import PySimpleGUI as sg
import base64
import pyperclip

"""
    Make base64 image from a file
    This is usually done in order to create a Base64 image for use as an Ucon or a Button image
    To use, either copy and paste the full path to the file or use the browse button to locate the file.
    Once chosen, the conversion will happen automatically with the result placed on the clipboard.
    When complete, a popup window is shown that automatically closes after 1 second so you aren't bothered with having to close it

    NOTE - if you're replacing your ICO file for your window with a base64 image, you will first need to convert your icon from
    an ICO file into a PNG file.  Encode the PNG file and then you'll be able to pass that value in your call to Window:

    window = sg.Window('Window Title', layout, icon=icon)

    Where icon is a variable you created using the contents of the clipboard folowing running this program.

    Input: a single image file
    Output: clipboard will contain the Base64 Byte String of the source image
"""


def convert_file_to_base64(filename):
    try:
        contents = open(filename, 'rb').read()
        encoded = base64.b64encode(contents)
        pyperclip.copy(str(encoded))
        sg.popup('Copied to your clipboard!', auto_close=True, auto_close_duration=1)
    except Exception as error:
        sg.popup_error('Cancelled - An error occurred', error)


if __name__ == '__main__':
    filename = sg.popup_get_file('Source Image will be encoded and results placed on clipboard', title='Base64 Encoder')

    if filename:
        convert_file_to_base64(filename)
    else:
        sg.popup_cancel('Cancelled - No valid file entered')