/*
name: feedback form javascript template file

version: 0.05 / 2014-11-04
         + custom fields check for only 1 required char

version: 0.04 / 2007-11-20
         + custom fields

version: 0.03 / 2006-05-08 
         + anti cache parameters
         + encodings (page and mail)
         * bug fixed
version: 0.01 / 2006-03-10
         + initial release
         
copyright (c) 2006 Sliven.NET; all rights reserved

author: Hristo Drumev [www.hdrumev.com]
*/

function writeForm()
{
	// check parameters from client
	if( typeof( _toEmail ) == 'undefined' || 
	    typeof( _successMessage ) == 'undefined' ||
	    typeof( _errorMessage ) == 'undefined' ||
	    typeof( _showFormAgain ) == 'undefined' ||
	    typeof( _captions ) == 'undefined' || _captions.length != 4 ||
	    typeof( _pageEncoding ) == 'undefined' ||
	    typeof( _mailEncoding ) == 'undefined' ||
	    ( typeof( _customFields ) != 'undefined' ) && !_customFields.length )
	{
		var err_msg = 'ERROR\n\nSource: Feedback form generator javascript\n\nYou have a error on your page using this javascript feedback form. Please check your parameters.\n\n';
		
		if( typeof( _toEmail ) == 'undefined' ) err_msg += 'Missing "_toEmail" parameter.\n';
		if( typeof( _successMessage ) == 'undefined' ) err_msg += 'Missing "_successMessage" parameter.\n';
		if( typeof( _errorMessage ) == 'undefined' ) err_msg += 'Missing "_errorMessage" parameter.\n';
		if( typeof( _showFormAgain ) == 'undefined' ) err_msg += 'Missing "_showFormAgain" parameter.\n';
		if( typeof( _captions ) == 'undefined' ) err_msg += 'Missing "_captions" parameter.\n';
		if( typeof( _captions ) != 'undefined' && _captions.length != 4 ) err_msg += 'Parameter "_captions" is array and must have 4 items. See documentation for more info.\n';
		if( typeof( _pageEncoding ) == 'undefined' ) err_msg += 'Missing "_pageEncoding" parameter.\n';
		if( typeof( _mailEncoding ) == 'undefined' ) err_msg += 'Missing "_mailEncoding" parameter.\n';
    if( typeof( _customFields ) != 'undefined' ) err_msg += 'Parameter "_customFields" must be array with captions of fields.\n';
		
		window.alert( err_msg );
		return;
	}

	
	// message
	if( _formResult !== null )
		document.write( '<div class="feedbackformmessage">' + ( ( _formResult ) ? _successMessage : _errorMessage ) + '<\/div>' );
	if( !( _showForm || _showFormAgain ) ) // !a && !b === !( a || b )  ;-)
		return;
	_formCode = _formCode.replace( 'SERVERADDRESS', _serverAddress );
	_formCode = _formCode.replace( 'RECEIVER', _toEmail );
	_formCode = _formCode.replace( 'CAPTIONNAME', _captions[0] );
	_formCode = _formCode.replace( 'CAPTIONEMAIL', _captions[1] );
	_formCode = _formCode.replace( 'CAPTIONTEXT', _captions[2] );
	_formCode = _formCode.replace( 'CAPTIONSUBMIT', _captions[3] );
	_formCode = _formCode.replace( 'PAGEENCODING', _pageEncoding );
	_formCode = _formCode.replace( 'MAILENCODING', _mailEncoding );
	
	_costomFieldsCode = '';
	if( typeof( _customFields ) != 'undefined' )
	{
	  var _customFieldsTitles = '';
	  for( var i = 0; i < _customFields.length; i++ )
	  {
	    _costomFieldsCode += '<div>';
	    _costomFieldsCode += '<label for="_custom' + i + '">' + _customFields[i] + '</label>';
	    _costomFieldsCode += '<input name="_custom' + i + '" id="_custom' + i + '" type="text" />';
	    _costomFieldsCode += '</div>';
	    _customFieldsTitles += ( _customFieldsTitles == '' ? '' : '^' ) + _customFields[i];
	  }
	  _costomFieldsCode += '<div><input name="_customFields" type="hidden" value="' + _customFieldsTitles + '" /></div>'
	}
	_formCode = _formCode.replace( 'CUSTOMFIELDS', _costomFieldsCode );
	
	_successURLCode = '';
	if( typeof( _successURL ) != 'undefined' )
	{
		_successURLCode = '<input name="_successURL" type="hidden" value="' + _successURL + '" />';
	}
	_formCode = _formCode.replace( 'SUCCESSURL', _successURLCode );
		
	if( typeof( _isXHTML ) != 'undefined' && !_isXHTML )
		_formCode = _formCode.replace( ' \/>', '>' );
	
  document.write( _formCode );
}

function emailCheck( emailStr )
{
	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 )
		return false;
	var user = matchArray[1];
	var domain = matchArray[2];
	if( user.match( userPat ) == null )
	    return false;
	var IPArray = domain.match( ipDomainPat )
	if( IPArray != null )
	{
		for( var i = 1; i <= 4; i++ )
			if( IPArray[i] > 255 )
				return false;
		return true
	}
	var domainArray=domain.match(domainPat)
	if( domainArray == null )
		return false;
	var atomPat = new RegExp( atom, "g" );
	var domArr = domain.match( atomPat );
	var len=domArr.length;
	if( domArr[domArr.length - 1].length < 2 || domArr[domArr.length - 1].length > 3 )
		return false
	if ( len < 2 )
		return false;
	return true;
}

function checkForm()
{
	var error = false;
  var name = document.feedbackform._name.value;
	var email = document.feedbackform._email.value;
	var text = document.feedbackform._text.value;
	if( name.length < 2 || !emailCheck( email ) || text.length < 1 || text.length > 1000 )
  	error = true;
	else if( document.feedbackform['_custom' + '0'] )
	{
  	var i = 0;  
  	while( document.feedbackform['_custom' + i] )
  	  if( document.feedbackform['_custom' + ( i++ )].value.length < 1 )
  	  {
  	    error = true;
  	    break;
  	  }
	}	
	if( error )
	{
  	if( typeof( _errorInFileds ) == 'undefined' )
  		window.alert( 'Error in fields. You cannot send the form. Please fix errors' );
  	else
  		window.alert( _errorInFileds );
  	return false;	
	}
	return true;
}

// source of the feedback form
var _formCode =
	'<form id="feedbackform" name="feedbackform" method="get" action="SERVERADDRESS?tsf=' + ( new Date ).getTime() + parseInt( Math.random()*9999 ) + '" onsubmit="return checkForm()">' +
	'<div><input name="_receiver" type="hidden" value="RECEIVER" /></div>' +
	'<div><label for="_name">CAPTIONNAME:</label><input name="_name" id="_name" type="text" /></div>' +
	'<div><label for="_email">CAPTIONEMAIL:</label><input name="_email" id="_email" type="text" /></div>' +
	'CUSTOMFIELDS' +
	'<div><label for="_text">CAPTIONTEXT:</label><textarea name="_text" id="_text"></textarea></div>' +
	'<div><input class="feedbacksubmit" type="submit" value="CAPTIONSUBMIT" /></div>' +
	'<div><input name="_pageEncoding" type="hidden" value="PAGEENCODING" /></div>' +
	'<div><input name="_mailEncoding" type="hidden" value="MAILENCODING" /></div>' +
	'SUCCESSURL' + 
	'<div style="clear: both;"></div>' +
	'</form>';

/*
 * server side generated variables
 */

// to show feedback form
var _showForm      = 1;
// result of last operation; 1 - success, 0 - failure, null - no result
var _formResult    = null;
// server address
var _serverAddress = 'https://new.sliven.net/sys/feedbackform.js?ts=1627517310';

writeForm();