<?php # -*- coding: utf-8 -*-

/**
 * Plugin Name:     Shortcode Replace
 * Plugin URI:
 * Description:
 * Version:         0.0.1
 * Text Domain:
 * Domain Path:     /languages
 * License:         MIT
 * License URI:
 */

namespace FbShortcodeReplace;

if ( ! function_exists( 'add_action' ) ) {
    exit();
}

if ( ! is_admin() ) {
    return;
}

add_action( 'admin_enqueue_scripts', __NAMESPACE__ . 'initialize' );
function initialize( $page ) {

    if ( 'post.php' === $page ) {
        add_filter( 'mce_external_plugins', __NAMESPACE__ . 'add_tinymce_plugin' );
    }
}

function add_tinymce_plugin( $plugins ) {

    if ( ! is_array( $plugins ) ) {
        $plugins = array();
    }

    $suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '.dev' : '';
    $url     = plugins_url( '/assets/js/fb_shortcode_replace.js', __FILE__ );

    $plugins = array_merge( $plugins, array( 'fb_shortcode_replace' => $url ) );
    return $plugins;
}

tinymce.PluginManager.add( 'fb_shortcode_replace', function( editor ) {

    var shortcode = /[.+]/g;
    var additional = 'FB-TEST';

    function ifShortcode( content ) {

        return content.search( /[.+]/ ) !== -1;
    }

    function replaceShortcodes( content ) {

        return content.replace( shortcode, function( match ) {
            return html( match );
        } );
    }

    function restoreShortcodes( content ) {

        return content.replace( additional, '' );
    }

    function html( data ) {

        console.log( data );
        return additional + data + additional;
    }

    editor.on( 'BeforeSetContent', function( event ) {

        // No shortcodes in content, return.
        if ( ! ifShortcode( event.content ) ) {
            return;
        }

        event.content = replaceShortcodes( event.content );
    } );


    editor.on( 'PostProcess', function( event ) {

        if ( event.get ) {
            event.content = restoreShortcodes( event.content );
        }
    } );
} );