import urllib.request
import urllib.parse
import re
import datetime
import calendar
import os
import platform
import keyboard
if platform.system() == "Windows":
    platform = "cls"
else:
    platform = "clear"
def clear():
    os.system(platform)
def menu():
    print("")
    print("#######################")
    print("#1. refresh           #")
    print("#2. next day          #")
    print("#3. previous day      #")
    print("#4. exit program      #")
    print("#######################")
def replacediacritic(targetlist, replacewhat, withwhat):
    for i in range(len(targetlist)):
        if replacewhat in targetlist[i]:
            targetlist[i] = targetlist[i].replace (replacewhat,withwhat)
def replace_diacritics_list(targetlist, *positional_parameters, **keyword_parameters):
    replacediacritic(targetlist, "\\\\xe1", "á")
    replacediacritic(targetlist, "\\\\xe8", "č")
    replacediacritic(targetlist, "\\\\xc8", "Č")
    replacediacritic(targetlist, "\\\\x9a", "š")
    replacediacritic(targetlist, "\\\\xf8", "ř")
    replacediacritic(targetlist, "\\\\xed", "í")
    replacediacritic(targetlist, "\\\\xe9", "é")
    replacediacritic(targetlist, "\\\\xec", "ě")
    replacediacritic(targetlist, "\\\\x8a", "Š")
    replacediacritic(targetlist, "\\\\xf8", "ř")
    replacediacritic(targetlist, "\\\\xf9", "ů")
    replacediacritic(targetlist, "\\\\n*", "\n*")
    replacediacritic(targetlist, "\\\\n", "")
    replacediacritic(targetlist, "\\\\xfd", "ý")
    replacediacritic(targetlist, "\\\\x9e", "ž")
    replacediacritic(targetlist, "\\\\xdd", "Ý")
    replacediacritic(targetlist, "\\\\xda", "ú")
    if ('optional' in keyword_parameters):
        replacediacritic(targetlist, "1.hod", "\n 1.hod")
        replacediacritic(targetlist, "2.hod", "\n 2.hod")
        replacediacritic(targetlist, "3.hod", "\n 3.hod")
        replacediacritic(targetlist, "4.hod", "\n 4.hod")
        replacediacritic(targetlist, "5.hod", "\n 5.hod")
        replacediacritic(targetlist, "6.hod", "\n 6.hod")
        replacediacritic(targetlist, "7.hod", "\n 7.hod")
        replacediacritic(targetlist, "8.hod", "\n 8.hod")
        replacediacritic(targetlist, "9.hod", "\n 9.hod")
def checkweekday():
    global day
    global weekday
    if weekday == 6:
        print("today aint school")
        print("displaying supl for monday")
        day = day + 2
        weekday = 1
    elif weekday == 7:
        print("no school yet, but tommorow")
        print("displaying supl for monday")
        day = day + 1
        weekday = 1
def checkleapyear(inputyear):
    if calendar.isleap(inputyear):
        return 1


alldate = datetime.date.today()

global day
global month
global year
global weekday

day = alldate.day
month = alldate.month


weekday = datetime.date.isoweekday(alldate)

year = alldate.year
checkweekday()


        



values = {'s':'basics',
          'submit':'search'}
data = urllib.parse.urlencode(values)
data = data.encode('utf-8')



def getsupl():
    global day
    global month
    global year
    global weekday
    month = int(month)
    day = int(day)
    year = int(year)
    weekday = int(weekday)
    checkweekday()
    
    if month == (4 or 6 or 9 or 11):
        if day == 31:
            day = 1
            month = month + 1
    
    if month == 2:
        if checkleapyear(year) == 1 and int(day) == 30:
            day = 1
            month = month + 1
        elif day == 29:
            day = 1
            month = month + 1
    
    if day >= 32:
        day = 1
        month = month + 1
    elif day <= 0:
        if month == (4 or 6 or 9 or 11):
            day = 31
        else:
            day = 30
        month = month - 1
    if month >= 13:
        month = 1
        year = + 1
    elif month <= 0:
        month = 12
        year = year - 1
    if (month > 13) or (day > 32):
        print("test" + str(day) + str(month))
        print("an error occured, please send me an error report via email")
        raise SystemExit
    
    
    if day < 10:
        
        day = str(0) + str(day)
    if month < 10:
        
        month = str(0) + str(month)

    if year > 2000:    
        year = int(year) - 2000
    
    url = "http://rozvrh-suplovani.alej.cz/suplovani/su" + str(year) + str(month) + str(day) + ".htm" 

    clear()
    print("++++++++++++++++++++++++++++++++++++++++++++++++++++++")
    print("supl for: " + str(day) + "." + str(month) + ". 20" + str(year))
    print("++++++++++++++++++++++++++++++++++++++++++++++++++++++")
    print(url)
    print("++++++++++++++++++++++++++++++++++++++++++++++++++++++")


    
    req = urllib.request.Request(url, data)
    try:
        resp = urllib.request.urlopen(req)
    except:
        print("supl hasnt yet been made for this day or there is no school")
        menu()
        return
    
    respData = resp.read()
    supldataraw = re.findall(r'<p>  O4.A</p>(.*?)<td class="td_supltrid_3" width="11%"><p>  ',str(respData)) #change O4.A to your class
    supldataref = re.findall(r'<p>(.*?)</p>',str(supldataraw))
    supladditional = re.findall(r'<p class="textnormal_3">(.*?)</p>',str(respData))
    supladditional = re.findall(r'>(.*?)<',str(supladditional))
    
    if len(supldataraw) == 0:
        print("No supl today sadly :(")


    replace_diacritics_list(supldataref, optional = 1)
    replace_diacritics_list(supladditional)

    test = " ".join(supldataref)
    additional = " ".join(supladditional)

    print(test)
    print("")
    print(additional)
    menu()
getsupl()
while True:
    
    try:
        
        
        if keyboard.is_pressed('1'):
            getsupl()
        elif keyboard.is_pressed('2'):
            day = int(day) + 1
            weekday = weekday + 1
            
            getsupl()
        elif keyboard.is_pressed('3'):
            day = int(day) - 1
            weekday = weekday - 1
            
            getsupl()
        elif keyboard.is_pressed('4'):
            print("© Jarek 2018")
            raise SystemExit
        
    except ValueError:
        print("You may only enter numbers")