Implement GDPR banner cookie (because irony)

public/js/jquery.cookie.js

@@ -0,0 +1,114 @@
+/*!
+ * jQuery Cookie Plugin v1.4.1
+ * https://github.com/carhartl/jquery-cookie
+ *
+ * Copyright 2006, 2014 Klaus Hartl
+ * Released under the MIT license
+ */
+(function (factory) {
+	if (typeof define === 'function' && define.amd) {
+		// AMD (Register as an anonymous module)
+		define(['jquery'], factory);
+	} else if (typeof exports === 'object') {
+		// Node/CommonJS
+		module.exports = factory(require('jquery'));
+	} else {
+		// Browser globals
+		factory(jQuery);
+	}
+}(function ($) {
+
+	var pluses = /\+/g;
+
+	function encode(s) {
+		return config.raw ? s : encodeURIComponent(s);
+	}
+
+	function decode(s) {
+		return config.raw ? s : decodeURIComponent(s);
+	}
+
+	function stringifyCookieValue(value) {
+		return encode(config.json ? JSON.stringify(value) : String(value));
+	}
+
+	function parseCookieValue(s) {
+		if (s.indexOf('"') === 0) {
+			// This is a quoted cookie as according to RFC2068, unescape...
+			s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
+		}
+
+		try {
+			// Replace server-side written pluses with spaces.
+			// If we can't decode the cookie, ignore it, it's unusable.
+			// If we can't parse the cookie, ignore it, it's unusable.
+			s = decodeURIComponent(s.replace(pluses, ' '));
+			return config.json ? JSON.parse(s) : s;
+		} catch(e) {}
+	}
+
+	function read(s, converter) {
+		var value = config.raw ? s : parseCookieValue(s);
+		return $.isFunction(converter) ? converter(value) : value;
+	}
+
+	var config = $.cookie = function (key, value, options) {
+
+		// Write
+
+		if (arguments.length > 1 && !$.isFunction(value)) {
+			options = $.extend({}, config.defaults, options);
+
+			if (typeof options.expires === 'number') {
+				var days = options.expires, t = options.expires = new Date();
+				t.setMilliseconds(t.getMilliseconds() + days * 864e+5);
+			}
+
+			return (document.cookie = [
+				encode(key), '=', stringifyCookieValue(value),
+				options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
+				options.path    ? '; path=' + options.path : '',
+				options.domain  ? '; domain=' + options.domain : '',
+				options.secure  ? '; secure' : ''
+			].join(''));
+		}
+
+		// Read
+
+		var result = key ? undefined : {},
+			// To prevent the for loop in the first place assign an empty array
+			// in case there are no cookies at all. Also prevents odd result when
+			// calling $.cookie().
+			cookies = document.cookie ? document.cookie.split('; ') : [],
+			i = 0,
+			l = cookies.length;
+
+		for (; i < l; i++) {
+			var parts = cookies[i].split('='),
+				name = decode(parts.shift()),
+				cookie = parts.join('=');
+
+			if (key === name) {
+				// If second argument (value) is a function it's a converter...
+				result = read(cookie, value);
+				break;
+			}
+
+			// Prevent storing a cookie that we couldn't decode.
+			if (!key && (cookie = read(cookie)) !== undefined) {
+				result[name] = cookie;
+			}
+		}
+
+		return result;
+	};
+
+	config.defaults = {};
+
+	$.removeCookie = function (key, options) {
+		// Must not alter options, thus extending a fresh object...
+		$.cookie(key, '', $.extend({}, options, { expires: -1 }));
+		return !$.cookie(key);
+	};
+
+}));

templates/layouts/swagg.html.ep

@@ -13,16 +13,9 @@
 <audio id="soundtrack" src="/Music/Smashmouth-All-Star.mp3" preload="auto">
 </audio>
 <!-- "GDPR" banner -->
-<script>
-  function closeIt() {
-      document.getElementById("gdpr").style.display = "none";
-  }
-
-  function playIt() {
-      document.getElementById("soundtrack").play();
-      closeIt();
-  }
+<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
 </script>
+<script src="/js/jquery.cookie.js"></script>
 <div id="gdpr">
   <b>Notice:</b> This site uses kickass MIDI technology instead of cookies.
   <img alt="a compact disc playing music" src="/Pictures/Music_CD.gif"
@@ -31,6 +24,20 @@
   <button class="win95button" onclick="playIt();"><u>O</u>K</button>
   <button class="win95button" onclick="closeIt();"><u>C</u>ancel</button>
 </div>
+<script>
+  function closeIt() {
+      document.getElementById("gdpr").style.display = "none";
+      document.cookie = "banner=clunk";
+  }
+
+  function playIt() {
+      document.getElementById("soundtrack").play();
+      closeIt();
+  }
+  if ($.cookie('banner') === "clunk") {
+      document.getElementById("gdpr").style.display = "none";
+  }
+</script>
 <!-- Bonzi buddy -->
 <div id="bonzi">
   <img alt="a purple gorilla" src="/Pictures/Bonzi_Buddy.png">