Limelight Digital Bid Adapter: Add user sync (prebid#7560)

* Limelight Digital Bid Adapter: Add user sync

* improve tests

* Improve unique size checking

* fix adunit sizes

* remove unused variable

modules/limelightDigitalBidAdapter.js

@@ -1,4 +1,4 @@
-import { logMessage, groupBy, uniques } from '../src/utils.js';
+import { logMessage, groupBy, uniques, flatten, deepAccess } from '../src/utils.js';
 import { registerBidder } from '../src/adapters/bidderFactory.js';
 import { BANNER, VIDEO } from '../src/mediaTypes.js';
 import {ajax} from '../src/ajax.js';
@@ -92,6 +92,26 @@ export const spec = {
     }
     return bidResponses;
   },
+
+  getUserSyncs: (syncOptions, serverResponses, gdprConsent, uspConsent) => {
+    const syncs = serverResponses.map(response => response.body).reduce(flatten, [])
+      .map(response => deepAccess(response, 'ext.sync')).filter(Boolean);
+    const iframeSyncUrls = !syncOptions.iframeEnabled ? [] : syncs.map(sync => sync.iframe).filter(Boolean)
+      .filter(uniques).map(url => {
+        return {
+          type: 'iframe',
+          url: url
+        }
+      });
+    const pixelSyncUrls = !syncOptions.pixelEnabled ? [] : syncs.map(sync => sync.pixel).filter(Boolean)
+      .filter(uniques).map(url => {
+        return {
+          type: 'image',
+          url: url
+        }
+      });
+    return [iframeSyncUrls, pixelSyncUrls].reduce(flatten, []);
+  }
 };
 
 registerBidder(spec);
@@ -125,7 +145,7 @@ function buildPlacement(bidRequest) {
         break;
     }
   }
-  sizes = (sizes || []).concat(bidRequest.sizes || []).filter(uniques);
+  sizes = (sizes || []).concat(bidRequest.sizes || []);
   return {
     host: bidRequest.params.host,
     adUnit: {

test/spec/modules/limelightDigitalBidAdapter_spec.js

@@ -299,6 +299,160 @@ describe('limelightDigitalAdapter', function () {
       expect(spec.interpretResponse(bidResponses)).to.deep.equal([ resObject ]);
     });
   });
+  describe('getUserSyncs', function () {
+    const serverResponses = [
+      {
+        body: [
+          {
+            ext: {
+              sync: {
+                iframe: 'iframeUrl',
+              }
+            }
+          },
+          {
+            ext: {
+              sync: {
+                pixel: 'pixelUrl'
+              }
+            }
+          },
+          {},
+          {
+            ext: {}
+          },
+          {
+            ext: {
+              sync: {}
+            }
+          },
+          {
+            ext: {
+              sync: {
+                iframe: 'iframeUrl2',
+                pixel: 'pixelUrl3'
+              }
+            }
+          }
+        ]
+      },
+      {
+        body: [
+          {
+            ext: {
+              sync: {
+                iframe: 'iframeUrl2',
+                pixel: 'pixelUrl2'
+              }
+            }
+          },
+          {
+            ext: {
+              sync: {
+                iframe: 'iframeUrl3',
+                pixel: 'pixelUrl3'
+              }
+            }
+          }
+        ]
+      }
+    ];
+    it('should return empty array if server responses do not contain sync urls', function () {
+      const syncOptions = {
+        iframeEnabled: true,
+        pixelEnabled: true
+      };
+      const serverResponsesWithoutSyncUrls = serverResponses.map(serverResponse => {
+        const serverResponseWithoutSyncUrls = Object.assign({}, serverResponse);
+        serverResponseWithoutSyncUrls.body = serverResponse.body.map(serverResponseBody => {
+          const serverResponseBodyWithoutSyncUrls = Object.assign({}, serverResponseBody);
+          delete serverResponseBodyWithoutSyncUrls.ext;
+          return serverResponseBodyWithoutSyncUrls;
+        });
+        return serverResponseWithoutSyncUrls;
+      });
+      expect(spec.getUserSyncs(syncOptions, serverResponsesWithoutSyncUrls)).to.be.an('array').that.is.empty;
+    });
+    it('should return empty array if all sync types are disabled', function () {
+      const syncOptions = {
+        iframeEnabled: false,
+        pixelEnabled: false
+      };
+      expect(spec.getUserSyncs(syncOptions, serverResponses)).to.be.an('array').that.is.empty;
+    });
+    it('should return iframe sync urls if iframe sync is enabled', function () {
+      const syncOptions = {
+        iframeEnabled: true,
+        pixelEnabled: false
+      };
+      expect(spec.getUserSyncs(syncOptions, serverResponses)).to.deep.equal([
+        {
+          type: 'iframe',
+          url: 'iframeUrl'
+        },
+        {
+          type: 'iframe',
+          url: 'iframeUrl2'
+        },
+        {
+          type: 'iframe',
+          url: 'iframeUrl3'
+        }
+      ]);
+    });
+    it('should return image sync urls if pixel sync is enabled', function () {
+      const syncOptions = {
+        iframeEnabled: false,
+        pixelEnabled: true
+      };
+      expect(spec.getUserSyncs(syncOptions, serverResponses)).to.deep.equal([
+        {
+          type: 'image',
+          url: 'pixelUrl'
+        },
+        {
+          type: 'image',
+          url: 'pixelUrl3'
+        },
+        {
+          type: 'image',
+          url: 'pixelUrl2'
+        }
+      ]);
+    });
+    it('should return all sync urls if all sync types are enabled', function () {
+      const syncOptions = {
+        iframeEnabled: true,
+        pixelEnabled: true
+      }
+      expect(spec.getUserSyncs(syncOptions, serverResponses)).to.deep.equal([
+        {
+          type: 'iframe',
+          url: 'iframeUrl'
+        },
+        {
+          type: 'iframe',
+          url: 'iframeUrl2'
+        },
+        {
+          type: 'iframe',
+          url: 'iframeUrl3'
+        },
+        {
+          type: 'image',
+          url: 'pixelUrl'
+        },
+        {
+          type: 'image',
+          url: 'pixelUrl3'
+        },
+        {
+          type: 'image',
+          url: 'pixelUrl2'
+        }
+      ]);
+    });
+  });
 });
 
 function validateAdUnit(adUnit, bid) {
@@ -323,5 +477,5 @@ function validateAdUnit(adUnit, bid) {
       width: size[0],
       height: size[1]
     }
-  }))
+  }));
 }