<? 
/**
 * Используйте эти классы, если не умеете или не хотите работать с `composer`
 * и использовать библиотеку [dadata-php](https://github.com/hflabs/dadata-php/).
 * 
 * Классы не имеют внешних зависимостей, кроме `curl`. Примеры вызова внизу файла.
 */

 class TooManyRequests extends Exception
 {
 }
 
 class Dadata
 {
     private $clean_url = "https://cleaner.dadata.ru/api/v1/clean";
     private $suggest_url = "https://suggestions.dadata.ru/suggestions/api/4_1/rs";
     private $token;
     private $secret;
     private $handle;
 
     public function __construct($token, $secret)
     {
         $this->token = $token;
         $this->secret = $secret;
     }
 
     /**
      * Initialize connection.
      */
     public function init()
     {
         $this->handle = curl_init();
         curl_setopt($this->handle, CURLOPT_RETURNTRANSFER, 1);
         curl_setopt($this->handle, CURLOPT_HTTPHEADER, array(
             "Content-Type: application/json",
             "Accept: application/json",
             "Authorization: Token " . $this->token,
             "X-Secret: " . $this->secret,
         ));
         curl_setopt($this->handle, CURLOPT_POST, 1);
     }
 
     /**
      * Clean service.
      * See for details:
      *   - https://dadata.ru/api/clean/address
      *   - https://dadata.ru/api/clean/phone
      *   - https://dadata.ru/api/clean/passport
      *   - https://dadata.ru/api/clean/name
      * 
      * (!) This is a PAID service. Not included in free or other plans.
      */
     public function clean($type, $value)
     {
         $url = $this->clean_url . "/$type";
         $fields = array($value);
         return $this->executeRequest($url, $fields);
     }
 
     /**
      * Find by ID service.
      * See for details:
      *   - https://dadata.ru/api/find-party/
      *   - https://dadata.ru/api/find-bank/
      *   - https://dadata.ru/api/find-address/
      */
     public function findById($type, $fields)
     {
         $url = $this->suggest_url . "/findById/$type";
         return $this->executeRequest($url, $fields);
     }
 
     /**
      * Reverse geolocation service.
      * See https://dadata.ru/api/geolocate/ for details.
      */
     public function geolocate($lat, $lon, $count = 10, $radius_meters = 100)
     {
         $url = $this->suggest_url . "/geolocate/address";
         $fields = array(
             "lat" => $lat,
             "lon" => $lon,
             "count" => $count,
             "radius_meters" => $radius_meters
         );
         return $this->executeRequest($url, $fields);
     }
 
     /**
      * Detect city by IP service.
      * See https://dadata.ru/api/iplocate/ for details.
      */
     public function iplocate($ip)
     {
         $url = $this->suggest_url . "/iplocate/address";
         $fields = array(
             "ip" => $ip
         );
         return $this->executeRequest($url, $fields);
     }
 
     /**
      * Suggest service.
      * See for details:
      *   - https://dadata.ru/api/suggest/address
      *   - https://dadata.ru/api/suggest/party
      *   - https://dadata.ru/api/suggest/bank
      *   - https://dadata.ru/api/suggest/name
      *   - ...
      */
     public function suggest($type, $fields)
     {
         $url = $this->suggest_url . "/suggest/$type";
         return $this->executeRequest($url, $fields);
     }
 
     /**
      * Close connection.
      */
     public function close()
     {
         curl_close($this->handle);
     }
 
     private function executeRequest($url, $fields)
     {
         curl_setopt($this->handle, CURLOPT_URL, $url);
         if ($fields != null) {
             curl_setopt($this->handle, CURLOPT_POST, 1);
             curl_setopt($this->handle, CURLOPT_POSTFIELDS, json_encode($fields));
         } else {
             curl_setopt($this->handle, CURLOPT_POST, 0);
         }
         $result = $this->exec();
         $result = json_decode($result, true);
         return $result;
     }
 
     private function exec()
     {
         $result = curl_exec($this->handle);
         $info = curl_getinfo($this->handle);
         if ($info['http_code'] == 429) {
             throw new TooManyRequests();
         } elseif ($info['http_code'] != 200) {
             throw new Exception('Request failed with http code ' . $info['http_code'] . ': ' . $result);
         }
         return $result;
     }
 }
?>