package fr.plil.sio.persistence.jpa;
  
  import fr.plil.sio.persistence.api.Group;
  import fr.plil.sio.persistence.api.GroupService;
  import fr.plil.sio.persistence.api.Right;

  import java.util.List;

  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  @Service
  public class GroupServiceJpa implements GroupService {
  
      @Autowired
      private GroupRepository groupRepository;
  
      @Override
      public Group create(String name) {
          if (name == null) {
              throw new IllegalArgumentException("name cannot be null");
          }
          Group group = groupRepository.findByName(name);
          if (group != null) {
              throw new IllegalStateException("a group with the same name already exists");
          }
          group = new Group();
          group.setName(name);
          groupRepository.save(group);
          return group;
      }
  
      @Override
      public boolean delete(String name) {

          if(name == null)
              throw new IllegalArgumentException("Name cannot be null");
          
          Group group = groupRepository.findByName(name);
          if(group == null)
              return false;
          
          groupRepository.delete(group);
          return true;

      }
  
      @Override
      public Group findByName(String name) {
          if (name == null) {
              throw new IllegalArgumentException("name cannot be null");
          }
          return groupRepository.findByName(name);
      }
  
      @Override
      public boolean addRight(String groupName, Right right) {

          
          if(groupName == null)
              throw new IllegalArgumentException("Group name cannot be null");
          
          if(right == null)
              throw new IllegalArgumentException("Right cannot be null");
          
          Group group = groupRepository.findByName(groupName);
          
          if(group == null){
              throw new IllegalStateException("Group not found");
          }
          
          List<Right> list = group.getRights();
          
          if(list.contains(right))
              return false;
          
          list.add(right);
          group.setRights(list);
                          
          return true;

      }
  
      @Override
      public boolean removeRight(String groupName, Right right) {

          
          if(groupName == null)
              throw new IllegalArgumentException("Group name cannot be null");
          
          if(right == null)
              throw new IllegalArgumentException("Right cannot be null");
          
          if(right.getId() == null)
              throw new IllegalArgumentException("Not a right");
          
          Group group = groupRepository.findByName(groupName);
          
          if(group == null)
              throw new IllegalStateException("Group not found");
          
          List<Right> list = group.getRights();
          
          if(list.contains(right)){
              list.remove(right);
              return true;
          }
                          

          return false;
      }
  }