<?php
/*
 +--------------------------------------------------------------------+
 | CiviCRM version 4.7                                                |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2015                                |
 +--------------------------------------------------------------------+
 | This file is a part of CiviCRM.                                    |
 |                                                                    |
 | CiviCRM is free software; you can copy, modify, and distribute it  |
 | under the terms of the GNU Affero General Public License           |
 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
 |                                                                    |
 | CiviCRM 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 and the CiviCRM Licensing Exception along                  |
 | with this program; if not, contact CiviCRM LLC                     |
 | at info[AT]civicrm[DOT]org. If you have questions about the        |
 | GNU Affero General Public License or the licensing of CiviCRM,     |
 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
 +--------------------------------------------------------------------+
 */

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC (c) 2004-2015
 * $Id$
 *
 */

/**
 * class to represent the actions that can be performed on a group of contacts
 * used by the search forms
 *
 */
class CRM_Contact_Task {
  const
    GROUP_CONTACTS = 1,
    REMOVE_CONTACTS = 2,
    TAG_CONTACTS = 3,
    REMOVE_TAGS = 4,
    EXPORT_CONTACTS = 5,
    EMAIL_CONTACTS = 6,
    SMS_CONTACTS = 7,
    DELETE_CONTACTS = 8,
    HOUSEHOLD_CONTACTS = 9,
    ORGANIZATION_CONTACTS = 10,
    RECORD_CONTACTS = 11,
    MAP_CONTACTS = 12,
    SAVE_SEARCH = 13,
    SAVE_SEARCH_UPDATE = 14,
    PRINT_CONTACTS = 15,
    LABEL_CONTACTS = 16,
    BATCH_UPDATE = 17,
    ADD_EVENT = 18,
    PRINT_FOR_CONTACTS = 19,
    CREATE_MAILING = 20,
    MERGE_CONTACTS = 21,
    EMAIL_UNHOLD = 22,
    RESTORE = 23,
    DELETE_PERMANENTLY = 24,
    COMMUNICATION_PREFS = 25;

  /**
   * The task array
   *
   * @var array
   */
  static $_tasks = NULL;

  /**
   * The optional task array
   *
   * @var array
   */
  static $_optionalTasks = NULL;

  public static function initTasks() {
    if (!self::$_tasks) {
      self::$_tasks = array(
        self::GROUP_CONTACTS => array(
          'title' => ts('Add Contacts to Group'),
          'class' => 'CRM_Contact_Form_Task_AddToGroup',
        ),
        self::REMOVE_CONTACTS => array(
          'title' => ts('Remove Contacts from Group'),
          'class' => 'CRM_Contact_Form_Task_RemoveFromGroup',
        ),
        self::TAG_CONTACTS => array(
          'title' => ts('Tag Contacts (assign tags)'),
          'class' => 'CRM_Contact_Form_Task_AddToTag',
        ),
        self::REMOVE_TAGS => array(
          'title' => ts('Untag Contacts (remove tags)'),
          'class' => 'CRM_Contact_Form_Task_RemoveFromTag',
        ),
        self::EXPORT_CONTACTS => array(
          'title' => ts('Export Contacts'),
          'class' => array(
            'CRM_Export_Form_Select',
            'CRM_Export_Form_Map',
          ),
          'result' => FALSE,
        ),
        self::EMAIL_CONTACTS => array(
          'title' => ts('Send Email to Contacts'),
          'class' => 'CRM_Contact_Form_Task_Email',
          'result' => TRUE,
        ),
        self::DELETE_CONTACTS => array(
          'title' => ts('Delete Contacts'),
          'class' => 'CRM_Contact_Form_Task_Delete',
          'result' => FALSE,
        ),
        self::RECORD_CONTACTS => array(
          'title' => ts('Record Activity for Contacts'),
          'class' => 'CRM_Activity_Form_Activity',
        ),
        self::SAVE_SEARCH => array(
          'title' => ts('New Smart Group'),
          'class' => 'CRM_Contact_Form_Task_SaveSearch',
          'result' => TRUE,
        ),
        self::SAVE_SEARCH_UPDATE => array(
          'title' => ts('Update Smart Group'),
          'class' => 'CRM_Contact_Form_Task_SaveSearch_Update',
          'result' => TRUE,
        ),
        self::PRINT_CONTACTS => array(
          'title' => ts('Print Selected Rows'),
          'class' => 'CRM_Contact_Form_Task_Print',
          'result' => FALSE,
        ),
        self::LABEL_CONTACTS => array(
          'title' => ts('Mailing Labels'),
          'class' => 'CRM_Contact_Form_Task_Label',
          'result' => TRUE,
        ),
        self::BATCH_UPDATE => array(
          'title' => ts('Batch Update via Profile'),
          'class' => array(
            'CRM_Contact_Form_Task_PickProfile',
            'CRM_Contact_Form_Task_Batch',
          ),
          'result' => TRUE,
        ),
        self::PRINT_FOR_CONTACTS => array(
          'title' => ts('Print PDF Letter for Contacts'),
          'class' => 'CRM_Contact_Form_Task_PDF',
          'result' => TRUE,
        ),
        self::EMAIL_UNHOLD => array(
          'title' => ts('Unhold Emails'),
          'class' => 'CRM_Contact_Form_Task_Unhold',
        ),
        self::COMMUNICATION_PREFS => array(
          'title' => ts('Alter Contact Communication Preferences'),
          'class' => 'CRM_Contact_Form_Task_AlterPreferences',
        ),
        self::RESTORE => array(
          'title' => ts('Restore Contacts'),
          'class' => 'CRM_Contact_Form_Task_Delete',
          'result' => FALSE,
        ),
        self::DELETE_PERMANENTLY => array(
          'title' => ts('Delete Permanently'),
          'class' => 'CRM_Contact_Form_Task_Delete',
          'result' => FALSE,
        ),
      );

      //CRM-16329, if SMS provider is configured show sms action.
      $providersCount = CRM_SMS_BAO_Provider::activeProviderCount();
      if ($providersCount) {
        self::$_tasks[self::SMS_CONTACTS] = array(
          'title' => ts('Send SMS to Contacts'),
          'class' => 'CRM_Contact_Form_Task_SMS',
          'result' => TRUE,
        );
      }

      if (CRM_Contact_BAO_ContactType::isActive('Household')) {
        $label = CRM_Contact_BAO_ContactType::getLabel('Household');
        self::$_tasks[self::HOUSEHOLD_CONTACTS] = array(
          'title' => ts('Add Contacts to %1',
            array(1 => $label)
          ),
          'class' => 'CRM_Contact_Form_Task_AddToHousehold',
        );
      }

      if (CRM_Contact_BAO_ContactType::isActive('Organization')) {
        $label = CRM_Contact_BAO_ContactType::getLabel('Organization');
        self::$_tasks[self::ORGANIZATION_CONTACTS] = array(
          'title' => ts('Add Contacts to %1',
            array(1 => $label)
          ),
          'class' => 'CRM_Contact_Form_Task_AddToOrganization',
        );
      }

      if (CRM_Core_Permission::check('merge duplicate contacts')) {
        self::$_tasks[self::MERGE_CONTACTS] = array(
          'title' => ts('Merge Contacts'),
          'class' => 'CRM_Contact_Form_Task_Merge',
          'result' => TRUE,
        );
      }

      //CRM-4418, check for delete
      if (!CRM_Core_Permission::check('delete contacts')) {
        unset(self::$_tasks[self::DELETE_CONTACTS]);
      }

      //show map action only if map provider and geoprovider are set (Google doesn't need geoprovider)
      // should fix this to be more flexible as providers are added ??
      $config = CRM_Core_Config::singleton();

      if ($config->mapProvider &&
        ($config->mapProvider == 'Google' ||
          ($config->mapProvider == 'OpenStreetMaps' ||
            $config->geoProvider == 'Google'
          )
        )
      ) {
        self::$_tasks[self::MAP_CONTACTS] = array(
          'title' => ts('Map Contacts'),
          'class' => 'CRM_Contact_Form_Task_Map',
          'result' => FALSE,
        );
      }

      if (CRM_Core_Permission::access('CiviEvent')) {
        self::$_tasks[self::ADD_EVENT] = array(
          'title' => ts('Add Contacts to Event'),
          'class' => 'CRM_Event_Form_Participant',
        );
      }

      if (CRM_Core_Permission::access('CiviMail')
        || (CRM_Mailing_Info::workflowEnabled() && CRM_Core_Permission::check('create mailings'))
      ) {
        self::$_tasks[self::CREATE_MAILING] = array(
          'title' => ts('Schedule/Send a Mass Mailing'),
          'class' => 'CRM_Mailing_Form_Task_AdhocMailing',
          'result' => FALSE,
        );
      }

      self::$_tasks += CRM_Core_Component::taskList();

      CRM_Utils_Hook::searchTasks('contact', self::$_tasks);

      asort(self::$_tasks);
    }
  }

  /**
   * These tasks are the core set of tasks that the user can perform
   * on a contact / group of contacts
   *
   * @return array
   *   the set of tasks for a group of contacts
   */
  public static function &taskTitles() {
    self::initTasks();

    $titles = array();
    foreach (self::$_tasks as $id => $value) {
      $titles[$id] = $value['title'];
    }

    // hack unset update saved search
    unset($titles[self::SAVE_SEARCH_UPDATE]);

    if (!CRM_Utils_Mail::validOutBoundMail()) {
      unset($titles[self::EMAIL_CONTACTS]);
      unset($titles[self::CREATE_MAILING]);
    }

    // CRM-6806
    if (!CRM_Core_Permission::check('access deleted contacts') ||
      !CRM_Core_Permission::check('delete contacts')
    ) {
      unset($titles[self::DELETE_PERMANENTLY]);
    }
    asort($titles);
    return $titles;
  }

  /**
   * Show tasks selectively based on the permission level
   * of the user
   *
   * @param int $permission
   * @param bool $deletedContacts
   *   Are these tasks for operating on deleted contacts?.
   *
   * @return array
   *   set of tasks that are valid for the user
   */
  public static function &permissionedTaskTitles($permission, $deletedContacts = FALSE) {
    self::initTasks();
    $tasks = array();
    if ($deletedContacts) {
      if (CRM_Core_Permission::check('access deleted contacts')) {
        $tasks[self::RESTORE] = self::$_tasks[self::RESTORE]['title'];
        if (CRM_Core_Permission::check('delete contacts')) {
          $tasks[self::DELETE_PERMANENTLY] = self::$_tasks[self::DELETE_PERMANENTLY]['title'];
        }
      }
    }
    elseif ($permission == CRM_Core_Permission::EDIT) {
      $tasks = self::taskTitles();
    }
    else {
      $tasks = array(
        self::EXPORT_CONTACTS => self::$_tasks[self::EXPORT_CONTACTS]['title'],
        self::EMAIL_CONTACTS => self::$_tasks[self::EMAIL_CONTACTS]['title'],
        self::LABEL_CONTACTS => self::$_tasks[self::LABEL_CONTACTS]['title'],
      );

      if (isset(self::$_tasks[self::MAP_CONTACTS]) &&
        !empty(self::$_tasks[self::MAP_CONTACTS]['title'])
      ) {
        $tasks[self::MAP_CONTACTS] = self::$_tasks[self::MAP_CONTACTS]['title'];
      }

      if (isset(self::$_tasks[self::CREATE_MAILING]) &&
        !empty(self::$_tasks[self::CREATE_MAILING]['title'])
      ) {
        $tasks[self::CREATE_MAILING] = self::$_tasks[self::CREATE_MAILING]['title'];
      }
    }
    return $tasks;
  }

  /**
   * These tasks get added based on the context the user is in.
   *
   * @return array
   *   the set of optional tasks for a group of contacts
   */
  public static function &optionalTaskTitle() {
    $tasks = array(
      self::SAVE_SEARCH_UPDATE => self::$_tasks[self::SAVE_SEARCH_UPDATE]['title'],
    );
    return $tasks;
  }

  /**
   * @param $value
   *
   * @return array
   */
  public static function getTask($value) {
    self::initTasks();

    if (!CRM_Utils_Array::value($value, self::$_tasks)) {
      // make it the print task by default
      $value = self::PRINT_CONTACTS;
    }
    return array(
      CRM_Utils_Array::value('class', self::$_tasks[$value]),
      CRM_Utils_Array::value('result', self::$_tasks[$value]),
    );
  }

}