[amp] site.pageパラメータをampページURLに変更する機能追加

endpoints/openrtb2/amp_auction.go

@@ -192,6 +192,20 @@ func (deps *endpointDeps) AmpAuction(w http.ResponseWriter, r *http.Request, _ h
 		LegacyLabels: labels,
 	}
 
+	u, errUrl := url.Parse(r.Header.Get("Referer"))
+
+	auctionRequest.BidRequest.Site.Domain = auctionRequest.BidRequest.Site.Page
+
+	if errUrl == nil {
+		if u.Host == auctionRequest.BidRequest.Site.Page {
+			auctionRequest.BidRequest.Site.Domain = auctionRequest.BidRequest.Site.Page
+			auctionRequest.BidRequest.Site.Page = u.Host + u.Path
+		} else if dirs := strings.Split(u.Path, "/"); len(dirs) >= 4 && dirs[3] == auctionRequest.BidRequest.Site.Page {
+			auctionRequest.BidRequest.Site.Domain = dirs[3]
+			auctionRequest.BidRequest.Site.Page = strings.Join(dirs[3:], "/")
+		}
+	}
+
 	response, err := deps.ex.HoldAuction(ctx, auctionRequest, nil)
 	ao.AuctionResponse = response