ryuko-ng/cogs/invites.py

from discord.ext import commands
from discord.ext.commands import Cog
from helpers.checks import check_if_collaborator
import config
import json

class Invites(Cog):
    def __init__(self, bot):
        self.bot = bot

    @commands.command()
    @commands.guild_only()
    @commands.check(check_if_collaborator)
    async def invite(self, ctx):
        welcome_channel = self.bot.get_channel(config.welcome_channel)
        author = ctx.message.author
        reason = f"Created by {str(author)} ({author.id})"
        invite = await welcome_channel.create_invite(max_age = 0,
                max_uses = 1, temporary = True, unique = True, reason = reason)

        with open("data/invites.json", "r") as f:
            invites = json.load(f)

        invites[invite.id] = {
            "uses": 0,
            "url": invite.url,
            "max_uses": 1,
            "code": invite.code
        }

        with open("data/invites.json", "w") as f:
            f.write(json.dumps(invites))

        await ctx.message.add_reaction("🆗")
        try:
            await ctx.author.send(f"Created single-use invite {invite.url}")
        except discord.errors.Forbidden:
            await ctx.send(f"{ctx.author.mention} I could not send you the \
                             invite. Send me a DM so I can reply to you.")


def setup(bot):
    bot.add_cog(Invites(bot))