var datalayerJS = {
	RFV: function() {
		var rfv = '';

		try {			
			rfv = datalayerJS.getCookie('RFV');
			if (rfv != null && rfv != '') return rfv;
			
			var ga = datalayerJS.getCookie('_ga');
			if (ga == null || ga == '') return '';

			rfv = datalayerJS.getHttp('https://apis.joins.com/DataLayer/RFV?ga=' + encodeURIComponent(ga));
		} catch (e) {
			console.log(e);
		}

		return rfv;
	},
	getCookie: function (key) {
		var cookie = '';

		try {
			cookie = document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + encodeURIComponent(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1") || null;

			if (cookie) {
				try {
					cookie = decodeURIComponent(cookie);
				} catch (e) {
					cookie = decodeURIComponent(unescape(cookie));
				}
			}	
		} catch (e) {
			console.log(e);
		}

		return cookie;
	},
	setCookie: function (key, value, expires) {
		try {
			document.cookie = encodeURIComponent(key) + '=' + encodeURIComponent(value) + 
				'; expires=Fri, 31 Dec 9999 23:59:59 GMT' + 
				'; max-age=' + (60 * 60 * 24 * expires) + 
				'; domain=joins.com' + 
				'; path=/';
			return true;		
		} catch (e) {
			console.log(e);
			return false;
		}
	},
	getHttp: function(url) {
		var text = '';
		
		try {
			var xhr = new XMLHttpRequest();
			xhr.open('GET', url, true);
			xhr.send();
			xhr.onload = function() {
				if (xhr.status == 200) {
					text = xhr.responseText.replace(/"/gi, '').trim();
					if (text == null || text == '' || text == '0') return '';

					datalayerJS.setCookie('RFV', text, 1);
				}
			}			
		} catch (e) {
			console.log(e);
		}

		return text;
	}
};