fix indexing nft items with addr_none owner (#83)

ton-index-postgres-v2/src/InsertManagerPostgres.cpp

@@ -1327,12 +1327,16 @@ std::string InsertBatchPostgres::insert_nft_items(pqxx::work &txn) {
     if (nft_item.collection_address) {
       raw_collection_address = convert::to_raw_address(nft_item.collection_address.value());
     }
+    std::optional<std::string> raw_owner_address;
+    if (nft_item.owner_address) {
+      raw_owner_address = convert::to_raw_address(nft_item.owner_address.value());
+    }
     query << "("
           << txn.quote(convert::to_raw_address(nft_item.address)) << ","
           << TO_SQL_BOOL(nft_item.init) << ","
           << nft_item.index << ","
           << TO_SQL_OPTIONAL_STRING(raw_collection_address, txn) << ","
-          << txn.quote(convert::to_raw_address(nft_item.owner_address)) << ","
+          << TO_SQL_OPTIONAL_STRING(raw_owner_address, txn) << ","
           << (nft_item.content ? txn.quote(content_to_json_string(nft_item.content.value())) : "NULL") << ","
           << nft_item.last_transaction_lt << ","
           << txn.quote(td::base64_encode(nft_item.code_hash.as_slice())) << ","

tondb-scanner/src/IndexData.h

@@ -478,7 +478,7 @@ struct NFTItemDataV2 {
   bool init;
   td::RefInt256 index;
   std::optional<block::StdAddress> collection_address;
-  block::StdAddress owner_address;
+  std::optional<block::StdAddress> owner_address;
   std::optional<std::map<std::string, std::string>> content;
   uint64_t last_transaction_lt;
   uint32_t last_transaction_now;

tondb-scanner/src/smc-interfaces/Tokens.cpp

@@ -268,13 +268,19 @@ void NftItemDetectorR::start_up() {
     data.collection_address = collection_address.move_as_ok();
   }
 
-  auto owner_address = convert::to_std_address(stack[3].as_slice());
-  if (owner_address.is_error()) {
-    promise_.set_error(td::Status::Error("get_nft_data address parsing failed"));
-    stop();
-    return;
+  auto owner_addr_cs = stack[3].as_slice();
+  if (owner_addr_cs->size() == 2 && owner_addr_cs->prefetch_ulong(2) == 0) {
+    // addr_none case
+    data.owner_address = std::nullopt;
+  } else {
+    auto owner_address = convert::to_std_address(owner_addr_cs);
+    if (owner_address.is_error()) {
+      promise_.set_error(owner_address.move_as_error_prefix("nft owner address parsing failed: "));
+      stop();
+      return;
+    }
+    data.owner_address = owner_address.move_as_ok();
   }
-  data.owner_address = owner_address.move_as_ok();
 
   if (!data.collection_address) {
     auto content = parse_token_data(stack[4].as_cell());

tondb-scanner/src/smc-interfaces/Tokens.h

@@ -71,7 +71,7 @@ class NftItemDetectorR: public td::actor::Actor {
     bool init;
     td::RefInt256 index;
     std::optional<block::StdAddress> collection_address;
-    block::StdAddress owner_address;
+    std::optional<block::StdAddress> owner_address;
     std::optional<std::map<std::string, std::string>> content;
   };