Updated API for selected dog type

Signed-off-by: Pin <wf6DJd8a3xSSCZbn@protonmail.com>

handlers/apihandler.go

@@ -29,7 +29,15 @@ func APIHandler(w http.ResponseWriter, r *http.Request) {
 	switch r.Method {
 	case "GET":
 		var dogquery structs.DogPicRow
-		dogquery = db.RandomSelect()
-		json.NewEncoder(w).Encode(dogquery)
+		keys := r.URL.Query().Get("dog")
+		if len(keys) == 0 {
+			dogquery = db.RandomSelect()
+			json.NewEncoder(w).Encode(dogquery)
+			return
+		} else {
+			dogquery = db.DogSelect(keys)
+			json.NewEncoder(w).Encode(dogquery)
+			return
+		}
 	}
 }