var exec = require('child_process').exec;
var dbRoutes = require('./dbRoutes');
var fs = require('fs.extra');
var properties = require(process.env.SDNC_CONFIG_DIR + '/admportal.json');

var retURL = "";
var noCookieUrl = "";
var logoutUrl = "";

function logout(req,res){
	console.log("logout");
	req.session.loggedInAdmin = undefined;
	res.redirect('/login');
}

function login (req,res) {

	var tkn = req.sanitize(req.body._csrf);

	var loggedInAdmin={};
	var email = req.sanitize(req.body.email);
	var pswd = req.sanitize(req.body.password);
	dbRoutes.findAdminUser(email,res,function(adminUser)
	{
		// make sure correct password is provided
		if (pswd != adminUser.password) {
			res.render("pages/err", { result: { code:'error', msg:'Invalid password entered.' }, header:process.env.MAIN_MENU });
			return;
		}
		var loggedInAdmin = {
				email:adminUser.email,
				csrfToken: tkn,
				password:adminUser.password,
				privilege:adminUser.privilege
		}
		req.session.loggedInAdmin = loggedInAdmin;

		console.log("Login Success"+JSON.stringify(loggedInAdmin));
		res.redirect('sla/listSLA');
		return;
	});
}

function checkAuth(req,res,next){

	var host = req.get('host');
	var url = req.url;
	var originalUrl = req.originalUrl;

	console.log("checkAuth");

	var host = req.headers['host'];
	console.log('host=' + host);
	if(req.session == null || req.session == undefined 
		|| req.session.loggedInAdmin == null || req.session.loggedInAdmin == undefined)
	{
		console.log("loggedInAdmin not found.session timed out.");
		res.redirect('/login');
		//res.render('pages/login');
		return;
	}
	console.log("cookie is:  " + JSON.stringify(req.session.loggedInAdmin));
	next();
	return;
}

function checkPriv(req,res,next)
{
  var priv = req.session.loggedInAdmin;
  if(req.session == null || req.session == undefined 
		|| req.session.loggedInAdmin == null || req.session.loggedInAdmin == undefined)
  {
    res.render("pages/err", 
		{
			result: {code:'error', msg:'Unexpected null session.'}, 
			header: process.env.MAIN_MENU
		});
    return;
  }
  else
  {
    if (priv.privilege == 'A')
    {
      next();
      return;
    }
    else
    {
      res.render("pages/err", 
			{
				result: { code:'error', msg:'User does not have permission to run operation.'},
				header: process.env.MAIN_MENU
			});
      return;
    }
  }
}


exports.login = login;
exports.logout = logout;
exports.checkAuth = checkAuth;
exports.checkPriv = checkPriv;