register-bot-commands.js

require('dotenv').config();

const guildRegisterURL = 'https://discord.com/api/v10/applications/' + process.env.APPLICATION_ID + '/guilds/' + process.env.GUILD_ID + '/commands'
const appRegisterURL = 'https://discord.com/api/v10/applications/' + process.env.APPLICATION_ID + '/commands'
const headers = {
    'Content-Type': 'application/json',
    'Authorization': 'Bot ' + process.env.BOT_TOKEN
}

const mode = (process.argv.includes('-g')) && 'guild' || 'app';
if (process.argv.length < 3) console.error('No commandline arguments specified, defaulting to application.\nUse -a to specify application, and -g to specify guild.');
(mode == 'guild') && console.log(`Registering commands to guild`) || console.log(`Registering application commands, remember that Discord rate limits this`);

const URL = (mode == 'app') ? appRegisterURL : guildRegisterURL;
const commandJSON = require('./bot-commands.json')
commandJSON.forEach(
    commandData => {
        //console.log(JSON.stringify(commandData))
        fetch(URL, {
            method: 'POST',
            headers: headers,
            body: JSON.stringify(commandData)
        }).then(
            res => {
                if (res.ok) {
                    console.log(`Successfully registered ${commandData.name}, response ${res.status} (${res.statusText})`)
                } else {
                    console.log(`Failed to register ${commandData.name}, response ${res.status} (${res.statusText})\n${res.text}`)
                };
            }
        ).catch(
            err => {
                console.error(`Failed to make request for ${commandData.name} (${err})`)
            }
        )
    }
)