[PressF] to pay respects

pressf/__init__.py

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+from .pressf import PressF
+
+def setup(bot):
+    bot.add_cog(PressF(bot))

pressf/info.json

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+{
+	"author": [
+		"aikaterna"
+	],
+	"description": "Pay respects to a thing or user by pressing f.",
+    "install_msg": "Thanks for installing, have fun.",
+	"short": "Press f to pay respects.",
+	"tags": [
+		"pressf",
+		"respects",
+	],
+	"type": "COG"
+}

pressf/pressf.py

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+import asyncio
+import discord
+from redbot.core import commands
+
+
+class PressF(commands.Cog):
+    """Pay some respects."""
+
+    def __init__(self, bot):
+        self.bot = bot
+        self.channels = {}
+
+    @commands.command()
+    @commands.bot_has_permissions(add_reactions=True)
+    async def pressf(self, ctx, *, user: discord.User = None):
+        """Pay respects by pressing F"""
+        if str(ctx.channel.id) in self.channels:
+            return await ctx.send(
+                "Oops! I'm still paying respects in this channel, you'll have to wait until I'm done."
+            )
+
+        if user:
+            answer = user.display_name
+        else:
+            await ctx.send("What do you want to pay respects to?")
+
+            def check(m):
+                return m.author == ctx.author
+
+            try:
+                pressf = await ctx.bot.wait_for("message", timeout=120.0, check=check)
+            except asyncio.TimeoutError:
+                return await ctx.send("You took too long to reply.")
+
+            answer = pressf.content
+
+        message = await ctx.send(
+            f"Everyone, let's pay respects to **{answer}**! Press the f reaction on the this message to pay respects."
+        )
+        await message.add_reaction("\U0001f1eb")
+        self.channels[str(ctx.channel.id)] = []
+        await asyncio.sleep(120)
+        await message.delete()
+        amount = len(self.channels[str(ctx.channel.id)])
+        word = "person has" if amount == 1 else "people have"
+        await ctx.channel.send(f"**{amount}** {word} paid respects to **{answer}**.")
+        del self.channels[str(ctx.channel.id)]
+
+    @commands.Cog.listener()
+    async def on_reaction_add(self, reaction, user):
+        if str(reaction.message.channel.id) not in self.channels:
+            return
+        if user.id == self.bot.user.id:
+            return
+        if str(user.id) not in self.channels[str(reaction.message.channel.id)]:
+            if str(reaction.emoji) == "\U0001f1eb":
+                await reaction.message.channel.send(f"**{user.display_name}** has paid respects.")
+                self.channels[str(reaction.message.channel.id)].append(user.id)