"""
Contains the Gwendolyn class, a subclass of the discord command bot.

*Classes*
---------
    Gwendolyn(discord.ext.commands.Bot)
"""
import os  # Used for loading cogs in Gwendolyn.addCogs
import finnhub  # Used to add a finhub client to the bot
import discord  # Used for discord.Intents and discord.Status
import discord_slash  # Used to initialized SlashCommands object
import git  # Used to pull when stopping

from discord.ext import commands  # Used to inherit from commands.bot
from pymongo import MongoClient  # Used for database management
from gwendolyn.funcs import Money, StarWars, Games, Other, LookupFuncs
from gwendolyn.utils import (get_options, get_credentials, log_this,
                             DatabaseFuncs, EventHandler, ErrorHandler,
                             long_strings)


class Gwendolyn(commands.Bot):
    """
    A multifunctional Discord bot.

    *Methods*
    ---------
        log(messages: Union[str, list], channel: str = "",
            level: int = 20)
        stop(ctx: discord_slash.context.SlashContext)
        defer(ctx: discord_slash.context.SlashContext)
    """
    # pylint: disable=too-many-instance-attributes

    def __init__(self):
        """Initialize the bot."""
        intents = discord.Intents.default()
        intents.members = True
        initiation_parameters = {
            "command_prefix": " ",
            "case_insensitive": True,
            "intents": intents,
            "status": discord.Status.dnd
        }
        super().__init__(**initiation_parameters)

        self._add_clients_and_options()
        self._add_util_classes()
        self._add_function_containers()
        self._add_cogs()

    def _add_clients_and_options(self):
        """Add all the client, option and credentials objects."""
        self.long_strings = long_strings()
        self.options = get_options()
        self.credentials = get_credentials()
        finnhub_key = self.credentials["finnhub_key"]
        self.finnhub_client = finnhub.Client(api_key=finnhub_key)
        mongo_user = self.credentials["mongo_db_user"]
        mongo_password = self.credentials["mongo_db_password"]
        mongo_url = f"mongodb+srv://{mongo_user}:{mongo_password}@gwendolyn"
        mongo_url += ".qkwfy.mongodb.net/Gwendolyn?retryWrites=true&w=majority"
        database_clint = MongoClient(mongo_url)

        if self.options["testing"]:
            self.log("Testing mode")
            self.database = database_clint["Gwendolyn-Test"]
        else:
            self.database = database_clint["Gwendolyn"]

    def _add_util_classes(self):
        """Add all the classes used as utility."""
        self.database_funcs = DatabaseFuncs(self)
        self.event_handler = EventHandler(self)
        self.error_handler = ErrorHandler(self)
        slash_parameters = {
            "sync_commands": True,
            "sync_on_cog_reload": True,
            "override_type": True
        }
        self.slash = discord_slash.SlashCommand(self, **slash_parameters)

    def _add_function_containers(self):
        """Add all the function containers used for commands."""
        self.star_wars = StarWars(self)
        self.other = Other(self)
        self.lookup_funcs = LookupFuncs(self)
        self.games = Games(self)
        self.money = Money(self)

    def _add_cogs(self):
        """Load cogs."""
        for filename in os.listdir("./gwendolyn/cogs"):
            if filename.endswith(".py"):
                self.load_extension(f"gwendolyn.cogs.{filename[:-3]}")

    def log(self, messages, channel: str = "", level: int = 20): # pylint:disable=no-self-use
        """Log a message. Described in utils/util_functions.py."""
        log_this(messages, channel, level)

    async def stop(self, ctx: discord_slash.context.SlashContext):
        """
        Stop the bot, and stop running games.

        Only stops the bot if the user in ctx.author is one of the
        admins given in options.txt.

        *parameters*
        ------------
            ctx: discord_slash.context.SlashContext
                The context of the "/stop" slash command.
        """
        if f"#{ctx.author.id}" in self.options["admins"]:
            await ctx.send("Pulling git repo and restarting...")

            await self.change_presence(status=discord.Status.offline)

            self.database_funcs.wipe_games()
            if not self.options["testing"]:
                git_client = git.cmd.Git("")
                git_client.pull()

            self.log("Logging out", level=25)
            await self.close()
        else:
            log_message = f"{ctx.author.display_name} tried to stop me!"
            self.log(log_message, str(ctx.channel_id))
            await ctx.send(f"I don't think I will, {ctx.author.display_name}")

    async def defer(self, ctx: discord_slash.context.SlashContext):
        """Send a "Gwendolyn is thinking" message to the user."""
        try:
            await ctx.defer()
        except discord_slash.error.AlreadyResponded:
            self.log("defer failed")