(function($) {
    var chats;

    //for IE <9
    if (!Object.keys) {
        Object.keys = function(obj) {
            var keys = [];

            for (var i in obj) {
                if (obj.hasOwnProperty(i)) {
                    keys.push(i);
                }
            }

            return keys;
        };
    }

    $( document ).ready(function() {
        if(!chats){
            chats = new Chats();
            chats.init();
        }
    });

    function Chats(){
        var thisChat = this;
        var thisChatListener;

        var settings = {
            'tagPrefix'              : chats_parameters.tag_prefix,
            'chatHash'               : '',
            'site_url'               : chats_parameters.site_url,
            'sound_path'             : chats_parameters.sound_path,
            'assets_path'            : chats_parameters.assets_path,
            'show_copyright_time'    : chats_parameters.show_copyright_time,
            'show_copyright'         : chats_parameters.show_copyright,
            'popup_automatically'    : chats_parameters.popup_automatically,
            'popup_automatically_delay_sec'    : chats_parameters.popup_automatically_delay_sec,
            'ask_name'               :chats_parameters.ask_name,
            'ask_email'               :chats_parameters.ask_email,

            'show_status_indicator': chats_parameters.show_status_indicator,
            'status_indicator': chats_parameters.status_indicator,

            'translation' : {
                'title'                 : chats_parameters.text.panel_title,
                'enter_message'         : chats_parameters.text.enter_text_placeholder,
                'finish'                : chats_parameters.text.btn_finish_text,
                'user_name'             : chats_parameters.text.user_signature,
                'powered_by'            : 'Powered by',
                'admin_name'            : chats_parameters.text.admin_signature,
                'start_message'         : chats_parameters.text.hello_message,
                'offline_message'       : chats_parameters.text.offline_message,
                'email_label'           : chats_parameters.text.email_label,
                'name_label'            : chats_parameters.text.name_label,
                'message_label'         : chats_parameters.text.message_label,
                'send_email'            : chats_parameters.text.send_email,
                'offline_thank_message' : chats_parameters.text.offline_thank_message,
                'label_ask_name'        : chats_parameters.text.label_ask_name,
                'label_ask_email'       : chats_parameters.text.label_ask_email
            },
            'color' : {
                'panel_background'          : chats_parameters.color.panel_background,
                'panel_border_color'        : chats_parameters.color.panel_border_color,
                'body_background'           : chats_parameters.color.body_background,
                'btn_finish_background'     : chats_parameters.color.btn_finish_background,
                'btn_finish_color'          : chats_parameters.color.btn_finish_color,
                'btn_finish_border_color'   : chats_parameters.color.btn_finish_border_color,
                'btn_expand_background'     : chats_parameters.color.btn_expand_background,
                'admin_signature_color'     : chats_parameters.color.admin_signature_color,
                'admin_text_color'          : chats_parameters.color.admin_text_color,
                'user_signature_color'      : chats_parameters.color.user_signature_color,
                'user_text_color'           : chats_parameters.color.user_text_color,
                'time_color'                : chats_parameters.color.time_color,
                'message_border_color'      : chats_parameters.color.message_border_color,
                'write_panel_background'    : chats_parameters.color.write_panel_background,
                'write_area_background'     : chats_parameters.color.write_area_background,
                'write_area_color'          : chats_parameters.color.write_area_color
            },
            'template' : {
                'width'     : chats_parameters.template.width,
                'position'  : chats_parameters.template.position,
                'status'    : chats_parameters.template.status,
                'show_avatars'  : chats_parameters.template.show_avatars,
                'admin_avatar'  : chats_parameters.template.admin_avatar,
                'user_avatar'   : chats_parameters.template.user_avatar
            },
            'offline_form_fields': chats_parameters.offline_form_fields,
            'messagesHtml'      : '', //html of messages
            'messages'          : {}, //loaded array of messages
            'autoFinishTimeout' : 900, //finish chat after 15 min without any action
            'startUpOpen'       : 0,    //open chat after loading
            'ajaxAction'        : 'jsChatsProcess'
        };

        var blocks = {};

        this.setup = function(vars){
            var newChat = 0;

            //check hash and cookie or prepare new
            var hash                = $.cookie(chats_parameters.cookie_prefix);
            settings.startUpOpen    = $.cookie(chats_parameters.cookie_prefix+'_status');
            if( !hash || hash == '' ){
                hash = this.randHash();
            }
            settings.chatHash = hash;
            $.cookie(chats_parameters.cookie_prefix, hash, {path:'/'});

            //only if chat online
            if(settings.template.status == 1) {
                //seems chat should be continued
                //if(settings.startUpOpen == 1){
                //try load messages for hash
                this.loadMessages('user_last', 50);
                //}

                //prepare messages
                this.prepareMessages(1);
            }

            if(settings.popup_automatically == 1 && settings.popup_automatically_delay_sec > 0 && null == $.cookie(chats_parameters.cookie_prefix+'_stop_auto_open')) {
                window[chats_parameters.cookie_prefix+'_timer_autoopen'] = setTimeout(function(th) {th.animateChat('open');}, 1000*settings.popup_automatically_delay_sec, this);
            }

            var visitortime = new Date();
            var visitortimezone = -visitortime.getTimezoneOffset()/60;
            $.cookie('chat_auto_timezone', visitortimezone, {path:'/'});
        };

        this.postSetup = function(vars){
            //blocks
            blocks.chatBlock    = $('.'+settings.tagPrefix+'_container');
            blocks.chatBody     = $('.'+settings.tagPrefix+'_body');
            blocks.chatTitle    = $('.'+settings.tagPrefix+'_title');
            blocks.chatWrite    = $('.'+settings.tagPrefix+'_write');
            blocks.textarea     = blocks.chatBlock.find('textarea');
            blocks.enterBut     = blocks.chatBlock.find('.'+settings.tagPrefix+'_btn_enter');
            blocks.finisBut     = blocks.chatBlock.find('.'+settings.tagPrefix+'_btn_finish');
            blocks.chatBlockBtn = blocks.chatTitle.find('.'+settings.tagPrefix+'_btn');

            blocks.sendEmailBut = blocks.chatBlock.find('.'+settings.tagPrefix+'_btn_send_email');
            blocks.userName     = blocks.chatBlock.find('#'+settings.tagPrefix+'_user_name');
            blocks.userEmail    = blocks.chatBlock.find('#'+settings.tagPrefix+'_user_email');
            blocks.userMessage  = blocks.chatBlock.find('#'+settings.tagPrefix+'_user_message');

            blocks.presented    = $('.'+settings.tagPrefix+'_presented');
            blocks.user_name    = blocks.presented.find('[type=text]');
            blocks.user_email   = blocks.presented.find('[type=email]');

            blocks.offline_form_fields = $('.'+settings.tagPrefix+'_offline_form_fields');


            //only if chat online
            if(settings.template.status == 1) {
                //listen new messages
                thisChat.reloadMessages();

                //open chat
                if (settings.startUpOpen == 1) {
                    this.animateChat('open');
                }
            }

            //events
            if(settings.template.status != 3) {
                blocks.textarea.on('keydown', function (e) {
                    if (e.which == 13) { //enter
                        thisChat.sendMessage();
                        return false;
                    }
                });
            }
            blocks.enterBut.on('click',function(){
                thisChat.sendMessage();
            });
            blocks.finisBut.on('click',function(){
                thisChat.finish();
            });
            blocks.sendEmailBut.on('click',function(){
                thisChat.sendEmail();
            });
            blocks.chatBlockBtn.on('click',function(){
                if( blocks.chatBlock.hasClass('active') ){
                    thisChat.animateChat('close');
                }else{
                    thisChat.animateChat('open');
                }
            });
            blocks.chatTitle.on('click',function(){
                if( blocks.chatBlock.hasClass('active') ){
                    thisChat.animateChat('close');
                }else{
                    thisChat.animateChat('open');
                }
            });
        };

        this.animateChat = function(mode){
            if(mode == 'close'){
                blocks.chatBlock.animate({
                    height: blocks.chatTitle.outerHeight()
                }, 500, function() {
                    blocks.chatBlock.removeClass('active');
                    //blocks.chatBlockBtn.html('+');

                    settings.startUpOpen = 0;

                    $.cookie(chats_parameters.cookie_prefix+'_status', settings.startUpOpen, {path:'/'});
                    $.cookie(chats_parameters.cookie_prefix+'_stop_auto_open', 1, {path:'/'});
                    if (window[chats_parameters.cookie_prefix+'_timer_autoopen']) {
                        clearTimeout(window[chats_parameters.cookie_prefix+'_timer_autoopen']);
                    }
                });
            }

            if(mode == 'open'){
                    //remove any additional class
                blocks.chatBlock.removeClass('finish');
                var w = (window.innerWidth > 0) ? window.innerWidth : screen.width;
                var h = (window.innerHeight> 0) ? window.innerHeight : screen.height;


                var w_height = blocks.chatTitle.outerHeight() + blocks.chatBody.outerHeight() + blocks.chatWrite.outerHeight();

                if (w_height > h) {
                    $(blocks.chatBody).height(h - blocks.chatTitle.outerHeight() - blocks.chatWrite.outerHeight() -20);
                    w_height = blocks.chatTitle.outerHeight() + blocks.chatBody.outerHeight() + blocks.chatWrite.outerHeight();
                }

                blocks.chatBlock.animate({
                    height: (w_height)
                }, 500, function() {
                    blocks.chatBlock.addClass('active');
                    //blocks.chatBlockBtn.html('&ndash;');

                    settings.startUpOpen = 1;
                    $.cookie(chats_parameters.cookie_prefix+'_status', settings.startUpOpen, {path:'/'});
                });
            }
        };

        this.loadMessages = function(queryMode, countMessage, successCallback, errorCallback){
            $.ajax({
                type: "POST",
                url: chats_parameters.request_url,
                data: {
                    'mode'          : 'read',
                    'action'        : settings.ajaxAction,
                    'queryMode'     : queryMode,
                    'countMessage'  : countMessage
                },
                dataType: "json",
                //contentType:"application/json; charset=utf-8",
                success: function(data){
                    if(data && data.messages.length > 0){
                        $.each(data.messages, function(ind,val){
                            settings.messages[val.message_id] = val;
                        });
                        thisChat.prepareMessages();
                    }
                    if(successCallback){
                        successCallback();
                    }
                },
                error: function(){
                    if(errorCallback){
                        errorCallback();
                    }
                }
            });
        };

        this.sendMessage = function(){
            var text =  $.trim(blocks.textarea.val());
            var user_name = $.trim(blocks.user_name.val());
            var user_email = $.trim(blocks.user_email.val());

            if (settings.ask_name == 'require' && user_name == '') {
                blocks.user_name.focus();
                blocks.user_name.addClass('chats_input_error');
                return;
            } else {
                blocks.user_name.removeClass('chats_input_error');
            }

            if (settings.ask_email == 'require' && user_email == '') {
                blocks.user_email.focus();
                blocks.user_email.addClass('chats_input_error');
                return;
            } else {
                blocks.user_email.removeClass('chats_input_error');
            }

            var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

            if (user_email != '' && !re.test(user_email)) {
                blocks.user_email.focus();
                blocks.user_email.addClass('chats_input_error');
                return;
            } else {
                blocks.user_email.removeClass('chats_input_error');
            }

            if (text == '') {
                blocks.textarea.focus();
                return;
            }


            blocks.presented.hide();
            blocks.chatBody.show();

            blocks.textarea.val('');

            if( text != '' ){
                //var d = new Date();
                //var randID = thisChat.randHash();
                //settings.messages[''] = {name: settings.translation.user_name, text:text, time: (d.getHours()+':'+d.getMinutes()), message_id:randID};
                //thisChat.prepareMessages();

                blocks.chatBlock.addClass('loading');

                $.ajax({
                    type: "POST",
                    url: chats_parameters.request_url,
                    data: {
                        'mode'          : 'add',
                        'action'        : settings.ajaxAction,
                        'message'       : text,
                        'presented_user_name'     : user_name,
                        'presented_user_email'    : user_email,
                        'message_page'  : window.location.href,
                        'user_timezone' : -new Date().getTimezoneOffset()/60
                    },
                    dataType: "json",
                    cache: false,
                    success: function(data){
                        if(data && data.result == 1){
                            thisChat.loadMessages('user_last',1,function(){
                                blocks.chatBlock.removeClass('loading');

                                //kill tmp message
                                //blocks.chatBody.find('#message_'+randID).remove();

                                //play sound
                                thisChat.playSound('out');
                            });
                        }
                    }
                });
            }
        };

        this.prepareMessages = function(addDefault){
            //add default message
            if(addDefault == 1){
                this.messageTemplate(settings.translation.admin_name, settings.translation.start_message, '', '0','1');
            }

            if( Object.keys(settings.messages).length > 0 ){

                blocks.presented.hide();
                blocks.chatBody.show();

                settings.messagesHtml = '';
                var newMessages = 0;
                var newAnswer = 0;

                $.each(settings.messages, function(ind,val){
                    if( blocks.chatBody.find('#message_'+val.message_id).length == 0){
                        thisChat.messageTemplate(val.name, val.text, val.time, val.message_id, val.type);
                        newMessages = 1;

                        //check answer from admin
                        if(val.type == 1){
                            newAnswer = 1;
                        }
                    }
                });

                if(newMessages == 1){
                    blocks.chatBody.append( settings.messagesHtml );
                    blocks.chatBody.scrollTop(blocks.chatBody.prop("scrollHeight"));
                }

                if(newAnswer == 1){
                    //play sound
                    thisChat.playSound('in');
                }
            }
        };

        this.randHash = function() {
            var result          = '';
            var words           = '0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM';
            var max_position    = words.length - 1;
            var position        = 0;
            for( i = 0; i < 10; ++i ) {
                position = Math.floor ( Math.random() * max_position );
                result = result + words.substring(position, position + 1);
            }
            return result;
        };

        this.playSound = function(sound){
            var path    = settings.sound_path;
            var sound   = ( !sound ? 'in' : sound);
            sound = path+'/'+sound;

            $(document.body).append("<div id='"+settings.tagPrefix+"_play_sound'><embed src='"+sound+".mp3' hidden='true' autostart='true' loop='false' class='playSound'>" + "<audio autoplay='autoplay' style='display:none;' controls='controls'><source src='"+sound+".mp3' /><source src='"+sound+".wav' /></audio></div>");
            setTimeout(function(){
                $('#'+settings.tagPrefix+'_play_sound').remove();
            },1000);
        };

        this.escapeHtml = function(text){
            var map = {
                '&': '&amp;',
                '<': '&lt;',
                '>': '&gt;',
                '"': '&quot;',
                "'": '&#039;'
            };
            text = text.replace(/[&<>"']/g, function(m) { return map[m]; });
            text = text.replace('&lt;br /&gt;','<br />');

            return text;
        };
		

        this.template = function(){
			power_by = '<div class="'+settings.tagPrefix+'_bottom_write"><a target="_blank" href="https://wordpress.org/plugins/chats/">'+settings.translation.powered_by+'</a> <a target="_blank" href="http://wp-chat.com"><b>wp-chat.com</b></a></div>' ;
			if (settings.show_copyright_time && settings.show_copyright && settings.show_copyright == 0) {
				var unixtime = Math.round(+settings.show_copyright_time/1000);
				var unixtime_now = Math.round(+new Date()/1000);
				if (unixtime_now >= unixtime) {
					power_by = '';
				} 
			}

            var w = (window.innerWidth > 0) ? window.innerWidth : screen.width;
            var h = (window.innerHeight> 0) ? window.innerHeight : screen.height;

            return '' +
                '<div id="'+settings.chatHash+'" class="'+settings.tagPrefix+'_container">' +
                    '<div class="'+settings.tagPrefix+'_title">' +
                        '<span class="'+settings.tagPrefix+'_text">'+settings.translation.title+'</span>' +
                        '<span class="'+settings.tagPrefix+'_btn">&nbsp;</span>' +
                        '<span class="'+settings.tagPrefix+'_btn_finish chats_btn_big_finish">'+settings.translation.finish+'</span>' +
                        '<span class="'+settings.tagPrefix+'_btn_finish chats_btn_sml_finish" style="display: none;">X</span>' +
                    '</div>' +
                    '<div class="'+settings.tagPrefix+'_presented">' +
                        '<label class="'+settings.tagPrefix+'_presented_name">'+settings.translation.label_ask_name+' <input type=text><br></label>' +
                        '<label class="'+settings.tagPrefix+'_presented_email">'+settings.translation.label_ask_email+' <input type="email" id="user_email"></label>'+
                    '</div>' +
                    '<div class="'+settings.tagPrefix+'_body">'+settings.messagesHtml+'</div>' +
                    '<div class="'+settings.tagPrefix+'_write">' +
                        '<div class="'+settings.tagPrefix+'_top_write">' +
                            '<span class="'+settings.tagPrefix+'_preloader">&nbsp;</span>' +
                        '</div>' +
                        '<div class="'+settings.tagPrefix+'_middle_write">' +
                            '<textarea placeholder="'+settings.translation.enter_message+'"></textarea>' +
                            '<span class="'+settings.tagPrefix+'_btn_enter">&nbsp;</span>' +
                        '</div>' +
                        '<div>' +

                        power_by + 
                    '</div>' +
                '</div>' +
                this.template_style() +
            '';
        };

        this.template_offline = function(){
			power_by = '<div class="'+settings.tagPrefix+'_write">' +
                        '<div class="'+settings.tagPrefix+'_bottom_write"><a target="_blank" href="http://wp-chat.com">'+settings.translation.powered_by+' <b>wp-chat.com</b></a></div>' +
                    '</div>';
			if (settings.show_copyright_time && settings.show_copyright && settings.show_copyright == 0) {
				var unixtime = Math.round(+settings.show_copyright_time/1000);
				var unixtime_now = Math.round(+new Date()/1000);
				if (unixtime_now >= unixtime) {
					power_by = '';
				} 
			}
            var t = '' +
                '<div id="'+settings.chatHash+'" class="'+settings.tagPrefix+'_container offline_status">' +
                    '<div class="'+settings.tagPrefix+'_title">' +
                        '<span class="'+settings.tagPrefix+'_text">'+settings.translation.title+'</span>' +
                        '<span class="'+settings.tagPrefix+'_btn">&nbsp;</span>' +
                    '</div>' +
                    '<div class="'+settings.tagPrefix+'_body">' +
                        '<div class="'+settings.tagPrefix+'_body_line hi">'+settings.translation.offline_message+'</div>' +
                        '<div class="'+settings.tagPrefix+'_body_line thanks">'+settings.translation.offline_thank_message+'</div>' +
                        '<div class="'+settings.tagPrefix+'_body_line">' +
                            '<div class="'+settings.tagPrefix+'_body_line_label">'+settings.translation.name_label+'</div>' +
                            '<div class="'+settings.tagPrefix+'_body_line_input"><input type="text" id="'+settings.tagPrefix+'_user_name" /></div>' +
                        '</div>' +
                        '<div class="'+settings.tagPrefix+'_body_line">' +
                            '<div class="'+settings.tagPrefix+'_body_line_label">'+settings.translation.email_label+'</div>' +
                            '<div class="'+settings.tagPrefix+'_body_line_input"><input type="email" id="'+settings.tagPrefix+'_user_email" /></div>' +
                        '</div>';

                if (settings.hasOwnProperty('offline_form_fields')) {
                    for(var i in settings.offline_form_fields) {
                        if (settings.offline_form_fields.hasOwnProperty(i)) {
                            t += '<div class="' + settings.tagPrefix + '_body_line">' +
                                '<div class="' + settings.tagPrefix + '_body_line_label">' + settings.offline_form_fields[i] + '</div>' +
                                '<div class="' + settings.tagPrefix + '_body_line_input"><input type="text" class="' + settings.tagPrefix + '_offline_form_fields"></div>' +
                            '</div>';
                        }
                    }
                }



                t +=    '<div class="'+settings.tagPrefix+'_body_line">' +
                            '<div class="'+settings.tagPrefix+'_body_line_label">'+settings.translation.message_label+'</div>' +
                            '<div class="'+settings.tagPrefix+'_body_line_input"><textarea id="'+settings.tagPrefix+'_user_message"></textarea></div>' +
                        '</div>' +
                        '<div class="'+settings.tagPrefix+'_body_line center">' +
                            '<span class="'+settings.tagPrefix+'_btn_send_email">'+settings.translation.send_email+'</span>' +
                        '</div>' +
                    '</div>' +
                     power_by +
                '</div>' +
                this.template_style()+
                '';
            return t;
        };

        var w = window.innerWidth;

        if (w > 340) {
            pos_indent = 40;
        } else {
            pos_indent = w - 285;
            if (pos_indent < 0 ) {
                pos_indent = 0;
            }
        }

        this.template_style = function(){
            var style = '' +
                '<style>' +
                    ((settings.show_status_indicator != 1) ? '' : '.'+settings.tagPrefix+'_title::before {content: url("'+settings.assets_path+'/'+settings.status_indicator+'.png");margin-right: 5px;top: 1px;float: left;}') +
                    '.'+settings.tagPrefix+'_container{border-color:'+settings.color.panel_border_color+';width:'+settings.template.width+'px;'+settings.template.position+':'+pos_indent+'px;}' +

                    '.'+settings.tagPrefix+'_title{background:'+settings.color.panel_background+';width:'+(settings.template.width-20)+'px;}' +
                    '.'+settings.tagPrefix+'_body{background:'+settings.color.body_background+';width:'+(settings.template.width-20)+'px;}' +
                    '.'+settings.tagPrefix+'_btn_finish{background:'+settings.color.btn_finish_background+';color:'+settings.color.btn_finish_color+';border-color:'+settings.color.btn_finish_border_color+';}' +
                    '.'+settings.tagPrefix+'_title .'+settings.tagPrefix+'_btn{background-color:'+settings.color.btn_expand_background+';}' +
                    '.'+settings.tagPrefix+'_message.message_type_1 .'+settings.tagPrefix+'_name{color:'+settings.color.admin_signature_color+';}' +
                    '.'+settings.tagPrefix+'_message.message_type_1 .'+settings.tagPrefix+'_text{color:'+settings.color.admin_text_color+';width:'+(settings.template.width-80)+'px;}' +
                    '.'+settings.tagPrefix+'_message.message_type_0 .'+settings.tagPrefix+'_name{color:'+settings.color.user_signature_color+';}' +
                    '.'+settings.tagPrefix+'_message.message_type_0 .'+settings.tagPrefix+'_text{color:'+settings.color.user_text_color+';width:'+(settings.template.width-80)+'px;}' +
                    '.'+settings.tagPrefix+'_message .'+settings.tagPrefix+'_time{color:'+settings.color.time_color+';}' +
                    '.'+settings.tagPrefix+'_message{border-color:'+settings.color.message_border_color+';}' +
                    '.'+settings.tagPrefix+'_top_write, .'+settings.tagPrefix+'_bottom_write{background:'+settings.color.write_panel_background+';border-color:'+settings.color.write_panel_background+';display:block !important;}' +
                    //'.'+settings.tagPrefix+'_middle_write textarea{background:'+settings.color.write_area_background+';color:'+settings.color.write_area_color+';width:'+(settings.template.width-10)+'px;}' +
                    '.'+settings.tagPrefix+'_middle_write textarea{background:'+settings.color.write_area_background+';color:'+settings.color.write_area_color+';width:100%; height: 100%;}' +
                    '.'+settings.tagPrefix+'_offline_form_fields {background:'+settings.color.write_area_background+';color:'+settings.color.write_area_color+';width:'+(settings.template.width-10)+'px;}' +

                    '#'+settings.tagPrefix+'_user_name, #'+settings.tagPrefix+'_user_email, #'+settings.tagPrefix+'_user_message{background:'+settings.color.write_area_background+';color:'+settings.color.write_area_color+';width:'+(settings.template.width-20)+'px;}' +
                    '.'+settings.tagPrefix+'_btn_send_email{background:'+settings.color.btn_finish_background+';color:'+settings.color.btn_finish_color+';border-color:'+settings.color.btn_finish_border_color+';}' +
                    '.'+settings.tagPrefix+'_presented{display:none; background:'+settings.color.body_background+';width:'+(settings.template.width)+'px;}' +
                    '.'+settings.tagPrefix+'_presented_name{display:none;}' +
                    '.'+settings.tagPrefix+'_presented_email{display:none;}' +
                    '.'+settings.tagPrefix+'_presented input{font-size: 12px; background:'+settings.color.write_area_background+';color:'+settings.color.write_area_color+';width:'+(settings.template.width-20)+'px;}'
                ;

                if (settings.template.status == 1 && (settings.ask_name != '' || settings.ask_email != '')) {
                    style += '.'+settings.tagPrefix+'_body{display:none;}';
                    style += '.'+settings.tagPrefix+'_presented{display:block;}';
                }

                if (settings.ask_name != '') {
                    style += '.'+settings.tagPrefix+'_presented_name {display:block;}';
                }
                if (settings.ask_email != '') {
                    style += '.'+settings.tagPrefix+'_presented_email {display:block;}';
                }
                style += '</style>';

            return style;
        };

        this.messageTemplate = function(name, text, time, id, type){
            var id      = (!id ? '' : id);
            var type    = (!type ? 0 : type);
            var time = (!time ? '' : time);
            var text = (!text ? '' : text);
            var name = (!name ? settings.translation.user_name : name);
            //avatars
            var avatar = '';
            if(settings.template.show_avatars == 1){
                if(type == 0){
                    avatar = settings.template.user_avatar;
                }
                if(type == 1){
                    avatar = settings.template.admin_avatar;
                }
            }
            settings.messagesHtml += '' +
                '<div id="message_'+id+'" class="'+settings.tagPrefix+'_message message_type_'+type+'">' +
                    (avatar != '' ? '<span class="'+settings.tagPrefix+'_avatar"><img alt="" src="'+avatar+'" /></span>' : '') +
                    '<span class="'+settings.tagPrefix+'_name">'+thisChat.escapeHtml(name)+'</span>' +
                    '<span class="'+settings.tagPrefix+'_time">'+thisChat.escapeHtml(time)+'</span>' +
                    '<span class="'+settings.tagPrefix+'_text">'+text+'</span>' +
                '</div>';
        };

        this.init = function(mode, vars){
            this.setup(vars);

            //online
            if(settings.template.status == 1){
                $(document.body).append(this.template());
            }
            //offline
            if(settings.template.status == 3){
                $(document.body).append(this.template_offline());
            }

            this.postSetup();
        };

        this.finish = function(){
            //remove all messages from chat
            $.each(blocks.chatBody.children(),function(ind,val){
                if( ind > 0){
                    $(val).remove();
                }
            });

            thisChat.animateChat('close');

            //remove all messages from db
            $.ajax({
                type: "POST",
                url: chats_parameters.request_url,
                data: {
                    'mode'          : 'finish',
                    'action'        : settings.ajaxAction,
                    'message_page'  : window.location.href
                },
                dataType: "json",
                cache: false,
                success: function(data){
                    //set new hash
                    settings.chatHash = thisChat.randHash();
                    $.cookie(chats_parameters.cookie_prefix, settings.chatHash);

                    //clear stack of messages
                    settings.messages = {};

                    //set close status for preventing opening after reloading page
                    //settings.startUpOpen = 0;
                    //$.cookie(chats_parameters.cookie_prefix+'_status',1, {path:'/'});
                }
            });

            //close chat
        };

        this.sendEmail = function(){

            var text    =  $.trim(blocks.userMessage.val());
            var name    =  $.trim(blocks.userName.val());
            var email   =  $.trim(blocks.userEmail.val());

            var fields = [];

            for(var i=0; i< blocks.offline_form_fields.length; i++) {
                fields[fields.length] = $.trim($(blocks.offline_form_fields[i]).val());
            }

            if (text == '') {
                blocks.userMessage.addClass('chats_input_error');
            } else {
                blocks.userMessage.removeClass('chats_input_error');
            }

            if (name == '') {
                blocks.userName.addClass('chats_input_error');
            } else {
                blocks.userName.removeClass('chats_input_error');
            }

            var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

            if (!re.test(email)) {
                blocks.userEmail.addClass('chats_input_error');
                email = '';
            } else {
                blocks.userEmail.removeClass('chats_input_error');
            }

            //send email
            if(text != '' && name != '' && email != ''){
                $.ajax({
                    type: "POST",
                    url: chats_parameters.request_url,
                    data: {
                        'mode'          : 'send_email',
                        'action'        : settings.ajaxAction,
                        'message_page'  : window.location.href,
                        'text'          : text,
                        'name'          : name,
                        'email'         : email,
                        'offline_form_fields': fields,
                        'user_timezone' : -new Date().getTimezoneOffset()/60
                    },
                    dataType: "json",
                    cache: false,
                    success: function(data){
                        //set new hash
                        settings.chatHash = thisChat.randHash();
                        $.cookie(chats_parameters.cookie_prefix, settings.chatHash);

                        blocks.chatBlock.addClass('finish');

                        blocks.userMessage.val('');
                        blocks.userName.val('');
                        blocks.userEmail.val('');

                        //close chat
                        setTimeout(function(){
                            thisChat.animateChat('close');
                        }, 3000)
                    }
                });
            }
        };

        this.reloadMessages = function(){
            var pause = (settings.startUpOpen == 1 ? 2000 : 15000);
            thisChatListener = setTimeout(function(){
                thisChat.loadMessages('user_last',10,function(){thisChat.reloadMessages()},function(){thisChat.reloadMessages()});
            },pause);
        }


        /****************************/


        window['wpadm_chat_open'] = function() {
            thisChat.animateChat('open');
        }

        window['wpadm_chat_close'] = function() {
            thisChat.animateChat('close');
        }

        window['wpadm_chat'] = function() {
            if(jQuery('.chats_container.active').length == 0) {
                wpadm_chat_open();
            } else {
                wpadm_chat_close();
            }
            //ifrm.contentWindow.postMessage(["chat_max_min", ''], "*");
        }

        var list = document.getElementsByTagName('a'),
            i =0;
        for(; i< list.length; i++) {
            if (undefined == list[i].href) {
                continue;
            }
            if(list[i].href.indexOf('#chat_open') > 0) {
                list[i].addEventListener("click", function(e) {
                    wpadm_chat_open();
                    return false;
                });
                continue;
            }

            if(list[i].href.indexOf('#chat_close') > 0) {
                list[i].addEventListener("click", function(e) {
                    wpadm_chat_close();
                    return false;
                });
                continue;
            }

            if(list[i].href.indexOf('#chat') > 0) {
                list[i].addEventListener("click", function(e) {
                    wpadm_chat();
                    return false;
                });
            }
        }





    }
})(jQuery);

//cookie
(function ($) {
    jQuery.cookie = function(name, value, options) {
        if (!name) {
            return;
        }
        if (typeof value != 'undefined') { // name and value given, set cookie
            options = options || {};
            if (value === null) {
                value = '';
                options = $.extend({}, options); // clone object since it's unexpected behavior if the expired property were changed
                options.expires = -1;
            }
            var expires = '';
            if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
                var date;
                if (typeof options.expires == 'number') {
                    date = new Date();
                    date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
                } else {
                    date = options.expires;
                }
                expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
            }
            // NOTE Needed to parenthesize options.path and options.domain
            // in the following expressions, otherwise they evaluate to undefined
            // in the packed version for some reason...
            var path = options.path ? '; path=' + (options.path) : '';
            var domain = options.domain ? '; domain=' + (options.domain) : '';
            var secure = options.secure ? '; secure' : '';
            document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
        } else { // only name given, get cookie
            var cookieValue = null;
            if (document.cookie && document.cookie != '') {
                var cookies = document.cookie.split(';');
                for (var i = 0; i < cookies.length; i++) {
                    var cookie = jQuery.trim(cookies[i]);
                    // Does this cookie string begin with the name we want?
                    if (cookie.substring(0, name.length + 1) == (name + '=')) {
                        cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                        break;
                    }
                }
            }
            return cookieValue;
        }
    };
})(jQuery);