import tkinter as  tk
import tkinter.simpledialog
import tkinter.filedialog
import tkinter.messagebox
from PIL import Image, ImageTk

def open_file():
    filetypes = [('All Image Formats', '.jpeg .jpg .png .tiff .bmp .gif'), ('All Files', '.*')]
    filename = tkinter.filedialog.askopenfilename(title='Select Image', filetypes=filetypes)
    if not filename:
        return
    print(filename)


def save_file():
    filename = tkinter.filedialog.asksaveasfilename()
    if not filename:
        return
    print(filename)

def share():
    def share_email():
        nonlocal popup
        popup.withdraw()
        email = tkinter.simpledialog.askstring('Wanna share by email?', 'Enter correct target email')
        print(email)
        popup.deiconify()
        popup.attributes('-topmost', True)#1

    def share_vk():
        pass

    def share_fb():
        pass

    popup = tk.Toplevel(root)
    popup.title('Wanna share?')

    popup.geometry(f'+{root.winfo_x() + root.winfo_width() // 4}+{root.winfo_y() + root.winfo_height() // 2}')#2
    tk.Button(popup, text='VK', width=20, command=share_vk).pack(side=tk.LEFT, padx=15, pady=10)
    tk.Button(popup, text='FB', width=20, command=share_fb).pack(side=tk.LEFT, padx=15, pady=10)
    tk.Button(popup, text='EMAIL', width=20, command=share_email).pack(side=tk.LEFT, padx=15, pady=10)
    popup.focus_set()

#3
def undo(event=None):
    global current_state
    if current_state-1 < 0:
        tk.messagebox.showerror(title='Error!', message='Not less than 0')
        return
    current_state -= 1
    print(STATES, current_state,sep='\n', end='\n\n')

#3
def redo(event=None):
    global current_state
    if current_state+1 > 5:
        tk.messagebox.showerror(title='Error!', message='Not more than 5')
        return
    current_state += 1
    print(STATES, current_state,sep='\n', end='\n\n')


def reset():
    global current_state, STATES
    confirmed = tkinter.messagebox.askyesno('Confirm', 'All changes will be lost. Are you sure?')
    print(confirmed)
    if confirmed:
        current_state = 0
        STATES = STATES[:1]
    print(STATES, current_state,sep='\n', end='\n\n')


def filter_1():
    global current_state
    STATES.insert(current_state+1, 'filter1')
    current_state += 1


def filter_2():
    global current_state
    STATES.insert(current_state+1, 'filter2')
    current_state += 1


def filter_3():
    global current_state
    STATES.insert(current_state+1, 'filter3')
    current_state += 1


def filter_4():
    global current_state
    STATES.insert(current_state+1, 'filter4')
    current_state += 1


def filter_5():
    global current_state
    STATES.insert(current_state+1, 'filter5')
    current_state += 1



STATES = ['Initial']
current_state = 0

root = tk.Tk()


root.title('TkFilters')
root.configure(bg='white')


button_style = {'fg': 'white', 'bg': 'black', 'font': ('Helvetica', 18)}
grid_style = {'padx': 5, 'pady': 5, 'sticky': 'nwes'}


open_button = tk.Button(root, **button_style, text='Open', command=open_file)
save_button = tk.Button(root, text='Save As', command=save_file,  **button_style)
share_button = tk.Button(root, text='Share', command=share,  **button_style)

open_button.grid(column=1, row=0, **grid_style)
save_button.grid(column=2, row=0, **grid_style)
share_button.grid(column=3, row=0, **grid_style)


undo_button = tk.Button(root, text='Undo', command=undo, **button_style)
redo_button = tk.Button(root, text='Redo', command=redo, **button_style)
reset_button = tk.Button(root, text='Reset', command=reset, **button_style)

undo_button.grid(column=1, row=6, **grid_style)
redo_button.grid(column=2, row=6, **grid_style)
reset_button.grid(column=3, row=6, **grid_style)


filter1_button = tk.Button(root, text='Filter1', command=filter_1, **button_style)
filter2_button = tk.Button(root, text='Filter2', command=filter_2, **button_style)
filter3_button = tk.Button(root, text='Filter3', command=filter_3, **button_style)
filter4_button = tk.Button(root, text='Filter4', command=filter_4, **button_style)
filter5_button = tk.Button(root, text='Filter5', command=filter_5, **button_style)

filter1_button.grid(column=0, row=1, **grid_style)
filter2_button.grid(column=0, row=2, **grid_style)
filter3_button.grid(column=0, row=3, **grid_style)
filter4_button.grid(column=0, row=4, **grid_style)
filter5_button.grid(column=0, row=5, **grid_style)


image_label = tk.Label(root)
image_label.grid(row=1, column=1, rowspan=5, columnspan=3, sticky='nwes')
#4
image_src = Image.open(r'1.jpg')#Картинка должна находиться в одной папке с кодом
image_tk = ImageTk.PhotoImage(image_src)

image_label.configure(image=image_tk)


root.bind('<Control-z>', undo)
root.bind('<Control-y>', redo)
root.mainloop()