manager

#!/usr/bin/env node

'use strict';

const fs = require('fs');
const PATH_DB = 'db.json';

let rawdata = fs.readFileSync(PATH_DB);
let db = JSON.parse(rawdata);


switch (process.argv[2]) {
    case 'get':
        const commentGet = db.filter((comment) => {
            return comment.thread === process.argv[3];
        });
        console.log(commentGet);
    break;
    case 'last':
        const lastComments = db.sort((a, b) => b.createdAt - a.createdAt).slice(0, process.argv[3]).reverse();
        console.log(lastComments);
    break;

    case 'update':
        const commentsUpdate = db.map((comment) => {
            const temp = comment;
            if (temp.id === Number(process.argv[3])) {
                temp.message = process.argv[4];
            }
            return temp;
        });
        fs.writeFileSync(PATH_DB, JSON.stringify(commentsUpdate));
        console.log('Update!');
    break;
    case 'delete':
        const commentDelete = db.filter((comment) => {
            return comment.id !== Number(process.argv[3]);
        });
        fs.writeFileSync(PATH_DB, JSON.stringify(commentDelete));
        console.log('Delete!');
    break;
}