Merge pull request #5487 from blockscout/np-fix-contract-constructor-args-ui

Fix array displaying in decoded constructor args

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 ### Fixes
 - [#5488](https://github.com/blockscout/blockscout/pull/5488) - Split long contract output to multiple lines
+- [#5487](https://github.com/blockscout/blockscout/pull/5487) - Fix array displaying in decoded constructor args
 - [#5455](https://github.com/blockscout/blockscout/pull/5455) - Fix unverified_smart_contract function: add md5 of bytecode to the changeset
 - [#5454](https://github.com/blockscout/blockscout/pull/5454) - Docker: Fix the qemu-x86_64 signal 11 error on Apple Silicon
 - [#5443](https://github.com/blockscout/blockscout/pull/5443) - Geth: display tx revert reason

apps/block_scout_web/lib/block_scout_web/views/address_contract_view.ex

@@ -33,8 +33,26 @@ defmodule BlockScoutWeb.AddressContractView do
       |> decode_data(input_types)
       |> Enum.zip(constructor_abi["inputs"])
       |> Enum.reduce({0, "#{contract.constructor_arguments}\n\n"}, fn {val, %{"type" => type}}, {count, acc} ->
-        formatted_val =
+        formatted_val = val_to_string(val, type, conn)
+
+        {count + 1, "#{acc}Arg [#{count}] (<b>#{type}</b>) : #{formatted_val}\n"}
+      end)
+
+    result
+  rescue
+    _ -> contract.constructor_arguments
+  end
+
+  defp val_to_string(val, type, conn) do
     cond do
+      type =~ "[]" ->
+        if is_list(val) or is_tuple(val) do
+          "[" <>
+            Enum.map_join(val, ", ", fn el -> val_to_string(el, String.replace_suffix(type, "[]", ""), conn) end) <> "]"
+        else
+          to_string(val)
+        end
+
       type =~ "address" ->
         address_hash = "0x" <> Base.encode16(val, case: :lower)
 
@@ -46,15 +64,8 @@ defmodule BlockScoutWeb.AddressContractView do
         Base.encode16(val, case: :lower)
 
       true ->
-              val
+        to_string(val)
     end
-
-        {count + 1, "#{acc}Arg [#{count}] (<b>#{type}</b>) : #{formatted_val}\n"}
-      end)
-
-    result
-  rescue
-    _ -> contract.constructor_arguments
   end
 
   defp get_address(address_hash) do