/* BetterDiscordApp Utilities
 * Version: 2:1.0
 * Author: Jiiks | https://jiiks.net
 * Date: 31/10/2016
 * Last Update: 31/10/2016
 * Github: https://github.com/Jiiks/BetterDiscordApp
 * Git: https://github.com/Jiiks/BetterDiscordApp.git
 * License: MIT
 */
 
'use strict';

class Utils {
    
    //Get the latest commit hash from github
    getHash(callback) {
        this.download("api.github.com", "/repos/Jiiks/BetterDiscordApp/commits/master", data => {
            //TODO use the new soon to be implemented tryparse
            callback(JSON.parse(data).sha);
        });
    }
    
    download(host, path, callback) {
        _logger.log(`Downloading Resource: ${host}${path}`);
        var options = {
            host: host,
            path: path,
            headers: this.headers
        };
        
        _https.get(options, res => {
            var data = "";
            res.on('data', chunk => {
                data += chunk;
            });
            res.on('end', () => {
                callback(data);
            });
        }).on('error', () => {
            //TODO error logging
            callback(null);
        });
    }
    
    //Returns a datestring: [DD/MM/YYYY - HH:MM:SS]
    get dateString() {
        var d = new Date();

        return `${("00" + (d.getDate() + 1)).slice(-2)}/`   +
               `${("00" + d.getMonth()).slice(-2)}/`        +
               `${d.getFullYear()} - `                      +
               `${("00" + d.getHours()).slice(-2)}:`        +
               `${("00" + d.getMinutes()).slice(-2)}:`      +
               `${("00" + d.getSeconds()).slice(-2)}`;
    }
    
    get headers() {
        return { 'user-agent': 'Mozilla/5.0' };
    }
    
}

class Logger {

    constructor() {
        this.logs = "";
    }
    
    log(msg, severity) {
        var l = `[BD|${this.severity(severity)}][${_utils.dateString}] >>> ${msg}`;
        console.log(l);
        this.logs += `${l}${EOL}`;
    }
    
    save() {
        try {
            _fs.writeFileSync('logs.log', this.logs);
        }catch(err) {
            this.log("Failed to save logs! " + err, 2);
        }
    }
    
    severity(severity) {
        return {
            0: "INF",
            1: "WRN",
            2: "ERR"
        }[severity||0];
    }

}

const _utils = new Utils(),
      _logger = new Logger(),
      _fs = require('fs'),
      {EOL} = require('os'),
      _https = require('https');
      
exports._utils = _utils;
exports._logger = _logger;