.find("td", { "class": "date" }).string.strip() or cdate
    deptime = dep.find("td", { "class": "timeValue" }).find("span").string.split()[1].strip()
    depprog = (dep.find("span", { "class": "prognosis" }).find("span") or dep.find("span", { "class": "prognosis" })).string.strip() or None
    depplat = (dep.find("td", { "class": "platform" }).find("span") or dep.find("td", { "class": "platform" })).string.strip() or None

    walk = dep.find("img", { "class": "product" }).get("src") == "/img/vs_oebb/fuss_pic.gif"
    name = dep.find("img", { "class": "product" }).get("alt") if not walk else "Walk"

    if not walk:
     purl = dep.find("td", { "class": "product" }).find("a").get("href")
     psource = requests.get(purl).text

     zuppa = BeautifulSoup(psource, "html5lib")
     dest = list(workers.val.validateName(zuppa.findAll("div", { "class": "block" })[2].text.split(":")[1].strip()))[0]
    
    arrst = list(workers.val.validateName(arr.find("td", { "class": "station" }).findAll("a")[0].string))[0]
    arrdate = (arr.find("td", { "class": "date" }).find("span") or arr.find("td", { "class": "date" })).string.strip() or depdate
    arrtime = arr.find("td", { "class": "timeValue" }).find("span").string.split()[1].strip()
    arrprog = (arr.find("span", { "class": "prognosis" }).find("span") or arr.find("span", { "class": "prognosis" })).string.strip() or None
    arrplat = (arr.find("td", { "class": "platform" }).find("span") or arr.find("td", { "class": "platform" })).string.strip() or None

    depts = datetime.datetime.strptime("%s %s" % (depdate, deptime), "%d.%m.%Y %H:%M")
    arrts = datetime.datetime.strptime("%s %s" % (arrdate, arrtime), "%d.%m.%Y %H:%M")

    depprog = deptime if depprog == "pünktlich" else depprog
    arrprog = arrtime if arrprog == "pünktlich" else arrprog

    cdate = arrdate

    svc = Service(name, depst, depts, arrst, arrts, dest, depplat, depprog, arrplat, arrprog)
    conn.addService(svc)

   yield conn

 else:
  for i in range(0, count):
   det = juha.find("tr", id="trOverviewC0-%i" % i)
   if not det:
    break

   stations = det.find("td", { "class": "station" }).findAll("div")
   depst = getStation(stations[0].text.strip())
   arrst = getStation(stations[-1].text.strip())

   dates = det.find("td", { "class": "date" }).text.split()
   depdate = dates[0]
   try:
    arrdate = dates[1]
   except:
    arrdate = depdate

   times = det.find("div", { "class": "planed" }).text
   deptime = times.split()[0]
   arrtime = times.split()[2]

   projections = det.find("div", { "class": "prognosis" })
   curdep = None
   curarr = None

   depts = datetime.datetime.strptime("%s %s" % (depdate, deptime), "%d.%m.%Y %H:%M")
   arrts = datetime.datetime.strptime("%s %s" % (arrdate, arrtime), "%d.%m.%Y %H:%M")

   name = "/".join([img.get("title") for img in det.findAll("img", { "class": "product" })])

   ticketurl = det.find("td", { "class": "fares" }).find("a").get("href")

   svc = Service(name, depst, depts, arrst, arrts, currdep = curdep, curarr = curarr)
   con = Connection(ticketurl)

   con.addService(svc)

   yield con

def worker(frm, to, count = 3, time = datetime.datetime.now(pytz.timezone("Europe/Vienna")), mode = False, details = False):
 conns = connRequest(getStation(frm), getStation(to), count, time, mode, details)
 i = 0

 output = """<?xml version="1.0" encoding="UTF-8"?>
<connections>
"""

 for conn in conns:
  hrs, scs = divmod(conn.duration().total_seconds(), 3600)
  mns, rmd = divmod(scs, 60)

  chg = max(len([service for service in conn.services if service.name != "Walk"]) - 1, 0) if details else max(len([service for service in conn.services[0].name.split("/") if service != "Walk"]) - 1, 0)

  ddt = datetime.datetime.strftime(conn.deptime(), "%d.%m.%Y")
  dtm = datetime.datetime.strftime(conn.deptime(), "%H:%M")

  adt = datetime.datetime.strftime(conn.arrtime(), "%d.%m.%Y")
  atm = datetime.datetime.strftime(conn.arrtime(), "%H:%M")

  output += """ <connection id='%i'>
  <from>
   <name>%s</name>
   <id>%s</id>
  </from>
  <to>
   <name>%s</name>
   <id>%s</id>
  </to>
  <details>
   <departure>
    <date>%s</date>
    <time>%s</time>
   </departure>
   <arrival>
    <date>%s</date>
    <time>%s</time>
   </arrival>
   <duration>%s</duration>
   <changes>%i</changes>
  </details>
  <services>
""" % (i, conn.depst().name, conn.depst().useId(), conn.arrst().name, conn.arrst().useId(), ddt, dtm, adt, atm, "%i:%i" % (hrs, mns), chg)

  j = 0

  for service in conn.services:
   output += """   <service id='%i'>
    <name>%s</name>
    <departure>
     <station>
      <name>%s</name>
      <id>%s</id>
     </station>
     <date>%s</date>
     <time>%s</time>
""" % (j, service.name, service.depst.name, service.depst.useId(), datetime.datetime.strftime(service.deptime,"%d.%m.%Y"), datetime.datetime.strftime(service.deptime, "%H:%M"))

   if service.currdep:
    output += "     <current>%s</current>\n" % service.currdep

   if service.deppf:
    output += "     <platform>%s</platform>\n" % service.deppf

   output += """    </departure>
    <arrival>
     <station>
      <name>%s</name>
      <id>%s</id>
     </station>
     <date>%s</date>
     <time>%s</time>
""" % (service.arrst.name, service.arrst.useId(), datetime.datetime.strftime(service.arrtime, "%d.%m.%Y"), datetime.datetime.strftime(service.arrtime, "%H:%M"))

   if service.curarr:
    output += "     <current>%s</current>\n" % service.curarr

   if service.arrpf:
    output += "     <platform>%s</platform>\n" % service.arrpf

   output += """    </arrival>
   </service>
"""

   j += 1

  output += """  </services>
 </connection>
"""

  i += 1

 output += """</connections>"""

 return output