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<?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/>.
/**
* Contains class mod_h5pactivity\output\result
*
* @package mod_h5pactivity
* @copyright 2020 Ferran Recio
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace mod_h5pactivity\output;
defined('MOODLE_INTERNAL') || die();
use renderable;
use templatable;
use renderer_base;
use stdClass;
/**
* Class to display an attempt tesult in mod_h5pactivity.
*
* @copyright 2020 Ferran Recio
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class result implements renderable, templatable {
/** Correct answer state. */
const CORRECT = 1;
/** Incorrect answer state. */
const INCORRECT = 2;
/** Checked answer state. */
const CHECKED = 3;
/** Unchecked answer state. */
const UNCHECKED = 4;
/** Pass answer state. */
const PASS = 5;
/** Pass answer state. */
const FAIL = 6;
/** Unkown answer state. */
const UNKNOWN = 7;
/** Text answer state. */
const TEXT = 8;
/** @var stdClass result record */
protected $result;
/** @var mixed additional decoded data */
protected $additionals;
/** @var mixed response decoded data */
protected $response;
/** @var mixed correctpattern decoded data */
protected $correctpattern = [];
/**
* Constructor.
*
* @param stdClass $result a h5pactivity_attempts_results record
*/
protected function __construct(stdClass $result) {
$this->result = $result;
if (empty($result->additionals)) {
$this->additionals = new stdClass();
} else {
$this->additionals = json_decode($result->additionals);
}
$this->response = $this->decode_response($result->response);
if (!empty($result->correctpattern)) {
$correctpattern = json_decode($result->correctpattern);
foreach ($correctpattern as $pattern) {
$this->correctpattern[] = $this->decode_response($pattern);
}
}
}
/**
* return the correct result output depending on the interactiontype
*
* @param stdClass $result h5pactivity_attempts_results record
* @return result|null the result output class if any
*/
public static function create_from_record(stdClass $result): ?self {
// Compound result track is omitted from the report.
if ($result->interactiontype == 'compound') {
return null;
}
$classname = "mod_h5pactivity\\output\\result\\{$result->interactiontype}";
$classname = str_replace('-', '', $classname);
if (class_exists($classname)) {
return new $classname($result);
}
return new self($result);
}
/**
* Return a decoded response structure.
*
* @param string $value the current response structure
* @return array an array of reponses
*/
private function decode_response(string $value): array {
// If [,] means a list of elements.
$list = explode('[,]', $value);
// Inside a list element [.] means sublist (pair) and [:] a range.
foreach ($list as $key => $item) {
if (strpos($item, '[.]') !== false) {
$list[$key] = explode('[.]', $item);
} else if (strpos($item, '[:]') !== false) {
$list[$key] = explode('[:]', $item);
}
}
return $list;
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output
* @return stdClass
*/
public function export_for_template(renderer_base $output): stdClass {
$result = $this->result;
$data = (object)[
'id' => $result->id,
'attemptid' => $result->attemptid,
'subcontent' => $result->subcontent,
'timecreated' => $result->timecreated,
'interactiontype' => $result->interactiontype,
'description' => strip_tags($result->description),
'rawscore' => $result->rawscore,
'maxscore' => $result->maxscore,
'duration' => $result->duration,
'completion' => $result->completion,
'success' => $result->success,
];
$result;
$options = $this->export_options();
if (!empty($options)) {
$data->hasoptions = true;
$data->optionslabel = $this->get_optionslabel();
$data->correctlabel = $this->get_correctlabel();
$data->answerlabel = $this->get_answerlabel();
$data->options = array_values($options);
$data->track = true;
}
if (!empty($result->maxscore)) {
$data->score = get_string('score_out_of', 'mod_h5pactivity', $result);
}
return $data;
}
/**
* Return the options data structure.
*
* Result types have to override this method generate a specific options report.
*
* An option is an object with:
* - id: the option ID
* - description: option description text
* - useranswer (optional): what the user answer (see get_answer method)
* - correctanswer (optional): the correct answer (see get_answer method)
*
* @return array of options
*/
protected function export_options(): ?array {
return [];
}
/**
* Return a label for result user options/choices.
*
* Specific result types can override this method to customize
* the result options table header.
*
* @return string to use in options table
*/
protected function get_optionslabel(): string {
return get_string('choice', 'mod_h5pactivity');
}
/**
* Return a label for result user correct answer.
*
* Specific result types can override this method to customize
* the result options table header.
*
* @return string to use in options table
*/
protected function get_correctlabel(): string {
return get_string('correct_answer', 'mod_h5pactivity');
}
/**
* Return a label for result user attempt answer.
*
* Specific result types can override this method to customize
* the result options table header.
*
* @return string to use in options table
*/
protected function get_answerlabel(): string {
return get_string('attempt_answer', 'mod_h5pactivity');
}
/**
* Extract descriptions from array.
*
* @param array $data additional attribute to parse
* @return string[] the resulting strings
*/
protected function get_descriptions(array $data): array {
$result = [];
foreach ($data as $key => $value) {
$description = $this->get_description($value);
$index = $value->id ?? $key;
$index = trim($index);
if (is_numeric($index)) {
$index = intval($index);
}
$result[$index] = (object)['description' => $description, 'id' => $index];
}
ksort($result);
return $result;
}
/**
* Extract description from data element.
*
* @param stdClass $data additional attribute to parse
* @return string the resulting string
*/
protected function get_description(stdClass $data): string {
if (!isset($data->description)) {
return '';
}
$translations = (array) $data->description;
if (empty($translations)) {
return '';
}
// By default, H5P packages only send "en-US" descriptions.
$result = $translations['en-US'] ?? array_shift($translations);
return trim($result);
}
/**
* Return an answer data to show results.
*
* @param int $state the answer state
* @param string $answer the extra text to display (default null)
* @return stdClass with "answer" text and the state attribute to be displayed
*/
protected function get_answer(int $state, string $answer = null): stdClass {
$states = [
self::CORRECT => 'correct',
self::INCORRECT => 'incorrect',
self::CHECKED => 'checked',
self::UNCHECKED => 'unchecked',
self::PASS => 'pass',
self::FAIL => 'fail',
self::UNKNOWN => 'unkown',
self::TEXT => 'text',
];
$state = $states[$state] ?? self::UNKNOWN;
if ($answer === null) {
$answer = get_string('answer_'.$state, 'mod_h5pactivity');
}
$result = (object)[
'answer' => $answer,
$state => true,
];
return $result;
}
}