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DateCommand.php
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DateCommand.php
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<?php
/**
* This file is part of the TelegramBot package.
*
* (c) Avtandil Kikabidze aka LONGMAN <akalongman@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Longman\TelegramBot\Commands\UserCommands;
use DateTime;
use DateTimeZone;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;
use Longman\TelegramBot\Commands\UserCommand;
use Longman\TelegramBot\Request;
use Longman\TelegramBot\TelegramLog;
/**
* User "/date" command
*/
class DateCommand extends UserCommand
{
/**
* @var string
*/
protected $name = 'date';
/**
* @var string
*/
protected $description = 'Show date/time by location';
/**
* @var string
*/
protected $usage = '/date <location>';
/**
* @var string
*/
protected $version = '1.4.0';
/**
* Guzzle Client object
*
* @var \GuzzleHttp\Client
*/
private $client;
/**
* Base URI for Google Maps API
*
* @var string
*/
private $google_api_base_uri = 'https://maps.googleapis.com/maps/api/';
/**
* The Google API Key from the command config
*
* @var string
*/
private $google_api_key;
/**
* Date format
*
* @var string
*/
private $date_format = 'd-m-Y H:i:s';
/**
* Get coordinates
*
* @param string $location
*
* @return array
*/
private function getCoordinates($location)
{
$path = 'geocode/json';
$query = ['address' => urlencode($location)];
if ($this->google_api_key !== null) {
$query['key'] = $this->google_api_key;
}
try {
$response = $this->client->get($path, ['query' => $query]);
} catch (RequestException $e) {
TelegramLog::error($e->getMessage());
return [];
}
if (!($data = $this->validateResponseData($response->getBody()))) {
return [];
}
$result = $data['results'][0];
$lat = $result['geometry']['location']['lat'];
$lng = $result['geometry']['location']['lng'];
$acc = $result['geometry']['location_type'];
$types = $result['types'];
return [$lat, $lng, $acc, $types];
}
/**
* Get date
*
* @param string $lat
* @param string $lng
*
* @return array
*/
private function getDate($lat, $lng)
{
$path = 'timezone/json';
$date_utc = new \DateTime(null, new \DateTimeZone('UTC'));
$timestamp = $date_utc->format('U');
$query = [
'location' => urlencode($lat) . ',' . urlencode($lng),
'timestamp' => urlencode($timestamp),
];
if ($this->google_api_key !== null) {
$query['key'] = $this->google_api_key;
}
try {
$response = $this->client->get($path, ['query' => $query]);
} catch (RequestException $e) {
TelegramLog::error($e->getMessage());
return [];
}
if (!($data = $this->validateResponseData($response->getBody()))) {
return [];
}
$local_time = $timestamp + $data['rawOffset'] + $data['dstOffset'];
return [$local_time, $data['timeZoneId']];
}
/**
* Evaluate the response data and see if the request was successful
*
* @param string $data
*
* @return array
*/
private function validateResponseData($data)
{
if (empty($data)) {
return [];
}
$data = json_decode($data, true);
if (empty($data)) {
return [];
}
if (isset($data['status']) && $data['status'] !== 'OK') {
return [];
}
return $data;
}
/**
* Get formatted date at the passed location
*
* @param string $location
*
* @return string
* @throws \Longman\TelegramBot\Exception\TelegramException
*/
private function getFormattedDate($location)
{
if ($location === null || $location === '') {
return 'The time in nowhere is never';
}
list($lat, $lng) = $this->getCoordinates($location);
if (empty($lat) || empty($lng)) {
return 'It seems that in "' . $location . '" they do not have a concept of time.';
}
list($local_time, $timezone_id) = $this->getDate($lat, $lng);
$date_utc = new DateTime(gmdate('Y-m-d H:i:s', $local_time), new DateTimeZone($timezone_id));
return 'The local time in ' . $timezone_id . ' is: ' . $date_utc->format($this->date_format);
}
/**
* Command execute method
*
* @return mixed
* @throws \Longman\TelegramBot\Exception\TelegramException
*/
public function execute()
{
//First we set up the necessary member variables.
$this->client = new Client(['base_uri' => $this->google_api_base_uri]);
if (($this->google_api_key = trim($this->getConfig('google_api_key'))) === '') {
$this->google_api_key = null;
}
$message = $this->getMessage();
$chat_id = $message->getChat()->getId();
$location = $message->getText(true);
$text = 'You must specify location in format: /date <city>';
if ($location !== '') {
$text = $this->getFormattedDate($location);
}
$data = [
'chat_id' => $chat_id,
'text' => $text,
];
return Request::sendMessage($data);
}
}

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