Add a dice roll command

commands/roll.js

@@ -0,0 +1,100 @@
+/*
+*  Konpeki Discord Bot - Slash Command Definition File
+*  lottery.js - Rolls X numbers from 1 - Y and returns them
+*/
+
+const { SlashCommandBuilder } = require('discord.js');
+const { randomInt } = require('node:crypto');
+
+module.exports = {
+	data: new SlashCommandBuilder()
+		.setName('roll')
+		.setDescription('Rolls a set of dice')
+
+		// Get number of numbers to roll
+		.addNumberOption(option =>
+			option.setName('die')
+				.setDescription('Type of dice to roll')
+				.addChoices(
+					{ name: 'd4', value: 4 },
+					{ name: 'd6', value: 6 },
+					{ name: 'd8', value: 8 },
+					{ name: 'd10', value: 10 },
+					{ name: 'd20', value: 20 },
+					{ name: 'd100', value: 100 },
+				))
+
+		// Get max number to roll
+		.addNumberOption(option =>
+			option.setName('count')
+				.setDescription('Amount of dice to roll'),
+		)
+
+		// Get max number to roll
+		.addNumberOption(option =>
+			option.setName('modifier')
+				.setDescription('+/- to a dice roll'),
+		)
+
+		// Optional Ephemeral check to allow user to choose command results to be shared publicly or private; send to self only if no selection.
+		.addStringOption(option =>
+			option.setName('ephemeral')
+				.setDescription('Post the avatar in the current channel')
+				.addChoices(
+					{ name: 'Send to me only', value: 'true' },
+					{ name: 'Send in channel', value: 'false' },
+				)),
+
+	async execute(interaction) {
+		const isEphemeral = interaction.options.getString('ephemeral') ?? 'true';
+		const rollCount = interaction.options.getNumber('count') ?? 1;
+		const dieType = interaction.options.getNumber('die') ?? 6;
+		const rollMod = interaction.options.getNumber('modifier') ?? 0;
+
+		let modSign = '';
+		let rollModStr = '';
+		let rollModNota = '';
+
+		// Limit numbers rollable to prevent spam and API issues
+		if (rollCount > 99) {
+			await interaction.reply({ content: `You want ${rollCount} numbers?! That's a bit much, even for me...\nTry 99 or less please!`, ephemeral: true });
+			return;
+		}
+		// Prevent 0 or less numbers
+		else if (rollCount < 1) {
+			await interaction.reply({ content: `It's kinda difficult to roll ${rollCount} numbers...\nTry a positive number!`, ephemeral:true });
+			return;
+		}
+
+		const diceRolls = [];
+		let rollSum = 0;
+
+		for (let i = 0; i < rollCount; i++) {
+			const randomNum = randomInt(1, dieType);
+
+			diceRolls.push(randomNum);
+			rollSum += randomNum;
+
+		}
+
+		if (rollMod < 0) {
+			modSign = '-';
+		}
+		else if (rollMod > 0) {
+			modSign = '+';
+		}
+
+		if (rollMod != 0) {
+			rollModStr = ' ' + modSign + ' ' + rollMod;
+			rollModNota = modSign + rollMod;
+		}
+
+		const diceRollsString = diceRolls.toString().split(',').join(' + ');
+
+		for (let i = 0; i < rollCount; i++) {
+			diceRolls.push(randomInt(1, dieType));
+		}
+
+		await interaction.reply({ content: `\`${rollCount}d${dieType}${rollModNota}\`\n\`Rolls: ( ${diceRollsString} )${rollModStr} = ${rollSum + rollMod}\``, ephemeral: (isEphemeral === 'true') });
+	},
+};