MDL-81714 grades: Display "Run now" button for admins in task indicator

admin/tool/componentlibrary/content/moodle/components/task-indicator.md

@@ -91,3 +91,29 @@ if ($taskindicator->has_task_record()) {
 
 If the optional `redirecturl` parameter is set when creating the indicator, the page will automatically reload or redirect to
 this URL when the progress bar completes.
+
+While the task is still queued, admins will see a "Run now" button below the progress bar. This is designed for convenience if
+a user is blocked on a job and needs the task run immediately. It will run the specific instance of the task tracked by the
+indicator.
+
+{{< mustache template="core/task_indicator" >}}
+{
+    "heading": "Regrade in progress",
+    "icon": {
+        "attributes": [
+            {"name": "src", "value": "/pix/i/timer.svg"},
+            {"name": "alt", "value": ""}
+        ]
+    },
+    "message": "Grades are being recalculated due to recent changes.",
+    "progress": {
+        "id": "progressbar_test",
+        "message": "Task pending",
+        "idnumber": "progressbar_test",
+        "width": "500",
+        "value": "0"
+    },
+    "runurl": "http://example.com/runtask.php?id=1",
+    "runlabel": "Run now"
+}
+{{< /mustache >}}

grade/tests/behat/grade_async_regrade.feature

@@ -87,6 +87,7 @@ Feature: Asynchronous regrade on a large course
     When I am on the "Test course 1" "grades > Grader report > View" page logged in as teacher1
     And I should see "Grades are being recalculated due to recent changes."
     And I should see "Task pending"
+    And I should not see "Run now"
     And I should see "0.0%"
     And "user-grades" "table" should not exist
     When I run all adhoc tasks
@@ -100,3 +101,17 @@ Feature: Asynchronous regrade on a large course
     And I set the field "Search users" to "Student 1"
     And "user-grades" "table" should exist
     And "40.00" "text" should exist in the "[email protected]" "table_row"
+
+  Scenario: Admin should see a "Run now" button that disappears once the task starts running
+    When I am on the "Test course 1" "grades > Grader report > View" page logged in as admin
+    And I should see "Grades are being recalculated due to recent changes."
+    And I should see "Task pending"
+    And I should see "Run now"
+    And I should see "0.0%"
+    And "user-grades" "table" should not exist
+    When I run all adhoc tasks
+    # Progress bar should update.
+    Then I should not see "Task pending"
+    And I should not see "Run now"
+    And I should see "Recalculating grades"
+    And I should see "100%"

lib/amd/src/task_indicator.js

@@ -35,7 +35,13 @@ export default class {
      */
     static init(id, redirectUrl) {
         document.getElementById(id).addEventListener('update', (event) => {
-            if (event.detail.percent === 100) {
+            // Once progress has started, remove the run link.
+            const runlink = document.querySelector(`.runlink[data-idnumber=${id}]`);
+            if (runlink && event.detail.percent > 0) {
+                runlink.remove();
+            }
+            // Once the progress bar completes, redirect the page.
+            if (redirectUrl !== '' && event.detail.percent === 100) {
                 window.setTimeout(() => window.location.assign(redirectUrl), 2000);
             }
         });

lib/classes/output/task_indicator.php

@@ -16,9 +16,11 @@
 
 namespace core\output;
 
+use core\plugin_manager;
 use core\task\adhoc_task;
 use core\task\stored_progress_task_trait;
 use core\url;
+use core\context\system;
 use renderer_base;
 use stdClass;
 use renderable;
@@ -27,6 +29,11 @@
 /**
  * Indicator for displaying status and progress of a background task
  *
+ * This will display a section containing an icon, heading and message describing the background task being performed,
+ * as well as a progress bar that is updated as the task progresses. Optionally, it will redirect to a given URL (or reload
+ * the current one) when the task completes. If the task is still waiting in the queue, an admin viewing the indicator
+ * will also see a "Run now" button.
+ *
  * @package   core
  * @copyright 2024 onwards Catalyst IT EU {@link https://catalyst-eu.net}
  * @author    Mark Johnson <[email protected]>
@@ -39,6 +46,12 @@ class task_indicator implements renderable, templatable {
     /** @var ?stored_progress_bar $progressbar */
     protected ?stored_progress_bar $progressbar;
 
+    /** @var ?url $runurl The URL to manually run the task. */
+    protected ?url $runurl = null;
+
+    /** @var string $runlabel Label for the link to run the task. */
+    protected string $runlabel = '';
+
     /**
      * Find the task record, and get the progress bar object.
      *
@@ -73,6 +86,15 @@ public function __construct(
             $idnumber = stored_progress_bar::convert_to_idnumber($this->task::class, $this->task->get_id());
             $this->progressbar = stored_progress_bar::get_by_idnumber($idnumber);
         }
+        // As long as the tool_task plugin hasn't been removed, allow admins to trigger the task manually if it's not running yet.
+        if (
+            array_key_exists('task', plugin_manager::instance()->get_present_plugins('tool'))
+            && ($this->has_task_record() && is_null($this->taskrecord->timestarted))
+            && has_capability('moodle/site:config', system::instance())
+        ) {
+            $this->runurl = new url('/admin/tool/task/run_adhoctasks.php', ['id' => $this->taskrecord->id]);
+            $this->runlabel = get_string('runnow', 'tool_task');
+        }
     }
 
     /**
@@ -92,8 +114,10 @@ public function export_for_template(renderer_base $output): array {
             $export['message'] = $this->message;
             $export['progress'] = $this->progressbar->export_for_template($output);
             $export['icon'] = $this->icon ? $this->icon->export_for_template($output) : '';
-            $export['redirecturl'] = $this->redirecturl->out();
+            $export['redirecturl'] = $this->redirecturl?->out();
             $export['extraclasses'] = implode(' ', $this->extraclasses);
+            $export['runurl'] = $this->runurl?->out();
+            $export['runlabel'] = $this->runlabel;
             $this->progressbar->init_js();
         }
         return $export;

lib/templates/task_indicator.mustache

@@ -39,23 +39,28 @@
     }
 }}
 <div class="task-indicator {{extraclasses}}">
-    {{#icon}}
-        <div class="text-center">
-            {{>core/pix_icon}}
-        </div>
-    {{/icon}}
-    <h3 class="text-center">{{heading}}</h3>
-    <p class="text-center">{{message}}</p>
+    <div class="text-center">
+        {{#icon}}
+            <div>
+                {{>core/pix_icon}}
+            </div>
+        {{/icon}}
+        <h3>{{heading}}</h3>
+        <p>{{message}}</p>
+    </div>
     {{#progress}}
         {{>core/progress_bar}}
     {{/progress}}
-</div>
+    {{#runurl}}
+        <p class="text-center">
+            <a class="runlink btn btn-primary" href="{{runurl}}" data-idnumber="{{progress.idnumber}}">{{runlabel}}</a>
+        </p>
+    {{/runurl}}
 
-{{#redirecturl}}
-    {{#js}}
-        require(['core/task_indicator'], function(TaskIndicator) {
-            TaskIndicator.init('{{progress.idnumber}}', '{{redirecturl}}');
-        });
-    {{/js}}
-{{/redirecturl}}
+</div>
 
+{{#js}}
+    require(['core/task_indicator'], function(TaskIndicator) {
+        TaskIndicator.init('{{progress.idnumber}}', '{{redirecturl}}');
+    });
+{{/js}}