load-google-map.php

<?php
/*
 * Plugin Name: Load Google Map
 * Plugin URI: https://github.com/RedQ/googlemap
 * Description: A Simple plugin for loading google map scripts
 * Version: 1.0.1
 * Author: redqteam
 * Author URI: http://redq.io
 * Requires at least: 4.7
 * Tested up to: 5.5
 *
 * Text Domain: load-google-map
 * Domain Path: /languages/
 *
 * Copyright: © 2017 redqteam.
 * License: GNU General Public License v3.0
 * License URI: http://www.gnu.org/licenses/gpl-3.0.html
 *
 */

class Load_Google_Map
{
	/**
	 * @var null
	 */
	protected static $_instance = null;
	/**
	 * @create instance on self
	 */
	public static function instance()
	{
		if (is_null(self::$_instance)) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

	public function __construct()
	{
		$this->load_google_map_bootstrap();
		$this->load_google_map_autoload();
		add_action('admin_enqueue_scripts', array($this, 'load_google_map_enqueue_admin_script'));
		add_action('wp_enqueue_scripts', array($this, 'load_google_map_enqueue_script'));
		// add_filter('script_loader_tag', array($this, 'load_google_map_add_custom_attribute'), 10, 3);
	}

	public function load_google_map_bootstrap()
	{
		define('LGM_DIR', untrailingslashit(plugin_dir_path(__FILE__)));
		define('LGM_URL', untrailingslashit(plugins_url(basename(plugin_dir_path(__FILE__)),	basename(__FILE__))));
		define('LGM_FILE', dirname(__FILE__));
		define('LGM_CSS', LGM_URL . '/assets/dist/css/');
		define('LGM_JS',  LGM_URL . '/assets/dist/js/');
		define('LGM_JS_VENDOR',  LGM_URL . '/assets/dist/vendor/');
		define('LGM_IMG',  LGM_URL . '/assets/dist/vendor/img/');
		define('LGM_INCLUDE', LGM_DIR . '/includes/');
		define('LGM_TEMPLATE_PATH', plugin_dir_path(__FILE__) . 'templates/');
	}

	public function load_google_map_enqueue_admin_script()
	{
		wp_register_style('google-map-settings-form', LGM_JS_VENDOR . 'google-map-settings-form.css', array(), $ver = false, $media = 'all');
		wp_enqueue_style('google-map-settings-form');
		$this->load_google_map_scripts();
	}

	public function load_google_map_enqueue_script()
	{
		$this->load_google_map_scripts();
	}

	public function load_google_map_scripts()
	{
		$googlemap_settings = get_option('googlemap_settings', true);
		if (isset($googlemap_settings)) {
			$map_api_key = isset($googlemap_settings['googlemap_api_key']) ? $googlemap_settings['googlemap_api_key'] : '';
			if (isset($googlemap_settings['googlemap_enable']) && $googlemap_settings['googlemap_enable'] === 'enable' && isset($googlemap_settings['googlemap_api_key']) && $googlemap_settings['googlemap_api_key'] !== '') {
				wp_register_script('google-map-api', '//maps.googleapis.com/maps/api/js?key=' . $googlemap_settings['googlemap_api_key'] . '&libraries=places,geometry&language=en-US', array('jquery', 'underscore'), true, false);
				wp_enqueue_script('google-map-api');
				if (isset($googlemap_settings['richmarker_enable']) && $googlemap_settings['richmarker_enable'] === 'enable') {
					wp_register_script('lgm-rich-marker', LGM_JS_VENDOR . 'rich-marker.js', array('jquery', 'underscore'), $ver = true, true);
					wp_enqueue_script('lgm-rich-marker');
				}
				if (isset($googlemap_settings['markercluster_enable']) && $googlemap_settings['markercluster_enable'] === 'enable') {
					wp_register_script('lgm-map-marker-cluster', LGM_JS_VENDOR . 'markerclusterer.js', array('jquery', 'underscore'), $ver = true, true);
					wp_enqueue_script('lgm-map-marker-cluster');
				}
				if (isset($googlemap_settings['infobubble_enable']) && $googlemap_settings['infobubble_enable'] === 'enable') {
					wp_register_script('lgm-js-info-bubble', LGM_JS_VENDOR . 'infobubble.js', array('jquery', 'underscore'), $ver = true, true);
					wp_enqueue_script('lgm-js-info-bubble');
				}
			}
		}
	}

	public function load_google_map_add_custom_attribute($tag, $handle, $src)
	{
		$defer = [
			'google-map-api',
			'lgm-rich-marker',
			'lgm-map-marker-cluster',
			'lgm-js-info-bubble',
			'jquery'
		];

		if (in_array($handle, $defer)) {
			return '<script src="' . $src . '" defer="defer" type="text/javascript"></script>' . "\n";
		}

		return $tag;

		// foreach ($custom_scripts as $script) {
		// 	if ($script === $handle) {
		// 		return str_replace(' src', ' defer async src', $tag);
		// 	}
		// }
		// return $tag;
	}

	public function load_google_map_autoload()
	{
		require_once(LGM_INCLUDE . 'lgm-admin-menu.php');
	}


	/**
	 * Get the plugin path.
	 * @return string
	 */
	public function plugin_path()
	{
		return untrailingslashit(plugin_dir_path(__FILE__));
	}
}

function load_google_map()
{
	return Load_Google_Map::instance();
}
$GLOBALS['load-google-map'] = load_google_map();

register_activation_hook(__FILE__, 'load_google_map_activate');
function load_google_map_activate()
{
}