Merge pull request #7546 from blockscout/vb-fix-today-con-price-api-v2

API v2: fix today coin price (use in-memory or cached in DB value)

CHANGELOG.md

@@ -8,7 +8,8 @@
 
 ### Fixes
 
-- [#7545](https://github.com/blockscout/blockscout/pull/7545) - Check if cached exchange rate is empty before replacing DB value in stats API
+- [](https://github.com/blockscout/blockscout/pull/7546) - API v2: fix today coin price (use in-memory or cached in DB value)
+- [#7545](https://github.com/blockscout/blockscout/pull/7545) - API v2: Check if cached exchange rate is empty before replacing DB value in stats API
 - [#7516](https://github.com/blockscout/blockscout/pull/7516) - Fix shrinking logo in Safari
 
 ### Chore

apps/block_scout_web/lib/block_scout_web/controllers/api/v2/stats_controller.ex

@@ -46,7 +46,7 @@ defmodule BlockScoutWeb.API.V2.StatsController do
         "total_addresses" => @api_true |> Chain.address_estimated_count() |> to_string(),
         "total_transactions" => TransactionCache.estimated_count() |> to_string(),
         "average_block_time" => AverageBlockTime.average_block_time() |> Duration.to_milliseconds(),
-        "coin_price" => exchange_rate.usd_value,
+        "coin_price" => exchange_rate.usd_value || Market.get_native_coin_exchange_rate_from_db(),
         "total_gas_used" => GasUsage.total() |> to_string(),
         "transactions_today" => Enum.at(transaction_stats, 0).number_of_transactions |> to_string(),
         "gas_used_today" => Enum.at(transaction_stats, 0).gas_used,

apps/explorer/lib/explorer/market/market.ex

@@ -25,6 +25,24 @@ defmodule Explorer.Market do
     MarketHistoryCache.fetch()
   end
 
+  @doc """
+  Retrieves today's native coin exchange rate from the database.
+  """
+  @spec get_native_coin_exchange_rate_from_db() :: Token.t() | nil
+  def get_native_coin_exchange_rate_from_db do
+    today =
+      case fetch_recent_history() do
+        [today | _the_rest] -> today
+        _ -> nil
+      end
+
+    if today do
+      Map.get(today, :closing_price)
+    else
+      nil
+    end
+  end
+
   @doc false
   def bulk_insert_history(records) do
     records_without_zeroes =