<?php
// {{{ICINGA_LICENSE_CODE}}}
// -----------------------------------------------------------------------------
// This file is part of icinga-web.
// 
// Copyright (c) 2009-2013 Icinga Developer Team.
// All rights reserved.
// 
// icinga-web is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// icinga-web 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 General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with icinga-web.  If not, see <http://www.gnu.org/licenses/>.
// -----------------------------------------------------------------------------
// {{{ICINGA_LICENSE_CODE}}}



/**
 * Model for working with user
 * @author mhein
 */
class AppKit_UserAdminModel extends AppKitBaseModel {

    /**
     * Editable attributes
     * @var string[]
     */
    private static $editableAttributes = array(
        'user_name', 'user_lastname', 'user_firstname',
        'user_email', 'user_disabled', 'user_authsrc','user_authkey'
        // user_description updated manually, see updateUserData(...)
    );

    /**
     * Query for users
     *
     * Human readable query to restrict users
     *
     * @var string
     */
    private $query;

    /**
     * Creates a collection of NsmUser objects and returns it
     * @param boolean $disabled
     * @return Doctrine_Collection
     * @author Marius Hein
     */
    public function getUsersCollection($disabled=false) {
        return $this->getUsersQuery($disabled)->execute();
    }

    /**
     * Apply user restriction to doctrine query
     * @param Doctrine_Query $query
     */
    private function applyQueryToDoctrineQuery(Doctrine_Query $query) {
        if ($this->getQuery()) {
            $queryVal = '%'. $this->getQuery(). '%';
            $queryParams = array($queryVal, $queryVal, $queryVal, $queryVal);
            $query->andWhere(
                '(user_name LIKE ? OR user_firstname LIKE ?'
                    . ' OR user_lastname LIKE ? OR user_email LIKE ?)',
                $queryParams
            );
        }
    }

    /**
     * Creates a collection NsmUser objects within the range $start and $limit and optionally
     * sorts it by param $sort
     * @param boolean $disabled
     * @param integer $start
     * @param integer $limit
     * @param string $sort
     * @param boolean $asc
     *
     * @return Doctrine_Collection
     * @author Jannis Mosshammer
     */
    public function getUsersCollectionInRange($disabled=false,$start = 0,$limit=25,$sort= null,$asc = true) {
        $query = AppKitDoctrineUtil::createQuery()
                 ->from("NsmUser")
                 ->limit($limit)
                 ->offset($start);

        if ($sort) {
            $query->orderBy($sort." ".($asc ? 'ASC' : 'DESC'));
        }

        if ($disabled === false) {
            $query->andWhere('user_disabled=?', array(0));
        }

        $this->applyQueryToDoctrineQuery($query);

        return $query->execute();
    }

    public function getUserCount($disabled=false) {
        $query = AppKitDoctrineUtil::createQuery()
                 ->select("COUNT(u.user_id) count")
                 ->from("NsmUser u");

        if ($disabled === false) {
            $query->andWhere('user_disabled=?', array(0));
        }

        return $query->execute()->getFirst()->get("count");

    }

    /**
     * Returns a unexecuted query for users
     * @param boolean $disabled
     * @return Doctrine_Query
     * @author Marius Hein
     */
    public function getUsersQuery($disabled=false) {
        $query = AppKitDoctrineUtil::createQuery()
                 ->from('NsmUser')
                 ->orderBy('user_name ASC');

        if ($disabled === false) {
            $query->andWhere('user_disabled=?', array(0));
        }

        $this->applyQueryToDoctrineQuery($query);

        return $query;
    }

    /**
     * Returns a userrecord by its id
     * @param integer $id
     * @return NsmUser
     * @throws AppKitDoctrineException
     * @author Marius Hein
     */
    public function getUserById($id) {
        $user = Doctrine::getTable('NsmUser')->find($id);

        if (!$user instanceof NsmUser) {
            throw new AppKitDoctrineException('User not found with this id');
        }

        return $user;
    }

    /**
     * Updates the 'simple' userdata
     * @param NsmUser $user
     * @param AgaviRequestDataHolder $rd
     * @return boolean
     * @author Marius Hein
     */
    public function updateUserData(NsmUser &$user, AgaviRequestDataHolder &$rd) {
        AppKitDoctrineUtil::updateRecordsetFromArray($user, $rd->getParameters(), self::$editableAttributes);

        if (!$user->get("user_password")) {
            $user->set("user_password",AppKitRandomUtil::initRand());
            $user->set("user_salt",AppKitRandomUtil::initRand());
        }

        // Check the principal. Because we have nothing
        // in some situations #3992
        //
        // Create one of missed here
        if (!$user->principalIsValid()) {
            $principal = new NsmPrincipal();
            $principal->principal_type = NsmPrincipal::TYPE_USER;
            $user->principal = $principal;
        }

        // Manually because we want write empty strings
        $user->set('user_description', $rd->getParameter('user_description', new Doctrine_Null()));

        $user->save();

        return true;
    }

    /**
     * Updates the user password, this is only a smart reference
     * @param $user
     * @param $user_password
     * @return unknown_type
     * @throws AppKitException
     * @author Marius Hein
     */
    public function updateUserPassword(NsmUser &$user, $user_password) {
        AppKitRandomUtil::initRand();

        $user->updatePassword($user_password);
        $user->save();

        return true;
    }

    /**
     * Updates the user roles memberships. First
     * revoke all roles, after that assign again
     * @param NsmUser $user
     * @param array $user_roles
     * @return boolean
     * @author Marius Hein
     */
    public function updateUserroles(NsmUser &$user, array $user_roles) {
        // Doctrine is buggy again, so this is done the hard way
        $conn = $this->getContext()->getDatabaseConnection("icinga_web");
        Doctrine_Query::create($conn)
            ->delete("NsmUserRole")
            ->where("usro_user_id = ?",$user->user_id)
            ->execute();
        foreach($user_roles as $role) {
            $roleSetting = new NsmUserRole();
            $roleSetting->usro_role_id = $role;
            $roleSetting->usro_user_id = $user->user_id;
            $roleSetting->save();
        }
        
        return true;
    }

    /**
     * Toggles the activity of a NsmUser object
     * @param NsmUser $user
     * @return boolean
     * @throws AppKitException
     * @author Marius Hein
     */
    public function toggleActivity(NsmUser &$user) {
        AppKitDoctrineUtil::toggleRecordValue($user);
        $user->save();
        return true;
    }

    public function removeUser(NsmUser &$user) {
        try {
            
            /*
            * These are our connections to any cronks
            */
        
            foreach($user->cronkPrincipals as $cp) {
                $re = AppKitDoctrineUtil::createQuery()->delete('CronkPrincipalCronk cpc')
                ->andWhere('cpc.cpc_cronk_id=? and cpc.cpc_principal_id=?', array($cp->cpc_cronk_id, $cp->cpc_principal_id))
                ->execute();
            }
            /*
             * Our cronks
            */
            foreach ($user->cronks as $cronk) {
                /*
                 * All connections to our cronks
                */
                AppKitDoctrineUtil::createQuery()->delete('CronkPrincipalCronk cpc')
                ->andWhere('cpc.cpc_cronk_id=?', array($cronk->cronk_id))
                ->execute();
            
                $cronk->delete();
            }
            
            AppKitDoctrineUtil::getConnection()->beginTransaction();
            
            $this->updateUserroles($user,array());
            $targets = $user->getTargets();
            foreach($targets as $target) {
                $vals = $user->getTargetValues($target->get("target_name"));
                foreach($vals as $value) {
                    $value->delete();
                }
            }
            $principals = $user->getPrincipals();
            
            if (!$principals instanceof NsmPrincipal) {
                foreach($principals as $pr) {
                    if ($pr->NsmPrincipalTarget) {
                        foreach($pr->NsmPrincipalTarget as $pr_t) {
                            $pr_t->delete();
                        }
                    }

                    $pr->delete();
                }
            } else {
                if ($principals->NsmPrincipalTarget) {
                    foreach($principals->NsmPrincipalTarget as $pr_t) {
                        $pr_t->delete();
                    }
                }

                $principals->delete();
            }
            
            $user->delete();
            
            AppKitDoctrineUtil::getConnection()->commit();

            return true;
        } catch (Exception $e) {
            AppKitDoctrineUtil::getConnection()->rollback();
            $this->getContext()->getLoggerManager()->log($e->getMessage());
            throw($e);
        }
    }

    /**
     * Setter for query
     * @param string $query
     */
    public function setQuery($query)
    {
        $this->query = $query;
    }

    /**
     * Getter for query
     * @return string
     */
    public function getQuery()
    {
        if (strlen($this->query) >= 3) {
            return $this->query;
        }

        return null;
    }
}
