package net.sourceforge.seqware.common.business.impl;

import java.util.Set;
import net.sourceforge.seqware.common.business.FileAttributeService;
import net.sourceforge.seqware.common.dao.FileAttributeDAO;
import net.sourceforge.seqware.common.dao.FileDAO;
import net.sourceforge.seqware.common.err.NotFoundException;
import net.sourceforge.seqware.common.model.File;
import net.sourceforge.seqware.common.model.FileAttribute;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
/**
 * <p>FileAttributeServiceImpl class.</p>
 *
 * @author boconnor
 * @version $Id: $Id
 */
@Transactional
public class FileAttributeServiceImpl implements FileAttributeService {

    @Autowired
    private FileAttributeDAO fileAttributeDao;

    @Autowired
    private FileDAO fileDao;

    /** {@inheritDoc} */
    @Override
    public Set<FileAttribute> getFileAttributes(Integer fileSwa) {
        File file = fileDao.findBySWAccession(fileSwa);
        if (file == null) {
            throw new NotFoundException();
        }
        return file.getFileAttributes();
    }

    /** {@inheritDoc} */
    @Override
    public FileAttribute get(Integer fileSwa, Integer id) {
        File file = fileDao.findBySWAccession(fileSwa);
        if (file == null) {
            return null;
        }
        return fileAttributeDao.get(id);
    }

    /** {@inheritDoc} */
    @Override
    public Integer add(Integer fileSwa, FileAttribute fileAttribute) {
        File file = fileDao.findBySWAccession(fileSwa);
        if (file == null) {
            return null;
        }
        fileAttribute.setFile(file);
        return fileAttributeDao.add(fileAttribute);
    }

    /** {@inheritDoc} */
    @Override
    public void update(Integer fileSwa, FileAttribute fileAttribute) {
        File file = fileDao.findBySWAccession(fileSwa);
        if (file == null) {
            throw new NotFoundException();
        }
        FileAttribute currentFileAttribute = fileAttributeDao.get(fileAttribute.getFileAttributeId());
        if (currentFileAttribute == null) {
            throw new NotFoundException();
        }
        if (!currentFileAttribute.getFile().equals(file)) {
            throw new NotFoundException();
        }
        fileAttribute.setFile(file);
        fileAttributeDao.update(fileAttribute);
    }

    /** {@inheritDoc} */
    @Override
    public void delete(Integer fileSwa, Integer fileAttributeId) {
        File file = fileDao.findBySWAccession(fileSwa);
        if (file == null) {
            throw new NotFoundException();
        }
        FileAttribute fileAttribute = fileAttributeDao.get(fileAttributeId);
        if (fileAttribute == null) {
            throw new NotFoundException();
        }
        if (!fileAttribute.getFile().equals(file)) {
            throw new NotFoundException();
        }
        fileAttributeDao.delete(fileAttribute);
    }

}