private function __construct() { /* Do nothing here */ }

/**

* Main HEIBApp Instance.

*

*/

public static function getInstance() {

// Store the instance locally to avoid private static replication

static $instance = null;

// Only run these methods if they haven't been run previously

if ( null === $instance ) {

$instance = new HEIBApp;

$instance->defineConstants();

$instance->version();

$instance->setupHooks();

}

// Always return the instance

return $instance;

}

private function defineConstants(){

}

private function version(){

}

private function setupHooks(){

if(is_admin()){

$this->adminHooks();

} else {

$this->frontendHooks();

}

$this->apiHooks();

$this->commonHooks();

$this->shortcodeHooks();

$this->ajaxHooks();

//hook for 3rd plugin to add additional endpoints/shortcodes

do_action('heib_hooks_loaded');

}

private function ajaxHooks(){

add_action( 'wp_ajax_heib_ajax', 'HEIBApp::ajaxProcess' );

add_action( 'wp_ajax_nopriv_heib_ajax', 'HEIBApp::ajaxProcess' );

}

private function adminHooks(){

//admin menu

add_action('admin_menu', 'HEIBApp::admin_menu');

}

private function frontendHooks(){

HEIBApp::frontend_enqueue_scripts();

}

private function apiHooks(){

require_once(dirname(__FILE__) . '/includes/endpoints.php');

}

private function commonHooks(){

}

private function shortcodeHooks(){

require_once(dirname(__FILE__) . '/includes/shortcodes.php');

HEIBShortcode::init();

}

/****************************************** Define hook call back function ***************************************/

public static function admin_menu(){

$parent_slug = 'heib_dashboard';

$handle = 'HEIBApp::getDashboardContent';

$capability = 'publish_pages';

//menu page

$page = add_menu_page( 'Informative Boxes',

'Informative Boxes',

//'manage_options',

$capability,

$parent_slug,

$handle,

'');

//hight top menu

add_submenu_page( $parent_slug,

'Settings',

'Settings',

$capability,

$parent_slug);

$designPage = add_submenu_page( $parent_slug,

'Box Design',

'Box Design',

$capability,

'heib_design',

'HEIBApp::getDesignContent' );

add_action( 'admin_print_styles-' . $designPage, 'HEIBApp::admin_enqueue_styles' );

add_action( 'admin_print_scripts-' . $designPage, 'HEIBApp::admin_enqueue_scripts' );

//call register settings function

add_action( 'admin_init', 'HEIBAPP::register_plugin_settings' );

}

public static function admin_enqueue_styles(){

}

public static function admin_enqueue_scripts(){

wp_enqueue_script( 'heibadmin', plugins_url( '/dist/backend.bundle.js' , __FILE__ ), array( 'jquery' ));

wp_enqueue_script( 'heibadmin_config', plugins_url( '/assets/js/config.js' , __FILE__ ), array( 'heibadmin' ));

}

public static function frontend_enqueue_scripts(){

if(get_option('heib_enable', 1)){

add_action('wp_head',function(){

echo '<script type="text/javascript"> var ajaxurl = "' . admin_url('admin-ajax.php') .'"</script>';

});

wp_enqueue_script( 'heibfrontend', plugins_url( '/dist/frontend.bundle.js' , __FILE__ ), array( 'jquery' ));

wp_enqueue_script( 'heibfrontend_config', plugins_url( '/assets/js/config.js' , __FILE__ ), array( 'heibfrontend' ));

}

}

public static function admin_content(){

if(isset($_REQUEST['view']) && $_REQUEST['view'] == 'design'){

HEIBApp::getDesignContent();

} else {

HEIBApp::getDashboardContent();

}

}

public static function register_plugin_settings(){

//register our settings

register_setting( 'heib-settings-group', 'heib_blacklist_urls' );

register_setting( 'heib-settings-group', 'heib_enable' );

}

public static function getDashboardContent(){

?>

<div class="wrap">

<h2>Informative Boxes Settings</h2>

<form method="post" action="options.php">

<?php settings_fields( 'heib-settings-group' ); ?>

<?php do_settings_sections( 'heib-settings-group' ); ?>

<table class="form-table">

<tr valign="top">

<th scope="row">Enable Informative Box</th>

<td>

<select name="heib_enable" value="<?php echo esc_attr( get_option('heib_enable') ); ?>">

<option value="1" <?php if(esc_attr( get_option('heib_enable', 1) ) == 1) echo "selected"?>>Yes</option>

<option value="0" <?php if(esc_attr( get_option('heib_enable', 1) ) == 0) echo "selected"?>>No</option>

</select>

</td>

</tr>

<tr valign="top">

<th scope="row">Do not show Informative Boxes for urls</th>

<td>

<textarea rows="5" cols="40" name="heib_blacklist_urls"><?php echo esc_attr( get_option('heib_blacklist_urls') ); ?></textarea>

</td>

</tr>

</table>

<?php submit_button(); ?>

</form>

</div>

<?php

}

public static function getDesignContent(){

echo '<div id="heib_wrapper"></div>';

$settings = array( 'media_buttons' => false );

$editor_id = 'heib-editor';

wp_editor( '', $editor_id, $settings );

}

public static function ajaxProcess(){

$res = new HEIBResponse();

$res = HEIBApp::processEndpoint($res);

echo $res->toJson();

exit;

}

public static function processEndpoint($res){

$query = $res->query();

if(!$query['endpoint']){

$res->error = 1;

$res->errMsg = 'No endpoints are provided';

} else {

$res = apply_filters('heib_process_endpoint__' . $query['endpoint'], $res);

}

return $res;

}

/****************************************** End hook call back function ***************************************/

protected $query;

public function __construct($query = null){

global $heib__Response;

if(is_null($query)){

$query = $_REQUEST;

}

$this->query = $query;

//setup global response

$heib__Response = $this;

// parent::__construct();

}

public function query(){

return $this->query;

}

public function toJson(){

return json_encode($this);

}

public function toObject(){

$rtn = new stdClass();

if(isset($this->data)){

$rtn->data = $this->data;

}

if(isset($this->error)){

$rtn->error = $this->error;

}

if(isset($this->errMsg)){

$rtn->errMsg = $this->errMsg;

}

return $rtn;

}