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const getUrl = require('getUrl');
const sendPixel = require('sendPixel');
const setInWindow = require('setInWindow');
const getTimestamp = require('getTimestamp');
const injectScript = require('injectScript');
const copyFromWindow = require('copyFromWindow');
const encodeUriComponent = require('encodeUriComponent');
const callLater = require('callLater');
/**
* Globals
*/
const conversionIds = data.conversionId ?
data.conversionId.split(',').slice(0,3).map(id => id.trim())
: '';
const allPids = [];
const pageUrl = data.customUrl ? data.customUrl : getUrl();
const eventId = data.eventId;
let isScriptInjected = false;
/**
* Checks presence of LinkedIn Insight tag code.
*/
const isInsightTagAPIAvailable = () => typeof copyFromWindow('lintrk') === 'function';
/**
* Reads and Sets in global namespace all applicable PIDs on the page
*/
const setAllPids = (function() {
const partnerIds = {};
const bizoId = copyFromWindow('_bizo_data_partner_id');
const bizoIds = copyFromWindow('_bizo_data_partner_ids') || [];
const linkedInPartnerId = copyFromWindow('_linkedin_data_partner_id');
const linkedInPartnerIds = copyFromWindow('_linkedin_data_partner_ids') || [];
const addPid = pid => {
if (pid && !partnerIds[pid]) {
partnerIds[pid] = true;
allPids.push(pid);
}
};
// add the partner ids set via this GTM installation
const inputPids = data.partnerId.split(',');
inputPids.forEach(id => addPid(id.trim()));
// Add all PIDs that may have updated the global, helps skipping following adds.
addPid(linkedInPartnerId);
linkedInPartnerIds.forEach(id => addPid(id));
// add other PIDs from page
addPid(bizoId);
bizoIds.forEach(id => addPid(id));
// Update the main namespace for future tracking by InsightTag to include the partner IDs
setInWindow('_linkedin_data_partner_ids', allPids, true);
}());
/**
* Generate query params only for GTM based tracking
*/
function generateQueryParamsForGTM(cid) {
const encodedPIDs = encodeUriComponent(allPids.join(','));
let result = 'pid=' + encodedPIDs;
result += '&tm=gtmv2';
result += cid ? '&conversionId=' + encodeUriComponent(cid) : '';
result += '&url=' + encodeUriComponent(pageUrl);
result += eventId ? '&eventId=' + encodeUriComponent(eventId) : '';
result += '&v=2&fmt=js&time=' + getTimestamp();
return result;
}
// Success call back to InsightTag injection
function didInjectInsightTag() {
callLater(() => {
trackByInsightTag();
});
}
// Callback to plain GTM when InsightTag code failed to inject
function didFailInsightTag() {
trackByPlainGTM();
}
function trackByPlainGTM() {
if (conversionIds.length && conversionIds.length <= 3) {
conversionIds.forEach(id => {
const trackingUrl = 'https://px.ads.linkedin.com/collect?' + generateQueryParamsForGTM(id);
sendPixel(trackingUrl, data.gtmOnSuccess, data.gtmOnFailure);
});
} else {
sendPixel('https://px.ads.linkedin.com/collect?' + generateQueryParamsForGTM(), data.gtmOnSuccess, data.gtmOnFailure);
}
}
/**
* Download LinkedIn Insight tag core code if `window.lintrk` is not available
* Also ensure it doesn’t default fire.
*/
function trackByInsightTag() {
if (isInsightTagAPIAvailable()) {
const lintrk = copyFromWindow('lintrk');
const options = { tmsource: 'gtmv2' };
options.conversion_url = pageUrl;
if (eventId) {
options.event_id = eventId;
}
if (conversionIds.length && conversionIds.length <= 3) {
conversionIds.forEach(id => {
options.conversion_id = id;
lintrk('track', options);
});
} else {
lintrk('track', options);
}
data.gtmOnSuccess();
} else if (!isScriptInjected) {
isScriptInjected = true;
setInWindow('_already_called_lintrk', true, true);
injectScript('https://snap.licdn.com/li.lms-analytics/insight.min.js', didInjectInsightTag, didFailInsightTag);
} else {
didInjectInsightTag();
}
}
trackByInsightTag();
