<?php
// This file is part of the Studyplan plugin for Moodle
//
// 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 <https://www.gnu.org/licenses/>.
/**
 * Handle badge information
 * @package    local_treestudyplan
 * @copyright  2023 P.M. Kuipers
 * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace local_treestudyplan;
defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/externallib.php');

use award_criteria;
use \core_badges\badge;
use moodle_url;

/**
 * Handle badge information in the same style as the other classes
 */
class badgeinfo {
    /**
     * Holds database record
     * @var \core_badges\badge
     */
    private $badge;

    /**
     * Maps badge status to strings
     * @var array
     */
    private const STATUSINFO = [
        BADGE_STATUS_INACTIVE => 'inactive',
        BADGE_STATUS_ACTIVE => 'active',
        BADGE_STATUS_INACTIVE_LOCKED => 'inactive',
        BADGE_STATUS_ACTIVE_LOCKED => 'active',
        BADGE_STATUS_ARCHIVED => 'archived',
    ];

    /**
     * Maps badge status to locked or not
     * @var array
     */
    private const LOCKEDINFO = [
        BADGE_STATUS_INACTIVE => 0,
        BADGE_STATUS_ACTIVE => 0,
        BADGE_STATUS_INACTIVE_LOCKED => 1,
        BADGE_STATUS_ACTIVE_LOCKED => 1,
        BADGE_STATUS_ARCHIVED => 1, // We don't want to edit archived badges anyway....     .
    ];

    /**
     * Construct new badgeinfo object
     * @param badge $badge Badge object to use
     */
    public function __construct(badge $badge) {
        $this->badge = $badge;
    }

    /**
     * Return full name
     * @return string
     */
    public function name() {
        return $this->badge->name;
    }

    /**
     * Get the badge id from the badge name
     * @param string $name Badge name
     * @return int Badge id
     */
    public static function id_from_name($name) {
        global $DB;

        return $DB->get_field("badge", "id", ['name' => $name]);
    }

    /**
     * Check if a given badge exists
     * @param int $id Badge id
     * @return bool
     */
    public static function exists($id) {
        global $DB;
        return is_numeric($id) && $DB->record_exists('badge', array('id' => $id));
    }

    /**
     * Webservice structure for editor info
     * @param int $value Webservice requirement constant
     */
    public static function editor_structure($value = VALUE_REQUIRED) : \external_description {
        return new \external_single_structure([
            "id" => new \external_value(PARAM_INT, 'id of badge'),
            "infolink" => new \external_value(PARAM_TEXT, 'badge issue information link', VALUE_OPTIONAL),
            "name" => new \external_value(PARAM_TEXT, 'badge name'),
            "status" => new \external_value(PARAM_TEXT, 'badge status'),
            "locked" => new \external_value(PARAM_TEXT, 'badge lock status'),
            "criteria" => new \external_multiple_structure(
                                new \external_value(PARAM_RAW, 'criteria text'), 'badge criteria', VALUE_OPTIONAL),
            "description" => new \external_value(PARAM_TEXT, 'badge description'),
            "imageurl" => new \external_value(PARAM_TEXT, 'url of badge image'),
            "studentcount" => new \external_value(PARAM_INT,
                                                  'number of studyplan students that can get this badge', VALUE_OPTIONAL),
            "issuedcount" => new \external_value(PARAM_INT,
                                                  'number of studyplan students that have got this badge', VALUE_OPTIONAL),
            "active" => new \external_value(PARAM_BOOL, 'badge is available'),
        ], "Badge info", $value);
    }

    /**
     * Webservice model for editor info
     * @param int[] $studentlist List of user id's to use for checking issueing progress within a study plan
     * @return array Webservice data model
     */
    public function editor_model(array $studentlist = null) {
        if ($this->badge->type == BADGE_TYPE_SITE) {
            $context = \context_system::instance();
        } else {
            $context = \context_course::instance($this->badge->courseid);
        }
        // If the user is viewing another user's badge and doesn't have the right capability return only part of the data.

        $criteria = [];
        foreach ($this->badge->get_criteria() as $bc) {
            $criteria[] = $bc->get_title()." ".$bc->get_details();
        }
        $model = [
            'id' => $this->badge->id,
            'infolink' => (new \moodle_url('/badges/overview.php', ['id' => $this->badge->id]))->out(false),
            'name' => $this->badge->name,
            'status' => self::STATUSINFO[$this->badge->status],
            'locked' => self::LOCKEDINFO[$this->badge->status],
            'criteria' => $criteria,
            'description' => $this->badge->description,
            'imageurl' => \moodle_url::make_pluginfile_url($context->id,
                                            'badges', 'badgeimage', $this->badge->id, '/', 'f1')->out(false),
            "active" => $this->badge->is_active(),
        ];

        // Add badge issue stats if a studentlist is attached to the request.
        if (!empty($studentlist) && is_array($studentlist)) {
            $model['studentcount'] = count($studentlist);
            $model['issuedcount'] = $this->count_issued($studentlist);
        }

        return $model;
    }

    /**
     * Webservice structure for userinfo
     * @param int $value Webservice requirement constant
     */
    public static function user_structure($value = VALUE_REQUIRED) : \external_description {
        return new \external_single_structure([
            "id" => new \external_value(PARAM_INT, 'id of badge'),
            "infolink" => new \external_value(PARAM_TEXT, 'badge issue information link', VALUE_OPTIONAL),
            "name" => new \external_value(PARAM_TEXT, 'badge name'),
            "completion" => self::badge_completion_structure(VALUE_OPTIONAL),
            "description" => new \external_value(PARAM_TEXT, 'badge description'),
            "imageurl" => new \external_value(PARAM_TEXT, 'url of badge image'),
            "issued" => new \external_value(PARAM_BOOL, 'badge is issued'),
            "dateissued" => new \external_value(PARAM_TEXT, 'date the badge was issued', VALUE_OPTIONAL),
            "dateexpire" => new \external_value(PARAM_TEXT, 'date the badge will expire', VALUE_OPTIONAL),
            "uniquehash" => new \external_value(PARAM_TEXT, 'badge issue hash', VALUE_OPTIONAL),
            "issuedlink" => new \external_value(PARAM_TEXT, 'badge issue information link', VALUE_OPTIONAL),
            "active" => new \external_value(PARAM_BOOL, 'badge is available'),
        ], "Badge info", $value);
    }

    /**
     * Webservice model for user info
     * @param int $userid ID of user to check specific info for
     * @return array Webservice data model
     */
    public function user_model($userid) {
        global $DB;
        if ($this->badge->type == BADGE_TYPE_SITE) {
            $context = \context_system::instance();
        } else {
            $context = \context_course::instance($this->badge->courseid);
        }

        $issued = $this->badge->is_issued($userid);

        // If the user is viewing another user's badge and doesn't have the right capability return only part of the data.

        $badge = [
            'id' => $this->badge->id,
            'name' => $this->badge->name,
            'description' => $this->badge->description,
            'imageurl' => \moodle_url::make_pluginfile_url($context->id,
                                                           'badges',
                                                           'badgeimage',
                                                           $this->badge->id, '/', 'f1'
                                                           )->out(false),
            'completion' => $this->badge_completion_data($userid),
            'issued' => $issued,
            'infolink' => (new \moodle_url('/badges/overview.php', ['id' => $this->badge->id]))->out(false),
            "active" => $this->badge->is_active(),
        ];


        if ($issued) {
            $issueinfo = $DB->get_record('badge_issued', array('badgeid' => $this->badge->id, 'userid' => $userid));
            $badge['dateissued'] = date("Y-m-d", $issueinfo->dateissued);
            if ($issueinfo->expiredate) {
                $badge['dateexpire'] = date("Y-m-d", $issueinfo->dateexpire);
            }
            $badge['uniquehash'] = $issueinfo->uniquehash;
            $badge['issuedlink'] = (new \moodle_url('/badges/badge.php', ['hash' => $issueinfo->uniquehash]))->out(false);
        }

        return $badge;
    }


    protected function badge_completion_structure($value) {
        return new \external_single_structure([
            "types" => new \external_multiple_structure(new \external_single_structure([
                'criteria' => new \external_multiple_structure(new \external_single_structure([
                    "title" => new \external_value(PARAM_RAW, 'criterion title'),
                    "description" => new \external_value(PARAM_RAW, 'criterion description'),
                    "link"=> new \external_value(PARAM_RAW, 'link to criterion resource',VALUE_OPTIONAL),
                    "requirements" => new \external_multiple_structure(new \external_single_structure([
                        "title" => new \external_value(PARAM_RAW, 'requirment title'),
                        "completed" => new \external_value(PARAM_BOOL, 'criterion is completed or not', VALUE_OPTIONAL),
                    ]), "criterion specific requirements", VALUE_OPTIONAL),
                    "completed" => new \external_value(PARAM_BOOL, 'criterion is completed or not'),
                ]),'specific criteria'),
                "title" => new \external_value(PARAM_RAW, 'type title'),
                "aggregation" => new \external_value(PARAM_TEXT, 'any|all'),
                "count" => new \external_value(PARAM_INT, 'effective number of critera for type progress'),
                "progress" => new \external_value(PARAM_INT, 'effective number of completed criteria for type progress'),
                "fraction" => new \external_value(PARAM_FLOAT, 'fraction of completed type criteria as float'),
            ]), "criteria types",VALUE_OPTIONAL),
            "aggregation" => new \external_value(PARAM_TEXT, 'any|all'),
            "count" => new \external_value(PARAM_INT, 'total number of critera for progress'),
            "progress" => new \external_value(PARAM_INT, 'number of completed criteria for progress'),
            "fraction" => new \external_value(PARAM_FLOAT, 'fraction of completed criteria as float'),
            "title" => new \external_value(PARAM_RAW, 'completion title'),
        ],'badge completion information', $value);
    }

    protected function badge_completion_data($userid) : array {

        $count = 0;
        $progress = 0;
        $fraction = 0;
        
        $badgeagg = $this->badge->get_aggregation_method();
        $types = [];

        foreach ($this->badge->criteria as $type => $bc) {
            if ($type != BADGE_CRITERIA_TYPE_OVERALL) {
                $typeagg = $this->badge->get_aggregation_method($type);
                $typecrit = $this->get_award_subcriteria($bc,$userid);
            
                $typecount = count($typecrit);
                $typeprogress = 0;
                foreach ($typecrit as $subcrit) {
                    // Quickly check if the subcriteria are completed.
                    if ($subcrit["completed"]) {
                        $typeprogress++;
                    }
                }

                // Determine how to process the progress data, depending on the TYPE's aggregation.
                if ($typeagg == BADGE_CRITERIA_AGGREGATION_ANY) {
                    $typecount = 1;
                    $typeprogress = ($typeprogress > 0)?1:0;
                }

                // Determine how to patch this data into the overall progress numbers, depending on the OVERALL aggregation.
                if($badgeagg == BADGE_CRITERIA_AGGREGATION_ANY) {
                    /*  If ANY completion overall, count only the criteria type with the highest completion percentage -.
                        Overwrite data if current type is more complete */
                    $typefraction = ($typecount > 0)?($typeprogress / $typecount):0;
                    if ($typefraction > $fraction || ($fraction == 0 && $typecount > $count)) {
                        $fraction = $typefraction;
                        $count = $typecount;
                        $progress = $typeprogress;
                    }
                } else {
                    /* If ALL completion overall, just add it up to the total */
                    $count += $typecount;
                    $progress += $typeprogress;
                }

                $aggrgation_handle = ($typeagg == BADGE_CRITERIA_AGGREGATION_ALL)?"all":"any";
                $typeinfo = [
                    'title' => ucfirst(get_string("criteria_descr_$type","badges", get_string($aggrgation_handle,"core"))),
                    'aggregation' => $aggrgation_handle,
                    'criteria' => $typecrit,
                    'count' => $typecount,
                    'progress' => $typeprogress,
                    "fraction" => $typefraction,
                ];
                $types[] = $typeinfo;
            }
        }

        $aggrgation_handle = ($badgeagg == BADGE_CRITERIA_AGGREGATION_ALL)?"all":"any";
        return [
            "types" => $types,
            "title" => ucfirst(get_string("criteria_descr_0","badges", mb_strtolower(get_string($aggrgation_handle,"core")))),
            "aggregation" => $aggrgation_handle,
            "count" => $count,
            "progress" => $progress,
            "fraction" => $fraction,
        ];

    }

    /**
     * Count how many of the students in the array have this badge issued
     * @param int[] $studentids List of user id's to check
     * @return int
     */
    public function count_issued(array $studentids) {
        $issuecount = 0;

        foreach ($studentids as $userid) {
            if ($this->badge->is_issued($userid)) {
                $issuecount++;
            }
        }
        return $issuecount;
    }

    
    /**
     * Gets the module instance from the database and returns it.
     * If no module instance exists this function returns false.
     *
     * @return stdClass|bool
     */
    private static function get_mod_instance($cmid) {
        global $DB;
        $rec = $DB->get_record_sql("SELECT md.name
                               FROM {course_modules} cm,
                                    {modules} md
                               WHERE cm.id = ? AND
                                     md.id = cm.module", array($cmid));

        if ($rec) {
            return get_coursemodule_from_id($rec->name, $cmid);
        } else {
            return null;
        }
    }

    /**
     * Gets role name.
     * If no such role exists this function returns null.
     *
     * @return string|null
     */
    private static function get_role_name($rid) {
        global $DB, $PAGE;
        $rec = $DB->get_record('role', array('id' => $rid));

        if ($rec) {
            return role_get_name($rec, $PAGE->context, ROLENAME_BOTH);
        } else {
            return null;
        }
    }

    /**
     * [Description for get_award_subcriteria]
     *
     * @param award_criteria $crit
     * 
     * @return array
     * 
     */
    protected function get_award_subcriteria(award_criteria $crit, $userid = null) : array {
        global $DB, $CFG;
        $list = [];

        if ($crit->criteriatype == BADGE_CRITERIA_TYPE_ACTIVITY) {
            foreach ($crit->params as $p) {
                $mod = self::get_mod_instance($p["module"]);
                if(!$mod) {
                    $title = get_string('error:nosuchmod', 'badges');
                    $description = get_string('error:nosuchmod', 'badges');
                } else {
                    $title =  \html_writer::tag('b', '"' . get_string('modulename', $mod->modname) . ' - ' . $mod->name . '"');;
                    $description = \html_writer::tag('b', '"' . get_string('modulename', $mod->modname) . ' - ' . $mod->name . '"');
                    if (isset($p['bydate'])) {
                        $description .= get_string('criteria_descr_bydate', 'badges', userdate($p['bydate'], get_string('strftimedate', 'core_langconfig')));
                    }
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "requirements" => [
                        'completion' => [
                            'title' =>  get_string('completeactivity','core').
                                        get_string('modulename', $mod->modname) . ' - ' . $mod->name,
                        ]
                    ]
                ];

                if (isset($p["bydate"])) {
                    $subcrit["requirements"]["bydate"] = [
                        'title' => get_string('criteria_descr_bydate', 'badges', userdate($p['bydate'], get_string('strftimedate', 'core_langconfig'))),
                    ];
                }

                if(isset($userid)) {
                    $info = new \completion_info($crit->course);
                    $cm = new \stdClass();
                    $cm->id = $p['module'];
                    $data = $info->get_data($cm, false, $userid);
                    // Successfull completion states depend on the completion settings.
                    if (isset($data->passgrade)) {
                        // Passing grade is required. Don't issue a badge when state is COMPLETION_COMPLETE_FAIL.
                        $completionstates = [COMPLETION_COMPLETE, COMPLETION_COMPLETE_PASS];
                    } else {
                        // Any grade is required. Issue a badge even when state is COMPLETION_COMPLETE_FAIL.
                        $completionstates = [COMPLETION_COMPLETE, COMPLETION_COMPLETE_PASS, COMPLETION_COMPLETE_FAIL];
                    }
                    
                    $modcompleted = in_array($data->completionstate, $completionstates);

                    $subcrit["requirements"]["completion"]["completed"] = $modcompleted;

                    $check_date = true;
                    if (isset($p["bydate"])) {
                        $date = $data->timemodified;
                        $check_date = ($date <= $p['bydate']);
                        $subcrit["requirements"]["bydate"]["completed"] = $check_date;
                    }
    
                    $subcrit["completed"] = $modcompleted && $check_date;
                }
                $list[] = $subcrit;
            }
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_MANUAL) {
            foreach ($crit->params as $p) {
                $role = self::get_role_name($p['role']);
                
                if(!$role) {
                    $title = get_string('error:nosuchrole', 'badges');
                    $description = get_string('error:nosuchrole', 'badges');
                } else {
                    $title = $role;
                    $description = $role;
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "requirements" => []
                ];

                if(isset($userid)) {
                    $crit = $DB->get_record('badge_manual_award', array('issuerrole' => $p['role'], 'recipientid' => $userid, 'badgeid' => $crit->badgeid));
                    $subcrit["completed"] = $crit !== false;
                }
                $list[] = $subcrit;
            }
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_SOCIAL) {
           /* Unused in moodle - probably deprecated */
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_COURSE || $crit->criteriatype == BADGE_CRITERIA_TYPE_COURSESET) {
            if ($crit->criteriatype == BADGE_CRITERIA_TYPE_COURSE) {
                $params = [reset($crit->params)]; // Only use the first parameter
            } else {
                $params = $crit->params;
            }

            foreach ($params as $p) {
                $course = get_course($p["course"]);
                if(!$course) {
                    $description = get_string('error:nosuchcourse',"badges");
                } else {
                    $description = \html_writer::tag('b', '"' . $course->fullname . '"');
                    if (isset($p['bydate'])) {
                        $description .= get_string('criteria_descr_bydate', 'badges', userdate($p['bydate'], get_string('strftimedate', 'core_langconfig')));
                    }
                    if (isset($p['grade'])) {
                        $description .= get_string('criteria_descr_grade', 'badges', $p['grade']);
                    }
                }

                $subcrit = [
                    "title" => $course->fullname,
                    "link" => (new moodle_url($CFG->wwwroot."/course/view.php",["id" => $course->id]))->out(),
                    "description" => $description,
                    "requirements" => [
                        'completion' => [
                            'title' => get_string('coursecompleted','completion'),
                        ]
                    ]
                ];

                if (isset($p["grade"])) {
                    $subcrit["requirements"]["grade"] = [
                        'title' => get_string('criteria_descr_grade','badges',$p["grade"]),

                    ];
                }
                if (isset($p["bydate"])) {
                    $subcrit["requirements"]["bydate"] = [
                        'title' => get_string('criteria_descr_bydate', 'badges', userdate($p['bydate'], get_string('strftimedate', 'core_langconfig'))),
                    ];
                }

                if(isset($userid)) {
                    $coursecompletion = new \completion_completion(["userid" => $userid, "course" => $course->id]);
                    $coursecompleted = $coursecompletion->is_complete();
                    $subcrit["requirements"]["completion"]["completed"] = (bool) $coursecompleted;

                    $check_grade = true;
                    if (isset($p["grade"])) {
                        $grade = \grade_get_course_grade($userid,$course->id);
                        $check_grade = ($grade->grade >= $p['grade']);
                        $subcrit["requirements"]["grade"]["completed"] = (bool) $check_grade;
                    }
                    $check_date = true;
                    if (isset($p["bydate"])) {
                        $check_date = ((bool) $coursecompletion->timecompleted) && ($coursecompletion->timecompleted <= $p["bydate"]);
                        $subcrit["requirements"]["bydate"]["completed"] = (bool) $check_date;
                    }
    
                    $subcrit["completed"] = $coursecompleted && $check_grade && $check_date;
                }
                $list[] = $subcrit;
            }

        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_PROFILE) {
            foreach ($crit->params as $p) {
                if (is_numeric($p['field'])) {
                    $fields = profile_get_custom_fields();
                    // Get formatted field name if such field exists.
                    $fieldname = isset($fields[$p['field']]->name) ?
                        format_string($fields[$p['field']]->name) : null;
                } else {
                    $fieldname = \core_user\fields::get_display_name($p['field']);
                }

                if(!$fieldname) {
                    $title = get_string('error:nosuchfield', 'badges');
                    $description = get_string('error:nosuchfield', 'badges');
                } else {
                    $title = $fieldname;
                    $description = $fieldname;
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "requirements" => []
                ];

                if(isset($userid)) {
                    $join = '';
                    $where = '';
                    $sqlparams = [ 'userid'=> $userid];

                    if (is_numeric($p['field'])) {
                        // This is a custom field.
                        $join .= " LEFT JOIN {user_info_data} uid ON uid.userid = u.id AND uid.fieldid = :fieldid ";
                        $sqlparams["fieldid"] = $p['field'];
                        $where = "uid.id IS NOT NULL";
                    } else if (in_array($p['field'], $this->allowed_default_fields)) {
                        // This is a valid field from {user} table.
                        if ($p['field'] == 'picture') {
                            // The picture field is numeric and requires special handling.
                            $where = "u.{$p['field']} != 0";
                        } else {
                            $where = $DB->sql_isnotempty('u', "u.{$p['field']}", false, true);
                        }
                    }

                    $sql = "SELECT 1 FROM {user} u " . $join . " WHERE u.id = :userid $where";
                    $completed = $DB->record_exists_sql($sql, $sqlparams);
                    $subcrit["completed"] = (bool) $completed;
                }
                $list[] = $subcrit;
            }
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_BADGE) {
            foreach ($crit->params as $p) {
                $badgename = $DB->get_field('badge', 'name', array('id' => $p['badge']));
                if(!$badgename) {
                    $title = get_string('error:nosuchbadge', 'badges');
                    $description = get_string('error:nosuchbadge', 'badges');
                } else {
                    $title = $badgename;
                    $description = \html_writer::tag('b', '"' . $badgename . '"');;
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "link" => (new \moodle_url($CFG->wwwroot."/badges/overview.php",["id" => $p["badge"]]))->out(),
                    "requirements" => []
                ];

                if(isset($userid)) {
                    $badge = $DB->get_record('badge', array('id' => $p['badge']));
                    // See if the user has earned this badge.
                    if($badge) {
                        $awarded = $DB->get_record('badge_issued', array('badgeid' => $p['badge'], 'userid' => $userid));
                        $awarded = isset($awarded);
                    } else {
                        $awarded = false;
                    }
                    $subcrit["completed"] = (bool)$awarded;
                }
                $list[] = $subcrit;
            }
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_COHORT) {
            foreach ($crit->params as $p) {
                $cohortname = $DB->get_field('cohort', 'name', array('id' => $p['cohort']));
                if(!$cohortname) {
                    $title = get_string('error:nosuchcohort', 'badges');
                    $description = get_string('error:nosuchcohort', 'badges');
                } else {
                    $title = \html_writer::tag('b', '"' . format_string($cohortname, true) . '"');
                    $description = \html_writer::tag('b', '"' . format_string($cohortname, true) . '"');
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "requirements" => []
                ];

                if(isset($userid)) {
                    $cohort = $DB->get_record('cohort', array('id' => $p['cohort']));
                    $ismember = (bool) \cohort_is_member($cohort->id, $userid);
                    $subcrit["completed"] = $ismember;
                }
                $list[] = $subcrit;
            }
        } else if ($crit->criteriatype == BADGE_CRITERIA_TYPE_COMPETENCY) {
            foreach ($crit->params as $p) {
                $competency = new \core_competency\competency($p['competency']);
                $competency->set('description', ''); // Will use 'short' description.
                
                /*  Below must be one of the most convoluted ways of calling tool_lp_render_competency_summary.
                    Since I'm pretty sure it's not an actually good idea to implement <plugin>_render_competency_summary 
                    in a custom plugin, even though the system appearently allows you to add competency descriptions,
                    it's probably a case of premature optimization. Still, since this is the way that 
                    'badges/criteria/award_criteria_competency.php does it, we'll copy its example, to avoid
                    differences in display....
                */
                $output = [];
                // Render the competency even if competencies are not currently enabled.
                \core_competency\api::skip_enabled();
                if ($pluginsfunction = get_plugins_with_function('render_competency_summary')) {
                    foreach ($pluginsfunction as $plugintype => $plugins) {
                        foreach ($plugins as $pluginfunction) {
                            $output[] = $pluginfunction($competency, $competency->get_framework(), false, false, true);
                        }
                    }
                }
                \core_competency\api::check_enabled();

                if(count($output) < 1) {
                    $title = get_string('error:nosuchcompetency', 'local_treestudyplan');
                    $description = get_string('error:nosuchcompetency', 'local_treestudyplan');
                } else {
                    /*  Might as wel implode the output, just in case someone was actually stupid enough to implement 
                        <plugin>_render_competency_summary in a custom plugin...
                    */
                    $title = implode(" ",$output);
                    $description = implode(" ",$output);
                }

                $subcrit = [
                    "title" => $title,
                    "description" => $description,
                    "requirements" => []
                ];

                if(isset($userid)) {
                    /*  Slightly modified from award_criteria_competency.php::review()
                        to use criteria api class instead of direct calls....
                    */
                    $proficiency = false;
                    $badge = $DB->get_record('badge', array('id' => $crit->badgeid));
                    if ($badge->type == BADGE_TYPE_SITE) {
                        $uc = \core_competency\api::get_user_competency($userid,$p['competency']);
                        $proficiency = $uc->get('proficiency');
                    } else if ($badge->type == BADGE_TYPE_COURSE) {
                        $uc = \core_competency\api::get_user_competency_in_course($badge->courseid,$userid,$p['competency']);
                        $proficiency = $uc->get('proficiency');
                    }

                    $subcrit["completed"] = (bool) $proficiency;
                }
                $list[] = $subcrit;
            }
        } 

        return $list;
    }

}