from tkinter import *

root = Tk()
root.geometry("600x450")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Apostas de cavalo")

def validar_entrada(novo_valor):
    if novo_valor == "":
        return True
    try:
        valor = float(novo_valor)
        if valor < 0:
            return False
        return True
    except:
        return False

def atualizar_odd(opcao):
    if opcao == "Cavalo 1":
        valor_odd.config(text="2.0")
    elif opcao == "Cavalo 2":
        valor_odd.config(text="3.5")
    else:
        valor_odd.config(text="5.0")

def mostrar_resultado():
    try:
        aposta = float(Valor_aposta.get())
        odd = float(valor_odd.cget("text"))

        ganho = aposta * odd
        lucro = ganho - aposta

        resultado_texto.config(
            text=f"Ganho: {ganho:.2f}€ | Lucro: {lucro:.2f}€"
        )
    except:
        resultado_texto.config(text="Insere um valor válido!")

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

titulo = Label(text="Apostas de cavalo",
               font=("Arial", "28", "bold"),
               bg="#103030", fg="#49e3e3")
titulo.place(relx=0.23, rely=0.05)

texto_sub1 = Label(text="Valor da aposta (€):",
                   font=("Arial", "18", "bold"),
                   bg="#103030", fg="#49e3e3")
texto_sub1.place(relx=0.1, rely=0.2)

Valor_aposta = StringVar()

vcmd = (root.register(validar_entrada), "%P")

Valor_aposta_entrada = Entry(
    textvariable=Valor_aposta,
    font=("Arial", "12", "bold"),
    bg="white", fg="blue",
    justify='center',
    validate="key",
    validatecommand=vcmd
)
Valor_aposta_entrada.place(relx=0.5, rely=0.21, relwidth=0.35)
Valor_aposta_entrada.focus()

texto_sub2 = Label(text="Escolha a hipótese:",
                   font=("Arial", "18", "bold"),
                   bg="#103030", fg="#49e3e3")
texto_sub2.place(relx=0.08, rely=0.35)

texto_sub3 = Label(text="Odd:",
                   font=("Arial", "18", "bold"),
                   bg="#103030", fg="#49e3e3")
texto_sub3.place(relx=0.35, rely=0.5)

valor_odd = Label(text="",
                  font=("Arial", "18", "bold"),
                  bg="#103030", fg="#49e3e3")
valor_odd.place(relx=0.55, rely=0.5)

var = StringVar()

dropDownList = ["Cavalo 1", "Cavalo 2", "Cavalo 3"]
dropdown = OptionMenu(root, var, *dropDownList, command=atualizar_odd)
var.set(dropDownList[0])
dropdown.place(relx=0.55, rely=0.36, relwidth=0.36)

dropdown.config(background='#09A3BA', foreground="#FFFFFF",
                font=("Arial", "12", "bold"))
dropdown["menu"].config(background='#09A3BA', foreground="#FFFFFF",
                        font=("Arial", "12", "bold"))
but1 = Button(text="Mostrar", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'),
              command=mostrar_resultado)
but1.place(relx=0.1, rely=0.65, 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=0.65, 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=0.65, relwidth=0.25, relheight=0.1)


resultado_texto = Label(text="",
                        font=("Arial", 12, "bold"),
                        bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.8,
                      relwidth=0.9, relheight=0.15)

atualizar_odd(var.get())
root.mainloop()