"""
Functions for controlling the bot's presence.
"""

import random

from nextcord.ext import commands
from nextcord.ext import tasks
import nextcord


class BotPresence(commands.Cog, name="Bot Presence"):
    """Class for bot presence functions."""

    def __init__(self, bot: commands.Bot):
        self.bot = bot

    @commands.Cog.listener()
    async def on_guild_join(self, guild: nextcord.Guild):  # pylint: disable=unused-argument
        """Listener for Guild Join. Updated presence on guild join."""
        await self.change_presence()

    @commands.Cog.listener()
    async def on_ready(self):
        """Starts the loop when bot is ready."""
        await self.bot.wait_until_ready()
        # pylint doesn't recognize that periodic_change_presense is subclassed from tasks.loop.
        self.periodic_change_presence.start()  # pylint: disable=no-member

    @tasks.loop(minutes=2)
    async def periodic_change_presence(self):
        """Loops every 2 minutes and changes presence."""
        await self.change_presence()

    async def change_presence(self):
        """Randomly chooses a presence and updates bot's presence."""
        statuses = [
            "Now with slash commands!",
            "Vuln Pls.",
            "All your base are belong to us.",
            "Double plus good.",
            "That's a lot of damage!",
        ]

        status = random.choice(statuses)

        status += f" | {len(self.bot.guilds)} servers"

        await self.bot.change_presence(activity=nextcord.Game(status))


# This function will be called when this extension is loaded.
# It is necessary to add these functions to the bot.
def setup(bot: commands.Bot):
    """Adds function to bot"""
    bot.add_cog(BotPresence(bot))