import subprocess, os
import re # regexp
from enum import Enum

import i3_lemonbar_config as config

kill_on_unfocus = []

# Loggers, initialized in main function
logger = None
health_logger = None

screen_send_cmd = lambda s : None # TODO temporary until move actions to modules
write_queue   = None # TODO Actually, why is this a queue? Just last element is important

class bar_mode(Enum):
    power, normal, control = range(-1,2) # Don't cycle through power

    def cycle(self):
        try:
            return bar_mode(self.value + 1)
        except ValueError:
            return bar_mode(0)

mode = bar_mode.normal

floatterm_args = lambda prog : ['terminator', '-r', 'FLOAT_TERM', '-p'
        , 'dark', '-e', 'echo kill_unfocus $$ > {}; exec {}'.format(
            config.fifo_file_executor, prog)] # TODO URGENT solve without fifo
def date_comm(args):
    subprocess.Popen(['yad', '--no-buttons', '--calendar', '--sticky'
        , '--on-top' , '--class' , '"YADWIN"', '--posx=1650', '--posy=24'
        , '--close-on-unfocus'])

def pavu_comm(args):
    global kill_on_unfocus
    p = subprocess.Popen(['pavucontrol', '--class=FLOAT_PAVU'])
    kill_on_unfocus.append(p.pid)

def htop_comm(args):
    subprocess.Popen(floatterm_args('htop'))

def nmtui_comm(args):
    subprocess.Popen(floatterm_args('nmtui'))
def lang_comm(args):
    subprocess.Popen(['sh', '/home/kuba/.i3/scripts/lang.sh', 'next'])
def dpms_comm(args):
    subprocess.Popen(['sh', '/home/kuba/.i3/scripts/dpmsctl.sh'])
def adj_br(args):
    subprocess.Popen(['/home/kuba/.i3/scripts/adjbr.sh', '-b', config.fifo_file_executor])
def i3msg_comm(args):
    subprocess.Popen(args.split())
def add_tokill(args):
    global kill_on_unfocus
    kill_on_unfocus.append(int(args.split()[1]))
def set_mode(args):
    global mode
    new_mode = args.split()[1]
    if new_mode == "cycle":
        mode = mode.cycle()

    for m in bar_mode:
        if new_mode == m.name:
            mode = m
            break
def bluetooth(args):
    btcargs = args.split()[1:]
    btcargs = [a.replace('pxc550', '00:16:94:22:29:0E') for a in btcargs]
    inp = ' '.join(btcargs)
    screen_send_cmd('bluetoothctl ' + inp)

show_secs = False
def toggle_secs(args):
    global show_secs
    show_secs = not show_secs

# Keymaps
def_keymap = 'pl'
keymaps = {'Firefox': 'se'}
cur_class = ''
def set_lang(args):
    global keymaps
    lang = args.split()[1]
    keymaps[cur_class] = lang

commands_dict = {'toggle_secs': toggle_secs
                ,'date': date_comm
                ,'pavu': pavu_comm
                ,'load': htop_comm
                ,'wlan': nmtui_comm
                ,'dpms': dpms_comm
                ,'i3-msg': i3msg_comm
                ,'switch_lang': lang_comm
                ,'kill_unfocus': add_tokill
                ,'mode': set_mode
                ,'adj_br': adj_br
                ,'setlang': set_lang
                ,'bluetooth': bluetooth
                }

# Helper functions
ansi_escape = re.compile(r'(\x9B|\x1B\[)[0-?]*[ -/]*[@-~]')
def strip_ansi_unicode(s):
    # ANSI escape sequences are for colors in terminal and similar
    strip_ansi = ansi_escape.sub('', s)
    strip_unicode = (strip_ansi.encode('ascii', 'ignore')).decode('utf-8')
    return strip_unicode

def create_new_fifo(fifo_file):
    """
    Create new fifo file, removing old one if it exists
    """
    try:
        os.remove(fifo_file)
        logger.debug('''Removed old fifo file''')
    except OSError:
        logger.debug('''No old fifo file, good''')

    try:
        os.mkfifo(fifo_file)
    except OSError:
        logger.error('''Failed, couldn't create fifo file''')
        os.remove(config.pid_file) # Clean up own PID file
        sys.exit(0)