Merge remote-tracking branch 'origin/carterqw2/query-pagination' into…

… dhutch/fixes

apps/block_scout_web/.iex.exs

@@ -10,6 +10,6 @@ defmodule Clabs.Debug do
 
   def token_tx_for_valora_address do
     {:ok,hsh} = Address.cast("0x6131a6d616a4be3737b38988847270a64bc10caa")
-    Explorer.GraphQL.token_txtransfers_query_for_address(hsh, 26)
+    Explorer.GraphQL.token_txtransfers_query_for_address(hsh, 26, 0)
   end
 end

apps/block_scout_web/lib/block_scout_web/resolvers/token_transfer_tx.ex

@@ -4,11 +4,16 @@ defmodule BlockScoutWeb.Resolvers.TokenTransferTx do
   alias Absinthe.Relay.Connection
   alias Explorer.{GraphQL, Repo}
 
-  def get_by(_, %{address_hash: address_hash, first: first} = args, _) do
+  def get_by(_, %{address_hash: address_hash, first: limit} = args, _) do
     connection_args = Map.take(args, [:after, :before, :first, :last])
 
+    offset = case Connection.offset(args) do
+      {:ok, offset} when is_integer(offset) -> offset
+      _ -> 0
+      end
+
     address_hash
-    |> GraphQL.token_txtransfers_query_for_address(first)
+    |> GraphQL.token_txtransfers_query_for_address(offset, limit)
     |> Connection.from_query(&Repo.all/1, connection_args, options(args))
   end
 

apps/explorer/lib/explorer/graphql.ex

@@ -232,8 +232,9 @@ defmodule Explorer.GraphQL do
     )
   end
 
-  def token_txtransfers_query_for_address(address_hash, first) do
-    tt_limit = first * 2
+  def token_txtransfers_query_for_address(address_hash, offset, limit) do
+    page = floor(offset/limit) + 1
+    growing_limit = limit * (page + 1)
 
     tokens =
       from(
@@ -254,8 +255,7 @@ defmodule Explorer.GraphQL do
           desc: tt.from_address_hash,
           desc: tt.to_address_hash
         ],
-        limit: ^tt_limit,
-        offset: 0
+        limit: ^growing_limit
       )
 
     from(
@@ -282,8 +282,7 @@ defmodule Explorer.GraphQL do
         input: tx.input,
         nonce: tx.nonce,
         block_number: tt.block_number
-      },
-      limit: ^first
+      }
     )
     |> order_by([transaction: t],
       desc: t.block_number,