tritan-starboards/src/handlers/reactionAdd.js

A starboards node module for discord.js

const { MessageEmbed } = require("discord.js");
const axios = require("axios");

module.exports = async (manager, emoji, message, user) => {
  const data = manager.starboards.find(
    (channelData) =>
      channelData.guildID === message.guild.id &&
      channelData.options.emoji === emoji
  );
  if (!data) return;

  const starChannel = manager.client.channels.cache.get(data.channelID);
  if (!starChannel) return;

  if (emoji !== data.options.emoji || user.bot) return;

  if (!data.options.allowNsfw && message.channel.nsfw) {
    message.reactions.resolve(emoji).users.remove(user.id);
    return manager.emit("starboardReactionNsfw", emoji, message, user);
  }

  if (message.author.id === user.id && !data.options.selfStar) {
    message.reactions.resolve(emoji).users.remove(user.id);
    return manager.emit("starboardNoSelfStar", emoji, message, user);
  }

  if (message.author.bot && !data.options.starBotMsg) {
    message.reactions.resolve(emoji).users.remove(user.id);
    return manager.emit("starboardNoStarBot", emoji, message, user);
  }

  const reaction = message.reactions.cache.get(emoji);
  if (reaction && reaction.count < data.options.threshold) return;

  const fetchedMessages = await starChannel.messages.fetch({ limit: 100 });
  const starMessage = fetchedMessages.find(
    (m) =>
      m.embeds[0] &&
      m.embeds[0].footer &&
      m.embeds[0].footer.text.startsWith(data.options.emoji) &&
      m.embeds[0].footer.text.endsWith(message.id)
  );

  if (starMessage) {
    const regex = new RegExp(
      `^${data.options.emoji}\\s([0-9]{1,3})\\s\\|\\s([0-9]{17,20})`
    );
    const stars = regex.exec(starMessage.embeds[0].footer.text);
    const foundStar = starMessage.embeds[0];
    const image = (foundStar.image && foundStar.image.url) || "";
    const count =
      reaction && reaction.count ? reaction.count : parseInt(stars[1]) + 1;
    const starEmbed = new MessageEmbed()
      .setColor(getColor(data.options.color, count) || foundStar.color)
      .setDescription(foundStar.description || "")
      .setAuthor(message.author.tag, message.author.displayAvatarURL())
      .setTimestamp()
      .setFooter(
        `${data.options.emoji} ${count} | #${message.channel.name} | ${message.id}`
      )
      .setImage(image);
    const starMsg = await starChannel.messages.fetch(starMessage.id);
    // eslint-disable-next-line no-empty-function
    await starMsg.edit({ embed: starEmbed }).catch(() => {});
    manager.emit("starboardReactionAdd", emoji, message, user);
  }

  if (!starMessage) {
    let embedImage = "";
    let embedContent = "";

    if (message.embeds.length > 0 && data.options.starEmbed) {
      if (message.embeds[0].footer && message.embeds[0].footer.text) {
        const alreadyInStarboard = !!fetchedMessages.find(
          (m) =>
            m.embeds[0] &&
            m.embeds[0].footer &&
            m.embeds[0].footer.text.startsWith(data.options.emoji) &&
            m.embeds[0].footer.text.endsWith(
              message.embeds[0].footer.text.split(" | ")[1]
            )
        );
        if (alreadyInStarboard)
          return manager.emit("starboardAlreadyStarred", emoji, message, user);
      }
      embedImage = message.embeds[0].image;
      embedContent = message.embeds[0].description;
    }

    let content = "";
    if (message.cleanContent)
      content =
        message.cleanContent.length > 2000
          ? message.cleanContent.slice(0, 2000) + "\n..."
          : message.cleanContent;
    else content = embedContent ? embedContent : "";

    let image = data.options.attachments
      ? message.attachments.size > 0
        ? await extension(message.attachments.array()[0].url)
        : ""
      : "";
    if (image === "")
      image = embedImage ? (embedImage.url ? embedImage.url : "") : "";
    if (image === "" && data.options.resolveImageUrl) {
      const regex = /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)/;
      let url = content.match(regex);
      if (url) {
        url = url[0];
        const response = await axios.get(url);
        const mimeType = response.headers["content-type"];
        if (mimeType.startsWith("image/")) image = url;
      }
    }

    if (image === "" && content === "")
      return manager.emit("starboardNoEmptyMsg", emoji, message, user);

    const starEmbed = new MessageEmbed()
      .setColor(getColor(data.options.color))
      .setDescription(
        content !== ""
          ? `${content}\n\n[${manager.options.translateClickHere(message)}](${
              message.url
            })`
          : ""
      )
      .setAuthor(message.author.tag, message.author.displayAvatarURL())
      .setTimestamp()
      .setFooter(
        `${data.options.emoji} ${
          reaction && reaction.count ? reaction.count : 1
        } | #${message.channel.name} | ${message.id}`
      )
      .setImage(image);
    starChannel.send({ embed: starEmbed });
    manager.emit("starboardReactionAdd", emoji, message, user);
  }
};

function extension(attachment) {
  const imageLink = attachment.split(".");
  const typeOfImage = imageLink[imageLink.length - 1];
  const image = /(jpg|jpeg|png|gif)/gi.test(typeOfImage);
  if (!image) return "";
  return attachment;
}

function getColor(color, stars = 1) {
  if (typeof color === "string") return color;
  else if (typeof color === "object" && color.colors && color.max) {
    const indice = Math.max(
      Math.min(
        Math.floor(stars - (1 / color.max) * color.colors.length),
        color.colors.length - 1
      ),
      0
    );
    return color.colors[indice];
  } else return null;
}