Konpeki-Discord-Bot/commands/roll.js

/*
*  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 > 100) {
            await interaction.reply({ content: `You want ${rollCount} numbers?! That's a bit much, even for me...\nTry 100 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 + 1);

            diceRolls.push(randomNum);
            rollSum += randomNum;

        }

        if (rollMod < 0) {
            modSign = '-';
        }
        else if (rollMod > 0) {
            modSign = '+';
        }

        if (rollMod != 0) {
            rollModStr = ' ' + modSign + ' ' + Math.abs(rollMod);
            rollModNota = modSign + Math.abs(rollMod);
        }

        const diceRollsString = diceRolls.toString().split(',').join(' + ');

        for (let i = 0; i < rollCount; i++) {
            diceRolls.push(randomInt(1, dieType + 1));
        }

        await interaction.reply({ content: `\`${rollCount}d${dieType}${rollModNota}\`\n\`Rolls: ( ${diceRollsString} )${rollModStr} = ${rollSum + rollMod}\``, ephemeral: (isEphemeral === 'true') });
    },
};