import math


class Key:
    how_many_keys = 0

    # Initialisierung eines Schlüssels
    def __init__(self, keynumber):
        self.number = keynumber
        self.possessor = "Reception"

    #where are the keys
    def status_key(self, keynumber=None):
        return self.number, self.possessor
        
    def hand_out_key(self, keynumber, Guest):
        self.possessor = Guest

    def get_back_key(self, keynumber):
        self.possessor = "Reception"

key_list = []
for i in range(11, 42, 10):
    a = "key_" + str(i) + " = Key(" + str(i) + ")"
    exec(a)
    a2 = "key_list.append(key_" + str(i) + ")"
    exec(a2)
    
    b = "key_" + str(i+1) + " = Key(" + str(i+1) + ")"
    exec(b)
    b2 = "key_list.append(key_" + str(i+1) + ")"
    exec(b2)





class Client():
    months = ['Januar', 'Februar','März','April', 'Mai', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember']
    all_clients[]
    clients = 0
    def __init__(self, name: str, surname: str, client_num: int, room_num: int, period, key_num: int, bookings, status: bool):
        self.name = name
        self.surname = surname
        self.client_num = client_num
        self.room_num = room_num
        self.period = period
        self.key_num = key_num
        self.bookings = bookings
        self.status = status

        # Automatic status adjustment
        if len(self.bookings) >= 4:
            self.status = True
        Client.clients += 1
    
    def change_room(self, surname, room_num = 0, key_num = 0): # Room add period 
        self.room_num = room_num
        num_ = "key_" + str(key_num) + ".hand_out_key(" + str(key_num) + "," + "'" + str(surname) + "')"
        try:
            exec(num_)
            self.key_num = key_num
        except:
            ("Schlüssel mit Daten nicht gefunden.")

    def name_change(self, name, surname):
        self.name = name
        self.surname = surname

        # Length of stay as print
    def period_print(self):
        stay_period = []
        num_string = ""
        for i in self.period:
            if i.isnumeric():
                num_string += i
            if i == ",":
                stay_period.append(num_string)
                num_string = ""
        
        stay_period.append(num_string)

        print(stay_period)
        stay_period = tuple(stay_period)
        # Same month
        if stay_period[1] == stay_period[3]:
            days = int(stay_period[0]) - int(stay_period[2])
            month_num = int(stay_period[1]) + 1
            month_print = Client.months[month_num]
            print("Der Kunde bleibt", abs(days), "Tage.")
            print("Vom", stay_period[0], "bis", stay_period[2], month_print)
        # Across months
        if stay_period[1] != stay_period[3]:
            # Stay period more than 1 month
            if int(stay_period[3]) - int(stay_period[1]) > 1:
                days = 28 - int(stay_period[0]) + int(stay_period[2]) + \
                       ((int(stay_period[3]) - int(stay_period[1])-1) * 28)
            # Stay period 
            else:
                days = 28 - int(stay_period[0]) + int(stay_period[2])
    
            month_num_1 = int(stay_period[1]) - 1
            month_num_2 = int(stay_period[3]) - 1
            month_print_1 = Client.months[month_num_1]
            month_print_2 = Client.months[month_num_2]
            print("Der Kunde bleibt", abs(days), "Tage.")
            print("Vom", stay_period[0], month_print_1, "bis", stay_period[2], month_print_2)


        # Client information
    def info(self, action = None):
        dic_ = {"Name" : self.name,
                "Nachname" : self.surname,
                "Kundennummer" : self.client_num,
                "Zimmernummer" : self.room_num,
                "Aufenthaltsdauer": self.period,
                "Schlüsselnummer" : self.key_num,
                "Buchungen" : self.bookings,
                "VIP-Status" : self.status
                }
        if action != None:
            # If asked client information is stay period
            if action == "Aufenthaltsdauer":
                client_num = self.client_num
                stay = str(client_num)+ ".period_print()"
                exec(stay)
            # If asked client information is different
            if action != "Aufenthaltsdauer":
                for i in dic_:
                    if i == action:
                        print(action, "ist", dic_[i])
        else:
            for i in dic_:
                print(i.ljust(16), ": ", dic_[i])
            


w43 = Client("David", "Gebert", "w43", 0, "01,02,03,03", 22, (51,61,77), False)
w43.period_print()