// js handling the login procedures

// constants
var NORMAL_STATE = 4;
//var LOGIN_PREFIX = 'http://localhost/classificanet/security.asp?';
var LOGIN_PREFIX = '/security.asp?';

// variables
var http = getHTTPObject(); // We create the HTTP Object
var messages = '';

// validates a login request
function validarAnunciante()
{
	username = escape(document.getElementById('usuario').value);
	password = escape(document.getElementById('senha').value);

	if (username != '' && password  != '') {
		http.open('GET', LOGIN_PREFIX + 'acao=post&usuario='+username+'&senha='+password, true);
		http.onreadystatechange = handleHttpValidarAnunciante;
		http.send(null);
	}
}

// called when the validation results are returned from the server
function handleHttpValidarAnunciante()
{
	if (http.readyState == NORMAL_STATE) {
		results = http.responseText.split('|');

		if (results[0] == 'true')
		{
			document.form1.submit();
		}
		else
		{
			messages = results[1];
			exibirMensagem(messages,'erro');
			document.getElementById('usuario').value = '';
			document.getElementById('senha').value = '';
			document.getElementById('usuario').focus();
		}
	}
}

// validates a login request
function recuperarSenha()
{
	email = document.getElementById('email').value;

	if (email  != '') {
		http.open('GET', LOGIN_PREFIX + 'acao=recuperar&email='+email, true);
		http.onreadystatechange = handleHttpRecuperarSenha;
		http.send(null);
	}
}

function handleHttpRecuperarSenha()
{
	if (http.readyState == NORMAL_STATE) {
		results = http.responseText.split('|');
		messages = results[1];

		if (results[0] == 'true')
			exibirMensagem(messages,'sucesso');
		else
			exibirMensagem(messages,'erro');
			document.getElementById('email').value='';
			document.getElementById('email').focus();
	}
}


// cadastrar anunciante
function cadastrar()
{
	email = document.getElementById('emailCadastro').value;
	termosDeUso = document.getElementById('termosDeUso').checked;
	
	//Aceitar termos 
    if (!termosDeUso) {
    	alert("Para efetuar o seu cadastro é necessário que você\nconcorde com os nossos Termos de Adesão.");
	} else {
		if (validarEmail(email)) {
			http.open('GET', LOGIN_PREFIX + 'acao=cadastrar&email='+email, true);
			http.onreadystatechange = handleHttpCadastrar;
			http.send(null);
		} else {
			alert('E-mail Inválido');
			document.getElementById('emailCadastro').focus();
		}
	}
}

function handleHttpCadastrar()
{
	if (http.readyState == NORMAL_STATE) {
		results = http.responseText.split('|');
		messages = results[1];
		
		if (results[0] == 'true')
			exibirMensagem(messages,'sucesso');
		else {
			exibirMensagem(messages,'erro');
			document.getElementById('email').value='';
			document.getElementById('email').focus();
		}
	}
}

//Verifica se e-mail é válido
function validarEmail(emailStr) {
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);

	if (matchArray==null) {

	/* Too many/few @'s or something; basically, this address doesn't
	even fit the general mould of a valid e-mail address. */

	//alert("Email address seems incorrect (check @ and .'s)");
	return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	// Start by checking that only basic ASCII characters are in the strings (0-127).

	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	//alert("Ths username contains invalid characters.");
	return false;
	   }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	//alert("Ths domain name contains invalid characters.");
	return false;
	   }
	}

	// See if "user" is valid 

	if (user.match(userPat)==null) {

	// user is not valid

	//alert("The username doesn't seem to be valid.");
	return false;
	}

	/* if the e-mail address is at an IP address (as opposed to a symbolic
	host name) make sure the IP address is valid. */

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {

	// this is an IP address

	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	//alert("Destination IP address is invalid!");
	return false;
	   }
	}
	return true;
	}

	// Domain is symbolic name.  Check if it's valid.
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
		if (domArr[i].search(atomPat)==-1) {
			//alert("The domain name does not seem to be valid.");
			return false;
		}
	}

	/* domain name seems valid, but now make sure that it ends in a
	known top-level domain (like com, edu, gov) or a two-letter word,
	representing country (uk, nl), and that there's a hostname preceding 
	the domain or country. */

	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	//alert("The address must end in a well-known domain or two letter " + "country.");
	return false;
	}

	// Make sure there's a host name preceding the domain.
	if (len<2) {
		//alert("This address is missing a hostname!");
		return false;
	}
	
	return true;
}