<?php

/**
 * SPDX-FileCopyrightText: 2019-2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
 * SPDX-License-Identifier: AGPL-3.0-only
 */
namespace OCA\Encryption\Controller;

use OCA\Encryption\Recovery;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\NoAdminRequired;
use OCP\AppFramework\Http\DataResponse;
use OCP\Encryption\Exceptions\GenericEncryptionException;
use OCP\IL10N;
use OCP\IRequest;
use Psr\Log\LoggerInterface;

class RecoveryController extends Controller {
	public function __construct(
		string $appName,
		IRequest $request,
		private IL10N $l,
		private Recovery $recovery,
		private LoggerInterface $logger,
	) {
		parent::__construct($appName, $request);
	}

	public function adminRecovery(string $recoveryPassword, string $confirmPassword, bool $adminEnableRecovery): DataResponse {
		// Check if both passwords are the same
		if (empty($recoveryPassword)) {
			$errorMessage = $this->l->t('Missing recovery key password');
			return new DataResponse(['data' => ['message' => $errorMessage]],
				Http::STATUS_BAD_REQUEST);
		}

		if (empty($confirmPassword)) {
			$errorMessage = $this->l->t('Please repeat the recovery key password');
			return new DataResponse(['data' => ['message' => $errorMessage]],
				Http::STATUS_BAD_REQUEST);
		}

		if ($recoveryPassword !== $confirmPassword) {
			$errorMessage = $this->l->t('Repeated recovery key password does not match the provided recovery key password');
			return new DataResponse(['data' => ['message' => $errorMessage]],
				Http::STATUS_BAD_REQUEST);
		}

		try {
			if ($adminEnableRecovery) {
				if ($this->recovery->enableAdminRecovery($recoveryPassword)) {
					return new DataResponse(['data' => ['message' => $this->l->t('Recovery key successfully enabled')]]);
				}
				return new DataResponse(['data' => ['message' => $this->l->t('Could not enable recovery key. Please check your recovery key password!')]], Http::STATUS_BAD_REQUEST);
			} else {
				if ($this->recovery->disableAdminRecovery($recoveryPassword)) {
					return new DataResponse(['data' => ['message' => $this->l->t('Recovery key successfully disabled')]]);
				}
				return new DataResponse(['data' => ['message' => $this->l->t('Could not disable recovery key. Please check your recovery key password!')]], Http::STATUS_BAD_REQUEST);
			}
		} catch (\Exception $e) {
			$this->logger->error('Error enabling or disabling recovery key', ['exception' => $e]);
			if ($e instanceof GenericEncryptionException) {
				return new DataResponse(['data' => ['message' => $e->getMessage()]], Http::STATUS_INTERNAL_SERVER_ERROR);
			}
			return new DataResponse([], Http::STATUS_INTERNAL_SERVER_ERROR);
		}
	}

	public function changeRecoveryPassword(string $newPassword, string $oldPassword, string $confirmPassword): DataResponse {
		//check if both passwords are the same
		if (empty($oldPassword)) {
			$errorMessage = $this->l->t('Please provide the old recovery password');
			return new DataResponse(['data' => ['message' => $errorMessage]], Http::STATUS_BAD_REQUEST);
		}

		if (empty($newPassword)) {
			$errorMessage = $this->l->t('Please provide a new recovery password');
			return new DataResponse(['data' => ['message' => $errorMessage]], Http::STATUS_BAD_REQUEST);
		}

		if (empty($confirmPassword)) {
			$errorMessage = $this->l->t('Please repeat the new recovery password');
			return new DataResponse(['data' => ['message' => $errorMessage]], Http::STATUS_BAD_REQUEST);
		}

		if ($newPassword !== $confirmPassword) {
			$errorMessage = $this->l->t('Repeated recovery key password does not match the provided recovery key password');
			return new DataResponse(['data' => ['message' => $errorMessage]], Http::STATUS_BAD_REQUEST);
		}

		try {
			$result = $this->recovery->changeRecoveryKeyPassword($newPassword,
				$oldPassword);

			if ($result) {
				return new DataResponse(
					[
						'data' => [
							'message' => $this->l->t('Password successfully changed.')]
					]
				);
			}
			return new DataResponse([
				'data' => [
					'message' => $this->l->t('Could not change the password. Maybe the old password was not correct.')
				]
			], Http::STATUS_BAD_REQUEST);
		} catch (\Exception $e) {
			$this->logger->error('Error changing recovery password', ['exception' => $e]);
			if ($e instanceof GenericEncryptionException) {
				return new DataResponse(['data' => ['message' => $e->getMessage()]], Http::STATUS_INTERNAL_SERVER_ERROR);
			}
			return new DataResponse([], Http::STATUS_INTERNAL_SERVER_ERROR);
		}
	}

	/**
	 * @param string $userEnableRecovery
	 * @return DataResponse
	 */
	#[NoAdminRequired]
	public function userSetRecovery($userEnableRecovery) {
		if ($userEnableRecovery === '0' || $userEnableRecovery === '1') {
			$result = $this->recovery->setRecoveryForUser($userEnableRecovery);

			if ($result) {
				if ($userEnableRecovery === '0') {
					return new DataResponse(
						[
							'data' => [
								'message' => $this->l->t('Recovery Key disabled')]
						]
					);
				}
				return new DataResponse(
					[
						'data' => [
							'message' => $this->l->t('Recovery Key enabled')]
					]
				);
			}
		}
		return new DataResponse(
			[
				'data' => [
					'message' => $this->l->t('Could not enable the recovery key, please try again or contact your administrator')
				]
			], Http::STATUS_BAD_REQUEST);
	}
}