const { inspect } = require('util');
const { username } = require('os').userInfo();
const { stripIndents } = require('common-tags');

let _storage = null; //eslint-disable-line no-unused-vars

const { Command, Argument } = require('../../../../interfaces/');



class Evaluate extends Command {

    constructor(client) {

        super(client, {
            name: 'evaluate',
            module: 'developer',
            aliases: [
                'eval', 
                'e'
            ],
            restricted: true,
            description: "Evaluates javascript code.",
            arguments: [
                new Argument(client, {
                    name: 'log',
                    type: 'BOOLEAN',
                    types: ['FLAG'],
                    description: "Logs the output in the console."
                }),
                new Argument(client, {
                    name: 'hide',
                    type: 'BOOLEAN',
                    types: ['FLAG'],
                    description: "Hides the output from the channel."
                })
            ]
        });

    }

    async execute(message, { params, args }) {

        params = params.join(' ');

        try {
            let evaled = eval(params);
            if(evaled instanceof Promise) await evaled;
            if(typeof evaled !== 'string') evaled = inspect(evaled);

            evaled = evaled
                .replace(new RegExp(this.client.token, 'g'), '<redacted>')
                .replace(new RegExp(username, 'g'), '<redacted>');

            if(args.log) this.client.logger.debug(`[${message.author.tag}] Evaluation Result: ${evaled}`);

            if(evaled.length > 2000) evaled = `${evaled.substring(0, 1900)}...`;
            await message.respond(stripIndents`Evaluation was successful.
                \`\`\`js
                ${evaled}\`\`\``, 
            { emoji: 'success' });


        } catch(error) {

            let message = `${error}${error.stack ? `\n${error.stack}` : ''}`;

            if(args.log) this.client.logger.debug(`[${message.author.tag}] Evaluation Failed: ${message}`);

            if(message.length > 2000) message = `${message.substring(0, 1900)}...`;
            await message.respond(stripIndents`Evaluation failed.
                \`\`\`js
                ${message}\`\`\``, 
            { emoji: 'failure' });

        }
            
    }

}

module.exports = Evaluate;