from datetime import date, timedelta, datetime
from tkinter import *
from tkinter import ttk

def julian_to_gregorian(j_date):
    year = j_date.year
    if year <= 1582:
        diff = 10
    elif year <= 1700:
        diff = 10
    elif year <= 1800:
        diff = 11
    elif year <= 1900:
        diff = 12
    elif year <= 2100:
        diff = 13
    else:
        diff = 14
    return j_date + timedelta(days=diff)


def gregorian_to_julian(g_date):
    year = g_date.year
    if year <= 1582:
        diff = 10
    elif year <= 1700:
        diff = 10
    elif year <= 1800:
        diff = 11
    elif year <= 1900:
        diff = 12
    elif year <= 2100:
        diff = 13
    else:
        diff = 14
    return g_date - timedelta(days=diff)
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 Juliano ↔ Gregoriano")
        self.root.configure(background='#1e3743')
        self.root.geometry("500x300")
        self.root.resizable(False, False)

    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.Conversor_Juliano_Gregoriano = Frame(self.abas, background="#dfe3ee")
        self.Conversor_Gregoriano_Juliano = Frame(self.abas, background="#dfe3ee")

        self.abas.add(self.Conversor_Juliano_Gregoriano, text="Juliano  → Gregoriano")
        self.abas.add(self.Conversor_Gregoriano_Juliano, text="Gregoriano → Juliano")
        self.abas.place(relx=0, rely=0, relwidth=0.98, relheight=0.98)

        # --- JULIANO → GREGORIANO ---
        self.data1 = StringVar()
        self.resultado_gre = StringVar()

        Label(self.Conversor_Juliano_Gregoriano, text="Data Juliana (dd/mm/aaaa):", bg='#dfe3ee', fg='#107db2',
              font=("Arial", 14, "bold")).place(relx=0.05, rely=0.05)
        Entry(self.Conversor_Juliano_Gregoriano, textvariable=self.data1, justify='center',
              font=("Arial", 14)).place(relx=0.05, rely=0.15, relwidth=0.9)

        Button(self.Conversor_Juliano_Gregoriano, text="Converter", bd=2, bg='#107db2', fg='white',
               font=('verdana', 12, 'bold'), command=self.calcular_juliano_para_gregoriano).\
            place(relx=0.3, rely=0.45, relwidth=0.45, relheight=0.2)

        Label(self.Conversor_Juliano_Gregoriano, text="Data Gregoriana:", bg='#dfe3ee', fg='#107db2',
              font=("Arial", 14, "bold")).place(relx=0.05, rely=0.73)
        Label(self.Conversor_Juliano_Gregoriano, textvariable=self.resultado_gre,
              font=("Arial", 14, "bold"), bg="#dfe3ee").place(relx=0.45, rely=0.73, relwidth=0.45)

        # --- GREGORIANO → JULIANO ---
        self.data2 = StringVar()
        self.resultado_jul = StringVar()

        Label(self.Conversor_Gregoriano_Juliano, text="Data Gregoriana (dd/mm/aaaa):", bg='#dfe3ee', fg='#107db2',
              font=("Arial", 14, "bold")).place(relx=0.05, rely=0.05)
        Entry(self.Conversor_Gregoriano_Juliano, textvariable=self.data2, justify='center',
              font=("Arial", 14)).place(relx=0.05, rely=0.15, relwidth=0.9)

        Button(self.Conversor_Gregoriano_Juliano, text="Converter", bd=2, bg='#107db2', fg='white',
               font=('verdana', 12, 'bold'),
               command=self.calcular_gregoriano_para_juliano).place(relx=0.3, rely=0.45, relwidth=0.45, relheight=0.2)

        Label(self.Conversor_Gregoriano_Juliano, text="Data Juliana:", bg='#dfe3ee', fg='#107db2',
              font=("Arial", 14, "bold")).place(relx=0.05, rely=0.73)
        Label(self.Conversor_Gregoriano_Juliano, textvariable=self.resultado_jul,
              font=("Arial", 14, "bold"), bg="#dfe3ee").place(relx=0.45, rely=0.73, relwidth=0.45)

    # --- Funções de cálculo ---
    def calcular_juliano_para_gregoriano(self):
        try:
            data = datetime.strptime(self.data1.get(), "%d/%m/%Y").date()
            resultado = julian_to_gregorian(data)
            self.resultado_gre.set(resultado.strftime("%d/%m/%Y"))
        except Exception:
            self.resultado_gre.set("Erro na data")

    def calcular_gregoriano_para_juliano(self):
        try:
            data = datetime.strptime(self.data2.get(), "%d/%m/%Y").date()
            resultado = gregorian_to_julian(data)
            self.resultado_jul.set(resultado.strftime("%d/%m/%Y"))
        except Exception:
            self.resultado_jul.set("Erro na data")

    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()