Add qrcode command

package.json

@@ -3,6 +3,9 @@
   "version": "1.0.0",
   "description": "Discord utility bot",
   "main": "src/index.js",
+  "scripts": {
+    "start": "node --no-warnings src/index.js"
+  },
   "repository": {
     "type": "git",
     "url": "https://git.0xfffe.org/frostbide/frostbot"
@@ -19,6 +22,7 @@
     "dotenv": "^16.4.7",
     "fuzzball": "^2.1.3",
     "js-yaml": "^4.1.0",
-    "node-fetch": "^2.7.0"
+    "node-fetch": "^2.7.0",
+    "qrcode": "^1.5.4"
   }
 }

src/commands/slash/qrcode.js

@@ -0,0 +1,76 @@
+const { SlashCommandBuilder, EmbedBuilder } = require('@discordjs/builders');
+const { AttachmentBuilder } = require('discord.js');
+const QRCode = require('qrcode');
+
+module.exports = {
+  data: new SlashCommandBuilder()
+    .setName('qrcode')
+    .setDescription('QR-Code generator')
+    .addStringOption((option) =>
+      option
+        .setName('data')
+        .setDescription('The data to be encoded in the qr-code')
+        .setRequired(true)
+    )
+    .addStringOption((option) =>
+      option
+        .setName('error-correction')
+        .setDescription(
+          'The error correction level of the qr-code (Default: Medium)'
+        )
+        .addChoices(
+          { name: 'Low', value: 'L' },
+          { name: 'Medium', value: 'M' },
+          { name: 'Quartile', value: 'Q' },
+          { name: 'High', value: 'H' }
+        )
+        .setRequired(false)
+    )
+    .addIntegerOption((option) =>
+      option
+        .setName('version')
+        .setDescription('Version of qr-code')
+        .setMinValue(1)
+        .setMaxValue(40)
+        .setRequired(false)
+    ),
+  async run(context) {
+    const interaction = context.interaction;
+    const { options } = interaction;
+
+    const rawText = options.getString('data');
+    const version = options.getInteger('version');
+    const errorCorrectionLevel = options.getString('error-correction') || 'M';
+
+    await QRCode.toDataURL(
+      rawText,
+      {
+        errorCorrectionLevel,
+        version,
+      },
+      function (err, dataUrl) {
+        if (err) {
+          return interaction.reply({
+            content: 'Error',
+            ephemeral: true,
+          });
+        }
+
+        const generated = new AttachmentBuilder(
+          Buffer.from(dataUrl.split(',')[1], 'base64'),
+          { name: 'qrcode.png' }
+        );
+        const embed = new EmbedBuilder()
+          .setTitle('QR Code')
+          .setDescription(`Input data: \`${rawText}\``)
+          .setImage('attachment://qrcode.png')
+          .setColor(0x009bc2);
+
+        interaction.reply({
+          files: [generated],
+          embeds: [embed],
+        });
+      }
+    );
+  },
+};