index.ts

import { Client, Intents } from "discord.js";
import fetch from "node-fetch";
import { config } from "dotenv";

config();

const client = new Client({
  intents: [
    Intents.FLAGS.GUILDS,
    Intents.FLAGS.GUILD_MESSAGES,
    Intents.FLAGS.GUILD_MESSAGE_REACTIONS,
  ],
  partials: ["MESSAGE", "CHANNEL", "REACTION"],
});

client.once("ready", () => {
  console.log("Ready!");
});
const atodemiru = "808566487983587338";
const test = "800186124613451806";
client.on("messageReactionAdd", async (reaction, user) => {
  console.log("test");
  if (reaction.message.partial) {
    try {
      await reaction.message.fetch();
    } catch (error) {
      console.error("Something went wrong when fetching the message: ", error);
    }
  }
  if (reaction.message.channel.id === atodemiru && reaction.count === 1) {
    reaction.message.pin();
  } else if (reaction.message.channel.id === test && reaction.count === 1) {
    reaction.message.pin();
  }
  // console.log(reaction.count);
  // console.log(`${user.username} reacted with "${reaction.emoji.name}".`);
});

client.on("messageReactionRemove", async (reaction, user) => {
  if (reaction.message.partial) {
    try {
      await reaction.message.fetch();
    } catch (error) {
      console.error("Something went wrong when fetching the message: ", error);
    }
  }

  console.log(
    `${user.username} removed their "${reaction.emoji.name}" reaction.`
  );
});
client.on("messageCreate", async (message) => {
  if (message.author.bot) {
    return;
  }
  if (message.content.startsWith("https://github.com/")) {
    const url = message.content;
    const newurl = url.replace(
      /^(.*\/\/github.com\/.+\/.+\/)blob(\/.+)$/i,
      "$1raw$2"
    );
    const paragraph = url.split("#");
    if (paragraph[1] != null) {
      console.log("Where you want to display is existing.");
      (async () => {
        try {
          const response = await fetch(newurl);
          let sendtext = "";
          const body = await response.text();
          const lines = body.split("\n");
          // 拡張子を取得
          const fileType = paragraph[0]
            .split("/")
            .slice(-1)[0]
            .split(".")
            .slice(-1)[0];
          const LineNumber = paragraph[1].split("-");
          // 行始めと行終わりを取得
          if (LineNumber.length === 2) {
            const begin = Number(LineNumber[0].substring(1)) - 1;
            const end = Number(LineNumber[1].substring(1));
            console.log({ begin, end });
            sendtext = lines.slice(begin, end).join("\n");
          } else if (LineNumber.length === 1) {
            const begin = Number(LineNumber[0].substring(1)) - 1;
            sendtext = lines.slice(begin, begin + 1).join("\n");
          } else {
            console.log("error");
          }

          // テンプレートリテラル
          message.channel.send(` \`\`\`${fileType}\n${sendtext}  \`\`\``);
        } catch (error) {
          console.log(error);
        }
      })();
    }
  }
});
client.login(process.env.DISCORD_TOKEN);