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72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
"""
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TeX extension for qrm
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---
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Copyright (C) 2021 classabbyamp, 0x5c
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SPDX-License-Identifier: LiLiQ-Rplus-1.1
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"""
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import aiohttp
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from io import BytesIO
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from urllib.parse import urljoin
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import discord
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import discord.ext.commands as commands
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import common as cmn
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import data.options as opt
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class TexCog(commands.Cog):
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def __init__(self, bot: commands.Bot):
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self.bot = bot
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self.session = aiohttp.ClientSession(connector=bot.qrm.connector)
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with open(cmn.paths.resources / "template.1.tex") as latex_template:
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self.template = latex_template.read()
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@commands.command(name="tex", aliases=["latex"], category=cmn.Cats.UTILS)
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async def tex(self, ctx: commands.Context, *, expr: str):
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"""Renders a LaTeX expression.
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In paragraph mode by default. To render math, add `$` around math expressions.
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"""
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payload = {
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"format": "png",
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"code": self.template.replace("#CONTENT#", expr),
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"quality": 50
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}
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with ctx.typing():
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# ask rTeX to render our expression
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async with self.session.post(urljoin(opt.rtex_instance, "api/v2"), json=payload) as r:
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if r.status != 200:
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raise cmn.BotHTTPError(r)
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render_result = await r.json()
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if render_result["status"] != "success":
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embed = cmn.embed_factory(ctx)
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embed.title = "LaTeX Rendering Failed!"
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embed.description = ("Here are some common reasons:\n"
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"• Did you forget to use math mode? Surround math expressions with `$`,"
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" like `$x^3$`.\n"
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"• Are you using a command from a package? It might not be available.\n"
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"• Are you including the document headers? We already did that for you.")
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embed.colour = cmn.colours.bad
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await ctx.send(embed=embed)
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return
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# if rendering went well, download the file given in the response
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async with self.session.get(urljoin(opt.rtex_instance, "api/v2/" + render_result["filename"])) as r:
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png_buffer = BytesIO(await r.read())
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embed = cmn.embed_factory(ctx)
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embed.title = "LaTeX Expression"
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embed.description = "Rendered by [rTeX](https://rtex.probablyaweb.site/)."
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embed.set_image(url="attachment://tex.png")
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await ctx.send(file=discord.File(png_buffer, "tex.png"), embed=embed)
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def setup(bot: commands.Bot):
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bot.add_cog(TexCog(bot))
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