/*
 * Copyright (C) 2015 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.exoplatform.task.management.controller;

import javax.inject.Inject;

import java.util.Arrays;
import java.util.List;

import juzu.MimeType;
import juzu.Resource;
import juzu.Response;
import juzu.impl.common.Tools;
import juzu.request.SecurityContext;

import org.exoplatform.commons.juzu.ajax.Ajax;
import org.exoplatform.commons.utils.HTMLEntityEncoder;
import org.exoplatform.commons.utils.ListAccess;
import org.exoplatform.services.organization.OrganizationService;
import org.exoplatform.services.security.ConversationState;
import org.exoplatform.services.security.Identity;
import org.exoplatform.task.domain.Label;
import org.exoplatform.social.core.space.model.Space;
import org.exoplatform.social.core.space.spi.SpaceService;
import org.exoplatform.task.domain.Project;
import org.exoplatform.task.dto.ProjectDto;
import org.exoplatform.task.exception.EntityNotFoundException;
import org.exoplatform.task.exception.NotAllowedOperationOnEntityException;
import org.exoplatform.task.exception.UnAuthorizedOperationException;
import org.exoplatform.task.legacy.service.ProjectService;
import org.exoplatform.task.legacy.service.TaskService;
import org.exoplatform.task.legacy.service.UserService;
import org.exoplatform.task.util.ListUtil;
import org.exoplatform.task.util.UserUtil;
import org.gatein.common.text.EntityEncoder;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * @author <a href="mailto:tuyennt@exoplatform.com">Tuyen Nguyen The</a>.
 */
public class UserController extends AbstractController {
    @Inject
    OrganizationService orgService;

    @Inject
    private UserService userService;

    @Inject
    private TaskService taskService;

    @Inject
    private SpaceService sService;

    @Inject
    private ProjectService projectService;

    @Resource
    @Ajax
    @MimeType.JSON
    public Response findUser(String query, Long projectId) throws Exception { // NOSONAR
      ListAccess<org.exoplatform.task.model.User> list = userService.findUserByName(query);
      JSONArray array = new JSONArray();
      Space space = projectId != 0 && projectService.getProject(projectId) != null ? sService.getSpaceByPrettyName(projectService.getProject(projectId).getName()) : null;
      Space spaceProject = getSpaceProject(projectId);
      for(org.exoplatform.task.model.User u : list.load(0, UserUtil.SEARCH_LIMIT)) {
        JSONObject json = new JSONObject();
        if ((space == null || sService.isMember(space, u.getUsername())) && (spaceProject == null || sService.isMember(spaceProject, u.getUsername()))) {
          json.put("id", u.getUsername());
          json.put("text", u.getDisplayName());
          json.put("avatar", u.getAvatar());
          array.put(json);
        }
      }
      return Response.ok(array.toString());
    }

    @Resource
    @Ajax
    @MimeType.JSON
    public Response findUsersToMention(String query, Long projectId) throws Exception { // NOSONAR
      ListAccess<org.exoplatform.task.model.User> list = userService.findUserByName(query);
      JSONArray array = new JSONArray();
      Space space = projectId != 0 && projectService.getProject(projectId) != null ? sService.getSpaceByPrettyName(projectService.getProject(projectId).getName()) : null;
      Space spaceProject = getSpaceProject(projectId);
      for(org.exoplatform.task.model.User u : list.load(0, UserUtil.SEARCH_LIMIT)) {
        JSONObject json = new JSONObject();
        if ((space == null || sService.isMember(space, u.getUsername())) && (spaceProject == null || sService.isMember(spaceProject, u.getUsername()))) {
          json.put("id", "@" + u.getUsername());
          json.put("name", u.getDisplayName());
          json.put("avatar", u.getAvatar());
          json.put("type", "contact");
          array.put(json);
        }
      }
      return Response.ok(array.toString());
    }

    @Resource
    @Ajax
    @MimeType.JSON
    public Response getDisplayNameOfUser(String usernames) throws JSONException {
      if(usernames != null) {
        JSONArray array = new JSONArray();
        for(String username : usernames.split(",")) {
          org.exoplatform.task.model.User user = userService.loadUser(username);
          JSONObject json = new JSONObject();
          json.put("id", user.getUsername());
          json.put("text", user.getDisplayName());
          json.put("avatar", user.getAvatar());
          json.put("deleted", user.isDeleted());
          json.put("enable", user.isEnable());
          array.put(json);
        }
        return Response.ok(array.toString()).withCharset(Tools.UTF_8);

      } else {
        return Response.ok("[]");
      }
    }

    @Resource
    @Ajax
    @MimeType("text/plain")
    public Response showHiddenProject(Boolean show, SecurityContext securityContext) {
        userService.showHiddenProject(securityContext.getRemoteUser(), show);
        return Response.ok("Update successfully");
    }

    @Resource
    @Ajax
    @MimeType("text/plain")
    public Response hideProject(Long projectId, Boolean hide) throws EntityNotFoundException, NotAllowedOperationOnEntityException, UnAuthorizedOperationException {
      Identity identity = ConversationState.getCurrent().getIdentity();
      try {
        userService.hideProject(identity, projectId, hide);
      } catch (NotAllowedOperationOnEntityException ex) {
        throw new UnAuthorizedOperationException(projectId, Project.class, getNoPermissionMsg());
      }
      return Response.ok("Hide project successfully");
    }

    @Resource
    @Ajax
    @MimeType.JSON
    public Response findLabel(SecurityContext securityContext) throws JSONException {
      String username = securityContext.getRemoteUser();
      ListAccess<Label> tmp = taskService.findLabelsByUser(username);
      List<Label> labels = Arrays.asList(ListUtil.load(tmp, 0, -1));

      JSONArray array = new JSONArray();
      if (labels != null) {
        for (Label label : labels) {
          JSONObject json = new JSONObject();
          json.put("id", label.getId());
          json.put("text", label.getName());
          json.put("name", label.getName());
          json.put("color", label.getColor());

          array.put(json);
        }
      }
      return Response.ok(array.toString()).withCharset(Tools.UTF_8);
    }

    private Space getSpaceProject(Long projectId) {
      for (String manager : projectService.getManager(projectId)) {
        int index = manager.indexOf(':');
        if (index > -1) {
          String projectGroupId = manager.substring(index + 1);
          return sService.getSpaceByGroupId(projectGroupId);
        }
      }
      return null;
    }
}
