import discord.ext.commands
from discord.ext import commands
from discord import Interaction
from discord.app_commands import AppCommandError
import logging

logger = logging.getLogger('discord_app')

class ExceptionHandler(commands.Cog):
    def __init__(self, bot: commands.Bot) -> None:
        self.bot = bot

    # @commands.Cog.listener()
    # async def on_command_error(self, ctx: commands.Context, error) -> None:
    #     e_string = f'{error}'
    #     logger.error(e_string)
    #     if 'Command' in e_string and 'not found' in e_string:
    #         pass
    #     else:
    #         await ctx.send(f'Hmm...do you know what this error means:\n\n{error}')

    # attaching the handler when the cog is loaded
    # and storing the old handler
    # this is required for option 1
    def cog_load(self):
        tree = self.bot.tree
        self._old_tree_error = tree.on_error
        tree.on_error = self.on_app_command_error

    # detaching the handler when the cog is unloaded
    # this is optional for option 1
    def cog_unload(self):
        tree = self.bot.tree
        tree.on_error = self._old_tree_error

    # the global error handler for all app commands (slash & ctx menus)
    async def on_app_command_error(
            self,
            interaction: Interaction,
            error: AppCommandError
    ):
        logger.error(f'interaction: {interaction} / error: {error}')
        await interaction.channel.send(f'Hmm...do you know what this error means:\n\n{error}')


async def setup(bot: commands.Bot) -> None:
    await bot.add_cog(ExceptionHandler(bot))