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<?php
/* Copyright (C) 2016   Laurent Destailleur     <eldy@users.sourceforge.net>
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

 use Luracast\Restler\RestException;

 require_once DOL_DOCUMENT_ROOT.'/product/stock/class/entrepot.class.php';
 require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';

/**
 * API class for warehouses
 *
 * @access protected
 * @class  DolibarrApiAccess {@requires user,external}
 */
class Warehouses extends DolibarrApi
{
    /**
     * @var array   $FIELDS     Mandatory fields, checked when create and update object
     */
    static $FIELDS = array(
        'label',
    );

    /**
     * @var Entrepot $warehouse {@type Entrepot}
     */
    public $warehouse;

    /**
     * Constructor
     */
    public function __construct()
    {
        global $db, $conf;
        $this->db = $db;
        $this->warehouse = new Entrepot($this->db);
    }

    /**
     * Get properties of a warehouse object
     *
     * Return an array with warehouse informations
     *
     * @param 	int 	$id ID of warehouse
     * @return 	array|mixed data without useless information
     *
     * @throws 	RestException
     */
    public function get($id)
    {
        if (! DolibarrApiAccess::$user->rights->stock->lire) {
            throw new RestException(401);
        }

        $result = $this->warehouse->fetch($id);
        if ( ! $result ) {
            throw new RestException(404, 'warehouse not found');
        }

        if ( ! DolibarrApi::_checkAccessToResource('warehouse', $this->warehouse->id)) {
            throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);
        }

        return $this->_cleanObjectDatas($this->warehouse);
    }

    /**
     * List warehouses
     *
     * Get a list of warehouses
     *
     * @param string	$sortfield	Sort field
     * @param string	$sortorder	Sort order
     * @param int		$limit		Limit for list
     * @param int		$page		Page number
     * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.label:like:'WH-%') and (t.date_creation:<:'20160101')"
     * @return array                Array of warehouse objects
     *
     * @throws RestException
     */
    public function index($sortfield = "t.rowid", $sortorder = 'ASC', $limit = 100, $page = 0, $sqlfilters = '')
    {
        global $db, $conf;

        $obj_ret = array();

        if(! DolibarrApiAccess::$user->rights->stock->lire) {
            throw new RestException(401);
        }

        $sql = "SELECT t.rowid";
        $sql.= " FROM ".MAIN_DB_PREFIX."entrepot as t";
        $sql.= ' WHERE t.entity IN ('.getEntity('stock').')';
        // Add sql filters
        if ($sqlfilters)
        {
            if (! DolibarrApi::_checkFilters($sqlfilters))
            {
                throw new RestException(503, 'Error when validating parameter sqlfilters '.$sqlfilters);
            }
            $regexstring='\(([^:\'\(\)]+:[^:\'\(\)]+:[^:\(\)]+)\)';
            $sql.=" AND (".preg_replace_callback('/'.$regexstring.'/', 'DolibarrApi::_forge_criteria_callback', $sqlfilters).")";
        }

        $sql.= $db->order($sortfield, $sortorder);
        if ($limit)	{
            if ($page < 0)
            {
                $page = 0;
            }
            $offset = $limit * $page;

            $sql.= $db->plimit($limit + 1, $offset);
        }

        $result = $db->query($sql);
        if ($result)
        {
            $i=0;
            $num = $db->num_rows($result);
            $min = min($num, ($limit <= 0 ? $num : $limit));
            while ($i < $min)
            {
                $obj = $db->fetch_object($result);
                $warehouse_static = new Entrepot($db);
                if($warehouse_static->fetch($obj->rowid)) {
                    $obj_ret[] = $this->_cleanObjectDatas($warehouse_static);
                }
                $i++;
            }
        }
        else {
            throw new RestException(503, 'Error when retrieve warehouse list : '.$db->lasterror());
        }
        if( ! count($obj_ret)) {
            throw new RestException(404, 'No warehouse found');
        }
        return $obj_ret;
    }


    /**
     * Create warehouse object
     *
     * @param array $request_data   Request data
     * @return int  ID of warehouse
     */
    public function post($request_data = null)
    {
        if(! DolibarrApiAccess::$user->rights->stock->creer) {
            throw new RestException(401);
        }

        // Check mandatory fields
        $result = $this->_validate($request_data);

        foreach($request_data as $field => $value) {
            $this->warehouse->$field = $value;
        }
        if ($this->warehouse->create(DolibarrApiAccess::$user) < 0) {
            throw new RestException(500, "Error creating warehouse", array_merge(array($this->warehouse->error), $this->warehouse->errors));
        }
        return $this->warehouse->id;
    }

    /**
     * Update warehouse
     *
     * @param int   $id             Id of warehouse to update
     * @param array $request_data   Datas
     * @return int
     */
    public function put($id, $request_data = null)
    {
        if(! DolibarrApiAccess::$user->rights->stock->creer) {
            throw new RestException(401);
        }

        $result = $this->warehouse->fetch($id);
        if ( ! $result ) {
            throw new RestException(404, 'warehouse not found');
        }

        if ( ! DolibarrApi::_checkAccessToResource('stock', $this->warehouse->id)) {
            throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);
        }

        foreach($request_data as $field => $value) {
            if ($field == 'id') continue;
            $this->warehouse->$field = $value;
        }

        if($this->warehouse->update($id, DolibarrApiAccess::$user))
            return $this->get($id);

        return false;
    }

    /**
     * Delete warehouse
     *
     * @param int $id   Warehouse ID
     * @return array
     */
    public function delete($id)
    {
        if(! DolibarrApiAccess::$user->rights->stock->supprimer) {
            throw new RestException(401);
        }
        $result = $this->warehouse->fetch($id);
        if( ! $result ) {
            throw new RestException(404, 'warehouse not found');
        }

        if ( ! DolibarrApi::_checkAccessToResource('stock', $this->warehouse->id)) {
            throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);
        }

        if (! $this->warehouse->delete(DolibarrApiAccess::$user)) {
            throw new RestException(401, 'error when delete warehouse');
        }

        return array(
            'success' => array(
                'code' => 200,
                'message' => 'Warehouse deleted'
            )
        );
    }


    // phpcs:disable PEAR.NamingConventions.ValidFunctionName.PublicUnderscore
    /**
     * Clean sensible object datas
     *
     * @param   Entrepot  $object    Object to clean
     * @return    array    Array of cleaned object properties
     */
    protected function _cleanObjectDatas($object)
    {
        // phpcs:enable
        $object = parent::_cleanObjectDatas($object);

        // Remove the subscriptions because they are handled as a subresource.
        //unset($object->subscriptions);

        return $object;
    }


    /**
     * Validate fields before create or update object
     *
     * @param array|null    $data    Data to validate
     * @return array
     *
     * @throws RestException
     */
    private function _validate($data)
    {
        $warehouse = array();
        foreach (Warehouses::$FIELDS as $field) {
            if (!isset($data[$field]))
                throw new RestException(400, "$field field missing");
            $warehouse[$field] = $data[$field];
        }
        return $warehouse;
    }
}