<?php
/* For licensing terms, see /license.txt */
/**
 * @package chamilo.notebook
 * @author Christian Fasanando, initial version
 * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium,
 * refactoring and tighter integration
 */

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

$current_course_tool = TOOL_NOTEBOOK;

// The section (tabs)
$this_section = SECTION_COURSES;

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

// Additional javascript
$htmlHeadXtra[] = NotebookManager::javascript_notebook();
$htmlHeadXtra[] = '<script>
function setFocus(){
    $("#note_title").focus();
}
$(document).ready(function () {
    setFocus();
});
</script>';

// Setting the tool constants
$tool = TOOL_NOTEBOOK;

// Tracking
Event::event_access_tool(TOOL_NOTEBOOK);

$action = isset($_GET['action']) ? $_GET['action'] : '';

// Tool name
if ($action === 'addnote') {
	$tool = 'NoteAddNew';
	$interbreadcrumb[] = array('url' => 'index.php?'.api_get_cidreq(), 'name' => get_lang('ToolNotebook'));
}
if ($action === 'editnote') {
	$tool = 'ModifyNote';
	$interbreadcrumb[] = array('url' => 'index.php?'.api_get_cidreq(), 'name' => get_lang('ToolNotebook'));
}

// Displaying the header
Display::display_header(get_lang(ucfirst($tool)));

// Tool introduction
Display::display_introduction_section(TOOL_NOTEBOOK);

// Action handling: Adding a note
if ($action === 'addnote') {
    if (api_get_session_id() != 0 && !api_is_allowed_to_session_edit(false, true)) {
        api_not_allowed();
    }

    if (!empty($_GET['isStudentView'])) {
        NotebookManager::display_notes();
        exit;
    }

	$_SESSION['notebook_view'] = 'creation_date';

    $form = new FormValidator(
        'note',
        'post',
        api_get_self().'?action='.Security::remove_XSS($_GET['action']).'&'.api_get_cidreq()
    );
    // Setting the form elements
    $form->addElement('header', '', get_lang('NoteAddNew'));
    $form->addElement('text', 'note_title', get_lang('NoteTitle'), array('id' => 'note_title'));
    $form->addElement(
        'html_editor',
        'note_comment',
        get_lang('NoteComment'),
        null,
        api_is_allowed_to_edit() ? array('ToolbarSet' => 'Notebook', 'Width' => '100%', 'Height' => '300') : array('ToolbarSet' => 'NotebookStudent', 'Width' => '100%', 'Height' => '300', 'UserStatus' => 'student')
    );
    $form->addButtonCreate(get_lang('AddNote'), 'SubmitNote');

    // Setting the rules
    $form->addRule('note_title', get_lang('ThisFieldIsRequired'), 'required');

    // The validation or display
    if ($form->validate()) {
        $check = Security::check_token('post');
        if ($check) {
            $values = $form->exportValues();
            $res = NotebookManager::save_note($values);
            if ($res) {
                echo Display::return_message(get_lang('NoteAdded'), 'confirmation');
            }
        }
        Security::clear_token();
        NotebookManager::display_notes();
    } else {
        echo '<div class="actions">';
        echo '<a href="index.php">'.Display::return_icon('back.png', get_lang('BackToNotesList'), '', ICON_SIZE_MEDIUM).'</a>';
        echo '</div>';
        $token = Security::get_token();
        $form->addElement('hidden', 'sec_token');
        $form->setConstants(array('sec_token' => $token));
        $form->display();
    }
} elseif ($action === 'editnote' && is_numeric($_GET['notebook_id'])) {
    // Action handling: Editing a note

    if (!empty($_GET['isStudentView'])) {
        NotebookManager::display_notes();
        exit;
    }

    // Initialize the object
    $form = new FormValidator(
        'note',
        'post',
        api_get_self().'?action='.Security::remove_XSS($_GET['action']).'&notebook_id='.intval($_GET['notebook_id']).'&'.api_get_cidreq()
    );
    // Setting the form elements
    $form->addElement('header', '', get_lang('ModifyNote'));
    $form->addElement('hidden', 'notebook_id');
    $form->addElement('text', 'note_title', get_lang('NoteTitle'), array('size' => '100'));
    $form->addElement('html_editor', 'note_comment', get_lang('NoteComment'), null, api_is_allowed_to_edit()
        ? array('ToolbarSet' => 'Notebook', 'Width' => '100%', 'Height' => '300')
        : array('ToolbarSet' => 'NotebookStudent', 'Width' => '100%', 'Height' => '300', 'UserStatus' => 'student')
    );
    $form->addButtonUpdate(get_lang('ModifyNote'), 'SubmitNote');

    // Setting the defaults
    $defaults = NotebookManager::get_note_information(Security::remove_XSS($_GET['notebook_id']));
    $form->setDefaults($defaults);

    // Setting the rules
    $form->addRule('note_title', get_lang('ThisFieldIsRequired'), 'required');

    // The validation or display
    if ($form->validate()) {
        $check = Security::check_token('post');
        if ($check) {
            $values = $form->exportValues();
            $res = NotebookManager::update_note($values);
            if ($res) {
                echo Display::return_message(get_lang('NoteUpdated'), 'confirmation');
            }

        }
        Security::clear_token();
        NotebookManager::display_notes();
    } else {
        echo '<div class="actions">';
        echo '<a href="index.php">'.
            Display::return_icon('back.png', get_lang('BackToNotesList'), '', ICON_SIZE_MEDIUM).'</a>';
        echo '</div>';
        $token = Security::get_token();
        $form->addElement('hidden', 'sec_token');
        $form->setConstants(array('sec_token' => $token));
        $form->display();
    }
} elseif ($action === 'deletenote' && is_numeric($_GET['notebook_id'])) {
    // Action handling: deleting a note
    $res = NotebookManager::delete_note($_GET['notebook_id']);
    if ($res) {
        echo Display::return_message(get_lang('NoteDeleted'), 'confirmation');
    }

    NotebookManager::display_notes();
} elseif (
    $action === 'changeview' && in_array($_GET['view'], array('creation_date', 'update_date', 'title'))) {

    // Action handling: changing the view (sorting order)
    switch ($_GET['view']) {
        case 'creation_date':
            if (!$_GET['direction'] || $_GET['direction'] == 'ASC') {
                echo Display::return_message(get_lang('NotesSortedByCreationDateAsc'), 'confirmation');
            } else {
                echo Display::return_message(get_lang('NotesSortedByCreationDateDESC'), 'confirmation');
            }
            break;
        case 'update_date':
            if (!$_GET['direction'] || $_GET['direction'] == 'ASC') {
                echo Display::return_message(get_lang('NotesSortedByUpdateDateAsc'), 'confirmation');
            } else {
                echo Display::return_message(get_lang('NotesSortedByUpdateDateDESC'), 'confirmation');
            }
            break;
        case 'title':
            if (!$_GET['direction'] || $_GET['direction'] == 'ASC') {
                echo Display::return_message(get_lang('NotesSortedByTitleAsc'), 'confirmation');
            } else {
                echo Display::return_message(get_lang('NotesSortedByTitleDESC'), 'confirmation');
            }
            break;
    }
    $_SESSION['notebook_view'] = $_GET['view'];
    NotebookManager::display_notes();
} else {
    NotebookManager::display_notes();
}

Display::display_footer();