https://instadoodle.com/js/tracking.js?v=12

1(function(){
2  function setCookie(name, value, days){
3    var d=new Date(); d.setTime(d.getTime()+days*864e5);
4    document.cookie=name+"="+encodeURIComponent(value)+"; expires="+d.toUTCString()+"; path=/; SameSite=Lax";
5  }
6  function getCookie(name){
7    var m=document.cookie.match(new RegExp('(^| )'+name+'=([^;]+)'));
8    return m?decodeURIComponent(m[2]):"";
9  }
10  function getParam(name){
11    return (new URL(location.href)).searchParams.get(name)||"";
12  }
13  
14  function getOrCreateUserId(){
15  var k = "id_user_id";
16  var v = localStorage.getItem(k);
17  if(!v){ v = uuidv4(); localStorage.setItem(k, v); }
18  return v;
19}
20
21  // Save first-touch landing and referrer
22  if (!localStorage.getItem("first_landing_url")) localStorage.setItem("first_landing_url", location.href);
23  if (!localStorage.getItem("first_referrer")) localStorage.setItem("first_referrer", document.referrer || "");
24
25  // Capture click IDs from URL into cookies
26  var clickParams = [
27    "fbclid","gclid","wbraid","gbraid","msclkid","ttclid","twclid","li_fat_id","sccid","epik"
28  ];
29  clickParams.forEach(function(p){
30    var v=getParam(p);
31    if (v) setCookie(p, v, 90);
32  });
33  
34  
35  var fbclidParam = getParam("fbclid");
36	if (fbclidParam) setCookie("fbclid", fbclidParam, 90);
37
38  // Ensure _fbc from fbclid if missing
39  if (!getCookie("_fbc")) {
40  var fbclid = fbclidParam || getCookie("fbclid");
41  if (fbclid) setCookie("_fbc", "fb.1."+Date.now()+"."+fbclid, 90);
42}
43
44  function getGaClientId(){
45    var ga=getCookie("_ga");
46    if(!ga) return "";
47    var parts=ga.split(".");
48    if(parts.length<4) return "";
49    return parts[2]+"."+parts[3];
50  }
51
52  function getGaSessionInfo(){
53    // GA4 cookie looks like: _ga_MEASID=GS1.1.1700000000.1.1.1700000500.0.0.0
54    // We can’t know MEASID here, so we scan cookies.
55    var cookies=document.cookie.split(";").map(c=>c.trim());
56    var ga4=cookies.find(c=>c.startsWith("_ga_"));
57    if(!ga4) return { ga_session_id:"", ga_session_number:"" };
58    var val=decodeURIComponent(ga4.split("=").slice(1).join("="));
59    var parts=val.split(".");
60    // GS1.1.<session_id>.<session_number>....
61    return {
62      ga_session_id: parts[2] || "",
63      ga_session_number: parts[3] || ""
64    };
65  }
66
67  function uuidv4(){
68    if (crypto && crypto.randomUUID) return crypto.randomUUID();
69    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,function(c){
70      var r=Math.random()*16|0,v=c=='x'?r:(r&0x3|0x8); return v.toString(16);
71    });
72  }
73
74  window.buildTrackingPayload = function(extra){
75    var eventId = localStorage.getItem("fs_event_id");
76    if(!eventId){ eventId=uuidv4(); localStorage.setItem("fs_event_id", eventId); }
77
78    var sess = getGaSessionInfo();
79
80    var payload = {
81      event_id: eventId,
82		user_id: getOrCreateUserId(),
83      // URLs
84      page_url: location.href,
85      page_path: location.pathname,
86      first_landing_url: localStorage.getItem("first_landing_url") || "",
87      first_referrer: localStorage.getItem("first_referrer") || "",
88      referrer: document.referrer || "",
89
90      // UTM
91      utm_source: getParam("utm_source") || "",
92      utm_medium: getParam("utm_medium") || "",
93      utm_campaign: getParam("utm_campaign") || "",
94      utm_term: getParam("utm_term") || "",
95      utm_content: getParam("utm_content") || "",
96
97      // Meta cookies
98      fbp: getCookie("_fbp"),
99      fbc: getCookie("_fbc"),
100      fbclid: getCookie("fbclid"),
101
102      // Google / other click IDs
103      gclid: getCookie("gclid"),
104      wbraid: getCookie("wbraid"),
105      gbraid: getCookie("gbraid"),
106      msclkid: getCookie("msclkid"),
107      ttclid: getCookie("ttclid"),
108      twclid: getCookie("twclid"),
109      li_fat_id: getCookie("li_fat_id"),
110      sccid: getCookie("sccid"),
111      epik: getCookie("epik"),
112
113      // GA identifiers
114      ga_client_id: getGaClientId(),
115      ga_session_id: sess.ga_session_id,
116      ga_session_number: sess.ga_session_number,
117
118
119      // Device
120      user_agent: navigator.userAgent,
121      language: navigator.language || "",
122	   
123	  ipAddress: (window.__client_ip || "")
124    };
125
126    if (extra && typeof extra === "object") {

127      Object.keys(extra).forEach(k => payload[k] = extra[k]);
128    }
129
130    return payload;
131  };
132})();