first commit

question/bank/usage/amd/build/usage.min.js

@@ -0,0 +1,11 @@
+define("qbank_usage/usage",["exports","core/fragment","core/modal_cancel","core/notification","core/str"],(function(_exports,_fragment,_modal_cancel,_notification,Str){function _getRequireWildcardCache(nodeInterop){if("function"!=typeof WeakMap)return null;var cacheBabelInterop=new WeakMap,cacheNodeInterop=new WeakMap;return(_getRequireWildcardCache=function(nodeInterop){return nodeInterop?cacheNodeInterop:cacheBabelInterop})(nodeInterop)}function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj}}
+/**
+   * Usage column selector js.
+   *
+   * @module     qbank_usage/usage
+   * @copyright  2021 Catalyst IT Australia Pty Ltd
+   * @author     Safat Shahin <safatshahin@catalyst-au.net>
+   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+   */Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.init=void 0,_fragment=_interopRequireDefault(_fragment),_modal_cancel=_interopRequireDefault(_modal_cancel),_notification=_interopRequireDefault(_notification),Str=function(obj,nodeInterop){if(!nodeInterop&&obj&&obj.__esModule)return obj;if(null===obj||"object"!=typeof obj&&"function"!=typeof obj)return{default:obj};var cache=_getRequireWildcardCache(nodeInterop);if(cache&&cache.has(obj))return cache.get(obj);var newObj={},hasPropertyDescriptor=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var key in obj)if("default"!==key&&Object.prototype.hasOwnProperty.call(obj,key)){var desc=hasPropertyDescriptor?Object.getOwnPropertyDescriptor(obj,key):null;desc&&(desc.get||desc.set)?Object.defineProperty(newObj,key,desc):newObj[key]=obj[key]}newObj.default=obj,cache&&cache.set(obj,newObj);return newObj}(Str);let modal=null;const usageEvent=async(questionId,contextId,specificVersion)=>{const args={questionid:questionId,specificversion:specificVersion};if(null===modal){try{modal=await _modal_cancel.default.create({title:Str.get_string("usageheader","qbank_usage"),body:_fragment.default.loadFragment("qbank_usage","question_usage",contextId,args),large:!0,show:!0})}catch(e){return void _notification.default.exception(e)}modal.getRoot().on("click","a[href].page-link",(function(e){e.preventDefault();let attr=e.target.getAttribute("href");"#"!==attr&&(args.querystring=attr,modal.setBody(_fragment.default.loadFragment("qbank_usage","question_usage",contextId,args)))})),modal.getRoot().on("change","#question_usage_version_dropdown",(function(e){args.questionid=e.target.value,modal.setBody(_fragment.default.loadFragment("qbank_usage","question_usage",contextId,args))}))}else modal.setBody(_fragment.default.loadFragment("qbank_usage","question_usage",contextId,args)),modal.show()};_exports.init=function(){let specificVersion=arguments.length>0&&void 0!==arguments[0]&&arguments[0];const target=document.querySelector("#categoryquestions");null!==target&&target.addEventListener("click",(e=>{e.target.dataset.target&&e.target.dataset.target.includes("questionusagepreview")&&usageEvent(e.target.dataset.questionid,e.target.dataset.contextid,specificVersion)}))}}));
+
+//# sourceMappingURL=usage.min.js.map

question/bank/usage/amd/build/usage.min.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"usage.min.js","sources":["../src/usage.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Usage column selector js.\n *\n * @module     qbank_usage/usage\n * @copyright  2021 Catalyst IT Australia Pty Ltd\n * @author     Safat Shahin <safatshahin@catalyst-au.net>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\nimport Fragment from 'core/fragment';\nimport ModalCancel from 'core/modal_cancel';\nimport Notification from 'core/notification';\nimport * as Str from 'core/str';\n\nlet modal = null;\n\n/**\n * Event listeners for the module.\n *\n * @method clickEvent\n * @param {int} questionId\n * @param {int} contextId\n * @param {boolean} specificVersion Is the view listing specific question versions?\n */\nconst usageEvent = async(questionId, contextId, specificVersion) => {\n    const args = {\n        questionid: questionId,\n        specificversion: specificVersion,\n    };\n    if (modal === null) {\n        try {\n            modal = await ModalCancel.create({\n                title: Str.get_string('usageheader', 'qbank_usage'),\n                body: Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args),\n                large: true,\n                show: true,\n            });\n        } catch (e) {\n            Notification.exception(e);\n            return;\n        }\n\n        modal.getRoot().on('click', 'a[href].page-link', function(e) {\n            e.preventDefault();\n            let attr = e.target.getAttribute(\"href\");\n            if (attr !== '#') {\n                args.querystring = attr;\n                modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));\n            }\n        });\n        // Version selection event.\n        modal.getRoot().on('change', '#question_usage_version_dropdown', function(e) {\n            args.questionid = e.target.value;\n            modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));\n        });\n    } else {\n        modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));\n        modal.show();\n    }\n\n};\n\n/**\n * Entrypoint of the js.\n *\n * @method init\n * @param {boolean} specificVersion Is the view listing specific question versions?\n */\nexport const init = (specificVersion = false) => {\n    const target = document.querySelector('#categoryquestions');\n    if (target !== null) {\n        target.addEventListener('click', (e) => {\n            if (e.target.dataset.target && e.target.dataset.target.includes('questionusagepreview')) {\n                // Call for the event listener to listed for clicks in any usage count row.\n                usageEvent(e.target.dataset.questionid, e.target.dataset.contextid, specificVersion);\n            }\n        });\n    }\n};\n"],"names":["modal","usageEvent","async","questionId","contextId","specificVersion","args","questionid","specificversion","ModalCancel","create","title","Str","get_string","body","Fragment","loadFragment","large","show","e","exception","getRoot","on","preventDefault","attr","target","getAttribute","querystring","setBody","value","document","querySelector","addEventListener","dataset","includes","contextid"],"mappings":";;;;;;;;g4BA6BIA,MAAQ,WAUNC,WAAaC,MAAMC,WAAYC,UAAWC,yBACtCC,KAAO,CACTC,WAAYJ,WACZK,gBAAiBH,oBAEP,OAAVL,MAAgB,KAEZA,YAAcS,sBAAYC,OAAO,CAC7BC,MAAOC,IAAIC,WAAW,cAAe,eACrCC,KAAMC,kBAASC,aAAa,cAAe,iBAAkBZ,UAAWE,MACxEW,OAAO,EACPC,MAAM,IAEZ,MAAOC,qCACQC,UAAUD,GAI3BnB,MAAMqB,UAAUC,GAAG,QAAS,qBAAqB,SAASH,GACtDA,EAAEI,qBACEC,KAAOL,EAAEM,OAAOC,aAAa,QACpB,MAATF,OACAlB,KAAKqB,YAAcH,KACnBxB,MAAM4B,QAAQb,kBAASC,aAAa,cAAe,iBAAkBZ,UAAWE,WAIxFN,MAAMqB,UAAUC,GAAG,SAAU,oCAAoC,SAASH,GACtEb,KAAKC,WAAaY,EAAEM,OAAOI,MAC3B7B,MAAM4B,QAAQb,kBAASC,aAAa,cAAe,iBAAkBZ,UAAWE,eAGpFN,MAAM4B,QAAQb,kBAASC,aAAa,cAAe,iBAAkBZ,UAAWE,OAChFN,MAAMkB,sBAWM,eAACb,8EACXoB,OAASK,SAASC,cAAc,sBACvB,OAAXN,QACAA,OAAOO,iBAAiB,SAAUb,IAC1BA,EAAEM,OAAOQ,QAAQR,QAAUN,EAAEM,OAAOQ,QAAQR,OAAOS,SAAS,yBAE5DjC,WAAWkB,EAAEM,OAAOQ,QAAQ1B,WAAYY,EAAEM,OAAOQ,QAAQE,UAAW9B"}

question/bank/usage/amd/src/usage.js

@@ -0,0 +1,94 @@
+// 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/>.
+
+/**
+ * Usage column selector js.
+ *
+ * @module     qbank_usage/usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+import Fragment from 'core/fragment';
+import ModalCancel from 'core/modal_cancel';
+import Notification from 'core/notification';
+import * as Str from 'core/str';
+
+let modal = null;
+
+/**
+ * Event listeners for the module.
+ *
+ * @method clickEvent
+ * @param {int} questionId
+ * @param {int} contextId
+ * @param {boolean} specificVersion Is the view listing specific question versions?
+ */
+const usageEvent = async(questionId, contextId, specificVersion) => {
+    const args = {
+        questionid: questionId,
+        specificversion: specificVersion,
+    };
+    if (modal === null) {
+        try {
+            modal = await ModalCancel.create({
+                title: Str.get_string('usageheader', 'qbank_usage'),
+                body: Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args),
+                large: true,
+                show: true,
+            });
+        } catch (e) {
+            Notification.exception(e);
+            return;
+        }
+
+        modal.getRoot().on('click', 'a[href].page-link', function(e) {
+            e.preventDefault();
+            let attr = e.target.getAttribute("href");
+            if (attr !== '#') {
+                args.querystring = attr;
+                modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));
+            }
+        });
+        // Version selection event.
+        modal.getRoot().on('change', '#question_usage_version_dropdown', function(e) {
+            args.questionid = e.target.value;
+            modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));
+        });
+    } else {
+        modal.setBody(Fragment.loadFragment('qbank_usage', 'question_usage', contextId, args));
+        modal.show();
+    }
+
+};
+
+/**
+ * Entrypoint of the js.
+ *
+ * @method init
+ * @param {boolean} specificVersion Is the view listing specific question versions?
+ */
+export const init = (specificVersion = false) => {
+    const target = document.querySelector('#categoryquestions');
+    if (target !== null) {
+        target.addEventListener('click', (e) => {
+            if (e.target.dataset.target && e.target.dataset.target.includes('questionusagepreview')) {
+                // Call for the event listener to listed for clicks in any usage count row.
+                usageEvent(e.target.dataset.questionid, e.target.dataset.contextid, specificVersion);
+            }
+        });
+    }
+};

question/bank/usage/classes/helper.php

@@ -0,0 +1,190 @@
+<?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/>.
+
+namespace qbank_usage;
+
+/**
+ * Helper class for usage.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class helper {
+
+    /**
+     * Get the usage count for a question.
+     *
+     * @param \question_definition $question
+     * @param bool $specificversion Count usages just for this version of the question?
+     * @return int
+     */
+    public static function get_question_entry_usage_count($question, bool $specificversion = false) {
+        global $DB;
+
+        $sql = 'SELECT COUNT(*) FROM (' . self::question_usage_sql($specificversion) . ') quizid';
+
+        $params = [$question->id, $question->questionbankentryid, 'mod_quiz', 'slot'];
+        if ($specificversion) {
+            $params[] = $question->id;
+        }
+
+        return $DB->count_records_sql($sql, $params);
+    }
+
+    /**
+     * Get the sql for usage data.
+     *
+     * @param bool $specificversion Count usages just for this version of the question?
+     * @return string
+     */
+    public static function question_usage_sql(bool $specificversion = false): string {
+        $sqlset = "(". self::get_question_attempt_usage_sql($specificversion) .")".
+            "UNION".
+            "(". self::get_question_bank_usage_sql($specificversion) .")";
+        return $sqlset;
+    }
+
+    /**
+     * Get question attempt count for the question.
+     *
+     * @param int $questionid
+     * @param int $quizid
+     * @return int
+     */
+    public static function get_question_attempts_count_in_quiz(int $questionid, $quizid = null): int {
+        global $DB;
+        if ($quizid) {
+            $sql = 'SELECT COUNT(qatt.id)
+                      FROM {quiz} qz
+                      JOIN {quiz_attempts} qa ON qa.quiz = qz.id
+                      JOIN {question_usages} qu ON qu.id = qa.uniqueid
+                      JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id
+                      JOIN {question} q ON q.id = qatt.questionid
+                     WHERE qatt.questionid = :questionid
+                       AND qa.preview = 0
+                       AND qz.id = :quizid';
+            $param = ['questionid' => $questionid, 'quizid' => $quizid];
+        } else {
+            $sql = 'SELECT COUNT(qatt.id)
+                      FROM {quiz_slots} qs
+                      JOIN {quiz_attempts} qa ON qa.quiz = qs.quizid
+                      JOIN {question_usages} qu ON qu.id = qa.uniqueid
+                      JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id
+                      JOIN {question} q ON q.id = qatt.questionid
+                     WHERE qatt.questionid = ?
+                       AND qa.preview = 0';
+            $param = ['questionid' => $questionid];
+        }
+        return $DB->count_records_sql($sql, $param);
+    }
+
+    /**
+     * Get the question bank usage sql.
+     *
+     * The resulting string which represents a sql query has then to be
+     * called accompanying a $params array which includes the necessary
+     * parameters in the correct order which are the question id, then
+     * the component and finally the question area.
+     *
+     * @param bool $specificversion Count usages just for this version of the question?
+     * @return string
+     */
+    public static function get_question_bank_usage_sql(bool $specificversion = false): string {
+        $sql = "SELECT qz.id as quizid,
+                       qz.name as modulename,
+                       qz.course as courseid
+                  FROM {quiz_slots} slot
+                  JOIN {quiz} qz ON qz.id = slot.quizid
+                  JOIN {question_references} qr ON qr.itemid = slot.id
+                  JOIN {question_bank_entries} qbe ON qbe.id = qr.questionbankentryid
+                  JOIN {question_versions} qv ON qv.questionbankentryid = qbe.id
+                 WHERE qv.questionbankentryid = ?
+                   AND qr.component = ?
+                   AND qr.questionarea = ?";
+
+        if ($specificversion) {
+            // Only get results where the reference matches the specific question ID that was requested,
+            // or the question ID that's requested is the latest version, and the reference is set to null (always latest version).
+            $sql .= " AND qv.questionid = ?
+                      AND (
+                          qv.version = qr.version
+                          OR (
+                              qr.version IS NULL
+                              AND qv.version = (
+                                  SELECT MAX(qv1.version)
+                                    FROM {question_versions} qv1
+                                   WHERE qv1.questionbankentryid = qbe.id
+                              )
+                          )
+                      )";
+        }
+        return $sql;
+    }
+
+    /**
+     * Get the question attempt usage sql.
+     *
+     * The resulting string which represents a sql query has then to be
+     * called accompanying a $params array which includes the necessary
+     * parameter, the question id.
+     *
+     * @param bool $specificversion Count usages just for this version of the question?
+     * @return string
+     */
+    public static function get_question_attempt_usage_sql(bool $specificversion = false): string {
+        $sql = "SELECT qz.id as quizid,
+                       qz.name as modulename,
+                       qz.course as courseid
+                  FROM {quiz} qz
+                  JOIN {quiz_attempts} qa ON qa.quiz = qz.id
+                  JOIN {question_usages} qu ON qu.id = qa.uniqueid
+                  JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id";
+        if ($specificversion) {
+            $sql .= "
+                  JOIN {question} q ON q.id = qatt.questionid
+                 WHERE qa.preview = 0
+                   AND q.id = ?";
+        } else {
+            $sql .= "
+                  JOIN {question_versions} qv ON qv.questionid = qatt.questionid
+                  JOIN {question_versions} qv2 ON qv.questionbankentryid = qv2.questionbankentryid
+                 WHERE qa.preview = 0
+                   AND qv2.questionid = ?";
+        }
+        return $sql;
+    }
+
+
+    /**
+     * Get the question last used sql.
+     *
+     * @return string
+     */
+    public static function get_question_last_used_sql(): string {
+        $sql = "SELECT MAX(qa.timemodified) as lastused
+                  FROM {quiz} qz
+                  JOIN {quiz_attempts} qa ON qa.quiz = qz.id
+                  JOIN {question_usages} qu ON qu.id = qa.uniqueid
+                  JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id
+                  JOIN {question} q ON q.id = qatt.questionid
+                 WHERE qa.preview = 0
+                   AND q.id = ?";
+        return $sql;
+    }
+
+}

question/bank/usage/classes/output/renderer.php

@@ -0,0 +1,49 @@
+<?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/>.
+
+namespace qbank_usage\output;
+
+/**
+ * Renderer for usage plugin.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class renderer extends \plugin_renderer_base {
+
+    /**
+     * Render the html fragment for usage modal.
+     *
+     * @param array $displaydata
+     * @return string
+     */
+    public function render_usage_fragment(array $displaydata): string {
+        return $this->render_from_template('qbank_usage/usage_modal', $displaydata);
+    }
+
+    /**
+     * Render the question usage column.
+     *
+     * @param array $displaydata last used date or never
+     * @return string
+     */
+    public function render_last_used_column(array $displaydata): string {
+        return $this->render_from_template('qbank_usage/last_used', $displaydata);
+    }
+
+}

question/bank/usage/classes/plugin_feature.php

@@ -0,0 +1,38 @@
+<?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/>.
+
+namespace qbank_usage;
+
+use core_question\local\bank\view;
+
+/**
+ * Class plugin_feature is the entrypoint for the columns.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class plugin_feature extends \core_question\local\bank\plugin_features_base {
+
+    public function get_question_columns(view $qbank): array {
+        return [
+            new question_usage_column($qbank),
+            new question_last_used_column($qbank)
+        ];
+    }
+
+}

question/bank/usage/classes/privacy/provider.php

@@ -0,0 +1,31 @@
+<?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/>.
+
+namespace qbank_usage\privacy;
+
+/**
+ * Privacy Subsystem for qbank_usage implementing null_provider.
+ *
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    public static function get_reason(): string {
+        return 'privacy:metadata';
+    }
+}

question/bank/usage/classes/question_last_used_column.php

@@ -0,0 +1,58 @@
+<?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/>.
+
+namespace qbank_usage;
+
+use core_question\local\bank\column_base;
+
+/**
+ * Question bank column for the question last used.
+ *
+ * @package    qbank_usage
+ * @copyright  2022 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class question_last_used_column extends column_base {
+
+    public function get_name(): string {
+        return 'questionlastused';
+    }
+
+    public function get_title(): string {
+        return get_string('questionlastused', 'qbank_usage');
+    }
+
+    public function help_icon(): ?\help_icon {
+        return new \help_icon('questionlastused', 'qbank_usage');
+    }
+
+    protected function display_content($question, $rowclasses): void {
+        global $DB, $PAGE;
+        $displaydata = [];
+        $questionusage = $DB->get_record_sql(helper::get_question_last_used_sql(), [$question->id]);
+        $displaydata['lastused'] = get_string('notused', 'qbank_usage');
+        if (!empty($questionusage->lastused)) {
+            $displaydata['lastused'] = userdate($questionusage->lastused);
+        }
+        echo $PAGE->get_renderer('qbank_usage')->render_last_used_column($displaydata);
+    }
+
+    public function get_extra_classes(): array {
+        return ['pr-3'];
+    }
+
+}

question/bank/usage/classes/question_usage_column.php

@@ -0,0 +1,76 @@
+<?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/>.
+
+namespace qbank_usage;
+
+use core_question\local\bank\column_base;
+
+/**
+ * A column type for the name of the question type.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class question_usage_column extends column_base {
+
+    /**
+     * Include Javascript module.
+     *
+     * @return void
+     */
+    public function init(): void {
+        parent::init();
+        global $PAGE;
+        $PAGE->requires->js_call_amd('qbank_usage/usage', 'init', [
+            $this->qbank->is_listing_specific_versions()
+        ]);
+    }
+
+    public function get_name(): string {
+        return 'questionusage';
+    }
+
+    public function get_title(): string {
+        return get_string('questionusage', 'qbank_usage');
+    }
+
+    public function help_icon(): ?\help_icon {
+        return new \help_icon('questionusage', 'qbank_usage');
+    }
+
+    protected function display_content($question, $rowclasses): void {
+        $usagecount = helper::get_question_entry_usage_count($question, $this->qbank->is_listing_specific_versions());
+        $attributes = [];
+        if (question_has_capability_on($question, 'view')) {
+            $target = 'questionusagepreview_' . $question->id;
+            $attributes = [
+                'href' => '#',
+                'data-target' => $target,
+                'data-questionid' => $question->id,
+                'data-courseid' => $this->qbank->course->id,
+                'data-contextid' => $question->contextid,
+            ];
+        }
+        echo \html_writer::tag('a', $usagecount, $attributes);
+    }
+
+    public function get_extra_classes(): array {
+        return ['pr-3'];
+    }
+
+}

question/bank/usage/classes/tables/question_usage_table.php

@@ -0,0 +1,136 @@
+<?php
+// This file is part of Moodle - https://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 <https://www.gnu.org/licenses/>.
+
+namespace qbank_usage\tables;
+
+global $CFG;
+require_once($CFG->libdir.'/tablelib.php');
+
+use context_course;
+use html_writer;
+use moodle_url;
+use qbank_usage\helper;
+use table_sql;
+
+/**
+ * Class question_usage_table.
+ * An extension of regular Moodle table.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class question_usage_table extends table_sql {
+
+    /**
+     * Search string.
+     *
+     * @var string $search
+     */
+    public $search = '';
+
+    /**
+     * Question id.
+     *
+     * @var \question_definition $question
+     */
+    public $question;
+
+    /**
+     * @var bool $specificversion Are we displaying the usage for a specific version, rather than all versions of the question?
+     */
+    protected $specificversion;
+
+    /**
+     * constructor.
+     * Sets the SQL for the table and the pagination.
+     *
+     * @param string $uniqueid
+     * @param \question_definition $question
+     */
+    public function __construct(string $uniqueid, \question_definition $question, bool $specificversion = false) {
+        global $PAGE;
+        parent::__construct($uniqueid);
+        $this->question = $question;
+        $columns = ['modulename', 'coursename', 'attempts'];
+        $headers = [
+            get_string('modulename', 'qbank_usage'),
+            get_string('coursename', 'qbank_usage'),
+            get_string('attempts', 'qbank_usage')
+        ];
+        $this->is_collapsible = false;
+        $this->no_sorting('modulename');
+        $this->no_sorting('coursename');
+        $this->no_sorting('attempts');
+        $this->define_columns($columns);
+        $this->define_headers($headers);
+        $this->define_baseurl($PAGE->url);
+        $this->specificversion = $specificversion;
+        $this->set_attribute('id', 'question_usage_table');
+    }
+
+    public function query_db($pagesize, $useinitialsbar = true) {
+        global $DB;
+        if (!$this->is_downloading()) {
+            $total = helper::get_question_entry_usage_count($this->question, $this->specificversion);
+            $this->pagesize($pagesize, $total);
+        }
+
+        $sql = helper::question_usage_sql($this->specificversion);
+        $params = [$this->question->id, $this->question->questionbankentryid, 'mod_quiz', 'slot'];
+        if ($this->specificversion) {
+            $params[] = $this->question->id;
+        }
+
+        if (!$this->is_downloading()) {
+            $this->rawdata = $DB->get_records_sql($sql, $params, $this->get_page_start(), $this->get_page_size());
+        } else {
+            $this->rawdata = $DB->get_records_sql($sql, $params);
+        }
+    }
+
+    public function col_modulename(\stdClass $values): string {
+        $cm = get_fast_modinfo($values->courseid)->instances['quiz'][$values->quizid];
+
+        return html_writer::link(new moodle_url('/mod/quiz/view.php', ['q' => $values->quizid]), $cm->get_formatted_name());
+    }
+
+    public function col_coursename(\stdClass $values): string {
+        $course = get_course($values->courseid);
+        $context = context_course::instance($course->id);
+
+        return html_writer::link(course_get_url($course), format_string($course->fullname, true, [
+            'context' => $context,
+        ]));
+    }
+
+    public function col_attempts(\stdClass $values): string {
+        return helper::get_question_attempts_count_in_quiz($this->question->id, $values->quizid);
+    }
+
+    /**
+     * Export this data so it can be used as the context for a mustache template/fragment.
+     *
+     * @return string
+     */
+    public function export_for_fragment(): string {
+        ob_start();
+        $this->out(10, true);
+        return ob_get_clean();
+    }
+
+}

question/bank/usage/lang/en/qbank_usage.php

@@ -0,0 +1,41 @@
+<?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/>.
+
+/**
+ * Strings for component qbank_usage, language 'en'
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+$string['pluginname'] = 'Question usage';
+$string['notused'] = 'Never';
+$string['privacy:metadata'] = 'The Question usage question bank plugin does not store any personal data.';
+$string['questionusage'] = 'Usage';
+$string['questionusage_help'] = 'The number of quizzes in which the question is used, with a link to open a window listing the quizzes and the number of attempts.';
+$string['questionlastused'] = 'Last used';
+$string['questionlastused_help'] = 'The date when the question was last attempted.';
+$string['usageheader'] = 'Question usage';
+
+// Table.
+$string['modulename'] = 'Activity name';
+$string['coursename'] = 'Course name';
+$string['versions'] = 'Version';
+$string['state'] = 'State';
+$string['attempts'] = 'Attempts';
+$string['questionusageversion'] = 'v{$a}';

question/bank/usage/lib.php

@@ -0,0 +1,69 @@
+<?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/>.
+
+/**
+ * Helper functions and callbacks.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Question usage fragment callback.
+ *
+ * @param array $args
+ * @return string rendered output
+ */
+function qbank_usage_output_fragment_question_usage(array $args): string {
+    global $USER, $PAGE, $CFG, $DB;
+    require_once($CFG->dirroot . '/question/engine/bank.php');
+    $displaydata = [];
+
+    $question = question_bank::load_question($args['questionid']);
+    $quba = question_engine::make_questions_usage_by_activity('core_question_preview', context_user::instance($USER->id));
+
+    $options = new \qbank_previewquestion\question_preview_options($question);
+    $quba->set_preferred_behaviour($options->behaviour);
+    $slot = $quba->add_question($question, $options->maxmark);
+    $quba->start_question($slot, $options->variant);
+    $transaction = $DB->start_delegated_transaction();
+    question_engine::save_questions_usage_by_activity($quba);
+    $transaction->allow_commit();
+    $displaydata['question'] = $quba->render_question($slot, $options, '1');
+
+    $specificversion = clean_param($args['specificversion'] ?? false, PARAM_BOOL);
+    $questionusagetable = new \qbank_usage\tables\question_usage_table('question_usage_table', $question, $specificversion);
+    $questionusagetable->baseurl = new moodle_url('');
+    if (isset($args['querystring'])) {
+        $querystring = preg_replace('/^\?/', '', $args['querystring']);
+        $params = [];
+        parse_str($querystring, $params);
+        if (isset($params['page'])) {
+            $questionusagetable->currpage = $params['page'];
+        }
+    }
+    $displaydata['tablesql'] = $questionusagetable->export_for_fragment();
+    $selector = \core_question\output\question_version_selection::make_for_question('question_usage_version_dropdown',
+        $args['questionid']);
+    $qbankrenderer = $PAGE->get_renderer('core_question', 'bank');
+    $displaydata['versionselection'] = $selector->export_for_template($qbankrenderer);
+
+    return $PAGE->get_renderer('qbank_usage')->render_usage_fragment($displaydata);
+}

question/bank/usage/styles.css

@@ -0,0 +1,4 @@
+.question-bank-table td.questionlastused span.date {
+    font-weight: 400;
+    font-size: .8em;
+}

question/bank/usage/templates/last_used.mustache

@@ -0,0 +1,32 @@
+{{!
+    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/>.
+}}
+{{!
+    @template qbank_usage/last_used
+
+    Example context (json):
+    {
+        "displaydata": [
+            {
+                "lastused": "Never"
+            }
+        ]
+    }
+}}
+
+<span class="date">
+    {{lastused}}
+</span>

question/bank/usage/templates/usage_modal.mustache

@@ -0,0 +1,38 @@
+{{!
+    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/>.
+}}
+{{!
+    @template qbank_usage/usage_modal
+
+    Example context (json):
+    {
+        "usagedata": [
+            {
+                "question": "question html"
+            }
+        ]
+    }
+}}
+{{#versionselection}}
+    {{> core_question/question_version_selection }}
+{{/versionselection}}
+<div class="question-usage-preview">
+    {{{question}}}
+</div>
+<div id="question-usage_table">
+    {{{tablesql}}}
+</div>
+

question/bank/usage/tests/behat/behat_qbank_usage.php

@@ -0,0 +1,59 @@
+<?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/>.
+
+// NOTE: no MOODLE_INTERNAL test here, this file may be required by behat before including /config.php.
+require_once(__DIR__ . '/../../../../../lib/behat/behat_base.php');
+require_once(__DIR__ . '/../../../../tests/behat/behat_question_base.php');
+
+use Behat\Mink\Exception\ExpectationException as ExpectationException,
+    Behat\Mink\Exception\ElementNotFoundException as ElementNotFoundException;
+
+/**
+ * Steps definitions to deal with the usage in question.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class behat_qbank_usage extends behat_question_base {
+
+    /**
+     * Looks for a table, then looks for a row that contains the given text.
+     * Once it finds the right row, it clicks a link in that row.
+     *
+     * @When I click :arg1 on the usage column
+     * @param string $linkname
+     */
+    public function i_click_on_the_usage_column($linkname) {
+        $exception = new ElementNotFoundException($this->getSession(),
+            'Cannot find any row on the page containing the text ' . $linkname);
+        $row = $this->find('css', sprintf('table tbody tr td.questionusage a:contains("%s")', $linkname), $exception);
+        $row->click();
+    }
+
+    /**
+     * Looks for the appropriate usage count in the column.
+     *
+     * @Then I should see :arg1 on the usage column
+     * @param string $linkdata
+     */
+    public function i_should_see_on_the_usage_column($linkdata) {
+        $exception = new ElementNotFoundException($this->getSession(),
+            'Cannot find any row with the usage count of ' . $linkdata . ' on the column named Usage');
+        $this->find('css', sprintf('table tbody tr td.questionusage a:contains("%s")', $linkdata), $exception);
+    }
+}

question/bank/usage/tests/behat/question_last_used_column.feature

@@ -0,0 +1,31 @@
+@qbank @qbank_usage @javascript
+Feature: Use the qbank plugin manager page for question last used
+  In order to check the plugin behaviour with enable and disable
+
+  Background:
+    Given the following "courses" exist:
+      | fullname | shortname | category |
+      | Course 1 | C1        | 0        |
+    And the following "activities" exist:
+      | activity   | name      | course | idnumber |
+      | quiz       | Test quiz | C1     | quiz1    |
+    And the following "question categories" exist:
+      | contextlevel | reference | name           |
+      | Course         | C1     | Test questions |
+    And the following "questions" exist:
+      | questioncategory | qtype     | name           | questiontext              |
+      | Test questions   | truefalse | First question | Answer the first question |
+
+  Scenario: Enable/disable question last usage column from the base view
+    Given I log in as "admin"
+    And I navigate to "Plugins > Question bank plugins > Manage question bank plugins" in site administration
+    And I should see "Question usage"
+    When I click on "Disable" "link" in the "Question usage" "table_row"
+    And I am on the "Test quiz" "quiz activity" page
+    And I navigate to "Question bank" in current page administration
+    Then I should not see "Last used"
+    And I navigate to "Plugins > Question bank plugins > Manage question bank plugins" in site administration
+    And I click on "Enable" "link" in the "Question usage" "table_row"
+    And I am on the "Test quiz" "quiz activity" page
+    And I navigate to "Question bank" in current page administration
+    And I should see "Last used"

question/bank/usage/tests/behat/question_usage_column.feature

@@ -0,0 +1,53 @@
+@qbank @qbank_usage
+Feature: Use the qbank plugin manager page for question usage
+  In order to check the plugin behaviour with enable and disable
+
+  Background:
+    Given the following "courses" exist:
+      | fullname | shortname | category |
+      | Course 1 | C1        | 0        |
+    And the following "activities" exist:
+      | activity   | name      | course | idnumber |
+      | quiz       | Test quiz | C1     | quiz1    |
+    And the following "question categories" exist:
+      | contextlevel | reference | name           |
+      | Course         | C1     | Test questions |
+    And the following "questions" exist:
+      | questioncategory | qtype     | name           | questiontext              |
+      | Test questions   | truefalse | First question | Answer the first question |
+
+  Scenario: Enable/disable question usage column from the base view
+    Given I log in as "admin"
+    And I navigate to "Plugins > Question bank plugins > Manage question bank plugins" in site administration
+    And I should see "Question usage"
+    When I click on "Disable" "link" in the "Question usage" "table_row"
+    And I am on the "Test quiz" "mod_quiz > question bank" page
+    Then I should not see "Usage"
+    And I navigate to "Plugins > Question bank plugins > Manage question bank plugins" in site administration
+    And I click on "Enable" "link" in the "Question usage" "table_row"
+    And I am on the "Test quiz" "mod_quiz > question bank" page
+    And I should see "Usage"
+
+  @javascript
+  Scenario: Question usage modal should work without any usage data
+    And I am on the "Test quiz" "mod_quiz > question bank" page logged in as "admin"
+    And I apply question bank filter "Category" with value "Test questions"
+    And I should see "Test questions"
+    And I should see "0" on the usage column
+    When I click "0" on the usage column
+    Then I should see "Version 1"
+    And I should see "v1 (latest)" in the "Question 1" "question"
+    And I click on "Close" "button" in the ".modal-dialog" "css_element"
+    And I should see "0" on the usage column
+
+  @javascript
+  Scenario: Question usage modal should work with usage data
+    Given quiz "Test quiz" contains the following questions:
+      | question       | page |
+      | First question | 1    |
+    And I am on the "Test quiz" "mod_quiz > question bank" page logged in as "admin"
+    And I apply question bank filter "Category" with value "Test questions"
+    And I should see "Test questions"
+    And I should see "1" on the usage column
+    When I click "1" on the usage column
+    Then "Test quiz" "table_row" should exist in the "question-usage_table" "region"

question/bank/usage/tests/helper_test.php

@@ -0,0 +1,260 @@
+<?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/>.
+
+namespace qbank_usage;
+
+defined('MOODLE_INTERNAL') || die();
+
+use mod_quiz\quiz_attempt;
+
+global $CFG;
+require_once($CFG->dirroot . '/mod/quiz/tests/quiz_question_helper_test_trait.php');
+
+/**
+ * Helper test.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @coversDefaultClass \qbank_usage\helper
+ */
+class helper_test extends \advanced_testcase {
+
+    use \quiz_question_helper_test_trait;
+
+    /**
+     * @var \stdClass $quiz
+     */
+    protected $quiz;
+
+    /**
+     * @var \stdClass $user
+     */
+    protected $user;
+
+    /**
+     * @var \core_question_generator $questiongenerator
+     */
+    protected $questiongenerator;
+
+    /**
+     * @var array $questions
+     */
+    protected $questions = [];
+
+    /**
+     * Test setup.
+     */
+    public function setup(): void {
+        $this->resetAfterTest();
+        $layout = '1,2,0';
+        // Make a user to do the quiz.
+        $this->user = $this->getDataGenerator()->create_user();
+        $course = $this->getDataGenerator()->create_course();
+        // Make a quiz.
+        $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');
+        $this->quiz = $quizgenerator->create_instance(['course' => $course->id,
+                'grade' => 100.0, 'sumgrades' => 2, 'layout' => $layout]);
+
+        $this->questiongenerator = $this->getDataGenerator()->get_plugin_generator('core_question');
+        $cat = $this->questiongenerator->create_question_category();
+
+        $page = 1;
+        foreach (explode(',', $layout) as $slot) {
+            if ($slot == 0) {
+                $page += 1;
+                continue;
+            }
+
+            $question = $this->questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
+            quiz_add_quiz_question($question->id, $this->quiz, $page);
+            $this->questions [] = $question;
+        }
+    }
+
+    /**
+     * Record a quiz attempt.
+     *
+     * @return void
+     */
+    protected function attempt_quiz(): void {
+        $quizobj = \mod_quiz\quiz_settings::create($this->quiz->id, $this->user->id);
+
+        $quba = \question_engine::make_questions_usage_by_activity('mod_quiz', $quizobj->get_context());
+        $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);
+        $timenow = time();
+        $attempt = quiz_create_attempt($quizobj, 1, false, $timenow, false, $this->user->id);
+        quiz_start_new_attempt($quizobj, $quba, $attempt, 1, $timenow);
+        quiz_attempt_save_started($quizobj, $quba, $attempt);
+        quiz_attempt::create($attempt->id);
+    }
+
+    /**
+     * Test question attempt count.
+     *
+     * @covers ::get_question_attempts_count_in_quiz
+     */
+    public function test_get_question_attempts_count_in_quiz(): void {
+        $this->attempt_quiz();
+        foreach ($this->questions as $question) {
+            $questionattemptcount = helper::get_question_attempts_count_in_quiz($question->id, $this->quiz->id);
+            // Test the attempt count matches the usage count, each question should have one count.
+            $this->assertEquals(1, $questionattemptcount);
+        }
+    }
+
+    /**
+     * Test test usage data.
+     *
+     * @covers ::get_question_entry_usage_count
+     */
+    public function test_get_question_entry_usage_count(): void {
+        foreach ($this->questions as $question) {
+            $count = helper::get_question_entry_usage_count(\question_bank::load_question($question->id));
+            // Test that the attempt data matches the usage data for the count.
+            $this->assertEquals(1, $count);
+        }
+    }
+
+    /**
+     * If a question has been included via a random question attempt, this should be counted as a usage.
+     *
+     * @covers ::get_question_entry_usage_count
+     * @return void
+     */
+    public function test_get_random_question_attempts_usage_count(): void {
+        $this->setAdminUser();
+        $cat = $this->questiongenerator->create_question_category();
+        $question = $this->questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
+        $this->add_random_questions($this->quiz->id, 1, $cat->id, 1);
+
+        $qdef = \question_bank::load_question($question->id);
+        $count = helper::get_question_entry_usage_count($qdef);
+        $this->assertEquals(0, $count);
+
+        $this->attempt_quiz();
+
+        $count = helper::get_question_entry_usage_count($qdef);
+        $this->assertEquals(1, $count);
+    }
+
+    /**
+     * When a question referenced directly is edited, the usage count of all versions remains the same.
+     *
+     * When checking usage of separate versions, the new version should show usages but the original version should not.
+     *
+     * @covers ::get_question_entry_usage_count
+     * @return void
+     */
+    public function test_edited_question_usage_counts(): void {
+        foreach ($this->questions as $question) {
+            $qdef = \question_bank::load_question($question->id);
+            $count1 = helper::get_question_entry_usage_count($qdef);
+            // Each question should have 1 usage.
+            $this->assertEquals(1, $count1);
+
+            $newversion = $this->questiongenerator->update_question($question);
+            $newqdef = \question_bank::load_question($newversion->id);
+
+            // Either version should return the same count if not checking a specific version.
+            $count2 = helper::get_question_entry_usage_count($qdef);
+            $this->assertEquals(1, $count2);
+            $count3 = helper::get_question_entry_usage_count($newqdef);
+            $this->assertEquals(1, $count3);
+            // Checking the specific version count should return the counts for each version.
+            // The original version is no longer included in the quiz, so has 0 usages.
+            $count4 = helper::get_question_entry_usage_count($qdef, true);
+            $this->assertEquals(0, $count4);
+            // The new version is now included in the quiz, so has 1 usage.
+            $count5 = helper::get_question_entry_usage_count($newqdef, true);
+            $this->assertEquals(1, $count5);
+        }
+    }
+
+    /**
+     * When a question referenced directly with attempts is edited, the usage count of all versions remains the same.
+     *
+     * When checking usage of separate versions, both versions should show usage.
+     *
+     * @covers ::get_question_entry_usage_count
+     * @return void
+     */
+    public function test_edited_attempted_question_usage_counts(): void {
+        $this->attempt_quiz();
+
+        foreach ($this->questions as $question) {
+            $qdef = \question_bank::load_question($question->id);
+            $count1 = helper::get_question_entry_usage_count($qdef);
+            // Each question should have 1 usage.
+            $this->assertEquals(1, $count1);
+
+            $newversion = $this->questiongenerator->update_question($question);
+            $newqdef = \question_bank::load_question($newversion->id);
+
+            // Either version should return the same count if not checking a specific version.
+            $count2 = helper::get_question_entry_usage_count($qdef);
+            $this->assertEquals(1, $count2);
+            $count3 = helper::get_question_entry_usage_count($newqdef);
+            $this->assertEquals(1, $count3);
+            // Checking the specific version count should return the counts for each version.
+            // The original version is no longer included in the quiz. However, the is still an attempt using this question version,
+            // so it has 1 usage.
+            $count4 = helper::get_question_entry_usage_count($qdef, true);
+            $this->assertEquals(1, $count4);
+            // The new version is now included in the quiz, so has 1 usage.
+            $count5 = helper::get_question_entry_usage_count($newqdef, true);
+            $this->assertEquals(1, $count5);
+        }
+    }
+
+    /**
+     * When a random question with attempts is edited, it should still have the same usage count.
+     *
+     * When checking usage of separate versions, the original version should still show usage but the new version should not.
+     *
+     * @covers ::get_question_entry_usage_count
+     * @return void
+     */
+    public function test_edited_attempted_random_question_usage_count(): void {
+        $this->setAdminUser();
+        $cat = $this->questiongenerator->create_question_category();
+        $question = $this->questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
+        $this->add_random_questions($this->quiz->id, 1, $cat->id, 1);
+
+        $this->attempt_quiz();
+
+        $qdef = \question_bank::load_question($question->id);
+        $count1 = helper::get_question_entry_usage_count($qdef);
+        $this->assertEquals(1, $count1);
+
+        $newversion = $this->questiongenerator->update_question($question);
+        $newqdef = \question_bank::load_question($newversion->id);
+
+        // Either version should return the same count if not checking a specific version.
+        $count2 = helper::get_question_entry_usage_count($qdef);
+        $this->assertEquals(1, $count2);
+        $count3 = helper::get_question_entry_usage_count($newqdef);
+        $this->assertEquals(1, $count3);
+        // Checking the specific version count should return the counts for each version.
+        // There is still an attempt of the original version has part of the random question attempt, so it has 1 usage.
+        $count4 = helper::get_question_entry_usage_count($qdef, true);
+        $this->assertEquals(1, $count4);
+        // There is no attempt of the new version, so it has 0 usages.
+        $count5 = helper::get_question_entry_usage_count($newqdef, true);
+        $this->assertEquals(0, $count5);
+    }
+}

question/bank/usage/tests/question_usage_test.php

@@ -0,0 +1,86 @@
+<?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/>.
+
+namespace qbank_usage;
+
+use mod_quiz\quiz_attempt;
+
+/**
+ * Tests for the data of question usage from differnet areas like helper or usage table.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @coversDefaultClass \qbank_usage\tables\question_usage_table
+ * @covers \qbank_usage_output_fragment_question_usage
+ */
+class question_usage_test extends \advanced_testcase {
+
+    /**
+     * Test question usage data.
+     */
+    public function test_question_usage(): void {
+        global $PAGE;
+        $this->resetAfterTest(true);
+        $layout = '1,2,0';
+        // Make a user to do the quiz.
+        $user = $this->getDataGenerator()->create_user();
+        $course = $this->getDataGenerator()->create_course();
+        // Make a quiz.
+        $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');
+        $quiz = $quizgenerator->create_instance(['course' => $course->id,
+            'grade' => 100.0, 'sumgrades' => 2, 'layout' => $layout]);
+
+        $quizobj = \mod_quiz\quiz_settings::create($quiz->id, $user->id);
+
+        $quba = \question_engine::make_questions_usage_by_activity('mod_quiz', $quizobj->get_context());
+        $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);
+
+        $questiongenerator = $this->getDataGenerator()->get_plugin_generator('core_question');
+        $cat = $questiongenerator->create_question_category();
+
+        $questions = [];
+        $page = 1;
+        foreach (explode(',', $layout) as $slot) {
+            if ($slot == 0) {
+                $page += 1;
+                continue;
+            }
+
+            $question = $questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
+            quiz_add_quiz_question($question->id, $quiz, $page);
+            $questions[] = $question;
+        }
+
+        $timenow = time();
+        $attempt = quiz_create_attempt($quizobj, 1, false, $timenow, false, $user->id);
+        quiz_start_new_attempt($quizobj, $quba, $attempt, 1, $timenow);
+        quiz_attempt_save_started($quizobj, $quba, $attempt);
+        $attemptdata = quiz_attempt::create($attempt->id);
+
+        $this->setAdminUser();
+        $PAGE->set_url(new \moodle_url('/'));
+        foreach ($questions as $question) {
+            $questionusagetable = qbank_usage_output_fragment_question_usage(['questionid' => $question->id]);
+            // Test usage table contains the quiz data which was attempted.
+            $this->assertStringContainsString($quiz->name, $questionusagetable);
+
+            // Test usage table contains the course data where the quiz was attempted.
+            $this->assertStringContainsString($course->fullname, $questionusagetable);
+        }
+    }
+}

question/bank/usage/version.php

@@ -0,0 +1,31 @@
+<?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/>.
+
+/**
+ * Version information for qbank_usage.
+ *
+ * @package    qbank_usage
+ * @copyright  2021 Catalyst IT Australia Pty Ltd
+ * @author     Safat Shahin <safatshahin@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$plugin->component = 'qbank_usage';
+$plugin->version   = 2024042200;
+$plugin->requires  = 2024041600;
+$plugin->maturity  = MATURITY_STABLE;