<?php

class search {
    
    private $PDO;
    
    public function __construct() {
        global $PDO;
        
        $this->PDO = $PDO;
        $this->PDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    }
    
    public function query () {
        $txt = $_POST['txt']??'';
        
        // search by NAME, LABEL, TXT
        $query = 'SELECT id, block, name, label FROM l_ess_item WHERE id=:id ';

        try {
            $stmt = $this->PDO->prepare($query);
            $stmt->execute(array($id));

            // let's make it easier to format by doing it here instead of in SQL
            if ($r = $stmt->fetch(PDO::FETCH_ASSOC)) {
                // return json array so the client forms it

                return array (
                    'id' => $r['id'], 
                    'name' => $r['name'], 
                    'label' => $r['label'], 
                    'block' => $r['block']);

            }
        }
        catch (exception $ex) {
            common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
        }        
    }

    public function txtSearch($suggestions=false) {
        $back = array(); // this we return
        $txt = $_POST['txt']??'';
        
        if (strlen ($txt) > 0) {        
            // search by NAME, LABEL, TXT
            $query = 'SELECT DISTINCT '
                    ."id, block, name, label, txt, 100 as factor FROM l_ess_item WHERE name LIKE (?) UNION SELECT "
                    ."id, block, name, label, txt, 80 as factor FROM l_ess_item where label LIKE (?) UNION SELECT "
                    ."id, block, name, label, txt, 60 as factor FROM l_ess_item where txt LIKE (?) UNION SELECT "
                    ."id, block, name, label, txt, 40 as factor FROM l_ess_item where name LIKE (?) UNION SELECT "
                    ."id, block, name, label, txt, 20 as factor FROM l_ess_item where label LIKE (?) UNION SELECT "
                    ."id, block, name, label, txt, 10 as factor FROM l_ess_item where txt LIKE (?) "
                    ."ORDER BY factor desc " .($suggestions == true?' limit 10':'');
            
            try {
                $stmt = $this->PDO->prepare($query);
                $txta= $txt .'%';
                $txtb= '%' .$txt .'%';
                
                $stmt->execute(array($txta, $txta, $txta, $txtb, $txtb, $txtb));
                
                while ($r = $stmt->fetch(PDO::FETCH_ASSOC)) {

                    // return json array so the client forms it as they wish
                    $back[] = array (
                        'id' => $r['id'], 
                        'name' => $r['name'], 
                        'label' => $r['label'], 
                        'block' => $r['block'],
                        'txt' => $r['txt']);

                }
                return $back;
                
            }
            catch (exception $ex) {
                common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
            }            
        }
    }
    
    public function basicSearch() {
        
        return '<div><a onclick="#">Prvi predlog</a></div>';
        
    }
    
}