<?php

namespace MGModule\DNSManager2\mgLibs\custom;

use MGModule\DNSManager2\mgLibs\MySQL as mysql;

class RawQueryTableHelper {

    private $items_per_page = 10;
    private $page = 1;
    private $count_all;
    private $count_filtered;
    private $pages_count;
    private $data = array();
    
    /**
     * Klasa ta pomga w generowaniu outputu dla DataTables za pomocą zwykłego query
     * @param string $query
     * @param array $input
     * @param array $columns - dla tych kolumn włączony będzie search oraz sortowanie
     */
    public function __construct($query, $input, $columns) {
//        $columns = array(); //NOT WORKING :(
//        foreach(mysql\query::query("SHOW COLUMNS FROM ($query) t")->fetchAll() as $column)
//            $columns[] = $column['Field'];
        
        $count_all = mysql\query::query("SELECT COUNT(*) FROM ($query) t")->fetchColumn();
        $items_per_page = $input['limit']?:$this->items_per_page;
        $page = floor($input['offset']/$items_per_page);
        
        $order_by = array();
        if(in_array($input['order']['column'], $columns)) {
            $order_by[$input['order']['column']] = $input['order']['dir'];
        }



        $filters = array();
        foreach($input['filter'] as $column => $value)
            if(!empty($value)) {
                $filters[$column] = $value;
            }

        if($input['search']) {
            $search = array();
            foreach($columns as $column) {
                $uid = $column.uniqid();
                $search[] = array(
                    'or' => true,
                    'customQuery' => "`$column` LIKE :$uid",
                    'params' => array(
                        $uid => "%{$input['search']}%",
                    ),
                );
            }

            
            $search = mysql\query::parseConditions($search, $values);

            $filters[] = array(
                'customQuery' => '( ' . $search . ' ) ',
                'params' => $values,
            );
        }



        $count_filtered = mysql\query::count('*', " ($query) t", $filters, $order_by);


        $pages_count = floor($count_filtered/$items_per_page) + 1;
        if($page > $pages_count) 
            $page = $pages_count;
        
        $limit_offset = (int) $input['offset'];

        $this->data = mysql\query::select(array('*'), " ($query) t", $filters, $order_by, $items_per_page, $limit_offset);
        
        $this->page = $page;
        $this->count_all = $count_all;
        $this->count_filtered = $count_filtered;
        $this->items_per_page = $items_per_page;
        $this->pages_count = $pages_count;
    }
    
    public function get() {
        return $this->data->fetchAll();
    }
    
    public function getDataTableArray() {
        $out = array();
        $out['recordsTotal'] = $this->count_all;
        $out['recordsFiltered'] = $this->count_filtered;
        $out['data'] = array();
        return $out;
    }
}