from tkinter import *

# Dicionário com valores MET
valores_met = {
    "Caminhada": 3.5,
    "Corrida": 7.0,
    "Bicicleta": 6.0,
    "Saltar à corda": 10.0
}

root = Tk()
root.geometry("700x500")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Calculadora de Calorias Queimadas")

titulo = Label(
    text="Calculadora de Calorias Queimadas",
    font=("Arial", "28", "bold"), bg="#103030", fg="#49e3e3"
)
titulo.place(relx=0.1, rely=0.05, relwidth=0.8)

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

texto_sub2 = Label(
    text="Tempo de exercício (em minutos):",
    font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3"
)
texto_sub2.place(relx=0.05, rely=0.5)

texto_sub3 = Label(
    text="Exercício:",
    font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3"
)
texto_sub3.place(relx=0.35, rely=0.2)

Tempo = StringVar()
Tempo_entrada = Entry(
    textvariable=Tempo,
    font=("Arial", "12", "bold"),
    bg="white", fg="blue", justify='center'
)
Tempo_entrada.place(relx=0.65, rely=0.5, relwidth=0.28)

Peso = StringVar()
Peso_entrada = Entry(
    textvariable=Peso,
    font=("Arial", "12", "bold"),
    bg="white", fg="blue", justify='center'
)
Peso_entrada.place(relx=0.65, rely=0.35, relwidth=0.28)
Peso_entrada.focus()

var = StringVar()
dropDownList = list(valores_met.keys())
dropdown = OptionMenu(root, var, *dropDownList)
var.set(dropDownList[0])
dropdown.place(relx=0.55, rely=0.2, relwidth=0.35)
dropdown.config(
    background='#09A3BA', foreground="#FFFFFF",
    font=("Arial", "18", "bold")
)
dropdown["menu"].config(
    background='#09A3BA', foreground="#FFFFFF",
    font=("Arial", "18", "bold")
)

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

def app():
    try:
        peso = float(Peso.get())
        tempo = int(Tempo.get())
        v = var.get()
        met = valores_met.get(v)

        if met is None:
            resultado_texto.config(text="Exercício inválido.")
            return

        calorias = met * peso * tempo * 0.0175
        plural = "minuto" if tempo == 1 else "minutos"
        resultado_texto.config(
            text=f"Queimou aproximadamente {calorias:.2f} calorias\n"
                 f"durante {tempo} {plural} de {v.lower()}."
        )
    except ValueError:
        resultado_texto.config(text="Por favor, digite apenas números válidos para peso e tempo.")

but1 = Button(
    text="Calcular", bd=2, bg='#107db2', fg='white',
    font=('verdana', 12, 'bold'), command=app
)
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)

root.mainloop()