Add API v2 output for Latest Confirmed Batches homepage section

apps/block_scout_web/lib/block_scout_web/api_router.ex

@@ -185,6 +185,7 @@ defmodule BlockScoutWeb.ApiRouter do
       get("/transactions", V2.MainPageController, :transactions)
       get("/transactions/watchlist", V2.MainPageController, :watchlist_transactions)
       get("/indexing-status", V2.MainPageController, :indexing_status)
+      get("/zkevm-confirmed-batches", V2.ZkevmController, :batches_confirmed)
     end
 
     scope "/stats" do

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

@@ -62,4 +62,17 @@ defmodule BlockScoutWeb.API.V2.ZkevmController do
     |> put_status(200)
     |> render(:zkevm_batches_count, %{count: count})
   end
+
+  def batches_confirmed(conn, _params) do
+    batches =
+      []
+      |> Keyword.put(:necessity_by_association, @batches_necessity_by_association)
+      |> Keyword.put(:api?, true)
+      |> Keyword.put(:confirmed?, true)
+      |> Chain.zkevm_batches()
+
+    conn
+    |> put_status(200)
+    |> render(:zkevm_batches, %{batches: batches})
+  end
 end

apps/block_scout_web/lib/block_scout_web/views/api/v2/zkevm_view.ex

@@ -34,7 +34,32 @@ defmodule BlockScoutWeb.API.V2.ZkevmView do
         batches: batches,
         next_page_params: next_page_params
       }) do
-    items =
+    %{
+      items: render_zkevm_batches(batches),
+      next_page_params: next_page_params
+    }
+  end
+
+  def render("zkevm_batches.json", %{batches: batches}) do
+    %{items: render_zkevm_batches(batches)}
+  end
+
+  def render("zkevm_batches_count.json", %{count: count}) do
+    count
+  end
+
+  defp batch_status(batch) do
+    sequence_id = Map.get(batch, :sequence_id)
+    verify_id = Map.get(batch, :verify_id)
+
+    cond do
+      is_nil(sequence_id) && is_nil(verify_id) -> "Unfinalized"
+      !is_nil(sequence_id) && is_nil(verify_id) -> "L1 Sequence Confirmed"
+      !is_nil(verify_id) -> "Finalized"
+    end
+  end
+
+  defp render_zkevm_batches(batches) do
     batches
     |> Enum.map(fn batch ->
       Task.async(fn ->
@@ -63,25 +88,5 @@ defmodule BlockScoutWeb.API.V2.ZkevmView do
     end)
     |> Task.yield_many(:infinity)
     |> Enum.map(fn {_task, {:ok, item}} -> item end)
-
-    %{
-      items: items,
-      next_page_params: next_page_params
-    }
-  end
-
-  def render("zkevm_batches_count.json", %{count: count}) do
-    count
-  end
-
-  defp batch_status(batch) do
-    sequence_id = Map.get(batch, :sequence_id)
-    verify_id = Map.get(batch, :verify_id)
-
-    cond do
-      is_nil(sequence_id) && is_nil(verify_id) -> "Unfinalized"
-      !is_nil(sequence_id) && is_nil(verify_id) -> "L1 Sequence Confirmed"
-      !is_nil(verify_id) -> "Finalized"
-    end
   end
 end

apps/explorer/lib/explorer/chain.ex

@@ -6424,7 +6424,6 @@ defmodule Explorer.Chain do
   end
 
   def zkevm_batches(options \\ []) do
-    paging_options = Keyword.get(options, :paging_options, @default_paging_options)
     necessity_by_association = Keyword.get(options, :necessity_by_association, %{})
 
     base_query =
@@ -6432,11 +6431,22 @@ defmodule Explorer.Chain do
         order_by: [desc: tb.number]
       )
 
+    query =
+      if Keyword.get(options, :confirmed?, false) do
+        base_query
+        |> join_associations(necessity_by_association)
+        |> where([tb], not is_nil(tb.sequence_id) and tb.sequence_id > 0)
+        |> limit(10)
+      else
+        paging_options = Keyword.get(options, :paging_options, @default_paging_options)
+
         base_query
         |> join_associations(necessity_by_association)
         |> page_zkevm_batches(paging_options)
         |> limit(^paging_options.page_size)
-    |> select_repo(options).all()
+      end
+
+    select_repo(options).all(query)
   end
 
   defp page_zkevm_batches(query, %PagingOptions{key: nil}), do: query