<?php
/*
Plugin Name: synapeditor
Plugin URI: http://www.synapeditor.com
Description: Unlimited Rich Text Editor
Version: 0.1
Author: synapsoft
Author URI: http://www.synapsoft.co.kr
License: GPL 2
*/

/*
 * remove current editor
 */
function wp_remove_editor() {
    remove_post_type_support( 'post', 'editor' );
}

/*
 * add Synap Editor
 */
function wp_add_synapeditor() {
    wp_enqueue_script('synapeditor', plugin_dir_url(__FILE__) . 'resource/synapeditor.js', array( 'jquery' ));
    wp_enqueue_script('synapeditorConfig', plugin_dir_url(__FILE__) . 'resource/synapeditor.config.js');
    wp_enqueue_style('synapeditor',  plugin_dir_url(__FILE__) . 'resource/synapeditor.min.css');

    $post = get_post(get_the_ID());
    $content = apply_filters('the_content', $post->post_content);

    echo "<textarea id=\"content\" name=\"content\" style=\"display: none;\">$content</textarea>" ;
    echo "<script>";
    echo "window.onload = function () {";
    echo "var html = document.getElementById('content').innerText;";
    echo "window.editor = new SynapEditor('content', synapEditorConfig, html);";
    echo "}";
    echo "</script>";
}
add_action('init' ,'wp_remove_editor');
add_action('edit_form_after_title', 'wp_add_synapeditor' );


/*
 * upload file
 */
function upload_file()
{
    $response = array();
    $uploaded_file = wp_handle_upload($_FILES['file'], array('test_form' => false));
    if ($uploaded_file && !isset( $uploaded_file['error'] )) {
        $response['uploadPath'] = parse_url($uploaded_file['url'])['path'];
    }

    echo json_encode($response);
    die();
};
add_action( 'wp_ajax_upload_file', 'upload_file' );
add_action( 'wp_ajax_nopriv_upload_file', 'upload_file' );

/*
 * import document
 */
function import_doc()
{
    $response = array();
    $uploaded_file = wp_handle_upload($_FILES['file'], array('test_form' => false));
    if ($uploaded_file && !isset( $uploaded_file['error'] )) {
        $uploadDir = wp_upload_dir();
        $path_parts = pathinfo($uploaded_file['file']);
        $uploadFileName = $path_parts['filename'];

        // convert document
        $outputFilePath = join(DIRECTORY_SEPARATOR, array($uploadDir['path'], $uploadFileName));
        executeConverter($uploaded_file['file'], $outputFilePath);

        // serialized datas
		// Since v2.3.0, the file name is changed from document.word.pb to document.pb
        $pbFilePath = join(DIRECTORY_SEPARATOR, array($outputFilePath, "document.pb"));
        $serializedData = readPBData($pbFilePath);
        $outputFileUrl = $uploadDir['url'] . "/{$uploadFileName}";
    } else {
        $outputFileUrl = $uploaded_file;
        $serializedData = !isset( $uploaded_file['error'] );
    }

    echo json_encode(array(
        'serializedData' => $serializedData,
        'importPath' => $outputFileUrl
    ));
    die();
}

/*
 * convertor document
 */
function executeConverter($inputFilePath, $outputFilePath)
{
    $sedocConverterPath = plugin_dir_path(__FILE__) . 'resource\sedocConverter\sedocConverter.exe';
    $fontsDir = plugin_dir_path(__FILE__) . 'resource\sedocConverter\fonts';
    $tempDir = plugin_dir_path(__FILE__) . 'resource\sedocConverter\tmp';

    $cmd = "${sedocConverterPath} -f ${fontsDir} ${inputFilePath} ${outputFilePath} ${tempDir}";
    exec($cmd);
}

/*
 * serialized data
 */
function readPBData($pbFilePath)
{
    $fb = fopen($pbFilePath, 'r');
    $data = stream_get_contents($fb, -1, 16);
    fclose($fb);

    $byteArray = unpack('C*', zlib_decode($data));
    $serializedData = array_values($byteArray);

    return $serializedData;
}

add_action( 'wp_ajax_import_doc', 'import_doc' );
add_action( 'wp_ajax_nopriv_import_doc', 'import_doc' );


/**
 * Admin page setting
 */
function me_add_to_admin_menu() {
    add_menu_page( 'Synap Editor Configuration Page', 'Synap Editor Config',
        'manage_options', 'synap-editor-config', 'me_admin_menu' );
}

function me_admin_menu() {
    require('admin/synap-admin.php');
}

function register_my_settings() {
    register_setting( 'synap-editor-conf', 'width' );
    register_setting( 'synap-editor-conf', 'height' );
    register_setting( 'synap-editor-conf', 'default_lang' );
    register_setting( 'synap-editor-conf', 'lang' );
    register_setting( 'synap-editor-conf', 'toolbar' );
}

if (is_admin()) {
    add_action('admin_menu', 'me_add_to_admin_menu');
    add_action('admin_init', 'register_my_settings');
}

<?php
/**
 * Created by synapeditor.
 */

if ( !current_user_can( 'manage_options' ) )  {
    wp_die( __( 'You do not have sufficient permissions to access this page.' ) );
}

?>

<div class="wrap">
    <h1>Synap Editor Configuration</h1>

    <form method="post" action="options.php">
        <?php settings_fields( 'synap-editor-conf' ); ?>
        <?php do_settings_sections( 'synap-editor-conf' ); ?>
        <label for="width">Editor Width</label>
        <input id="width" name="width" type="text" value="<?php echo esc_attr( get_option('width') ); ?>"/>
        <br/>
        <label for="height">Editor Height</label>
        <input id="height" name="height" type="text" value="<?php echo esc_attr( get_option('height') ); ?>"/>

        <hr/>
        <label for="default_lang">Editor Default Language</label>
        <input id="default_lang" name="default_lang" type="text" value="<?php echo esc_attr( get_option('default_lang') ); ?>"/>
        <br/>
        <label for="lang">Editor Language</label>
        <input id="lang" name="lang" type="text" value="<?php echo esc_attr( get_option('lang') ); ?>"/>
        <hr/>
        <fieldset>
            <legend>Editor Toolbar</legend>

            <?php
                $options = get_option( 'toolbar' );
                $toolbars = [
                    ['bold', 'Bold'], ['italic', 'Italic'], ['underline', 'Underline'], ['strike', 'Strikethrough'],
                    ['superScript', 'Superscript'], ['subScript', 'Subscript'], ['fontColor', 'Font Color'], ['fontBackgroundColor', 'Shading Color'],
                    ['align', 'Alignment'], ['copyRunStyle', 'Copy Formatting'], ['pasteRunStyle', 'Paste Formatting'], ['removeRunStyle', 'Clear Formatting'],
                    ['link', 'Hyperlink'], ['image', 'Image'], ['backgroundImage', 'Background Image'], ['video', 'Video'],
                    ['file', 'File'], ['horizontalLine', 'Horizontal Line'], ['specialCharacter', 'Special Character'], ['emoji', 'Emoji'],
                    ['insertDiv', 'Block Layer'], ['bulletList', 'Bulleted List'], ['numberedList', 'Numbered List'], ['multiList', 'Multilevel List']
                ];

                $idx = 0;
                foreach ($toolbars as $toolbar) {
                    echo "<input name='toolbar[$toolbar[0]]' type='checkbox' value='1'", checked( isset( $options[$toolbar[0]] ) ) ,"/> $toolbar[1] ";
                    if (++$idx % 4 == 0) {
                        echo "<br/>";
                    }
                }
            ?>
        </fieldset>


        <?php submit_button(); ?>
    </form>
</div>