Cookie concent feature.

assets/js/cookieconsent.js

@@ -0,0 +1,38 @@
+(function () {
+
+    'use strict';
+
+    if (typeof window.Cookies !== 'undefined') {
+        const cookieconsent = document.querySelector('.cookieconsent');
+
+        if (window.Cookies.get('cookieconsent') === undefined && cookieconsent) {
+            cookieconsent.classList.add('js-cookieconsent-open');
+        }
+
+        const cookie_buttons = Array.prototype.slice.call(
+            document.querySelectorAll('button[data-consent]')
+        );
+        const sitedomain = window.location.hostname.split('.').slice(-2);
+        const cookiedomain = sitedomain.join('.');
+        let cookie_options = [];
+        cookie_options['domain'] = cookiedomain;
+        cookie_options['sameSite'] = 'strict';
+        cookie_options['expires'] = 365;
+        if (window.location.protocol === 'https:') {
+            cookie_options['secure'] = true;
+        }
+
+        cookie_buttons.forEach(function (button) {
+            button.addEventListener('click', function () {
+                if (button.getAttribute('data-consent') == 'true') {
+                    window.Cookies.set('cookieconsent', 'accept', cookie_options);
+                }
+                else {
+                    window.Cookies.set('cookieconsent', 'decline', cookie_options);
+                }
+                cookieconsent.classList.remove('js-cookieconsent-open');
+            })
+        });
+    }
+
+})();

assets/js/lib/js.cookie.min.js

@@ -0,0 +1,3 @@
+/*! js-cookie v2.2.1 | MIT */
+
+!function(a){var b;if("function"==typeof define&&define.amd&&(define(a),b=!0),"object"==typeof exports&&(module.exports=a(),b=!0),!b){var c=window.Cookies,d=window.Cookies=a();d.noConflict=function(){return window.Cookies=c,d}}}(function(){function a(){for(var a=0,b={};a<arguments.length;a++){var c=arguments[a];for(var d in c)b[d]=c[d]}return b}function b(a){return a.replace(/(%[0-9A-Z]{2})+/g,decodeURIComponent)}function c(d){function e(){}function f(b,c,f){if("undefined"!=typeof document){f=a({path:"/"},e.defaults,f),"number"==typeof f.expires&&(f.expires=new Date(1*new Date+864e5*f.expires)),f.expires=f.expires?f.expires.toUTCString():"";try{var g=JSON.stringify(c);/^[\{\[]/.test(g)&&(c=g)}catch(j){}c=d.write?d.write(c,b):encodeURIComponent(c+"").replace(/%(23|24|26|2B|3A|3C|3E|3D|2F|3F|40|5B|5D|5E|60|7B|7D|7C)/g,decodeURIComponent),b=encodeURIComponent(b+"").replace(/%(23|24|26|2B|5E|60|7C)/g,decodeURIComponent).replace(/[\(\)]/g,escape);var h="";for(var i in f)f[i]&&(h+="; "+i,!0!==f[i]&&(h+="="+f[i].split(";")[0]));return document.cookie=b+"="+c+h}}function g(a,c){if("undefined"!=typeof document){for(var e={},f=document.cookie?document.cookie.split("; "):[],g=0;g<f.length;g++){var h=f[g].split("="),i=h.slice(1).join("=");c||'"'!==i.charAt(0)||(i=i.slice(1,-1));try{var j=b(h[0]);if(i=(d.read||d)(i,j)||b(i),c)try{i=JSON.parse(i)}catch(k){}if(e[j]=i,a===j)break}catch(k){}}return a?e[a]:e}}return e.set=f,e.get=function(a){return g(a,!1)},e.getJSON=function(a){return g(a,!0)},e.remove=function(b,c){f(b,"",a(c,{expires:-1}))},e.defaults={},e.withConverter=c,e}return c(function(){})});

assets/js/tracking.js

@@ -3,16 +3,29 @@
  * A JavaScript file for analytic tracking.
  */
 
+var cookieConsent = {{ .Site.Params.cookieConsent | default false }};
+
 var idSite = '{{ .Site.Params.piwikSiteID }}';
 var matomoTrackingApiUrl = 'https://{{ .Site.Params.piwikTrackerUrl }}/matomo.php';
 
 var _paq = window._paq || [];
+if (cookieConsent) {
+  _paq.push(['requireConsent']);
+}
 _paq.push(['setTrackerUrl', matomoTrackingApiUrl]);
 _paq.push(['setSiteId', idSite]);
 _paq.push(['trackPageView']);
 _paq.push(['enableLinkTracking']);
+if (typeof window.Cookies !== 'undefined' && Cookies.get('cookieconsent') === 'accept') {
+  _paq.push(['setConsentGiven']);
+}
 
 var googleAnalytics = '{{ .Site.GoogleAnalytics }}';
+if (cookieConsent) {
+  if (typeof window.Cookies === 'undefined' || Cookies.get('cookieconsent') !== 'accept') {
+    window['ga-disable-' + googleAnalytics] = true;
+  }
+}
 
 var _gaq = window._gaq || [];
 _gaq.push(['_setAccount', googleAnalytics]);