from ctypes import alignment
from tkinter import *
from tkinter import ttk, filedialog, messagebox
import configparser
import db
from PIL import ImageTk, Image

root = None
database = None
config = None
listbox = None
image_label = None
desc_label = None
img = None
fViewHelp = False


def load_config():
    global config
    config = configparser.ConfigParser()
    config.read('cfg.ini')


def load_database():
    global database, config
    database = db.DB(config['DEFAULT']['db_path'])


def help_menu():
    global root
    newWindow = Toplevel(root)
    newWindow.title("New Window")
    newWindow.geometry("200x200")
    Label(newWindow,
          text="This is a new window").pack()


def fond_menu():
    global root
    newWindow = Toplevel(root)
    newWindow.title("New Window")
    newWindow.geometry("200x200")
    Label(newWindow,
          text="This is a new window").pack()


def close_prog(event=None):
    global database
    database.close()
    exit()


def key_pressed(event):
    print(event.keysym)
    if event.keysym == 'F1':
        open_help_window()
    if event.keysym == 'F2':
        add_record_window()
    if event.keysym == 'F3':
        confirm_delete()
    if event.keysym == 'F4':
        update_record_window()


def selected(event):
    global listbox, image_label, desc_label, img
    selected_indices = listbox.curselection()
    selected = ''.join([listbox.get(i) for i in selected_indices])
    record = database.get_record_by_name(selected)
    img = ImageTk.PhotoImage(Image.open(record.img_path))
    image_label.config(image=img)
    desc_label.insert(1.0, record.description)


def add_record_window(event=""):
    global database, listbox

    def browse_image():
        filename = filedialog.askopenfilename(parent=add_window)
        image_path_entry.delete(0, "end")
        image_path_entry.insert(0, filename)

    def add_button():
        database.add_record(name=name_entry.get(), description=description_entry.get(
            1.0, "end-1c"), img_path=image_path_entry.get())
        load_listbox()
        add_window.destroy()

    # Создание окна
    add_window = Toplevel()
    add_window.title("Добавить запись")

    # Создание и размещение виджетов
    name_label = Label(add_window, text="Имя:")
    name_label.grid(row=0, column=0)
    name_entry = Entry(add_window, width=50)
    name_entry.grid(row=0, column=1)

    description_label = Label(add_window, text="Описание:")
    description_label.grid(row=1, column=0)
    description_entry = Text(add_window, width=50, height=10)
    description_entry.grid(row=1, column=1)

    image_path_label = Label(add_window, text="Путь до изображения:")
    image_path_label.grid(row=2, column=0)
    image_path_entry = Entry(add_window, width=50)
    image_path_entry.grid(row=2, column=1)
    browse_button = Button(add_window, text="Обзор", command=browse_image)
    browse_button.grid(row=2, column=2)

    update_button = Button(add_window, text="Добавить", command=add_button)
    update_button.grid(row=3, column=0, columnspan=2)

    add_window.mainloop()


def update_record_window(event=""):
    global database, listbox

    def browse_image():
        filename = filedialog.askopenfilename(parent=update_window)
        image_path_entry.delete(0, "end")
        image_path_entry.insert(0, filename)

    def edit_button():
        database.edit_record(selected, name=name_entry.get(), description=description_entry.get(
            1.0, "end-1c"), img_path=image_path_entry.get())
        load_listbox()
        update_window.destroy()

    selected_indices = listbox.curselection()
    selected = ''.join([listbox.get(i) for i in selected_indices])
    record = database.get_record_by_name(selected)

    if record == None:
        return

    # Создание окна
    update_window = Toplevel()
    update_window.title("Изменить запись")
    update_window.lift()

    # Создание и размещение виджетов
    name_label = Label(update_window, text="Имя:")
    name_label.grid(row=0, column=0)
    name_entry = Entry(update_window, width=50)
    name_entry.insert(0, record.name)
    name_entry.grid(row=0, column=1)

    description_label = Label(update_window, text="Описание:")
    description_label.grid(row=1, column=0)
    description_entry = Text(update_window, width=50, height=10)
    description_entry.insert("1.0", record.description)
    description_entry.grid(row=1, column=1)

    image_path_label = Label(update_window, text="Путь до изображения:")
    image_path_label.grid(row=2, column=0)
    image_path_entry = Entry(update_window, width=50)
    image_path_entry.insert(0, record.img_path)
    image_path_entry.grid(row=2, column=1)
    browse_button = Button(update_window, text="Обзор", command=browse_image)
    browse_button.grid(row=2, column=2)

    update_button = Button(update_window, text="Изменить", command=edit_button)
    update_button.grid(row=3, column=0, columnspan=2)

    update_window.mainloop()


def load_listbox():
    global listbox, database
    listbox.delete(0, "end")
    for i, record in enumerate(database.load_records(), 0):
        listbox.insert(i, record.name)


def open_help_window():
    global fViewHelp
    print(fViewHelp)

    def close_help():
        global fViewHelp
        fViewHelp = False
        top.destroy()
    if not fViewHelp:
        top = Toplevel()
        top.title("Справка")
        top.geometry("400x200")
        top.maxsize(400, 200)
        top.minsize(400, 200)
        top.focus_set()
        top.protocol("WM_DELETE_WINDOW", close_help)
        label = Label(top, text="База данных 'Известные моря России'\nПозволяет добавлять / изменять / удалять \n информацию.\nКлавиши программы:\nF1-вызов справки о программе,\nF2-добавить в базу данных,\nF3-удалить из базы данных,\nF4-изменить запись в базе данных,\nF10-меню программы", justify='left', anchor='w')
        label.place(x=0, y=0, relwidth=0.95)
        close_button = Button(top, text="Закрыть", command=close_help)
        close_button.place(x=300, y=150)
        fViewHelp = True


def open_about_window():
    aboutwindow = Toplevel()
    aboutwindow.title("О программе")
    aboutwindow.geometry("300x100")
    aboutwindow.maxsize(300, 100)
    aboutwindow.minsize(300, 100)
    aboutwindow.grab_set()

    label = Label(aboutwindow, text="База данных 'Известные моря России'\n(c) Romanko M.I., Russia, 2023",
                  anchor=CENTER, justify='center')
    label.place(relx=0.5, rely=0.5, anchor='center')


def confirm_delete():
    global database, listbox
    selected_indices = listbox.curselection()
    selected = ''.join([listbox.get(i) for i in selected_indices])
    result = messagebox.askquestion(
        "Подтверждение", "Вы уверены, что хотите удалить запись?")
    if result == 'yes':
        database.delete_record(selected)
        messagebox.showinfo("Успех", "Запись успешно удалена")
        load_listbox()
    else:
        messagebox.showinfo("Отмена", "Удаление отменено")


def main():
    global root, listbox, database, image_label, desc_label

    load_config()
    load_database()

    root = Tk()
    root.title("amDB")
    root.geometry('700x500+50+50')
    root.minsize(700, 500)
    root.maxsize(700, 500)
    root.bind('<KeyPress-F1>', key_pressed)
    root.bind('<KeyPress-F2>', key_pressed)
    root.bind('<KeyPress-F3>', key_pressed)
    root.bind('<KeyPress-F4>', key_pressed)
    root.bind('<KeyPress-F10>', key_pressed)
    root.bind('<Control-x>', close_prog)

    main_menu = Menu()

    fond_menu = Menu(tearoff=0)
    fond_menu.add_command(label="Найти...")
    fond_menu.add_separator()
    fond_menu.add_command(label="Добавить    F2", command=add_record_window)
    fond_menu.add_command(label="Удалить       F3", command=confirm_delete)
    fond_menu.add_command(label="Изменить   F4", command=update_record_window)
    fond_menu.add_separator()
    fond_menu.add_command(label="Выход           Ctrl+X", command=close_prog)

    help_menu = Menu(tearoff=0)
    help_menu.add_command(label="Содержание", command=open_help_window)
    help_menu.add_separator()
    help_menu.add_command(label="О программе", command=open_about_window)

    main_menu.add_cascade(label="Фонд", menu=fond_menu)
    main_menu.add_cascade(label="Справка", menu=help_menu)

    label_bottom = Label(root, text="F1-справка F2-добавить F3-удалить F4-изменить F10-меню",
                         bd=1, relief=SUNKEN, anchor=W, height=1)
    label_bottom.place(relx=0.0, rely=0.95, relwidth=1)

    listbox = Listbox(root, justify="left", width=30)
    listbox.bind("<<ListboxSelect>>", selected)
    listbox.place(x=0, y=0, relheight=0.95)

    load_listbox()

    image_frame = ttk.Frame(root)
    image_label = Label(image_frame)
    image_label.place(relx=0.0, rely=0.0, relheight=1.0, relwidth=1.0)
    image_frame.place(x=200, rely=0.0, relheight=0.95, width=300)

    desc_frame = ttk.Frame(root)
    desc_label = Text(desc_frame, wrap="word")
    desc_label.place(relx=0.0, rely=0.0, relheight=1.0, relwidth=1.0)
    desc_frame.place(x=500, rely=0.0, relwidth=0.3, relheight=0.95)
    root.config(menu=main_menu)

    root.mainloop()


if __name__ == "__main__":
    main()