latex command

commands/message/utils/latex.js

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+const { paginator } = require("../../../labscore/client");
+const { createEmbed, page, formatPaginationEmbeds } = require("../../../labscore/utils/embed");
+const { codeblock } = require("../../../labscore/utils/markdown");
+const { editOrReply } = require("../../../labscore/utils/message");
+
+const { Permissions } = require("detritus-client/lib/constants");
+
+const TEX_REGEX = /(\$.*?\$)/g
+const TEX_URL = `https://latex.codecogs.com/png.image?\\inline&space;\\huge&space;\\dpi{200}&space;\\color{white}`
+
+module.exports = {
+  name: 'latex',
+  aliases: ['tex'],
+  label: 'content',
+  metadata: {
+    description: 'Renders LaTeX expressions.\nReply to a message to render TeX from it.',
+    description_short: 'LaTeX preview.',
+    category: 'utils',
+    usage: 'latex <expression>'
+  },
+  permissionsClient: [Permissions.EMBED_LINKS, Permissions.SEND_MESSAGES, Permissions.READ_MESSAGE_HISTORY, Permissions.USE_EXTERNAL_EMOJIS],
+  run: async (context, args) => {
+    context.triggerTyping();
+
+    let content = args.content
+    if (context.message.messageReference) {
+      let msg = await context.message.channel.fetchMessage(context.message.messageReference.messageId)
+      if(msg.content && msg.content.length) content = msg.content
+      if(msg.embeds?.length) for(const e of msg.embeds) if(e[1].description?.length) { content += '\n' + e[1].description; break; } 
+    }
+
+    let texBlocks = content.match(TEX_REGEX);
+
+    let pages = [];
+    for(const t of texBlocks){
+      let description;
+      if(args.content.includes('-i')) description = codeblock("tex", [t])
+      pages.push(page(createEmbed("default", context, {
+        description,
+        image: {
+          url: TEX_URL + encodeURIComponent(t.substr(1,t.length - 2))
+        }
+      })))
+    }
+
+    return await paginator.createPaginator({
+      context,
+      pages: formatPaginationEmbeds(pages)
+    });
+  },
+};