feat: Add declarative settings

Signed-off-by: jld3103 <jld3103yt@gmail.com>
Signed-off-by: Julien Veyssier <julien-nc@posteo.net>
Signed-off-by: Andrey Borysenko <andrey18106x@gmail.com>

23 files changed, 1736 insertions, 40 deletions

diff --git a/apps/settings/appinfo/routes.php b/apps/settings/appinfo/routes.php
index e8a3869fe11..7bb946d1934 100644
--- a/apps/settings/appinfo/routes.php
+++ b/apps/settings/appinfo/routes.php
@@ -81,5 +81,9 @@ return [
 		['name' => 'WebAuthn#deleteRegistration', 'url' => '/settings/api/personal/webauthn/registration/{id}', 'verb' => 'DELETE' , 'root' => ''],
 
 		['name' => 'Reasons#getPdf', 'url' => '/settings/download/reasons', 'verb' => 'GET', 'root' => ''],
-	]
+	],
+	'ocs' => [
+		['name' => 'DeclarativeSettings#setValue', 'url' => '/settings/api/declarative/value', 'verb' => 'POST', 'root' => ''],
+		['name' => 'DeclarativeSettings#getForms', 'url' => '/settings/api/declarative/forms', 'verb' => 'GET', 'root' => ''],
+	],
 ];
diff --git a/apps/settings/composer/composer/autoload_classmap.php b/apps/settings/composer/composer/autoload_classmap.php
index c3cf0763ed9..b9709c8ad28 100644
--- a/apps/settings/composer/composer/autoload_classmap.php
+++ b/apps/settings/composer/composer/autoload_classmap.php
@@ -27,6 +27,7 @@ return array(
     'OCA\\Settings\\Controller\\ChangePasswordController' => $baseDir . '/../lib/Controller/ChangePasswordController.php',
     'OCA\\Settings\\Controller\\CheckSetupController' => $baseDir . '/../lib/Controller/CheckSetupController.php',
     'OCA\\Settings\\Controller\\CommonSettingsTrait' => $baseDir . '/../lib/Controller/CommonSettingsTrait.php',
+    'OCA\\Settings\\Controller\\DeclarativeSettingsController' => $baseDir . '/../lib/Controller/DeclarativeSettingsController.php',
     'OCA\\Settings\\Controller\\HelpController' => $baseDir . '/../lib/Controller/HelpController.php',
     'OCA\\Settings\\Controller\\LogSettingsController' => $baseDir . '/../lib/Controller/LogSettingsController.php',
     'OCA\\Settings\\Controller\\MailSettingsController' => $baseDir . '/../lib/Controller/MailSettingsController.php',
@@ -43,6 +44,7 @@ return array(
     'OCA\\Settings\\Listener\\UserRemovedFromGroupActivityListener' => $baseDir . '/../lib/Listener/UserRemovedFromGroupActivityListener.php',
     'OCA\\Settings\\Mailer\\NewUserMailHelper' => $baseDir . '/../lib/Mailer/NewUserMailHelper.php',
     'OCA\\Settings\\Middleware\\SubadminMiddleware' => $baseDir . '/../lib/Middleware/SubadminMiddleware.php',
+    'OCA\\Settings\\ResponseDefinitions' => $baseDir . '/../lib/ResponseDefinitions.php',
     'OCA\\Settings\\Search\\AppSearch' => $baseDir . '/../lib/Search/AppSearch.php',
     'OCA\\Settings\\Search\\SectionSearch' => $baseDir . '/../lib/Search/SectionSearch.php',
     'OCA\\Settings\\Search\\UserSearch' => $baseDir . '/../lib/Search/UserSearch.php',
diff --git a/apps/settings/composer/composer/autoload_static.php b/apps/settings/composer/composer/autoload_static.php
index 88f71b026f5..67808ad23f2 100644
--- a/apps/settings/composer/composer/autoload_static.php
+++ b/apps/settings/composer/composer/autoload_static.php
@@ -42,6 +42,7 @@ class ComposerStaticInitSettings
         'OCA\\Settings\\Controller\\ChangePasswordController' => __DIR__ . '/..' . '/../lib/Controller/ChangePasswordController.php',
         'OCA\\Settings\\Controller\\CheckSetupController' => __DIR__ . '/..' . '/../lib/Controller/CheckSetupController.php',
         'OCA\\Settings\\Controller\\CommonSettingsTrait' => __DIR__ . '/..' . '/../lib/Controller/CommonSettingsTrait.php',
+        'OCA\\Settings\\Controller\\DeclarativeSettingsController' => __DIR__ . '/..' . '/../lib/Controller/DeclarativeSettingsController.php',
         'OCA\\Settings\\Controller\\HelpController' => __DIR__ . '/..' . '/../lib/Controller/HelpController.php',
         'OCA\\Settings\\Controller\\LogSettingsController' => __DIR__ . '/..' . '/../lib/Controller/LogSettingsController.php',
         'OCA\\Settings\\Controller\\MailSettingsController' => __DIR__ . '/..' . '/../lib/Controller/MailSettingsController.php',
@@ -58,6 +59,7 @@ class ComposerStaticInitSettings
         'OCA\\Settings\\Listener\\UserRemovedFromGroupActivityListener' => __DIR__ . '/..' . '/../lib/Listener/UserRemovedFromGroupActivityListener.php',
         'OCA\\Settings\\Mailer\\NewUserMailHelper' => __DIR__ . '/..' . '/../lib/Mailer/NewUserMailHelper.php',
         'OCA\\Settings\\Middleware\\SubadminMiddleware' => __DIR__ . '/..' . '/../lib/Middleware/SubadminMiddleware.php',
+        'OCA\\Settings\\ResponseDefinitions' => __DIR__ . '/..' . '/../lib/ResponseDefinitions.php',
         'OCA\\Settings\\Search\\AppSearch' => __DIR__ . '/..' . '/../lib/Search/AppSearch.php',
         'OCA\\Settings\\Search\\SectionSearch' => __DIR__ . '/..' . '/../lib/Search/SectionSearch.php',
         'OCA\\Settings\\Search\\UserSearch' => __DIR__ . '/..' . '/../lib/Search/UserSearch.php',
diff --git a/apps/settings/composer/composer/installed.php b/apps/settings/composer/composer/installed.php
index 1a66c7f2416..d2b87e1bdfd 100644
--- a/apps/settings/composer/composer/installed.php
+++ b/apps/settings/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'b1797842784b250fb01ed5e3bf130705eb94751b',
+        'reference' => '4ff660ca2e0baa02440ba07296ed7e75fa544c0e',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'b1797842784b250fb01ed5e3bf130705eb94751b',
+            'reference' => '4ff660ca2e0baa02440ba07296ed7e75fa544c0e',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/settings/lib/Controller/AdminSettingsController.php b/apps/settings/lib/Controller/AdminSettingsController.php
index 7b0313c9fa7..8da03607a79 100644
--- a/apps/settings/lib/Controller/AdminSettingsController.php
+++ b/apps/settings/lib/Controller/AdminSettingsController.php
@@ -30,12 +30,14 @@ use OC\AppFramework\Middleware\Security\Exceptions\NotAdminException;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\Attribute\OpenAPI;
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Services\IInitialState;
 use OCP\Group\ISubAdmin;
 use OCP\IGroupManager;
 use OCP\INavigationManager;
 use OCP\IRequest;
 use OCP\IUser;
 use OCP\IUserSession;
+use OCP\Settings\IDeclarativeManager;
 use OCP\Settings\IManager as ISettingsManager;
 use OCP\Template;
 
@@ -50,7 +52,9 @@ class AdminSettingsController extends Controller {
 		ISettingsManager $settingsManager,
 		IUserSession $userSession,
 		IGroupManager $groupManager,
-		ISubAdmin $subAdmin
+		ISubAdmin $subAdmin,
+		IDeclarativeManager $declarativeSettingsManager,
+		IInitialState $initialState,
 	) {
 		parent::__construct($appName, $request);
 		$this->navigationManager = $navigationManager;
@@ -58,6 +62,8 @@ class AdminSettingsController extends Controller {
 		$this->userSession = $userSession;
 		$this->groupManager = $groupManager;
 		$this->subAdmin = $subAdmin;
+		$this->declarativeSettingsManager = $declarativeSettingsManager;
+		$this->initialState = $initialState;
 	}
 
 	/**
@@ -80,7 +86,8 @@ class AdminSettingsController extends Controller {
 		$user = $this->userSession->getUser();
 		$isSubAdmin = !$this->groupManager->isAdmin($user->getUID()) && $this->subAdmin->isSubAdmin($user);
 		$settings = $this->settingsManager->getAllowedAdminSettings($section, $user);
-		if (empty($settings)) {
+		$declarativeFormIDs = $this->declarativeSettingsManager->getFormIDs($user, 'admin', $section);
+		if (empty($settings) && empty($declarativeFormIDs)) {
 			throw new NotAdminException("Logged in user doesn't have permission to access these settings.");
 		}
 		$formatted = $this->formatSettings($settings);
diff --git a/apps/settings/lib/Controller/CommonSettingsTrait.php b/apps/settings/lib/Controller/CommonSettingsTrait.php
index 5d683d7d824..ab51deadfc3 100644
--- a/apps/settings/lib/Controller/CommonSettingsTrait.php
+++ b/apps/settings/lib/Controller/CommonSettingsTrait.php
@@ -26,17 +26,26 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  */
+
 namespace OCA\Settings\Controller;
 
+use OCA\Settings\AppInfo\Application;
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Services\IInitialState;
 use OCP\Group\ISubAdmin;
 use OCP\IGroupManager;
 use OCP\INavigationManager;
 use OCP\IUserSession;
+use OCP\Settings\IDeclarativeManager;
+use OCP\Settings\IDeclarativeSettingsForm;
 use OCP\Settings\IIconSection;
 use OCP\Settings\IManager as ISettingsManager;
 use OCP\Settings\ISettings;
+use OCP\Util;
 
+/**
+ * @psalm-import-type DeclarativeSettingsFormField from IDeclarativeSettingsForm
+ */
 trait CommonSettingsTrait {
 
 	/** @var ISettingsManager */
@@ -54,28 +63,26 @@ trait CommonSettingsTrait {
 	/** @var ISubAdmin */
 	private $subAdmin;
 
+	private IDeclarativeManager $declarativeSettingsManager;
+
+	/** @var IInitialState */
+	private $initialState;
+
 	/**
 	 * @return array{forms: array{personal: array, admin: array}}
 	 */
 	private function getNavigationParameters(string $currentType, string $currentSection): array {
-		$templateParameters = [
-			'personal' => $this->formatPersonalSections($currentType, $currentSection),
-			'admin' => []
-		];
-
-		$templateParameters['admin'] = $this->formatAdminSections(
-			$currentType,
-			$currentSection
-		);
-
 		return [
-			'forms' => $templateParameters
+			'forms' => [
+				'personal' => $this->formatPersonalSections($currentType, $currentSection),
+				'admin' => $this->formatAdminSections($currentType, $currentSection),
+			],
 		];
 	}
 
 	/**
 	 * @param IIconSection[][] $sections
-	 * @psam-param 'admin'|'personal' $type
+	 * @psalm-param 'admin'|'personal' $type
 	 * @return list<array{anchor: string, section-name: string, active: bool, icon: string}>
 	 */
 	protected function formatSections(array $sections, string $currentSection, string $type, string $currentType): array {
@@ -87,7 +94,11 @@ trait CommonSettingsTrait {
 				} elseif ($type === 'personal') {
 					$settings = $this->settingsManager->getPersonalSettings($section->getID());
 				}
-				if (empty($settings) && !($section->getID() === 'additional' && count(\OC_App::getForms('admin')) > 0)) {
+
+				/** @psalm-suppress PossiblyNullArgument */
+				$declarativeFormIDs = $this->declarativeSettingsManager->getFormIDs($this->userSession->getUser(), $type, $section->getID());
+
+				if (empty($settings) && empty($declarativeFormIDs) && !($section->getID() === 'additional' && count(\OC_App::getForms('admin')) > 0)) {
 					continue;
 				}
 
@@ -107,14 +118,14 @@ trait CommonSettingsTrait {
 		return $templateParameters;
 	}
 
-	protected function formatPersonalSections(string $currentType, string $currentSections): array {
+	protected function formatPersonalSections(string $currentType, string $currentSection): array {
 		$sections = $this->settingsManager->getPersonalSections();
-		return $this->formatSections($sections, $currentSections, 'personal', $currentType);
+		return $this->formatSections($sections, $currentSection, 'personal', $currentType);
 	}
 
-	protected function formatAdminSections(string $currentType, string $currentSections): array {
+	protected function formatAdminSections(string $currentType, string $currentSection): array {
 		$sections = $this->settingsManager->getAdminSections();
-		return $this->formatSections($sections, $currentSections, 'admin', $currentType);
+		return $this->formatSections($sections, $currentSection, 'admin', $currentType);
 	}
 
 	/**
@@ -133,6 +144,9 @@ trait CommonSettingsTrait {
 		return ['content' => $html];
 	}
 
+	/**
+	 * @psalm-param 'admin'|'personal' $type
+	 */
 	private function getIndexResponse(string $type, string $section): TemplateResponse {
 		if ($type === 'personal') {
 			if ($section === 'theming') {
@@ -144,9 +158,24 @@ trait CommonSettingsTrait {
 			$this->navigationManager->setActiveEntry('admin_settings');
 		}
 
+		$this->declarativeSettingsManager->loadSchemas();
+
 		$templateParams = [];
 		$templateParams = array_merge($templateParams, $this->getNavigationParameters($type, $section));
 		$templateParams = array_merge($templateParams, $this->getSettings($section));
+
+		/** @psalm-suppress PossiblyNullArgument */
+		$declarativeFormIDs = $this->declarativeSettingsManager->getFormIDs($this->userSession->getUser(), $type, $section);
+		if (!empty($declarativeFormIDs)) {
+			foreach ($declarativeFormIDs as $app => $ids) {
+				/** @psalm-suppress PossiblyUndefinedArrayOffset */
+				$templateParams['content'] .= join(array_map(fn (string $id) => '<div id="' . $app . '_' . $id . '"></div>', $ids));
+			}
+			Util::addScript(Application::APP_ID, 'declarative-settings-forms');
+			/** @psalm-suppress PossiblyNullArgument */
+			$this->initialState->provideInitialState('declarative-settings-forms', $this->declarativeSettingsManager->getFormsWithValues($this->userSession->getUser(), $type, $section));
+		}
+
 		$activeSection = $this->settingsManager->getSection($type, $section);
 		if ($activeSection) {
 			$templateParams['pageTitle'] = $activeSection->getName();
diff --git a/apps/settings/lib/Controller/DeclarativeSettingsController.php b/apps/settings/lib/Controller/DeclarativeSettingsController.php
new file mode 100644
index 00000000000..71347066290
--- /dev/null
+++ b/apps/settings/lib/Controller/DeclarativeSettingsController.php
@@ -0,0 +1,105 @@
+<?php
+/**
+ * @copyright Copyright (c) 2023 Kate Döen <kate.doeen@nextcloud.com>
+ *
+ * @author Kate Döen <kate.doeen@nextcloud.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Settings\Controller;
+
+use Exception;
+use OC\AppFramework\Middleware\Security\Exceptions\NotAdminException;
+use OC\AppFramework\Middleware\Security\Exceptions\NotLoggedInException;
+use OCA\Settings\ResponseDefinitions;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\Attribute\NoAdminRequired;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\OCS\OCSBadRequestException;
+use OCP\AppFramework\OCSController;
+use OCP\IRequest;
+use OCP\IUserSession;
+use OCP\Settings\IDeclarativeManager;
+use Psr\Log\LoggerInterface;
+
+/**
+ * @psalm-import-type SettingsDeclarativeForm from ResponseDefinitions
+ */
+class DeclarativeSettingsController extends OCSController {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private IUserSession $userSession,
+		private IDeclarativeManager $declarativeManager,
+		private LoggerInterface $logger,
+	) {
+		parent::__construct($appName, $request);
+	}
+
+	/**
+	 * Sets a declarative settings value
+	 *
+	 * @param string $app ID of the app
+	 * @param string $formId ID of the form
+	 * @param string $fieldId ID of the field
+	 * @param mixed $value Value to be saved
+	 * @return DataResponse<Http::STATUS_OK, null, array{}>
+	 * @throws NotLoggedInException Not logged in or not an admin user
+	 * @throws NotAdminException Not logged in or not an admin user
+	 * @throws OCSBadRequestException Invalid arguments to save value
+	 *
+	 * 200: Value set successfully
+	 */
+	#[NoAdminRequired]
+	public function setValue(string $app, string $formId, string $fieldId, mixed $value): DataResponse {
+		$user = $this->userSession->getUser();
+		if ($user === null) {
+			throw new NotLoggedInException();
+		}
+
+		try {
+			$this->declarativeManager->loadSchemas();
+			$this->declarativeManager->setValue($user, $app, $formId, $fieldId, $value);
+			return new DataResponse(null);
+		} catch (NotAdminException $e) {
+			throw $e;
+		} catch (Exception $e) {
+			$this->logger->error('Failed to set declarative settings value: ' . $e->getMessage());
+			throw new OCSBadRequestException();
+		}
+	}
+
+	/**
+	 * Gets all declarative forms with the values prefilled.
+	 *
+	 * @return DataResponse<Http::STATUS_OK, list<SettingsDeclarativeForm>, array{}>
+	 * @throws NotLoggedInException
+	 * @NoSubAdminRequired
+	 *
+	 * 200: Forms returned
+	 */
+	#[NoAdminRequired]
+	public function getForms(): DataResponse {
+		$user = $this->userSession->getUser();
+		if ($user === null) {
+			throw new NotLoggedInException();
+		}
+		$this->declarativeManager->loadSchemas();
+		return new DataResponse($this->declarativeManager->getFormsWithValues($user, null, null));
+	}
+}
diff --git a/apps/settings/lib/Controller/PersonalSettingsController.php b/apps/settings/lib/Controller/PersonalSettingsController.php
index 7d219f5c165..57da74cd99a 100644
--- a/apps/settings/lib/Controller/PersonalSettingsController.php
+++ b/apps/settings/lib/Controller/PersonalSettingsController.php
@@ -29,11 +29,13 @@ namespace OCA\Settings\Controller;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\Attribute\OpenAPI;
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Services\IInitialState;
 use OCP\Group\ISubAdmin;
 use OCP\IGroupManager;
 use OCP\INavigationManager;
 use OCP\IRequest;
 use OCP\IUserSession;
+use OCP\Settings\IDeclarativeManager;
 use OCP\Settings\IManager as ISettingsManager;
 use OCP\Template;
 
@@ -48,7 +50,9 @@ class PersonalSettingsController extends Controller {
 		ISettingsManager $settingsManager,
 		IUserSession $userSession,
 		IGroupManager $groupManager,
-		ISubAdmin $subAdmin
+		ISubAdmin $subAdmin,
+		IDeclarativeManager $declarativeSettingsManager,
+		IInitialState $initialState,
 	) {
 		parent::__construct($appName, $request);
 		$this->navigationManager = $navigationManager;
@@ -56,6 +60,8 @@ class PersonalSettingsController extends Controller {
 		$this->userSession = $userSession;
 		$this->subAdmin = $subAdmin;
 		$this->groupManager = $groupManager;
+		$this->declarativeSettingsManager = $declarativeSettingsManager;
+		$this->initialState = $initialState;
 	}
 
 	/**
diff --git a/apps/settings/lib/ResponseDefinitions.php b/apps/settings/lib/ResponseDefinitions.php
new file mode 100644
index 00000000000..1887a04de08
--- /dev/null
+++ b/apps/settings/lib/ResponseDefinitions.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2024 Kate Döen <kate.doeen@nextcloud.com>
+ *
+ * @author Kate Döen <kate.doeen@nextcloud.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Settings;
+
+/**
+ * @psalm-type SettingsDeclarativeFormField = array{
+ *   id: string,
+ *   title: string,
+ *   description?: string,
+ *   type: 'text'|'password'|'email'|'tel'|'url'|'number'|'checkbox'|'multi-checkbox'|'radio'|'select'|'multi-select',
+ *   placeholder?: string,
+ *   label?: string,
+ *   default: mixed,
+ *   options?: list<string|array{name: string, value: mixed}>,
+ *   value: string|int|float|bool|list<string>,
+ * }
+ *
+ * @psalm-type SettingsDeclarativeForm = array{
+ *   id: string,
+ *   priority: int,
+ *   section_type: 'admin'|'personal',
+ *   section_id: string,
+ *   storage_type: 'internal'|'external',
+ *   title: string,
+ *   description?: string,
+ *   doc_url?: string,
+ *   app: string,
+ *   fields: list<SettingsDeclarativeFormField>,
+ * }
+ */
+class ResponseDefinitions {
+}
diff --git a/apps/settings/openapi-administration.json b/apps/settings/openapi-administration.json
new file mode 100644
index 00000000000..5d39237779a
--- /dev/null
+++ b/apps/settings/openapi-administration.json
@@ -0,0 +1,65 @@
+{
+    "openapi": "3.0.3",
+    "info": {
+        "title": "settings-administration",
+        "version": "0.0.1",
+        "description": "Nextcloud settings",
+        "license": {
+            "name": "agpl"
+        }
+    },
+    "components": {
+        "securitySchemes": {
+            "basic_auth": {
+                "type": "http",
+                "scheme": "basic"
+            },
+            "bearer_auth": {
+                "type": "http",
+                "scheme": "bearer"
+            }
+        },
+        "schemas": {}
+    },
+    "paths": {
+        "/index.php/settings/admin/log/download": {
+            "get": {
+                "operationId": "log_settings-download",
+                "summary": "download logfile",
+                "description": "This endpoint requires admin access",
+                "tags": [
+                    "log_settings"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Logfile returned",
+                        "headers": {
+                            "Content-Disposition": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        },
+                        "content": {
+                            "application/octet-stream": {
+                                "schema": {
+                                    "type": "string",
+                                    "format": "binary"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "tags": []
+}
\ No newline at end of file
diff --git a/apps/settings/openapi-full.json b/apps/settings/openapi-full.json
new file mode 100644
index 00000000000..99a2b8b97c1
--- /dev/null
+++ b/apps/settings/openapi-full.json
@@ -0,0 +1,433 @@
+{
+    "openapi": "3.0.3",
+    "info": {
+        "title": "settings-full",
+        "version": "0.0.1",
+        "description": "Nextcloud settings",
+        "license": {
+            "name": "agpl"
+        }
+    },
+    "components": {
+        "securitySchemes": {
+            "basic_auth": {
+                "type": "http",
+                "scheme": "basic"
+            },
+            "bearer_auth": {
+                "type": "http",
+                "scheme": "bearer"
+            }
+        },
+        "schemas": {
+            "DeclarativeForm": {
+                "type": "object",
+                "required": [
+                    "id",
+                    "priority",
+                    "section_type",
+                    "section_id",
+                    "storage_type",
+                    "title",
+                    "app",
+                    "fields"
+                ],
+                "properties": {
+                    "id": {
+                        "type": "string"
+                    },
+                    "priority": {
+                        "type": "integer",
+                        "format": "int64"
+                    },
+                    "section_type": {
+                        "type": "string",
+                        "enum": [
+                            "admin",
+                            "personal"
+                        ]
+                    },
+                    "section_id": {
+                        "type": "string"
+                    },
+                    "storage_type": {
+                        "type": "string",
+                        "enum": [
+                            "internal",
+                            "external"
+                        ]
+                    },
+                    "title": {
+                        "type": "string"
+                    },
+                    "description": {
+                        "type": "string"
+                    },
+                    "doc_url": {
+                        "type": "string"
+                    },
+                    "app": {
+                        "type": "string"
+                    },
+                    "fields": {
+                        "type": "array",
+                        "items": {
+                            "$ref": "#/components/schemas/DeclarativeFormField"
+                        }
+                    }
+                }
+            },
+            "DeclarativeFormField": {
+                "type": "object",
+                "required": [
+                    "id",
+                    "title",
+                    "type",
+                    "default",
+                    "value"
+                ],
+                "properties": {
+                    "id": {
+                        "type": "string"
+                    },
+                    "title": {
+                        "type": "string"
+                    },
+                    "description": {
+                        "type": "string"
+                    },
+                    "type": {
+                        "type": "string",
+                        "enum": [
+                            "text",
+                            "password",
+                            "email",
+                            "tel",
+                            "url",
+                            "number",
+                            "checkbox",
+                            "multi-checkbox",
+                            "radio",
+                            "select",
+                            "multi-select"
+                        ]
+                    },
+                    "placeholder": {
+                        "type": "string"
+                    },
+                    "label": {
+                        "type": "string"
+                    },
+                    "default": {
+                        "type": "object"
+                    },
+                    "options": {
+                        "type": "array",
+                        "items": {
+                            "oneOf": [
+                                {
+                                    "type": "string"
+                                },
+                                {
+                                    "type": "object",
+                                    "required": [
+                                        "name",
+                                        "value"
+                                    ],
+                                    "properties": {
+                                        "name": {
+                                            "type": "string"
+                                        },
+                                        "value": {
+                                            "type": "object"
+                                        }
+                                    }
+                                }
+                            ]
+                        }
+                    },
+                    "value": {
+                        "oneOf": [
+                            {
+                                "type": "string"
+                            },
+                            {
+                                "type": "integer",
+                                "format": "int64"
+                            },
+                            {
+                                "type": "number",
+                                "format": "float"
+                            },
+                            {
+                                "type": "boolean"
+                            },
+                            {
+                                "type": "array",
+                                "items": {
+                                    "type": "string"
+                                }
+                            }
+                        ]
+                    }
+                }
+            },
+            "OCSMeta": {
+                "type": "object",
+                "required": [
+                    "status",
+                    "statuscode"
+                ],
+                "properties": {
+                    "status": {
+                        "type": "string"
+                    },
+                    "statuscode": {
+                        "type": "integer"
+                    },
+                    "message": {
+                        "type": "string"
+                    },
+                    "totalitems": {
+                        "type": "string"
+                    },
+                    "itemsperpage": {
+                        "type": "string"
+                    }
+                }
+            }
+        }
+    },
+    "paths": {
+        "/index.php/settings/admin/log/download": {
+            "get": {
+                "operationId": "log_settings-download",
+                "summary": "download logfile",
+                "description": "This endpoint requires admin access",
+                "tags": [
+                    "log_settings"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Logfile returned",
+                        "headers": {
+                            "Content-Disposition": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        },
+                        "content": {
+                            "application/octet-stream": {
+                                "schema": {
+                                    "type": "string",
+                                    "format": "binary"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        },
+        "/ocs/v2.php/settings/api/declarative/value": {
+            "post": {
+                "operationId": "declarative_settings-set-value",
+                "summary": "Sets a declarative settings value",
+                "tags": [
+                    "declarative_settings"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "parameters": [
+                    {
+                        "name": "app",
+                        "in": "query",
+                        "description": "ID of the app",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "formId",
+                        "in": "query",
+                        "description": "ID of the form",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "fieldId",
+                        "in": "query",
+                        "description": "ID of the field",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "value",
+                        "in": "query",
+                        "description": "Value to be saved",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "OCS-APIRequest",
+                        "in": "header",
+                        "description": "Required to be true for the API request to pass",
+                        "required": true,
+                        "schema": {
+                            "type": "boolean",
+                            "default": true
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Value set successfully",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "nullable": true
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "500": {
+                        "description": "Not logged in or not an admin user",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        }
+                    },
+                    "400": {
+                        "description": "Invalid arguments to save value",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        },
+        "/ocs/v2.php/settings/api/declarative/forms": {
+            "get": {
+                "operationId": "declarative_settings-get-forms",
+                "summary": "Gets all declarative forms with the values prefilled.",
+                "tags": [
+                    "declarative_settings"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "parameters": [
+                    {
+                        "name": "OCS-APIRequest",
+                        "in": "header",
+                        "description": "Required to be true for the API request to pass",
+                        "required": true,
+                        "schema": {
+                            "type": "boolean",
+                            "default": true
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Forms returned",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "type": "array",
+                                                    "items": {
+                                                        "$ref": "#/components/schemas/DeclarativeForm"
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "500": {
+                        "description": "",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "tags": []
+}
\ No newline at end of file
diff --git a/apps/settings/openapi.json b/apps/settings/openapi.json
index 217a0fae9f7..e9591eaf346 100644
--- a/apps/settings/openapi.json
+++ b/apps/settings/openapi.json
@@ -19,16 +19,192 @@
                 "scheme": "bearer"
             }
         },
-        "schemas": {}
+        "schemas": {
+            "DeclarativeForm": {
+                "type": "object",
+                "required": [
+                    "id",
+                    "priority",
+                    "section_type",
+                    "section_id",
+                    "storage_type",
+                    "title",
+                    "app",
+                    "fields"
+                ],
+                "properties": {
+                    "id": {
+                        "type": "string"
+                    },
+                    "priority": {
+                        "type": "integer",
+                        "format": "int64"
+                    },
+                    "section_type": {
+                        "type": "string",
+                        "enum": [
+                            "admin",
+                            "personal"
+                        ]
+                    },
+                    "section_id": {
+                        "type": "string"
+                    },
+                    "storage_type": {
+                        "type": "string",
+                        "enum": [
+                            "internal",
+                            "external"
+                        ]
+                    },
+                    "title": {
+                        "type": "string"
+                    },
+                    "description": {
+                        "type": "string"
+                    },
+                    "doc_url": {
+                        "type": "string"
+                    },
+                    "app": {
+                        "type": "string"
+                    },
+                    "fields": {
+                        "type": "array",
+                        "items": {
+                            "$ref": "#/components/schemas/DeclarativeFormField"
+                        }
+                    }
+                }
+            },
+            "DeclarativeFormField": {
+                "type": "object",
+                "required": [
+                    "id",
+                    "title",
+                    "type",
+                    "default",
+                    "value"
+                ],
+                "properties": {
+                    "id": {
+                        "type": "string"
+                    },
+                    "title": {
+                        "type": "string"
+                    },
+                    "description": {
+                        "type": "string"
+                    },
+                    "type": {
+                        "type": "string",
+                        "enum": [
+                            "text",
+                            "password",
+                            "email",
+                            "tel",
+                            "url",
+                            "number",
+                            "checkbox",
+                            "multi-checkbox",
+                            "radio",
+                            "select",
+                            "multi-select"
+                        ]
+                    },
+                    "placeholder": {
+                        "type": "string"
+                    },
+                    "label": {
+                        "type": "string"
+                    },
+                    "default": {
+                        "type": "object"
+                    },
+                    "options": {
+                        "type": "array",
+                        "items": {
+                            "oneOf": [
+                                {
+                                    "type": "string"
+                                },
+                                {
+                                    "type": "object",
+                                    "required": [
+                                        "name",
+                                        "value"
+                                    ],
+                                    "properties": {
+                                        "name": {
+                                            "type": "string"
+                                        },
+                                        "value": {
+                                            "type": "object"
+                                        }
+                                    }
+                                }
+                            ]
+                        }
+                    },
+                    "value": {
+                        "oneOf": [
+                            {
+                                "type": "string"
+                            },
+                            {
+                                "type": "integer",
+                                "format": "int64"
+                            },
+                            {
+                                "type": "number",
+                                "format": "float"
+                            },
+                            {
+                                "type": "boolean"
+                            },
+                            {
+                                "type": "array",
+                                "items": {
+                                    "type": "string"
+                                }
+                            }
+                        ]
+                    }
+                }
+            },
+            "OCSMeta": {
+                "type": "object",
+                "required": [
+                    "status",
+                    "statuscode"
+                ],
+                "properties": {
+                    "status": {
+                        "type": "string"
+                    },
+                    "statuscode": {
+                        "type": "integer"
+                    },
+                    "message": {
+                        "type": "string"
+                    },
+                    "totalitems": {
+                        "type": "string"
+                    },
+                    "itemsperpage": {
+                        "type": "string"
+                    }
+                }
+            }
+        }
     },
     "paths": {
-        "/index.php/settings/admin/log/download": {
-            "get": {
-                "operationId": "log_settings-download",
-                "summary": "download logfile",
-                "description": "This endpoint requires admin access",
+        "/ocs/v2.php/settings/api/declarative/value": {
+            "post": {
+                "operationId": "declarative_settings-set-value",
+                "summary": "Sets a declarative settings value",
                 "tags": [
-                    "log_settings"
+                    "declarative_settings"
                 ],
                 "security": [
                     {
@@ -38,21 +214,175 @@
                         "basic_auth": []
                     }
                 ],
+                "parameters": [
+                    {
+                        "name": "app",
+                        "in": "query",
+                        "description": "ID of the app",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "formId",
+                        "in": "query",
+                        "description": "ID of the form",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "fieldId",
+                        "in": "query",
+                        "description": "ID of the field",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "value",
+                        "in": "query",
+                        "description": "Value to be saved",
+                        "required": true,
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "OCS-APIRequest",
+                        "in": "header",
+                        "description": "Required to be true for the API request to pass",
+                        "required": true,
+                        "schema": {
+                            "type": "boolean",
+                            "default": true
+                        }
+                    }
+                ],
                 "responses": {
                     "200": {
-                        "description": "Logfile returned",
-                        "headers": {
-                            "Content-Disposition": {
+                        "description": "Value set successfully",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "nullable": true
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "500": {
+                        "description": "Not logged in or not an admin user",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "type": "string"
+                                }
+                            }
+                        }
+                    },
+                    "400": {
+                        "description": "Invalid arguments to save value",
+                        "content": {
+                            "text/plain": {
                                 "schema": {
                                     "type": "string"
                                 }
                             }
-                        },
+                        }
+                    }
+                }
+            }
+        },
+        "/ocs/v2.php/settings/api/declarative/forms": {
+            "get": {
+                "operationId": "declarative_settings-get-forms",
+                "summary": "Gets all declarative forms with the values prefilled.",
+                "tags": [
+                    "declarative_settings"
+                ],
+                "security": [
+                    {
+                        "bearer_auth": []
+                    },
+                    {
+                        "basic_auth": []
+                    }
+                ],
+                "parameters": [
+                    {
+                        "name": "OCS-APIRequest",
+                        "in": "header",
+                        "description": "Required to be true for the API request to pass",
+                        "required": true,
+                        "schema": {
+                            "type": "boolean",
+                            "default": true
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Forms returned",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "type": "object",
+                                    "required": [
+                                        "ocs"
+                                    ],
+                                    "properties": {
+                                        "ocs": {
+                                            "type": "object",
+                                            "required": [
+                                                "meta",
+                                                "data"
+                                            ],
+                                            "properties": {
+                                                "meta": {
+                                                    "$ref": "#/components/schemas/OCSMeta"
+                                                },
+                                                "data": {
+                                                    "type": "array",
+                                                    "items": {
+                                                        "$ref": "#/components/schemas/DeclarativeForm"
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    },
+                    "500": {
+                        "description": "",
                         "content": {
-                            "application/octet-stream": {
+                            "text/plain": {
                                 "schema": {
-                                    "type": "string",
-                                    "format": "binary"
+                                    "type": "string"
                                 }
                             }
                         }
diff --git a/apps/settings/src/components/DeclarativeSettings/DeclarativeSection.vue b/apps/settings/src/components/DeclarativeSettings/DeclarativeSection.vue
new file mode 100644
index 00000000000..879eb8e62d8
--- /dev/null
+++ b/apps/settings/src/components/DeclarativeSettings/DeclarativeSection.vue
@@ -0,0 +1,268 @@
+<template>
+	<NcSettingsSection
+		class="declarative-settings-section"
+		:name="t(formApp, form.title)"
+		:description="t(formApp, form.description)"
+		:doc-url="form.doc_url || ''">
+		<div v-for="formField in formFields"
+			 :key="formField.id"
+			 class="declarative-form-field"
+			:aria-label="t('settings', '{app}\'s declarative setting field: {name}', { app: formApp, name: t(formApp, formField.title) })"
+			:class="{
+				'declarative-form-field-text': isTextFormField(formField),
+				'declarative-form-field-select': formField.type === 'select',
+				'declarative-form-field-multi-select': formField.type === 'multi-select',
+				'declarative-form-field-checkbox': formField.type === 'checkbox',
+				'declarative-form-field-multi_checkbox': formField.type === 'multi-checkbox',
+				'declarative-form-field-radio': formField.type === 'radio'
+			}">
+
+			<template v-if="isTextFormField(formField)">
+				<div class="input-wrapper">
+					<NcInputField
+						:type="formField.type"
+						:label="t(formApp, formField.title)"
+						:value.sync="formFieldsData[formField.id].value"
+						:placeholder="t(formApp, formField.placeholder)"
+						@update:value="onChangeDebounced(formField)"
+						@submit="updateDeclarativeSettingsValue(formField)"/>
+				</div>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+
+			<template v-if="formField.type === 'select'">
+				<label :for="formField.id + '_field'">{{ t(formApp, formField.title) }}</label>
+				<div class="input-wrapper">
+					<NcSelect
+						:id="formField.id + '_field'"
+						:options="formField.options"
+						:placeholder="t(formApp, formField.placeholder)"
+						:label-outside="true"
+						:value="formFieldsData[formField.id].value"
+						@input="(value) => updateFormFieldDataValue(value, formField, true)"/>
+				</div>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+
+			<template v-if="formField.type === 'multi-select'">
+				<label :for="formField.id + '_field'">{{ t(formApp, formField.title) }}</label>
+				<div class="input-wrapper">
+					<NcSelect
+						:id="formField.id + '_field'"
+						:options="formField.options"
+						:placeholder="t(formApp, formField.placeholder)"
+						:multiple="true"
+						:label-outside="true"
+						:value="formFieldsData[formField.id].value"
+						@input="(value) => {
+							formFieldsData[formField.id].value = value
+							updateDeclarativeSettingsValue(formField, JSON.stringify(formFieldsData[formField.id].value))
+						}
+				"/>
+				</div>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+
+			<template v-if="formField.type === 'checkbox'">
+				<label :for="formField.id + '_field'">{{ t(formApp, formField.title) }}</label>
+				<NcCheckboxRadioSwitch
+					:id="formField.id + '_field'"
+					:checked="Boolean(formFieldsData[formField.id].value)"
+					@update:checked="(value) => {
+						formField.value = value
+						updateFormFieldDataValue(+value, formField, true)
+					}
+				">
+					{{ t(formApp, formField.label) }}
+				</NcCheckboxRadioSwitch>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+
+			<template v-if="formField.type === 'multi-checkbox'">
+				<label :for="formField.id + '_field'">{{ t(formApp, formField.title) }}</label>
+				<NcCheckboxRadioSwitch
+					v-for="option in formField.options"
+					:id="formField.id + '_field_' + option.value"
+					:key="option.value"
+					:checked="formFieldsData[formField.id].value[option.value]"
+					@update:checked="(value) => {
+						formFieldsData[formField.id].value[option.value] = value
+						// Update without re-generating initial formFieldsData.value object as the link to components are lost
+						updateDeclarativeSettingsValue(formField, JSON.stringify(formFieldsData[formField.id].value))
+					}
+				">
+					{{ t(formApp, option.name) }}
+				</NcCheckboxRadioSwitch>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+
+			<template v-if="formField.type === 'radio'">
+				<label :for="formField.id + '_field'">{{ t(formApp, formField.title) }}</label>
+				<NcCheckboxRadioSwitch
+					v-for="option in formField.options"
+					:key="option.value"
+					:value="option.value"
+					type="radio"
+					:checked="formFieldsData[formField.id].value"
+					@update:checked="(value) => updateFormFieldDataValue(value, formField, true)">
+					{{ t(formApp, option.name) }}
+				</NcCheckboxRadioSwitch>
+				<span class="hint">{{ t(formApp, formField.description) }}</span>
+			</template>
+		</div>
+	</NcSettingsSection>
+</template>
+
+<script>
+import axios from '@nextcloud/axios'
+import { generateOcsUrl } from '@nextcloud/router'
+import { showError } from '@nextcloud/dialogs'
+import debounce from 'debounce'
+import NcSettingsSection from '@nextcloud/vue/dist/Components/NcSettingsSection.js'
+import NcInputField from '@nextcloud/vue/dist/Components/NcInputField.js'
+import NcSelect from '@nextcloud/vue/dist/Components/NcSelect.js'
+import NcCheckboxRadioSwitch from '@nextcloud/vue/dist/Components/NcCheckboxRadioSwitch.js'
+
+export default {
+	name: 'DeclarativeSection',
+	components: {
+		NcSettingsSection,
+		NcInputField,
+		NcSelect,
+		NcCheckboxRadioSwitch,
+	},
+	props: {
+		form: {
+			type: Object,
+			required: true,
+		},
+	},
+	data() {
+		return {
+			formFieldsData: {},
+		}
+	},
+	beforeMount() {
+		this.initFormFieldsData()
+	},
+	computed: {
+		formApp() {
+			return this.form.app || ''
+		},
+		formFields() {
+			return this.form.fields || []
+		},
+	},
+	methods: {
+		initFormFieldsData() {
+			this.form.fields.forEach((formField) => {
+				if (formField.type === 'checkbox') {
+					// convert bool to number using unary plus (+) operator
+					this.$set(formField, 'value', +formField.value)
+				}
+				if (formField.type === 'multi-checkbox') {
+					if (formField.value === '') {
+						// Init formFieldsData from options
+						this.$set(formField, 'value', {})
+						formField.options.forEach(option => {
+							this.$set(formField.value, option.value, false)
+						})
+					} else {
+						this.$set(formField, 'value', JSON.parse(formField.value))
+						// Merge possible new options
+						formField.options.forEach(option => {
+							if (!formField.value.hasOwnProperty(option.value)) {
+								this.$set(formField.value, option.value, false)
+							}
+						})
+						// Remove options that are not in the form anymore
+						Object.keys(formField.value).forEach(key => {
+							if (!formField.options.find(option => option.value === key)) {
+								delete formField.value[key]
+							}
+						})
+					}
+				}
+				if (formField.type === 'multi-select') {
+					if (formField.value === '') {
+						// Init empty array for multi-select
+						this.$set(formField, 'value', [])
+					} else {
+						// JSON decode an array of multiple values set
+						this.$set(formField, 'value', JSON.parse(formField.value))
+					}
+				}
+				this.$set(this.formFieldsData, formField.id, {
+					value: formField.value,
+				})
+			})
+		},
+
+		updateFormFieldDataValue(value, formField, update = false) {
+			this.formFieldsData[formField.id].value = value
+			if (update) {
+				this.updateDeclarativeSettingsValue(formField)
+			}
+		},
+
+		updateDeclarativeSettingsValue(formField, value = null) {
+			try {
+				return axios.post(generateOcsUrl('settings/api/declarative/value'), {
+					app: this.formApp,
+					formId: this.form.id.replace(this.formApp + '_', ''), // Remove app prefix to send clean form id
+					fieldId: formField.id,
+					value: value === null ? this.formFieldsData[formField.id].value : value,
+				});
+			} catch (err) {
+				console.debug(err)
+				showError(t('settings', 'Failed to save setting'))
+			}
+		},
+
+		onChangeDebounced: debounce(function(formField) {
+			this.updateDeclarativeSettingsValue(formField)
+		}, 1000),
+
+		isTextFormField(formField) {
+			return ['text', 'password', 'email', 'tel', 'url', 'number'].includes(formField.type)
+		},
+	},
+}
+</script>
+
+<style lang="scss" scoped>
+.declarative-form-field {
+	margin: 20px 0;
+	padding: 10px 0;
+
+	.input-wrapper {
+		width: 100%;
+		max-width: 400px;
+	}
+
+	&:last-child {
+		border-bottom: none;
+	}
+
+	.hint {
+		display: inline-block;
+		color: var(--color-text-maxcontrast);
+		margin-left: 8px;
+		padding-top: 5px;
+	}
+
+	&-radio, &-multi_checkbox {
+		max-height: 250px;
+		overflow-y: auto;
+	}
+
+	&-multi-select, &-select {
+		display: flex;
+		flex-direction: column;
+
+		label {
+			margin-bottom: 5px;
+		}
+	}
+}
+</style>
diff --git a/apps/settings/src/main-declarative-settings-forms.ts b/apps/settings/src/main-declarative-settings-forms.ts
new file mode 100644
index 00000000000..0b37fee476e
--- /dev/null
+++ b/apps/settings/src/main-declarative-settings-forms.ts
@@ -0,0 +1,50 @@
+import Vue from 'vue';
+import { loadState } from '@nextcloud/initial-state';
+import { translate as t, translatePlural as n } from '@nextcloud/l10n';
+import DeclarativeSection from './components/DeclarativeSettings/DeclarativeSection.vue';
+
+interface DeclarativeFormField {
+	id: string,
+	title: string,
+	description: string,
+	type: string,
+	placeholder: string,
+	label: string,
+	options: Array<any>|null,
+	value: any,
+	default: any,
+}
+
+interface DeclarativeForm {
+	id: number,
+	priority: number,
+	section_type: string,
+	section_id: string,
+	storage_type: string,
+	title: string,
+	description: string,
+	doc_url: string,
+	app: string,
+	fields: Array<DeclarativeFormField>,
+}
+
+const forms = loadState('settings', 'declarative-settings-forms', []) as Array<DeclarativeForm>;
+console.debug('Loaded declarative forms:', forms);
+
+function renderDeclarativeSettingsSections(forms: Array<DeclarativeForm>): void {
+	Vue.mixin({ methods: { t, n } })
+	const DeclarativeSettingsSection = Vue.extend(<any>DeclarativeSection);
+	for (const form of forms) {
+		const el = `#${form.app}_${form.id}`
+		new DeclarativeSettingsSection({
+			el: el,
+			propsData: {
+				form,
+			},
+		})
+	}
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+	renderDeclarativeSettingsSections(forms);
+});
diff --git a/apps/settings/tests/Controller/AdminSettingsControllerTest.php b/apps/settings/tests/Controller/AdminSettingsControllerTest.php
index acdcaa136aa..6a11ceb9fca 100644
--- a/apps/settings/tests/Controller/AdminSettingsControllerTest.php
+++ b/apps/settings/tests/Controller/AdminSettingsControllerTest.php
@@ -29,12 +29,14 @@ namespace OCA\Settings\Tests\Controller;
 use OCA\Settings\Controller\AdminSettingsController;
 use OCA\Settings\Settings\Personal\ServerDevNotice;
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Services\IInitialState;
 use OCP\Group\ISubAdmin;
 use OCP\IGroupManager;
 use OCP\INavigationManager;
 use OCP\IRequest;
 use OCP\IUser;
 use OCP\IUserSession;
+use OCP\Settings\IDeclarativeManager;
 use OCP\Settings\IManager;
 use PHPUnit\Framework\MockObject\MockObject;
 use Test\TestCase;
@@ -62,6 +64,10 @@ class AdminSettingsControllerTest extends TestCase {
 	private $groupManager;
 	/** @var ISubAdmin|MockObject */
 	private $subAdmin;
+	/** @var IDeclarativeManager|MockObject */
+	private $declarativeSettingsManager;
+	/** @var IInitialState|MockObject */
+	private $initialState;
 	/** @var string */
 	private $adminUid = 'lololo';
 
@@ -74,6 +80,8 @@ class AdminSettingsControllerTest extends TestCase {
 		$this->userSession = $this->createMock(IUserSession::class);
 		$this->groupManager = $this->createMock(IGroupManager::class);
 		$this->subAdmin = $this->createMock(ISubAdmin::class);
+		$this->declarativeSettingsManager = $this->createMock(IDeclarativeManager::class);
+		$this->initialState = $this->createMock(IInitialState::class);
 
 		$this->adminSettingsController = new AdminSettingsController(
 			'settings',
@@ -82,7 +90,9 @@ class AdminSettingsControllerTest extends TestCase {
 			$this->settingsManager,
 			$this->userSession,
 			$this->groupManager,
-			$this->subAdmin
+			$this->subAdmin,
+			$this->declarativeSettingsManager,
+			$this->initialState,
 		);
 
 		$user = \OC::$server->getUserManager()->createUser($this->adminUid, 'mylongrandompassword');
@@ -123,6 +133,11 @@ class AdminSettingsControllerTest extends TestCase {
 			->method('getAllowedAdminSettings')
 			->with('test')
 			->willReturn([5 => $this->createMock(ServerDevNotice::class)]);
+		$this->declarativeSettingsManager
+			->expects($this->any())
+			->method('getFormIDs')
+			->with($user, 'admin', 'test')
+			->willReturn([]);
 
 		$idx = $this->adminSettingsController->index('test');
 
diff --git a/apps/testing/composer/composer/autoload_classmap.php b/apps/testing/composer/composer/autoload_classmap.php
index cd2a052bbac..079f8877881 100644
--- a/apps/testing/composer/composer/autoload_classmap.php
+++ b/apps/testing/composer/composer/autoload_classmap.php
@@ -12,9 +12,13 @@ return array(
     'OCA\\Testing\\Controller\\ConfigController' => $baseDir . '/../lib/Controller/ConfigController.php',
     'OCA\\Testing\\Controller\\LockingController' => $baseDir . '/../lib/Controller/LockingController.php',
     'OCA\\Testing\\Controller\\RateLimitTestController' => $baseDir . '/../lib/Controller/RateLimitTestController.php',
+    'OCA\\Testing\\Listener\\GetDeclarativeSettingsValueListener' => $baseDir . '/../lib/Listener/GetDeclarativeSettingsValueListener.php',
+    'OCA\\Testing\\Listener\\RegisterDeclarativeSettingsListener' => $baseDir . '/../lib/Listener/RegisterDeclarativeSettingsListener.php',
+    'OCA\\Testing\\Listener\\SetDeclarativeSettingsValueListener' => $baseDir . '/../lib/Listener/SetDeclarativeSettingsValueListener.php',
     'OCA\\Testing\\Locking\\FakeDBLockingProvider' => $baseDir . '/../lib/Locking/FakeDBLockingProvider.php',
     'OCA\\Testing\\Provider\\FakeText2ImageProvider' => $baseDir . '/../lib/Provider/FakeText2ImageProvider.php',
     'OCA\\Testing\\Provider\\FakeTextProcessingProvider' => $baseDir . '/../lib/Provider/FakeTextProcessingProvider.php',
     'OCA\\Testing\\Provider\\FakeTextProcessingProviderSync' => $baseDir . '/../lib/Provider/FakeTextProcessingProviderSync.php',
     'OCA\\Testing\\Provider\\FakeTranslationProvider' => $baseDir . '/../lib/Provider/FakeTranslationProvider.php',
+    'OCA\\Testing\\Settings\\DeclarativeSettingsForm' => $baseDir . '/../lib/Settings/DeclarativeSettingsForm.php',
 );
diff --git a/apps/testing/composer/composer/autoload_static.php b/apps/testing/composer/composer/autoload_static.php
index ce07262200a..2332da70da9 100644
--- a/apps/testing/composer/composer/autoload_static.php
+++ b/apps/testing/composer/composer/autoload_static.php
@@ -27,11 +27,15 @@ class ComposerStaticInitTesting
         'OCA\\Testing\\Controller\\ConfigController' => __DIR__ . '/..' . '/../lib/Controller/ConfigController.php',
         'OCA\\Testing\\Controller\\LockingController' => __DIR__ . '/..' . '/../lib/Controller/LockingController.php',
         'OCA\\Testing\\Controller\\RateLimitTestController' => __DIR__ . '/..' . '/../lib/Controller/RateLimitTestController.php',
+        'OCA\\Testing\\Listener\\GetDeclarativeSettingsValueListener' => __DIR__ . '/..' . '/../lib/Listener/GetDeclarativeSettingsValueListener.php',
+        'OCA\\Testing\\Listener\\RegisterDeclarativeSettingsListener' => __DIR__ . '/..' . '/../lib/Listener/RegisterDeclarativeSettingsListener.php',
+        'OCA\\Testing\\Listener\\SetDeclarativeSettingsValueListener' => __DIR__ . '/..' . '/../lib/Listener/SetDeclarativeSettingsValueListener.php',
         'OCA\\Testing\\Locking\\FakeDBLockingProvider' => __DIR__ . '/..' . '/../lib/Locking/FakeDBLockingProvider.php',
         'OCA\\Testing\\Provider\\FakeText2ImageProvider' => __DIR__ . '/..' . '/../lib/Provider/FakeText2ImageProvider.php',
         'OCA\\Testing\\Provider\\FakeTextProcessingProvider' => __DIR__ . '/..' . '/../lib/Provider/FakeTextProcessingProvider.php',
         'OCA\\Testing\\Provider\\FakeTextProcessingProviderSync' => __DIR__ . '/..' . '/../lib/Provider/FakeTextProcessingProviderSync.php',
         'OCA\\Testing\\Provider\\FakeTranslationProvider' => __DIR__ . '/..' . '/../lib/Provider/FakeTranslationProvider.php',
+        'OCA\\Testing\\Settings\\DeclarativeSettingsForm' => __DIR__ . '/..' . '/../lib/Settings/DeclarativeSettingsForm.php',
     );
 
     public static function getInitializer(ClassLoader $loader)
diff --git a/apps/testing/composer/composer/installed.php b/apps/testing/composer/composer/installed.php
index 1a66c7f2416..d2b87e1bdfd 100644
--- a/apps/testing/composer/composer/installed.php
+++ b/apps/testing/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'b1797842784b250fb01ed5e3bf130705eb94751b',
+        'reference' => '4ff660ca2e0baa02440ba07296ed7e75fa544c0e',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'b1797842784b250fb01ed5e3bf130705eb94751b',
+            'reference' => '4ff660ca2e0baa02440ba07296ed7e75fa544c0e',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/testing/lib/AppInfo/Application.php b/apps/testing/lib/AppInfo/Application.php
index cbbbf6fc4ea..7b51a8469db 100644
--- a/apps/testing/lib/AppInfo/Application.php
+++ b/apps/testing/lib/AppInfo/Application.php
@@ -25,14 +25,21 @@
 namespace OCA\Testing\AppInfo;
 
 use OCA\Testing\AlternativeHomeUserBackend;
+use OCA\Testing\Listener\GetDeclarativeSettingsValueListener;
+use OCA\Testing\Listener\RegisterDeclarativeSettingsListener;
+use OCA\Testing\Listener\SetDeclarativeSettingsValueListener;
 use OCA\Testing\Provider\FakeText2ImageProvider;
 use OCA\Testing\Provider\FakeTextProcessingProvider;
 use OCA\Testing\Provider\FakeTextProcessingProviderSync;
 use OCA\Testing\Provider\FakeTranslationProvider;
+use OCA\Testing\Settings\DeclarativeSettingsForm;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
+use OCP\Settings\Events\DeclarativeSettingsGetValueEvent;
+use OCP\Settings\Events\DeclarativeSettingsRegisterFormEvent;
+use OCP\Settings\Events\DeclarativeSettingsSetValueEvent;
 
 class Application extends App implements IBootstrap {
 	public function __construct(array $urlParams = []) {
@@ -44,6 +51,11 @@ class Application extends App implements IBootstrap {
 		$context->registerTextProcessingProvider(FakeTextProcessingProvider::class);
 		$context->registerTextProcessingProvider(FakeTextProcessingProviderSync::class);
 		$context->registerTextToImageProvider(FakeText2ImageProvider::class);
+
+		$context->registerDeclarativeSettings(DeclarativeSettingsForm::class);
+		$context->registerEventListener(DeclarativeSettingsRegisterFormEvent::class, RegisterDeclarativeSettingsListener::class);
+		$context->registerEventListener(DeclarativeSettingsGetValueEvent::class, GetDeclarativeSettingsValueListener::class);
+		$context->registerEventListener(DeclarativeSettingsSetValueEvent::class, SetDeclarativeSettingsValueListener::class);
 	}
 
 	public function boot(IBootContext $context): void {
diff --git a/apps/testing/lib/Listener/GetDeclarativeSettingsValueListener.php b/apps/testing/lib/Listener/GetDeclarativeSettingsValueListener.php
new file mode 100644
index 00000000000..ff55ba77104
--- /dev/null
+++ b/apps/testing/lib/Listener/GetDeclarativeSettingsValueListener.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Testing\Listener;
+
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\IConfig;
+use OCP\Settings\Events\DeclarativeSettingsGetValueEvent;
+
+/**
+ * @template-implements IEventListener<DeclarativeSettingsGetValueEvent>
+ */
+class GetDeclarativeSettingsValueListener implements IEventListener {
+
+	public function __construct(private IConfig $config) {
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof DeclarativeSettingsGetValueEvent) {
+			return;
+		}
+
+		if ($event->getApp() !== 'testing') {
+			return;
+		}
+
+		$value = $this->config->getUserValue($event->getUser()->getUID(), $event->getApp(), $event->getFieldId());
+		$event->setValue($value);
+	}
+}
diff --git a/apps/testing/lib/Listener/RegisterDeclarativeSettingsListener.php b/apps/testing/lib/Listener/RegisterDeclarativeSettingsListener.php
new file mode 100644
index 00000000000..e11205904e7
--- /dev/null
+++ b/apps/testing/lib/Listener/RegisterDeclarativeSettingsListener.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Testing\Listener;
+
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Settings\DeclarativeSettingsTypes;
+use OCP\Settings\Events\DeclarativeSettingsRegisterFormEvent;
+
+/**
+ * @template-implements IEventListener<DeclarativeSettingsRegisterFormEvent>
+ */
+class RegisterDeclarativeSettingsListener implements IEventListener {
+
+	public function __construct() {
+	}
+
+	public function handle(Event $event): void {
+		if (!($event instanceof DeclarativeSettingsRegisterFormEvent)) {
+			// Unrelated
+			return;
+		}
+
+		$event->registerSchema('testing', [
+			'id' => 'test_declarative_form_event',
+			'priority' => 20,
+			'section_type' => DeclarativeSettingsTypes::SECTION_TYPE_ADMIN,
+			'section_id' => 'additional',
+			'storage_type' => DeclarativeSettingsTypes::STORAGE_TYPE_INTERNAL,
+			'title' => 'Test declarative settings event', // NcSettingsSection name
+			'description' => 'This form is registered via the RegisterDeclarativeSettingsFormEvent', // NcSettingsSection description
+			'fields' => [
+				[
+					'id' => 'event_field_1',
+					'title' => 'Why is 42 this answer to all questions?',
+					'description' => 'Hint: It\'s not',
+					'type' => DeclarativeSettingsTypes::TEXT,
+					'placeholder' => 'Enter your answer',
+					'default' => 'Because it is',
+				],
+				[
+					'id' => 'feature_rating',
+					'title' => 'How would you rate this feature?',
+					'description' => 'Your vote is not anonymous',
+					'type' => DeclarativeSettingsTypes::RADIO, // radio, radio-button (NcCheckboxRadioSwitch button-variant)
+					'label' => 'Select single toggle',
+					'default' => '3',
+					'options' => [
+						[
+							'name' => 'Awesome', // NcCheckboxRadioSwitch display name
+							'value' => '1' // NcCheckboxRadioSwitch value
+						],
+						[
+							'name' => 'Very awesome',
+							'value' => '2'
+						],
+						[
+							'name' => 'Super awesome',
+							'value' => '3'
+						],
+					],
+				],
+			],
+		]);
+	}
+}
diff --git a/apps/testing/lib/Listener/SetDeclarativeSettingsValueListener.php b/apps/testing/lib/Listener/SetDeclarativeSettingsValueListener.php
new file mode 100644
index 00000000000..d9931455934
--- /dev/null
+++ b/apps/testing/lib/Listener/SetDeclarativeSettingsValueListener.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Testing\Listener;
+
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\IConfig;
+use OCP\Settings\Events\DeclarativeSettingsSetValueEvent;
+
+/**
+ * @template-implements IEventListener<DeclarativeSettingsSetValueEvent>
+ */
+class SetDeclarativeSettingsValueListener implements IEventListener {
+
+	public function __construct(private IConfig $config) {
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof DeclarativeSettingsSetValueEvent) {
+			return;
+		}
+
+		if ($event->getApp() !== 'testing') {
+			return;
+		}
+
+		error_log('Testing app wants to store ' . $event->getValue() . ' for field ' . $event->getFieldId() . ' for user ' . $event->getUser()->getUID());
+		$this->config->setUserValue($event->getUser()->getUID(), $event->getApp(), $event->getFieldId(), $event->getValue());
+	}
+}
diff --git a/apps/testing/lib/Settings/DeclarativeSettingsForm.php b/apps/testing/lib/Settings/DeclarativeSettingsForm.php
new file mode 100644
index 00000000000..a717de59ea1
--- /dev/null
+++ b/apps/testing/lib/Settings/DeclarativeSettingsForm.php
@@ -0,0 +1,172 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Testing\Settings;
+
+use OCP\Settings\DeclarativeSettingsTypes;
+use OCP\Settings\IDeclarativeSettingsForm;
+
+class DeclarativeSettingsForm implements IDeclarativeSettingsForm {
+	public function getSchema(): array {
+		return [
+			'id' => 'test_declarative_form',
+			'priority' => 10,
+			'section_type' => DeclarativeSettingsTypes::SECTION_TYPE_ADMIN, // admin, personal
+			'section_id' => 'additional',
+			'storage_type' => DeclarativeSettingsTypes::STORAGE_TYPE_INTERNAL, // external, internal (handled by core to store in appconfig and preferences)
+			'title' => 'Test declarative settings class', // NcSettingsSection name
+			'description' => 'This form is registered with a DeclarativeSettingsForm class', // NcSettingsSection description
+			'doc_url' => '', // NcSettingsSection doc_url for documentation or help page, empty string if not needed
+			'fields' => [
+				[
+					'id' => 'test_ex_app_field_7', // configkey
+					'title' => 'Multi-selection', // name or label
+					'description' => 'Select some option setting', // hint
+					'type' => DeclarativeSettingsTypes::MULTI_SELECT, // select, radio, multi-select
+					'options' => ['foo', 'bar', 'baz'], // simple options for select, radio, multi-select
+					'placeholder' => 'Select some multiple options', // input placeholder
+					'default' => ['foo', 'bar'],
+				],
+				[
+					'id' => 'some_real_setting',
+					'title' => 'Choose init status check background job interval',
+					'description' => 'How often AppAPI should check for initialization status',
+					'type' => DeclarativeSettingsTypes::RADIO, // radio (NcCheckboxRadioSwitch type radio)
+					'placeholder' => 'Choose init status check background job interval',
+					'default' => '40m',
+					'options' => [
+						[
+							'name' => 'Each 40 minutes', // NcCheckboxRadioSwitch display name
+							'value' => '40m' // NcCheckboxRadioSwitch value
+						],
+						[
+							'name' => 'Each 60 minutes',
+							'value' => '60m'
+						],
+						[
+							'name' => 'Each 120 minutes',
+							'value' => '120m'
+						],
+						[
+							'name' => 'Each day',
+							'value' => 60 * 24 . 'm'
+						],
+					],
+				],
+				[
+					'id' => 'test_ex_app_field_1', // configkey
+					'title' => 'Default text field', // label
+					'description' => 'Set some simple text setting', // hint
+					'type' => DeclarativeSettingsTypes::TEXT, // text, password, email, tel, url, number
+					'placeholder' => 'Enter text setting', // placeholder
+					'default' => 'foo',
+				],
+				[
+					'id' => 'test_ex_app_field_1_1',
+					'title' => 'Email field',
+					'description' => 'Set email config',
+					'type' => DeclarativeSettingsTypes::EMAIL,
+					'placeholder' => 'Enter email',
+					'default' => '',
+				],
+				[
+					'id' => 'test_ex_app_field_1_2',
+					'title' => 'Tel field',
+					'description' => 'Set tel config',
+					'type' => DeclarativeSettingsTypes::TEL,
+					'placeholder' => 'Enter your tel',
+					'default' => '',
+				],
+				[
+					'id' => 'test_ex_app_field_1_3',
+					'title' => 'Url (website) field',
+					'description' => 'Set url config',
+					'type' => 'url',
+					'placeholder' => 'Enter url',
+					'default' => '',
+				],
+				[
+					'id' => 'test_ex_app_field_1_4',
+					'title' => 'Number field',
+					'description' => 'Set number config',
+					'type' => DeclarativeSettingsTypes::NUMBER,
+					'placeholder' => 'Enter number value',
+					'default' => 0,
+				],
+				[
+					'id' => 'test_ex_app_field_2',
+					'title' => 'Password',
+					'description' => 'Set some secure value setting',
+					'type' => 'password',
+					'placeholder' => 'Set secure value',
+					'default' => '',
+				],
+				[
+					'id' => 'test_ex_app_field_3',
+					'title' => 'Selection',
+					'description' => 'Select some option setting',
+					'type' => DeclarativeSettingsTypes::SELECT, // select, radio, multi-select
+					'options' => ['foo', 'bar', 'baz'],
+					'placeholder' => 'Select some option setting',
+					'default' => 'foo',
+				],
+				[
+					'id' => 'test_ex_app_field_4',
+					'title' => 'Toggle something',
+					'description' => 'Select checkbox option setting',
+					'type' => DeclarativeSettingsTypes::CHECKBOX, // checkbox, multiple-checkbox
+					'label' => 'Verify something if enabled',
+					'default' => false,
+				],
+				[
+					'id' => 'test_ex_app_field_5',
+					'title' => 'Multiple checkbox toggles, describing one setting, checked options are saved as an JSON object {foo: true, bar: false}',
+					'description' => 'Select checkbox option setting',
+					'type' => DeclarativeSettingsTypes::MULTI_CHECKBOX, // checkbox, multi-checkbox
+					'default' => ['foo' => true, 'bar' => true, 'baz' => true],
+					'options' => [
+						[
+							'name' => 'Foo',
+							'value' => 'foo', // multiple-checkbox configkey
+						],
+						[
+							'name' => 'Bar',
+							'value' => 'bar',
+						],
+						[
+							'name' => 'Baz',
+							'value' => 'baz',
+						],
+						[
+							'name' => 'Qux',
+							'value' => 'qux',
+						],
+					],
+				],
+				[
+					'id' => 'test_ex_app_field_6',
+					'title' => 'Radio toggles, describing one setting like single select',
+					'description' => 'Select radio option setting',
+					'type' => DeclarativeSettingsTypes::RADIO, // radio (NcCheckboxRadioSwitch type radio)
+					'label' => 'Select single toggle',
+					'default' => 'foo',
+					'options' => [
+						[
+							'name' => 'First radio', // NcCheckboxRadioSwitch display name
+							'value' => 'foo' // NcCheckboxRadioSwitch value
+						],
+						[
+							'name' => 'Second radio',
+							'value' => 'bar'
+						],
+						[
+							'name' => 'Third radio',
+							'value' => 'baz'
+						],
+					],
+				],
+			],
+		];
+	}
+}