( function ( root, factory ) {
    if ( typeof define === 'function' && define.amd ) {
        define( factory );
    } else if ( typeof exports === 'object' ) {
        module.exports = factory( require, exports, module );
    } else {
        root.ouibounce = factory();
    }
}( this, function ( require, exports, module ) {

    return function ouibounce( el, config ) {
        var config = config || { },
            aggressive = config.aggressive || false,
            sensitivity = setDefault( config.sensitivity, 20 ),
            timer = setDefault( config.timer, 1000 ),
            delay = setDefault( config.delay, 0 ),
            callback = config.callback || function () {},
            cookieExpire = setDefaultCookieExpire( config.cookieExpire ) || '',
            cookieDomain = config.cookieDomain ? ';domain=' + config.cookieDomain : '',
            cookieName = config.cookieName ? config.cookieName : 'viewedOuibounceModal',
            sitewide = config.sitewide === true ? ';path=/' : '',
            _delayTimer = null,
            _html = document.documentElement;

        function setDefault( _property, _default ) {
            return typeof _property === 'undefined' ? _default : _property;
        }

        function setDefaultCookieExpire( days ) {
            // transform days to milliseconds
            var ms = days * 24 * 60 * 60 * 1000;

            var date = new Date();
            date.setTime( date.getTime() + ms );

            return "; expires=" + date.toUTCString();
        }

        setTimeout( attachOuiBounce, timer );
        function attachOuiBounce() {
            _html.addEventListener( 'mouseleave', handleMouseleave );
            _html.addEventListener( 'mouseenter', handleMouseenter );
            _html.addEventListener( 'keydown', handleKeydown );
        }

        function handleMouseleave( e ) {
            if ( e.clientY > sensitivity || ( checkCookieValue( cookieName, 'true' ) && !aggressive ) )
                return;

            _delayTimer = setTimeout( _fireAndCallback, delay );
        }

        function handleMouseenter( e ) {
            if ( _delayTimer ) {
                clearTimeout( _delayTimer );
                _delayTimer = null;
            }
        }

        var disableKeydown = false;
        function handleKeydown( e ) {
            if ( disableKeydown || checkCookieValue( cookieName, 'true' ) && !aggressive )
                return;
            else if ( !e.metaKey || e.keyCode !== 76 )
                return;

            disableKeydown = true;
            _delayTimer = setTimeout( _fireAndCallback, delay );
        }

        function checkCookieValue( cookieName, value ) {
            return parseCookies()[cookieName] === value;
        }

        function parseCookies() {
            // cookies are separated by '; '
            var cookies = document.cookie.split( '; ' );

            var ret = { };
            for ( var i = cookies.length - 1; i >= 0; i-- ) {
                var el = cookies[i].split( '=' );
                ret[el[0]] = el[1];
            }
            return ret;
        }

        function _fireAndCallback() {
            fire();
            callback();
        }

        function fire() {
            // You can use ouibounce without passing an element
            // https://github.com/carlsednaoui/ouibounce/issues/30
            if ( el )
                el.style.display = 'block';
            if ( typeof ( CMregisterPopupFlyinWatchers ) === "function" ) {
                CMregisterPopupFlyinWatchers();
            }
            callback();
            disable();
        }

        function disable( options ) {
            var options = options || { };

            // you can pass a specific cookie expiration when using the OuiBounce API
            // ex: _ouiBounce.disable({ cookieExpire: 5 });
            if ( typeof options.cookieExpire !== 'undefined' ) {
                cookieExpire = setDefaultCookieExpire( options.cookieExpire );
            }

            // you can pass use sitewide cookies too
            // ex: _ouiBounce.disable({ cookieExpire: 5, sitewide: true });
            if ( options.sitewide === true ) {
                sitewide = ';path=/';
            }

            // you can pass a domain string when the cookie should be read subdomain-wise
            // ex: _ouiBounce.disable({ cookieDomain: '.example.com' });
            if ( typeof options.cookieDomain !== 'undefined' ) {
                cookieDomain = ';domain=' + options.cookieDomain;
            }

            if ( typeof options.cookieName !== 'undefined' ) {
                cookieName = options.cookieName;
            }

            document.cookie = cookieName + '=true' + cookieExpire + cookieDomain + sitewide;

            // remove listeners
            _html.removeEventListener( 'mouseleave', handleMouseleave );
            _html.removeEventListener( 'mouseenter', handleMouseenter );
            _html.removeEventListener( 'keydown', handleKeydown );
        }
        function close() {
            //if (el) el.style.display = 'none';
            //jQuery( el ).hide();
            jQuery( el ).remove();
            disable();
            if ( typeof ( CMpopupClosed ) == "function" ) {
                CMpopupClosed();
            }
        }
        return {
            fire: fire,
            disable: disable,
            close: close
        };
    }
    ;

} ) );