package com.srv4pos.server.api.hairdresser;
   
   import com.srv4pos.server.api.infrastructure.HttpMethod;
   import com.srv4pos.server.api.infrastructure.StringConnectionWriter;
   import com.srv4pos.server.api.infrastructure.credentials.Credentials;
   import com.srv4pos.server.api.infrastructure.http.HttpHelper;
   import com.srv4pos.server.api.infrastructure.http.Transport;
   import com.srv4pos.server.api.infrastructure.request.StringResponse;
   
  import java.net.URL;
  
  import static com.srv4pos.server.api.infrastructure.EmptyConnectionWriter.EMPTY_CONNECTION_WRITER;
  import static com.srv4pos.server.api.infrastructure.http.HttpHelper.CONTENT_TYPE_APPLICATION_JSON;
  import static com.srv4pos.server.api.infrastructure.request.RequestHelper.requestString;
  import static com.srv4pos.server.api.infrastructure.request.RequestHelper.requestVoid;
  import static java.lang.String.format;
  
  /**
   * Exchange information for Hairdresser entity.
   */
  public class HairdresserService {
      private URL url;
      private Credentials credentials;
      private Transport transport;
  
      /**
       * Constructs the service.
       *
       * @param url         of the server
       * @param credentials to work with the server
       * @param transport   to know the method to reach the server
       */
      public HairdresserService(URL url, Credentials credentials, Transport transport) {
          this.url = url;
          this.credentials = credentials;
          this.transport = transport;
      }
  
      /**
       * Get latest information about hairdresser from the server.
       *
       * @param sellerId of the seller
       * @param version  put value from {@link com.srv4pos.server.api.seller.SellerService#getThisVersion()}. if you don't have any {@link
       *                 com.srv4pos.server.api.seller.SellerInfo} instance, then pass null to return the data anyway
       * @return null if not modified or fresh version of info
       * @see com.srv4pos.server.api.seller.SellerServiceSample
       */
      public HairdresserInfo get(String sellerId, Integer version) {
          StringResponse response = requestString(
                  format("hairdressers/%s", sellerId),
                  HttpMethod.GET,
                  url,
                  credentials.toAuthentication(),
                  HttpHelper.integerToETag(version),
                  null,
                  EMPTY_CONNECTION_WRITER,
                  CONTENT_TYPE_APPLICATION_JSON,
                  transport
          );
          return response == null ? null : HairdresserInfo.fromJsonToHairdresserInfo(response.getContent());
      }
  
      /**
       * Send information about hairdresser to the server to store it.
       *
       * @param version of the seller. it must match to the version of seller on the server
       * @param sellerId       seller-hairdresser id
       * @param hairdresserInfo the data
       * @throws com.srv4pos.server.api.exceptions.VersionConflictJsonException if server has newer data sent from other client before
       * @see com.srv4pos.server.api.seller.SellerServiceSample
       */
      public void put(int version, String sellerId, HairdresserInfo hairdresserInfo) {
          requestVoid(
                  format("hairdressers/%s", sellerId),
                  HttpMethod.PUT,
                  url,
                  credentials.toAuthentication(),
                  HttpHelper.integerToETag(version),
                  null,
                  new StringConnectionWriter(hairdresserInfo.toJson()),
                  CONTENT_TYPE_APPLICATION_JSON,
                  transport
          );
      }
  
      /**
       * Remove hairdresser and all information that concerns hairdresser.
       *
       * @param sellerId identifier of seller
       */
      public void remove(String sellerId) {
          requestVoid(
                  format("hairdressers/%s", sellerId),
                  HttpMethod.DELETE,
                  url,
                  credentials.toAuthentication(),
                  null,
                  null,
                  EMPTY_CONNECTION_WRITER,
                 CONTENT_TYPE_APPLICATION_JSON,
                 transport);
     }
 }