const { SlashCommandBuilder } = require("discord.js");
const fs = require('fs/promises');
const { EMOTE_DIR } = process.env;

module.exports = {
  data: new SlashCommandBuilder()
    .setName("dl")
    .setDescription("Downloads the emote input (local).")
    .addStringOption(option =>
        option.setName("emotes")
            .setDescription("The emotes to download.")
            .setRequired(true)
    ),
  async execute(interaction) {
    await interaction.deferReply();

    // this regex matches emotes in the format <:name:id> or <a:n>
    let emoteIdRegex = /<(?<animated>a?):(?<name>\w{0,22})\w*:(?<id>\d+)>/gm;
    let replyMessage = "";
    const input = interaction.options.getString("emotes");
    // remove duplicates from the emote list
    let emoteList = input.matchAll(emoteIdRegex);
    emoteList = [...new Set(emoteList)].join(" ");
    for (const match of emoteList.matchAll(emoteIdRegex)) {
      const link = "https://cdn.discordapp.com/emojis/" + match.groups.id + ((match.groups.animated == 'a') ? ".gif": ".webp") + "?quality=lossless";
      const copyname = match.groups.name + "_FE";
      const response = await fetch(link);
      // save the file
      await fs.writeFile(`${EMOTE_DIR}${copyname}${(match.groups.animated == 'a') ? ".gif": ".webp"}`, response.body);
      await interaction.editReply(`Dowloaded ${match[0]}!\n`);
      replyMessage += `Logged ${match[0]}!\n`;
    }

    await interaction.editReply("Done!");
  },
};