from math import *
from tkinter import *
from tkinter import messagebox
from math import *


def transfer():
    num = inp_window.get()
    bastard = '0123456789ABCDEF-.'
    bastard_1 = '0123456789-.'
    for i in range(len(num)):
        if not(num[i] in bastard_1):
            messagebox.showerror("Ошибка ввода", "Введены символы, которых "
                                                 "нет в десятичной "
                                                 "системе счисления.")
            inp_window.delete(0, END)
            return

    if '.' in num:
        num_1 = ''
        num_2 = ''
        i = 0
        while num[i] != '.':
            num_1 += num[i]
            i += 1
        for j in range(i + 1, len(num)):
            num_2 += num[j]

        num_1 = int(num_1)
        result_1 = ''
        while num_1:
            num_1, residue = divmod(num_1, 16)
            result_1 = bastard[residue] + result_1

        num_2 = '0.' + num_2
        num_2 = float(num_2)
        print(num_2)
        result_2 = ''
        while len(result_2) < 6:
            temp = num_2 * 16
            result_2 = result_2 + bastard[int(temp)]
            num_2 = temp - int(temp)
        result = result_1 + '.' + result_2

    else:
        num = int(num)
        result = ''
        while num:
            num, residue = divmod(num, 16)
            result = bastard[residue] + result

    inp_window.delete(0, END)
    inp_window.insert(END, result)


def retroversion():
    num = inp_window.get()
    bastard = '0123456789ABCDEF-.'
    thing = 'ABCDEF'
    for i in range(len(num)):
        if not(num[i] in bastard):
            messagebox.showerror("Ошибка ввода", "Введены символы, которых "
                                                 "нет в шестнадцатеричной "
                                                 "системе счисления.")
            inp_window.delete(0, END)
            return

    if '.' in num:
        num_1 = ''
        num_2 = ''
        i = 0
        while num[i] != '.':
            num_1 += num[i]
            i += 1
        for j in range(i + 1, len(num)):
            num_2 += num[j]

        total_1 = 0
        for i in range(len(num_1) - 1, -1, -1):
            if num_1[i] in thing:
                total_1 += (10 + thing.index(num_1[len(num_1) - 1 - i])) * pow(
                    16, i)
            else:
                total_1 += int(num_1[len(num_1) - 1 - i]) * pow(16, i)

        total_2 = 0
        for i in range(len(num_2)):
            if num_2 in thing:
                total_2 += (10 + thing.index(num_2[i])) * pow(16, -(i + 1))
            else:
                total_2 += int(num_2[i]) * pow(16, -(i + 1))
        result = str(int(total_1)) + str(total_2)[1:]
    else:
        total = 0
        for i in range(len(num) - 1, -1, -1):
            if num[i] in thing:
                total += (10 + thing.index(num[len(num) - 1 - i])) * pow(16, i)
            else:
                total += int(num[len(num) - 1 - i]) * pow(16, i)
        result = str(int(total))

    inp_window.delete(0, END)
    inp_window.insert(END, result)


def information():
    messagebox.showinfo("Информация", "Программа: перевод чисел из "
                        "десятичной системы счисления в "
                        "шестнадцатеричную и обратно." + "\n" +
                        "Разработал: Кишов Гаджи. ИУ7-23Б.")


def clear():
    global action
    inp_window.delete(0, END)
    action = 'inp_window.delete(0, END)'


def insert(numeral):
    global action
    inp_window.insert(END, numeral)
    action = 'inp_window.insert(END, ' + str(numeral) + ')'


def delete_last():
    global action
    inp_window.delete(len(inp_window.get()) - 1, END)
    action = 'inp_window.delete(len(inp_window.get()) - 1, END)'


def action_repeat():
    exec(action)


# Поля ввода
action = ''
root = Tk()
root.title('Калькулятор')
root.geometry('285x300')

inp = StringVar()
inp_window = Entry(root, textvariable = inp, justify = LEFT, font = (
    "Arial", 15))
inp_window.place(x = 15, y = 45, width = 255, height = 25)
inp_window.focus()

one = Button(root, text='1', command=lambda: insert('1'))
one.place(x=15, y=100, width=30, height=30)

two = Button(root, text='2', command=lambda: insert('2'))
two.place(x=60, y=100, width=30, height=30)

three = Button(root, text='3', command=lambda: insert('3'))
three.place(x=105, y=100, width=30, height=30)

four = Button(root, text='4', command=lambda: insert('4'))
four.place(x=150, y=100, width=30, height=30)

A = Button(root, text='A', command=lambda: insert('A'))
A.place(x=195, y=100, width=30, height=30)

D = Button(root, text='D', command=lambda: insert('D'))
D.place(x=240, y=100, width=30, height=30)

five = Button(root, text='5', command=lambda: insert('5'))
five.place(x=15, y=140, width=30, height=30)

six = Button(root, text='6', command=lambda: insert('6'))
six.place(x=60, y=140, width=30, height=30)

seven = Button(root, text='7', command=lambda: insert('7'))
seven.place(x=105, y=140, width=30, height=30)

eight = Button(root, text='8', command=lambda: insert('8'))
eight.place(x=150, y=140, width=30, height=30)

B = Button(root, text='B', command=lambda: insert('B'))
B.place(x=195, y=140, width=30, height=30)

E = Button(root, text='E', command=lambda: insert('E'))
E.place(x=240, y=140, width=30, height=30)

nine = Button(root, text='9', command=lambda: insert('9'))
nine.place(x=15, y=180, width=30, height=30)

zero = Button(root, text='0', command=lambda: insert('0'))
zero.place(x=60, y=180, width=30, height=30)

C = Button(root, text='C', command=lambda: insert('C'))
C.place(x=195, y=180, width=30, height=30)

F = Button(root, text='F', command=lambda: insert('F'))
F.place(x=240, y=180, width=30, height=30)

dot = Button(root, text='.', command=lambda: insert('.'))
dot.place(x=105, y=180, width=30, height=30)

minus = Button(root, text='-', command=lambda: insert('-'))
minus.place(x=150, y=180, width=30, height=30)

to_ten = Button(root, text='В десятичную', command=retroversion)
to_ten.place(x=15, y=235)

to_sixteen = Button(root, text='В шестнадцатеричную', command=transfer)
to_sixteen.place(x=115, y=235, width = 167)

delete = Button(root, text='Удалить все', command=clear)
delete.place(x=15, y=265, width = 87)

back = Button(root, text='Удалить последний элемент', command=delete_last)
back.place(x=115, y=265)

# Меню
main = Menu(root)
root.config(menu=main)
main.add_command(label='Информация', command=information)
main.add_command(label='Повторение действия',
                 command=action_repeat)
root.mainloop()