from tkinter import *

root = Tk()
root.geometry("700x300")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Contagem regressiva em números romanos")

titulo = Label(text="Contagem regressiva em números romanos",
               font=("Arial", "23", "bold"), bg="#103030", fg="#49e3e3")
titulo.place(relx=0.05, rely=0.05)

texto_sub1 = Label(text="Número :",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub1.place(relx=0.35, rely=0.32)

Numero = StringVar()
Numero_entrada = Entry(textvariable=Numero,
                       font=("Arial", "12", "bold"),
                       bg="white", fg="blue", justify='center')
Numero_entrada.place(relx=0.55, rely=0.33, relwidth=0.35)


def limpar():
    Numero_entrada.delete(0, END)
    resultado_texto.config(text="")


def int_to_roman(num):
    val = [
        1000, 900, 500, 400,
        100, 90, 50, 40,
        10, 9, 5, 4,
        1
    ]
    syms = [
        "M", "CM", "D", "CD",
        "C", "XC", "L", "XL",
        "X", "IX", "V", "IV",
        "I"
    ]
    roman_num = ""
    i = 0
    while num > 0:
        for _ in range(num // val[i]):
            roman_num += syms[i]
            num -= val[i]
        i += 1
    return roman_num


def app():
    try:
        num = int(Numero.get())
        if num <= 0:
            resultado_texto.config(text="Por favor, insira um número positivo!")
            return

        def countdown(i):
            if i >= 0:
                roman_num = int_to_roman(i)
                resultado_texto.config(text=roman_num)
                root.after(1000, countdown, i - 1)
            else:
                resultado_texto.config(text="Contagem finalizada!")

        countdown(num)
    except ValueError:
        resultado_texto.config(text="Valor digitado inválido!")


but1 = Button(text="Mostrar", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.1, rely=0.5, relwidth=0.25, relheight=0.1)

but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.4, rely=0.5, relwidth=0.25, relheight=0.1)

but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
                  font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.7, rely=0.5, relwidth=0.25, relheight=0.1)

resultado_texto = Label(text="",
                        font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.7, relwidth=0.9, relheight=0.25)

root.mainloop()