const fs = require('fs');
const path = require('path');
const { MessageAttachment } = require('discord.js');

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

class LogCommand extends Command {

    constructor(client) {

        super(client, {
            name: 'log',
            module: 'developer',
            usage: '<date>',
            aliases: [
                'logs'
            ],
            arguments: [
                {
                    name: 'error',
                    aliases: ['errors'],
                    type: 'BOOLEAN',
                    types: ['FLAG', 'VERBAL'],
                    default: true
                },
                {
                    name: 'private',
                    type: 'BOOLEAN',
                    types: ['FLAG'],
                    default: true
                }
            ],
            restricted: true,
            showUsage: true,
            archivable: false
        });

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

        let directory = path.join(process.cwd(), 'logs');
        if(args.error) directory = path.join(directory, 'errors');
        
        const resolved = this.client.resolver.resolveDate(params.join(' '));
        if(!resolved) {
            return message.respond(`Unable to find a valid date syntax, must use \`YYYY-MM-DD\`.`, {
                emoji: 'failure'
            });
        }

        const date = resolved.format('YYYY-MM-DD');
        const filename = `${date}${args.error ? '-error' : ''}.log`;
        directory = path.join(directory, filename);

        if(!fs.existsSync(directory)) {
            return message.respond(`Unable to find a valid log file with that date.`, {
                emoji: 'failure'
            });
        }

        const text = fs.readFileSync(directory, { encoding: 'utf8' });
        const attachment = new MessageAttachment(Buffer.from(text), filename);

        message.respond(`Attached the log file matching that date.`, {
            files: [ attachment ],
            emoji: 'success',
            dm: Boolean(args.private)
        });
            
    }

}

module.exports = LogCommand;