wpwsl_core.php

<?php

/**
 * Plugin Name: WeChat Subscribers Lite
 * Plugin URI: http://www.imredy.com/wp-wechat/
 * Description: 轻便易用的微信(weixin)公众平台订阅号管理工具。Light weight WeChat (Subscribers) public platform management tool.
 * Version: 1.7.0
 * Author: Redy Ru, Robin Zhao
 * Author URI: http://www.imredy.com/
 * License: GPLv2 or later
 * Text Domain: WPWSL
 * Domain Path: /languages
 */
if (!defined('ABSPATH')) {
    exit;
}

define('WPWSL_PLUGIN_URL', plugins_url('', __FILE__));
define('WPWSL_GENERAL_PAGE', 'wpwsl-general-page');
define('WPWSL_HISTORY_PAGE', 'wpwsl-history-page');
define('WPWSL_SETTINGS_PAGE', 'wpwsl-settings-page');
define('WPWSL_SETTINGS_OPTION', 'wpwsl_settings_option');
define('SELECT_ROWS_AMOUNT', 100);
define('SYNC_TITLE_LIMIT', 50);
define('SYNC_CONTENT_LIMIT', 300);
define('SYNC_EXCERPT_LIMIT', 100);
define('MAX_SEARCH_LIMIT', 6);
define('DB_TABLE_WPWSL_HISTORY', 'wechat_subscribers_lite_history');

//Interface
$options = get_option(WPWSL_SETTINGS_OPTION);
global $token;
$token = isset($options['token']) ? $options['token'] : '';

add_action('parse_request', 'load_interface');
//Languages
add_action('plugins_loaded', 'load_languages_file');
//create db table wechat_subscribers_lite_messages
add_action('plugins_loaded', 'create_history_table');
add_action('after_setup_theme', 'set_wechat_img_size');
add_filter('image_size_names_choose', 'sup_wechat_custom_sizes');

//Setup Admin
add_action('_admin_menu', 'wpwsl_admin_setup');

//AJAX handle
add_action('admin_init', 'ajax_handle', 999);

//Safe Redirect
add_action('admin_init', 'safe_redirect', 999);

//Scripts
add_action('admin_print_scripts', 'custom_admin_scripts');

$plugin = plugin_basename(__FILE__);
add_filter("plugin_action_links_$plugin", 'wpwsl_plugin_settings_link');


//utils
function trim_words($str, $limit, $suffix = '...', $db_charset = DB_CHARSET,
    $strip_tags = true)
{
    if ($strip_tags) {
        $str = strip_tags($str);
    }
    if (strpos($db_charset, "utf8") !== false) {
        $db_charset = "utf8";
    }
    $new_str = mb_substr($str, 0, $limit, $db_charset);
    $new_str = mb_strlen($str, $db_charset) > $limit ? $new_str . $suffix : $new_str;
    return $new_str;
}

function load_interface()
{
    global $token;
    if ($token != '' && isset($_GET[$token])) {
        require( 'interface.php' );
    }
}

function load_languages_file()
{
    load_plugin_textdomain('WPWSL', false, dirname(plugin_basename(__FILE__)) . '/languages/');
}

function create_history_table()
{
    global $wpdb;
    $table_name = DB_TABLE_WPWSL_HISTORY;
    $sql = "CREATE TABLE $table_name (
    id bigint(20) NOT NULL KEY AUTO_INCREMENT,
    openid   varchar(100) NOT NULL,
    keyword  varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
    is_match char(1)   NOT NULL,
    time     datetime  NOT NULL
    );";

    require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
    dbDelta($sql);
}

//Setup wechat image size
function set_wechat_img_size()
{
    add_image_size('sup_wechat_big', 360, 200, true);
    add_image_size('sup_wechat_small', 200, 200, true);
}


function sup_wechat_custom_sizes($sizes)
{
    return array_merge($sizes, [
        'sup_wechat_big' => __('WeChat big image', 'WPWSL'),
        'sup_wechat_small' => __('WeChat small image', 'WPWSL')
    ]);
}


//Setup Admin
function wpwsl_admin_setup(){
     global $user_level;
     if($user_level>=5){
    	require_once( 'posttype_wpwsl_template.php' );

    	$page_title=__('WeChat Subscribers Lite', 'WPWSL');
    	$menu_title=__('WeChat Subscribers Lite', 'WPWSL');
    	$capability='edit_pages';
    	$menu_slug=WPWSL_GENERAL_PAGE;
    	$function='';
    	$icon_url=WPWSL_PLUGIN_URL.'/img/wpwsl_icon_16.png';
    	add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function, $icon_url );

    	require_once( 'class-wpwsl-settings.php' );
    	require_once( 'class-wpwsl-general.php' );
    	require_once( 'class-wpwsl-history.php' );
    	//Settings
    	$settingObject=WPWSL_Settings::get_instance();
    	//General
    	$generalObject=WPWSL_General::get_instance();
    	//History
    	$hitsotryObject=WPWSL_History::get_instance();
    }
}

function ajax_handle()
{
    require_once( 'ajax_request_handle.php');
}

function safe_redirect()
{
    if (isset($_GET['_wp_http_referer'])) {
        wp_redirect(remove_query_arg([
            '_wp_http_referer',
            '_wpnonce'], stripslashes($_SERVER['REQUEST_URI'])));
    }
}

//add custom upload jquery support.
function custom_admin_scripts()
{
    wp_enqueue_script('jquery');
    wp_enqueue_media();
    wp_register_script('custom-upload', WPWSL_PLUGIN_URL . '/js/custom_upload.js', [
        'jquery',
        'media-upload',
        'thickbox'], "2.0");
    wp_enqueue_script('custom-upload');
    wp_register_script('modal', WPWSL_PLUGIN_URL . '/js/modal.js', [], "2.0");
    wp_enqueue_script('modal');
}

// Add settings link on plugin page
function wpwsl_plugin_settings_link($links)
{
    $settings_link = '<a href="' . menu_page_url(WPWSL_SETTINGS_PAGE, false) . '">' . __('Settings', 'WPWSL') . '</a>';
    array_unshift($links, $settings_link);
    return $links;
}

class WpwslHelper
{
    public static function get($name, $default = '')
    {
        return isset($_GET[$name]) ? $_GET[$name] : $default;
    }

    public static function post($name, $default = '')
    {
        return isset($_POST[$name]) ? $_POST[$name] : $default;
    }
}