feat: add envelope capabilities and migrate from initialState

Add envelope availability to capabilities API:
- Add envelope.is-available capability
- Add EnvelopeService.isEnabled() method
- Remove envelope_enabled from initialState
- Update frontend to use capabilities instead of initialState

This provides a consistent way to check envelope feature availability
across the application using the Nextcloud capabilities API.

Signed-off-by: Vitor Mattos <[email protected]>

Author: vitormattos

lib/Capabilities.php

@@ -8,6 +8,7 @@
 
 namespace OCA\Libresign;
 
+use OCA\Libresign\Service\EnvelopeService;
 use OCA\Libresign\Service\SignatureTextService;
 use OCA\Libresign\Service\SignerElementsService;
 use OCP\App\IAppManager;
@@ -25,6 +26,7 @@ public function __construct(
 		protected SignerElementsService $signerElementsService,
 		protected SignatureTextService $signatureTextService,
 		protected IAppManager $appManager,
+		protected EnvelopeService $envelopeService,
 	) {
 	}
 
@@ -46,6 +48,9 @@ public function getCapabilities(): array {
 					'signature-width' => $this->signatureTextService->getSignatureWidth(),
 					'signature-height' => $this->signatureTextService->getSignatureHeight(),
 				],
+				'envelope' => [
+					'is-available' => $this->envelopeService->isEnabled(),
+				],
 			],
 			'version' => $this->appManager->getAppVersion('libresign'),
 		];

lib/Controller/PageController.php

@@ -93,8 +93,6 @@ public function index(): TemplateResponse {
 			$this->initialState->provideInitialState('can_request_sign', false);
 		}
 
-		$this->initialState->provideInitialState('envelope_enabled', $this->appConfig->getValueBool(Application::APP_ID, 'envelope_enabled', true));
-
 		$this->provideSignerSignatues();
 		$this->initialState->provideInitialState('identify_methods', $this->identifyMethodService->getIdentifyMethodsSettings());
 		$this->initialState->provideInitialState('signature_flow', $this->appConfig->getValueString(Application::APP_ID, 'signature_flow', \OCA\Libresign\Enum\SignatureFlow::NONE->value));

lib/Files/TemplateLoader.php

@@ -69,7 +69,5 @@ public function handle(Event $event): void {
 		} catch (LibresignException) {
 			$this->initialState->provideInitialState('can_request_sign', false);
 		}
-
-		$this->initialState->provideInitialState('envelope_enabled', $this->appConfig->getValueBool(Application::APP_ID, 'envelope_enabled', true));
 	}
 }

lib/ResponseDefinitions.php

@@ -274,6 +274,9 @@
  *             signature-width: float,
  *             signature-height: float,
  *         },
+ *         envelope: array{
+ *             is-available: bool,
+ *         },
  *     },
  *     version: string,
  * }

lib/Service/EnvelopeService.php

@@ -28,12 +28,15 @@ public function __construct(
 	) {
 	}
 
+	public function isEnabled(): bool {
+		return $this->appConfig->getValueBool(Application::APP_ID, 'envelope_enabled', true);
+	}
+
 	/**
 	 * @throws LibresignException
 	 */
 	public function validateEnvelopeConstraints(int $fileCount): void {
-		$isEnabled = $this->appConfig->getValueBool(Application::APP_ID, 'envelope_enabled', true);
-		if (!$isEnabled) {
+		if (!$this->isEnabled()) {
 			throw new LibresignException($this->l10n->t('Envelope feature is disabled'));
 		}
 

src/Components/Request/RequestPicker.vue

@@ -78,6 +78,7 @@ import PlusIcon from 'vue-material-design-icons/Plus.vue'
 import UploadIcon from 'vue-material-design-icons/Upload.vue'
 
 import axios from '@nextcloud/axios'
+import { getCapabilities } from '@nextcloud/capabilities'
 import { showError } from '@nextcloud/dialogs'
 import { FilePickerVue as FilePicker } from '@nextcloud/dialogs/filepicker.js'
 import { loadState } from '@nextcloud/initial-state'
@@ -134,10 +135,13 @@ export default {
 			loading: false,
 			openedMenu: false,
 			canRequestSign: loadState('libresign', 'can_request_sign', false),
-			envelopeEnabled: loadState('libresign', 'envelope_enabled', true),
 		}
 	},
 	computed: {
+		envelopeEnabled() {
+			const capabilities = getCapabilities()
+			return capabilities?.libresign?.config?.envelope?.['is-available'] === true
+		},
 		filePickerButtons() {
 			return [{
 				label: t('libresign', 'Choose'),