Use streaming overlay-log for system prune, move button to stopped-containers section

Co-authored-by: szaimen <42591237+szaimen@users.noreply.github.com>

php/src/Controller/DockerController.php

@@ -286,12 +286,23 @@ readonly class DockerController {
     }
 
     public function SystemPrune(Request $request, Response $response, array $args) : Response {
-        $results = $this->dockerActionManager->SystemPrune();
-        $body = $response->getBody();
-        $body->write(json_encode($results));
-        return $response
-            ->withStatus(200)
-            ->withHeader('Content-Type', 'application/json; charset=utf-8');
+        $nonbufResp = $response
+            ->withBody(new NonBufferedBody())
+            ->withHeader('Content-Type', 'text/html; charset=utf-8')
+            ->withHeader('X-Accel-Buffering', 'no')
+            ->withHeader('Cache-Control', 'no-cache');
+
+        $streamingResponseBody = $nonbufResp->getBody();
+        $streamingResponseBody->write($this->getStreamingResponseHtmlStart());
+
+        $addToStreamingResponseBody = function (string $message) use ($streamingResponseBody) : void {
+            $streamingResponseBody->write("<div>{$message}</div>");
+        };
+
+        $this->dockerActionManager->SystemPrune($addToStreamingResponseBody);
+
+        $streamingResponseBody->write($this->getStreamingResponseHtmlEnd());
+        return $nonbufResp;
     }
 
     public function stopTopContainer() : void {

php/src/Docker/DockerActionManager.php

@@ -984,22 +984,20 @@ readonly class DockerActionManager {
         }
     }
 
-    public function SystemPrune(): array {
-        $endpoints = [
-            // Remove stopped containers
-            'containers/prune',
-            // Remove unused images
-            'images/prune',
-            // Remove unused volumes
-            'volumes/prune',
-            // Remove unused networks
-            'networks/prune',
-            // Prune build cache
-            'build/prune',
+    public function SystemPrune(?\Closure $addToStreamingResponseBody = null): void {
+        $steps = [
+            'containers/prune' => 'Pruning stopped containers...',
+            'images/prune'     => 'Pruning unused images...',
+            'volumes/prune'    => 'Pruning unused volumes...',
+            'networks/prune'   => 'Pruning unused networks...',
+            'build/prune'      => 'Pruning build cache...',
         ];
 
-        $results = [];
-        foreach ($endpoints as $endpoint) {
+        foreach ($steps as $endpoint => $label) {
+            if ($addToStreamingResponseBody !== null) {
+                $addToStreamingResponseBody($label);
+            }
+
             // Special-case images prune to include the dangling filter as requested
             if ($endpoint === 'images/prune') {
                 $filters = json_encode(['dangling' => ['false']]);
@@ -1009,21 +1007,17 @@ readonly class DockerActionManager {
             }
 
             try {
-                $resp = $this->guzzleClient->post($url);
-                $body = (string)$resp->getBody();
-                $json = null;
-                try {
-                    $json = json_decode($body, true, 512, JSON_THROW_ON_ERROR);
-                } catch (\Throwable $e) {
-                    // Non-JSON body, keep raw
-                    $json = $body;
-                }
-                $results[$endpoint] = $json;
+                $this->guzzleClient->post($url);
             } catch (RequestException $e) {
                 error_log(sprintf('Docker prune (%s) failed: %s', $endpoint, $e->getMessage()));
-                $results[$endpoint] = ['error' => $e->getMessage()];
+                if ($addToStreamingResponseBody !== null) {
+                    $addToStreamingResponseBody(sprintf('Warning: %s failed: %s', $endpoint, $e->getMessage()));
+                }
                 // continue with next prune step
             }
         }
-        return $results;
+
+        if ($addToStreamingResponseBody !== null) {
+            $addToStreamingResponseBody('Docker system prune done.');
+        }
     }

php/templates/containers.twig

@@ -322,11 +322,6 @@
                                 <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">
                                 <input type="submit" value="Stop containers" />
                             </form>
-                            <form method="POST" action="api/docker/prune" class="xhr">
-                                <input type="hidden" name="{{csrf.keys.name}}" value="{{csrf.name}}">
-                                <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">
-                                <input type="submit" value="Run docker system prune" onclick="return confirm('Run docker system prune? This will remove unused images, containers and volumes. Continue?')" />
-                            </form>
                         {% endif %}
                     {% else %}
                         {% if isBackupOrRestoreRunning == true %}
@@ -372,6 +367,13 @@
                                     </form>
                                 {% endif %}
                             {% endif %}
+                            {% if was_start_button_clicked == true %}
+                                <form method="POST" action="api/docker/prune" target="overlay-log">
+                                    <input type="hidden" name="{{csrf.keys.name}}" value="{{csrf.name}}">
+                                    <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">
+                                    <input type="submit" value="Run docker system prune" onclick="return confirm('Run docker system prune? This will remove unused images, containers and volumes. Continue?')" />
+                                </form>
+                            {% endif %}
                         {% endif %}
                     {% endif %}