<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Read slave helper that exposes selected moodle_read_slave_trait metods
 *
 * @package    core
 * @category   dml
 * @copyright  2018 Srdjan Janković, Catalyst IT
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


< defined('MOODLE_INTERNAL') || die();



> namespace core;




< require_once(__DIR__.'/../../pgsql_native_moodle_database.php');



> use ReflectionProperty;



/**
 * Read slave helper that exposes selected moodle_read_slave_trait metods
 *
 * @package    core
 * @category   dml
 * @copyright  2018 Catalyst IT
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
trait test_moodle_read_slave_trait {

<     // @codingStandardsIgnoreStart


    /**
     * Constructs a mock db driver
     *
     * @param bool $external
     */
    public function __construct($external = false) {

<     // @codingStandardsIgnoreEnd


        parent::__construct($external);


<         $this->wantreadslave = true;
<         $this->dbhwrite = 'test_rw';
<         $this->dbhreadonly = 'test_ro';



>         $rw = fopen("php://memory", 'r+');
>         fputs($rw, 'rw');
> 
>         $ro = fopen("php://memory", 'r+');
>         fputs($ro, 'ro');
> 
>         $this->prefix = 'test_'; // Default, not to leave empty.
> 
>         $rcp = new ReflectionProperty(parent::class, 'wantreadslave');
>         $rcp->setAccessible(true);
>         $rcp->setValue($this, true);
> 
>         $this->dbhwrite = $rw;
>         $this->dbhreadonly = $ro;


        $this->set_db_handle($this->dbhwrite);


<         $this->temptables = new moodle_temptables($this);



>         $this->temptables = new \moodle_temptables($this);
>     }
> 
>     /**
>      * Check db handle
>      * @param string $id
>      * @return bool
>      */
>     public function db_handle_is($id) {
>         $dbh = $this->get_db_handle();
>         rewind($dbh);
>         return stream_get_contents($dbh) == $id;
>     }
> 
>     /**
>      * Check db handle is rw
>      * @return bool
>      */
>     public function db_handle_is_rw() {
>         return $this->db_handle_is('rw');
>     }
> 
>     /**
>      * Check db handle is ro
>      * @return bool
>      */
>     public function db_handle_is_ro() {
>         return $this->db_handle_is('ro');


    }

    /**
     * Upgrade to public
     * @return resource
     */
    public function get_db_handle() {
        return parent::get_db_handle();
    }

    /**
     * Upgrade to public
     * @param string $sql

<      * @param array $params



>      * @param array|null $params


     * @param int $type
     * @param array $extrainfo
     */

<     public function query_start($sql, array $params = null, $type, $extrainfo = null) {



>     public function query_start($sql, ?array $params, $type, $extrainfo = null) {


        return parent::query_start($sql, $params, $type);
    }

    /**
     * Upgrade to public
     * @param mixed $result
     */
    public function query_end($result) {

>         parent::query_end($result);


        $this->set_db_handle($this->dbhwrite);
    }

    /**
     * Upgrade to public
     */
    public function dispose() {
    }
}