Plugin: Exercise monitoring and mouse focus tracking - refs BT#20900 BT#20901 (#4900)

* Plugin: ExerciseFocused: Add plugin - refs BT#20900 * Plugin: ExerciseFocused: Refactoring variable and setting names - refs BT#20900 * Plugin: ExerciseMonitoring: Add plugin - refs BT#20901 * Plugin: ExerciseMonitoring: Terms popup is not callable - refs BT#20901 * Plugin: ExerciseMonitoring: Remove countdown to snap - refs BT#20901 * Plugin: ExerciseMonitoring: Snap when pressing spacer - refs BT#20901 * Plugin: ExerciseMonitoring: Redirect when ending initial photos - refs BT#20901 * Plugin: ExerciseMonitoring: Differ between exercise one per page or all question per page - refs BT#20901 * Plugin: ExerciseMonitoring: Set snapshot dimension to 640x480 - refs BT#20901 * Plugin: ExerciseFocused: Show warning to alert user before leaving exercise - refs BT#20900 * Plugin: ExerciseMonitoring: Don't show modal when there isn't Start button - refs BT#20901 * Plugin: ExerciseFocused: Block click event - refs BT#20900 * Plugin: ExerciseMonitoring: Fix video responsive - refs BT#20901 * Plugin: ExerciseMonitoring: Add instructions to take snapshots - refs BT#20901 * Plugin: ExerciseFocused: Refactor query for results - refs BT#20901 * Plugin: ExerciseFocused: Add setting to generate random sampling - refs BT#21074 * Plugin: ExerciseFocused: Display motive in report with contextual style - refs BT#21074 * Plugin: ExerciseMonitoring: Show snapshot logs in ExerciseFocused plugin report - refs BT#21074 * Minor: Format code - refs BT#21074 * Plugin: ExerciseFocused: Language variable - refs BT#20900 * Plugin: ExerciseMonitoring: Fix extrafield name - refs BT#20900 * Plugin: ExerciseFocused: Allow to enable time limit by setting - refs BT#20901 * Plugin: ExerciseFocused: Add spanish language - refs BT#20901 * Plugin: ExerciseMonitoring: Add spanish language - refs BT#20900 * Plugin: ExerciseMonitoring: Add placeholders to camera - refs BT#20901 * Plugin: ExerciseMonitoring: Refactor to show link in plugin Exercise Focused - refs BT#20901 * Plugin: ExerciseMonitoring: Fix lang var - refs BT#20901 * Plugin: ExerciseMonitoring: Fix irregular grid - refs BT#20901 * Plugin: ExerciseFocused: Allow save level in log - refs BT#20900 * Plugin: ExerciseFocused: Allow export for exercise with one question per page - refs BT#21074 * Plugin: ExerciseFocused: ExerciseMonitoring: Fix lang variables - refs BT#20900 BT#20901 * Plugin: ExerciseFocused: Fix report when there is no exercise attempts in course - refs BT#21074 * Plugin: ExerciseFocused: Include snapshots column from ExerciseMonitoring plugin in report - refs BT#21074 * Minor: Format code - refs BT#21074 * Plugin: ExerciseFocused: Simplify conditions with exercise type - refs BT#20900 * Plugin: ExerciseFocused: ExerciseMonitoring: Use new term to level + improve warning message - refs BT#21074 * Plugin: ExerciseMonitoring: set genera column to level in report - refs BT#21074 * Plugin: ExerciseMonitoring: ExerciseFocused: Change language vars - refs BT#21074 * Plugin: ExerciseMonitoring: ExerciseFocused: unify header in modals - BT#21074 * Plugin: ExerciseMonitoring: ExerciseFocused: use Student term instead of Learner - BT#21074 * Plugin: ExerciseFocused: Display level reached in detail - BT#21074 * Plugin: ExerciseMonitoring: Move code to function - BT#21074 * Plugin: ExerciseFocused: Change language variable - refs BT#21074 * Plugin: ExerciseFocused: Change language variables - refs BT#21074 * Plugin: ExerciseFocused: Add columns about session/course in admin report - refs BT#21074 * Plugin: ExerciseFocused: Fix language vars in report - refs BT#21074 * Plugin: ExerciseFocused: Add IP report exported + fix lang var - refs BT#21074 * Plugin: ExerciseMonitoring: Add option to set instructions with age distinction - refs BT#21179 * Plugin: ExerciseMonitoring: Move code to function - refs BT#20901 * Plugin: ExerciseMonitoring: Fix ID and user snapshots without track_e_exercise.id - refs BT#20901 * Plugin: ExerciseFocused: Separate the column full name in two columns + separate username row in report - refs BT#21074 * Plugin: ExerciseFocused: Search form has optional fields - refs BT#21074 * Plugin: ExerciseMonitoring: Show the birthdate and legal age in report - refs BT#21074 * Minor: Add missing webcam.png icon with size small - refs BT#21074 * Plugin: ExerciseFocused: Fix detail for admin report - refs BT#21074 * Plugin: ExerciseMonitoring: Add setting and cron job to delete snapshots taken - refs BT#21074 * Minor: Plugin: ExerciseFocused: Delay backdrop - refs BT#21074 * Minor: Plugin: ExerciseFocused: change message for window/tab title - refs BT#21074 * Plugin: ExerciseFocused: Keep message visibility after refocusing - refs BT#20901 * Plugin: ExerciseFocused: Fix filter by session extra fields - refs BT#21074 * Plugin: ExerciseFocused: Fix report by session extra fields - refs BT#21074 * Plugin: ExerciseMonitoring: Make the live camera floating - refs BT#20901 * Plugin: ExerciseFocused: Make the alert message floating - refs BT#20901 * Plugin: ExerciseFocused: Change lang var for motive - refs BT#21074 * Plugin: ExerciseFocused: Increase delay time to hide messages - refs BT#20900 * Plugin: ExerciseMonitoring: Improve image placeholders for id card and student - refs BT#20901 * Plugin: ExerciseMonitoring: Improve image placeholders for id card - refs BT#20901 * Minor: Plugin: ExerciseFocused: Fix lang var - refs BT#20901 * Plugin: ExerciseFocused: Fix random results - refs BT#21074 * Plugin: ExerciseFocused: Fix session filter - refs BT#21074 * Plugin: ExerciseFocused: Allow multiple match in firstname and lastname filters - refs BT#21074 * Plugin: ExerciseFocused: Round number of random results - refs BT#21074 * Plugin: ExerciseFocused: Add button to reset search - refs BT#21074 * Minor: Format code
11 months ago · 775a5452f1
parent 3e2582f64f
commit 775a5452f1
46 changed files with 3473 additions and 0 deletions
--- a/main/exercise/exercise_report.php
+++ b/main/exercise/exercise_report.php
@ -500,6 +500,8 @@ if ($is_allowedToEdit && $origin !== 'learnpath') {
            'comparative_group_report.php?'.api_get_cidreq().'&id='.$exercise_id,
            ['class' => 'btn btn-default']
        );
+
+        $actions .= ExerciseFocusedPlugin::create()->getLinkReporting($exercise_id);
    }
 } else {
    $actions .= '<a href="exercise.php">'.
--- a/main/img/icons/22/webcam_na.png
+++ b/main/img/icons/22/webcam_na.png
--- a/plugin/exercisefocused/admin.php
+++ b/plugin/exercisefocused/admin.php
@ -0,0 +1,32 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseFocused\Controller\AdminController;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+$cidReset = true;
+
+require_once __DIR__.'/../../main/inc/global.inc.php';
+
+api_protect_admin_script();
+
+$em = Database::getManager();
+$logRepository = $em->getRepository(Log::class);
+
+$reportingController = new AdminController(
+    ExerciseFocusedPlugin::create(),
+    HttpRequest::createFromGlobals(),
+    $em,
+    $logRepository
+);
+
+try {
+    $response = $reportingController();
+} catch (Exception $e) {
+    $response = HttpResponse::create('', HttpResponse::HTTP_FORBIDDEN);
+}
+
+$response->send();
--- a/plugin/exercisefocused/index.php
+++ b/plugin/exercisefocused/index.php
@ -0,0 +1,48 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+
+$plugin = ExerciseFocusedPlugin::create();
+
+$exerciseId = (int) ($_GET['exerciseId'] ?? 0);
+
+$renderRegion = $plugin->isEnableForExercise($exerciseId);
+
+if ($renderRegion) {
+    $_template['show_region'] = true;
+
+    $em = Database::getManager();
+
+    $existingExeId = (int) ChamiloSession::read('exe_id');
+    $trackingExercise = null;
+
+    if ($existingExeId) {
+        $trackingExercise = $em->find(TrackEExercises::class, $existingExeId);
+    }
+
+    $_template['sec_token'] = Security::get_token('exercisefocused');
+
+    if ('true' === $plugin->get(ExerciseFocusedPlugin::SETTING_ENABLE_OUTFOCUSED_LIMIT)) {
+        $logRepository = $em->getRepository(Log::class);
+
+        if ($trackingExercise) {
+            $countOutfocused = $logRepository->countByActionInExe($trackingExercise, Log::TYPE_OUTFOCUSED);
+        } else {
+            $countOutfocused = 0;
+        }
+
+        $_template['count_outfocused'] = $countOutfocused;
+        $_template['remaining_outfocused'] = (int) $plugin->get(ExerciseFocusedPlugin::SETTING_OUTFOCUSED_LIMIT) - $countOutfocused;
+    }
+
+    if ($trackingExercise) {
+        $exercise = new Exercise($trackingExercise->getCId());
+
+        if ($exercise->read($trackingExercise->getExeExoId())) {
+            $_template['exercise_type'] = (int) $exercise->selectType();
+        }
+    }
+}
--- a/plugin/exercisefocused/install.php
+++ b/plugin/exercisefocused/install.php
@ -0,0 +1,5 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+ExerciseFocusedPlugin::create()->install();
--- a/plugin/exercisefocused/lang/english.php
+++ b/plugin/exercisefocused/lang/english.php
@ -0,0 +1,39 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = "Exercise Focused";
+$strings['plugin_comment'] = "Show a message to return to the exercise when the user exits the Chamilo window/tab.";
+
+$strings['tool_enable'] = "Enable tool";
+$strings['enable_time_limit'] = 'Enable time limit';
+$strings['time_limit'] = "Limit time";
+$strings['time_limit_help'] = "Limit time (in seconds) to return to the exercise. After this time the exercise will be closed.";
+$strings['enable_outfocused_limit'] = "Enable maximum of outfocused";
+$strings['outfocused_limit'] = "Maximum number of outfocused allowed";
+$strings['outfocused_limit_help'] = "Number of outfocused allowed. After this limit the exercise will be closed.";
+$strings['session_field_filters'] = "Session field as filter";
+$strings['session_field_filters_help'] = "Extra field names separeted by a comma.";
+$strings['percentage_sampling'] = "Percentage of sampling attempts";
+$strings['percentage_sampling_help'] = "A percentage of attempts will be selected for random review";
+
+$strings['ReportByAttempts'] = "Exercise focused: Report by attempts";
+$strings['YouHaveLeftTheExercise'] = "Careful! We detect that you have left the exam window.<br><br>You must return and complete it.";
+$strings['YouHaveXTimeToReturn'] = "You have <span class=\"h3 text-danger\" id=\"time-limit-target\">%s</span> seconds to return";
+$strings['YouAreAllowedXOutfocused'] = "You are allowed <span class=\"h3 text-danger\" id=\"outfocused-limit-target\">%d</span> outfocused";
+$strings['OutfocusedLimitExceeded'] = "You have exceeded the allowed limit of outfocused";
+$strings['SelectExercise'] = "Select exercise";
+$strings['UnselectExercise'] = "Unselect exercise";
+$strings['Returns'] = "Returns";
+$strings['MaxOutfocusedReached'] = "Max outfocused reached";
+$strings['TimeLimitReached'] = "Time limit reached";
+$strings['Outfocused'] = "Outfocused";
+$strings['Return'] = "Return";
+$strings['Motive'] = "Motive";
+$strings['AlertBeforeLeaving'] = "Please stay within the exam";
+$strings['RandomSampling'] = "Random sampling";
+$strings['WindowTitleOutfocused'] = '🚨 Stay within the exam!';
+$strings['LevelReached'] = 'Level reached';
+$strings['ExerciseStartDateAndTime'] = "Exercise start date and time";
+$strings['ExerciseEndDateAndTime'] = "Exercise end date and time";
+$strings['MotiveExerciseFinished'] = "Successfully completed the exam";
--- a/plugin/exercisefocused/lang/spanish.php
+++ b/plugin/exercisefocused/lang/spanish.php
@ -0,0 +1,39 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = "Enfoque en el Ejercicio";
+$strings['plugin_comment'] = "Mostrar un mensaje para regresar al ejercicio cuando el usuario sale de la ventana/pestaña de Chamilo.";
+
+$strings['tool_enable'] = "Habilitar herramienta";
+$strings['enable_time_limit'] = 'Habilitar límite de tiempo';
+$strings['time_limit'] = "Límite de tiempo";
+$strings['time_limit_help'] = "Límite el tiempo (en segundos) para regresar al ejercicio. Pasado este tiempo, el ejercicio se cerrará.";
+$strings['enable_outfocused_limit'] = "Habilitar el máximo de desenfoque";
+$strings['outfocused_limit'] = "Número máximo de desenfoques permitidos";
+$strings['outfocused_limit_help'] = "Número de desenfoques permitidos. Después de este límite, el ejercicio se cerrará.";
+$strings['session_field_filters'] = "Campo de sesión como filtro";
+$strings['session_field_filters_help'] = "Nombres de campos adicionales separados por comas.";
+$strings['percentage_sampling'] = "Porcentaje de intentos de muestreo";
+$strings['percentage_sampling_help'] = "Se seleccionará un porcentaje de intentos para una revisión aleatoria";
+
+$strings['ReportByAttempts'] = "Enfoque en el Ejercicio: Informe por intentos";
+$strings['YouHaveLeftTheExercise'] = "¡Cuidado! Detectamos que has abandonado la ventana del examen.<br><br>Debes retornar y culminarlo.";
+$strings['YouHaveXTimeToReturn'] = "Tienes <span class=\"h3 text-danger\" id=\"time-limit-target\">%s</span> segundos para regresar";
+$strings['YouAreAllowedXOutfocused'] = "Se te permite <span class=\"h3 text-danger\" id=\"outfocused-limit-target\">%d</span> desenfoques";
+$strings['OutfocusedLimitExceeded'] = "Has excedido el límite permitido de desenfoques";
+$strings['SelectExercise'] = "Seleccionar ejercicio";
+$strings['UnselectExercise'] = "Deseleccionar ejercicio";
+$strings['Returns'] = "Regresos";
+$strings['MaxOutfocusedReached'] = "Se ha alcanzado el máximo de desenfoques";
+$strings['TimeLimitReached'] = "Se ha alcanzado el límite de tiempo";
+$strings['Outfocused'] = "Desenfoques";
+$strings['Return'] = "Regresos";
+$strings['Motive'] = "Motivo";
+$strings['AlertBeforeLeaving'] = "Por favor, mantente dentro del examen.";
+$strings['RandomSampling'] = "Muestreo Aleatorio";
+$strings['WindowTitleOutfocused'] = '🚨 Retorna y culmina tu examen';
+$strings['LevelReached'] = 'Nivel alcanzado';
+$strings['ExerciseStartDateAndTime'] = "Fecha y hora de inicio del ejercicio";
+$strings['ExerciseEndDateAndTime'] = "Fecha y hora de finalización del ejercicio";
+$strings['MotiveExerciseFinished'] = "Culminó exitosamente el examen";
--- a/plugin/exercisefocused/pages/detail.php
+++ b/plugin/exercisefocused/pages/detail.php
@ -0,0 +1,32 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseFocused\Controller\DetailController;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+if (!api_is_allowed_to_edit()) {
+    api_not_allowed(true);
+}
+
+$em = Database::getManager();
+$logRepository = $em->getRepository(Log::class);
+
+$detailController = new DetailController(
+    ExerciseFocusedPlugin::create(),
+    HttpRequest::createFromGlobals(),
+    $em,
+    $logRepository
+);
+
+try {
+    $response = $detailController();
+} catch (Exception $e) {
+    $response = HttpResponse::create('', HttpResponse::HTTP_FORBIDDEN);
+}
+
+$response->send();
--- a/plugin/exercisefocused/pages/export.php
+++ b/plugin/exercisefocused/pages/export.php
@ -0,0 +1,298 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\TrackEAttempt;
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log as FocusedLog;
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log as MonitoringLog;
+use Chamilo\UserBundle\Entity\User;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Query\Expr\Join;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_course_script(true);
+
+if (!api_is_allowed_to_edit()) {
+    api_not_allowed(true);
+}
+
+$plugin = ExerciseFocusedPlugin::create();
+$monitoringPlugin = ExerciseMonitoringPlugin::create();
+$monitoringPluginIsEnabled = $monitoringPlugin->isEnabled(true);
+$request = HttpRequest::createFromGlobals();
+$em = Database::getManager();
+$focusedLogRepository = $em->getRepository(FocusedLog::class);
+$attempsRepository = $em->getRepository(TrackEAttempt::class);
+
+if (!$plugin->isEnabled(true)) {
+    api_not_allowed(true);
+}
+
+$params = $request->query->all();
+
+$results = findResults($params, $em, $plugin);
+
+$data = [];
+
+/** @var array<string, mixed> $result */
+foreach ($results as $result) {
+    /** @var TrackEExercises $trackExe */
+    $trackExe = $result['exe'];
+    $user = api_get_user_entity($trackExe->getExeUserId());
+
+    $outfocusedLimitCount = $focusedLogRepository->countByActionInExe($trackExe, FocusedLog::TYPE_OUTFOCUSED_LIMIT);
+    $timeLimitCount = $focusedLogRepository->countByActionInExe($trackExe, FocusedLog::TYPE_TIME_LIMIT);
+
+    $exercise = new Exercise($trackExe->getCId());
+    $exercise->read($trackExe->getExeExoId());
+
+    $quizType = (int) $exercise->selectType();
+
+    $data[] = [
+        get_lang('LoginName'),
+        $user->getUsername(),
+    ];
+    $data[] = [
+        get_lang('Student'),
+        $user->getFirstname(),
+        $user->getLastname(),
+    ];
+
+    if ($monitoringPluginIsEnabled
+        && 'true' === $monitoringPlugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE)
+    ) {
+        $fieldVariable = $monitoringPlugin->get(ExerciseMonitoringPlugin::SETTING_EXTRAFIELD_BIRTHDATE);
+        $birthdateValue = UserManager::get_extra_user_data_by_field($user->getId(), $fieldVariable);
+
+        $data[] = [
+            $monitoringPlugin->get_lang('Birthdate'),
+            $birthdateValue ? $birthdateValue[$fieldVariable] : '----',
+            $monitoringPlugin->isAdult($user->getId())
+                ? $monitoringPlugin->get_lang('AdultStudent')
+                : $monitoringPlugin->get_lang('MinorStudent'),
+        ];
+    }
+
+    if ($trackExe->getSessionId()) {
+        $data[] = [
+            get_lang('SessionName'),
+            api_get_session_entity($trackExe->getSessionId())->getName(),
+        ];
+    }
+
+    $data[] = [
+        get_lang('CourseTitle'),
+        api_get_course_entity($trackExe->getCId())->getTitle(),
+    ];
+    $data[] = [
+        get_lang('ExerciseName'),
+        $exercise->getUnformattedTitle(),
+    ];
+    $data[] = [
+        $plugin->get_lang('ExerciseStartDateAndTime'),
+        api_get_local_time($result['exe']->getStartDate(), null, null, true, true, true),
+    ];
+    $data[] = [
+        $plugin->get_lang('ExerciseEndDateAndTime'),
+        api_get_local_time($result['exe']->getExeDate(), null, null, true, true, true),
+    ];
+    $data[] = [
+        get_lang('IP'),
+        $result['exe']->getUserIp(),
+    ];
+    $data[] = [
+        $plugin->get_lang('Motive'),
+        $plugin->calculateMotive($outfocusedLimitCount, $timeLimitCount),
+    ];
+    $data[] = [];
+
+    $data[] = [
+        $plugin->get_lang('LevelReached'),
+        get_lang('DateExo'),
+        get_lang('Score'),
+        $plugin->get_lang('Outfocused'),
+        $plugin->get_lang('Returns'),
+        $monitoringPluginIsEnabled ? $monitoringPlugin->get_lang('Snapshots') : '',
+    ];
+
+    if (ONE_PER_PAGE === $quizType) {
+        $questionList = explode(',', $trackExe->getDataTracking());
+
+        foreach ($questionList as $idx => $questionId) {
+            $attempt = $attempsRepository->findOneBy(
+                ['exeId' => $trackExe->getExeId(), 'questionId' => $questionId],
+                ['tms' => 'DESC']
+            );
+
+            if (!$attempt) {
+                continue;
+            }
+
+            $result = $exercise->manage_answer(
+                $trackExe->getExeId(),
+                $questionId,
+                null,
+                'exercise_result',
+                false,
+                false,
+                true,
+                false,
+                $exercise->selectPropagateNeg()
+            );
+
+            $row = [
+                get_lang('QuestionNumber').' '.($idx + 1),
+                api_get_local_time($attempt->getTms()),
+                $result['score'].' / '.$result['weight'],
+                $focusedLogRepository->countByActionAndLevel($trackExe, FocusedLog::TYPE_OUTFOCUSED, $questionId),
+                $focusedLogRepository->countByActionAndLevel($trackExe, FocusedLog::TYPE_RETURN, $questionId),
+                getSnapshotListForLevel($questionId, $trackExe),
+            ];
+
+            $data[] = $row;
+        }
+    } elseif (ALL_ON_ONE_PAGE === $quizType) {
+    }
+
+    $data[] = [];
+    $data[] = [];
+    $data[] = [];
+}
+
+Export::arrayToXls($data);
+
+function getSessionIdFromFormValues(array $formValues, array $fieldVariableList): array
+{
+    $fieldItemIdList = [];
+    $objFieldValue = new ExtraFieldValue('session');
+
+    foreach ($fieldVariableList as $fieldVariable) {
+        if (!isset($formValues["extra_$fieldVariable"])) {
+            continue;
+        }
+
+        $itemValues = $objFieldValue->get_item_id_from_field_variable_and_field_value(
+            $fieldVariable,
+            $formValues["extra_$fieldVariable"],
+            false,
+            false,
+            true
+        );
+
+        foreach ($itemValues as $itemValue) {
+            $fieldItemIdList[] = (int) $itemValue['item_id'];
+        }
+    }
+
+    return array_unique($fieldItemIdList);
+}
+
+function findResults(array $formValues, EntityManagerInterface $em, ExerciseFocusedPlugin $plugin)
+{
+    $cId = api_get_course_int_id();
+    $sId = api_get_session_id();
+
+    $qb = $em->createQueryBuilder();
+    $qb
+        ->select('te AS exe, q.title, te.startDate , u.firstname, u.lastname, u.username')
+        ->from(TrackEExercises::class, 'te')
+        ->innerJoin(CQuiz::class, 'q', Join::WITH, 'te.exeExoId = q.iid')
+        ->innerJoin(User::class, 'u', Join::WITH, 'te.exeUserId = u.id');
+
+    $params = [];
+
+    if ($cId) {
+        $qb->andWhere($qb->expr()->eq('te.cId', ':cId'));
+
+        $params['cId'] = $cId;
+
+        $sessionItemIdList = $sId ? [$sId] : [];
+    } else {
+        $sessionItemIdList = getSessionIdFromFormValues(
+            $formValues,
+            $plugin->getSessionFieldList()
+        );
+    }
+
+    if ($sessionItemIdList) {
+        $qb->andWhere($qb->expr()->in('te.sessionId', ':sessionItemIdList'));
+
+        $params['sessionItemIdList'] = $sessionItemIdList;
+    }
+
+    if (!empty($formValues['username'])) {
+        $qb->andWhere($qb->expr()->eq('u.username', ':username'));
+
+        $params['username'] = $formValues['username'];
+    }
+
+    if (!empty($formValues['firstname'])) {
+        $qb->andWhere($qb->expr()->eq('u.firstname', ':firstname'));
+
+        $params['firstname'] = $formValues['firstname'];
+    }
+
+    if (!empty($formValues['lastname'])) {
+        $qb->andWhere($qb->expr()->eq('u.lastname', ':lastname'));
+
+        $params['lastname'] = $formValues['lastname'];
+    }
+
+    if (!empty($formValues['start_date'])) {
+        $qb->andWhere(
+            $qb->expr()->andX(
+                $qb->expr()->gte('te.startDate', ':start_date'),
+                $qb->expr()->lte('te.exeDate', ':end_date')
+            )
+        );
+
+        $params['start_date'] = api_get_utc_datetime($formValues['start_date'].' 00:00:00', false, true);
+        $params['end_date'] = api_get_utc_datetime($formValues['start_date'].' 23:59:59', false, true);
+    }
+
+    if (empty($params)) {
+        return [];
+    }
+
+    if ($cId && !empty($formValues['id'])) {
+        $qb->andWhere($qb->expr()->eq('q.iid', ':q_id'));
+
+        $params['q_id'] = $formValues['id'];
+    }
+
+    $qb->setParameters($params);
+
+    $query = $qb->getQuery();
+
+    return $query->getResult();
+}
+
+function getSnapshotListForLevel(int $level, TrackEExercises $trackExe): string
+{
+    $monitoringPluginIsEnabled = ExerciseMonitoringPlugin::create()->isEnabled(true);
+
+    if (!$monitoringPluginIsEnabled) {
+        return '';
+    }
+
+    $user = api_get_user_entity($trackExe->getExeUserId());
+    $monitoringLogRepository = Database::getManager()->getRepository(MonitoringLog::class);
+
+    $monitoringLogsByQuestion = $monitoringLogRepository->findByLevelAndExe($level, $trackExe);
+    $snapshotList = [];
+
+    /** @var MonitoringLog $logByQuestion */
+    foreach ($monitoringLogsByQuestion as $logByQuestion) {
+        $snapshotUrl = ExerciseMonitoringPlugin::generateSnapshotUrl(
+            $user->getId(),
+            $logByQuestion->getImageFilename()
+        );
+        $snapshotList[] = api_get_local_time($logByQuestion->getCreatedAt()).' '.$snapshotUrl;
+    }
+
+    return implode(PHP_EOL, $snapshotList);
+}
--- a/plugin/exercisefocused/pages/log.php
+++ b/plugin/exercisefocused/pages/log.php
@ -0,0 +1,30 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseFocused\Controller\LogController;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_course_script(true);
+
+$em = Database::getManager();
+$logRepository = $em->getRepository(Log::class);
+
+$logController = new LogController(
+    ExerciseFocusedPlugin::create(),
+    HttpRequest::createFromGlobals(),
+    $em,
+    $logRepository
+);
+
+try {
+    $response = $logController();
+} catch (Exception $e) {
+    $response = HttpResponse::create('', HttpResponse::HTTP_FORBIDDEN);
+}
+
+$response->send();
--- a/plugin/exercisefocused/pages/reporting.php
+++ b/plugin/exercisefocused/pages/reporting.php
@ -0,0 +1,34 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseFocused\Controller\ReportingController;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_course_script(true);
+
+if (!api_is_allowed_to_edit()) {
+    api_not_allowed(true);
+}
+
+$em = Database::getManager();
+$logRepository = $em->getRepository(Log::class);
+
+$startController = new ReportingController(
+    ExerciseFocusedPlugin::create(),
+    HttpRequest::createFromGlobals(),
+    $em,
+    $logRepository
+);
+
+//try {
+    $response = $startController();
+//} catch (Exception $e) {
+    //$response = HttpResponse::create('', HttpResponse::HTTP_FORBIDDEN);
+//}
+
+$response->send();
--- a/plugin/exercisefocused/plugin.php
+++ b/plugin/exercisefocused/plugin.php
@ -0,0 +1,10 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$plugin_info = ExerciseFocusedPlugin::create()->get_info();
+
+$plugin_info['templates'] = [
+    'templates/script.html.twig',
+    'templates/block.html.twig',
+];
--- a/plugin/exercisefocused/src/Controller/AdminController.php
+++ b/plugin/exercisefocused/src/Controller/AdminController.php
@ -0,0 +1,52 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Controller;
+
+use Chamilo\PluginBundle\ExerciseFocused\Traits\ReportingFilterTrait;
+use Display;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class AdminController extends BaseController
+{
+    use ReportingFilterTrait;
+
+    public function __invoke(): HttpResponse
+    {
+        parent::__invoke();
+
+        $form = $this->createForm();
+
+        $results = [];
+
+        if ($form->validate()) {
+            $results = $this->findResults(
+                $form->exportValues()
+            );
+        }
+
+        $table = $this->createTable($results);
+
+        $content = $form->returnForm()
+            .Display::page_subheader2($this->plugin->get_lang('ReportByAttempts'))
+            .$table->toHtml();
+
+        $this->setBreadcrumb();
+
+        return $this->renderView(
+            $this->plugin->get_title(),
+            $content
+        );
+    }
+
+    private function setBreadcrumb()
+    {
+        $codePath = api_get_path(WEB_CODE_PATH);
+
+        $GLOBALS['interbreadcrumb'][] = [
+            'url' => $codePath.'admin/index.php',
+            'name' => get_lang('Administration'),
+        ];
+    }
+}
--- a/plugin/exercisefocused/src/Controller/BaseController.php
+++ b/plugin/exercisefocused/src/Controller/BaseController.php
@ -0,0 +1,86 @@
+<?php
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Controller;
+
+use Chamilo\PluginBundle\ExerciseFocused\Repository\LogRepository;
+use Doctrine\ORM\EntityManager;
+use Exception;
+use ExerciseFocusedPlugin;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+use Template;
+
+abstract class BaseController
+{
+    /**
+     * @var ExerciseFocusedPlugin
+     */
+    protected $plugin;
+
+    /**
+     * @var HttpRequest
+     */
+    protected $request;
+
+    /**
+     * @var EntityManager
+     */
+    protected $em;
+
+    /**
+     * @var LogRepository
+     */
+    protected $logRepository;
+
+    /**
+     * @var Template
+     */
+    protected $template;
+
+    public function __construct(
+        ExerciseFocusedPlugin $plugin,
+        HttpRequest $request,
+        EntityManager $em,
+        LogRepository $logRepository
+    ) {
+        $this->plugin = $plugin;
+        $this->request = $request;
+        $this->em = $em;
+        $this->logRepository = $logRepository;
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function __invoke(): HttpResponse
+    {
+        if (!$this->plugin->isEnabled(true)) {
+            throw new Exception();
+        }
+
+        return HttpResponse::create();
+    }
+
+    protected function renderView(
+        string $title,
+        string $content,
+        ?string $header = null,
+        array $actions = []
+    ): HttpResponse {
+        if (!$header) {
+            $header = $title;
+        }
+
+        $this->template = new Template($title);
+        $this->template->assign('header', $header);
+        $this->template->assign('actions', implode(PHP_EOL, $actions));
+        $this->template->assign('content', $content);
+
+        ob_start();
+        $this->template->display_one_col_template();
+        $html = ob_get_contents();
+        ob_end_clean();
+
+        return HttpResponse::create($html);
+    }
+}
--- a/plugin/exercisefocused/src/Controller/DetailController.php
+++ b/plugin/exercisefocused/src/Controller/DetailController.php
@ -0,0 +1,98 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Controller;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuizQuestion;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Chamilo\PluginBundle\ExerciseFocused\Traits\DetailControllerTrait;
+use Doctrine\ORM\OptimisticLockException;
+use Doctrine\ORM\ORMException;
+use Doctrine\ORM\TransactionRequiredException;
+use Exception;
+use Exercise;
+use HTML_Table;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class DetailController extends BaseController
+{
+    use DetailControllerTrait;
+
+    /**
+     * @throws OptimisticLockException
+     * @throws TransactionRequiredException
+     * @throws ORMException
+     * @throws Exception
+     */
+    public function __invoke(): HttpResponse
+    {
+        parent::__invoke();
+
+        $exeId = $this->request->query->getInt('id');
+        $exe = $this->em->find(TrackEExercises::class, $exeId);
+
+        if (!$exe) {
+            throw new Exception();
+        }
+
+        $user = api_get_user_entity($exe->getExeUserId());
+
+        $objExercise = new Exercise($exe->getCId());
+        $objExercise->read($exe->getExeExoId());
+
+        $logs = $this->logRepository->findBy(['exe' => $exe], ['updatedAt' => 'ASC']);
+        $table = $this->getTable($objExercise, $logs);
+
+        $content = $this->generateHeader($objExercise, $user, $exe)
+            .'<hr>'
+            .$table->toHtml();
+
+        return HttpResponse::create($content);
+    }
+
+    /**
+     * @param array<int, Log> $logs
+     *
+     * @return void
+     */
+    private function getTable(Exercise $objExercise, array $logs): HTML_Table
+    {
+        $table = new HTML_Table(['class' => 'table table-hover table-striped data_table']);
+        $table->setHeaderContents(0, 0, get_lang('Action'));
+        $table->setHeaderContents(0, 1, get_lang('DateTime'));
+        $table->setHeaderContents(0, 2, $this->plugin->get_lang('LevelReached'));
+
+        $row = 1;
+
+        foreach ($logs as $log) {
+            $strLevel = '';
+
+            if (ONE_PER_PAGE == $objExercise->selectType()) {
+                try {
+                    $question = $this->em->find(CQuizQuestion::class, $log->getLevel());
+
+                    $strLevel = $question->getQuestion();
+                } catch (Exception $exception) {
+                }
+            }
+
+            $table->setCellContents(
+                $row,
+                0,
+                $this->plugin->getActionTitle($log->getAction())
+            );
+            $table->setCellContents(
+                $row,
+                1,
+                api_get_local_time($log->getCreatedAt(), null, null, true, true, true)
+            );
+            $table->setCellContents($row, 2, $strLevel);
+
+            $row++;
+        }
+
+        return $table;
+    }
+}
--- a/plugin/exercisefocused/src/Controller/LogController.php
+++ b/plugin/exercisefocused/src/Controller/LogController.php
@ -0,0 +1,97 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Controller;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuizQuestion;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use ChamiloSession;
+use Exception;
+use Exercise;
+use ExerciseFocusedPlugin;
+use Security;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Response;
+
+class LogController extends BaseController
+{
+    public const VALID_ACTIONS = [
+        Log::TYPE_OUTFOCUSED,
+        Log::TYPE_RETURN,
+        Log::TYPE_OUTFOCUSED_LIMIT,
+        Log::TYPE_TIME_LIMIT,
+    ];
+
+    /**
+     * @throws Exception
+     */
+    public function __invoke(): Response
+    {
+        parent::__invoke();
+
+        $tokenIsValid = Security::check_token('get', null, 'exercisefocused');
+
+        if (!$tokenIsValid) {
+            throw new Exception('token invalid');
+        }
+
+        $action = $this->request->query->get('action');
+        $levelId = $this->request->query->getInt('level_id');
+
+        $exeId = (int) ChamiloSession::read('exe_id');
+
+        if (!in_array($action, self::VALID_ACTIONS)) {
+            throw new Exception('action invalid');
+        }
+
+        $trackingExercise = $this->em->find(TrackEExercises::class, $exeId);
+
+        if (!$trackingExercise) {
+            throw new Exception('no exercise attempt');
+        }
+
+        $objExercise = new Exercise($trackingExercise->getCId());
+        $objExercise->read($trackingExercise->getExeExoId());
+
+        $level = 0;
+
+        if (ONE_PER_PAGE == $objExercise->selectType()) {
+            $question = $this->em->find(CQuizQuestion::class, $levelId);
+
+            if (!$question) {
+                throw new Exception('Invalid level');
+            }
+
+            $level = $question->getIid();
+        }
+
+        $log = new Log();
+        $log
+            ->setAction($action)
+            ->setExe($trackingExercise)
+            ->setLevel($level);
+
+        $this->em->persist($log);
+        $this->em->flush();
+
+        $remainingOutfocused = -1;
+
+        if ('true' === $this->plugin->get(ExerciseFocusedPlugin::SETTING_ENABLE_OUTFOCUSED_LIMIT)) {
+            $countOutfocused = $this->logRepository->countByActionInExe($trackingExercise, Log::TYPE_OUTFOCUSED);
+
+            $remainingOutfocused = (int) $this->plugin->get(ExerciseFocusedPlugin::SETTING_OUTFOCUSED_LIMIT) - $countOutfocused;
+        }
+
+        $exercise = new Exercise(api_get_course_int_id());
+        $exercise->read($trackingExercise->getExeExoId());
+
+        $json = [
+            'sec_token' => Security::get_token('exercisefocused'),
+            'remainingOutfocused' => $remainingOutfocused,
+        ];
+
+        return JsonResponse::create($json);
+    }
+}
--- a/plugin/exercisefocused/src/Controller/ReportingController.php
+++ b/plugin/exercisefocused/src/Controller/ReportingController.php
@ -0,0 +1,138 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Controller;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\PluginBundle\ExerciseFocused\Traits\ReportingFilterTrait;
+use Display;
+use Exception;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class ReportingController extends BaseController
+{
+    use ReportingFilterTrait;
+
+    public function __invoke(): HttpResponse
+    {
+        parent::__invoke();
+
+        $exercise = $this->em->find(
+            CQuiz::class,
+            $this->request->query->getInt('id')
+        );
+
+        if (!$exercise) {
+            throw new Exception();
+        }
+
+        $courseCode = api_get_course_id();
+        $sessionId = api_get_session_id();
+
+        $tab1 = $this->generateTabResume($exercise);
+
+        $tab2 = $this->generateTabSearch($exercise, $courseCode, $sessionId);
+
+        $tab3 = $this->generateTabSampling($exercise);
+
+        $content = Display::tabs(
+            [
+                $this->plugin->get_lang('ReportByAttempts'),
+                get_lang('Search'),
+                $this->plugin->get_lang('RandomSampling'),
+            ],
+            [$tab1, $tab2, $tab3],
+            'exercise-focused-tabs',
+            [],
+            [],
+            isset($_GET['submit']) ? 2 : 1
+        );
+
+        $this->setBreadcrumb($exercise->getId());
+
+        return $this->renderView(
+            $this->plugin->get_lang('ReportByAttempts'),
+            $content,
+            $exercise->getTitle()
+        );
+    }
+
+    private function generateTabResume(CQuiz $exercise): string
+    {
+        $results = $this->findResultsInCourse($exercise->getId());
+
+        return $this->createTable($results)->toHtml();
+    }
+
+    /**
+     * @throws Exception
+     */
+    private function generateTabSearch(CQuiz $exercise, string $courseCode, int $sessionId): string
+    {
+        $form = $this->createForm();
+        $form->updateAttributes(['action' => api_get_self().'?'.api_get_cidreq().'&id='.$exercise->getId()]);
+        $form->addHidden('cidReq', $courseCode);
+        $form->addHidden('id_session', $sessionId);
+        $form->addHidden('gidReq', 0);
+        $form->addHidden('gradebook', 0);
+        $form->addHidden('origin', api_get_origin());
+        $form->addHidden('id', $exercise->getId());
+
+        $tableHtml = '';
+        $actions = '';
+
+        if ($form->validate()) {
+            $formValues = $form->exportValues();
+
+            $actionLeft = Display::url(
+                Display::return_icon('export_excel.png', get_lang('ExportExcel'), [], ICON_SIZE_MEDIUM),
+                api_get_path(WEB_PLUGIN_PATH).'exercisefocused/pages/export.php?'.http_build_query($formValues)
+            );
+            $actionRight = Display::toolbarButton(
+                get_lang('Clean'),
+                api_get_path(WEB_PLUGIN_PATH)
+                .'exercisefocused/pages/reporting.php?'
+                .api_get_cidreq().'&'.http_build_query(['id' => $exercise->getId(), 'submit' => '']),
+                'search'
+            );
+
+            $actions = Display::toolbarAction(
+                'em-actions',
+                [$actionLeft, $actionRight]
+            );
+
+            $results = $this->findResults($formValues);
+
+            $tableHtml = $this->createTable($results)->toHtml();
+        }
+
+        return $form->returnForm().$actions.$tableHtml;
+    }
+
+    private function generateTabSampling(CQuiz $exercise): string
+    {
+        $results = $this->findRandomResults($exercise->getId());
+
+        return $this->createTable($results)->toHtml();
+    }
+
+    /**
+     * @return array<int, TrackEExercises>
+     */
+    private function setBreadcrumb($exerciseId): void
+    {
+        $codePath = api_get_path('WEB_CODE_PATH');
+        $cidReq = api_get_cidreq();
+
+        $GLOBALS['interbreadcrumb'][] = [
+            'url' => $codePath."exercise/exercise.php?$cidReq",
+            'name' => get_lang('Exercises'),
+        ];
+        $GLOBALS['interbreadcrumb'][] = [
+            'url' => $codePath."exercise/exercise_report.php?$cidReq&".http_build_query(['exerciseId' => $exerciseId]),
+            'name' => get_lang('StudentScore'),
+        ];
+    }
+}
--- a/plugin/exercisefocused/src/Entity/Log.php
+++ b/plugin/exercisefocused/src/Entity/Log.php
@ -0,0 +1,99 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Entity;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CoreBundle\Traits\TimestampableTypedEntity;
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * Class EmbedRegistry.
+ *
+ * @package Chamilo\PluginBundle\Entity\EmbedRegistry
+ *
+ * @ORM\Entity(repositoryClass="Chamilo\PluginBundle\ExerciseFocused\Repository\LogRepository")
+ * @ORM\Table(name="plugin_exercisefocused_log")
+ */
+class Log
+{
+    use TimestampableTypedEntity;
+
+    public const TYPE_RETURN = 'return';
+    public const TYPE_OUTFOCUSED = 'outfocused';
+    public const TYPE_OUTFOCUSED_LIMIT = 'outfocused_limit';
+    public const TYPE_TIME_LIMIT = 'time_limit';
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="id", type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     */
+    private $id;
+
+    /**
+     * @var TrackEExercises
+     *
+     * @ORM\ManyToOne(targetEntity="Chamilo\CoreBundle\Entity\TrackEExercises")
+     * @ORM\JoinColumn(name="exe_id", referencedColumnName="exe_id", onDelete="SET NULL")
+     */
+    private $exe;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="level", type="integer")
+     */
+    private $level;
+
+    /**
+     * @var string
+     *
+     * @ORM\Column(name="action", type="string", nullable=false)
+     */
+    private $action;
+
+    public function getId(): int
+    {
+        return $this->id;
+    }
+
+    public function getExe(): TrackEExercises
+    {
+        return $this->exe;
+    }
+
+    public function setExe(TrackEExercises $exe): Log
+    {
+        $this->exe = $exe;
+
+        return $this;
+    }
+
+    public function getLevel(): int
+    {
+        return $this->level;
+    }
+
+    public function setLevel(int $level): self
+    {
+        $this->level = $level;
+
+        return $this;
+    }
+
+    public function getAction(): string
+    {
+        return $this->action;
+    }
+
+    public function setAction(string $action): Log
+    {
+        $this->action = $action;
+
+        return $this;
+    }
+}
--- a/plugin/exercisefocused/src/ExerciseFocusedPlugin.php
+++ b/plugin/exercisefocused/src/ExerciseFocusedPlugin.php
@ -0,0 +1,213 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CourseBundle\Entity\CTool;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\ORM\Tools\ToolsException;
+
+class ExerciseFocusedPlugin extends Plugin
+{
+    public const SETTING_TOOL_ENABLE = 'tool_enable';
+    public const SETTING_ENABLE_TIME_LIMIT = 'enable_time_limit';
+    public const SETTING_TIME_LIMIT = 'time_limit';
+    public const SETTING_ENABLE_OUTFOCUSED_LIMIT = 'enable_outfocused_limit';
+    public const SETTING_OUTFOCUSED_LIMIT = 'outfocused_limit';
+    public const SETTING_SESSION_FIELD_FILTERS = 'session_field_filters';
+    public const SETTING_PERCENTAGE_SAMPLING = 'percentage_sampling';
+
+    public const FIELD_SELECTED = 'exercisefocused_selected';
+
+    private const TABLE_LOG = 'plugin_exercisefocused_log';
+
+    protected function __construct()
+    {
+        $settings = [
+            self::SETTING_TOOL_ENABLE => 'boolean',
+            self::SETTING_ENABLE_TIME_LIMIT => 'boolean',
+            self::SETTING_TIME_LIMIT => 'text',
+            self::SETTING_ENABLE_OUTFOCUSED_LIMIT => 'boolean',
+            self::SETTING_OUTFOCUSED_LIMIT => 'text',
+            self::SETTING_SESSION_FIELD_FILTERS => 'text',
+            self::SETTING_PERCENTAGE_SAMPLING => 'text',
+        ];
+
+        parent::__construct(
+            "0.0.1",
+            "Angel Fernando Quiroz Campos <angel.quiroz@beeznest.com>",
+            $settings
+        );
+    }
+
+    public static function create(): ?ExerciseFocusedPlugin
+    {
+        static $result = null;
+
+        return $result ?: $result = new self();
+    }
+
+    /**
+     * @throws ToolsException
+     */
+    public function install()
+    {
+        $em = Database::getManager();
+
+        if ($em->getConnection()->getSchemaManager()->tablesExist([self::TABLE_LOG])) {
+            return;
+        }
+
+        $schemaTool = new SchemaTool($em);
+        $schemaTool->createSchema(
+            [
+                $em->getClassMetadata(Log::class),
+            ]
+        );
+
+        $objField = new ExtraField('exercise');
+        $objField->save([
+            'variable' => self::FIELD_SELECTED,
+            'field_type' => ExtraField::FIELD_TYPE_CHECKBOX,
+            'display_text' => $this->get_title(),
+            'visible_to_self' => true,
+            'changeable' => true,
+            'filter' => false,
+        ]);
+    }
+
+    public function uninstall()
+    {
+        $em = Database::getManager();
+
+        if (!$em->getConnection()->getSchemaManager()->tablesExist([self::TABLE_LOG])) {
+            return;
+        }
+
+        $schemaTool = new SchemaTool($em);
+        $schemaTool->dropSchema(
+            [
+                $em->getClassMetadata(Log::class),
+            ]
+        );
+
+        $objField = new ExtraField('exercise');
+        $extraFieldInfo = $objField->get_handler_field_info_by_field_variable(self::FIELD_SELECTED);
+
+        if ($extraFieldInfo) {
+            $objField->delete($extraFieldInfo['id']);
+        }
+    }
+
+    public function getAdminUrl(): string
+    {
+        $name = $this->get_name();
+        $webPath = api_get_path(WEB_PLUGIN_PATH).$name;
+
+        return "$webPath/admin.php";
+    }
+
+    public function getActionTitle($action): string
+    {
+        switch ($action) {
+            case Log::TYPE_OUTFOCUSED:
+                return $this->get_lang('Outfocused');
+            case Log::TYPE_RETURN:
+                return $this->get_lang('Return');
+            case Log::TYPE_OUTFOCUSED_LIMIT:
+                return $this->get_lang('MaxOutfocusedReached');
+            case Log::TYPE_TIME_LIMIT:
+                return $this->get_lang('TimeLimitReached');
+        }
+
+        return '';
+    }
+
+    public function getLinkReporting(int $exerciseId): string
+    {
+        if (!$this->isEnabled(true)) {
+            return '';
+        }
+
+        $values = (new ExtraFieldValue('exercise'))
+            ->get_values_by_handler_and_field_variable($exerciseId, self::FIELD_SELECTED);
+
+        if (!$values || !$values['value']) {
+            return '';
+        }
+
+        $icon = Display::return_icon(
+            'window_list_slide.png',
+            $this->get_lang('ReportByAttempts'),
+            [],
+            ICON_SIZE_MEDIUM
+        );
+
+        $url = api_get_path(WEB_PLUGIN_PATH)
+            .'exercisefocused/pages/reporting.php?'
+            .api_get_cidreq().'&'.http_build_query(['id' => $exerciseId]);
+
+        return Display::url($icon, $url);
+    }
+
+    public function getSessionFieldList(): array
+    {
+        $settingField = $this->get(self::SETTING_SESSION_FIELD_FILTERS);
+
+        $fields = explode(',', $settingField);
+
+        return array_map('trim', $fields);
+    }
+
+    public function isEnableForExercise(int $exerciseId): bool
+    {
+        $renderRegion = $this->isEnabled(true)
+            && strpos($_SERVER['SCRIPT_NAME'], '/main/exercise/exercise_submit.php') !== false;
+
+        if (!$renderRegion) {
+            return false;
+        }
+
+        $objFieldValue = new ExtraFieldValue('exercise');
+        $values = $objFieldValue->get_values_by_handler_and_field_variable(
+            $exerciseId,
+            self::FIELD_SELECTED
+        );
+
+        return $values && (bool) $values['value'];
+    }
+
+    public function calculateMotive(int $outfocusedLimitCount, int $timeLimitCount)
+    {
+        $motive = $this->get_lang('MotiveExerciseFinished');
+
+        if ($outfocusedLimitCount > 0) {
+            $motive = $this->get_lang('MaxOutfocusedReached');
+        }
+
+        if ($timeLimitCount > 0) {
+            $motive = $this->get_lang('TimeLimitReached');
+        }
+
+        return $motive;
+    }
+
+    protected function createLinkToCourseTool($name, $courseId, $iconName = null, $link = null, $sessionId = 0, $category = 'plugin'): ?CTool
+    {
+        $tool = parent::createLinkToCourseTool($name, $courseId, $iconName, $link, $sessionId, $category);
+
+        if (!$tool) {
+            return null;
+        }
+
+        $tool->setName(
+            $tool->getName().':teacher'
+        );
+
+        $em = Database::getManager();
+        $em->persist($tool);
+        $em->flush();
+
+        return $tool;
+    }
+}
--- a/plugin/exercisefocused/src/Repository/LogRepository.php
+++ b/plugin/exercisefocused/src/Repository/LogRepository.php
@ -0,0 +1,28 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Repository;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Doctrine\ORM\EntityRepository;
+
+class LogRepository extends EntityRepository
+{
+    public function countByActionInExe(TrackEExercises $exe, string $action): int
+    {
+        return $this->count([
+            'exe' => $exe,
+            'action' => $action,
+        ]);
+    }
+
+    public function countByActionAndLevel(TrackEExercises $exe, string $action, int $level): int
+    {
+        return $this->count([
+            'exe' => $exe,
+            'action' => $action,
+            'level' => $level,
+        ]);
+    }
+}
--- a/plugin/exercisefocused/src/Traits/DetailControllerTrait.php
+++ b/plugin/exercisefocused/src/Traits/DetailControllerTrait.php
@ -0,0 +1,28 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Traits;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\UserBundle\Entity\User;
+use Display;
+use Exercise;
+
+trait DetailControllerTrait
+{
+    private function generateHeader(Exercise $objExercise, User $student, TrackEExercises $trackExe): string
+    {
+        $startDate = api_get_local_time($trackExe->getStartDate(), null, null, true, true, true);
+        $endDate = api_get_local_time($trackExe->getExeDate(), null, null, true, true, true);
+
+        return Display::page_subheader2($objExercise->selectTitle())
+            .Display::tag('p', $student->getCompleteNameWithUsername(), ['class' => 'lead'])
+            .Display::tag(
+                'p',
+                sprintf(get_lang('QuizRemindStartDate'), $startDate)
+                .sprintf(get_lang('QuizRemindEndDate'), $endDate)
+                .sprintf(get_lang('QuizRemindDuration'), api_format_time($trackExe->getExeDuration()))
+            );
+    }
+}
--- a/plugin/exercisefocused/src/Traits/ReportingFilterTrait.php
+++ b/plugin/exercisefocused/src/Traits/ReportingFilterTrait.php
@ -0,0 +1,393 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseFocused\Traits;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\PluginBundle\ExerciseFocused\Entity\Log;
+use Chamilo\UserBundle\Entity\User;
+use Database;
+use Display;
+use Doctrine\ORM\Query\Expr\Join;
+use Exception;
+use ExerciseFocusedPlugin;
+use ExerciseMonitoringPlugin;
+use ExtraField;
+use ExtraFieldValue;
+use FormValidator;
+use HTML_Table;
+
+trait ReportingFilterTrait
+{
+    /**
+     * @throws Exception
+     */
+    protected function createForm(): FormValidator
+    {
+        $extraFieldNameList = $this->plugin->getSessionFieldList();
+        $cId = api_get_course_int_id();
+        $sessionId = api_get_session_id();
+
+        $form = new FormValidator('exercisefocused', 'get');
+        $form->addText('username', get_lang('LoginName'), false);
+        $form->addText('firstname', get_lang('FirstName'), false);
+        $form->addText('lastname', get_lang('LastName'), false);
+
+        if ($extraFieldNameList && ($sessionId || !$cId)) {
+            (new ExtraField('session'))
+                ->addElements(
+                    $form,
+                    $sessionId,
+                    [],
+                    false,
+                    false,
+                    $extraFieldNameList
+                );
+
+            $extraNames = [];
+
+            foreach ($extraFieldNameList as $key => $value) {
+                $extraNames[$key] = "extra_$value";
+            }
+
+            if ($sessionId) {
+                $form->freeze($extraNames);
+            }
+        }
+
+        $form->addDatePicker('start_date', get_lang('StartDate'));
+        $form->addButtonSearch(get_lang('Search'));
+        //$form->protect();
+
+        return $form;
+    }
+
+    /**
+     * @throws Exception
+     */
+    protected function findResults(array $formValues = []): array
+    {
+        $cId = api_get_course_int_id();
+        $sId = api_get_session_id();
+
+        $qb = $this->em->createQueryBuilder();
+        $qb
+            ->select('te AS exe, q.title, te.startDate, u.id AS user_id, u.firstname, u.lastname, u.username, te.sessionId, te.cId')
+            ->from(TrackEExercises::class, 'te')
+            ->innerJoin(CQuiz::class, 'q', Join::WITH, 'te.exeExoId = q.iid')
+            ->innerJoin(User::class, 'u', Join::WITH, 'te.exeUserId = u.id');
+
+        $params = [];
+
+        if ($cId) {
+            $qb->andWhere($qb->expr()->eq('te.cId', ':cId'));
+
+            $params['cId'] = $cId;
+
+            $sessionItemIdList = $sId ? [$sId] : [];
+        } else {
+            $sessionItemIdList = $this->getSessionIdFromFormValues(
+                $formValues,
+                $this->plugin->getSessionFieldList()
+            );
+        }
+
+        if ($sessionItemIdList) {
+            $qb->andWhere($qb->expr()->in('te.sessionId', ':sessionItemIdList'));
+
+            $params['sessionItemIdList'] = $sessionItemIdList;
+        }
+
+        if (!empty($formValues['username'])) {
+            $qb->andWhere($qb->expr()->eq('u.username', ':username'));
+
+            $params['username'] = $formValues['username'];
+        }
+
+        if (!empty($formValues['firstname'])) {
+            $qb->andWhere($qb->expr()->like('u.firstname', ':firstname'));
+
+            $params['firstname'] = $formValues['firstname'].'%';
+        }
+
+        if (!empty($formValues['lastname'])) {
+            $qb->andWhere($qb->expr()->like('u.lastname', ':lastname'));
+
+            $params['lastname'] = $formValues['lastname'].'%';
+        }
+
+        if (!empty($formValues['start_date'])) {
+            $qb->andWhere(
+                $qb->expr()->andX(
+                    $qb->expr()->gte('te.startDate', ':start_date'),
+                    $qb->expr()->lte('te.exeDate', ':end_date')
+                )
+            );
+
+            $params['start_date'] = api_get_utc_datetime($formValues['start_date'].' 00:00:00', false, true);
+            $params['end_date'] = api_get_utc_datetime($formValues['start_date'].' 23:59:59', false, true);
+        }
+
+        if (empty($params)) {
+            return [];
+        }
+
+        if ($cId && !empty($formValues['id'])) {
+            $qb->andWhere($qb->expr()->eq('q.iid', ':q_id'));
+
+            $params['q_id'] = $formValues['id'];
+        }
+
+        $qb->setParameters($params);
+
+        return $this->formatResults(
+            $qb->getQuery()->getResult()
+        );
+    }
+
+    protected function formatResults(array $queryResults): array
+    {
+        $results = [];
+
+        foreach ($queryResults as $value) {
+            $outfocusedCount = $this->logRepository->countByActionInExe($value['exe'], Log::TYPE_OUTFOCUSED);
+            $returnCount = $this->logRepository->countByActionInExe($value['exe'], Log::TYPE_RETURN);
+            $outfocusedLimitCount = $this->logRepository->countByActionInExe($value['exe'], Log::TYPE_OUTFOCUSED_LIMIT);
+            $timeLimitCount = $this->logRepository->countByActionInExe($value['exe'], Log::TYPE_TIME_LIMIT);
+
+            $class = 'success';
+            $motive = $this->plugin->get_lang('MotiveExerciseFinished');
+
+            if ($outfocusedCount > 0 || $returnCount > 0) {
+                $class = 'warning';
+            }
+
+            if ($outfocusedLimitCount > 0 || $timeLimitCount > 0) {
+                $class = 'danger';
+
+                if ($outfocusedLimitCount > 0) {
+                    $motive = $this->plugin->get_lang('MaxOutfocusedReached');
+                }
+
+                if ($timeLimitCount > 0) {
+                    $motive = $this->plugin->get_lang('TimeLimitReached');
+                }
+            }
+
+            $session = api_get_session_entity($value['sessionId']);
+            $course = api_get_course_entity($value['cId']);
+
+            $results[] = [
+                'id' => $value['exe']->getExeId(),
+                'quiz_title' => $value['title'],
+                'user_id' => $value['user_id'],
+                'username' => $value['username'],
+                'firstname' => $value['firstname'],
+                'lastname' => $value['lastname'],
+                'start_date' => $value['exe']->getStartDate(),
+                'end_date' => $value['exe']->getExeDate(),
+                'count_outfocused' => $outfocusedCount,
+                'count_return' => $returnCount,
+                'motive' => Display::span($motive, ['class' => "text-$class"]),
+                'class' => $class,
+                'session_name' => $session ? $session->getName() : null,
+                'course_title' => $course->getTitle(),
+            ];
+        }
+
+        return $results;
+    }
+
+    protected function createTable(array $resultData): HTML_Table
+    {
+        $courseId = api_get_course_int_id();
+
+        $pluginMonitoring = ExerciseMonitoringPlugin::create();
+        $isPluginMonitoringEnabled = $pluginMonitoring->isEnabled(true);
+
+        $detailIcon = Display::return_icon('forum_listview.png', get_lang('Detail'));
+
+        $urlDetail = api_get_path(WEB_PLUGIN_PATH).'exercisefocused/pages/detail.php?'.api_get_cidreq().'&';
+
+        $tableHeaders = [];
+        $tableHeaders[] = get_lang('LoginName');
+        $tableHeaders[] = get_lang('FirstName');
+        $tableHeaders[] = get_lang('LastName');
+
+        if (!$courseId) {
+            $tableHeaders[] = get_lang('SessionName');
+            $tableHeaders[] = get_lang('CourseTitle');
+            $tableHeaders[] = get_lang('ExerciseName');
+        }
+
+        $tableHeaders[] = $this->plugin->get_lang('ExerciseStartDateAndTime');
+        $tableHeaders[] = $this->plugin->get_lang('ExerciseEndDateAndTime');
+        $tableHeaders[] = $this->plugin->get_lang('Outfocused');
+        $tableHeaders[] = $this->plugin->get_lang('Returns');
+        $tableHeaders[] = $this->plugin->get_lang('Motive');
+        $tableHeaders[] = get_lang('Actions');
+
+        $tableData = [];
+
+        foreach ($resultData as $result) {
+            $actionLinks = Display::url(
+                $detailIcon,
+                $urlDetail.http_build_query(['id' => $result['id']]),
+                [
+                    'class' => 'ajax',
+                    'data-title' => get_lang('Detail'),
+                ]
+            );
+
+            if ($isPluginMonitoringEnabled) {
+                $actionLinks .= $pluginMonitoring->generateDetailLink(
+                    (int) $result['id'],
+                    $result['user_id']
+                );
+            }
+
+            $row = [];
+
+            $row[] = $result['username'];
+            $row[] = $result['firstname'];
+            $row[] = $result['lastname'];
+
+            if (!$courseId) {
+                $row[] = $result['session_name'];
+                $row[] = $result['course_title'];
+                $row[] = $result['quiz_title'];
+            }
+
+            $row[] = api_get_local_time($result['start_date'], null, null, true, true, true);
+            $row[] = api_get_local_time($result['end_date'], null, null, true, true, true);
+            $row[] = $result['count_outfocused'];
+            $row[] = $result['count_return'];
+            $row[] = $result['motive'];
+            $row[] = $actionLinks;
+
+            $tableData[] = $row;
+        }
+
+        $table = new HTML_Table(['class' => 'table table-hover table-striped data_table']);
+        $table->setHeaders($tableHeaders);
+        $table->setData($tableData);
+        $table->setColAttributes($courseId ? 3 : 6, ['class' => 'text-center']);
+        $table->setColAttributes($courseId ? 4 : 7, ['class' => 'text-center']);
+        $table->setColAttributes($courseId ? 5 : 8, ['class' => 'text-right']);
+        $table->setColAttributes($courseId ? 6 : 9, ['class' => 'text-right']);
+        $table->setColAttributes($courseId ? 7 : 10, ['class' => 'text-center']);
+        $table->setColAttributes($courseId ? 8 : 11, ['class' => 'text-right']);
+
+        foreach ($resultData as $idx => $result) {
+            $table->setRowAttributes($idx + 1, ['class' => $result['class']], true);
+        }
+
+        return $table;
+    }
+
+    protected function findResultsInCourse(int $exerciseId, bool $randomResults = false): array
+    {
+        $exeIdList = $this->getAttemptsIdForExercise($exerciseId);
+
+        if ($randomResults) {
+            $exeIdList = $this->pickRandomAttempts($exeIdList) ?: $exeIdList;
+        }
+
+        if (empty($exeIdList)) {
+            return [];
+        }
+
+        $qb = $this->em->createQueryBuilder();
+        $qb
+            ->select('te AS exe, q.title, te.startDate, u.id AS user_id, u.firstname, u.lastname, u.username, te.sessionId, te.cId')
+            ->from(TrackEExercises::class, 'te')
+            ->innerJoin(CQuiz::class, 'q', Join::WITH, 'te.exeExoId = q.iid')
+            ->innerJoin(User::class, 'u', Join::WITH, 'te.exeUserId = u.id')
+            ->andWhere(
+                $qb->expr()->in('te.exeId', $exeIdList)
+            )
+            ->addOrderBy('te.startDate');
+
+        return $this->formatResults(
+            $qb->getQuery()->getResult()
+        );
+    }
+
+    protected function findRandomResults(int $exerciseId): array
+    {
+        return $this->findResultsInCourse($exerciseId, true);
+    }
+
+    private function getSessionIdFromFormValues(array $formValues, array $fieldVariableList): array
+    {
+        $fieldItemIdList = [];
+        $objFieldValue = new ExtraFieldValue('session');
+
+        foreach ($fieldVariableList as $fieldVariable) {
+            if (!isset($formValues["extra_$fieldVariable"])) {
+                continue;
+            }
+
+            $itemValues = $objFieldValue->get_item_id_from_field_variable_and_field_value(
+                $fieldVariable,
+                $formValues["extra_$fieldVariable"],
+                false,
+                false,
+                true
+            );
+
+            foreach ($itemValues as $itemValue) {
+                $fieldItemIdList[] = (int) $itemValue['item_id'];
+            }
+        }
+
+        return array_unique($fieldItemIdList);
+    }
+
+    private function getAttemptsIdForExercise(int $exerciseId): array
+    {
+        $cId = api_get_course_int_id();
+        $sId = api_get_session_id();
+
+        $tblTrackExe = Database::get_main_table(TABLE_STATISTIC_TRACK_E_EXERCISES);
+
+        $sessionCondition = api_get_session_condition($sId);
+
+        $result = Database::query(
+            "SELECT exe_id FROM $tblTrackExe
+            WHERE c_id = $cId
+                AND exe_exo_id = $exerciseId
+                $sessionCondition
+            ORDER BY exe_id"
+        );
+
+        return array_column(
+            Database::store_result($result),
+            'exe_id'
+        );
+    }
+
+    private function pickRandomAttempts(array $attemptIdList): array
+    {
+        $settingPercentage = (int) $this->plugin->get(ExerciseFocusedPlugin::SETTING_PERCENTAGE_SAMPLING);
+
+        if (!$settingPercentage) {
+            return [];
+        }
+
+        $percentage = count($attemptIdList) * ($settingPercentage / 100);
+        $round = round($percentage) ?: 1;
+
+        $random = (array) array_rand($attemptIdList, $round);
+
+        $selection = [];
+
+        foreach ($random as $rand) {
+            $selection[] = $attemptIdList[$rand];
+        }
+
+        return $selection;
+    }
+}
--- a/plugin/exercisefocused/templates/block.html.twig
+++ b/plugin/exercisefocused/templates/block.html.twig
@ -0,0 +1,105 @@
+{% if exercisefocused.show_region %}
+    {% set enable_time_limit = 'true' == exercisefocused.plugin_info.obj.get('enable_time_limit') %}
+    {% set time_limit = exercisefocused.plugin_info.obj.get('time_limit') %}
+    {% set enable_outfocused_limit = 'true' == exercisefocused.plugin_info.obj.get('enable_outfocused_limit') %}
+    {% set outfocused_limit = exercisefocused.plugin_info.obj.get('outfocused_limit') %}
+
+    <div id="exercisefocused-block" style="display: none;">
+        <div class="exercisefocused-block__container">
+            <div class="exercisefocused-block__message card">
+                <p class="h3 text-danger">{{ 'YouHaveLeftTheExercise'|get_plugin_lang('ExerciseFocusedPlugin') }}</p>
+
+                {% if enable_time_limit %}
+                    <div id="time-limit-block">
+                        <p class="h4">
+                            {{ 'YouHaveXTimeToReturn'|get_plugin_lang('ExerciseFocusedPlugin')|format(time_limit) }}
+                        </p>
+                    </div>
+                {% endif %}
+
+                {% if enable_outfocused_limit %}
+                    <div id="outfocused-limit-block">
+                        <p class="h4">{{ 'YouAreAllowedXOutfocused'|get_plugin_lang('ExerciseFocusedPlugin')|format(outfocused_limit) }}</p>
+                    </div>
+                {% endif %}
+            </div>
+        </div>
+    </div>
+    <style>
+        #exercisefocused-block {
+            background-color: #CCCC;
+            border: 1px solid #DDD;
+            bottom: 0;
+            left: 0;
+            min-height: 100%;
+            min-width: 100%;
+            position: fixed;
+            right: 0;
+            user-select: none;
+            -ms-user-select: none;
+            -moz-user-select: none;
+            -webkit-user-select: none;
+            top: 0;
+            z-index: 1010;
+        }
+        .exercisefocused-block__container {
+            left: 50%;
+            position: absolute;
+            text-align: center;
+            top: 50%;
+            transform: translate(-50%, -50%);
+            -webkit-transform: translate(-50%, -50%);
+        }
+        .exercisefocused-block__message {
+            margin-bottom: 0;
+            padding: 20px;
+        }
+        .exercisefocused-block__message p,
+        .exercisefocused-block__message span {
+            font-weight: bold;
+        }
+
+        .exercisefocused-backdrop {
+            background-color: rgba(0, 0, 0, 0.02);
+            cursor: not-allowed;
+            height: 100%;
+            position: fixed;
+            top: 0;
+            user-select: none;
+            width: 100%;
+            z-index: 1000;
+        }
+        .exercisefocused-backdrop::before {
+            background-color: #FFF;
+            border-radius: 6px;
+            box-shadow: 0 2px 2px rgba(204, 197, 185, 0.5);
+            content: attr(data-alert);
+            display: block;
+            font-size: 18px;
+            font-weight: 700;
+            margin: 50px auto;
+            opacity: 0;
+            padding: 10px;
+            position: relative;
+            text-align: center;
+            width: 340px;
+            transition: opacity 0s ease-in-out;
+        }
+        .exercisefocused-backdrop:hover::before {
+            opacity: 1;
+        }
+
+        .exercisefocused-backdrop.inmediate::before {
+            transition-delay: 3.5s !important;
+        }
+        .exercisefocused-backdrop.out::before {
+            transition-delay: 0s !important;
+        }
+
+        form#exercise_form {
+            background-color: #FFF;
+            position: relative;
+            z-index: 1005;
+        }
+    </style>
+{% endif %}
--- a/plugin/exercisefocused/templates/script.html.twig
+++ b/plugin/exercisefocused/templates/script.html.twig
@ -0,0 +1,163 @@
+{% if exercisefocused.show_region %}
+    {% set enable_time_limit = 'true' == exercisefocused.plugin_info.obj.get('enable_time_limit') %}
+    {% set time_limit = exercisefocused.plugin_info.obj.get('time_limit') %}
+    {% set enable_outfocused_limit = 'true' == exercisefocused.plugin_info.obj.get('enable_outfocused_limit') %}
+    {% set outfocused_limit = exercisefocused.plugin_info.obj.get('outfocused_limit') %}
+
+    {% set ALL_ON_ONE_PAGE = exercisefocused.exercise_type == 1 %}
+    {% set ONE_PER_PAGE = exercisefocused.exercise_type == 2 %}
+
+<script>
+    $(function () {
+        var $exerciseFocused = $("#exercisefocused-block").appendTo('body');
+        var $timeLimitBlock = $exerciseFocused.find('#time-limit-block');
+        var $timeLimitTarget = $exerciseFocused.find('#time-limit-target');
+        var $outfocusedLimitBlock = $exerciseFocused.find('#outfocused-limit-block');
+        var $outfocusedLimitTarget = $exerciseFocused.find('#outfocused-limit-target');
+
+        var $backdrop = $('<div>')
+            .addClass('exercisefocused-backdrop text-danger')
+            .attr('data-alert', '{{ 'AlertBeforeLeaving'|get_plugin_lang('ExerciseFocusedPlugin') }}')
+            .hover(
+                function () {$backdrop.removeClass('out').addClass('inmediate'); },
+                function () { $backdrop.addClass('out').removeClass('inmediate'); }
+            );
+
+        var $btnSaveNow = $('button[name="save_now"]');
+
+        $backdrop.appendTo('body');
+
+        var secToken = "{{ exercisefocused.sec_token }}";
+        var initDocumentTitle = document.title;
+        var countdownInterval;
+        var remainingTime;
+        var enableTimeLimit = {{ enable_time_limit ? 'true' : 'false' }};
+        var enableOutfocusedLimit = {{ enable_outfocused_limit ? 'true' : 'false' }};
+
+        {% if enable_outfocused_limit %}
+            var remainingOutfocused = {{ exercisefocused.remaining_outfocused }};
+        {% endif %}
+
+        function finishExam() {
+            $(window).off("blur", onBlur)
+            $(window).off("focus", onFocus)
+
+            {% if ALL_ON_ONE_PAGE %}
+                save_now_all('validate');
+            {% elseif ONE_PER_PAGE %}
+                window.quizTimeEnding = true;
+                $('[name="save_now"]').trigger('click');
+            {% endif %}
+        }
+
+        {% if enable_time_limit %}
+            function updateCountdown() {
+                var seconds = remainingTime;
+                var strSeconds = `${seconds.toString().padStart(2, '0')}`;
+
+                $timeLimitTarget.text(strSeconds);
+                document.title = $timeLimitTarget.parent().text();
+
+                remainingTime--;
+
+                if (remainingTime < 0) {
+                    clearInterval(countdownInterval);
+
+                    sendAction('time_limit', function () {
+                        finishExam()
+                    });
+                }
+            }
+        {% endif %}
+
+        function sendAction(action, callback) {
+            {% if ALL_ON_ONE_PAGE %}
+                var levelId = 0;
+            {% elseif ONE_PER_PAGE %}
+                var levelId = $btnSaveNow.data('question') || -1;
+            {% endif %}
+
+            $.ajax({
+                url: "{{ _p.web_plugin }}exercisefocused/pages/log.php",
+                data: {
+                    action: action,
+                    exercisefocused_sec_token: secToken,
+                    level_id: levelId
+                },
+                success: function (response) {
+                    if (!response) {
+                        return;
+                    }
+
+                    secToken = response.sec_token;
+
+                    if (callback) {
+                        callback(response)
+                    }
+                },
+            });
+        }
+
+        function onBlur() {
+            $exerciseFocused.show();
+
+            if (enableOutfocusedLimit) {
+                if (remainingOutfocused <= 0) {
+                    $outfocusedLimitBlock.find('p').text("{{ 'OutfocusedLimitExceeded'|get_plugin_lang('ExerciseFocusedPlugin')|escape('js') }}");
+                    $timeLimitBlock.hide();
+
+                    sendAction('outfocused_limit', function () {
+                        finishExam()
+                    });
+
+                    return;
+                } else {
+                    $outfocusedLimitTarget.text(remainingOutfocused);
+                }
+
+                remainingOutfocused--;
+            }
+
+            sendAction('outfocused');
+
+            {% if enable_time_limit %}
+                remainingTime = {{ time_limit }};
+
+                updateCountdown();
+
+                countdownInterval = window.setInterval(updateCountdown, 1000);
+            {% else %}
+                document.title = "{{ 'WindowTitleOutfocused'|get_plugin_lang('ExerciseFocusedPlugin')|escape('js') }}";
+            {% endif %}
+        }
+
+        function onFocus() {
+            sendAction('return');
+
+            document.title = initDocumentTitle;
+
+            window.setTimeout(
+                function () {
+                    $exerciseFocused.hide();
+                },
+                3500
+            );
+
+            {% if enable_time_limit %}
+                clearInterval(countdownInterval);
+            {% endif %}
+        }
+
+        $(window).on("blur", onBlur)
+        $(window).on("focus", onFocus)
+
+        $('body').on('click', 'a, button', function (e) {
+            var $el = $(e.target);
+
+            if (0 === $el.parents('form#exercise_form').length) {
+                e.preventDefault();
+            }
+        });
+    })
+</script>
+{% endif %}
--- a/plugin/exercisefocused/uninstall.php
+++ b/plugin/exercisefocused/uninstall.php
@ -0,0 +1,5 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+ExerciseFocusedPlugin::create()->uninstall();
--- a/plugin/exercisemonitoring/admin.php
+++ b/plugin/exercisemonitoring/admin.php
@ -0,0 +1,3 @@
+<?php
+
+/* For licensing terms, see /license.txt */
--- a/plugin/exercisemonitoring/assets/images/idcard.png
+++ b/plugin/exercisemonitoring/assets/images/idcard.png
--- a/plugin/exercisemonitoring/assets/images/user.png
+++ b/plugin/exercisemonitoring/assets/images/user.png
--- a/plugin/exercisemonitoring/cron/cleanup.php
+++ b/plugin/exercisemonitoring/cron/cleanup.php
@ -0,0 +1,97 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log;
+use Symfony\Component\Filesystem\Filesystem;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+if ('cli' !== PHP_SAPI) {
+    exit('For security reasons, this script can only be launched from cron or from the command line');
+}
+
+exit;
+
+$plugin = ExerciseMonitoringPlugin::create();
+$em = Database::getManager();
+$repo = $em->getRepository(Log::class);
+$trackExeRepo = $em->getRepository(TrackEExercises::class);
+
+$lifetimeDays = (int) $plugin->get(ExerciseMonitoringPlugin::SETTING_SNAPSHOTS_LIFETIME);
+
+if (empty($lifetimeDays)) {
+    logging("There is no set time limit");
+    exit;
+}
+
+$timeLimit = api_get_utc_datetime(null, false, true);
+$timeLimit->modify("-$lifetimeDays day");
+
+logging(
+    sprintf("Deleting snapshots taken before than %s", $timeLimit->format('Y-m-d H:i:s'))
+);
+
+$fs = new Filesystem();
+
+$logs = findLogsBeforeThan($timeLimit);
+
+foreach ($logs as $log) {
+    $sysPath = ExerciseMonitoringPlugin::generateSnapshotUrl(
+        $log['exe_user_id'],
+        $log['image_filename'],
+        SYS_UPLOAD_PATH
+    );
+
+    if (!file_exists($sysPath)) {
+        logging(
+            sprintf("File %s not exists", $sysPath)
+        );
+
+        continue;
+    }
+
+    $fs->remove($sysPath);
+
+    Database::update(
+        'plugin_exercisemonitoring_log',
+        ['removed' => true],
+        ['id = ?' => $log['log_id']]
+    );
+
+    logging(
+        sprintf(
+            "From exe_id %s; deleting filename %s created at %s",
+            $log['exe_id'],
+            $sysPath,
+            $log['created_at']
+        )
+    );
+}
+
+function findLogsBeforeThan(DateTime $timeLimit): array
+{
+    $sql = "SELECT tee.exe_id, l.id AS log_id, l.image_filename, tee.exe_user_id
+        FROM plugin_exercisemonitoring_log l
+        INNER JOIN chamilo.track_e_exercises tee on l.exe_id = tee.exe_id
+        WHERE l.created_at <= '".$timeLimit->format('Y-m-d H:i:s')."'
+            AND l.removed IS FALSE";
+
+    $result = Database::query($sql);
+
+    $rows = [];
+
+    while ($row = Database::fetch_assoc($result)) {
+        $rows[] = $row;
+    }
+
+    return $rows;
+}
+
+function logging(string $message)
+{
+    $time = time();
+
+    printf("[%s] %s \n", $time, $message);
+}
--- a/plugin/exercisemonitoring/index.php
+++ b/plugin/exercisemonitoring/index.php
@ -0,0 +1,61 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$plugin = ExerciseMonitoringPlugin::create();
+$em = Database::getManager();
+
+$isEnabled = $plugin->isEnabled(true);
+$showOverviewRegion = $isEnabled && strpos($_SERVER['SCRIPT_NAME'], '/main/exercise/overview.php') !== false;
+$showSubmitRegion = $isEnabled && strpos($_SERVER['SCRIPT_NAME'], '/main/exercise/exercise_submit.php') !== false;
+
+$_template['enabled'] = false;
+$_template['show_overview_region'] = $showOverviewRegion;
+$_template['show_submit_region'] = $showSubmitRegion;
+
+if ($showOverviewRegion || $showSubmitRegion) {
+    $exerciseId = (int) $_GET['exerciseId'];
+
+    $objFieldValue = new ExtraFieldValue('exercise');
+    $values = $objFieldValue->get_values_by_handler_and_field_variable(
+        $exerciseId,
+        ExerciseMonitoringPlugin::FIELD_SELECTED
+    );
+
+    $_template['enabled'] = $values && (bool) $values['value'];
+    $_template['exercise_id'] = $exerciseId;
+}
+
+$_template['enable_snapshots'] = true;
+
+$isAdult = $plugin->isAdult();
+
+if ($showOverviewRegion && $_template['enabled']) {
+    $_template['instructions'] = $plugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTIONS);
+
+    if ('true' === $plugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE)) {
+        $_template['instructions'] = $plugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTIONS_MINORS);
+
+        if ($isAdult) {
+            $_template['instructions'] = $plugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTIONS_ADULTS);
+        } else {
+            $_template['enable_snapshots'] = false;
+        }
+    }
+
+    $_template['instructions'] = Security::remove_XSS($_template['instructions']);
+}
+
+if ($showSubmitRegion && $_template['enabled']) {
+    $exercise = new Exercise(api_get_course_int_id());
+
+    if ($exercise->read($_template['exercise_id'])) {
+        $_template['exercise_type'] = (int) $exercise->selectType();
+
+        if ('true' === $plugin->get(ExerciseMonitoringPlugin::SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE)
+            && !$isAdult
+        ) {
+            $_template['enable_snapshots'] = false;
+        }
+    }
+}
--- a/plugin/exercisemonitoring/install.php
+++ b/plugin/exercisemonitoring/install.php
@ -0,0 +1,5 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+ExerciseMonitoringPlugin::create()->install();
--- a/plugin/exercisemonitoring/lang/english.php
+++ b/plugin/exercisemonitoring/lang/english.php
@ -0,0 +1,32 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = "Exercise monitoring";
+$strings['plugin_comment'] = "Random photo taking mechanism during an exercise";
+
+$strings['tool_enable'] = "Enable tool";
+$strings['intructions'] = 'Instructions';
+$strings['age_distinction_enable'] = 'Enable age distinction';
+$strings['legal_age'] = 'Legal age';
+$strings['extrafield_birtdate'] = 'Extra field for birthdate';
+$strings['extrafield_birtdate_help'] = 'The name of the field with which age will be calculated, e.g. <code>birthdate</code>';
+$strings['instructions_adults'] = 'Intructions for adults students';
+$strings['instructions_minors'] = 'Intrucctions for minors students';
+$strings['snapshots_lifetime'] = 'Life time of photos taken';
+$strings['snapshots_lifetime_help'] = 'Number of days that taken photos can remain stored on the server.<br>The cleanup script is located in <code>plugin/exercisemonitoring/cron/cleanup.php</code>';
+
+$strings['ExerciseMonitored'] = "Exercise monitored";
+$strings['Retry'] = "Retry";
+$strings['IdDocumentSnapshot'] = "Validated photo of the ID document";
+$strings['StudentSnapshot'] = "Validated photo of the student";
+
+$strings['ImageIdDocumentCameraInstructions'] = "Place your ID document in front of the camera and place it in the marked box. Click the <i>Capture</i> button or press the space bar on your keyboard.";
+$strings['ImageStudentCameraInstructions'] = "Place your face in front of the camera and place it within the marked circle. Click the <i>Capture</i> button or press the space bar on your keyboard";
+
+$strings['Snapshots'] = "Snapshots";
+
+$strings['ExerciseUnmonitored'] = "Exercise unmonitored";
+$strings['Birthdate'] = "Birthdate";
+$strings['AdultStudent'] = "Adult student";
+$strings['MinorStudent'] = "Minor student";
--- a/plugin/exercisemonitoring/lang/spanish.php
+++ b/plugin/exercisemonitoring/lang/spanish.php
@ -0,0 +1,32 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = "Monitoreo de Ejercicios";
+$strings['plugin_comment'] = "Mecanismo de toma de fotos aleatorias durante un ejercicio";
+
+$strings['tool_enable'] = "Enable tool";
+$strings['intructions'] = 'Intrucciones';
+$strings['age_distinction_enable'] = 'Habilitar distinción de edad';
+$strings['legal_age'] = 'Mayoría de edad';
+$strings['extrafield_birtdate'] = 'Campo extra para fecha de nacimiento';
+$strings['extrafield_birtdate_help'] = 'El nombre del campo con el cual se calculará la edad, por ejemplo <code>birthdate</code>';
+$strings['instructions_adults'] = 'Intrucciones para estudiantes adultos';
+$strings['instructions_minors'] = 'Intrucciones para estudiantes menores de edad';
+$strings['snapshots_lifetime'] = 'Tiempo de vida de las fotos tomadas';
+$strings['snapshots_lifetime_help'] = 'Cantidad de días que las fotos tomadas pueden permanecer almacenadas en el servidor.<br>El script de limpieza está ubicado en <code>plugin/exercisemonitoring/cron/cleanup.php</code>';
+
+$strings['ExerciseMonitored'] = "Ejercicio monitoreado";
+$strings['Retry'] = "Reintentar";
+$strings['IdDocumentSnapshot'] = "Foto validada del documento de identidad";
+$strings['StudentSnapshot'] = "Foto validada del estudiante";
+
+$strings['ImageIdDocumentCameraInstructions'] = "Coloca tu DNI o documento de identidad frente a la cámara y ubícalo en el recuadro marcado. Dale clic al botón <i>Capturar</i> o presiona la barra de espacio de tu teclado.";
+$strings['ImageStudentCameraInstructions'] = "Coloca tu rostro frente a la cámara y ubícalo dentro del círculo marcado. Dale click al botón <i>Capturar</i> o presiona la barra de espacio de tu teclado";
+
+$strings['Snapshots'] = "Fotos tomadas";
+
+$strings['ExerciseUnmonitored'] = "Ejercicio no monitoreado";
+$strings['Birthdate'] = "Fecha de nacimiento";
+$strings['AdultStudent'] = "Estudiante adulto";
+$strings['MinorStudent'] = "Estudiante menor de edad";
--- a/plugin/exercisemonitoring/pages/detail.php
+++ b/plugin/exercisemonitoring/pages/detail.php
@ -0,0 +1,32 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseMonitoring\Controller\DetailController;
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+if (!api_is_allowed_to_edit()) {
+    api_not_allowed(true);
+}
+
+$em = Database::getManager();
+$logRepository = $em->getRepository(Log::class);
+
+$detailController = new DetailController(
+    ExerciseMonitoringPlugin::create(),
+    HttpRequest::createFromGlobals(),
+    $em,
+    $logRepository
+);
+
+try {
+    $response = $detailController();
+} catch (Exception $e) {
+    $response = HttpResponse::create('', HttpResponse::HTTP_FORBIDDEN);
+}
+
+$response->send();
--- a/plugin/exercisemonitoring/pages/exercise_submit.ajax.php
+++ b/plugin/exercisemonitoring/pages/exercise_submit.ajax.php
@ -0,0 +1,18 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_course_script();
+
+$plugin = ExerciseMonitoringPlugin::create();
+$request = HttpRequest::createFromGlobals();
+$em = Database::getManager();
+
+$exerciseSubmitController = new ExerciseSubmitController($plugin, $request, $em);
+
+$response = $exerciseSubmitController();
+$response->send();
--- a/plugin/exercisemonitoring/pages/start.ajax.php
+++ b/plugin/exercisemonitoring/pages/start.ajax.php
@ -0,0 +1,18 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_course_script();
+
+$plugin = ExerciseMonitoringPlugin::create();
+$request = HttpRequest::createFromGlobals();
+$em = Database::getManager();
+
+$startController = new StartController($plugin, $request, $em);
+
+$response = $startController();
+$response->send();
--- a/plugin/exercisemonitoring/plugin.php
+++ b/plugin/exercisemonitoring/plugin.php
@ -0,0 +1,10 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+$plugin_info = ExerciseMonitoringPlugin::create()->get_info();
+
+$plugin_info['templates'] = [
+    'templates/modal.html.twig',
+    'templates/exercise_submit.html.twig',
+];
--- a/plugin/exercisemonitoring/src/Controller/DetailController.php
+++ b/plugin/exercisemonitoring/src/Controller/DetailController.php
@ -0,0 +1,111 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseMonitoring\Controller;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\PluginBundle\ExerciseFocused\Traits\DetailControllerTrait;
+use Display;
+use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityRepository;
+use Exception;
+use Exercise;
+use ExerciseMonitoringPlugin;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class DetailController
+{
+    use DetailControllerTrait;
+
+    /**
+     * @var ExerciseMonitoringPlugin
+     */
+    private $plugin;
+
+    /**
+     * @var HttpRequest
+     */
+    private $request;
+
+    /**
+     * @var EntityManager
+     */
+    private $em;
+
+    /**
+     * @var EntityRepository
+     */
+    private $logRepository;
+
+    public function __construct(
+        ExerciseMonitoringPlugin $plugin,
+        HttpRequest $request,
+        EntityManager $em,
+        EntityRepository $logRepository
+    ) {
+        $this->plugin = $plugin;
+        $this->request = $request;
+        $this->em = $em;
+        $this->logRepository = $logRepository;
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function __invoke(): HttpResponse
+    {
+        if (!$this->plugin->isEnabled(true)) {
+            throw new Exception();
+        }
+
+        $trackExe = $this->em->find(
+            TrackEExercises::class,
+            $this->request->query->getInt('id')
+        );
+
+        if (!$trackExe) {
+            throw new Exception();
+        }
+
+        $exercise = $this->em->find(CQuiz::class, $trackExe->getExeExoId());
+        $user = api_get_user_entity($trackExe->getExeUserId());
+
+        $objExercise = new Exercise($trackExe->getCId());
+        $objExercise->read($trackExe->getExeExoId());
+
+        $logs = $this->logRepository->findSnapshots($objExercise, $trackExe);
+
+        $content = $this->generateHeader($objExercise, $user, $trackExe)
+            .'<hr>'
+            .$this->generateSnapshotList($logs, $trackExe->getExeUserId());
+
+        return HttpResponse::create($content);
+    }
+
+    private function generateSnapshotList(array $logs, int $userId): string
+    {
+        $html = '';
+
+        foreach ($logs as $i => $log) {
+            $date = api_get_local_time($log['createdAt'], null, null, true, true, true);
+
+            $html .= '<div class="col-xs-12 col-sm-6 col-md-3" style="clear: '.($i % 4 === 0 ? 'both' : 'none').';">';
+            $html .= '<div class="thumbnail">';
+            $html .= Display::img(
+                ExerciseMonitoringPlugin::generateSnapshotUrl($userId, $log['imageFilename']),
+                $date
+            );
+            $html .= '<div class="caption">';
+            $html .= Display::tag('p', $date, ['class' => 'text-center']);
+            $html .= Display::tag('div', $log['log_level'], ['class' => 'text-center']);
+            $html .= '</div>';
+            $html .= '</div>';
+            $html .= '</div>';
+        }
+
+        return '<div class="row">'.$html.'</div>';
+    }
+}
--- a/plugin/exercisemonitoring/src/Controller/ExerciseSubmitController.php
+++ b/plugin/exercisemonitoring/src/Controller/ExerciseSubmitController.php
@ -0,0 +1,119 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\CourseBundle\Entity\CQuizQuestion;
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log;
+use Doctrine\ORM\EntityManager;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class ExerciseSubmitController
+{
+    private $plugin;
+    private $request;
+    private $em;
+
+    public function __construct(ExerciseMonitoringPlugin $plugin, HttpRequest $request, EntityManager $em)
+    {
+        $this->plugin = $plugin;
+        $this->request = $request;
+        $this->em = $em;
+    }
+
+    /**
+     * @throws \Doctrine\ORM\OptimisticLockException
+     * @throws \Doctrine\ORM\ORMException
+     * @throws \Doctrine\ORM\TransactionRequiredException
+     */
+    public function __invoke(): HttpResponse
+    {
+        $userDirName = $this->createDirectory();
+
+        $existingExeId = (int) ChamiloSession::read('exe_id');
+
+        $levelId = $this->request->request->getInt('level_id');
+        $exerciseId = $this->request->request->getInt('exercise_id');
+
+        $exercise = $this->em->find(CQuiz::class, $exerciseId);
+
+        $objExercise = new Exercise();
+        $objExercise->read($exerciseId);
+
+        $trackingExercise = $this->em->find(TrackEExercises::class, $existingExeId);
+
+        $newFilename = '';
+        $level = 0;
+
+        /** @var UploadedFile $imgSubmit */
+        if ($imgSubmit = $this->request->files->get('snapshot')) {
+            $newFilename = uniqid().'_submit.jpg';
+
+            $imgSubmit->move($userDirName, $newFilename);
+        }
+
+        if (ONE_PER_PAGE == $objExercise->selectType()) {
+            $question = $this->em->find(CQuizQuestion::class, $levelId);
+            $level = $question->getIid();
+        }
+
+        $log = new Log();
+        $log
+            ->setExercise($exercise)
+            ->setExe($trackingExercise)
+            ->setLevel($level)
+            ->setImageFilename($newFilename)
+        ;
+
+        $this->em->persist($log);
+
+        $this->updateOrphanSnapshots($exercise, $trackingExercise);
+
+        $this->em->flush();
+
+        return HttpResponse::create();
+    }
+
+    private function createDirectory(): string
+    {
+        $user = api_get_user_entity(api_get_user_id());
+
+        $pluginDirName = api_get_path(SYS_UPLOAD_PATH).'plugins/exercisemonitoring';
+        $userDirName = $pluginDirName.'/'.$user->getId();
+
+        $fs = new Filesystem();
+        $fs->mkdir(
+            [$pluginDirName, $userDirName],
+            api_get_permissions_for_new_directories()
+        );
+
+        return $userDirName;
+    }
+
+    private function updateOrphanSnapshots(CQuiz $exercise, TrackEExercises $trackingExe)
+    {
+        $repo = $this->em->getRepository(Log::class);
+
+        $fileNamesToUpdate = ChamiloSession::read($this->plugin->get_name().'_orphan_snapshots', []);
+
+        if (empty($fileNamesToUpdate)) {
+            return;
+        }
+
+        foreach ($fileNamesToUpdate as $filename) {
+            $log = $repo->findOneBy(['imageFilename' => $filename, 'exercise' => $exercise, 'exe' => null]);
+
+            if (!$log) {
+                continue;
+            }
+
+            $log->setExe($trackingExe);
+        }
+
+        ChamiloSession::erase($this->plugin->get_name().'_orphan_snapshots');
+    }
+}
--- a/plugin/exercisemonitoring/src/Controller/StartController.php
+++ b/plugin/exercisemonitoring/src/Controller/StartController.php
@ -0,0 +1,93 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log;
+use Doctrine\ORM\EntityManager;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+class StartController
+{
+    private $plugin;
+    private $request;
+    private $em;
+
+    public function __construct(ExerciseMonitoringPlugin $plugin, HttpRequest $request, EntityManager $em)
+    {
+        $this->plugin = $plugin;
+        $this->request = $request;
+        $this->em = $em;
+    }
+
+    public function __invoke(): HttpResponse
+    {
+        $userDirName = $this->createDirectory();
+
+        /** @var UploadedFile $imgIddoc */
+        $imgIddoc = $this->request->files->get('iddoc');
+        /** @var UploadedFile $imgLearner */
+        $imgLearner = $this->request->files->get('learner');
+
+        $exercise = $this->em->find(CQuiz::class, $this->request->request->getInt('exercise_id'));
+
+        $fileNamesToUpdate = [];
+
+        if ($imgIddoc) {
+            $newFilename = uniqid().'_iddoc.jpg';
+            $fileNamesToUpdate[] = $newFilename;
+
+            $imgIddoc->move($userDirName, $newFilename);
+
+            $log = new Log();
+            $log
+                ->setExercise($exercise)
+                ->setLevel(-1)
+                ->setImageFilename($newFilename)
+            ;
+
+            $this->em->persist($log);
+        }
+
+        if ($imgLearner) {
+            $newFilename = uniqid().'_learner.jpg';
+            $fileNamesToUpdate[] = $newFilename;
+
+            $imgLearner->move($userDirName, $newFilename);
+
+            $log = new Log();
+            $log
+                ->setExercise($exercise)
+                ->setLevel(-1)
+                ->setImageFilename($newFilename)
+            ;
+
+            $this->em->persist($log);
+        }
+
+        $this->em->flush();
+
+        ChamiloSession::write($this->plugin->get_name().'_orphan_snapshots', $fileNamesToUpdate);
+
+        return HttpResponse::create();
+    }
+
+    private function createDirectory(): string
+    {
+        $user = api_get_user_entity(api_get_user_id());
+
+        $pluginDirName = api_get_path(SYS_UPLOAD_PATH).'plugins/exercisemonitoring';
+        $userDirName = $pluginDirName.'/'.$user->getId();
+
+        $fs = new Filesystem();
+        $fs->mkdir(
+            [$pluginDirName, $userDirName],
+            api_get_permissions_for_new_directories()
+        );
+
+        return $userDirName;
+    }
+}
--- a/plugin/exercisemonitoring/src/Entity/Log.php
+++ b/plugin/exercisemonitoring/src/Entity/Log.php
@ -0,0 +1,133 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseMonitoring\Entity;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CoreBundle\Traits\TimestampableTypedEntity;
+use Chamilo\CourseBundle\Entity\CQuiz;
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * @ORM\Entity(repositoryClass="Chamilo\PluginBundle\ExerciseMonitoring\Repository\LogRepository")
+ * @ORM\Table(name="plugin_exercisemonitoring_log")
+ */
+class Log
+{
+    use TimestampableTypedEntity;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="id", type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     */
+    protected $id;
+
+    /**
+     * @var CQuiz
+     *
+     * @ORM\ManyToOne(targetEntity="Chamilo\CourseBundle\Entity\CQuiz")
+     * @ORM\JoinColumn(name="exercise_id", referencedColumnName="iid")
+     */
+    protected $exercise;
+
+    /**
+     * @var TrackEExercises
+     *
+     * @ORM\ManyToOne(targetEntity="Chamilo\CoreBundle\Entity\TrackEExercises")
+     * @ORM\JoinColumn(name="exe_id", referencedColumnName="exe_id")
+     */
+    private $exe;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="level", type="integer")
+     */
+    private $level;
+
+    /**
+     * @var string
+     *
+     * @ORM\Column(name="image_filename", type="string")
+     */
+    private $imageFilename;
+
+    /**
+     * @var bool
+     *
+     * @ORM\Column(name="removed", type="boolean", nullable=false, options={"default": false})
+     */
+    private $removed;
+
+    public function __construct()
+    {
+        $this->removed = false;
+    }
+
+    public function getId(): int
+    {
+        return $this->id;
+    }
+
+    public function getExercise(): CQuiz
+    {
+        return $this->exercise;
+    }
+
+    public function setExercise(CQuiz $exercise): Log
+    {
+        $this->exercise = $exercise;
+
+        return $this;
+    }
+
+    public function getExe(): ?TrackEExercises
+    {
+        return $this->exe;
+    }
+
+    public function setExe(?TrackEExercises $exe): Log
+    {
+        $this->exe = $exe;
+
+        return $this;
+    }
+
+    public function getLevel(): int
+    {
+        return $this->level;
+    }
+
+    public function setLevel(int $level): Log
+    {
+        $this->level = $level;
+
+        return $this;
+    }
+
+    public function getImageFilename(): string
+    {
+        return $this->imageFilename;
+    }
+
+    public function setImageFilename(string $imageFilename): Log
+    {
+        $this->imageFilename = $imageFilename;
+
+        return $this;
+    }
+
+    public function isRemoved(): bool
+    {
+        return $this->removed;
+    }
+
+    public function setRemoved(bool $removed): void
+    {
+        $this->removed = $removed;
+    }
+}
--- a/plugin/exercisemonitoring/src/ExerciseMonitoringPlugin.php
+++ b/plugin/exercisemonitoring/src/ExerciseMonitoringPlugin.php
@ -0,0 +1,185 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+use Chamilo\PluginBundle\ExerciseMonitoring\Entity\Log;
+use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\ORM\Tools\ToolsException;
+use Symfony\Component\Filesystem\Filesystem;
+
+class ExerciseMonitoringPlugin extends Plugin
+{
+    public const SETTING_TOOL_ENABLE = 'tool_enable';
+    public const SETTING_INSTRUCTIONS = 'intructions';
+    public const SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE = 'age_distinction_enable';
+    public const SETTING_INSTRUCTION_LEGAL_AGE = 'legal_age';
+    public const SETTING_EXTRAFIELD_BIRTHDATE = 'extrafield_birtdate';
+    public const SETTING_INSTRUCTIONS_ADULTS = 'instructions_adults';
+    public const SETTING_INSTRUCTIONS_MINORS = 'instructions_minors';
+    public const SETTING_SNAPSHOTS_LIFETIME = 'snapshots_lifetime';
+
+    public const FIELD_SELECTED = 'exercisemonitoring_selected';
+
+    private const TABLE_LOG = 'plugin_exercisemonitoring_log';
+
+    protected function __construct()
+    {
+        $version = '0.0.1';
+
+        $settings = [
+            self::SETTING_TOOL_ENABLE => 'boolean',
+            self::SETTING_INSTRUCTIONS => 'wysiwyg',
+            self::SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE => 'boolean',
+            self::SETTING_INSTRUCTION_LEGAL_AGE => 'text',
+            self::SETTING_EXTRAFIELD_BIRTHDATE => 'text',
+            self::SETTING_INSTRUCTIONS_ADULTS => 'wysiwyg',
+            self::SETTING_INSTRUCTIONS_MINORS => 'wysiwyg',
+            self::SETTING_SNAPSHOTS_LIFETIME => 'text',
+        ];
+
+        parent::__construct(
+            $version,
+            "Angel Fernando Quiroz Campos <angel.quiroz@beeznest.com>",
+            $settings
+        );
+    }
+
+    public static function create(): self
+    {
+        static $result = null;
+
+        return $result ?: $result = new self();
+    }
+
+    /**
+     * @throws ToolsException
+     */
+    public function install()
+    {
+        $em = Database::getManager();
+
+        if ($em->getConnection()->getSchemaManager()->tablesExist([self::TABLE_LOG])) {
+            return;
+        }
+
+        $schemaTool = new SchemaTool($em);
+        $schemaTool->createSchema(
+            [
+                $em->getClassMetadata(Log::class),
+            ]
+        );
+
+        $pluginDirName = api_get_path(SYS_UPLOAD_PATH).'plugins/exercisemonitoring';
+
+        $fs = new Filesystem();
+        $fs->mkdir(
+            $pluginDirName,
+            api_get_permissions_for_new_directories()
+        );
+
+        $objField = new ExtraField('exercise');
+        $objField->save([
+            'variable' => self::FIELD_SELECTED,
+            'field_type' => ExtraField::FIELD_TYPE_CHECKBOX,
+            'display_text' => $this->get_title(),
+            'visible_to_self' => true,
+            'changeable' => true,
+            'filter' => false,
+        ]);
+    }
+
+    public function uninstall()
+    {
+        $em = Database::getManager();
+
+        if (!$em->getConnection()->getSchemaManager()->tablesExist([self::TABLE_LOG])) {
+            return;
+        }
+
+        $schemaTool = new SchemaTool($em);
+        $schemaTool->dropSchema(
+            [
+                $em->getClassMetadata(Log::class),
+            ]
+        );
+
+        $objField = new ExtraField('exercise');
+        $extraFieldInfo = $objField->get_handler_field_info_by_field_variable(self::FIELD_SELECTED);
+
+        if ($extraFieldInfo) {
+            $objField->delete($extraFieldInfo['id']);
+        }
+    }
+
+    public function getAdminUrl(): string
+    {
+        $name = $this->get_name();
+        $webPath = api_get_path(WEB_PLUGIN_PATH).$name;
+
+        return "$webPath/admin.php";
+    }
+
+    public function generateDetailLink(int $exeId, int $userId): string
+    {
+        $title = $this->get_lang('ExerciseMonitored');
+        $webcamIcon = Display::return_icon('webcam.png', $title);
+        $webcamNaIcon = Display::return_icon('webcam_na.png', $this->get_lang('ExerciseUnmonitored'));
+
+        $monitoringDetailUrl = api_get_path(WEB_PLUGIN_PATH).'exercisemonitoring/pages/detail.php?'.api_get_cidreq()
+            .'&'.http_build_query(['id' => $exeId]);
+
+        $url = Display::url(
+            $webcamIcon,
+            $monitoringDetailUrl,
+            [
+                'class' => 'ajax',
+                'data-title' => $title,
+                'data-size' => 'lg',
+            ]
+        );
+
+        $showLink = true;
+
+        if ('true' === $this->get(self::SETTING_INSTRUCTION_AGE_DISTINCTION_ENABLE) && !$this->isAdult($userId)) {
+            $showLink = false;
+        }
+
+        return $showLink ? $url : $webcamNaIcon;
+    }
+
+    public static function generateSnapshotUrl(
+        int $userId,
+        string $imageFileName,
+        string $path = WEB_UPLOAD_PATH
+    ): string {
+        $pluginDirName = api_get_path($path).'plugins/exercisemonitoring';
+
+        return $pluginDirName.'/'.$userId.'/'.$imageFileName;
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function isAdult(int $userId = 0): bool
+    {
+        $userId = $userId ?: api_get_user_id();
+        $fieldVariable = $this->get(self::SETTING_EXTRAFIELD_BIRTHDATE);
+        $legalAge = (int) $this->get(self::SETTING_INSTRUCTION_LEGAL_AGE);
+
+        $value = UserManager::get_extra_user_data_by_field($userId, $fieldVariable);
+
+        if (empty($value)) {
+            return false;
+        }
+
+        if (empty($value[$fieldVariable])) {
+            return false;
+        }
+
+        $birthdate = new DateTime($value[$fieldVariable]);
+        $now = new DateTime();
+        $diff = $birthdate->diff($now);
+
+        return !$diff->invert && $diff->y >= $legalAge;
+    }
+}
--- a/plugin/exercisemonitoring/src/Repository/LogRepository.php
+++ b/plugin/exercisemonitoring/src/Repository/LogRepository.php
@ -0,0 +1,47 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\PluginBundle\ExerciseMonitoring\Repository;
+
+use Chamilo\CoreBundle\Entity\TrackEExercises;
+use Chamilo\CourseBundle\Entity\CQuizQuestion;
+use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\Query\Expr\Join;
+use Exercise;
+
+class LogRepository extends EntityRepository
+{
+    public function findByLevelAndExe(int $level, TrackEExercises $exe): array
+    {
+        return $this->findBy(
+            [
+                'level' => $level,
+                'exe' => $exe,
+            ],
+            ['createdAt' => 'ASC']
+        );
+    }
+
+    public function findSnapshots(Exercise $objExercise, TrackEExercises $trackExe)
+    {
+        $qb = $this->createQueryBuilder('l');
+
+        $qb->select(['l.imageFilename', 'l.createdAt']);
+
+        if (ONE_PER_PAGE == $objExercise->selectType()) {
+            $qb
+                ->addSelect(['qq.question AS log_level'])
+                ->leftJoin(CQuizQuestion::class, 'qq', Join::WITH, 'l.level = qq.iid');
+        }
+
+        $query = $qb
+            ->andWhere(
+                $qb->expr()->eq('l.exe', $trackExe->getExeId())
+            )
+            ->addOrderBy('l.createdAt')
+            ->getQuery();
+
+        return $query->getResult();
+    }
+}
--- a/plugin/exercisemonitoring/templates/exercise_submit.html.twig
+++ b/plugin/exercisemonitoring/templates/exercise_submit.html.twig
@ -0,0 +1,84 @@
+{% if exercisemonitoring.show_submit_region and exercisemonitoring.enabled and exercisemonitoring.enable_snapshots %}
+    {% set ALL_ON_ONE_PAGE = exercisemonitoring.exercise_type == 1 %}
+    {% set ONE_PER_PAGE = exercisemonitoring.exercise_type == 2 %}
+
+    <div id="monitoring-camera"></div>
+
+    <script src="{{ _p.web }}web/assets/webcamjs/webcam.js"></script>
+    <script>
+        $(function () {
+            var $btnSaveNow = $('button[name="save_now"]');
+            var $btnEndTest = $('button[name="validate_all"]');
+
+            Webcam.set({
+                height: 480,
+                width: 640,
+            });
+            Webcam.attach('#monitoring-camera');
+            Webcam.on('live', function () {
+                {% if ALL_ON_ONE_PAGE %}
+                    snapAndSendData(0);
+                {% elseif ONE_PER_PAGE %}
+                    snapByQuestion();
+                {% endif %}
+            });
+
+            {% if ALL_ON_ONE_PAGE %}
+                $btnEndTest.on('click', function () {
+                    snapAndSendData(0);
+                });
+            {% elseif ONE_PER_PAGE %}
+                $btnSaveNow.on('click', function () {
+                    snapByQuestion();
+                });
+            {% endif %}
+
+            function snapAndSendData(levelId) {
+                Webcam.snap(function (dataUri) {
+                    sendData(levelId, dataUri);
+                });
+            }
+
+            function snapByQuestion() {
+                var questionId = $btnSaveNow.data('question') || 0;
+
+                snapAndSendData(questionId);
+            }
+
+            function sendData(questionId, imageUri) {
+                var rawImgIdDoc = imageUri.replace(/^data:image\/\w+;base64,/, '');
+                var blobImgIdDoc = new Blob( [ Webcam.base64DecToArr(rawImgIdDoc) ], {type: 'image/jpeg'} );
+
+                var formData = new FormData();
+                formData.append('exercise_id', '{{ exercisemonitoring.exercise_id }}');
+                formData.append('level_id', questionId);
+                formData.append('snapshot', blobImgIdDoc, 'snapshot.jpg');
+
+                return $.ajax({
+                    url: '{{ _p.web_plugin }}exercisemonitoring/pages/exercise_submit.ajax.php',
+                    type: 'POST',
+                    data: formData,
+                    processData: false,
+                    contentType: false,
+                });
+            }
+        });
+    </script>
+    <style>
+        #plugin_pre_footer {
+            position: relative;
+        }
+        #monitoring-camera {
+            bottom: 15px;
+            right: 15px;
+            max-width: 108px;
+            max-height: 81px;
+            position: fixed;
+            z-index: 1015;
+        }
+        #monitoring-camera video {
+            max-width: 108px;
+            max-height: 81px;
+        }
+    </style>
+{% endif %}
--- a/plugin/exercisemonitoring/templates/modal.html.twig
+++ b/plugin/exercisemonitoring/templates/modal.html.twig
@ -0,0 +1,314 @@
+{% if exercisemonitoring.show_overview_region and exercisemonitoring.enabled %}
+    {% if exercisemonitoring.enable_snapshots %}
+        <div id="em-modal-start" class="modal fade in" tabindex="-1" role="dialog" data-backdrop="static" data-keyboard="false">
+            <div class="modal-dialog" role="document">
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h4 class="modal-title">{{ 'ExerciseMonitored'|get_plugin_lang('ExerciseMonitoringPlugin') }}</h4>
+                    </div>
+
+                    <div class="modal-body" id="em-terms-body">
+                        {{ exercisemonitoring.instructions }}
+                    </div>
+
+                    <div class="modal-body text-center" id="em-camera-body" style="display: none;">
+                        <p id="txt-iddoc-img-instructions" class="lead" style="display: block;">
+                            {{ 'ImageIdDocumentCameraInstructions'|get_plugin_lang('ExerciseMonitoringPlugin') }}
+                        </p>
+                        <p id="txt-learner-img-instructions" class="lead" style="display: none;">
+                            {{ 'ImageStudentCameraInstructions'|get_plugin_lang('ExerciseMonitoringPlugin') }}
+                        </p>
+                        <div style="position: relative">
+                            <div id="monitoring-camera" class="embed-responsive embed-responsive-4by3"></div>
+                            <img id="img-iddoc-placeholder" style="display: block;" src="{{ _p.web_plugin }}exercisemonitoring/assets/images/idcard.png">
+                            <img id="img-learner-placeholder" style="display: none" src="{{ _p.web_plugin }}exercisemonitoring/assets/images/user.png">
+                        </div>
+                        <br>
+                        <button class="btn btn-default" type="button" id="btn-snap" disabled>
+                            <span class="fa fa-camera" aria-hidden="true"></span>
+                            {{ 'Snapshot'|get_lang }}
+                        </button>
+                    </div>
+
+                    <div class="modal-body text-center" id="em-iddoc-body" style="display: none;">
+                        <p class="lead">{{ 'IdDocumentSnapshot'|get_plugin_lang('ExerciseMonitoringPlugin') }}</p>
+                        <div id="img-iddoc"></div>
+                    </div>
+
+                    <div class="modal-body text-center" id="em-student-body" style="display: none;">
+                        <p class="lead">{{ 'StudentSnapshot'|get_plugin_lang('ExerciseMonitoringPlugin') }}</p>
+                        <div id="img-learner"></div>
+                    </div>
+
+                    <div id="em-terms-footer" class="modal-footer">
+                        <button type="button" class="btn btn-primary" id="btn-accept">
+                            <span class="fa fa-check" aria-hidden="true"></span> {{ 'Accept'|get_lang }}
+                        </button>
+                    </div>
+
+                    <div id="em-camera-footer" class="modal-footer" style="display: none;">
+                        <button class="btn btn-default" type="button" id="btn-retry" disabled>
+                            <span class="fa fa-refresh" aria-hidden="true"></span>
+                            {{ 'Retry'|get_plugin_lang('ExerciseMonitoringPlugin') }}
+                        </button>
+                        <button class="btn btn-primary" type="button" id="btn-next" disabled>
+                            <span class="fa fa-forward" aria-hidden="true"></span> {{ 'Next'|get_lang }}
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <script src="{{ _p.web }}web/assets/webcamjs/webcam.js"></script>
+        <script>
+            $(function () {
+                var $btnStartExercise = $('.exercise_overview_options a');
+                var $bodyTerms = $('#em-terms-body');
+                var $bodyCamera = $('#em-camera-body');
+                var $bodyIdDoc = $('#em-iddoc-body');
+                var $bodyStudent = $('#em-student-body');
+
+                var $footTerms = $('#em-terms-footer');
+                var $footCamera = $('#em-camera-footer');
+
+                var $btnSnap = $('#btn-snap');
+                var $btnRetry = $('#btn-retry');
+                var $btnNext = $('#btn-next');
+
+                var $imgIdDoc = $('#img-iddoc');
+                var $imgLearner = $('#img-learner');
+
+                var $txtIdDocInstructions = $('#txt-iddoc-img-instructions');
+                var $txtLearnerInstructions = $('#txt-learner-img-instructions');
+                var $imgIdDocPlaceholder = $('#img-iddoc-placeholder');
+                var $imgLearnerPlaceholder = $('#img-learner-placeholder');
+
+                var hasIdDoc = false;
+                var hasLearner = false;
+
+                var imgIdDoc = null;
+                var imgLearner = null;
+
+                if ($btnStartExercise.length > 0) {
+                    $("#em-modal-start").modal("show");
+                }
+
+                $btnStartExercise.addClass('disabled').attr('aria-disabled', 'true');
+
+                $("#btn-accept").on('click', function (e) {
+                    e.preventDefault();
+
+                    $bodyTerms.hide();
+                    $footTerms.hide();
+
+                    $bodyCamera.show();
+                    $footCamera.show();
+
+                    Webcam.set({
+                        height: 480,
+                        width: 640,
+                    });
+                    Webcam.attach('#monitoring-camera');
+                    Webcam.on('live', function () {
+                        $txtIdDocInstructions.show();
+                        $imgIdDocPlaceholder.show();
+                        $txtLearnerInstructions.hide();
+                        $imgLearnerPlaceholder.hide();
+
+                        $btnSnap.prop({disabled: false}).focus();
+                        $('#monitoring-camera video').addClass('embed-responsive-item');
+                    });
+                });
+
+                $btnSnap.on('click', function (e) {
+                    e.preventDefault();
+
+                    $btnSnap.prop({disabled: true});
+                    $btnRetry.prop({disabled: true});
+                    $btnNext.prop({disabled: true});
+
+                    snap()
+                        .done(function () {
+                            $btnRetry.prop({disabled: false});
+                            $btnNext.prop({disabled: false});
+                        });
+                });
+
+                $btnRetry.on('click', function (e) {
+                    e.preventDefault();
+
+                    $btnSnap.prop({disabled: false}).focus();
+                    $btnRetry.prop({disabled: true});
+                    $btnNext.prop({disabled: true});
+
+                    if (hasIdDoc && !hasLearner) {
+                        $bodyCamera.show();
+                        $bodyIdDoc.hide();
+
+                        hasIdDoc = false;
+                        hasLearner = false;
+                    } else if (hasIdDoc && hasLearner) {
+                        $bodyCamera.show();
+                        $bodyStudent.hide();
+
+                        hasIdDoc = true;
+                        hasLearner = false;
+                    }
+                });
+
+                $btnNext.on('click', function (e) {
+                    e.preventDefault();
+
+                    $btnRetry.prop({disabled: true});
+
+                    if (hasIdDoc && !hasLearner) {
+                        $bodyIdDoc.hide();
+                        $bodyCamera.show();
+
+                        $txtIdDocInstructions.hide();
+                        $imgIdDocPlaceholder.hide();
+                        $txtLearnerInstructions.show();
+                        $imgLearnerPlaceholder.show();
+
+                        $btnSnap.prop({disabled: false}).focus();
+                    } else if (hasIdDoc && hasLearner) {
+                        $btnNext.prop({disabled: true});
+                        $btnSnap.prop({disabled: true});
+
+                        Webcam.reset();
+
+                        sendData().done(function () {
+                            $btnStartExercise.removeClass('disabled').removeAttr('aria-disabled');
+
+                            window.location = $btnStartExercise.prop('href');
+
+                            $("#em-modal-start").modal('hide');
+                        });
+                    }
+                });
+
+                $(window).on('keyup', function (e) {
+                    if (32 === event.which && !$btnSnap.prop('disabled')) {
+                        e.preventDefault();
+
+                        $btnSnap.trigger('click');
+                    }
+                });
+
+                function snap() {
+                    var deferred = $.Deferred();
+
+                    Webcam.snap(function (dataUri) {
+                        var $imgSnapshot = $('<img>')
+                            .prop({src: dataUri, id: 'img-snapshot'})
+                            .addClass('img-responsive');
+
+                        if (!hasIdDoc && !hasLearner) {
+                            $imgIdDoc.html($imgSnapshot);
+
+                            $bodyCamera.hide();
+                            $bodyIdDoc.show();
+
+                            hasIdDoc = true;
+                            hasLearner = false;
+
+                            imgIdDoc = dataUri;
+                        } else if (hasIdDoc && !hasLearner) {
+                            $imgLearner.html($imgSnapshot);
+
+                            $bodyCamera.hide();
+                            $bodyStudent.show();
+
+                            hasIdDoc = true;
+                            hasLearner = true;
+
+                            imgLearner = dataUri;
+                        }
+
+                        deferred.resolve();
+                    });
+
+                    return deferred.promise();
+                }
+
+                function sendData() {
+                    var rawImgIdDoc = imgIdDoc.replace(/^data:image\/\w+;base64,/, '');
+                    var blobImgIdDoc = new Blob( [ Webcam.base64DecToArr(rawImgIdDoc) ], {type: 'image/jpeg'} );
+
+                    var rawImgLearner = imgLearner.replace(/^data:image\/\w+;base64,/, '');
+                    var blobImgLearner = new Blob( [ Webcam.base64DecToArr(rawImgLearner) ], {type: 'image/jpeg'} );
+
+                    var formData = new FormData();
+                    formData.append('iddoc', blobImgIdDoc, 'iddoc.jpg');
+                    formData.append('learner', blobImgLearner, 'learner.jpg');
+                    formData.append('exercise_id', '{{ exercisemonitoring.exercise_id }}');
+
+                    return $.ajax({
+                        url: '{{ _p.web_plugin }}exercisemonitoring/pages/start.ajax.php',
+                        type: 'POST',
+                        data: formData,
+                        processData: false,
+                        contentType: false,
+                    });
+                }
+            });
+        </script>
+        <style>
+            #monitoring-camera {
+                height: auto !important;
+                max-width: 100% !important;
+                margin: 0 auto;
+            }
+
+            #em-camera-body img#img-iddoc-placeholder,
+            #em-camera-body img#img-learner-placeholder {
+                height: auto;
+                left: 0;
+                position: absolute;
+                top: 0;
+                width: 100%;
+            }
+
+            #monitoring-camera video {
+                height: auto !important;
+                max-width: 100%;
+            }
+        </style>
+    {% else %}
+        <div id="em-modal-start" class="modal fade in" tabindex="1" role="dialog" data-backdrop="static" data-keyboard="false" data-show="true">
+            <div class="modal-dialog" role="document">
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h4 class="modal-title">{{ 'ExerciseMonitored'|get_plugin_lang('ExerciseMonitoringPlugin') }}</h4>
+                    </div>
+
+                    <div class="modal-body" id="em-terms-body">
+                        {{ exercisemonitoring.instructions }}
+                    </div>
+
+                    <div id="em-terms-footer" class="modal-footer">
+                        <button type="button" class="btn btn-primary" data-dismiss="modal">
+                            <span class="fa fa-check" aria-hidden="true"></span> {{ 'Accept'|get_lang }}
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <script>
+            $(function () {
+                var $modal = $("#em-modal-start");
+                var $btnStartExercise = $('.exercise_overview_options a');
+
+                if ($btnStartExercise.length > 0) {
+                    $modal.modal("show");
+                }
+
+                $modal.on('hidden.bs.modal', function (e) {
+                    $btnStartExercise.removeClass('disabled').removeAttr('aria-disabled');
+
+                    window.location = $btnStartExercise.prop('href');
+                });
+            });
+        </script>
+    {% endif %}
+{% endif %}
--- a/plugin/exercisemonitoring/uninstall.php
+++ b/plugin/exercisemonitoring/uninstall.php
@ -0,0 +1,5 @@
+<?php
+
+/* For licensing terms, see /license.txt */
+
+ExerciseMonitoringPlugin::create()->uninstall();