import tkinter as tk
from tkinter import filedialog, messagebox
import os
import json
import datetime

config_file = "config.json"

def load_last_path():
    if os.path.exists(config_file):
        with open(config_file, "r") as f:
            config = json.load(f)
            return config.get("last_path", os.path.join(os.path.join(os.environ['USERPROFILE']), 'Desktop'))
    return os.path.join(os.path.join(os.environ['USERPROFILE']), 'Desktop')

def save_last_path(path):
    with open(config_file, "w") as f:
        json.dump({"last_path": path}, f)

last_path = load_last_path()

def on_open():
    global last_path
    file_paths = filedialog.askopenfilenames(
        initialdir=last_path,
        filetypes=[("DBC files", "*.dbc"), ("All files", "*.*")]
    )
    if file_paths:
        last_path = os.path.dirname(file_paths[0])
        save_last_path(last_path)
        
        existing_files = [chk.cget("text") for chk in file_listbox_inner.winfo_children() if isinstance(chk, tk.Checkbutton)]
        
        for file_path in file_paths:
            file_name = os.path.basename(file_path)
            if file_name in existing_files:
                messagebox.showwarning("경고", f"동일한 파일이 존재합니다 \n\n {file_name}")
            else:
                var = tk.BooleanVar()
                chk = tk.Checkbutton(file_listbox_inner, text=file_name, variable=var, anchor='w', bg=file_listbox.cget("bg"))
                chk.var = var
                chk.pack(anchor='w', fill=tk.X, padx=5, pady=2)
                separator = tk.Frame(file_listbox_inner, height=1, bg="gray", width=760)
                separator.pack(fill=tk.X, padx=5, pady=2)
        
        setList(file_paths, file_listbox_inner)

def setList(file_paths, tree):
    for file_path in file_paths:
        dir, file = os.path.split(file_path)
        fsize = os.path.getsize(file_path)
        mtime = os.path.getmtime(file_path)
        mtimestamp = datetime.datetime.fromtimestamp(int(mtime))

        tree.insert('', 'end', values=(file, file, dir, str(fsize), str(mtimestamp)))

def on_exit():
    root.destroy()

root = tk.Tk()
root.title("DBC to C Converter")
root.geometry("1000x800")  # 창 크기 설정

# ...existing code...

top_frame = tk.Frame(root)
top_frame.pack(side=tk.TOP, anchor="ne")

convert_button = tk.Button(top_frame, text="변환")
convert_button.pack(side=tk.RIGHT)

exit_button = tk.Button(top_frame, text="종료", command=on_exit)
exit_button.pack(side=tk.RIGHT)

middle_frame = tk.Frame(root)
middle_frame.pack(expand=True)

file_listbox = tk.Canvas(middle_frame, width=780, bd=2, relief=tk.SOLID)
file_listbox.pack(side=tk.LEFT, fill=tk.Y, expand=False, padx=10, pady=10)

file_listbox_inner = tk.Frame(file_listbox, padx=5, pady=5, bg=file_listbox.cget("bg"))
file_listbox.create_window((0, 0), window=file_listbox_inner, anchor='nw')

# 기본 구분선 추가
separator = tk.Frame(file_listbox_inner, height=1, bg="gray", width=780)
separator.pack(fill=tk.X, padx=5, pady=2)

scrollbar_listbox = tk.Scrollbar(middle_frame, orient=tk.HORIZONTAL, command=file_listbox.xview)
scrollbar_listbox.pack(side=tk.BOTTOM, fill=tk.X)
scrollbar_listbox.config(width=20)  # 스크롤바 너비 설정
file_listbox.config(xscrollcommand=scrollbar_listbox.set)

open_button = tk.Button(middle_frame, text="추가", command=on_open)
open_button.pack(side=tk.LEFT)

# ...existing code...

root.mainloop()