Search: Fix empty folder details for nested folder items (#76504)

* Introduce dashboard.folder_uid column

* Add data migration

* Search: Fix empty folder details for nested folders

* Set `dashboard.folder_uid` and update tests

* Add unique index

* lint

Ignore cyclomatic complexity of func
`(*DashboardServiceImpl).BuildSaveDashboardCommand

* Fix search by folder UID

pkg/api/dashboard_test.go

@@ -394,6 +394,7 @@ func TestDashboardAPIEndpoint(t *testing.T) {
 		// This tests that a valid request returns correct response
 		t.Run("Given a correct request for creating a dashboard", func(t *testing.T) {
 			const folderID int64 = 3
+			folderUID := "Folder"
 			const dashID int64 = 2
 
 			cmd := dashboards.SaveDashboardCommand{
@@ -404,15 +405,19 @@ func TestDashboardAPIEndpoint(t *testing.T) {
 				}),
 				Overwrite: true,
 				FolderID:  folderID,
+				FolderUID: folderUID,
 				IsFolder:  false,
 				Message:   "msg",
 			}
 
 			dashboardService := dashboards.NewFakeDashboardService(t)
 			dashboardService.On("SaveDashboard", mock.Anything, mock.AnythingOfType("*dashboards.SaveDashboardDTO"), mock.AnythingOfType("bool")).
-				Return(&dashboards.Dashboard{ID: dashID, UID: "uid", Title: "Dash", Slug: "dash", Version: 2}, nil)
+				Return(&dashboards.Dashboard{ID: dashID, UID: "uid", Title: "Dash", Slug: "dash", Version: 2, FolderUID: folderUID, FolderID: folderID}, nil)
+			mockFolderService := &foldertest.FakeService{
+				ExpectedFolder: &folder.Folder{ID: 1, UID: folderUID, Title: "Folder"},
+			}
 
-			postDashboardScenario(t, "When calling POST on", "/api/dashboards", "/api/dashboards", cmd, dashboardService, nil, func(sc *scenarioContext) {
+			postDashboardScenario(t, "When calling POST on", "/api/dashboards", "/api/dashboards", cmd, dashboardService, mockFolderService, func(sc *scenarioContext) {
 				callPostDashboardShouldReturnSuccess(sc)
 
 				result := sc.ToJSON()
@@ -664,6 +669,12 @@ func TestDashboardAPIEndpoint(t *testing.T) {
 				Data:        fakeDash.Data,
 			}}
 		mockSQLStore := dbtest.NewFakeDB()
+		origNewGuardian := guardian.New
+		guardian.MockDashboardGuardian(&guardian.FakeDashboardGuardian{CanSaveValue: true})
+		t.Cleanup(func() {
+			guardian.New = origNewGuardian
+		})
+
 		restoreDashboardVersionScenario(t, "When calling POST on", "/api/dashboards/id/1/restore",
 			"/api/dashboards/id/:dashboardId/restore", dashboardService, fakeDashboardVersionService, cmd, func(sc *scenarioContext) {
 				sc.dashboardVersionService = fakeDashboardVersionService
@@ -1084,6 +1095,9 @@ func restoreDashboardVersionScenario(t *testing.T, desc string, url string, rout
 	cmd dtos.RestoreDashboardVersionCommand, fn scenarioFunc, sqlStore db.DB) {
 	t.Run(fmt.Sprintf("%s %s", desc, url), func(t *testing.T) {
 		cfg := setting.NewCfg()
+		folderSvc := foldertest.NewFakeService()
+		folderSvc.ExpectedFolder = &folder.Folder{}
+
 		hs := HTTPServer{
 			Cfg:                     cfg,
 			ProvisioningService:     provisioning.NewProvisioningServiceMock(context.Background()),
@@ -1097,6 +1111,7 @@ func restoreDashboardVersionScenario(t *testing.T, desc string, url string, rout
 			dashboardVersionService: fakeDashboardVersionService,
 			Kinds:                   corekind.NewBase(nil),
 			accesscontrolService:    actest.FakeService{},
+			folderService:           folderSvc,
 		}
 
 		sc := setupScenarioContext(t, url)