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Editing: skyverge-dashboard.php

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<?php
/**
 * Plugin Name: SkyVerge Dashboard
 * Plugin URI: https://skyverge.com/
 * Description: Contact support and receive important messages for your SkyVerge plugins directly in the admin area.
 * Author: SkyVerge
 * Author URI: https://skyverge.com
 * Version: 1.0.0
 * Text Domain: skyverge-dashboard
 * Domain Path: /i18n/languages/
 *
 * Copyright: (c) 2020 SkyVerge, Inc. (info@skyverge.com)
 *
 * License: GNU General Public License v3.0
 * License URI: https://www.gnu.org/licenses/gpl-3.0.html
 *
 * @author    SkyVerge
 * @copyright Copyright (c) 2020, SkyVerge, Inc.
 * @license   https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0
 */

defined( 'ABSPATH' ) or exit;

/**
 * The dashboard loader.
 *
 * @since 1.0.0
 */
class SkyVerge_Dashboard_Loader {

/** minimum PHP version required by this plugin */
	const MINIMUM_PHP_VERSION = '5.6';

/** minimum WordPress version required by this plugin */
	const MINIMUM_WP_VERSION = '4.4';

/** the plugin name, for displaying notices */
	const PLUGIN_NAME = 'SkyVerge Dashboard';

/** @var \SkyVerge_Dashboard_Loader instance */
	private static $instance;

/** @var \Composer\Autoload\ClassLoader instance */
	private $loader;

/** @var array the admin notices to add */
	private $notices = array();

/**
	 * Constructs the loader.
	 *
	 * @since 1.0.0
	 */
	protected function __construct() {

register_activation_hook( __FILE__, array( $this, 'activation_check' ) );

add_action( 'admin_init', array( $this, 'check_environment' ) );
		add_action( 'admin_init', array( $this, 'add_plugin_notices' ) );

add_action( 'admin_notices', array( $this, 'display_admin_notices' ), 15 );

// if the environment check fails, initialize the plugin
		if ( $this->is_environment_compatible() ) {

require_once( 'vendor/skyverge/wordpress-plugin-admin/load.php' );

add_action( 'plugins_loaded', array( $this, 'init_plugin' ) );
		}
	}

/**
	 * Cloning instances is forbidden due to singleton pattern.
	 *
	 * @since 1.0.0
	 */
	public function __clone() {

_doing_it_wrong( __FUNCTION__, sprintf( 'You cannot clone instances of %s.', get_class( $this ) ), '1.0.0' );
	}

/**
	 * Unserializing instances is forbidden due to singleton pattern.
	 *
	 * @since 1.0.0
	 */
	public function __wakeup() {

_doing_it_wrong( __FUNCTION__, sprintf( 'You cannot unserialize instances of %s.', get_class( $this ) ), '1.0.0' );
	}

/**
	 * Initializes the plugin.
	 *
	 * @since 1.0.0
	 */
	public function init_plugin() {

if ( ! $this->is_wp_compatible() ) {
			return;
		}

// autoload plugin and vendor files
		if ( null === $this->loader ) {
			$this->loader = require_once( plugin_dir_path( __FILE__ ) . 'vendor/autoload.php' );
		}

// register plugin namespace with autoloader
		$this->loader->addPsr4( 'SkyVerge\\Dashboard\\', __DIR__ . '/src' );

// loads the dashboard plugin
		// note: uses eval to handle the namespace so older PHP version won't error out while reading this file
		eval( "\SkyVerge\Dashboard\Plugin::instance();" );
	}

/**
	 * Checks the server environment and other factors and deactivates plugins as necessary.
	 *
	 * Based on http://wptavern.com/how-to-prevent-wordpress-plugins-from-activating-on-sites-with-incompatible-hosting-environments
	 *
	 * @internal
	 *
	 * @since 1.0.0
	 */
	public function activation_check() {

if ( ! $this->is_environment_compatible() ) {

$this->deactivate_plugin();

wp_die( self::PLUGIN_NAME . ' could not be activated. ' . $this->get_environment_message() );
		}
	}

/**
	 * Checks the environment on loading WordPress, just in case the environment changes after activation.
	 *
	 * @internal
	 *
	 * @since 1.0.0
	 */
	public function check_environment() {

if ( ! $this->is_environment_compatible() && is_plugin_active( plugin_basename( __FILE__ ) ) ) {

$this->deactivate_plugin();

$this->add_admin_notice( 'bad_environment', 'error', self::PLUGIN_NAME . ' has been deactivated. ' . $this->get_environment_message() );
		}
	}

/**
	 * Deactivates the plugin.
	 *
	 * @internal
	 *
	 * @since 1.0.0
	 */
	protected function deactivate_plugin() {

deactivate_plugins( plugin_basename( __FILE__ ) );

if ( isset( $_GET['activate'] ) ) {
			unset( $_GET['activate'] );
		}
	}

/**
	 * Adds notices for out-of-date WordPress and/or WooCommerce versions.
	 *
	 * @internal
	 *
	 * @since 1.0.0
	 */
	public function add_plugin_notices() {

if ( ! $this->is_wp_compatible() ) {

$this->add_admin_notice( 'update_wordpress', 'error', sprintf(
				'%s requires WordPress version %s or higher. Please %supdate WordPress &raquo;%s',
				'<strong>' . self::PLUGIN_NAME . '</strong>',
				self::MINIMUM_WP_VERSION,
				'<a href="' . esc_url( admin_url( 'update-core.php' ) ) . '">', '</a>'
			) );
		}
	}

/**
	 * Adds an admin notice to be displayed.
	 *
	 * @since 1.0.0
	 *
	 * @param string $slug the slug for the notice
	 * @param string $class the css class for the notice
	 * @param string $message the notice message
	 */
	private function add_admin_notice( $slug, $class, $message ) {

$this->notices[ $slug ] = array(
			'class'   => $class,
			'message' => $message
		);
	}

/**
	 * Displays any admin notices added with \SV_WC_Framework_Plugin_Loader::add_admin_notice()
	 *
	 * @internal
	 *
	 * @since 1.0.0
	 */
	public function display_admin_notices() {

foreach ( (array) $this->notices as $notice_key => $notice ) {

?>
			<div class="<?php echo esc_attr( $notice['class'] ); ?>">
				<p><?php echo wp_kses( $notice['message'], array( 'a' => array( 'href' => array() ) ) ); ?></p>
			</div>
			<?php
		}
	}

/**
	 * Determines if the WordPress compatible.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	private function is_wp_compatible() {

return version_compare( get_bloginfo( 'version' ), self::MINIMUM_WP_VERSION, '>=' );
	}

/**
	 * Determines if the server environment is compatible with this plugin.
	 *
	 * Override this method to add checks for more than just the PHP version.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	private function is_environment_compatible() {

return version_compare( PHP_VERSION, self::MINIMUM_PHP_VERSION, '>=' );
	}

/**
	 * Gets the message for display when the environment is incompatible with this plugin.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	private function get_environment_message() {

return sprintf( 'The minimum PHP version required for this plugin is %1$s. You are running %2$s.', self::MINIMUM_PHP_VERSION, PHP_VERSION );
	}

/**
	 * Gets the main \SV_WC_Framework_Plugin_Loader instance.
	 *
	 * Ensures only one instance can be loaded.
	 *
	 * @since 1.0.0
	 *
	 * @return \SkyVerge_Dashboard_Loader
	 */
	public static function instance() {

if ( null === self::$instance ) {
			self::$instance = new self();
		}

return self::$instance;
	}

}

// fire it up!
SkyVerge_Dashboard_Loader::instance();

Editing: skyverge-dashboard.php

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