feat(seautils): add [p]rfc command

seautils/info.json

@@ -8,5 +8,6 @@
   "hidden": true,
   "disabled": false,
   "min_bot_version": "3.5.0",
-  "min_python_version": [3, 8, 0]
+  "min_python_version": [3, 8, 0],
+  "requirements": ["beautifulsoup4"]
 }

seautils/seautils.py

@@ -12,7 +12,9 @@ from asyncio.subprocess import Process
 from functools import partial, partialmethod
 from typing import Any
 
+import aiohttp
 import yaml
+from bs4 import BeautifulSoup
 from discord import Color, Embed, app_commands
 from discord.utils import CachedSlotProperty, cached_property
 from redbot.core import commands
@@ -185,3 +187,32 @@ class SeaUtils(commands.Cog):
                         await ctx.send(content= warning + cf.box(text=ns_stdout.decode()))
             except (FileNotFoundError):
                 await ctx.maybe_send_embed(message=cf.error("Neither `dig` nor `nslookup` are installed on the system. Unable to resolve DNS query."))
+
+    async def get_results(self, ctx: commands.Context, soup: BeautifulSoup) -> list:
+        pre_tags = soup.find_all('pre')
+        content = []
+        for pre_tag in pre_tags:
+            if await ctx.embed_requested():
+                embed = Embed(
+                    title="RFC Document",
+                    description=pre_tag.text,
+                    color=await ctx.embed_color()
+                )
+                content.append(embed)
+            else:
+                content.append(pre_tag.text)
+        return content
+
+    @commands.command()
+    async def rfc(self, ctx: commands.Context, number: int) -> None:
+        """Retrieve the text of an RFC document."""
+        url = f"https://www.rfc-editor.org/rfc/rfc{number}.html"
+        async with aiohttp.ClientSession() as session:
+            async with session.get(url=url) as response:
+                if response.status == 200:
+                    html = await response.text()
+                    soup = BeautifulSoup(html, 'html.parser')
+                    content = await self.get_results(ctx, soup)
+                    await SimpleMenu(pages=content, disable_after_timeout=True, timeout=300).start(ctx)
+                else:
+                    await ctx.maybe_send_embed(content=cf.error(f"An error occurred while fetching RFC {number}. Status code: {response.status}."))