Beachfront: Fix for bid floor issue#1787 (prebid#1878)

Co-authored-by: jim naumann <jim@beachfront.com>

adapters/beachfront/beachfront.go

@@ -294,14 +294,12 @@ func getBannerRequest(request *openrtb2.BidRequest) (beachfrontBannerRequest, []
 			continue
 		}
 
+		setBidFloor(&beachfrontExt, &request.Imp[i])
+
 		slot := beachfrontSlot{
 			Id:       appid,
 			Slot:     request.Imp[i].ID,
-			Bidfloor: beachfrontExt.BidFloor,
-		}
-
-		if beachfrontExt.BidFloor <= minBidFloor {
-			slot.Bidfloor = 0
+			Bidfloor: request.Imp[i].BidFloor,
 		}
 
 		for j := 0; j < len(request.Imp[i].Banner.Format); j++ {
@@ -468,12 +466,7 @@ func getVideoRequests(request *openrtb2.BidRequest) ([]beachfrontVideoRequest, [
 		imp.Banner = nil
 		imp.Ext = nil
 		imp.Secure = &secure
-
-		if beachfrontExt.BidFloor <= minBidFloor {
-			imp.BidFloor = 0
-		} else {
-			imp.BidFloor = beachfrontExt.BidFloor
-		}
+		setBidFloor(&beachfrontExt, &imp)
 
 		if imp.Video.H == 0 && imp.Video.W == 0 {
 			imp.Video.W = defaultVideoWidth
@@ -564,6 +557,24 @@ func (a *BeachfrontAdapter) MakeBids(internalRequest *openrtb2.BidRequest, exter
 	return bidResponse, errs
 }
 
+func setBidFloor(ext *openrtb_ext.ExtImpBeachfront, imp *openrtb2.Imp) {
+	var floor float64
+
+	if imp.BidFloor > 0 {
+		floor = imp.BidFloor
+	} else if ext.BidFloor > 0 {
+		floor = ext.BidFloor
+	} else {
+		floor = minBidFloor
+	}
+
+	if floor <= minBidFloor {
+		floor = 0
+	}
+
+	imp.BidFloor = floor
+}
+
 func (a *BeachfrontAdapter) getBidType(externalRequest *adapters.RequestData) openrtb_ext.BidType {
 	t := strings.Split(externalRequest.Uri, "=")[0]
 	if t == a.extraInfo.VideoEndpoint {

adapters/beachfront/beachfronttest/supplemental/banner-bad-request-400.json

@@ -34,7 +34,7 @@
             {
               "slot": "",
               "id": "dudAppId",
-              "bidfloor": 5.02,
+              "bidfloor": 0.02,
               "sizes": [
                 {
                   "w": 300,