import sys
import tkinter as tk
from tkinter import filedialog
from tkinter import messagebox
import re


def clean_svg_file(content):
    replacement = content
    for nsName in tags:
        print(nsName)
        reg_xmlns = 'xmlns:' + nsName + '=".*?"\\s*'
        reg_tag = '<' + nsName + ':([^>]|[\\s])*?((\\/>)|(>[\\s\\S]*?<\\/' + nsName + ':.*?>))\\s*'
        reg_attr = nsName + ':.*?=".*?"\\s*'
        replacement = re.sub(reg_xmlns, '', replacement)
        replacement = re.sub(reg_tag, '', replacement)
        replacement = re.sub(reg_attr, '', replacement)

    return replacement


def file_save(text):
    f = filedialog.asksaveasfile(mode='w', defaultextension=".svg")
    if f is None:  # asksaveasfile return `None` if dialog closed with "cancel".
        return

    f.write(text)
    f.close()
    messagebox.showinfo("Information", "File has been cleaned.")


def file_open():
    file_path = filedialog.askopenfilename(defaultextension=".svg")
    with open(file_path) as f:
        read_data = f.read()
        f.close()
        return read_data


try:
    root = tk.Tk()
    root.withdraw()
    tags = ['inkscape', 'sodipodi', 'rdf', 'cc', 'dc', 'metadata']

    file_data = file_open()

    question = messagebox.askokcancel("Clean file", "Do you want to clean the file from "
                                                    "'inkscape', 'sodipodi', 'rdf', 'cc', 'dc', 'metadata")

    if question:
        cleaned = clean_svg_file(file_data)
        file_save(cleaned)



    sys.exit(0)
except:
    print(sys.exc_info()[0])
    messagebox.showerror("Error", "Could not clean file\n" + str(sys.exc_info()[0]))
    raise
    sys.exit(1)