#!/usr/bin/env python

## Copyright (C) 2020-2023 Aditya Shakya <adi1090x@gmail.com>

# ac-kb: a script to read openbox's rc.xml and write out the keybinds
# Copyright (C) 2010 wlourf
# Copyright (C) 2015 damo <damo@bunsenlabs.org>

import sys
import os
import datetime
import argparse

try:
    from lxml import etree
except ImportError:
    import xml.etree.ElementTree as etree

# path and name of the rc.xml and saved keybinds files
rc_fpath = os.environ["HOME"] + "/.config/openbox/rc.xml"
kb_fpath = os.environ["HOME"] + "/.config/openbox/kbinds.txt"
arrShortcut = []
gui = False

def cmdargs():
    """get command arguments"""
    if  len(sys.argv) > 1:
        if sys.argv[1] == "--gui":
            gui = True
            return gui
        else:
            msg = "\n\n\tUSAGE: to display keybinds in a text window use 'al-kb --gui'\n\n"
            msg += "\tRunning the script without args will send output to the terminal\n\n"
            print(msg)
            sys.exit()

def keyboard():
    """read keyboard shorcuts"""
    # Parse xml
    strRoot = "{http://openbox.org/3.4/rc}"
    tree = etree.parse(rc_fpath)
    root = tree.getroot()

    for k in root.findall(strRoot+"keyboard/" + strRoot + "keybind"):
        key = k.get("key")
        action_element = k.find(strRoot+"action")
        strTxt = ""
        strType = "o "        # flag for pipemenu: Openbox window command
        if action_element != None:
            arrShortcut.append((key, "", ""))
            if action_element.get("name") == "Execute":
                name_element = action_element.find(strRoot + "name")
                command_element = action_element.find(strRoot + "command")
                exec_element = action_element.find(strRoot + "execute")
                strType = "x "  # flag for pipemenu: Run command

                if name_element != None:
                    strTxt = name_element.text
                elif command_element != None:
                    strTxt = command_element.text
                elif exec_element != None:
                    strTxt = exec_element.text
            elif action_element.get("name") == "ShowMenu":
                menu_element = action_element.find(strRoot + "menu")
                if menu_element != None:
                    strTxt = menu_element.text
            else:
                action_name = action_element.get("name")
                if action_name != None:
                    strTxt = action_name
            arrShortcut[len(arrShortcut) - 1] = (strType, key, strTxt)

def output_keybinds(arrShortcut, gui):
    """loop through array, and format output then write to file"""
    for i in range(0, len(arrShortcut)):
        exe = str(arrShortcut[i][0])
        keybinding = str(arrShortcut[i][1])
        execute = str(arrShortcut[i][2])
        if gui:     #format output for text window
            if len(execute) > 80:
                execute = execute[:70] + "....."
            if len(keybinding) > 15:
                line = "{:2}".format(i) + "\t" + "{:<16}".format(keybinding) + "\t" + execute
            elif len(keybinding) >= 10:
                line = "{:2}".format(i) + "\t" + "{:<15}".format(keybinding) + "\t\t\t" + execute
            elif len(keybinding) >= 8:
                line = "{:2}".format(i) + "\t" + "{:<14}".format(keybinding) + "\t\t\t\t" + execute
            else:
                line = "{:2}".format(i) + "\t" + "{:<14}".format(keybinding) + "\t\t\t\t" + execute
        else:   #format text for pipemenu
            line = exe + "{:<16}".format(keybinding) + "\t" + execute
            print(line)
        write_file(line)

def check_rcfile(fpath, mode):
    """Check if rc.xml exists, and is accessible"""
    try:
        f = open(fpath, mode)
    except IOError as e:
        return False
    return True

def write_file(line):
    """Text file to store keybinds"""
    f = open(kb_fpath, 'a')
    f.write(line + "\n")
    f.close()

def check_txtfile(kb_fpath):
    """Create Text file to store keybinds"""
    try:
        f = open(kb_fpath, 'w')
    except IOError as e:
        return False
    return True

if __name__ == "__main__":

    ap = argparse.ArgumentParser(description = "Display keybinds")
    ap.add_argument("-g", "--gui", help = "display keybinds in a text window", action = "store_true")
    opts = ap.parse_args(sys.argv[1:])
    gui = opts.gui
    check_txtfile(kb_fpath)
    if gui:      # output formatted keybinds text in text window
        write_file(str(datetime.date.today()) + "\trc.xml KEYBINDS")
        write_file("-------------------------------\n")

    if check_rcfile(rc_fpath, "r"):
        keyboard()
        output_keybinds(arrShortcut, gui)
    else:
        MSG = "\nCan't open rc.xml for parsing\n\
        Check the filepath given: " + rc_fpath + "\n"
        print(MSG)
        sys.exit(1)

    if gui:     # output formatted keybinds text in text window
        DLG = "yad --button=Exit:1 --text-info --title='Openbox Keybinds' "
        DLG += "--filename=$HOME/.config/openbox/kbinds.txt "
        DLG += "--width=750 --height=600 "
        os.system(DLG)