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

/**
 * View (MVC patter) for attendance sheet (list, edit, add).
 *
 * @author Christian Fasanando <christian1827@gmail.com>
 * @author Julio Montoya reworked 2010
 *
 * @package chamilo.attendance
 */

// Protect a course script
api_protect_course_script(true);

$isDrhOfCourse = CourseManager::isUserSubscribedInCourseAsDrh(
    api_get_user_id(),
    api_get_course_info()
) || api_is_drh();

if (api_is_allowed_to_edit(null, true) ||
    api_is_coach(api_get_session_id(), api_get_course_int_id()) ||
    $isDrhOfCourse
) {
    $groupId = isset($_REQUEST['group_id']) ? intval($_REQUEST['group_id']) : null;
    $form = new FormValidator(
        'filter',
        'post',
        'index.php?action=attendance_sheet_list&'.api_get_cidreq().'&attendance_id='.$attendance_id,
        null,
        [],
        'inline'
    );

    $values = [
        'all' => get_lang('All'),
        'today' => get_lang('Today'),
        'all_done' => get_lang('All done'),
        'all_not_done' => get_lang('All not done'),
    ];
    $today = api_convert_and_format_date(null, DATE_FORMAT_SHORT);
    $exists_attendance_today = false;

    if (!empty($attendant_calendar_all)) {
        $values[''] = '---------------';
        foreach ($attendant_calendar_all as $attendance_date) {
            $includeCalendar = true;
            if (isset($attendance_date['groups']) && !empty($groupId)) {
                foreach ($attendance_date['groups'] as $group) {
                    if ($groupId == $group['group_id']) {
                        $includeCalendar = true;
                        break;
                    } else {
                        $includeCalendar = false;
                    }
                }
            }

            if ($today == $attendance_date['date']) {
                $exists_attendance_today = true;
            }
            if ($includeCalendar) {
                $values[$attendance_date['id']] = $attendance_date['date_time'];
            }
        }
    }

    if (!$exists_attendance_today) {
        echo Display::return_message(
            get_lang('There is no class scheduled today, try picking another day or add your attendance entry yourself using the action icons.'),
            'warning'
        );
    }

    $form->addSelect(
        'filter',
        get_lang('Filter'),
        $values,
        ['id' => 'filter_id', 'onchange' => 'submit();']
    );

    $groupList = GroupManager::get_group_list(null, null, 1);
    $groupIdList = ['--'];
    foreach ($groupList as $group) {
        $groupIdList[$group['id']] = $group['name'];
    }

    if (!empty($groupList)) {
        $form->addSelect('group_id', get_lang('Group'), $groupIdList);
    }

    if (isset($_REQUEST['filter'])) {
        if (in_array($_REQUEST['filter'], array_keys($values))) {
            $default_filter = $_REQUEST['filter'];
        }
    } else {
        $default_filter = 'today';
    }

    $renderer = $form->defaultRenderer();
    $renderer->setCustomElementTemplate('<div class="col-md-2">{label}</div><div class="col-md-10"> {element} </div>');

    $form->setDefaults(
        [
            'filter' => $default_filter,
            'group_id' => $groupId,
        ]
    );

    if (!$is_locked_attendance || api_is_platform_admin()) {
        $actionsLeft = '<a style="float:left;" href="index.php?'.api_get_cidreq().'&action=calendar_list&attendance_id='.$attendance_id.'">'.
            Display::return_icon('attendance_calendar.png', get_lang('Attendance calendar'), '', ICON_SIZE_MEDIUM).'</a>';
        $actionsLeft .= '<a id="pdf_export" style="float:left;"  href="index.php?'.api_get_cidreq().'&action=attendance_sheet_export_to_pdf&attendance_id='.$attendance_id.'&filter='.$default_filter.'&group_id='.$groupId.'">'.
            Display::return_icon('pdf.png', get_lang('Export to PDF'), '', ICON_SIZE_MEDIUM).'</a>';

        $actionsRight = $form->returnForm();
        $toolbar = Display::toolbarAction('toolbar-attendance', [$actionsLeft, $actionsRight]);
        echo $toolbar;
    }

    $message_information = get_lang('The attendance sheets allow you to specify a list of dates in which you will report attendance to your courses');
    if (!empty($message_information)) {
        $message = '<strong>'.get_lang('Information').'</strong><br />';
        $message .= $message_information;
        echo Display::return_message($message, 'normal', false);
    }

    if ($is_locked_attendance) {
        echo Display::return_message(get_lang('The attendance sheet is locked.'), 'warning', false);
    }

    $param_filter = '&filter='.Security::remove_XSS($default_filter).'&group_id='.$groupId;
    if (count($users_in_course) > 0) {
        ?>
        <script>
            var original_url = '';
            $("#filter_id").on('change', function() {
                filter = $(this).val();
                if (original_url == '') {
                    original_url = $("#pdf_export").attr('href');
                }
                new_url =  original_url + "&filter=" +filter
                $("#pdf_export").attr('href', new_url);
            });

            function UpdateTableHeaders() {
                $("div.divTableWithFloatingHeader").each(function() {
                    var originalHeaderRow = $(".tableFloatingHeaderOriginal", this);
                    var floatingHeaderRow = $(".tableFloatingHeader", this);
                    var offset = $(this).offset();
                    var scrollTop = $(window).scrollTop();
                    if ((scrollTop > offset.top) && (scrollTop < offset.top + $(this).height())) {
                        floatingHeaderRow.css("visibility", "hidden");
                        var topbar = 0;
                        if ($("#topbar").length != 0) {
                            topbar = $("#topbar").height();
                        } else {
                            if ($(".subnav").length != 0) {
                                topbar = $(".subnav").height();
                            }
                        }

                        var top_value = Math.min(scrollTop - offset.top, $(this).height() - floatingHeaderRow.height()) + topbar;

                        floatingHeaderRow.css("top",  top_value + "px");

                        // Copy cell widths from original header
                        $("th", floatingHeaderRow).each(function(index) {
                            var cellWidth = $("th", originalHeaderRow).eq(index).css('width');
                            $(this).css('width', cellWidth);
                        });

                        // Copy row width from whole table
                        floatingHeaderRow.css("width", $(this).css("width"));
                        floatingHeaderRow.css("visibility", "visible");
                        floatingHeaderRow.css("z-index", "1000");
                        originalHeaderRow.css("height", "64px");
                    } else {
                        floatingHeaderRow.css("visibility", "hidden");
                        floatingHeaderRow.css("top", "0px");
                    }
                });
            }

            $(function() {
                $("table.tableWithFloatingHeader").each(function() {
                    $(this).wrap("<div class=\"divTableWithFloatingHeader\" style=\"position:relative\"></div>");

                    var originalHeaderRow = $("tr:first", this)
                    originalHeaderRow.before(originalHeaderRow.clone());
                    var clonedHeaderRow = $("tr:first", this)

                    clonedHeaderRow.addClass("tableFloatingHeader");
                    clonedHeaderRow.css("position", "absolute");
                    clonedHeaderRow.css("top", "0px");
                    clonedHeaderRow.css("left", $(this).css("margin-left"));
                    clonedHeaderRow.css("visibility", "hidden");

                    originalHeaderRow.addClass("tableFloatingHeaderOriginal");
                });

                UpdateTableHeaders();
                $(window).scroll(UpdateTableHeaders);
                $(window).resize(UpdateTableHeaders);
            });
        </script>

        <form method="post" action="index.php?action=attendance_sheet_add&<?php echo api_get_cidreq().$param_filter; ?>&attendance_id=<?php echo $attendance_id; ?>" >
            <div class="attendance-sheet-content" style="width:100%;background-color:#E1E1E1;margin-top:20px;">
                <div class="divTableWithFloatingHeader attendance-users-table" style="width:45%;float:left;margin:0px;padding:0px;">
                    <table class="tableWithFloatingHeader data_table" width="100%">
                        <thead>
                        <tr class="tableFloatingHeader" style="position: absolute; top: 0px; left: 0px; visibility: hidden; margin:0px;padding:0px" >
                            <th width="10px"><?php echo '#'; ?></th>
                            <th width="10px"><?php echo get_lang('Photo'); ?></th>
                            <th width="100px"><?php echo get_lang('Last name'); ?></th>
                            <th width="100px"><?php echo get_lang('First name'); ?></th>
                            <th width="100px"><?php echo get_lang('Not attended'); ?></th>
                        </tr>
                        <tr class="tableFloatingHeaderOriginal" >
                            <th width="10px"><?php echo '#'; ?></th>
                            <th width="10px"><?php echo get_lang('Photo'); ?></th>
                            <th width="150px"><?php echo get_lang('Last name'); ?></th>
                            <th width="140px"><?php echo get_lang('First name'); ?></th>
                            <th width="100px"><?php echo get_lang('Not attended'); ?></th>
                        </tr>
                        </thead>
                        <tbody>
                        <?php
                        $i = 1;
        $class = '';
        foreach ($users_in_course as $data) {
            $faults = 0;
            if ($i % 2 == 0) {
                $class = 'row_odd';
            } else {
                $class = 'row_even';
            }
            $username = api_htmlentities(
                                sprintf(get_lang('Login: %s'), $data['username']),
                                ENT_QUOTES
                            ); ?>
                            <tr class="<?php echo $class; ?>">
                                <td><center><?php echo $i; ?></center></td>
                                <td><?php echo $data['photo']; ?></td>
                                <td><span title="<?php echo $username; ?>"><?php echo $data['lastname']; ?></span></td>
                                <td><?php echo $data['firstname']; ?></td>
                                <td>
                                    <div class="attendance-faults-bar" style="background-color:<?php echo !empty($data['result_color_bar']) ? $data['result_color_bar'] : 'none'; ?>">
                                        <?php echo $data['attendance_result']; ?>
                                    </div>
                                </td>
                            </tr>
                            <?php
                            $i++;
        } ?>
                        </tbody>
                    </table>
                </div>
                <?php

                echo '<div class="divTableWithFloatingHeader attendance-calendar-table" style="margin:0px;padding:0px;float:left;width:55%;overflow:auto;overflow-y:hidden;">';
        echo '<table class="tableWithFloatingHeader data_table" width="100%">';
        echo '<thead>';
        $result = null;
        if (count($attendant_calendar) > 0) {
            foreach ($attendant_calendar as $calendar) {
                $date = $calendar['date'];
                $time = $calendar['time'];
                $datetime = '<div class="grey">'.$date.' - '.$time.'</div>';

                $img_lock = Display::return_icon(
                            'lock-closed.png',
                            get_lang('Unlock date'),
                            ['class' => 'img_lock', 'id' => 'datetime_column_'.$calendar['id']]
                        );

                if (!empty($calendar['done_attendance'])) {
                    $datetime = '<div class="blue">'.$date.' - '.$time.'</div>';
                }
                $disabled_check = 'disabled = "true"';
                $input_hidden = '<input type="hidden" id="hidden_input_'.$calendar['id'].'" name="hidden_input[]" value="" disabled />';
                if ($next_attendance_calendar_id == $calendar['id']) {
                    $input_hidden = '<input type="hidden" id="hidden_input_'.$calendar['id'].'" name="hidden_input[]" value="'.$calendar['id'].'" />';
                    $disabled_check = '';
                    $img_lock = Display::return_icon('lock-closed.png', get_lang('Lock date'), ['class' => 'img_unlock', 'id' => 'datetime_column_'.$calendar['id']]);
                }

                $result .= '<th>';
                $result .= '<div class="date-attendance">'.$datetime.'&nbsp;';
                if (api_is_allowed_to_edit(null, true)) {
                    $result .= '<span id="attendance_lock" style="cursor:pointer">'.(!$is_locked_attendance || api_is_platform_admin() ? $img_lock : '').'</span>';
                }

                if ($is_locked_attendance == false) {
                    if (api_is_allowed_to_edit(null, true)) {
                        $result .= '<input type="checkbox" class="checkbox_head_'.$calendar['id'].'" id="checkbox_head_'.$calendar['id'].'" '.$disabled_check.' checked="checked" />'.$input_hidden.'</div></th>';
                    }
                }
            }
        } else {
            $result = '<th width="2000px"><span><a href="index.php?'.api_get_cidreq().'&action=calendar_list&attendance_id='.$attendance_id.'">';
            $result .= Display::return_icon('attendance_calendar.png', get_lang('Attendance calendar'), '', ICON_SIZE_MEDIUM).' '.get_lang('GoTo attendance calendar').'</a></span></th>';
        }

        echo '<tr class="tableFloatingHeader row_odd" style="position: absolute; top: 0px; left: 0px; visibility: hidden; margin:0px;padding:0px">';
        echo $result;
        echo '</tr>';
        echo '<tr class="tableWithFloatingHeader row_odd tableFloatingHeaderOriginal">';
        echo $result;
        echo '</tr>';
        echo '</thead>';
        echo '<tbody>';
        $i = 0;
        foreach ($users_in_course as $user) {
            $class = '';
            if ($i % 2 == 0) {
                $class = 'row_even';
            } else {
                $class = 'row_odd';
            }
            echo '<tr class="'.$class.'">';

            if (count($attendant_calendar) > 0) {
                foreach ($attendant_calendar as $calendar) {
                    $checked = 'checked';
                    $presence = -1;

                    if (isset($users_presence[$user['user_id']][$calendar['id']]['presence'])) {
                        $presence = $users_presence[$user['user_id']][$calendar['id']]['presence'];
                        if (intval($presence) == 1) {
                            $checked = 'checked';
                        } else {
                            $checked = '';
                        }
                    } else {
                        //if the user wasn't registered at that time, consider unchecked
                        if ($next_attendance_calendar_datetime == 0 ||
                                    $calendar['date_time'] < $next_attendance_calendar_datetime
                                ) {
                            $checked = '';
                        }
                    }
                    $disabled = 'disabled';
                    $style_td = '';

                    if ($next_attendance_calendar_id == $calendar['id']) {
                        if ($i % 2 == 0) {
                            $style_td = 'background-color:#eee;';
                        } else {
                            $style_td = 'background-color:#dcdcdc;';
                        }
                        $disabled = '';
                    }

                    echo '<td style="'.$style_td.'" class="checkboxes_col_'.$calendar['id'].'">';
                    echo '<div class="check">';

                    if (api_is_allowed_to_edit(null, true)) {
                        if (!$is_locked_attendance || api_is_platform_admin()) {
                            echo '<input type="checkbox" name="check_presence['.$calendar['id'].'][]" value="'.$user['user_id'].'" '.$disabled.' '.$checked.' />';
                            echo '<span class="anchor_'.$calendar['id'].'"></span>';
                        } else {
                            echo $presence ? Display::return_icon('checkbox_on.png', get_lang('Assistance'), null, ICON_SIZE_TINY) : Display::return_icon('checkbox_off.png', get_lang('Assistance'), null, ICON_SIZE_TINY);
                        }
                    } else {
                        switch ($presence) {
                                    case 1:
                                        echo Display::return_icon('accept.png', get_lang('Attended'));
                                        break;
                                    case 0:
                                        echo Display::return_icon('exclamation.png', get_lang('Not attended'));
                                        break;
                                    case -1:
                                        //echo Display::return_icon('warning.png',get_lang('Not attended'));
                                        break;
                                }
                    }

                    echo '</div>';
                    echo '</td>';
                }
            } else {
                $calendarClass = null;
                if (isset($calendar)) {
                    $calendarClass = "checkboxes_col_".$calendar['id'];
                }
                echo '<td class="'.$calendarClass.'">';
                echo '<div>';
                echo '<center>&nbsp;</center>
                        </div>
                        </td>';
            }
            echo '</tr>';
            $i++;
        }
        echo '</tbody></table>';
        echo '</div></div>'; ?>

                <div class="row">
                    <div class="col-md-12">
                    <?php if (!$is_locked_attendance || api_is_platform_admin()) {
            if (api_is_allowed_to_edit(null, true)) {
                ?>
                            <button type="submit" class="btn btn-primary"><?php echo get_lang('Save'); ?></button>
                    <?php
            }
        } ?>
                    </div>
                </div>
        </form>
    <?php
    } else {
        echo Display::return_message(
            '<a href="'.api_get_path(WEB_CODE_PATH).'user/user.php?'.api_get_cidreq().'">'.
            get_lang('There are no registered learners inside the course').'</a>',
            'warning',
            false
        );
    }
} else {
    echo Display::page_header(get_lang('Report of attendance sheets'));
    // View for students?>
    <?php if (!empty($users_presence)) {
        ?>
        <div>
            <table width="250px;">
                <tr>
                    <td><?php echo get_lang('To attend').': '; ?></td>
                    <td>
                        <center><div class="attendance-faults-bar" style="background-color:<?php echo !empty($faults['color_bar']) ? $faults['color_bar'] : 'none'; ?>">
                        <?php echo $faults['faults'].'/'.$faults['total'].' ('.$faults['faults_porcent'].'%)'; ?></div></center>
                    </td>
                </tr>
            </table>
        </div>
    <?php
    } ?>
    <table class="data_table">
        <tr class="row_odd" >
            <th><?php echo get_lang('Attendance'); ?></th>
        </tr>
        <?php

        if (!empty($users_presence)) {
            $i = 0;
            foreach ($users_presence[$user_id] as $presence) {
                $class = '';
                if ($i % 2 == 0) {
                    $class = 'row_even';
                } else {
                    $class = 'row_odd';
                } ?>
                <tr class="<?php echo $class; ?>">
                    <td>
                        <?php echo $presence['presence'] ? Display::return_icon('checkbox_on.png', get_lang('Assistance'), null, ICON_SIZE_TINY) : Display::return_icon('checkbox_off.png', get_lang('Assistance'), null, ICON_SIZE_TINY); ?>
                        <?php echo "&nbsp; ".$presence['date_time']; ?>
                    </td>
                </tr>
            <?php
            }
        } else {
            ?>
            <tr><td>
                <center><?php echo get_lang('You do not have attendances'); ?></center></td>
            </tr>
        <?php
        } ?>
    </table>
<?php
} ?>
