/*
 * Functions:
 *  AjaxInit
 *  Init
 *  TryLoginHandler
 *  LoginErrorHandler
 *  LoginHandler
 *  SetCheckingAccountHandler
 *  SetStateTextHandler
 *  SetCheckingFolderHandler
 *  SetRetrievingMessageHandler
 *  SetDeletingMessageHandler
 *  EndCheckMailHandler
 *  CheckEndCheckMailHandler
 * Classes:
 *  CLoginScreen
 *  CTip
 */

var WebMail;
var LoginScreen;
var ScriptLoader;
var infoObj, infoMessage;
var Browser;
var NetLoader;
var checkMail;

var timerlen = 5;
var slideAniLen = 500;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function AjaxInit()
{
	infoObj = document.getElementById('info');
	infoMessage = document.getElementById('info_message');
	LoginScreen.AjaxInit(TryLoginHandler);
}

function Init()
{
	Browser = new CBrowser();
	if (!Browser.Allowed)
		isAjax = false;
	
	NetLoader = new CNetLoader();
	var transport = NetLoader.GetTransport();
	if (!transport)
		isAjax = false;
	
	checkMail = new CCheckMail(1);
	
	LoginScreen = new CLoginScreen();
	if (isAjax) {
		ScriptLoader = new CScriptLoader();
		ScriptLoader.Load(Sections[SECTION_LOGIN].Scripts, AjaxInit);
	}
}

function TryLoginHandler()
{
	infoObj.className = 'wm_information';
	infoMessage.innerHTML = Lang.Loading;
	NetLoader.LoadXMLDoc(ActionUrl, 'xml=' + encodeURIComponent(this.Xml), LoginHandler, LoginErrorHandler);
}

function LoginErrorHandler()
{
	infoObj.className = 'wm_hide';
	LoginScreen.ShowError(this.ErrorDesc);
}

function LoginHandler()
{
	infoObj.className = 'wm_hide';
	var XmlDoc = this.responseXML;
	if (XmlDoc && XmlDoc.documentElement && typeof(XmlDoc) == 'object' &&
	 typeof(XmlDoc.documentElement) == 'object') {
		var RootElement = XmlDoc.documentElement;
		if (RootElement && RootElement.tagName == 'webmail') {
			var ErrorTag = RootElement.getElementsByTagName('error')[0];
			if (ErrorTag) {
				var ErrorDesc = ErrorTag.childNodes[0].nodeValue;
				if (ErrorDesc && ErrorDesc.length > 0) {
					LoginScreen.ShowError(ErrorDesc);
				}
				else {
					LoginScreen.ShowError(Lang.ErrorWithoutDesc);
				}
			}
			else {
				var Objects = RootElement.childNodes;
				if ( Objects.length == 0 ) {
					LoginScreen.ShowError(Lang.ErrorEmptyXmlPacket);
				}
				else {
					var iCount = Objects.length;
					for (var i=iCount-1; i>=0; i--) {
						if (Objects[i].tagName == 'login') {
							hash = '';
							id = -1;
							var attr = Objects[i].getAttribute('id_acct'); if (attr) id = attr - 0;
							var hashParts = Objects[i].childNodes;
							var jCount = hashParts.length;
							for (var j = jCount-1; j >= 0; j--) {
								var part = hashParts[j].childNodes;
								if (part.length > 0 && hashParts[j].tagName == 'hash')
									hash = part[0].nodeValue;
							}
							if (id != -1 && hash != '') {
								CreateCookie('awm_autologin_data', hash, 14);
								CreateCookie('awm_autologin_id', id, 14);
							}
							checkMail.Start();
							
						}
					}
				}
			}//if (ErrorTag)
		}
		else {
			LoginScreen.ShowError(Lang.ErrorParsing + '<br/>Error code 2.<br/>' + Lang.ResponseText + '<br/>' + this.responseText);
		}//if (RootElement)
	}
	else {
		LoginScreen.ShowError(Lang.ErrorParsing + '<br/>Error code 1.<br/>' + Lang.ResponseText + '<br/>' + this.responseText);
	}//if (XmlDoc)
}

function SetCheckingAccountHandler(accountName)
{
	LoginScreen.Hide();
	checkMail.SetAccount(accountName);
}

function SetStateTextHandler(text)
{
	checkMail.SetText(text);
}

function SetCheckingFolderHandler(folder, count)
{
	checkMail.SetFolder(folder, count);
}

function SetRetrievingMessageHandler(number)
{
	checkMail.SetMsgNumber(number);
}

function SetDeletingMessageHandler(number)
{
	checkMail.DeleteMsg(number);
}

function EndCheckMailHandler(error)
{
	if (error == 'session_error') {
		document.location = LoginUrl + '?error=1';
	}
	else {
		document.location = WebMailUrl;
	}
}

function CheckEndCheckMailHandler() {
	if (checkMail.started) {
		document.location = WebMailUrl;
	}
}

function CLoginScreen()
{
	this.isBuilded = true;
	this.Tip = new CTip();
	this._isAjax = false;

	this._container = document.getElementById('login_screen');
	this._loginError = document.getElementById('login_error');
	
	if (AdvancedLogin == 1) {
		this._mode = 'advanced';
	}
	else {
		this._mode = 'standard';
	}
	this._incoming = document.getElementById('incoming');
	this._incProtocol = document.getElementById('inc_protocol');
	this._outgoing = document.getElementById('outgoing');
	this._authentication = document.getElementById('authentication');
	this.LoginForm = document.getElementById('login_form');
	this._loginTable = document.getElementById('login_table');
	this._email = document.getElementById('email');
	this._emailCont = document.getElementById('email_cont');
	this._login = document.getElementById('login');
	this._loginCont = document.getElementById('login_cont');
	this._loginParent = document.getElementById('login_parent');
	this._domain = document.getElementById('domain');
	this._password = document.getElementById('password');
	this._incServer = document.getElementById('inc_server');
	this._incPort = document.getElementById('inc_port');
	this._outServer = document.getElementById('out_server');
	this._outPort = document.getElementById('out_port');
	this._smtpAuth = document.getElementById('smtp_auth');
	this._signMe = document.getElementById('sign_me');
	this.Init();
	this.MakeView();
}

CLoginScreen.prototype = {
	Init: function ()
	{
		var obj = this;
		this.LoginForm.onsubmit = function () {
			if (!obj.CheckLoginForm()) return false;
		}
		/* email */
		this._email.onfocus = function () {
			this.className = 'wm_input_focus';
			obj.EmailFocus();
		}
		this._email.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('email');
		}
		/* login */
		this._login.onfocus = function () {
			this.className = 'wm_input_focus';
			obj.LoginFocus();
		}
		this._login.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('login');
		}
		/* password */
		this._password.onfocus = function () {
			this.className = 'wm_input_focus wm_password_input';
			obj.PasswordFocus();
		}
		this._password.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('password');
		}
		if (this._incServer == null) return;
		
		/* incoming mail */
		this._incServer.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('inc_server');
		}
		this._incPort.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('inc_port');
		}
		this._incProtocol.onchange = function () {
			if (this.value == IMAP4_PROTOCOL)
				obj._incPort.value = IMAP4_PORT;
			else
				obj._incPort.value = POP3_PORT;
		}
		/* ougoing mail */
		this._outServer.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('out_server');
		}
		this._outPort.onkeypress = function (ev) {
			if (!isEnter(ev)) obj.Tip.Hide('out_port');
		}
	},
	
	MakeView: function ()
	{
		var isAdvancedMode = this._mode == 'advanced' || AdvancedLogin == '1';
		if (isAdvancedMode) {
			this._emailCont.className = '';
			this._email.tabIndex = 1;
			this._loginCont.className = '';
			this._login.tabIndex = 2;
		}
		else if (HideLoginMode >= 20) {
			this.Tip.Hide('email');
			this._emailCont.className = 'wm_hide';
			this._email.tabIndex = -1;
			this._loginCont.className = '';
			this._login.tabIndex = 2;
		}
		else if (HideLoginMode >= 10) {
			this.Tip.Hide('login');
			this._emailCont.className = '';
			this._email.tabIndex = 1;
			this._loginCont.className = 'wm_hide';
			this._login.tabIndex = -1;
		}
		if (isAdvancedMode || HideLoginMode != 21 && HideLoginMode != 23) {
			this._login.style.width = '99%';
			this._domain.innerHTML = '';
		}
		else {
			this._login.style.width = '150px';
			this._domain.innerHTML = '&nbsp;@' + DomainOptional;
		}
	},
	
	EmailFocus: function ()
	{
		this._email.select();
	},

	LoginFocus: function ()
	{
		if (this._login.value.length == 0 && this._email.value.length != 0) {
			this._login.value = this._email.value;
		}
		this._login.select();
	},

	PasswordFocus: function ()
	{
		this._password.select();
	},

	CheckLoginForm: function()
	{
		var val = new CValidate();
		this.Tip.Hide('');
		var isAdvancedMode = this._mode == 'advanced' || AdvancedLogin == '1';
		/* email */
		var vEmail = Trim(this._email.value);
		if (val.IsEmpty(vEmail) && (isAdvancedMode || HideLoginMode < 20)) {
			this.Tip.Show(Lang.WarningEmailBlank, this._email, 'email');
			return false;
		}
		if (!val.IsCorrectEmail(vEmail) && (isAdvancedMode || HideLoginMode < 20)) {
			this.Tip.Show(Lang.WarningCorrectEmail, this._email, 'email');
			return false;
		}
		/* login */
		var vLogin = Trim(this._login.value);
		if (val.IsEmpty(vLogin) && (isAdvancedMode || HideLoginMode != 10 && HideLoginMode != 11)) {
			this.Tip.Show(Lang.WarningLoginBlank, this._login, 'login');
			return false;
		}
		/* password */
		var vPassword = Trim(this._password.value);
		if (val.IsEmpty(vPassword)) {
			this.Tip.Show(Lang.WarningPassBlank, this._password, 'password');
			return false;
		}
		if (this._incServer == null) return true;
		
		/* incoming mail */
		var vIncServer = Trim(this._incServer.value);
		if (val.IsEmpty(vIncServer) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningIncServerBlank, this._incPort, 'inc_server');
			return false;
		}
		if (!val.IsCorrectServerName(vIncServer) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningCorrectIncServer, this._incPort, 'inc_server');
			return false;
		}
		var vIncPort = Trim(this._incPort.value);
		if (val.IsEmpty(vIncPort) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningIncPortBlank, this._incPort, 'inc_port');
			return false;
		}
		else if (!val.IsPort(vIncPort) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningIncPortNumber + '<br />' + Lang.DefaultIncPortNumber, this._incPort, 'inc_port');
			return false;
		}
		/* outgoing mail */
		var vOutServer = Trim(this._outServer.value);
		if (val.IsEmpty(vOutServer) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningOutServerBlank, this._outPort, 'out_server');
			return false;
		}
		if (!val.IsCorrectServerName(vOutServer) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningCorrectSMTPServer, this._outPort, 'out_server');
			return false;
		}
		var vOutPort = Trim(this._outPort.value);
		if (val.IsEmpty(vOutPort) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningOutPortBlank, this._outPort, 'out_port');
			return false;
		}
		if (!val.IsPort(vOutPort) && (isAdvancedMode)) {
			this.Tip.Show(Lang.WarningOutPortNumber + '<br />' + Lang.DefaultOutPortNumber, this._outPort, 'out_port');
			return false;
		}
		return true;
	},
	
	SendLoginForm: function ()
	{
		if (!this.CheckLoginForm()) return;
		var incServer = 'localhost';
		var incPort = '110';
		var incProtocol = '0';
		var outServer = 'localhost';
		var outPort = '25';
		var outAuth = '0';
		var signMe = this._signMe.checked ? '1' : '0';
		if (this._incServer != null) {
			incServer = this._incServer.value;
			incPort = this._incPort.value;
			incProtocol = this._incProtocol.value;
			outServer = this._outServer.value;
			outPort = this._outPort.value;
			outAuth = this._smtpAuth.checked ? '1' : '0';
		}
		this.HideError();
		this.AdvancedLogin = (this._mode == 'advanced') ? '1' : '0';
		var xml = '<param name="action" value="login"/>';
		xml += '<param name="request" value=""/>';
		xml += '<param name="email">' + GetCData(this._email.value) + '</param>';
		xml += '<param name="mail_inc_login">' + GetCData(this._login.value) + '</param>';
		xml += '<param name="mail_inc_pass">' + GetCData(this._password.value) + '</param>';
		xml += '<param name="mail_inc_host">' + GetCData(incServer) + '</param>';
		xml += '<param name="mail_inc_port" value="' + incPort + '"/>';
		xml += '<param name="mail_protocol" value="' + incProtocol + '"/>';
		xml += '<param name="mail_out_host">' + GetCData(outServer) + '</param>';
		xml += '<param name="mail_out_port" value="' + outPort + '"/>';
		xml += '<param name="mail_out_auth" value="' + outAuth + '"/>';
		xml += '<param name="sign_me" value="' + signMe + '"/>';
		xml += '<param name="advanced_login" value="' + this.AdvancedLogin + '"/>';
		this.Xml = '<?xml version="1.0" encoding="utf-8"?><webmail>' + xml + '</webmail>';
		if (Browser.IE) {
			this._email.blur();
			this._login.blur();
			this._password.blur();
			if (this._incServer != null) {
				this._incServer.blur();
				this._incPort.blur();
				this._outServer.blur();
				this._outPort.blur();
			}
		}
		this.onSubmit.call(this);
	},
	
	ChangeMode: function ()
	{
		if (this._incServer == null) return;
		this.Tip.Hide('');
		if (this._mode == 'standard') {
			this._mode = 'advanced';
			this._incProtocol.className = 'wm_advanced_input';
			this._loginModeSwitcher.innerHTML = Lang.StandardLogin;
		}
		else {
			this._mode = 'standard';
			this._incProtocol.className = 'wm_hide';
			this._loginModeSwitcher.innerHTML = Lang.AdvancedLogin;
		}
		this.MakeView();
	},
	
	SlideIt: function (objname)
	{
		if (moving[objname]) return;
		moving[objname] = true;
		dir[objname] = (dir[objname] == 'down') ? 'up' : 'down';
		obj[objname] = document.getElementById(objname);
		endHeight[objname] = parseInt(obj[objname].style.height);
		startTime[objname] = (new Date()).getTime();
		if (dir[objname] == 'down'){
			obj[objname].style.height = '1px';
		}
		obj[objname].style.display = 'block';
		if (dir[objname] == 'down') {
			this.ChangeMode();
		}
		timerID[objname] = setInterval('LoginScreen.SlideTick(\'' + objname + '\')',timerlen);
	},
	
	SlideTick: function (objname){
		var elapsed = (new Date()).getTime() - startTime[objname];
		if (elapsed > slideAniLen) {
			clearInterval(timerID[objname]);
			if (dir[objname] == 'up') {
				obj[objname].style.display = 'none';
				this.ChangeMode();
			}
			obj[objname].style.height = endHeight[objname] + 'px';
			delete(moving[objname]);
			delete(timerID[objname]);
			delete(startTime[objname]);
			delete(endHeight[objname]);
			delete(obj[objname]);
		} else {
			var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
			if (dir[objname] == 'up') {
				d = endHeight[objname] - d;
			} else {
				d = endHeight[objname] * Math.sin((d/endHeight[objname])*Math.PI/2)
			}
			obj[objname].style.height = d + 'px';
		}
	},
	
	AjaxInit: function (SubmitHandler)
	{
		var obj = this;
		if (AllowAdvancedLogin) {
			this._loginModeSwitcher = document.getElementById('login_mode_switcher');
			this._loginModeSwitcher.href = '#';
			dir['advanced_fields'] = (AdvancedLogin == 0) ? 'up' : 'down';
			this._loginModeSwitcher.onclick = function() {
				obj.SlideIt('advanced_fields');
				return false;
			}
		}
		this.onSubmit = SubmitHandler;
		this._isAjax = true;
		this.LoginForm.onsubmit = function () {
			return false;
		}
		var submit = document.getElementById('submit');
		submit.onclick = function() {
			obj.SendLoginForm();
		}
	},
	
	ShowError: function (errorDesc)
	{
		this._loginError.className = 'wm_login_error';
		this._loginError.innerHTML = errorDesc;
	},

	HideError: function ()
	{
		this._loginError.className = 'wm_hide';
	},
	
	Show: function ()
	{
		this._container.className = '';
	},
	
	Hide: function ()
	{
		this._container.className = 'wm_hide';
	}
};

function CTip()
{
	this._container = CreateChild(document.body, 'table');
	this._container.className = 'wm_hide';
	var tr = this._container.insertRow(0);
	var td = tr.insertCell(0);
	td.className = 'wm_tip_arrow';
	this._message = tr.insertCell(1);
	this._message.className = 'wm_tip_info';
	this._base = '';
}

CTip.prototype = {
	SetMessageText: function(text)
	{
		this._message.innerHTML = text;
	},
	
	SetCoord: function(element)
	{
		var bounds = GetBounds(element);
		this._container.style.top = (bounds.Top + bounds.Height/2 - 16) + 'px';
		this._container.style.left = (bounds.Left + bounds.Width - 5) + 'px';
	},
	
	Show: function(text, element, base)
	{
		this.SetMessageText(text);
		this.SetCoord(element);
		this._base = base;
		this._container.className = 'wm_tip';
	},
	
	Hide: function(base)
	{
		if (this._base == base || base == '')
			this._container.className = 'wm_hide';
	}
};