399 lines
17 KiB
PHP
399 lines
17 KiB
PHP
<?php
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// This file is part of the Studyplan plugin for Moodle
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <https://www.gnu.org/licenses/>.
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/**
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* Aggregate course results based on failed/completed states for grades
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* @package local_treestudyplan
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* @copyright 2023 P.M. Kuipers
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* @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace local_treestudyplan\local\aggregators;
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use local_treestudyplan\courseinfo;
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use local_treestudyplan\gradeinfo;
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use local_treestudyplan\studyitem;
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use local_treestudyplan\completion;
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/**
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* Aggregate course results based on failed/completed states for grades
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*/
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class bistate_aggregator extends \local_treestudyplan\aggregator {
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/** @var bool */
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public const DEPRECATED = false;
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/** @var stdClass */
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private $agcfg = null;
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/**
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* Retrieve or initialize current config object
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* @return stdClass
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*/
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private function cfg() {
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if (empty($this->agcfg)) {
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$this->agcfg = (object)[
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'thresh_excellent' => 1.0, // Minimum fraction that must be completed to aggregate as excellent (usually 1.0).
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'thresh_good' => 0.8, // Minimum fraction that must be completed to aggregate as good.
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'thresh_completed' => 0.66, // Minimum fraction that must be completed to aggregate as completed.
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'use_failed' => true, // Support failed completion yes/no.
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'thresh_progress' => 0.33, // Deprecated!
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'accept_pending_as_submitted' => false, // Also count ungraded but submitted .
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];
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}
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return $this->agcfg;
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}
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/**
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* Create new instance of aggregation method
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* @param string $configstr Aggregation configuration string
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*/
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public function __construct($configstr) {
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// Allow public constructor for testing purposes.
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$this->initialize($configstr);
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}
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/**
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* Initialize the aggregation method
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* @param string $configstr Aggregation configuration string
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*/
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protected function initialize($configstr) {
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// First initialize with the defaults.
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foreach (["thresh_excellent", "thresh_good", "thresh_completed", "thresh_progress" ] as $key) {
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$val = intval(get_config('local_treestudyplan', "bistate_{$key}"));
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if ($val >= 0 && $val <= 100) {
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$this->cfg()->$key = floatval($val) / 100;
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}
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}
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foreach (["use_failed", "accept_pending_as_submitted"] as $key) {
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$this->cfg()->$key = boolval(get_config('local_treestudyplan', "bistate_{$key}"));
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}
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// Next, decode json.
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$config = \json_decode($configstr, true);
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if (is_array($config)) {
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// Copy all valid config settings to this item.
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foreach (["thresh_excellent", "thresh_good", "thresh_completed", "thresh_progress" ] as $key) {
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if (array_key_exists($key, $config)) {
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$val = $config[$key];
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if ($val >= 0 && $val <= 100) {
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$this->cfg()->$key = floatval($val) / 100;
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}
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}
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}
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foreach (["use_failed", "accept_pending_as_submitted"] as $key) {
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if (array_key_exists($key, $config)) {
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$this->cfg()->$key = boolval($config[$key]);
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}
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}
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}
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}
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/**
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* Return the current configuration string.
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* @return string Configuration string
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*/
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public function config_string() {
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return json_encode([
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"thresh_excellent" => 100 * $this->cfg()->thresh_excellent,
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"thresh_good" => 100 * $this->cfg()->thresh_good,
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"thresh_completed" => 100 * $this->cfg()->thresh_completed,
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"thresh_progress" => 100 * $this->cfg()->thresh_progress,
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"use_failed" => $this->cfg()->use_failed,
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"accept_pending_as_submitted" => $this->cfg()->accept_pending_as_submitted,
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]);
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}
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/**
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* Determine if aggregation method wants to select gradables
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* @return bool True if aggregation method needs gradables to be selected
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*/
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public function select_gradables() {
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return true;
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}
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/**
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* Determine if aggregation method is deprecated
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* @return bool True if aggregation method is deprecated
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*/
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public function deprecated() {
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return self::DEPRECATED;
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}
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/**
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* Determine if the aggregation method uses manual activity selection,
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* @return bool True if the aggregation method uses manual activity selection
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*/
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public function use_manualactivityselection() {
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return true;
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}
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/**
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* Determine if Aggregation method makes use of "required grades" in a course/module.
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* @return bool True if Aggregation method makes use of "required grades" in a course/module.
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*/
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public function use_required_grades() {
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return true;
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}
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/**
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* Aggregate completed/failed goals into one outcome
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* @param int[] $completions List of completions (completion class constants)
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* @param array $required List of completions indexes that are marked as required
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* @return int Aggregated completion as completion class constant
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*/
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public function aggregate_binary_goals(array $completions, array $required = []) {
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// Function is public to allow access for the testing code.
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// Return te following conditions.
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// Possible states:.
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// - completion::EXCELLENT - At least $threshexcellent fraction of goals are complete and all required goals are met.
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// - completion::GOOD - At least $threshgood fraction of goals are complete and all required goals are met.
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// - completion::COMPLETED - At least $threshcomplete fraction of goals are completed and all required goals are met.
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// - completion::FAILED - At least $threshprogress fraction of goals is not failed.
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// - completion::INCOMPLETE - No goals have been started.
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// - completion::PROGRESS - All other states.
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$total = count($completions);
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$completed = 0;
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$progress = 0;
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$failed = 0;
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$started = 0;
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$totalrequired = 0;
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$requiredmet = 0;
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$minprogress = ($this->cfg()->accept_pending_as_submitted) ? completion::PENDING : completion::PROGRESS;
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foreach ($completions as $index => $c) {
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$completed += ($c >= completion::COMPLETED) ? 1 : 0;
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$progress += ($c >= $minprogress) ? 1 : 0;
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$failed += ($c <= completion::FAILED) ? 1 : 0;
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if (in_array($index, $required)) {
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// Not using count($required) to prevent nonexistant indices in the required list from messing things up.
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$totalrequired += 1;
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if ($c >= completion::COMPLETED) {
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$requiredmet += 1;
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}
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}
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}
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$started = $progress + $failed;
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$allrequiredmet = ($requiredmet >= $totalrequired);
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$fractioncompleted = ($total > 0) ? (floatval($completed) / floatval($total)) : 0.0;
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$fractionprogress = ($total > 0) ? (floatval($progress) / floatval($total)) : 0.0;
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$fractionfailed = ($total > 0) ? (floatval($failed) / floatval($total)) : 0.0;
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$fractionstarted = ($total > 0) ? (floatval($started) / floatval($total)) : 0.0;
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if ($total == 0) {
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return completion::INCOMPLETE;
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}
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if ($fractioncompleted >= $this->cfg()->thresh_excellent && $allrequiredmet) {
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return completion::EXCELLENT;
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} else if ($fractioncompleted >= $this->cfg()->thresh_good && $allrequiredmet) {
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return completion::GOOD;
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} else if ($fractioncompleted >= $this->cfg()->thresh_completed && $allrequiredmet) {
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return completion::COMPLETED;
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} else if ($started == 0) {
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return completion::INCOMPLETE;
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} else {
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return completion::PROGRESS;
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}
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}
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/**
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* Aggregate all completions in a course into one final course completion
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* Possible states:
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* completion::EXCELLENT - Completed with excellent results
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* completion::GOOD - Completed with good results
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* completion::COMPLETED - Completed
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* completion::PROGRESS - Started, but not completed yey
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* completion::FAILED - Failed
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* completion::INCOMPLETE - Not yet started
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* @param courseinfo $courseinfo Courseinfo object for the course to check
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* @param studyitem $studyitem Studyitem object for the course to check
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* @param int $userid Id of user to check this course for
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* @return int Aggregated completion as completion class constant
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*/
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public function aggregate_course(courseinfo $courseinfo, studyitem $studyitem, $userid) {
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$course = $courseinfo->course();
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$coursefinished = ($course->enddate) ? ($course->enddate < time()) : false;
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// Note: studyitem condition config is not used in this aggregator.
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// Loop through all associated gradables and count the totals, completed, etc..
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$completions = [];
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$required = [];
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foreach (gradeinfo::list_studyitem_gradables($studyitem) as $gi) {
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$completions[] = $this->grade_completion($gi, $userid);
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if ($gi->is_required()) {
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// If it's a required grade .
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// Also add it's index in the completion list to the list of required grades .
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$required[] = count($completions) - 1;
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}
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}
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// Combine the aquired completions into one.
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$result = self::aggregate_binary_goals($completions, $required);
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if ($this->cfg()->use_failed && $result == completion::PROGRESS && $coursefinished) {
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return completion::FAILED;
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} else {
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return $result;
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}
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}
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/**
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* Aggregate juncton/filter inputs into one final junction outcome
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* @param int[] $completion List of completion inputs
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* @param studyitem $studyitem Studyitem object for the junction
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* @param int $userid Id of user to check completion for
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* @return int Aggregated completion as completion class constant
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*/
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public function aggregate_junction(array $completion, studyitem $studyitem, $userid = 0) {
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// Aggregate multiple incoming states into one junction or finish.
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// Possible states:.
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// - completion::EXCELLENT - All incoming states are excellent.
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// - completion::GOOD - All incoming states are at least good.
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// - completion::COMPLETED - All incoming states are at least completed.
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// - completion::FAILED - All incoming states are failed.
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// - completion::INCOMPLETE - All incoming states are incomplete.
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// - completion::PROGRESS - All other states.
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$method = strtoupper($studyitem->conditions()); // One of ANY or ALL.
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// First count all states.
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$statecount = completion::count_states($completion);
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$total = count($completion);
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if ($method == "ANY") {
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if ($statecount[completion::EXCELLENT] >= 1) {
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return completion::EXCELLENT;
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} else if ($statecount[completion::GOOD] >= 1) {
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return completion::GOOD;
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} else if ($statecount[completion::COMPLETED] >= 1) {
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return completion::COMPLETED;
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} else if ($statecount[completion::PROGRESS] >= 1) {
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return completion::PROGRESS;
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} else if ($statecount[completion::FAILED] >= 1) {
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return completion::FAILED;
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} else {
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return completion::INCOMPLETE;
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}
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} else { /* default value of ALL */
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if ($total == $statecount[completion::EXCELLENT]) {
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return completion::EXCELLENT;
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} else if ($total == ( $statecount[completion::EXCELLENT]
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+ $statecount[completion::GOOD]) ) {
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return completion::GOOD;
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} else if ($total == ( $statecount[completion::EXCELLENT]
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+ $statecount[completion::GOOD]
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+ $statecount[completion::COMPLETED]) ) {
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return completion::COMPLETED;
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} else if ($statecount[completion::FAILED]) {
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return completion::FAILED;
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} else if ($total == $statecount[completion::INCOMPLETE]) {
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return completion::INCOMPLETE;
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} else {
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return completion::PROGRESS;
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}
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}
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}
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/**
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* Determine completion for a single grade and user
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* @param gradeinfo $gradeinfo Gradeinfo object for grade to check
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* @param mixed $userid Id of user to check completion for
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* @return int Aggregated completion as completion class constant
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*/
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public function grade_completion(gradeinfo $gradeinfo, $userid) {
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global $DB;
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$table = "local_treestudyplan_gradecfg";
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$gradeitem = $gradeinfo->get_gradeitem();
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$grade = $gradeitem->get_final($userid);
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$course = \get_course($gradeitem->courseid); // Fetch course from cache.
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$coursefinished = ($course->enddate) ? ($course->enddate < time()) : false;
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if (!is_object($grade) || empty($grade)) {
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return completion::INCOMPLETE;
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} else if ($grade->finalgrade === null) {
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// On assignments, grade NULL means a submission has not yet been graded, .
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// But on quizes this can also mean a quiz might have been started.
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// Therefor, we treat a NULL result as a reason to check the relevant gradingscanner for presence of pending items.
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// Since we want old results to be visible until a pending item was graded, we only use this state here.
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// Pending items are otherwise expressly indicated by the "pendingsubmission" field in the user model.
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if ($gradeinfo->get_gradingscanner()->pending($userid)) {
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return completion::PENDING;
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} else {
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return completion::INCOMPLETE;
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}
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} else {
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// First determine if we have a grade_config for this scale or this maximum grade.
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$finalgrade = $grade->finalgrade;
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$scale = $gradeinfo->get_scale();
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if (isset($scale)) {
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$gradecfg = $DB->get_record($table, ["scale_id" => $scale->id]);
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} else if ($gradeitem->grademin == 0) {
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$gradecfg = $DB->get_record($table, ["grade_points" => $gradeitem->grademax]);
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} else {
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$gradecfg = null;
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}
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// For point grades, a provided grade pass overrides the defaults in the gradeconfig.
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// For scales, the configuration in the gradeconfig is leading.
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if ($gradecfg && (isset($scale) || $gradeitem->gradepass == 0)) {
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// If so, we need to know if the grade is .
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if ($finalgrade >= $gradecfg->min_completed) {
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// Return completed if completed.
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return completion::COMPLETED;
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} else if ($this->cfg()->use_failed && $coursefinished) {
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// Return failed if failed is enabled and the grade is less than the minimum grade for progress.
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return completion::FAILED;
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} else {
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return completion::PROGRESS;
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}
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} else if ($gradeitem->gradepass > 0) {
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$range = floatval($gradeitem->grademax - $gradeitem->grademin);
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// If no gradeconfig and gradepass is set, use that one to determine config.
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if ($finalgrade >= $gradeitem->gradepass) {
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return completion::COMPLETED;
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} else if ($this->cfg()->use_failed && $coursefinished) {
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// Return failed if failed is enabled and the grade is 1, while there are at leas 3 states.
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return completion::FAILED;
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} else {
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return completion::PROGRESS;
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}
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} else {
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// Blind assumptions if nothing is provided.
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// Over 55% of range is completed.
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// If range >= 3 and failed is enabled, assume that this means failed.
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$g = floatval($finalgrade - $gradeitem->grademin);
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$range = floatval($gradeitem->grademax - $gradeitem->grademin);
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$score = $g / $range;
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if ($score > 0.55) {
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return completion::COMPLETED;
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} else if ($this->use_failed && $coursefinished) {
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// Return failed if failed is enabled and the grade is 1, while there are at leas 3 states.
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return completion::FAILED;
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} else {
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return completion::PROGRESS;
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}
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}
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}
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}
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}
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