var TP_COOKIES = ['TP_UTM', 'TP_TRK', 'TP_REFERRER', 'TP_UTM_SOURCE','TP_UTM_MEDIUM', 'TP_UTM_CAMPAIGN', 'TP_UTM_CONTENT'];
var TP_start = new Date();
var TP_TOPIC ="analytics-topic";
var TP_BUCKET="tp-web-analytics";

const TP_trackingScript_URL = "https://hello-ixm6jhfnca-uw.a.run.app/analytics/";   
let TP_trackingScript="";

var TP_UUID = TP_getCookie("TP_UUID") || TP_generateUUID();
var TP_dt = new Date();
var TP_PV = TP_getCookie("TP_PV") || 0;
TP_PV = parseInt(TP_PV) + 1;
if (TP_PV == 1) {
    TP_setCookie('TP_FIRST_PAGE', window.location.href);   
}

let TP_UTM = TP_getParameterByName("utm") || TP_getCookie("TP_UTM") || "";
let TP_TRK = TP_getParameterByName("trk") ||  TP_getCookie("TP_TRK") || "";
let TP_REFERRER = document.referrer || TP_getCookie("TP_REFERRER") || "";
let TP_UTM_SOURCE = TP_getParameterByName("utm_source") || TP_getCookie("TP_UTM_SOURCE") || "";
let TP_UTM_CAMPAIGN = TP_getParameterByName("utm_campaign") || TP_getCookie("TP_UTM_CAMPAIGN") || "";
let TP_UTM_MEDIUM = TP_getParameterByName("utm_medium") || TP_getCookie("TP_UTM_MEDIUM") || "";
let TP_UTM_CONTENT = TP_getParameterByName("utm_content") || TP_getCookie("TP_UTM_CONTENT") || "";
let TP_UTM_TERM = TP_getParameterByName("utm_term") || TP_getCookie("TP_UTM_TERM") || "";
let TP_FIRST_PAGE = TP_getCookie("TP_FIRST_PAGE") || document.URL;
var TP_PAGE_LOAD_TIME="NULL";
try {
	TP_PAGE_LOAD_TIME =  window.performance.timing.domContentLoadedEventEnd- window.performance.timing.navigationStart;
} catch(e) {
	
}

TP_setCookie("TP_UUID", TP_UUID);
TP_setCookie("TP_PV", TP_PV);
TP_setCookie("TP_UTM", TP_UTM);
TP_setCookie("TP_TRK", TP_TRK);
TP_setCookie("TP_REFERRER", TP_REFERRER);
TP_setCookie("TP_UTM_SOURCE", TP_UTM_SOURCE);
TP_setCookie("TP_UTM_MEDIUM", TP_UTM_MEDIUM);
TP_setCookie("TP_UTM_CAMPAIGN", TP_UTM_CAMPAIGN);
TP_setCookie("TP_UTM_TERM", TP_UTM_TERM);
TP_setCookie("TP_UTM_CONTENT", TP_UTM_CONTENT);
TP_setCookie("TP_FIRST_PAGE", TP_FIRST_PAGE);

let TP_PAYLOAD = {"DOMAIN": window.location.hostname, "TP_PAGE_LOAD_TIME": TP_PAGE_LOAD_TIME, "TP_UUID": TP_UUID, "TP_PV": TP_PV, "TP_TRK": TP_TRK, "TP_UTM": TP_UTM,"TP_REFERRER": TP_REFERRER, "TP_UTM_SOURCE": TP_UTM_SOURCE, "TP_UTM_MEDIUM": TP_UTM_MEDIUM, "TP_UTM_CAMPAIGN": TP_UTM_CAMPAIGN, "TP_UTM_TERM": TP_UTM_TERM, "TP_UTM_CONTENT": TP_UTM_CONTENT, "TP_FIRST_PAGE": TP_FIRST_PAGE, "FULL_URL": document.URL, "TP_BUCKET": TP_BUCKET, "TP_TOPIC": TP_TOPIC};

function TP_getParameterByName(name, url = window.location.href) {
    name = name.replace(/[\[\]]/g, '\\$&');
    var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),
        results = regex.exec(url);
    if (!results) return null;
    if (!results[2]) return '';
    return decodeURIComponent(results[2]);
}

function TP_makeid(length) {
    var result           = '';
    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
      result += characters.charAt(Math.floor(Math.random() * 
 charactersLength));
   }
   return result;
}

function TP_generateUUID() { // Public Domain/MIT
    var d = new Date().getTime();//Timestamp
    var d2 = ((typeof performance !== 'undefined') && performance.now && (performance.now()*1000)) || 0;//Time in microseconds since page-load or 0 if unsupported
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = Math.random() * 16;//random number between 0 and 16
        if(d > 0){//Use timestamp until depleted
            r = (d + r)%16 | 0;
            d = Math.floor(d/16);
        } else {//Use microseconds since page-load if supported
            r = (d2 + r)%16 | 0;
            d2 = Math.floor(d2/16);
        }
        return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16);
    });
}

function TP_tracking_event(eventType, eventDetails){
    var TP_end = new Date();
    let TP_PAYLOAD_NEW = JSON.parse(JSON.stringify(TP_PAYLOAD));
    let eventURL = "";
    if (!eventType || eventType=="" || eventType=="page_view") {
        eventType='page_view';
        eventURL = "";
    } else {
        eventURL = "event";
    }
    
    if (!eventDetails) {
        
        eventDetails='{}';
    }
    TP_trackingScript=TP_trackingScript_URL+eventURL;
   
    function reqListener () {
    }
    
   
    TP_PAYLOAD_NEW.EVENT_TYPE = eventType;
    TP_PAYLOAD_NEW.EVENT_DETAILS = eventDetails;
    TP_PAYLOAD_NEW.TIME_SPENT = (TP_end - TP_start);
    const oReq = new XMLHttpRequest();
    oReq.addEventListener("load", reqListener);
    oReq.open("POST", TP_trackingScript);
    oReq.send(JSON.stringify(TP_PAYLOAD_NEW));
    return true;

}

function TP_setCookie(cname, cvalue) {
    const d = new Date();
    d.setTime(d.getTime() + (365 * 24 * 60 * 60 * 1000));
    let expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function TP_getCookie(name) {
	let value = document.cookie;
	let parts = value.split(name+'=');
	if (parts.length === 2) return parts.pop().split(';').shift();
}

// Automatically fire the page_view event here
TP_tracking_event("page_view");


// backward compatability functions for mixpanel
let mixpanel = {};

mixpanel.track = function(event_type, payload) {
    TP_tracking_event(event_type,payload);
    return true;
}

mixpanel.identify = function(MX_ID){
    TP_tracking_event('MX_ID',MX_ID);
    return true;
};

mixpanel.people = {};

mixpanel.people.set = function(MX_PEOPLE) {
    TP_tracking_event('MX_PEOPLE',MX_PEOPLE);
    return true;
}

mixpanel.people.alias = function(MX_ALIAS) {
    TP_tracking_event('MX_PEOPLE_ALIAS',MX_ALIAS);
    return true;
}

mixpanel.alias = function(MX_ALIAS) {
    TP_tracking_event('MX_ALIAS',MX_ALIAS);
    return true;
}

function gtag(event_type, action, payload) {
// backward compatablity for GA events
//
//	gtag('event', <action>, {
//	  'event_category': <category>,
//	  'event_label': <label>,
//	  'value': <value>
//	});

	payload.action = action;
	TP_tracking_event(event_type,payload);

}