From 20cabbace0ca3b387ef242e658009f81321fce16 Mon Sep 17 00:00:00 2001
From: CathyH <CathyHuangtw@users.noreply.github.com>
Date: Mon, 23 Jul 2018 22:59:37 -0700
Subject: [PATCH] C1X Adapter GDPR Support (#2821)

* C1X Adapter GDPR Support

* remove the redundant userSync

* fixed keyword spacing issue
---
 modules/c1xBidAdapter.js                | 22 +++++++++++++++++-----
 test/spec/modules/c1xBidAdapter_spec.js | 18 ++++++++++++++++++
 2 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/modules/c1xBidAdapter.js b/modules/c1xBidAdapter.js
index af1de3739853..ff1b011f7871 100644
--- a/modules/c1xBidAdapter.js
+++ b/modules/c1xBidAdapter.js
@@ -14,7 +14,7 @@ const LOG_MSG = {
 
 /**
  * Adapter for requesting bids from C1X header tag server.
- * v3.0 (c) C1X Inc., 2017
+ * v3.1 (c) C1X Inc., 2018
  */
 
 export const c1xAdapter = {
@@ -29,9 +29,10 @@ export const c1xAdapter = {
     return !!(bid.adUnitCode && siteId);
   },
 
-  buildRequests: function(bidRequests) {
+  buildRequests: function(bidRequests, bidderRequest) {
     let payload = {};
     let tagObj = {};
+    let pixelUrl = '';
     const adunits = bidRequests.length;
     const rnd = new Date().getTime();
     const c1xTags = bidRequests.map(bidToTag);
@@ -48,15 +49,26 @@ export const c1xAdapter = {
       response: 'json',
       compress: 'gzip'
     }
-    Object.assign(payload, tagObj);
 
-    let payloadString = stringifyPayload(payload);
+    // for GDPR support
+    if (bidderRequest && bidderRequest.gdprConsent) {
+      payload['consent_string'] = bidderRequest.gdprConsent.consentString;
+      payload['consent_required'] = (typeof bidderRequest.gdprConsent.gdprApplies === 'boolean') ? bidderRequest.gdprConsent.gdprApplies.toString() : 'true'
+      ;
+    }
 
     if (pixelId) {
-      const pixelUrl = (useSSL ? 'https:' : 'http:') + PIXEL_ENDPOINT + pixelId;
+      pixelUrl = (useSSL ? 'https:' : 'http:') + PIXEL_ENDPOINT + pixelId;
+      if (payload.consent_required) {
+        pixelUrl += '&gdpr=' + (bidderRequest.gdprConsent.gdprApplies ? 1 : 0);
+        pixelUrl += '&consent=' + encodeURIComponent(bidderRequest.gdprConsent.consentString || '');
+      }
       userSync.registerSync('image', BIDDER_CODE, pixelUrl);
     }
 
+    Object.assign(payload, tagObj);
+
+    let payloadString = stringifyPayload(payload);
     // ServerRequest object
     return {
       method: 'GET',
diff --git a/test/spec/modules/c1xBidAdapter_spec.js b/test/spec/modules/c1xBidAdapter_spec.js
index 0517668ea0dc..bd7fa5df669a 100644
--- a/test/spec/modules/c1xBidAdapter_spec.js
+++ b/test/spec/modules/c1xBidAdapter_spec.js
@@ -114,6 +114,24 @@ describe('C1XAdapter', () => {
       const payloadObj = JSON.parse(originalPayload);
       expect(payloadObj.pageurl).to.equal('http://c1exchange.com/');
     });
+
+    it('should convert GDPR Consent to proper form and attach to request', () => {
+      let consentString = 'BOP2gFWOQIFovABABAENBGAAAAAAMw';
+      let bidderRequest = {
+        'bidderCode': 'c1x',
+        'gdprConsent': {
+          'consentString': consentString,
+          'gdprApplies': true
+        }
+      }
+      bidderRequest.bids = bidRequests;
+
+      const request = c1xAdapter.buildRequests(bidRequests, bidderRequest);
+      const originalPayload = parseRequest(request.data);
+      const payloadObj = JSON.parse(originalPayload);
+      expect(payloadObj['consent_string']).to.equal('BOP2gFWOQIFovABABAENBGAAAAAAMw');
+      expect(payloadObj['consent_required']).to.equal('true');
+    });
   });
 
   describe('interpretResponse', () => {