From 25e4a0e7f744561f289be52a840dfa8a294dab9d Mon Sep 17 00:00:00 2001
From: sl1depengwyn <max.pengwyn@gmail.com>
Date: Mon, 17 Oct 2022 23:25:20 +0300
Subject: [PATCH] Add verified contracts controller

---
 .../verified_contracts_controller.ex          | 72 +++++++++++++++++++
 .../lib/block_scout_web/web_router.ex         |  4 ++
 2 files changed, 76 insertions(+)
 create mode 100644 apps/block_scout_web/lib/block_scout_web/controllers/verified_contracts_controller.ex

diff --git a/apps/block_scout_web/lib/block_scout_web/controllers/verified_contracts_controller.ex b/apps/block_scout_web/lib/block_scout_web/controllers/verified_contracts_controller.ex
new file mode 100644
index 0000000000..a8b502a5a8
--- /dev/null
+++ b/apps/block_scout_web/lib/block_scout_web/controllers/verified_contracts_controller.ex
@@ -0,0 +1,72 @@
+defmodule BlockScoutWeb.VerifiedContractsController do
+  use BlockScoutWeb, :controller
+
+  import BlockScoutWeb.Chain,
+    only: [paging_options: 1, next_page_params: 3, split_list_by_page: 1, fetch_page_number: 1]
+
+
+  alias BlockScoutWeb.{Controller, VerifiedContractsView}
+  alias Explorer.{Chain, Market}
+  alias Explorer.ExchangeRates.Token
+  alias Phoenix.View
+
+  @necessity_by_association %{[address: :token] => :optional}
+
+  def index(conn, %{"type" => "JSON"} = params) do
+    full_options =
+      [necessity_by_association: @necessity_by_association]
+      |> Keyword.merge(paging_options(params))
+      |> Keyword.merge(current_filter(params))
+      |> Keyword.merge(search_query(params))
+      |> IO.inspect(label: "options")
+
+    verified_contracts_plus_one = Chain.verified_contracts(full_options)
+    {verified_contracts, next_page} = split_list_by_page(verified_contracts_plus_one)
+
+    items =
+      for contract <- verified_contracts do
+        token =
+          if contract.address.token,
+            do: Market.get_exchange_rate(contract.address.token.symbol),
+            else: Token.null()
+
+        View.render_to_string(VerifiedContractsView, "_contract.html",
+          contract: contract,
+          token: token
+        )
+      end
+
+    next_page_path =
+      case next_page_params(next_page, verified_contracts, params) do
+        nil -> nil
+        next_page_params -> verified_contracts_path(conn, :index, Map.delete(next_page_params, "type"))
+      end
+
+    json(conn, %{items: items, next_page_path: next_page_path})
+  end
+
+  def index(conn, params) do
+    render(conn, "index.html",
+      current_path: Controller.current_full_path(conn),
+      filter: params["filter"]
+    )
+  end
+
+  defp current_filter(%{"filter" => "solidity"}) do
+    [filter: :solidity]
+  end
+
+  defp current_filter(%{"filter" => "vyper"}) do
+    [filter: :vyper]
+  end
+
+  defp current_filter(_), do: []
+
+  defp search_query(%{"search" => ""}), do: []
+
+  defp search_query(%{"search" => search_string}) do
+    [search: search_string]
+  end
+
+  defp search_query(_), do: []
+end
diff --git a/apps/block_scout_web/lib/block_scout_web/web_router.ex b/apps/block_scout_web/lib/block_scout_web/web_router.ex
index 30de6760f1..e03bd10d43 100644
--- a/apps/block_scout_web/lib/block_scout_web/web_router.ex
+++ b/apps/block_scout_web/lib/block_scout_web/web_router.ex
@@ -121,6 +121,8 @@ defmodule BlockScoutWeb.WebRouter do
 
     resources("/recent-transactions", RecentTransactionsController, only: [:index])
 
+    resources("/verified-contracts", VerifiedContractsController, only: [:index])
+
     get("/txs", TransactionController, :index)
 
     resources "/tx", TransactionController, only: [:show] do
@@ -474,6 +476,8 @@ defmodule BlockScoutWeb.WebRouter do
 
     get("/search-results", SearchController, :search_results)
 
+    get("/search-verified-contracts", VerifiedContractsController, :search_verified_contracts)
+
     get("/csv-export", CsvExportController, :index)
 
     get("/transactions-csv", AddressTransactionController, :transactions_csv)