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

require_once __DIR__.'/../inc/global.inc.php';

$this_section = SECTION_COURSES;
$current_course_tool = TOOL_GROUP;

// Notice for unauthorized people.
api_protect_course_script(true);

if (!api_is_allowed_to_edit(false, true)) {
    api_not_allowed(true);
}

$nameTools = get_lang('Import');
$interbreadcrumb[] = [
    'url' => 'group.php?'.api_get_cidreq(),
    'name' => get_lang('Groups'),
];

$form = new FormValidator(
    'import',
    'post',
    api_get_self().'?'.api_get_cidreq()
);
$form->addElement('header', get_lang('Import groups'));
$form->addElement('file', 'file', get_lang('CSV file import location'));
$form->addRule('file', get_lang('Required field'), 'required');
$form->addElement(
    'checkbox',
    'delete_not_in_file',
    null,
    get_lang('Delete items not in file')
);
$form->addElement(
    'label',
    null,
    Display::url(
        get_lang('Example CSV file'),
        api_get_path(WEB_CODE_PATH).'group/example.csv',
        ['download' => true]
    )
);
$form->addButtonImport(get_lang('Import'));

if ($form->validate()) {
    if (isset($_FILES['file']['tmp_name']) &&
        !empty($_FILES['file']['tmp_name'])
    ) {
        $groupData = Import::csv_reader($_FILES['file']['tmp_name']);
        $deleteNotInArray = $form->getSubmitValue('delete_not_in_file') == 1 ? true : false;

        $result = GroupManager::importCategoriesAndGroupsFromArray(
            $groupData,
            $deleteNotInArray
        );

        if (!empty($result)) {
            $html = null;

            foreach ($result as $status => $data) {
                if ($status != 'error') {
                    if (empty($data['category']) && empty($data['group'])) {
                        continue;
                    }
                }

                $html .= " <h3>".get_lang(ucfirst($status)).' </h3>';

                if (!empty($data['category'])) {
                    $html .= "<h4> ".get_lang('Categories').':</h4>';
                    foreach ($data['category'] as $category) {
                        $html .= "<div>".$category['category']."</div>";
                    }
                }

                if (!empty($data['group'])) {
                    $html .= "<h4> ".get_lang('Groups').':</h4>';
                    foreach ($data['group'] as $group) {
                        $html .= "<div>".$group['group']."</div>";
                    }
                }

                if ($status == 'error') {
                    if (!empty($data)) {
                        foreach ($data as $message) {
                            if (!empty($message)) {
                                $html .= "<div>".$message."</div>";
                            }
                        }
                    }
                }
            }

            Display::addFlash(
                Display::return_message($html, 'information', false)
            );

            header('Location: '.api_get_path(WEB_CODE_PATH).'group/group.php?'.api_get_cidreq());
            exit;
        }
    }
}

Display::display_header($nameTools, 'Group');
$form->display();
Display::display_footer();
