Appwrite Cloud Function as a simple Discord Moderation Bot

index.js

const sdk = require("node-appwrite");
const { Client, Intents, MessageEmbed } = require('discord.js');

let client = null;
let appwrite = null;
let database = null;

// This is the entry point for our cloud function 
module.exports = async function (req, res) {
  if (client) {
    res.send("Already initialized");
    return
  }
  initClient(req);
  res.send("Initialization Complete!");
};

// This is ran once to init the Discord.js client.
function initClient(req) {
  appwrite = new sdk.Client();
  appwrite = appwrite
    .setEndpoint(req.env['APPWRITE_FUNCTION_ENDPOINT'])
    .setProject(req.env['APPWRITE_FUNCTION_PROJECT_ID'])
    .setKey(req.env['APPWRITE_FUNCTION_API_KEY'])
    .setSelfSigned(true);

  database = new sdk.Database(appwrite);

  client = new Client({ intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.GUILD_MESSAGES] });

  client.once('ready', () => {
    console.log('Ready!');
  });

  client.on('messageCreate', async (message) => {
    // Ignore bots
    if (message.author.bot) return;

    let command = message.content.split(' ')[0];
    let params = message.content.split(' ').slice(1);

    // Our first command
    switch (command) {
      case '!hello':
        message.channel.send('world!');
        break;
      case '!warn':
        if (message.member.permissions.has('MANAGE_MESSAGES')) {
          let member = message.mentions.members.first().user;
          let reason = params.slice(1).join(' ').trim();
          let warnings = 0;
          if (!member || !reason) {
            message.channel.send("The command should be formatted as: `!warn <@member> <reason>`");
            return
          }

          try {
            let { documents, total } = await database.listDocuments(req.env['COLLECTION_ID'], [sdk.Query.equal("member", member.id)], 1);
            if (total < 1) {
              await database.createDocument(req.env['COLLECTION_ID'], 'unique()',
                {
                  "member": member.id,
                  "warnings": 1,
                  "reasons": [reason]
                });
              warnings = 1;
            }
            else {
              id = documents[0]["$id"]
              warnings = documents[0]["warnings"] + 1;
              const reasons = documents[0]["reasons"].concat([reason]);
              await database.updateDocument(req.env['COLLECTION_ID'], id, {
                "warnings": warnings,
                "reasons": reasons
              });
            }
          }
          catch (e) {
            message.channel.send("Something broke when logging warning to Appwrite!");
            console.log(e);
            return;
          }

          let warnEmbed = new MessageEmbed()
            .setColor('#ff0000')
            .setTitle('Warn')
            .setDescription(`${member.username} has been warned for ${reason}. ${member.username} has been warned ${warnings} times!`);
          message.channel.send({ embeds: [warnEmbed] });
          if (warnings >= 3) {
            message.mentions.members.first().ban();
            message.channel.send(`${member.username} has been banned for 3 warnings!`);
          }

        }
        else {
          message.channel.send("You don't have permission to use !warn");
        }
      case '!record':
        if (message.member.permissions.has('MANAGE_MESSAGES')) {
          let member = message.mentions.members.first().user;
          let warnings = 0;
          if (!member) {
            message.channel.send("The command should be formatted as: `!record <@member>`");
            return
          }

          try {
            let { documents, total } = await database.listDocuments(req.env['COLLECTION_ID'], [sdk.Query.equal("member", member.id)], 1);
            if (total < 1) {
              warnings = 0
            }
            else {
              id = documents[0]["$id"]
              warnings = documents[0]["warnings"];
            }
          }
          catch (e) {
            message.channel.send("Something broke while trying to fetch past warnings from Appwrite!");
            return;
          }

          let recordEmbed = new MessageEmbed()
            .setColor('#00ff00')
            .setTitle('Warning Record')
            .setDescription(`${member.username} has been warned ${warnings} times!`);
          message.channel.send({ embeds: [recordEmbed] });
        }
        else {
          message.channel.send("You don't have permission to use !record");
        }

    }
  });

  client.login(req.env['DISCORD_TOKEN']);
}