Simplify render_claim_reward handling; remove UI freeze

apps/block_scout_web/assets/js/pages/stakes/claim_reward.js

@@ -33,14 +33,18 @@ export function openClaimRewardModal(store) {
 
     closeButton.hide()
     lockModal($modal)
-    $modal.on('shown.bs.modal', () => {
+    channel.on('claim_reward_pools', msg_pools => {
-      const timeout = 15000; // ms
+      channel.off('claim_reward_pools')
-      channel.push('render_claim_reward', { timeout: timeout }, timeout * 2).receive('ok', msg_pools => {
       closeButton.show()
       unlockModal($modal)
       clearInterval(dotCounterInterval)
       modalBody.html(msg_pools.html)
     })
+    $modal.on('shown.bs.modal', () => {
+      channel.push('render_claim_reward', {})
+    })
+    $modal.on('hidden.bs.modal', () => {
+      $(this).remove()
     })
 
     openModal($modal);

apps/block_scout_web/lib/block_scout_web/channels/stakes_channel.ex

@@ -11,8 +11,6 @@ defmodule BlockScoutWeb.StakesChannel do
   alias Explorer.Staking.ContractState
   alias Phoenix.View
 
-  import BlockScoutWeb.Gettext
-
   intercept(["staking_update"])
 
   def join("stakes:staking_update", _params, socket) do
@@ -236,16 +234,8 @@ defmodule BlockScoutWeb.StakesChannel do
     html = if data["preload"] do
       View.render_to_string(StakesView, "_stakes_modal_claim_reward.html", %{})
     else
-      task = Task.async(__MODULE__, :find_claim_reward_pools, [])
+      Task.async(__MODULE__, :find_claim_reward_pools, [socket])
-      case Task.yield(task, data["timeout"]) do
+      "OK"
-        {:ok, html} ->
-          html
-        {:exit, _} ->
-          gettext("<p>Unknown error. Please, contact Support.</p>")
-        nil ->
-          Task.shutdown(task, :brutal_kill)
-          gettext("<p>Unable to find the pools in a reasonable time. Please, contact Support.</p>")
-      end
     end
     result = %{html: html}
     {:reply, {:ok, result}, socket}
@@ -285,10 +275,13 @@ defmodule BlockScoutWeb.StakesChannel do
     {:noreply, socket}
   end
 
-  def find_claim_reward_pools() do
+  def find_claim_reward_pools(socket) do
     pools = []
     :timer.sleep(20000) # emulate working
-    View.render_to_string(StakesView, "_stakes_modal_claim_reward_content.html", pools: pools)
+    html = View.render_to_string(StakesView, "_stakes_modal_claim_reward_content.html", pools: pools)
+    push(socket, "claim_reward_pools", %{
+      html: html
+    })
   end
 
   defp push_staking_contract(socket) do

apps/block_scout_web/lib/block_scout_web/templates/stakes/_stakes_modal_claim_reward.html.eex

@@ -6,7 +6,7 @@
         <h5 class="modal-title"><%= gettext("Claim Reward") %></h5>
       </div>
       <div class="modal-body">
-        <p><%= gettext("Searching for pools you ever staked into. Please, wait...") %></p>
+        <p><%= gettext("Searching for pools you have ever staked into. Please, wait...") %></p>
       </div>
     </div>
   </div>