import asyncio
import logging

from discord import Game
from discord.ext import commands
from discord.utils import oauth_url
import logging.handlers as handlers
from sys import stdout
from os import path

from GeoffreyApp.api.discord_bot.BotErrors import *
from GeoffreyApp.api.commands import *
from django.conf import settings

logger = logging.getLogger(__name__)

description = '''
Geoffrey (pronounced JOFF-ree) started his life as an inside joke none of you will understand.
At some point, she was to become an airhorn discord_bot. Now, they know where your stuff is.

Please respect Geoffrey, the discord_bot is very sensitive.

All commands must be prefaced with '?'

If have a suggestion or if something is borked, you can PM my ding dong of a creator BirbHD.

*You must use ?register before adding things to Geoffrey*

For a better a explanation on how this discord_bot works go the following link:
https://github.com/joeyahines/Geoffrey/blob/master/README.md

'''

bad_error_message = 'OOPSIE WOOPSIE!! Uwu We made a fucky wucky!! A wittle fucko boingo! The admins at our ' \
                    'headquarters are working VEWY HAWD to fix this! (Error in command {})'

extensions = []
'''
extensions = ['GeoffreyApp.cogs.Add_Commands',
              'GeoffreyApp.cogs.Delete_Commands',
              'GeoffreyApp.cogs.Edit_Commands',
              'GeoffreyApp.cogs.Search_Commands',
              'GeoffreyApp.cogs.Admin_Commands']
'''


class GeoffreyBot(commands.Bot):
    def __init__(self):
        super().__init__(command_prefix=getattr(settings, 'BOT_PREFIX', '?'), description=description, pm_help=True, case_insensitive=True)
        self.error_users = getattr(settings, 'ERROR_USERS', [])
        self.admin_users = getattr(settings, 'MOD_RANK', [])
        self.special_users = getattr(settings, 'SPECIAL_USERS', [])
        self.default_status = getattr(settings, 'DEFAULT_STATUS', 'sed')

        for extension in extensions:
            try:
                self.load_extension(extension)
            except Exception as e:
                logger.info('Failed to load extension {}'.format(extension))
                raise e

    async def on_ready(self):
        logger.info("%s Online, ID: %s", self.user.name, self.user.id)
        info = await self.application_info()
        url = oauth_url(info.id)
        logger.info("Bot url: %s", url)
        await self.change_presence(activity=Game(self.default_status))

    async def on_command(self, ctx):
        if ctx.invoked_subcommand is None:
            subcommand = ""
        else:
            subcommand = ":" + ctx.invoked_subcommand.__str__()

        logger.info("User %s, used command %s%s with context: %s", ctx.message.author, ctx.command.name, subcommand,
                    ctx.args)

        if ctx.invoked_with.lower() == 'help' and ctx.message.guild is not None:
            await ctx.send("{}, I sent you some help in the DMs.".format(ctx.message.author.mention))

    async def on_command_error(self, ctx, error):
        error_str = ''
        if hasattr(ctx, 'cog'):
            if "Admin_Commands" in ctx.cog.__str__():
                return
        if hasattr(error, 'original'):
            if isinstance(error.original, NoPermissionError):
                error_str = 'You don\'t have permission for that cool command.'
            elif isinstance(error.original, UsernameLookupFailed):
                error_str = 'Your user name was not found, either Mojang is having a fucky wucky ' \
                            'or your nickname is not set correctly. *stares at the Mods*'
            elif isinstance(error.original, PlayerNotFound):
                error_str = 'Make sure to use ?register first you ding dong.'
            elif isinstance(error.original, EntryNameNotUniqueError):
                error_str = 'An entry in the database already has that name you ding dong.'
            elif isinstance(error.original, DatabaseValueError):
                error_str = 'Use a shorter name or a smaller value, dong ding.'
            elif isinstance(error.original, NotOnServerError):
                error_str = 'Command needs to be run on 24CC. Run this command there whoever you are.'.format()
            elif isinstance(error.original, EmptryString):
                error_str = 'Do not not pass empty string to Geoffrey. Ding dong.'
        elif isinstance(error, commands.CommandOnCooldown):
            return
        elif isinstance(error, commands.UserInputError):
            error_str = 'Invalid syntax for **{}** you ding dong:' \
                .format(ctx.invoked_with, ctx.invoked_with)

            pages = await self.formatter.format_help_for(ctx, ctx.command)
            for page in pages:
                error_str = error_str + '\n' + page
        elif isinstance(error, commands.CommandNotFound):
            return

        if error_str is '':
            await self.send_error_message(
                'Geoffrey encountered unhandled exception: {} Command: **{}** Context: {}'.format(error,
                                                                                                  ctx.command.name,
                                                                                                  ctx.args))
            error_str = bad_error_message.format(ctx.invoked_with)

        logger.error("Geoffrey encountered exception: %s", error)

        await ctx.message.channel.send('{} **Error Running Command:** {}'.format(
            ctx.message.author.mention, error_str))

    async def send_error_message(self, msg):
        for user_id in self.error_users:
            user = await self.get_user_info(user_id)
            await user.send(msg)


def setup_logging():
    discord_logger = logging.getLogger('discord')
    discord_logger.setLevel(logging.INFO)
    bot_info_logger = logging.getLogger('GeoffreyApp.api.discord_bot.discord_bot')
    bot_info_logger.setLevel(logging.INFO)
    console = logging.StreamHandler(stdout)
    console.setFormatter(logging.Formatter('%(asctime)s:%(levelname)s:%(name)s: %(message)s'))

    bot_info_logger.addHandler(console)


def start_bot():
    asyncio.set_event_loop(asyncio.new_event_loop())
    bot = None
    try:
        bot = GeoffreyBot()

        @bot.command(pass_context=True)
        async def test(ctx):
            """
            Checks if the discord_bot is alive.
            """
            await ctx.send('I\'m here you ding dong')

        setup_logging()

        bot.run(getattr(settings, 'DISCORD_TOKEN'))

    except KeyboardInterrupt:
        logger.info("Bot received keyboard interrupt")
    except Exception as e:
        print(e)
        logger.info('Bot encountered the following unhandled exception %s', e)
    finally:
        if bot is not None:
            bot.loop.stop()
        logger.info("Bot shutting down...")