feat: add toggle-auto-sync resource action for Application (#21564) (#26477)

Signed-off-by: vikasrao23 <vikasrao23@users.noreply.github.com>
Co-authored-by: vikasrao23 <vikasrao23@users.noreply.github.com>

docs/operator-manual/resource_actions_builtin.md

@@ -6,6 +6,7 @@
 - [apps/StatefulSet/restart](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/apps/StatefulSet/actions/restart/action.lua)
 - [apps/StatefulSet/scale](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/apps/StatefulSet/actions/scale/action.lua)
 - [argoproj.io/AnalysisRun/terminate](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/argoproj.io/AnalysisRun/actions/terminate/action.lua)
+- [argoproj.io/Application/toggle-auto-sync](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/argoproj.io/Application/actions/toggle-auto-sync/action.lua)
 - [argoproj.io/CronWorkflow/create-workflow](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/argoproj.io/CronWorkflow/actions/create-workflow/action.lua)
 - [argoproj.io/Rollout/abort](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/argoproj.io/Rollout/actions/abort/action.lua)
 - [argoproj.io/Rollout/pause](https://github.com/argoproj/argo-cd/blob/master/resource_customizations/argoproj.io/Rollout/actions/pause/action.lua)

resource_customizations/argoproj.io/Application/actions/actions_test.yaml

@@ -0,0 +1,76 @@
+tests:
+  # Scenario 1: autosync enabled (enabled=nil, i.e. default) with prune+selfHeal -> disable (set enabled=false, preserve prune/selfHeal)
+  - given:
+      apiVersion: argoproj.io/v1alpha1
+      kind: Application
+      metadata:
+        name: test-app
+      spec:
+        syncPolicy:
+          automated:
+            prune: true
+            selfHeal: true
+    when:
+      action: toggle-auto-sync
+    expect:
+      spec:
+        syncPolicy:
+          automated:
+            prune: true
+            selfHeal: true
+            enabled: false
+
+  # Scenario 2: autosync disabled (enabled=false) with prune+selfHeal -> enable (set enabled=true, preserve prune/selfHeal)
+  - given:
+      apiVersion: argoproj.io/v1alpha1
+      kind: Application
+      metadata:
+        name: test-app
+      spec:
+        syncPolicy:
+          automated:
+            prune: true
+            selfHeal: true
+            enabled: false
+    when:
+      action: toggle-auto-sync
+    expect:
+      spec:
+        syncPolicy:
+          automated:
+            prune: true
+            selfHeal: true
+            enabled: true
+
+  # Scenario 3: autosync explicitly enabled (enabled=true) -> disable
+  - given:
+      apiVersion: argoproj.io/v1alpha1
+      kind: Application
+      metadata:
+        name: test-app
+      spec:
+        syncPolicy:
+          automated:
+            enabled: true
+    when:
+      action: toggle-auto-sync
+    expect:
+      spec:
+        syncPolicy:
+          automated:
+            enabled: false
+
+  # Scenario 4: no automated block (autosync off) -> enable (create automated with enabled=true)
+  - given:
+      apiVersion: argoproj.io/v1alpha1
+      kind: Application
+      metadata:
+        name: test-app
+      spec: {}
+    when:
+      action: toggle-auto-sync
+    expect:
+      spec:
+        syncPolicy:
+          automated:
+            enabled: true

resource_customizations/argoproj.io/Application/actions/discovery.lua

@@ -0,0 +1,11 @@
+local actions = {}
+local autoSyncEnabled = false
+if obj.spec ~= nil and obj.spec.syncPolicy ~= nil and obj.spec.syncPolicy.automated ~= nil then
+    local enabled = obj.spec.syncPolicy.automated.enabled
+    autoSyncEnabled = (enabled == true or enabled == nil)
+end
+actions["toggle-auto-sync"] = {
+    ["displayName"] = autoSyncEnabled and "Disable Auto-Sync" or "Enable Auto-Sync",
+    ["disabled"] = false
+}
+return actions

resource_customizations/argoproj.io/Application/actions/toggle-auto-sync/action.lua

@@ -0,0 +1,23 @@
+if obj.spec == nil then
+    obj.spec = {}
+end
+if obj.spec.syncPolicy == nil then
+    obj.spec.syncPolicy = {}
+end
+
+local automated = obj.spec.syncPolicy.automated
+local isEnabled = automated ~= nil and (automated.enabled == true or automated.enabled == nil)
+
+if isEnabled then
+    -- Currently ENABLED (enabled=true or enabled=nil): disable it
+    automated.enabled = false
+else
+    -- Currently DISABLED (automated absent or enabled=false): enable it
+    if automated == nil then
+        obj.spec.syncPolicy.automated = { enabled = true }
+    else
+        automated.enabled = true
+    end
+end
+
+return obj

server/application/application.go

@@ -2540,6 +2540,11 @@ func (s *Server) getUnstructuredLiveResourceOrApp(ctx context.Context, rbacReque
 		if err != nil {
 			return nil, nil, nil, nil, err
 		}
+		app.SetGroupVersionKind(schema.GroupVersionKind{
+			Group:   applicationType.Group,
+			Version: v1alpha1.SchemeGroupVersion.Version,
+			Kind:    applicationType.ApplicationKind,
+		})
 		err = s.enf.EnforceErr(ctx.Value("claims"), rbac.ResourceApplications, rbacRequest, app.RBACName(s.ns))
 		if err != nil {
 			return nil, nil, nil, nil, err