Hide "We are indexing this chain right now. Some of the counts may be…

… inaccurate" banner if no txs in blockchain

CHANGELOG.md

@@ -18,6 +18,7 @@
 - [#2470](https://github.com/poanetwork/blockscout/pull/2470) - Allow Realtime Fetcher to wait for small skips
 
 ### Fixes
+- [#2793](https://github.com/poanetwork/blockscout/pull/2793) - Hide "We are indexing this chain right now. Some of the counts may be inaccurate" banner if no txs in blockchain
 - [#2779](https://github.com/poanetwork/blockscout/pull/2779) - fix fetching `latin1` encoded data
 - [#2783](https://github.com/poanetwork/blockscout/pull/2783) - Fix stuck value and ticker on the token page
 - [#2781](https://github.com/poanetwork/blockscout/pull/2781) - optimize txlist json rpc

apps/explorer/lib/explorer/chain.ex

@@ -715,19 +715,28 @@ defmodule Explorer.Chain do
   """
   @spec finished_indexing?() :: boolean()
   def finished_indexing? do
-    min_block_number_transaction = Repo.aggregate(Transaction, :min, :block_number)
-
-    if min_block_number_transaction do
+    transaction_exists =
       Transaction
-      |> where([t], t.block_number == ^min_block_number_transaction and is_nil(t.internal_transactions_indexed_at))
       |> limit(1)
       |> Repo.one()
-      |> case do
-        nil -> true
-        _ -> false
+
+    min_block_number_transaction = Repo.aggregate(Transaction, :min, :block_number)
+
+    if transaction_exists do
+      if min_block_number_transaction do
+        Transaction
+        |> where([t], t.block_number == ^min_block_number_transaction and is_nil(t.internal_transactions_indexed_at))
+        |> limit(1)
+        |> Repo.one()
+        |> case do
+          nil -> true
+          _ -> false
+        end
+      else
+        false
       end
     else
-      false
+      true
     end
   end
 

apps/explorer/test/explorer/chain_test.exs

@@ -972,6 +972,12 @@ defmodule Explorer.ChainTest do
       assert Chain.finished_indexing?()
     end
 
+    test "finished indexing (no txs)" do
+      block = insert(:block, number: 1)
+
+      assert Chain.finished_indexing?()
+    end
+
     test "not finished indexing" do
       block = insert(:block, number: 1)