<?php

namespace ModulesGarden\Servers\ProxmoxCloudVps\Core\UI\Widget\DataTable\DataProviders;

use \Illuminate\Database\Capsule\Manager as DB;
use \ModulesGarden\Servers\ProxmoxCloudVps\Core\UI\Widget\DataTable\DataProviders\DataProvider;

/**
 *
 */
class RawDataQuery
{
    private $query        = null;
    private $params       = [];
    private $limit        = 10;
    private $offset       = 0;
    private $orderColumn  = false;
    private $orderDir     = false;
    private $avalibleCols = [];
    private $toSearch     = false;
    private $response;

    public function __construct($query, $params = [])
    {
        $this->query    = $query;
        $this->params   = $params;
        $this->response = new DataSet();
    }

    public function getData(array $avalibleCols = [])
    {
        $this->avalibleCols = $avalibleCols;
        if ($this->query)
        {
            $this->addSearch();
            $this->addSorting();
            $this->countRawResults();
            $this->addLimit();

            $statement = DB::connection()
                    ->getPdo()
                    ->prepare($this->query);

            $statement->execute($this->params);

            while ($row = $statement->fetch(\PDO::FETCH_ASSOC))
            {
                $this->response->records[] = $row;
            }

            return $this->response;
        }

        return $this->response;
    }

    public function countRawResults()
    {
        $statement = DB::connection()
                ->getPdo()
                ->prepare($this->query);

        $statement->execute($this->params);

        $this->response->fullDataLenght = $statement->rowCount();
    }

    public function addSearch()
    {
        if (!$this->toSearch)
        {
            return false;
        }

        $searchQuery = '';
        foreach ($this->avalibleCols as $column)
        {
            if ($column->searchable === true)
            {
                $searchQuery                 .= 'OR ' . $column->name . ' LIKE :' . $column->name . ' ';
                $this->params[$column->name] = '%' . $this->toSearch . '%';
            }
        }

        if ($searchQuery != '')
        {
            if (substr($searchQuery, 0, 2) === 'OR')
            {
                $searchQuery = substr($searchQuery, 2);
            }

            $this->query .= 'AND ( ' . $searchQuery . ' ) ';
        }
    }

    public function setLimit($limit)
    {
        $this->limit = (int) $limit;
    }

    public function setSearch($toSearch)
    {
        $this->toSearch = $toSearch;
    }

    public function setOffset($offset)
    {
        $this->offset = (int) $offset;
    }

    protected function addLimit()
    {
        $this->query            .= ' LIMIT ' . $this->limit . ' OFFSET ' . $this->offset . ' ';
        $this->response->offset = $this->offset;
    }

    protected function addSorting()
    {
        if ($this->orderColumn && $this->orderDir && $this->isProperColumn($this->orderColumn))
        {
            $this->query .= ' ORDER BY ' . $this->orderColumn . ' ' . $this->orderDir . ' ';
        }
    }

    public function setSorting($colName, $sortDir = DataProvider::SORT_ASC)
    {
        $this->orderColumn = $colName;
        $this->orderDir    = ($sortDir === strtolower(DataProvider::SORT_DESC)) ? DataProvider::SORT_DESC : DataProvider::SORT_ASC;
    }

    protected function isProperColumn($colName)
    {
        foreach ($this->avalibleCols as $column)
        {
            if ($colName === $column->name)
            {
                return true;
            }
        }

        return false;
    }
}
