/**
 * Copyright or © or Copr. Ministère Français chargé de la Culture
 * et de la Communication (2013)
 * <p/>
 * contact.gincoculture_at_gouv.fr
 * <p/>
 * This software is a computer program whose purpose is to provide a thesaurus
 * management solution.
 * <p/>
 * This software is governed by the CeCILL license under French law and
 * abiding by the rules of distribution of free software. You can use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info".
 * <p/>
 * As a counterpart to the access to the source code and rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty and the software's author, the holder of the
 * economic rights, and the successive licensors have only limited liability.
 * <p/>
 * In this respect, the user's attention is drawn to the risks associated
 * with loading, using, modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean that it is complicated to manipulate, and that also
 * therefore means that it is reserved for developers and experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systemsand/or
 * data to be ensured and, more generally, to use and operate it in the
 * same conditions as regards security.
 * <p/>
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */
package fr.mcc.ginco.rest.services.utils;

import javax.inject.Inject;
import javax.inject.Named;

import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;

import fr.mcc.ginco.beans.Note;
import fr.mcc.ginco.beans.Role;
import fr.mcc.ginco.beans.ThesaurusConcept;
import fr.mcc.ginco.beans.ThesaurusTerm;
import fr.mcc.ginco.enums.ConceptStatusEnum;
import fr.mcc.ginco.enums.TermStatusEnum;
import fr.mcc.ginco.services.IThesaurusConceptService;
import fr.mcc.ginco.services.IThesaurusTermService;
import fr.mcc.ginco.services.IUserRoleService;

@Component
public class ThesaurusNoteRestServiceUtils {

	@Inject
	@Named("thesaurusConceptService")
	private IThesaurusConceptService thesaurusConceptService;

	@Inject
	@Named("thesaurusTermService")
	private IThesaurusTermService thesaurusTermService;

	@Inject
	@Named("userRoleService")
	private IUserRoleService userRoleService;

	public void checkExpertAccessToNote(Note note) {

		Authentication auth = SecurityContextHolder.getContext()
				.getAuthentication();
		String username = auth.getName();

		if (note.getConcept() != null
				&& userRoleService.hasRole(username, note.getConcept().getThesaurusId(),
				Role.EXPERT)) {
			ThesaurusConcept concept = thesaurusConceptService
					.getThesaurusConceptById(note.getConcept().getIdentifier());
			if (concept != null
					&& concept.getStatus() != ConceptStatusEnum.CANDIDATE
					.getStatus() || concept.getTopConcept()) {
				throw new AccessDeniedException(
						"you-can-save-only-candidate-and-non-top-terms-concepts");
			}
		}
		if (note.getTerm() != null
				&& userRoleService.hasRole(username, note.getTerm().getThesaurusId(),
				Role.EXPERT)) {
			ThesaurusTerm term = thesaurusTermService
					.getThesaurusTermById(note.getTerm().getIdentifier());
			if (term != null
					&& term.getStatus() != TermStatusEnum.CANDIDATE
					.getStatus()) {
				if (term.getConcept() != null) {
					if (term.getConcept().getStatus() != ConceptStatusEnum.CANDIDATE.getStatus()) {
						throw new AccessDeniedException(
								"you-can-save-only-terms-associated-to-candidate-concept");
					}
				} else {
					throw new AccessDeniedException(
							"you-can-save-only-candidate-terms");
				}
			}
		}
	}
}