feat: Add 7TV emote upload command

Author: konnatoad

src/commands/admin/misc/add7tv.js

@@ -0,0 +1,100 @@
+const {
+  Client,
+  SlashCommandBuilder,
+  PermissionFlagsBits,
+  MessageFlags
+} = require("discord.js");
+const fetch = (...args) =>
+  import("node-fetch").then(({ default: fetch }) => fetch(...args));
+const sharp = require("sharp");
+
+module.exports = {
+  /**
+   *
+   * @param {Client} client
+   * @param {import('discord.js').ChatInputCommandInteraction} interaction
+   */
+  run: async ({ client, interaction }) => {
+    try {
+      await interaction.deferReply({ flags: MessageFlags.Ephemeral });
+
+      if (!interaction.guild) return;
+
+      const url = interaction.options.getString("link", true).trim();
+      const match = url.match(/\/emotes\/([a-zA-Z0-9]{24,})/);
+
+      if (!match) {
+        return interaction.editReply(
+          "That doesn’t look like a valid 7TV emote link."
+        );
+      }
+
+      const emoteId = match[1];
+      const res = await fetch(`https://7tv.io/v3/emotes/${emoteId}`);
+
+      if (!res.ok) {
+        return interaction.editReply("Couldn’t reach the 7TV API 😢");
+      }
+
+      const emote = await res.json();
+      const file =
+        [...emote.host.files]
+          .filter((f) => f.format === "WEBP")
+          .sort((a, b) => b.width - a.width)[0] || emote.host.files[0];
+
+      const fileUrl = `https:${emote.host.url}/${file.name}`;
+
+      const imgBuf = Buffer.from(await (await fetch(fileUrl)).arrayBuffer());
+
+      let finalBuf = imgBuf;
+
+      // If the file is already < 256 KB, don't touch it
+      if (imgBuf.length > 256_000) {
+        finalBuf = await sharp(imgBuf)
+          .resize(256, 256, { fit: "inside" })
+          .png()
+          .toBuffer();
+
+        if (finalBuf.length > 256_000) {
+          return interaction.editReply(
+            "Still too chunky after resizing (>256 kB)."
+          );
+        }
+      }
+
+      if (finalBuf.length > 256_000) {
+        return interaction.editReply(
+          "Still too chunky after resizing (>256 kB)."
+        );
+      }
+
+      const name = (
+        interaction.options.getString("name") || emote.name
+      ).replace(/[^a-z0-9_]/gi, "_");
+
+      const emoji = await interaction.guild.emojis.create({
+        attachment: finalBuf,
+        name
+      });
+
+      interaction.editReply(`Added ${emoji.toString()}  \`:${emoji.name}:\``);
+    } catch (err) {
+      console.error("Error adding 7TV emote:", err);
+      interaction.editReply("Something went wrong trying to add that emote.");
+    }
+  },
+
+  data: new SlashCommandBuilder()
+    .setName("add7tv")
+    .setDescription("Add a 7TV emote to this server")
+    .addStringOption((option) =>
+      option
+        .setName("link")
+        .setDescription("Full 7TV emote URL")
+        .setRequired(true)
+    )
+    .addStringOption((option) =>
+      option.setName("name").setDescription("Custom emoji name (optional)")
+    )
+    .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
+};