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.ArrayList;
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;
    
    @Autowired
    private RightRepository rightRepository;
    
    @Autowired
    private UserRepository userRepository;
            
    @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 = findByName(name);
        
        if(group==null){
            return false;
        }
        
        groupRepository.delete(group.getId());
        
        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("groupname cannot be null");
        }
        if(right == null){
           throw new IllegalArgumentException("right cannot be null");
        }
                
        Group group = groupRepository.findByName(groupName);
        
        if (group == null) {
            throw new IllegalArgumentException("group cannot be null");
        }
        
        List<Right> list = group.getRights();
        if(list.contains(right)){
            return false;
        }
        assert list != null;
        list.add(right);
        group.setRights(list);
        
        return true;
    }

    @Override
    public boolean removeRight(String groupName, Right right) {
        if(groupName==null){
            throw new IllegalArgumentException("Groupname cannot be null");
        }
        if(right==null){
            throw new IllegalArgumentException("right cannot be null");
        }
        if(rightRepository.findByName(right.getName()).size()==0){
            throw new IllegalArgumentException("right not in database");
        }
        Group group = groupRepository.findByName(groupName);
        
        if (group == null) {
            throw new IllegalArgumentException("group cannot be null");
        }
        
        List<Right> list = group.getRights();
        list.remove(right);
        group.setRights(list);
        
        return true;
    }
}