450 lines
14 KiB
PHP
450 lines
14 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2020, Julien Veyssier
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*
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* @author Julien Veyssier <eneiluj@posteo.net>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\WeatherStatus\Service;
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use OCP\IConfig;
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use OCP\IL10N;
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use OCP\App\IAppManager;
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use OCP\Accounts\IAccountManager;
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use OCP\Accounts\PropertyDoesNotExistException;
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use OCP\IUserManager;
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use OCP\Http\Client\IClientService;
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use OCP\Http\Client\IClient;
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use OCP\ICacheFactory;
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use OCP\ICache;
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use OCP\ILogger;
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use OCA\WeatherStatus\AppInfo\Application;
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/**
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* Class WeatherStatusService
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*
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* @package OCA\WeatherStatus\Service
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*/
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class WeatherStatusService {
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public const MODE_BROWSER_LOCATION = 1;
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public const MODE_MANUAL_LOCATION = 2;
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/** @var IClientService */
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private $clientService;
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/** @var IClient */
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private $client;
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/** @var IConfig */
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private $config;
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/** @var IL10N */
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private $l10n;
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/** @var ILogger */
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private $logger;
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/** @var IAccountManager */
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private $accountManager;
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/** @var IUserManager */
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private $userManager;
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/** @var IAppManager */
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private $appManager;
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/** @var ICacheFactory */
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private $cacheFactory;
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/** @var ICache */
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private $cache;
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/** @var string */
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private $userId;
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/** @var string */
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private $version;
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/**
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* WeatherStatusService constructor
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*
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* @param IClientService $clientService
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* @param IConfig $config
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* @param IL10N $l10n
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* @param ILogger $logger
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* @param IAccountManager $accountManager
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* @param IUserManager $userManager
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* @param IAppManager $appManager
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* @param ICacheFactory $cacheFactory
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* @param string $userId
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*/
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public function __construct(IClientService $clientService,
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IConfig $config,
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IL10N $l10n,
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ILogger $logger,
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IAccountManager $accountManager,
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IUserManager $userManager,
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IAppManager $appManager,
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ICacheFactory $cacheFactory,
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?string $userId) {
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$this->config = $config;
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$this->userId = $userId;
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$this->l10n = $l10n;
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$this->logger = $logger;
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$this->accountManager = $accountManager;
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$this->userManager = $userManager;
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$this->appManager = $appManager;
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$this->version = $appManager->getAppVersion(Application::APP_ID);
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$this->clientService = $clientService;
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$this->client = $clientService->newClient();
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if ($cacheFactory->isAvailable()) {
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$this->cache = $cacheFactory->createDistributed();
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}
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}
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/**
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* Change the weather status mode. There are currently 2 modes:
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* - ask the browser
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* - use the user defined address
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* @param int $mode New mode
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* @return array success state
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*/
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public function setMode(int $mode): array {
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$this->config->setUserValue($this->userId, Application::APP_ID, 'mode', strval($mode));
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return ['success' => true];
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}
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/**
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* Get favorites list
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* @param array $favorites
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* @return array success state
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*/
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public function getFavorites(): array {
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$favoritesJson = $this->config->getUserValue($this->userId, Application::APP_ID, 'favorites', '');
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return json_decode($favoritesJson, true) ?: [];
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}
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/**
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* Set favorites list
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* @param array $favorites
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* @return array success state
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*/
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public function setFavorites(array $favorites): array {
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$this->config->setUserValue($this->userId, Application::APP_ID, 'favorites', json_encode($favorites));
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return ['success' => true];
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}
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/**
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* Try to use the address set in user personal settings as weather location
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*
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* @return array with success state and address information
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*/
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public function usePersonalAddress(): array {
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$account = $this->accountManager->getAccount($this->userManager->get($this->userId));
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try {
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$address = $account->getProperty('address')->getValue();
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} catch (PropertyDoesNotExistException $e) {
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return ['success' => false];
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}
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if ($address === '') {
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return ['success' => false];
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}
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return $this->setAddress($address);
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}
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/**
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* Set address and resolve it to get coordinates
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* or directly set coordinates and get address with reverse geocoding
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*
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* @param string|null $address Any approximative or exact address
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* @param float|null $lat Latitude in decimal degree format
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* @param float|null $lon Longitude in decimal degree format
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* @return array with success state and address information
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*/
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public function setLocation(?string $address, ?float $lat, ?float $lon): array {
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if (!is_null($lat) && !is_null($lon)) {
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// store coordinates
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$this->config->setUserValue($this->userId, Application::APP_ID, 'lat', strval($lat));
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$this->config->setUserValue($this->userId, Application::APP_ID, 'lon', strval($lon));
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// resolve and store formatted address
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$address = $this->resolveLocation($lat, $lon);
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$address = $address ? $address : $this->l10n->t('Unknown address');
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$this->config->setUserValue($this->userId, Application::APP_ID, 'address', $address);
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// get and store altitude
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$altitude = $this->getAltitude($lat, $lon);
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$this->config->setUserValue($this->userId, Application::APP_ID, 'altitude', strval($altitude));
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return [
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'address' => $address,
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'success' => true,
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];
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} elseif ($address) {
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return $this->setAddress($address);
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} else {
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return ['success' => false];
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}
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}
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/**
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* Provide address information from coordinates
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*
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* @param float $lat Latitude in decimal degree format
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* @param float $lon Longitude in decimal degree format
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*/
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private function resolveLocation(float $lat, float $lon): ?string {
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$params = [
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'lat' => number_format($lat, 2),
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'lon' => number_format($lon, 2),
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'addressdetails' => 1,
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'format' => 'json',
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];
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$url = 'https://nominatim.openstreetmap.org/reverse';
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$result = $this->requestJSON($url, $params);
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return $this->formatOsmAddress($result);
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}
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/**
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* Get altitude from coordinates
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*
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* @param float $lat Latitude in decimal degree format
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* @param float $lon Longitude in decimal degree format
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* @return float altitude in meter
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*/
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private function getAltitude(float $lat, float $lon): float {
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$params = [
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'locations' => $lat . ',' . $lon,
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];
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$url = 'https://api.opentopodata.org/v1/srtm30m';
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$result = $this->requestJSON($url, $params);
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$altitude = 0;
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if (isset($result['results']) && is_array($result['results']) && count($result['results']) > 0
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&& is_array($result['results'][0]) && isset($result['results'][0]['elevation'])) {
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$altitude = floatval($result['results'][0]['elevation']);
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}
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return $altitude;
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}
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/**
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* @return string Formatted address from JSON nominatim result
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*/
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private function formatOsmAddress(array $json): ?string {
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if (isset($json['address']) && isset($json['display_name'])) {
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$jsonAddr = $json['address'];
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$cityAddress = '';
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// priority : city, town, village, municipality
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if (isset($jsonAddr['city'])) {
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$cityAddress .= $jsonAddr['city'];
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} elseif (isset($jsonAddr['town'])) {
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$cityAddress .= $jsonAddr['town'];
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} elseif (isset($jsonAddr['village'])) {
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$cityAddress .= $jsonAddr['village'];
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} elseif (isset($jsonAddr['municipality'])) {
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$cityAddress .= $jsonAddr['municipality'];
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} else {
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return $json['display_name'];
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}
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// post code
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if (isset($jsonAddr['postcode'])) {
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$cityAddress .= ', ' . $jsonAddr['postcode'];
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}
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// country
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if (isset($jsonAddr['country'])) {
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$cityAddress .= ', ' . $jsonAddr['country'];
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return $cityAddress;
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} else {
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return $json['display_name'];
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}
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} elseif (isset($json['display_name'])) {
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return $json['display_name'];
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}
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return null;
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}
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/**
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* Set address and resolve it to get coordinates
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*
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* @param string $address Any approximative or exact address
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* @return array with success state and address information (coordinates and formatted address)
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*/
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public function setAddress(string $address): array {
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$addressInfo = $this->searchForAddress($address);
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if (isset($addressInfo['display_name']) && isset($addressInfo['lat']) && isset($addressInfo['lon'])) {
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$formattedAddress = $this->formatOsmAddress($addressInfo);
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$this->config->setUserValue($this->userId, Application::APP_ID, 'address', $formattedAddress);
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$this->config->setUserValue($this->userId, Application::APP_ID, 'lat', strval($addressInfo['lat']));
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$this->config->setUserValue($this->userId, Application::APP_ID, 'lon', strval($addressInfo['lon']));
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$this->config->setUserValue($this->userId, Application::APP_ID, 'mode', strval(self::MODE_MANUAL_LOCATION));
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// get and store altitude
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$altitude = $this->getAltitude(floatval($addressInfo['lat']), floatval($addressInfo['lon']));
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$this->config->setUserValue($this->userId, Application::APP_ID, 'altitude', strval($altitude));
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return [
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'lat' => $addressInfo['lat'],
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'lon' => $addressInfo['lon'],
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'address' => $formattedAddress,
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'success' => true,
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];
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} else {
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return ['success' => false];
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}
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}
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/**
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* Ask nominatim information about an unformatted address
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*
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* @param string Unformatted address
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* @return array Full Nominatim result for the given address
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*/
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private function searchForAddress(string $address): array {
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$params = [
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'format' => 'json',
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'addressdetails' => '1',
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'extratags' => '1',
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'namedetails' => '1',
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'limit' => '1',
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];
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$url = 'https://nominatim.openstreetmap.org/search/' . $address;
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$results = $this->requestJSON($url, $params);
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if (count($results) > 0) {
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return $results[0];
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}
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return ['error' => $this->l10n->t('No result.')];
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}
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/**
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* Get stored user location
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*
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* @return array which contains coordinates, formatted address and current weather status mode
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*/
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public function getLocation(): array {
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$lat = $this->config->getUserValue($this->userId, Application::APP_ID, 'lat', '');
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$lon = $this->config->getUserValue($this->userId, Application::APP_ID, 'lon', '');
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$address = $this->config->getUserValue($this->userId, Application::APP_ID, 'address', '');
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$mode = $this->config->getUserValue($this->userId, Application::APP_ID, 'mode', self::MODE_MANUAL_LOCATION);
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return [
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'lat' => $lat,
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'lon' => $lon,
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'address' => $address,
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'mode' => intval($mode),
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];
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}
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/**
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* Get forecast for current location
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*
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* @return array which contains success state and filtered forecast data
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*/
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public function getForecast(): array {
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$lat = $this->config->getUserValue($this->userId, Application::APP_ID, 'lat', '');
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$lon = $this->config->getUserValue($this->userId, Application::APP_ID, 'lon', '');
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$alt = $this->config->getUserValue($this->userId, Application::APP_ID, 'altitude', '');
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if (!is_numeric($alt)) {
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$alt = 0;
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}
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if (is_numeric($lat) && is_numeric($lon)) {
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return $this->forecastRequest(floatval($lat), floatval($lon), floatval($alt));
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} else {
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return ['success' => false];
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}
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}
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/**
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* Actually make the request to the forecast service
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*
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* @param float $lat Latitude of requested forecast, in decimal degree format
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* @param float $lon Longitude of requested forecast, in decimal degree format
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* @param float $altitude Altitude of requested forecast, in meter
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* @param int $nbValues Number of forecast values (hours)
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* @return array Filtered forecast data
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*/
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private function forecastRequest(float $lat, float $lon, float $altitude, int $nbValues = 10): array {
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$params = [
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'lat' => number_format($lat, 2),
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'lon' => number_format($lon, 2),
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'altitude' => $altitude,
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];
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$url = 'https://api.met.no/weatherapi/locationforecast/2.0/compact';
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$weather = $this->requestJSON($url, $params);
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if (isset($weather['properties']) && isset($weather['properties']['timeseries']) && is_array($weather['properties']['timeseries'])) {
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return array_slice($weather['properties']['timeseries'], 0, $nbValues);
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}
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return ['error' => $this->l10n->t('Malformed JSON data.')];
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}
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/**
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* Make a HTTP GET request and parse JSON result.
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* Request results are cached until the 'Expires' response header says so
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*
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* @param string $url Base URL to query
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* @param array $params GET parameters
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* @return array which contains the error message or the parsed JSON result
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*/
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private function requestJSON(string $url, array $params = []): array {
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if (isset($this->cache)) {
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$cacheKey = $url . '|' . implode(',', $params) . '|' . implode(',', array_keys($params));
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if ($this->cache->hasKey($cacheKey)) {
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return $this->cache->get($cacheKey);
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}
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}
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try {
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$options = [
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'headers' => [
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'User-Agent' => 'NextcloudWeatherStatus/' . $this->version . ' nextcloud.com'
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],
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];
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$reqUrl = $url;
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if (count($params) > 0) {
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$paramsContent = http_build_query($params);
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$reqUrl = $url . '?' . $paramsContent;
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}
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$response = $this->client->get($reqUrl, $options);
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$body = $response->getBody();
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$headers = $response->getHeaders();
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$respCode = $response->getStatusCode();
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if ($respCode >= 400) {
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return ['error' => $this->l10n->t('Error')];
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} else {
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$json = json_decode($body, true);
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if (isset($this->cache)) {
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// default cache duration is one hour
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$cacheDuration = 60 * 60;
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if (isset($headers['Expires']) && count($headers['Expires']) > 0) {
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// if the Expires response header is set, use it to define cache duration
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$expireTs = (new \Datetime($headers['Expires'][0]))->getTimestamp();
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$nowTs = (new \Datetime())->getTimestamp();
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$duration = $expireTs - $nowTs;
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if ($duration > $cacheDuration) {
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$cacheDuration = $duration;
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}
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}
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$this->cache->set($cacheKey, $json, $cacheDuration);
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}
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return $json;
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}
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} catch (\Exception $e) {
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$this->logger->warning($url . 'API error : ' . $e, ['app' => Application::APP_ID]);
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return ['error' => $e->getMessage()];
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}
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}
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}
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