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import random
import re
import typing as t
from urllib.parse import quote_plus
from discord import Embed
from discord.ext import commands
from discord.ext.commands import BucketType, Context
from bot import constants
from bot.bot import Bot
from bot.constants import Categories, Channels, Colours, ERROR_REPLIES
from bot.utils.decorators import whitelist_override
ERROR_MESSAGE = f"""
Unknown cheat sheet. Please try to reformulate your query.
**Examples**:
```md
{constants.Client.prefix}cht read json
{constants.Client.prefix}cht hello world
{constants.Client.prefix}cht lambda
```
If the problem persists send a message in <#{Channels.dev_contrib}>
"""
URL = "https://cheat.sh/python/{search}"
ESCAPE_TT = str.maketrans({"`": "\\`"})
ANSI_RE = re.compile(r"\x1b\[.*?m")
# We need to pass headers as curl otherwise it would default to aiohttp which would return raw html.
HEADERS = {"User-Agent": "curl/7.68.0"}
class CheatSheet(commands.Cog):
"""Commands that sends a result of a cht.sh search in code blocks."""
def __init__(self, bot: Bot):
self.bot = bot
@staticmethod
def fmt_error_embed() -> Embed:
"""
Format the Error Embed.
If the cht.sh search returned 404, overwrite it to send a custom error embed.
link -> https://github.com/chubin/cheat.sh/issues/198
"""
embed = Embed(
title=random.choice(ERROR_REPLIES),
description=ERROR_MESSAGE,
colour=Colours.soft_red
)
return embed
def result_fmt(self, url: str, body_text: str) -> t.Tuple[bool, t.Union[str, Embed]]:
"""Format Result."""
if body_text.startswith("# 404 NOT FOUND"):
embed = self.fmt_error_embed()
return True, embed
body_space = min(1986 - len(url), 1000)
if len(body_text) > body_space:
description = (f"**Result Of cht.sh**\n"
f"```python\n{body_text[:body_space]}\n"
f"... (truncated - too many lines)```\n"
f"Full results: {url} ")
else:
description = (f"**Result Of cht.sh**\n"
f"```python\n{body_text}```\n"
f"{url}")
return False, description
@commands.command(
name="cheat",
aliases=("cht.sh", "cheatsheet", "cheat-sheet", "cht"),
)
@commands.cooldown(1, 10, BucketType.user)
@whitelist_override(categories=[Categories.help_in_use])
async def cheat_sheet(self, ctx: Context, *search_terms: str) -> None:
"""
Search cheat.sh.
Gets a post from https://cheat.sh/python/ by default.
Usage:
--> .cht read json
"""
async with ctx.typing():
search_string = quote_plus(" ".join(search_terms))
async with self.bot.http_session.get(
URL.format(search=search_string), headers=HEADERS
) as response:
result = ANSI_RE.sub("", await response.text()).translate(ESCAPE_TT)
is_embed, description = self.result_fmt(
URL.format(search=search_string),
result
)
if is_embed:
await ctx.send(embed=description)
else:
await ctx.send(content=description)
def setup(bot: Bot) -> None:
"""Load the CheatSheet cog."""
bot.add_cog(CheatSheet(bot))
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