import os
import customtkinter as ctk
import pytz
from skyfield.api import Loader
from skyfield import almanac

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

class Menu17App(ctk.CTk):
    def __init__(self):
        super().__init__()
        self.title("Equinox & Solstice Calculator (Modul 17)")
        self.geometry("700x400")
        ctk.set_appearance_mode("Dark")
        
        self.load_obj = Loader(BASE_DIR)
        self.eph = self.load_obj('de421.bsp')
        self.ts = self.load_obj.timescale()
        self.setup_ui()

    def setup_ui(self):
        self.sidebar = ctk.CTkFrame(self, width=200)
        self.sidebar.pack(side="left", fill="y", padx=10, pady=10)
        
        self.entry_y = ctk.CTkEntry(self.sidebar, placeholder_text="Tahun (Masehi)")
        self.entry_y.insert(0, "2026")
        self.entry_y.pack(pady=20, padx=10)
        
        ctk.CTkButton(self.sidebar, text="▶ HITUNG MUSIM", command=self.hitung).pack(pady=10)
        self.textbox = ctk.CTkTextbox(self, font=("Consolas", 14))
        self.textbox.pack(side="right", fill="both", expand=True, padx=10, pady=10)

    def hitung(self):
        self.textbox.delete("1.0", "end")
        try: y = int(self.entry_y.get())
        except ValueError: return
        
        t0 = self.ts.utc(y, 1, 1)
        t1 = self.ts.utc(y, 12, 31)
        t_seasons, y_seasons = almanac.find_discrete(t0, t1, almanac.seasons(self.eph))
        
        tz_wib = pytz.timezone('Asia/Jakarta')
        musim_nama = [
            "Vernal Equinox (Musim Semi Utara)", 
            "Summer Solstice (Musim Panas Utara)", 
            "Autumnal Equinox (Musim Gugur Utara)", 
            "Winter Solstice (Musim Dingin Utara)"
        ]
        
        report = f"[ Equinox & Solstice Calculator ]\n{'='*60}\n"
        for t_ev, y_ev in zip(t_seasons, y_seasons):
            dt_wib = t_ev.utc_datetime().replace(tzinfo=pytz.utc).astimezone(tz_wib)
            report += f">> {musim_nama[y_ev]:<38} : {dt_wib.strftime('%d %B %Y %H:%M:%S WIB')}\n"
            
        self.textbox.insert("end", report)

if __name__ == "__main__":
    app = Menu17App()
    app.mainloop()