Tx in coin balance history

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## Current
 
 ### Features
+- [#3354](https://github.com/poanetwork/blockscout/pull/3354) - Tx hash in coin balance history
 - [#3333](https://github.com/poanetwork/blockscout/pull/3333), [#3337](https://github.com/poanetwork/blockscout/pull/3337) - Dark forest contract custom theme
 - [#3330](https://github.com/poanetwork/blockscout/pull/3330) - Caching of address transactions counter, remove query 10_000 rows limit
 

apps/block_scout_web/lib/block_scout_web/templates/address_coin_balance/_coin_balances.html.eex

@@ -1,15 +1,22 @@
 <div class="tile tile-type-coin-balance fade-up" data-test="coin_balance" data-block-number="<%= to_string(@coin_balance.block_number) %>">
   <div class="row justify-content align-items-center">
-    <div class="col-md-3 d-flex flex-column mt-3 mt-md-0">
+    <div class="col-md-6 d-flex flex-column mt-3 mt-md-0">
       <%= link(
             to: block_path(@conn, :show, @coin_balance.block_number),
             class: "tile-title-lg"
         ) do %>
         <%= gettext "Block" %> <%= @coin_balance.block_number %>
       <% end %>
+      <%= if @coin_balance.transaction_hash do %>
+        <%= link(
+              to: transaction_path(@conn, :show, @coin_balance.transaction_hash)
+          ) do %>
+          <%= @coin_balance.transaction_hash %>
+        <% end %>
+      <% end %>
       <span data-from-now="<%= @coin_balance.block_timestamp %>"></span>
     </div>
-    <div class="col-md-3 offset-md-3 d-flex flex-column text-md-right mt-3 mt-md-0">
+    <div class="col-md-3 d-flex flex-column text-md-right mt-3 mt-md-0">
       <span class="tile-title-lg align-bottom" data-balance-change-sign="<%= delta_sign(@coin_balance.delta) %>">
         <%= delta_arrow(@coin_balance.delta) %>
         <%= format_delta(@coin_balance.delta) %>

apps/explorer/lib/explorer/chain/address/coin_balance.ex

@@ -7,7 +7,7 @@ defmodule Explorer.Chain.Address.CoinBalance do
   use Explorer.Schema
 
   alias Explorer.PagingOptions
-  alias Explorer.Chain.{Address, Block, Hash, Wei}
+  alias Explorer.Chain.{Address, Block, Hash, Transaction, Wei}
   alias Explorer.Chain.Address.CoinBalance
 
   @optional_fields ~w(value value_fetched_at)a
@@ -42,6 +42,8 @@ defmodule Explorer.Chain.Address.CoinBalance do
     field(:value, Wei)
     field(:value_fetched_at, :utc_datetime_usec)
     field(:delta, Wei, virtual: true)
+    field(:transaction_hash, Hash.Full, virtual: true)
+    field(:transaction_value, Wei, virtual: true)
     field(:block_timestamp, :utc_datetime_usec, virtual: true)
 
     timestamps()
@@ -82,10 +84,18 @@ defmodule Explorer.Chain.Address.CoinBalance do
     query =
       from(
         cb in CoinBalance,
+        left_join: tx in Transaction,
+        on:
+          cb.block_number == tx.block_number and tx.value > ^0 and
+            (cb.address_hash == tx.to_address_hash or cb.address_hash == tx.from_address_hash),
         where: cb.address_hash == ^address_hash,
         where: not is_nil(cb.value),
         order_by: [desc: :block_number],
-        select_merge: %{delta: fragment("value - coalesce(lead(value, 1) over (order by block_number desc), 0)")}
+        select_merge: %{
+          delta: fragment("a0.value - coalesce(lead(a0.value, 1) over (order by a0.block_number desc), 0)"),
+          transaction_hash: tx.hash,
+          transaction_value: tx.value
+        }
       )
 
     from(balance in subquery(query),