/*
 *
 * Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under
 * one or more contributor license agreements (see COPYRIGHT for details).
 * The CA licenses this file to you under the GNU Affero General Public
 * License version 3, (the "License"); you may not use this file except in
 * compliance with the License. This file is part of kune.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package cc.kune.core.server.tool;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import cc.kune.core.server.properties.KuneProperties;
import cc.kune.trash.shared.TrashToolConstants;

import com.google.inject.Inject;
import com.google.inject.Singleton;

// TODO: Auto-generated Javadoc
/**
 * The Class ServerToolRegistry.
 * 
 * @author danigb@gmail.com
 * @author vjrj@ourproject.org (Vicente J. Ruiz Jurado)
 */
@Singleton
public class ServerToolRegistry {

  /** The Constant emptyToolList. */
  public static final List<String> emptyToolList = new ArrayList<String>();

  /** The log. */
  static Log log = LogFactory.getLog(ServerToolRegistry.class);

  /** The groups available tools in prop. */
  private final List<String> groupsAvailableToolsInProp;

  /** The groups regis enabled tools. */
  private final List<String> groupsRegisEnabledTools;

  /** The groups regis enabled tools in prop. */
  private final List<String> groupsRegisEnabledToolsInProp;

  /** The tools. */
  private final HashMap<String, ServerTool> tools;

  /** The tools available for groups. */
  private final List<ToolSimple> toolsAvailableForGroups;

  /** The tools available for users. */
  private final List<ToolSimple> toolsAvailableForUsers;

  /** The users available tools in prop. */
  private final List<String> usersAvailableToolsInProp;

  /** The users regis enabled tools. */
  private final List<String> usersRegisEnabledTools;

  /** The users regis enabled tools in prop. */
  private final List<String> usersRegisEnabledToolsInProp;

  /**
   * Instantiates a new server tool registry.
   * 
   * @param kuneProperties
   *          the kune properties
   */
  @Inject
  public ServerToolRegistry(final KuneProperties kuneProperties) {
    tools = new HashMap<String, ServerTool>();
    toolsAvailableForUsers = new ArrayList<ToolSimple>();
    toolsAvailableForGroups = new ArrayList<ToolSimple>();
    usersRegisEnabledTools = new ArrayList<String>();
    groupsRegisEnabledTools = new ArrayList<String>();
    usersAvailableToolsInProp = kuneProperties.getList(KuneProperties.SITE_USER_AVAILABLE_TOOLS);
    groupsAvailableToolsInProp = kuneProperties.getList(KuneProperties.SITE_GROUP_AVAILABLE_TOOLS);
    usersRegisEnabledToolsInProp = kuneProperties.getList(KuneProperties.SITE_USER_REGIST_ENABLED_TOOLS);
    groupsRegisEnabledToolsInProp = kuneProperties.getList(KuneProperties.SITE_GROUP_REGIST_ENABLED_TOOLS);
  }

  /**
   * All.
   * 
   * @return the collection
   */
  public Collection<ServerTool> all() {
    return tools.values();
  }

  /**
   * Gets the.
   * 
   * @param toolName
   *          the tool name
   * @return the server tool
   */
  public ServerTool get(final String toolName) {
    return tools.get(toolName);
  }

  /**
   * Gets the tools available for groups.
   * 
   * @return the tools available for groups
   */
  public List<ToolSimple> getToolsAvailableForGroups() {
    return toolsAvailableForGroups;
  }

  /**
   * Gets the tools available for users.
   * 
   * @return the tools available for users
   */
  public List<ToolSimple> getToolsAvailableForUsers() {
    return toolsAvailableForUsers;
  }

  /**
   * Gets the tools regis enabled for groups.
   * 
   * @return the tools regis enabled for groups
   */
  public List<String> getToolsRegisEnabledForGroups() {
    return groupsRegisEnabledTools;
  }

  /**
   * Gets the tools regis enabled for users.
   * 
   * @return the tools regis enabled for users
   */
  public List<String> getToolsRegisEnabledForUsers() {
    return usersRegisEnabledTools;
  }

  /**
   * Register.
   * 
   * @param tool
   *          the tool
   */
  public void register(final ServerTool tool) {
    final String name = tool.getName();
    final String rootName = tool.getRootName();
    if (tool.getName().equals(TrashToolConstants.TOOL_NAME)) {
      tools.put(name, tool);
      // Trash is a special tool but we don't register it fully
      return;
    }
    final boolean userAvailable = usersAvailableToolsInProp.contains(name);
    final boolean groupAvailable = groupsAvailableToolsInProp.contains(name);
    if (userAvailable && usersRegisEnabledToolsInProp.contains(name)) {
      usersRegisEnabledTools.add(name);
    }
    if (groupAvailable && groupsRegisEnabledToolsInProp.contains(name)) {
      groupsRegisEnabledTools.add(name);
    }
    if (userAvailable || groupAvailable) {
      tools.put(name, tool);
      switch (tool.getTarget()) {
      case forGroups:
        if (groupAvailable) {
          toolsAvailableForGroups.add(new ToolSimple(name, rootName));
        }
        break;
      case forUsers:
        if (userAvailable) {
          toolsAvailableForUsers.add(new ToolSimple(name, rootName));
        }
        break;
      case forBoth:
        if (groupAvailable) {
          toolsAvailableForGroups.add(new ToolSimple(name, rootName));
        }
        if (userAvailable) {
          toolsAvailableForUsers.add(new ToolSimple(name, rootName));
        }
        break;
      }
    }
  }
}