tritan-starboards/src/handlers/reactionRemove.js

A starboards node module for discord.js

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

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;

  manager.emit("starboardReactionRemove", emoji, message, user);

  const reaction = message.reactions.cache.get(emoji);

  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(
      `^${data.options.emoji}\\s([0-9]{1,3})\\s\\|\\s([0-9]{17,20})`
    );
    const stars = regex.exec(starMessage.embeds[0].footer.text);
    const foundStar = starMessage.embeds[0];
    const image = (foundStar.image && foundStar.image.url) || "";
    const starEmbed = new MessageEmbed()
      .setColor(
        getColor(data.options.color, parseInt(stars[1]) - 1) || foundStar.color
      )
      .setDescription(foundStar.description || "")
      .setAuthor(message.author.tag, message.author.displayAvatarURL())
      .setTimestamp()
      .setFooter(
        `${data.options.emoji} ${parseInt(stars[1]) - 1} | ${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(() => {});
    // eslint-disable-next-line no-empty-function
    if (
      parseInt(stars[1]) - 1 == 0 ||
      (reaction && reaction.count < data.options.threshold)
    )
      return starMsg.delete({ timeout: 1000 }).catch(() => {});
  }
};

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;
}