Also return start and ending height in z_getstats json

src/wallet/rpcwallet.cpp

@@ -3689,6 +3689,8 @@ UniValue z_getstats(const UniValue& params, bool fHelp, const CPubKey& mypk)
     int total_ztxs_100_or_more_zins = 0, total_ztxs_100_or_more_zouts = 0;
     int largest_zins = 0, largest_zouts = 0;
     std::string largest_zins_txid = "", largest_zouts_txid = "";
+    UniValue ret(UniValue::VOBJ);
+    ret.pushKV("start_height", nHeight);
 
     // given a single block height, we calculate stats for that height
     if (params.size() == 1) {
@@ -3763,6 +3765,8 @@ UniValue z_getstats(const UniValue& params, bool fHelp, const CPubKey& mypk)
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Ending block height out of range");
         }
 
+        ret.pushKV("end_height", nHeight2);
+
         // get the stats for every block in the range
         for(int currentHeight = nHeight; currentHeight <= nHeight2; currentHeight++) {
             auto strHash = chainActive[currentHeight]->GetBlockHash().GetHex();
@@ -3828,7 +3832,6 @@ UniValue z_getstats(const UniValue& params, bool fHelp, const CPubKey& mypk)
             }
         }
     }
-    UniValue ret(UniValue::VOBJ);
     double avg_zins  = total_ztxs > 0 ? (double) total_zins  / total_ztxs : 0.0;
     double avg_zouts = total_ztxs > 0 ? (double) total_zouts / total_ztxs : 0.0;
     ret.pushKV("total_ztxs", total_ztxs);