from tkinter import *
import math

root = Tk()
root.geometry("500x500")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Fórmula de Haversine ")
titulo = Label(text="Fórmula de Haversine",
               font=("Arial", "28", "bold"), bg="#103030", fg="#49e3e3")
titulo.place(relx=0.1, rely=0.05)

texto_sub1 = Label(text="Latitude",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub1.place(relx=0.35, rely=0.2)

texto_sub2 = Label(text="Longitude",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub2.place(relx=0.7, rely=0.2)

texto_sub3 = Label(text="Lugar 1",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub3.place(relx=0.05, rely=0.35)

texto_sub4 = Label(text="Lugar 2",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub4.place(relx=0.05, rely=0.5)

lat1 = StringVar()
lat1_entrada = Entry(textvariable=lat1,
                     font=("Arial", "12", "bold"),
                     bg="white", fg="blue", justify='center')
lat1_entrada.place(relx=0.35, rely=0.35, relwidth=0.2)

lat2 = StringVar()
lat2_entrada = Entry(textvariable=lat2,
                     font=("Arial", "12", "bold"),
                     bg="white", fg="blue", justify='center')
lat2_entrada.place(relx=0.35, rely=0.5, relwidth=0.2)

lon1 = StringVar()
lon1_entrada = Entry(textvariable=lon1,
                     font=("Arial", "12", "bold"),
                     bg="white", fg="blue", justify='center')
lon1_entrada.place(relx=0.73, rely=0.35, relwidth=0.2)

lon2 = StringVar()
lon2_entrada = Entry(textvariable=lon2,
                     font=("Arial", "12", "bold"),
                     bg="white", fg="blue", justify='center')
lon2_entrada.place(relx=0.73, rely=0.5, relwidth=0.2)


def limpar():
    lon2_entrada.delete(0, END)
    lon1_entrada.delete(0, END)
    lat2_entrada.delete(0, END)
    lat1_entrada.delete(0, END)
    resultado_texto.config(text="")


def app():
    try:
        Longitude1 = float(lon1.get())  # lon1 é o campo de entrada para Longitude1
        Longitude2 = float(lon2.get())  # lon2 é o campo de entrada para Longitude2
        Latitude1 = float(lat1.get())  # lat1 é o campo de entrada para Latitude1
        Latitude2 = float(lat2.get())  # lat2 é o campo de entrada para Latitude2

        R = 3959  # Raio da Terra em milhas

        lat1_rad = math.radians(Latitude1)
        lon1_rad = math.radians(Longitude1)
        lat2_rad = math.radians(Latitude2)
        lon2_rad = math.radians(Longitude2)

        dlat = lat2_rad - lat1_rad
        dlon = lon2_rad - lon1_rad

        a = math.sin(dlat / 2) ** 2 + math.cos(lat1_rad) * math.cos(lat2_rad) * math.sin(dlon / 2) ** 2
        c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a))

        distance = R * c
        mensagem = f"A distância é {distance:.2f} milhas"
        resultado_texto.config(text=mensagem)
    except ValueError:
        resultado_texto.config(text="Digitou um valor inválido!")


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()