def delete_donor(cursor):
     while True:
         try:
             cursor.execute("SELECT UniqueId FROM Donor;")
             data = cursor.fetchall()
             ids = [i[0] for i in data]
             print(ids, "(0) Cancel")
             user_input = input("Enter donor's ID or passport number: ").upper()
             if user_input == '0':
                 clear()
                 break
             elif not Validate.validate_id(user_input):
                 print("\n\tWrong ID or Passport number, enter a real value")
                 time.sleep(2)
                 clear()
                 continue
             elif user_input not in ids:
                 print("\n\tID is valid, but there is no entry with this ID yet.")
                 time.sleep(2)
                 clear()
                 continue
             else:
                 print("Deleting entry...")
                 cursor.execute("DELETE FROM Donor WHERE UniqueId = '{}';".format(user_input))
                 time.sleep(1)
             print("Done!")
             input()
             clear()
             break
         except Exception as e:
             print(e)
             print("\n\t! ! !  Belso Error ! ! ! ")
             input()
             clear()

 def update_progressbar(self, dt):
     """Updating progress bar and activating validation."""
     if self.progress != 100 and self.progress != -1:
         self.progress += 1
         self.status = 'Validating: {}%'.format(int(self.progress))
     elif self.progress == 100:
         check = Validate.ksvalidate(self.kstext)
         self.progress = -1
         self.status = check

    def add_new_donation_event(cursor_object):
        print("Adding new event...\n")
        time.sleep(1)
        clear()
        e1 = Event()
        while True:
            e1.date_of_event = input("Date of Event: ")
            if Validate.validate_date(e1.date_of_event) and e1.registration_in_tendays():
                pass
            else:
                print("\n\t ! The registration should be at least 10 days from now. ! ")
                print("\t   ! Use this format to enter date: 'YYYY.MM.DD' ! \n")
                time.sleep(2)
                clear()
                continue

            e1.start_time = EventManagerDB.data_into_event_object(e1, Validate.validate_time, "Start Time: ", TIME_ERR)
            e1.end_time = EventManagerDB.data_into_event_object(e1, Validate.validate_time, "End Time: ", TIME_ERR)
            while not e1.is_starttime_before_endtime():
                print("\n\t ! The starting time should be before the ending time. ! ")
                time.sleep(2)
                clear()
                e1.end_time = ""
                e1.end_time = EventManagerDB.data_into_event_object(e1, Validate.validate_time, "End Time: ", TIME_ERR)

            e1.zip_code = EventManagerDB.data_into_event_object(e1, Validate.validate_zipcode, "ZIP code: ", ZIP_ERR)
            e1.city = EventManagerDB.data_into_event_object(e1, Validate.validate_city_name, "City: ", CITY_ERR)
            e1.address = EventManagerDB.data_into_event_object(e1, Validate.validate_address, "Address of event: ", ADDRESS_ERR)
            e1.available_beds = EventManagerDB.data_into_event_object(e1, Validate.validate_positive_int, "Available beds: ", POSINT_ERR)
            e1.planned_donor_number = EventManagerDB.data_into_event_object(e1, Validate.validate_positive_int, "Planned donor number: ", POSINT_ERR)

            e1.successfull = EventManagerDB.data_into_event_object(e1, Validate.validate_positive_int, "\n How many successfull donation was on the event?\n > ", POSINT_ERR)

            print("\nThe required functions: \n")

            print("Weekday :", e1.is_weekday())
            e1.duration = e1.calculate_duration()
            print("Duration: {} min  --  {} hours ".format(e1.duration, round(e1.duration/60, 1)))
            print("Maximum donor number:", e1.max_donor_number())
            print("Success rate: {}".format(e1.success_rate()))
            input("\n\n (Press ENTER to go BACK)")
            EventManagerDB.store_donation_data(e1, cursor_object)
            clear()
            break

 def delete_donor():
     while True:
         try:
             with open("Data/donors.csv", "r") as f:
                 content = []
                 for line in f:
                     content.append(line.strip())
             ids = [content[i].split(",")[6] for i in range(len(content)) if i != 0]
             print(ids, "(0) Cancel")
             user_input = input("Enter donor's ID or passport number: ").upper()
             if user_input == "0":
                 clear()
                 break
             elif not Validate.validate_id(user_input):
                 print("\n\tWrong ID or Passport number, enter a real value")
                 time.sleep(2)
                 clear()
                 continue
             elif user_input not in ids:
                 print("\n\tID is valid, but there is no entry with this ID yet.")
                 time.sleep(2)
                 clear()
                 continue
             else:
                 print("Deleting entry...")
                 with open("Data/donors.csv", "w") as f:
                     for line in content:
                         if user_input != line.split(",")[6]:
                             f.write(line + "\n")
                 time.sleep(1)
             print("Done!")
             input()
             clear()
             break
         except Exception as e:
             print(e)
             print("\n\t! ! !  Belso Error ! ! ! ")
             input()
             clear()

 def test_ofalse(self):
     self.assertFalse(Validate.validate_blood_type("O+"))

 def test_null(self):
     self.assertFalse(Validate.validate_blood_type("0"))

 def test_time_too_much_min(self):
     self.assertFalse(Validate.validate_time('15:60'))

 def test_number(self):
     self.assertFalse(Validate.validate_city_name("29"))

 def test_azavarosupper(self):
     self.assertTrue(Validate.validate_city_name("SZERENCS"))

 def test_nothing(self):
     self.assertFalse(Validate.validate_blood_type(""))

 def test_nuber(self):
     self.assertFalse(Validate.validate_positive_int("-15"))

 def test_string(self):
     self.assertFalse(Validate.validate_positive_int("hsvee"))

 def test_positive(self):
     self.assertTrue(Validate.validate_positive_int("42"))

 def test_time_valid(self):
     self.assertTrue(Validate.validate_time('12:35'))

 def test_time_nothing(self):
     self.assertFalse(Validate.validate_time(''))

 def test_time_wrong_divider(self):
     self.assertFalse(Validate.validate_time('15.40'))

 def test_a(self):
     self.assertFalse(Validate.validate_blood_type("A"))

 def test_long(self):
     self.assertFalse(Validate.validate_blood_type("ggsiiuh sv448hg hsuh94"))

 def test_azavaroslower(self):
     self.assertTrue(Validate.validate_city_name("miskolc"))

 def test_bpluslower(self):
     self.assertTrue(Validate.validate_blood_type("b+"))