Create Google-Forms-Quiz-Resolver.user.js

Google-Forms-Quiz-Resolver.user.js

@@ -0,0 +1,53 @@
+// ==UserScript==
+// @name         Google Forms Quiz Resolver
+// @namespace    http://tampermonkey.net/
+// @version      0.1
+// @description  This script tries to extract exact answer conditions from Google Forms and solve them
+// @author       You
+// @match        https://docs.google.com/forms/*
+// @grant        none
+// @run-at       document-end
+// ==/UserScript==
+
+(function() {
+    'use strict';
+
+    // skip form if already filled by url params
+    if(location.href.indexOf("?entry.") > 0) return;
+
+    var inputAreas = document.querySelectorAll("div[data-params]");
+    var urlPrefillParams = new URLSearchParams();
+
+    inputAreas.forEach((inputArea) => {
+        try {
+
+            var areaParams = inputArea.getAttribute("data-params");
+            var decodedAreaParams = JSON.parse("[" + areaParams.substr(areaParams.indexOf("["), areaParams.length));
+            var questionParams = decodedAreaParams[0][4][0];
+            var questionEntryId = questionParams[0];
+            var validationParams = questionParams[4];
+
+            // if validation disabled
+            if(validationParams.length === 0) return;
+
+            var validationRule = validationParams[0];
+            var valueToFill = null;
+
+            // type: number && match: exact
+            if(validationRule[0] === 1 && validationRule[1] === 5) {
+                valueToFill = validationRule[2][0];
+            }
+
+            if(valueToFill !== null) urlPrefillParams.set("entry." + questionEntryId, valueToFill);
+
+        } catch(ex) {
+            console.error("Param decoding failed", ex, inputArea);
+        }
+    });
+
+    if(Array.from(urlPrefillParams).length > 0) {
+        if(confirm("Found " + Array.from(urlPrefillParams).length + " exact values in form validation. Prefill form?")) {
+            location.search = urlPrefillParams;
+        }
+    }
+})();