""" Libraries for python modules. """

from discord.ext.commands import Context
from emoji import get_emoji_regexp
from random import choice
from json import load as load_json
from re import sub, IGNORECASE
from asyncio import create_subprocess_shell
from asyncio.subprocess import PIPE
from pagermaid import module_dir


class ProcessMessage:
    def __init__(self, parameters, text, arguments):
        self.parameters = parameters
        self.text = text
        self.arguments = arguments


# def lang(text: str) -> str:
#    """ i18n """
#    result = lang_dict.get(text, text)
#    return result


async def execute(command, pass_error=True):
    """ Executes command and returns output, with the option of enabling stderr. """
    executor = await create_subprocess_shell(
        command,
        stdout=PIPE,
        stderr=PIPE
    )

    try:
        stdout, stderr = await executor.communicate()
    except:
        return 'error'
    if pass_error:
        result = str(stdout.decode().strip()) \
                 + str(stderr.decode().strip())
    else:
        result = str(stdout.decode().strip())
    return result


def owoify(text):
    """ Converts your text to OwO """
    smileys = [';;w;;', '^w^', '>w<', 'UwU', '(・`ω´・)', '(´・ω・`)']
    with open(f"{module_dir}/assets/replacements.json") as fp:
        replacements = load_json(fp)
    for expression in replacements:
        replacement = replacements[expression]
        text = sub(expression, replacement, text, flags=IGNORECASE)
    words = text.split()
    first_letter = words[0][0]
    letter_stutter = f"{first_letter}-{first_letter.lower()}-{first_letter.lower()}"
    if len(words[0]) > 1:
        words[0] = letter_stutter + words[0][1:]
    else:
        words[0] = letter_stutter
    text = " ".join(words)
    text = text.replace('L', 'W').replace('l', 'w')
    text = text.replace('R', 'W').replace('r', 'w')
    text = '! {}'.format(choice(smileys)).join(text.rsplit('!', 1))
    text = '? OwO'.join(text.rsplit('?', 1))
    text = '. {}'.format(choice(smileys)).join(text.rsplit('.', 1))
    text = f"{text} desu"
    for v in ['a', 'o', 'u', 'A', 'O', 'U']:
        if 'n{}'.format(v) in text:
            text = text.replace('n{}'.format(v), 'ny{}'.format(v))
        if 'N{}'.format(v) in text:
            text = text.replace('N{}'.format(v), 'N{}{}'.format('Y' if v.isupper() else 'y', v))
    return text


def clear_emojis(target):
    """ Removes all Emojis from provided string """
    return get_emoji_regexp().sub(u'', target)


def process_command(context: Context):
    text = context.message.content
    text_list = text.strip().split(' ')[1:]
    arguments = ' '.join(text_list)
    return ProcessMessage(text_list, text, arguments)