<?php
/* For licensing terms, see /license.txt */

use ChamiloSession as Session;

/**
 * @package chamilo.survey
 *
 * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University:
 * cleanup, refactoring and rewriting large parts of the code
 * @author Julio Montoya
 */
require_once __DIR__.'/../inc/global.inc.php';

$this_section = SECTION_COURSES;
$current_course_tool = TOOL_SURVEY;

api_protect_course_script(true);

/** @todo this has to be moved to a more appropriate place (after the display_header of the code)*/
// Coach can't view this page
$extend_rights_for_coachs = api_get_setting('extend_rights_for_coach_on_survey');
$isDrhOfCourse = CourseManager::isUserSubscribedInCourseAsDrh(
    api_get_user_id(),
    api_get_course_info()
);

if ($isDrhOfCourse) {
    header('Location: '.api_get_path(WEB_CODE_PATH).'survey/survey_list.php?'.api_get_cidreq());
    exit;
}
if (!api_is_allowed_to_edit(false, true) ||
    (api_is_session_general_coach() && $extend_rights_for_coachs == 'false')
) {
    api_not_allowed(true);
    exit;
}

// Database table definitions
$table_survey = Database::get_course_table(TABLE_SURVEY);
$table_survey_question = Database::get_course_table(TABLE_SURVEY_QUESTION);
$table_survey_question_option = Database::get_course_table(TABLE_SURVEY_QUESTION_OPTION);
$table_survey_question_group = Database::get_course_table(TABLE_SURVEY_QUESTION_GROUP);
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
$table_user = Database::get_main_table(TABLE_MAIN_USER);

$survey_id = (int) $_GET['survey_id'];
$course_id = api_get_course_int_id();
$action = isset($_GET['action']) ? $_GET['action'] : null;

// Breadcrumbs
$interbreadcrumb[] = [
    'url' => api_get_path(WEB_CODE_PATH).'survey/survey_list.php',
    'name' => get_lang('SurveyList'),
];

// Getting the survey information
if (!empty($_GET['survey_id'])) {
    $course_code = api_get_course_id();
    if ($course_code != -1) {
        $survey_data = SurveyManager::get_survey($survey_id);
    } else {
        api_not_allowed(true);
    }
} else {
    api_not_allowed(true);
}

$tool_name = strip_tags($survey_data['title']);
$is_survey_type_1 = $survey_data['survey_type'] == 1;

if (api_strlen(strip_tags($survey_data['title'])) > 40) {
    $tool_name .= '...';
}

if ($is_survey_type_1 && ($action == 'addgroup' || $action == 'deletegroup')) {
    $_POST['name'] = trim($_POST['name']);
    if ($action == 'addgroup') {
        if (!empty($_POST['group_id'])) {
            Database::query('UPDATE '.$table_survey_question_group.' SET description = \''.Database::escape_string($_POST['description']).'\'
                             WHERE c_id = '.$course_id.' AND id = \''.Database::escape_string($_POST['group_id']).'\'');
            $sendmsg = 'GroupUpdatedSuccessfully';
        } elseif (!empty($_POST['name'])) {
            Database::query('INSERT INTO '.$table_survey_question_group.' (c_id, name,description,survey_id) values ('.$course_id.', \''.Database::escape_string($_POST['name']).'\',\''.Database::escape_string($_POST['description']).'\',\''.Database::escape_string($survey_id).'\') ');
            $sendmsg = 'GroupCreatedSuccessfully';
        } else {
            $sendmsg = 'GroupNeedName';
        }
    }

    if ($action == 'deletegroup') {
        $sql = 'DELETE FROM '.$table_survey_question_group.' 
                WHERE c_id = '.$course_id.' AND id = '.intval($_GET['gid']).' AND survey_id = '.intval($survey_id);
        Database::query($sql);
        $sendmsg = 'GroupDeletedSuccessfully';
    }
    header('Location: '.api_get_path(WEB_CODE_PATH).'survey/survey.php?survey_id='.$survey_id.'&sendmsg='.$sendmsg);
    exit;
}

// Displaying the header
Display::display_header($tool_name, 'Survey');

// Action handling
$my_action_survey = Security::remove_XSS($action);
$my_question_id_survey = isset($_GET['question_id']) ? Security::remove_XSS($_GET['question_id']) : null;
$my_survey_id_survey = Security::remove_XSS($_GET['survey_id']);
$message_information = isset($_GET['message']) ? Security::remove_XSS($_GET['message']) : null;

if (isset($action)) {
    if (($action == 'moveup' || $action == 'movedown') && isset($_GET['question_id'])) {
        SurveyManager::move_survey_question(
            $my_action_survey,
            $my_question_id_survey,
            $my_survey_id_survey
        );
        echo Display::return_message(get_lang('SurveyQuestionMoved'), 'confirmation');
    }
    if ($action == 'delete' && is_numeric($_GET['question_id'])) {
        SurveyManager::delete_survey_question(
            $my_survey_id_survey,
            $my_question_id_survey,
            $survey_data['is_shared']
        );
    }
}

if (!empty($survey_data['survey_version'])) {
    echo '<b>'.get_lang('Version').': '.$survey_data['survey_version'].'</b>';
}

// We exit here is the first or last question is a pagebreak (which causes errors)
SurveyUtil::check_first_last_question($_GET['survey_id']);

// Action links
$survey_actions = '';
if ($survey_data['survey_type'] != 3) {
    $survey_actions = '<a href="'.api_get_path(WEB_CODE_PATH).'survey/create_new_survey.php?'.api_get_cidreq(
        ).'&action=edit&survey_id='.$survey_id.'">'.
        Display::return_icon('edit.png', get_lang('EditSurvey'), '', ICON_SIZE_MEDIUM).'</a>';
}
$survey_actions .= '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey_list.php?'.api_get_cidreq().'&action=delete&survey_id='.$survey_id.'" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('DeleteSurvey').'?', ENT_QUOTES)).'\')) return false;">'.
    Display::return_icon('delete.png', get_lang('DeleteSurvey'), '', ICON_SIZE_MEDIUM).'</a>';

if ($survey_data['survey_type'] != 3) {
    $survey_actions .= '<a href="'.api_get_path(WEB_CODE_PATH).'survey/preview.php?'.api_get_cidreq().'&survey_id='.$survey_id.'">'.
        Display::return_icon('preview_view.png', get_lang('Preview'), '', ICON_SIZE_MEDIUM).'</a>';
}

$survey_actions .= '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey_invite.php?'.api_get_cidreq().'&survey_id='.$survey_id.'">'.
    Display::return_icon('mail_send.png', get_lang('Publish'), '', ICON_SIZE_MEDIUM).'</a>';

if ($survey_data['survey_type'] != 3) {
    if (!api_get_configuration_value('hide_survey_reporting_button')) {
        $survey_actions .= Display::url(
            Display::return_icon('statistics.png', get_lang('Reporting'), [], ICON_SIZE_MEDIUM),
            api_get_path(WEB_CODE_PATH).'survey/reporting.php?'.api_get_cidreq().'&survey_id='.$survey_id
        );
    }
}

$survey_actions .= SurveyUtil::getAdditionalTeacherActions($survey_id, ICON_SIZE_MEDIUM);

echo '<div class="actions">'.$survey_actions.'</div>';

$urlQuestion = api_get_path(WEB_CODE_PATH).'survey/question.php?'.api_get_cidreq().'&action=add';
if ($survey_data['survey_type'] == 0) {
    echo '<div class="well">';
    echo Display::url(
        Display::return_icon('yesno.png', get_lang('YesNo'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=yesno&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('mcua.png', get_lang('UniqueSelect'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=multiplechoice&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('mcma.png', get_lang('MultipleResponse'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=multipleresponse&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('open_answer.png', get_lang('Open'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=open&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('dropdown.png', get_lang('Dropdown'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=dropdown&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('percentagequestion.png', get_lang('Percentage'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=percentage&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('scorequestion.png', get_lang('Score'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=score&survey_id='.$survey_id
    );
    echo Display::url(
        Display::return_icon('commentquestion.png', get_lang('Comment'), null, ICON_SIZE_BIG),
        $urlQuestion.'&type=comment&survey_id='.$survey_id
    );

    if ($survey_data['one_question_per_page'] == 0) {
        echo Display::url(
            Display::return_icon('page_end.png', get_lang('Pagebreak'), null, ICON_SIZE_BIG),
            $urlQuestion.'&type=pagebreak&survey_id='.$survey_id
        );
    }
    echo '</div>';
} else {
    if ($survey_data['survey_type'] != 3) {
        echo '<div class="well">';
        echo Display::url(
            Display::return_icon('yesno.png', get_lang('YesNo'), null, ICON_SIZE_BIG),
            $urlQuestion.'&type=personality&survey_id='.$survey_id
        );
        echo '</a></div>';
    }
}

// Displaying the table header with all the questions
echo '<table class="table table-bordered">';
echo '<thead>';
echo '<tr>';
echo '		<th width="5%">'.get_lang('NumberAbbreviation').'</th>';
echo '		<th width="50%">'.get_lang('Title').'</th>';
echo '		<th width="15%">'.get_lang('Type').'</th>';
echo '		<th width="15%" >'.get_lang('NumberOfOptions').'</th>';
echo '		<th width="15%">'.get_lang('Modify').'</th>';
if ($is_survey_type_1) {
    echo '<th width="100">'.get_lang('Condition').'</th>';
    echo '<th width="40">'.get_lang('Group').'</th>';
}
echo '	</tr>';
echo '</thead>';

// Displaying the table contents with all the questions
$question_counter = 1;
$sql = "SELECT * FROM $table_survey_question_group
        WHERE c_id = $course_id AND survey_id = $survey_id 
        ORDER BY id";
$result = Database::query($sql);
$groups = [];
while ($row = Database::fetch_array($result)) {
    $groups[$row['id']] = $row['name'];
}
$sql = "SELECT survey_question.*, count(survey_question_option.question_option_id) as number_of_options
        FROM $table_survey_question survey_question
        LEFT JOIN $table_survey_question_option survey_question_option
        ON 
            survey_question.question_id = survey_question_option.question_id AND 
            survey_question_option.c_id = $course_id
        WHERE
            survey_question.survey_id 	= ".intval($survey_id)." AND
            survey_question.c_id 		= $course_id
        GROUP BY survey_question.question_id
        ORDER BY survey_question.sort ASC";

$result = Database::query($sql);
$question_counter_max = Database::num_rows($result);
while ($row = Database::fetch_array($result, 'ASSOC')) {
    echo '<tr>';
    echo '	<td>'.$question_counter.'</td>';
    echo '	<td>';

    if ($survey_data['survey_type'] != 3) {
        if (api_strlen($row['survey_question']) > 100) {
            echo api_substr(strip_tags($row['survey_question']), 0, 100).' ... ';
        } else {
            echo $row['survey_question'];
        }
    } else {
        $parts = explode('@@', $row['survey_question']);
        echo api_get_local_time($parts[0]).' - '.api_get_local_time($parts[1]);
    }

    if ($row['type'] == 'yesno') {
        $tool_name = get_lang('YesNo');
    } elseif ($row['type'] == 'multiplechoice') {
        $tool_name = get_lang('UniqueSelect');
    } else {
        $tool_name = get_lang(api_ucfirst(Security::remove_XSS($row['type'])));
    }

    echo '</td>';
    echo '<td>'.$tool_name.'</td>';
    echo '<td>'.$row['number_of_options'].'</td>';
    echo '<td>';
    if ($survey_data['survey_type'] != 3) {
        echo '<a href="'.api_get_path(WEB_CODE_PATH).'survey/question.php?'.api_get_cidreq().'&action=edit&type='.$row['type'].'&survey_id='.$survey_id.'&question_id='.$row['question_id'].'">'.
            Display::return_icon('edit.png', get_lang('Edit'), '', ICON_SIZE_SMALL).'</a>';
    }

    echo '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?'.api_get_cidreq().'&action=delete&survey_id='.$survey_id.'&question_id='.$row['question_id'].'" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang("DeleteSurveyQuestion").'?', ENT_QUOTES, $charset)).'\')) return false;">'.
        Display::return_icon('delete.png', get_lang('Delete'), '', ICON_SIZE_SMALL).'</a>';
    if ($survey_data['survey_type'] != 3) {
        if ($question_counter > 1) {
            echo '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?'.api_get_cidreq(
                ).'&action=moveup&survey_id='.$survey_id.'&question_id='.$row['question_id'].'">'.
                Display::return_icon('up.png', get_lang('MoveUp'), '', ICON_SIZE_SMALL).'</a>';
        } else {
            Display::display_icon('up_na.png', '&nbsp;', '', ICON_SIZE_SMALL);
        }
        if ($question_counter < $question_counter_max) {
            echo '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?'.api_get_cidreq(
                ).'&action=movedown&survey_id='.$survey_id.'&question_id='.$row['question_id'].'">'.
                Display::return_icon('down.png', get_lang('MoveDown'), '', ICON_SIZE_SMALL).'</a>';
        } else {
            Display::display_icon('down_na.png', '&nbsp;', '', ICON_SIZE_SMALL);
        }
    }
    echo '	</td>';
    $question_counter++;

    if ($is_survey_type_1) {
        echo '<td>'.(($row['survey_group_pri'] == 0) ? get_lang('Secondary') : get_lang('Primary')).'</td>';
        echo '<td>'.(($row['survey_group_pri'] == 0) ? $groups[$row['survey_group_sec1']].'-'.$groups[$row['survey_group_sec2']] : $groups[$row['survey_group_pri']]).'</td>';
    }
    echo '</tr>';
}

echo '</table>';

if ($is_survey_type_1) {
    echo '<br /><br /><b>'.get_lang('ManageGroups').'</b><br /><br />';
    if (in_array(
        $_GET['sendmsg'],
        ['GroupUpdatedSuccessfully', 'GroupDeletedSuccessfully', 'GroupCreatedSuccessfully']
    )
    ) {
        echo Display::return_message(
            get_lang($_GET['sendmsg']),
            'confirmation',
            false
        );
    }

    if (in_array($_GET['sendmsg'], ['GroupNeedName'])) {
        echo Display::return_message(
            get_lang($_GET['sendmsg']),
            'warning',
            false
        );
    }
    echo '<table border="0"><tr><td width="100">'.get_lang('Name').'</td><td>'.get_lang('Description').'</td></tr></table>';
    echo '<form action="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?action=addgroup&survey_id='.$survey_id.'" method="post">';
    if ($_GET['action'] == 'editgroup') {
        $sql = 'SELECT name,description FROM '.$table_survey_question_group.' 
                WHERE id = '.intval($_GET['gid']).' AND survey_id = '.intval($survey_id).' limit 1';
        $rs = Database::query($sql);
        $editedrow = Database::fetch_array($rs, 'ASSOC');
        echo '<input type="text" maxlength="20" name="name" value="'.$editedrow['name'].'" size="10" disabled>';
        echo '<input type="text" maxlength="150" name="description" value="'.$editedrow['description'].'" size="40">';
        echo '<input type="hidden" name="group_id" value="'.Security::remove_XSS($_GET['gid']).'">';
        echo '<input type="submit" value="'.get_lang('Save').'"'.'<input type="button" value="'.get_lang('Cancel').'" onclick="window.location.href = \'survey.php?survey_id='.Security::remove_XSS($survey_id).'\';" />';
    } else {
        echo '<input type="text" maxlength="20" name="name" value="" size="10">';
        echo '<input type="text" maxlength="250" name="description" value="" size="80">';
        echo '<input type="submit" value="'.get_lang('Create').'"';
    }
    echo '</form><br />';

    echo '<table class="data_table">';
    echo '	<tr class="row_odd">';
    echo '		<th width="200">'.get_lang('Name').'</th>';
    echo '		<th>'.get_lang('Description').'</th>';
    echo '		<th width="100">'.get_lang('Modify').'</th>';
    echo '	</tr>';

    $sql = 'SELECT id,name,description 
            FROM '.$table_survey_question_group.'
            WHERE 
                c_id = '.$course_id.' AND 
                survey_id = '.intval($survey_id).' 
            ORDER BY name';

    $rs = Database::query($sql);
    while ($row = Database::fetch_array($rs, 'ASSOC')) {
        $grouplist .= '<tr><td>'.$row['name'].'</td><td>'.$row['description'].'</td><td>'.
        '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?survey_id='.$survey_id.'&gid='.$row['id'].'&action=editgroup">'.
        Display::return_icon('edit.png', get_lang('Edit'), '', ICON_SIZE_SMALL).'</a> '.
        '<a href="'.api_get_path(WEB_CODE_PATH).'survey/survey.php?survey_id='.$survey_id.'&gid='.$row['id'].'&action=deletegroup" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(sprintf(get_lang('DeleteSurveyGroup'), $row['name']).'?', ENT_QUOTES)).'\')) return false;">'.
        Display::return_icon('delete.png', get_lang('Delete'), '', ICON_SIZE_SMALL).'</a>'.
        '</td></tr>';
    }
    echo $grouplist.'</table>';
}

Session::erase('answer_count');

Display::display_footer();