<?php

namespace oat\tao\model\Tree;

use common_Exception;
use core_kernel_classes_Class;
use oat\tao\helpers\TreeHelper;
use Request;
use tao_helpers_Uri;
use oat\generis\model\OntologyRdfs;

class GetTreeRequest
{
    const DEFAULT_LIMIT = 10;
    const DEFAULT_ORDERDIR = 'asc';

    /** @var  core_kernel_classes_Class */
    protected $class;

    /** @var  int */
    protected $limit;

    /** @var  int */
    protected $offset;

    /** @var  bool */
    protected $showInstance;

    /** @var  bool */
    protected $hideNode;

    /** @var  array */
    protected $openNodes;

    /** @var  array */
    protected $resourceUrisToShow;

    /** @var  array */
    protected $filters = [];

    /** @var  array */
    protected $filtersOptions = [];

    /**
     * GetTreeRequest constructor.
     * @param core_kernel_classes_Class $class
     * @param int $limit
     * @param int $offset
     * @param bool $showInstance
     * @param bool $hideNode
     * @param array $openNodes
     * @param array $resourceUrisToShow
     * @param array $filtersOptions
     * @param \core_kernel_classes_Property[] $filters Properties to filter tree resources
     */
    public function __construct($class, $limit, $offset, $showInstance, $hideNode, array $openNodes, array $resourceUrisToShow = [], $filtersOptions = [], array $filters = [])
    {
        $this->class = $class;
        $this->limit = $limit;
        $this->offset = $offset;
        $this->showInstance = $showInstance;
        $this->hideNode = $hideNode;
        $this->openNodes = $openNodes;
        $this->resourceUrisToShow = $resourceUrisToShow;
        $this->filters = $filters;
        $this->filtersOptions = $filtersOptions;
    }

    /**
     * @param Request $request
     * @return GetTreeRequest
     *
     * @throws common_Exception
     */
    public static function create(Request $request)
    {

        if ($request->hasParameter('classUri')) {
            $classUri = tao_helpers_Uri::decode($request->getParameter('classUri'));
            $class = new core_kernel_classes_Class($classUri);
            $hideNode = true;
        } elseif ($request->hasParameter('rootNode')) {
            $class = new core_kernel_classes_Class($request->getParameter('rootNode'));
            $hideNode = false;
        } else {
            throw new common_Exception('Missing node information for ' . __FUNCTION__);
        }

        $openNodes = [$class->getUri()];
        $openNodesParameter = $request->getParameter('openNodes');
        $openParentNodesParameter = $request->getParameter('openParentNodes');

        if ($request->hasParameter('openNodes') && is_array($openNodesParameter)) {
            $openNodes = array_merge($openNodes, $openNodesParameter);
        } elseif ($request->hasParameter('openParentNodes') && is_array($openParentNodesParameter)) {
            $childNodes = $openParentNodesParameter;
            $openNodes = TreeHelper::getNodesToOpen($childNodes, $class);
        }

        $limit = $request->hasParameter('limit') ? $request->getParameter('limit') : self::DEFAULT_LIMIT;
        $offset = $request->hasParameter('offset') ? $request->getParameter('offset') : 0;
        $showInstance = $request->hasParameter('hideInstances') ? !$request->getParameter('hideInstances') : true;
        $orderProp = $request->hasParameter('order') ? $request->getParameter('order') : OntologyRdfs::RDFS_LABEL;
        $orderDir = $request->hasParameter('orderdir') ? $request->getParameter('orderdir') : self::DEFAULT_ORDERDIR;

        $filterProperties = [];
        if ($request->hasParameter('filterProperties')) {
            $filterProperties = $request->getParameter('filterProperties');
            if (!is_array($filterProperties)) {
                $filterProperties = [];
            }
        }

        return new self(
            $class,
            $limit,
            $offset,
            $showInstance,
            $hideNode,
            $openNodes,
            [],
            [
                'order' => [
                    $orderProp => $orderDir
                ]
            ],
            $filterProperties
        );
    }

    /**
     * @return core_kernel_classes_Class
     */
    public function getClass()
    {
        return $this->class;
    }

    /**
     * @return int
     */
    public function getLimit()
    {
        return $this->limit;
    }

    /**
     * @return int
     */
    public function getOffset()
    {
        return $this->offset;
    }

    /**
     * @return bool
     */
    public function isShowInstance()
    {
        return $this->showInstance;
    }

    /**
     * @return bool
     */
    public function isHideNode()
    {
        return $this->hideNode;
    }

    /**
     * @return array
     */
    public function getOpenNodes()
    {
        return $this->openNodes;
    }

    /**
     * @return array
     */
    public function getResourceUrisToShow()
    {
        return $this->resourceUrisToShow;
    }

    /**
     * @return array
     */
    public function getFilters()
    {
        return $this->filters;
    }

    /**
     * @param array $filters
     */
    public function setFilters($filters)
    {
        $this->filters = $filters;
    }

    /**
     * @return array
     */
    public function getFiltersOptions()
    {
        return $this->filtersOptions;
    }

    /**
     * @param array $filtersOptions
     */
    public function setFiltersOptions($filtersOptions)
    {
        $this->filtersOptions = $filtersOptions;
    }
}