package fr.plil.sio.persistence.jdbc;
  

  import fr.plil.sio.persistence.api.Group;

  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Repository;
  
  import javax.sql.DataSource;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Statement;
  
  @Repository

  public class GroupRepositoryJdbc implements GroupRepository {

      private static final Logger logger = LoggerFactory.getLogger(GroupRepository.class);

  
      @Autowired
      private DataSource dataSource;
  
      @Override

      public Group findByName(String name) {

          Statement stmt = null;
          ResultSet rs = null;
          try {
              stmt = dataSource.getConnection().createStatement();
              rs = stmt.executeQuery("SELECT * FROM GROUP_T WHERE NAME_C = \'" + name + "\'");
              if (rs.next()) {

                  logger.debug("found group " + name);
                  Group group = new Group();
                  group.setId(rs.getLong("GROUP_ID"));
                  group.setName(rs.getString("NAME_C"));
                  return group;

              } else {
                  logger.debug("not found " + name);
                  return null;
              }
          } catch (SQLException e) {
              throw new UnsupportedOperationException("sql exception", e);
          } finally {
              try {
                  if (rs != null) {
                      rs.close();
                  }
                  if (stmt != null) {
                      stmt.close();
                  }
              } catch (SQLException e) {
                  throw new UnsupportedOperationException("sql exception during close", e);
  
              }
          }
      }
  
      @Override

      public void save(Group group) {

          Statement stmt = null;
          ResultSet rs = null;
          try {
              stmt = dataSource.getConnection().createStatement();

              stmt.executeUpdate("INSERT INTO GROUP_T (NAME_C) VALUES (\'" + group.getName() + "\')",

                      Statement.RETURN_GENERATED_KEYS);
              rs = stmt.getGeneratedKeys();
              if (rs.next()) {

                  group.setId(rs.getLong(1));

              } else {
                  throw new UnsupportedOperationException("default in key access");
              }
          } catch (SQLException e) {
              throw new UnsupportedOperationException("sql exception", e);
          } finally {
              try {
                  if (rs != null) {
                      rs.close();
                  }
                  if (stmt != null) {
                      stmt.close();
                  }
              } catch (SQLException e) {
                  throw new UnsupportedOperationException("sql exception during close", e);
              }
          }
  
      }

  
      @Override
      public void delete(Long id) {

          Statement stmt = null;
          ResultSet rs = null;
          if(id==null){
              throw new IllegalArgumentException();
          }
          try {
              stmt = dataSource.getConnection().createStatement();
              stmt.execute("DELETE FROM USER_T WHERE GROUP_U = " + id);
              stmt.execute("DELETE FROM GROUP_T WHERE  GROUP_ID = " + id);
          } catch (SQLException e) {
              throw new UnsupportedOperationException("sql exception", e);
          } finally {
              try {
                  if (rs != null) {
                      rs.close();
                  }
                  if (stmt != null) {
                      stmt.close();
                  }
              } catch (SQLException e) {
                  throw new UnsupportedOperationException("sql exception during close", e);
              }
          }

      }

  }