ryuko-ng/cogs/remind.py

import discord
import asyncio
import time
from datetime import datetime
from discord.ext import commands
from discord.ext.commands import Cog
from helpers.robocronp import add_job, get_crontab


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

    @commands.cooldown(1, 60, type=commands.BucketType.user)
    @commands.command()
    async def remindlist(self, ctx):
        """Lists your reminders."""
        ctab = get_crontab()
        uid = str(ctx.author.id)
        embed = discord.Embed(title=f"Active robocronp jobs")
        for jobtimestamp in ctab["remind"]:
            if uid not in ctab["remind"][jobtimestamp]:
                continue
            job_details = ctab["remind"][jobtimestamp][uid]
            expiry_timestr = datetime.utcfromtimestamp(int(jobtimestamp))\
                .strftime('%Y-%m-%d %H:%M:%S (UTC)')
            embed.add_field(name=f"Reminder for {expiry_timestr}",
                            value=f"Added on: {job_details['added']}, "
                            f"Text: {job_details['text']}",
                            inline=False)
        await ctx.send(embed=embed)

    @commands.cooldown(1, 60, type=commands.BucketType.user)
    @commands.command(aliases=["remindme"])
    async def remind(self, ctx, when: str, *, text: str = "something"):
        """Reminds you about something."""
        if ctx.guild:
            await ctx.message.delete()
        current_timestamp = time.time()
        expiry_timestamp = self.bot.parse_time(when)

        if current_timestamp + 5 > expiry_timestamp:
            msg = await ctx.send(f"{ctx.author.mention}: Minimum "
                                 "remind interval is 5 seconds.")
            await asyncio.sleep(5)
            await msg.delete()
            return

        expiry_datetime = datetime.utcfromtimestamp(expiry_timestamp)
        duration_text = self.bot.get_relative_timestamp(time_to=expiry_datetime,
                                                        include_to=True,
                                                        humanized=True)

        safe_text = await commands.clean_content().convert(ctx, str(text))
        added_on = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S (UTC)")

        add_job("remind",
                ctx.author.id,
                {"text": safe_text, "added": added_on},
                expiry_timestamp)

        msg = await ctx.send(f"{ctx.author.mention}: I'll remind you in "
                             f"DMs about `{safe_text}` in {duration_text}.")
        await asyncio.sleep(5)
        await msg.delete()


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