from tkinter import *
from tkinter import ttk

class AppConverter:
    def __init__(self):
        self.root = Tk()
        self.janela()
        self.frames_da_janela()
        self.widgets_frame1()
        self.Menus()
        self.root.mainloop()

    def janela(self):
        self.root.title("Conversor de Barril ↔ Litros")
        self.root.configure(background='#1e3743')
        self.root.geometry("500x400")
        self.root.resizable(0, 0)

    def frames_da_janela(self):
        self.frame_1 = Frame(self.root, bd=4,
                             bg='#dfe3ee',
                             highlightbackground='#759fe6',
                             highlightthickness=2)
        self.frame_1.place(relx=0.02, rely=0.02,
                           relwidth=0.96, relheight=0.96)

    def widgets_frame1(self):
        self.abas = ttk.Notebook(self.frame_1)

        self.Barril_para_Litros = Frame(self.abas, bg="#dfe3ee")
        self.Litros_para_Barril = Frame(self.abas, bg="#dfe3ee")

        self.abas.add(self.Barril_para_Litros, text="Barril → Litros")
        self.abas.add(self.Litros_para_Barril, text="Litros → Barril")
        self.abas.place(relx=0, rely=0, relwidth=0.98, relheight=0.98)

        # ----------- ABA 1: Barril → Litros -----------

        self.Barril = StringVar()

        Label(self.Barril_para_Litros,
              text="Número de Barris",
              bg='#dfe3ee', fg='#107db2',
              font=("Arial", 15, "bold")
              ).place(relx=0.05, rely=0.1)

        Entry(self.Barril_para_Litros,
              textvariable=self.Barril,
              justify='center',
              font=("Arial", 15, "bold")
              ).place(relx=0.45, rely=0.1, relwidth=0.45)

        Button(self.Barril_para_Litros,
               text="Calcular",
               bd=2, bg='#107db2', fg='white',
               font=('verdana', 12, 'bold'),
               command=self.butaoclick1
               ).place(relx=0.3, rely=0.3, relwidth=0.45, relheight=0.15)

        self.resultado_litros = StringVar()

        Label(self.Barril_para_Litros,
              text="Resultado em Litros",
              bg='#dfe3ee', fg='#107db2',
              font=("Arial", 15, "bold")
              ).place(relx=0.2, rely=0.55)

        Label(self.Barril_para_Litros,
              textvariable=self.resultado_litros,
              font=("Arial", 15, "bold"),
              bg='#dfe3ee'
              ).place(relx=0.05, rely=0.7, relwidth=0.9)

        # ----------- ABA 2: Litros → Barril -----------

        self.litros = StringVar()

        Label(self.Litros_para_Barril,
              text="Número de Litros",
              bg='#dfe3ee', fg='#107db2',
              font=("Arial", 15, "bold")
              ).place(relx=0.05, rely=0.1)

        Entry(self.Litros_para_Barril,
              textvariable=self.litros,
              justify='center',
              font=("Arial", 15, "bold")
              ).place(relx=0.45, rely=0.1, relwidth=0.45)

        Button(self.Litros_para_Barril,
               text="Calcular",
               bd=2, bg='#107db2', fg='white',
               font=('verdana', 12, 'bold'),
               command=self.butaoclick2
               ).place(relx=0.3, rely=0.3, relwidth=0.45, relheight=0.15)

        self.resultado_barris = StringVar()

        Label(self.Litros_para_Barril,
              text="Resultado em Barris",
              bg='#dfe3ee', fg='#107db2',
              font=("Arial", 15, "bold")
              ).place(relx=0.2, rely=0.55)

        Label(self.Litros_para_Barril,
              textvariable=self.resultado_barris,
              font=("Arial", 15, "bold"),
              bg='#dfe3ee'
              ).place(relx=0.05, rely=0.7, relwidth=0.9)

    # ----------- FUNÇÕES -----------

    def butaoclick1(self):
        try:
            barris = float(self.Barril.get())
            litros = barris * 159
            mensagem = f"{litros:.2f} litros"
        except ValueError:
            mensagem = "Valor inválido."
        self.resultado_litros.set(mensagem)

    def butaoclick2(self):
        try:
            litros = float(self.litros.get())
            barris = litros / 159
            mensagem = f"{barris:.4f} barris"
        except ValueError:
            mensagem = "Valor inválido."
        self.resultado_barris.set(mensagem)

    def Quit(self):
        self.root.destroy()

    def Menus(self):
        menubar = Menu(self.root)
        self.root.config(menu=menubar)

        filemenu = Menu(menubar, tearoff=0)
        menubar.add_cascade(label="Opções", menu=filemenu)
        filemenu.add_command(label="Sair", command=self.Quit)


AppConverter()