Haha-Yes/commands/admin/tag.js

const { Command } = require('discord-akairo');
const fs = require('fs');

class TagCommand extends Command {
	constructor() {
		super('tag', {
			aliases: ['tag'],
			category: 'admin',
			split: 'quoted',
			args: [
				{
					id: 'trigger',
					type: 'string'
				},
				{
					id: 'response',
					type: 'string'
				}
			],
			channelRestriction: 'guild',
			description: {
				content: 'Create custom autoresponse',
				usage: '[trigger] [response]',
				examples: ['do you know da wea', 'Fuck off dead meme']
			}
		});
	}

	async exec(message, args) {
		let trigger = args.trigger;
		let response = args.response;

		trigger = trigger.toLowerCase();

		let customresponse = {};
		let json = JSON.stringify(customresponse);

		fs.readFile(`./tag/${message.guild.id}.json`, 'utf8', function readFileCallback(err, data) {
			if (err) {
				fs.writeFile(`./tag/${message.guild.id}.json`, `{'${trigger}':'${response}'}`, function (err) {
					if (err) {
						fs.close();
						console.log(err);
					}
				});
			} else {
				customresponse = JSON.parse(data); //now it an object
				customresponse[trigger] = response;
				json = JSON.stringify(customresponse); //convert it back to json
				fs.writeFile(`./tag/${message.guild.id}.json`, json, 'utf8', function (err) {
					if (err) {
						fs.close();
						return console.log(err);
					}
				});
			}
		});

		fs.close();
		return message.channel.send(`autoresponse have been set to ${trigger} : ${response}`);
	}
}

module.exports = TagCommand;