const http = require('http')
const url   = require('url');
// fs = filesystem
const fs = require('fs');
// utils 
var util = require('util');

// si on veut conserver les logs d'un instance à l'autre on "append"
// var logfile = fs.createWriteStream(process.cwd() + '/server.log', { flags: 'a' });
// si on veut reste on "write"
var logfile = fs.createWriteStream(process.cwd() + '/server.log', { flags: 'w' });
console.log = function () {
    let args = Array.from(arguments);
    args = args.map(function (value) {
        datetime=new Date();
        value="\n"+datetime.toLocaleString('fr-FR', {hour12: false}) + " - " + typeof(value) + " - " +value.toString();
        return(value);
    });
    logfile.write(args.join(''));
    process.stdout.write(util.format.apply(null, arguments) + '\n');
}


const server = http.createServer(function (request, response) {
  parsedUrl = url.parse(request.url, false);
  json_response(200,{status : "active"},response);
});

//cwd = current working dir
var default_env_file = process.cwd()+'/.env';
console.log(default_env_file);
var local_env_file = process.cwd()+'/.env.'+process.env['NODE_ENV'];
console.log(local_env_file);
// j'utilise fs pour savoir si j'a le droit de lire mon fichier env local
fs.access(local_env_file, fs.constants.R_OK, (err) => {
    //si je n'est pas le droit
    if(err) {
        console.log('loading  : '+ default_env_file);
        require('dotenv').config({ path: default_env_file });
    }
    //si ok charger l'environnement
    else {
        console.log('loading  : '+ local_env_file);
        require('dotenv').config({ path: local_env_file });
    }
    console.log('server port ? '+ process.env.SERVER_PORT);
    console.log('DB name ? '+ process.env.DB_NAME);
    server.listen(process.env.SERVER_PORT || 8080);
    datetime=new Date();
    console.log('server started at :'+datetime.toLocaleString('fr-FR', {hour12: false}));
    console.log("coucou",1,'server started at :'+datetime.toLocaleString('en-EN'),'server started at :'+datetime);
});

//usefull functions 
function json_response(code, object, response) {
    response.statusCode = 200;
    response.setHeader('content-type', 'Application/json');
    response.end(JSON.stringify(object));
}