IdentityLink - add logic for sending consent string (#4346)

modules/identityLinkIdSystem.js

@@ -28,16 +28,19 @@ export const identityLinkSubmodule = {
   /**
    * performs action to obtain id and return a value in the callback's response argument
    * @function
+   * @param {ConsentData} [consentData]
    * @param {SubmoduleParams} [configParams]
    * @returns {IdResponse|undefined}
    */
-  getId(configParams) {
+  getId(configParams, consentData) {
     if (!configParams || typeof configParams.pid !== 'string') {
       utils.logError('identityLink submodule requires partner id to be defined');
       return;
     }
+    const hasGdpr = (consentData && typeof consentData.gdprApplies === 'boolean' && consentData.gdprApplies) ? 1 : 0;
+    const gdprConsentString = hasGdpr ? consentData.consentString : '';
     // use protocol relative urls for http or https
-    const url = `https://api.rlcdn.com/api/identity/envelope?pid=${configParams.pid}`;
+    const url = `https://api.rlcdn.com/api/identity/envelope?pid=${configParams.pid}${hasGdpr ? '&ct=1&cv=' + gdprConsentString : ''}`;
     let resp;
     // if ats library is initialised, use it to retrieve envelope. If not use standard third party endpoint
     if (window.ats) {