feat: decoding candidates for unverified contracts

apps/block_scout_web/lib/block_scout_web/templates/transaction/_decoded_input.html.eex

@@ -3,67 +3,34 @@
     <h1 class="card-title"><%= gettext "Input" %> </h1>
     <!-- Input -->
     <%= case @decoded_input_data do %>
-    <% {:error, :contract_not_verified} -> %>
+    <% {:error, :contract_not_verified, candidates} -> %>
     <div class="alert alert-info">
-      <%= gettext "To see decoded input data, the contract must be verified." %>
+      <%= gettext "To see accurate decoded input data, the contract must be verified." %>
       <%= case @transaction do %>
         <% %{to_address: %{hash: hash}} -> %>
           <%= gettext "Verify the contract " %><a href="<%= address_verify_contract_path(@conn, :new, hash)%>"><%= gettext "here" %></a>
         <% _ -> %>
           <%= nil %>
       <% end %>
     </div>
-    <% {:ok, method_id, text, mapping} -> %>
-    <table summary="<%= gettext "Transaction Info" %>" class="table thead-light table-bordered table-responsive transaction-info-table">
-      <tr>
-        <td><%= gettext "Method Id" %></td>
-        <td colspan="3"><code>0x<%= method_id %></code></td>
-      </tr>
-      <tr>
-        <td>Call</td>
-        <td colspan="3"><code><%= text %></code></td>
-      </tr>
-    </table>
+    <%= unless Enum.empty?(candidates) do %>
+      <h3><%= gettext "Potential matches from our contract method database:" %></h3>
+      <%= gettext "IMPORTANT: This information is a best guess based on similar functions from other verified contracts." %>
+      <%= gettext "To have guaranteed accuracy, use the link above to verify the contract's source code." %>
 
-    <table summary="<%= gettext "Transaction Inputs" %>" class="table thead-light table-bordered table-responsive">
-      <tr>
-        <th scope="col"></th>
-        <th scope="col"><%= gettext "Name" %></th>
-        <th scope="col"><%= gettext "Type" %></th>
-        <th scope="col"><%= gettext "Data" %></th>
-      <tr>
-        <%= for {name, type, value} <- mapping do %>
-            <tr>
-              <th scope="row">
-                <%= case BlockScoutWeb.ABIEncodedValueView.copy_text(type, value) do %>
-                  <% :error -> %>
-                    <%= nil %>
-                  <% copy_text -> %>
-                    <button type="button" class="copy icon-link" data-toggle="tooltip" data-placement="top" data-clipboard-text="<%= copy_text %>" aria-label="<%= gettext "Copy Value" %>">
-                      <i class="fas fa-clone"></i>
-                    </button>
-                 <% end %>
-              </th>
-              <td><%= name %></td>
-              <td><%= type %></td>
-              <td>
-                <%= case BlockScoutWeb.ABIEncodedValueView.value_html(type, value) do %>
-                  <% :error -> %>
-                    <div class="alert alert-danger">
-                      <%= gettext "Error rendering value" %>
-                    </div>
-                  <% value -> %>
-                    <pre class="transaction-input-text tile"><code><%= value %></code></pre>
-                <% end %>
+      <%= for {:ok, method_id, text, mapping} <- candidates do %>
+        <hr>
+        <h3><%= text %>: </h3>
 
-              </td>
-            </tr>
-            <% end %>
-    </table>
+        <%= render(BlockScoutWeb.TransactionView, "_decoded_input_body.html", method_id: method_id, text: text, mapping: mapping) %>
+      <% end %>
+    <% end %>
+    <% {:ok, method_id, text, mapping} -> %>
+      <%= render(BlockScoutWeb.TransactionView, "_decoded_input_body.html", method_id: method_id, text: text, mapping: mapping) %>
     <% _ -> %>
         <div class="alert alert-danger">
           <%= gettext "Failed to decode input data." %>
         </div>
-        <% end %>
+    <% end %>
   </div>
 </div>

apps/block_scout_web/lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex

@@ -0,0 +1,47 @@
+<table summary="<%= gettext "Transaction Info" %>" class="table thead-light table-bordered table-responsive transaction-info-table">
+  <tr>
+  <td><%= gettext "Method Id" %></td>
+  <td colspan="3"><code>0x<%= @method_id %></code></td>
+  </tr>
+  <tr>
+  <td>Call</td>
+  <td colspan="3"><code><%= @text %></code></td>
+  </tr>
+</table>
+
+<%= unless Enum.empty?(@mapping) do %>
+  <table summary="<%= gettext "Transaction Inputs" %>" class="table thead-light table-bordered table-responsive">
+    <tr>
+    <th scope="col"></th>
+    <th scope="col"><%= gettext "Name" %></th>
+    <th scope="col"><%= gettext "Type" %></th>
+    <th scope="col"><%= gettext "Data" %></th>
+    <tr>
+    <%= for {name, type, value} <- @mapping do %>
+      <tr>
+        <th scope="row">
+          <%= case BlockScoutWeb.ABIEncodedValueView.copy_text(type, value) do %>
+            <% :error -> %>
+              <%= nil %>
+            <% copy_text -> %>
+              <button type="button" class="copy icon-link" data-toggle="tooltip" data-placement="top" data-clipboard-text="<%= copy_text %>" aria-label="<%= gettext "Copy Value" %>">
+                <i class="fas fa-clone"></i>
+              </button>
+          <% end %>
+        </th>
+        <td><%= name %></td>
+        <td><%= type %></td>
+        <td>
+          <%= case BlockScoutWeb.ABIEncodedValueView.value_html(type, value) do %>
+            <% :error -> %>
+              <div class="alert alert-danger">
+                <%= gettext "Error rendering value" %>
+              </div>
+            <% value -> %>
+              <pre class="transaction-input-text tile"><code><%= value %></code></pre>
+            <% end %>
+        </td>
+      </tr>
+    <% end %>
+  </table>
+<% end %>

apps/block_scout_web/lib/block_scout_web/templates/transaction/overview.html.eex

@@ -172,7 +172,7 @@
     </div>
   </div>
 
-  <%= unless should_decode?(@transaction) do %>
+  <%= unless skip_decoding?(@transaction) do %>
     <div class="row">
       <div class="col-md-12">
         <%= render BlockScoutWeb.TransactionView, "_decoded_input.html", Map.put(assigns, :decoded_input_data, decoded_input_data) %>

apps/block_scout_web/lib/block_scout_web/views/transaction_view.ex

@@ -138,7 +138,7 @@ defmodule BlockScoutWeb.TransactionView do
     Cldr.Number.to_string!(gas)
   end
 
-  def should_decode?(transaction) do
+  def skip_decoding?(transaction) do
     contract_creation?(transaction) || value_transfer?(transaction)
   end
 

apps/block_scout_web/priv/gettext/default.pot

@@ -338,7 +338,7 @@ msgid "Curl"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:33
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:18
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:60
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:118
 msgid "Data"
@@ -574,7 +574,7 @@ msgstr ""
 
 #, elixir-format
 #: lib/block_scout_web/templates/api_docs/_action_tile.html.eex:29
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:31
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:16
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:57
 msgid "Name"
 msgstr ""
@@ -1305,29 +1305,28 @@ msgid "Indexed?"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:32
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:17
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:58
 msgid "Type"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:19
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:3
 msgid "Method Id"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:8
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:31
 msgid "To see decoded input data, the contract must be verified."
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:17
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:1
 msgid "Transaction Info"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:28
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:13
 msgid "Transaction Inputs"
 msgstr ""
 
@@ -1344,17 +1343,17 @@ msgid "here"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:65
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:32
 msgid "Failed to decode input data."
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:53
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:38
 msgid "Error rendering value"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:42
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:27
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:69
 msgid "Copy Value"
 msgstr ""
@@ -1492,6 +1491,26 @@ msgstr ""
 msgid "Uncle Reward"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:18
+msgid "IMPORTANT: This information is a best guess based on similar functions from other verified contracts."
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:17
+msgid "Potential matches from our contract method database:"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:19
+msgid "To have guaranteed accuracy, use the link above to verify the contract's source code."
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:8
+msgid "To see accurate decoded input data, the contract must be verified."
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/transaction/_emission_reward_tile.html.eex:5
 msgid "Emission Contract"

apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po

@@ -338,7 +338,7 @@ msgid "Curl"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:33
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:18
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:60
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:118
 msgid "Data"
@@ -574,7 +574,7 @@ msgstr ""
 
 #, elixir-format
 #: lib/block_scout_web/templates/api_docs/_action_tile.html.eex:29
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:31
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:16
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:57
 msgid "Name"
 msgstr ""
@@ -1305,29 +1305,28 @@ msgid "Indexed?"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:32
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:17
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:58
 msgid "Type"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:19
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:3
 msgid "Method Id"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:8
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:31
 msgid "To see decoded input data, the contract must be verified."
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:17
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:1
 msgid "Transaction Info"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:28
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:13
 msgid "Transaction Inputs"
 msgstr ""
 
@@ -1344,17 +1343,17 @@ msgid "here"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:65
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:32
 msgid "Failed to decode input data."
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:53
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:38
 msgid "Error rendering value"
 msgstr ""
 
 #, elixir-format
-#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:42
+#: lib/block_scout_web/templates/transaction/_decoded_input_body.html.eex:27
 #: lib/block_scout_web/templates/transaction_log/index.html.eex:69
 msgid "Copy Value"
 msgstr ""
@@ -1492,6 +1491,26 @@ msgstr ""
 msgid "Uncle Reward"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:18
+msgid "IMPORTANT: This information is a best guess based on similar functions from other verified contracts."
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:17
+msgid "Potential matches from our contract method database:"
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:19
+msgid "To have guaranteed accuracy, use the link above to verify the contract's source code."
+msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/transaction/_decoded_input.html.eex:8
+msgid "To see accurate decoded input data, the contract must be verified."
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/transaction/_emission_reward_tile.html.eex:5
 msgid "Emission Contract"