package etunicorn;
  
  import org.springframework.web.servlet.ModelAndView;
  import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  
  import javax.servlet.http.HttpServletResponse;

  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;

  
  /**

   * etunicorn-server
   * Copyright © 2017 Le Club Info Polytech Lille
   * Tous droits réservés

   */
  public class GitHeaderInterceptor extends HandlerInterceptorAdapter {
  
      private String version = "inconnue";
  
      public GitHeaderInterceptor() {
          super();
          try {
              String[] commande = {"git", "describe", "--tags", "--dirty"};
              Process p = Runtime.getRuntime().exec(commande);
              BufferedReader output = new BufferedReader(new InputStreamReader(p.getInputStream()));
              p.waitFor();
              this.version = output.readLine();
          } catch(IOException e) {
          } catch (InterruptedException e) {
          }
      }
  
      @Override
      public boolean preHandle(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
          response.addHeader("X-Version", this.version);
          return super.preHandle(request, response, handler);
      }
  
      @Override
      public void postHandle(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
          super.postHandle(request, response, handler, modelAndView);
      }
  
      @Override
      public void afterCompletion(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
          super.afterCompletion(request, response, handler, ex);
      }
  
      @Override
      public void afterConcurrentHandlingStarted(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
          super.afterConcurrentHandlingStarted(request, response, handler);
      }
  }