<?php
/*
 * Plugin Name: Author Chat Plugin
 * Plugin URI: http://ordin.pl/
 * Description: Plugin that gives your authors an easy way to communicate through back-end UI (admin panel).
 * Author: Piotr Pesta
 * Version: 1.4.1 
 * Author URI: http://ordin.pl/
 * License: GPL12
 * Text Domain: author-chat
 * Domain Path: /lang
 */

include 'pp-process.php';

add_action('admin_menu', 'pp_author_chat_setup_menu');
add_action('wp_dashboard_setup', 'pp_wp_dashboard_author_chat');
add_action('admin_enqueue_scripts', 'pp_scripts_admin_chat');
register_activation_hook(__FILE__, 'pp_author_chat_activate');
register_uninstall_hook(__FILE__, 'pp_author_chat_uninstall');
add_action('plugins_loaded', 'pp_author_chat_load_textdomain');

function pp_author_chat_load_textdomain() {
    load_plugin_textdomain('author-chat', false, dirname(plugin_basename(__FILE__)) . '/lang/');
}

// create author_chat table
function pp_author_chat_activate() {
    global $wpdb;
    $author_chat_table = $wpdb->prefix . 'author_chat';
    $wpdb->query("CREATE TABLE IF NOT EXISTS $author_chat_table (
		id BIGINT(50) NOT NULL AUTO_INCREMENT PRIMARY KEY,
		nickname TINYTEXT NOT NULL,
		content TEXT NOT NULL,
		date DATETIME)
		CHARACTER SET utf8 COLLATE utf8_bin
		;");
    add_option('author_chat_settings', 30);
    add_option('author_chat_settings_access_editor', 0);
    add_option('author_chat_settings_access_author', 0);
    add_option('author_chat_settings_access_contributor', 0);
    add_option('author_chat_settings_access_subscriber', 0);
    add_option('author_chat_settings_access_all_users', 1);
    add_option('author_chat_settings_name', 0);
}

// delete author_chat table
function pp_author_chat_uninstall() {
    global $wpdb;
    $author_chat_table = $wpdb->prefix . 'author_chat';
    $wpdb->query("DROP TABLE IF EXISTS $author_chat_table");
    delete_option('author_chat_settings');
    delete_option('author_chat_settings_delete');
    delete_option('author_chat_settings_access_editor');
    delete_option('author_chat_settings_access_author');
    delete_option('author_chat_settings_access_contributor');
    delete_option('author_chat_settings_access_subscriber');
    delete_option('author_chat_settings_access_all_users');
    delete_option('author_chat_settings_name');
}

function pp_scripts_admin_chat() {
    wp_enqueue_script('chat-script', plugins_url('chat.js', __FILE__), array('jquery'));
    wp_enqueue_style('author-chat-style', plugins_url('author-chat-style.css', __FILE__));
}

function pp_author_chat_setup_menu() {
    include 'pp-options.php';
    $optionsTitle = __( 'Author Chat Options', 'author-chat' );
    add_dashboard_page('Author Chat', 'Author Chat', 'read', 'author-chat', 'pp_author_chat');
    add_menu_page($optionsTitle, $optionsTitle, 'administrator', 'acset', 'author_chat_settings', 'dashicons-carrot');
    add_action('admin_init', 'register_author_chat_settings');
}

function pp_wp_dashboard_author_chat() {
    wp_add_dashboard_widget('author-chat-widget', 'Author Chat', 'pp_author_chat');
}

function register_author_chat_settings() {
    register_setting('author_chat_settings_group', 'author_chat_settings');
    register_setting('author_chat_settings_group', 'author_chat_settings_delete');
    register_setting('author_chat_settings_group', 'author_chat_settings_access_editor');
    register_setting('author_chat_settings_group', 'author_chat_settings_access_author');
    register_setting('author_chat_settings_group', 'author_chat_settings_access_contributor');
    register_setting('author_chat_settings_group', 'author_chat_settings_access_subscriber');
    register_setting('author_chat_settings_group', 'author_chat_settings_access_all_users');
    register_setting('author_chat_settings_group', 'author_chat_settings_name');
}

function pp_author_chat() {
    global $current_user;
    get_currentuserinfo();
    if ((get_option('author_chat_settings_access_subscriber') == '1' && $current_user->user_level == '0') || (get_option('author_chat_settings_access_contributor') == '1' && $current_user->user_level == '1') || (get_option('author_chat_settings_access_author') == '1' && $current_user->user_level == '2') || (get_option('author_chat_settings_access_editor') == '1' && $current_user->user_level == '3') || (get_option('author_chat_settings_access_editor') == '1' && $current_user->user_level == '4') || (get_option('author_chat_settings_access_editor') == '1' && $current_user->user_level == '5') || (get_option('author_chat_settings_access_editor') == '1' && $current_user->user_level == '6') || (get_option('author_chat_settings_access_editor') == '1' && $current_user->user_level == '7' || $current_user->user_level == '8' || $current_user->user_level == '9' || $current_user->user_level == '10') || get_option('author_chat_settings_access_all_users') == '1') {
        ?>

        <script type="text/javascript">
            var chat = new Chat();
            jQuery(window).load(function () {
                chat.initiate();
                setInterval(function () {
                    chat.getState();
                }, 2000);
            });

        </script>

        <div id="page-wrap">

            <h2><?php _e( 'Author Chat', 'author-chat' ); ?></h2>

            <p id="name-area"></p>

            <div id="chat-wrap"><div id="chat-area"></div></div>

            <form id="send-message-area">
                <textarea id="sendie" maxlength = "1000" placeholder="<?php _e( 'Your message...', 'author-chat' ); ?>"></textarea>
            </form>

        </div>

        <script type="text/javascript">

            // shows current user name as name
            var name = "<?php echo $username = (get_option('author_chat_settings_name') == 0) ? $current_user->user_login : $current_user->display_name; ?>";

            // display name on page
            jQuery("#name-area").html("<?php _e( 'You are:', 'author-chat' ); ?> <span>" + name + "</span>");

            // kick off chat
            var chat = new Chat();
            jQuery(function () {

                // watch textarea for key presses
                jQuery("#sendie").keydown(function (event) {

                    var key = event.which;

                    //all keys including return.  
                    if (key >= 33) {

                        var maxLength = jQuery(this).attr("maxlength");
                        var length = this.value.length;

                        // don't allow new content if length is maxed out
                        if (length >= maxLength) {
                            event.preventDefault();
                        }
                    }
                });
                // watch textarea for release of key press
                jQuery('#sendie').keyup(function (e) {

                    if (e.keyCode == 13) {

                        var text = jQuery(this).val();
                        var maxLength = jQuery(this).attr("maxlength");
                        var length = text.length;

                        // send 
                        if (length <= maxLength + 1) {

                            chat.send(text, name);
                            jQuery(this).val("");

                        } else {

                            jQuery(this).val(text.substring(0, maxLength));

                        }
                    }
                });
            });
        </script>

        <?php
    }
    pp_author_chat_clean_up_chat_history();

    if (get_option('author_chat_settings_delete') == 1) {
        pp_author_chat_clean_up_database();
    }
}

function pp_author_chat_clean_up_chat_history() {
    global $wpdb;
    $daystoclear = get_option('author_chat_settings');
    $author_chat_table = $wpdb->prefix . 'author_chat';
    $wpdb->query("DELETE FROM $author_chat_table WHERE date <= NOW() - INTERVAL $daystoclear DAY");
}

function pp_author_chat_clean_up_database() {
    global $wpdb;
    $author_chat_table = $wpdb->prefix . 'author_chat';
    $wpdb->query("TRUNCATE TABLE $author_chat_table");
    $update_options = get_option('author_chat_settings_delete');
    $update_options = '';
    update_option('author_chat_settings_delete', $update_options);
}
?>