Add composer support

.gitignore

@@ -0,0 +1,2 @@
+vendor/
+vendor/*

README.md

@@ -1,9 +1,38 @@
 # WP Batch Processing
 
-WP Batch Processing is WordPress plugin for creating batches of data and processing the the data items one by one. It allows you to define a batch and to process the queued batch items one by one. There is also option to resume/continue later in case your internet connection goes down.
+WP Batch Processing is WordPress plugin for creating batches of data and processing the data items one by one. It allows you to define a batch and to process the queued batch items one by one. There is also option to resume/continue later in case your internet connection goes down.
 
 ![Example](examples/processing.gif)
 
+## Installation
+
+You can install this library as a plugin
+
+or via composer:
+
+```
+composer require gdarko/wp-batch-processing
+```
+
+**Note/Optional**: The plugin should be able to find its public path, however if you see messed up screen it means that it was unable to find the stylesheet/JS file and you will need to define them manually before including composer's autoload.php file.
+
+```php
+if ( ! defined('WP_BP_PATH')) {
+    define('WP_BP_PATH', plugin_dir_path(__FILE__));
+}
+
+if ( ! defined('WP_BP_URL')) {
+    define('WP_BP_URL', plugin_dir_url(__FILE__));
+}
+
+// Before this statement.
+require_once 'vendor/autoload.php';
+
+```
+
+
+## How it works
+
 To define a batch you just need to extend the class `WP_Batch` and later register it. Follow  the examples below to learn how.
 
 The class provides the following attributes and methods 
@@ -111,7 +140,7 @@ add_action( 'wp_batch_processing_init', 'wp_batch_processing_init', 15, 1 );
 
 That's it.
 
-## Hooks
+## Filters and Actions
 
 Set delay between processing items. Default is 0 (no delay)
 ```php
@@ -141,7 +170,7 @@ If you notice a bug or you want to propose improvements feel free to create a pu
 The plugin is licensed under GPL v2
 
 ```
-Copyright (C) 2019 Darko Gjorgjijoski (https://darkog.com)
+Copyright (C) 2021 Darko Gjorgjijoski (https://darkog.com)
 
 This file is part of WP Batch Processing
 
@@ -157,4 +186,4 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with WP Batch Processing. If not, see <https://www.gnu.org/licenses/>.
-```
+```

composer.json

@@ -0,0 +1,20 @@
+{
+  "name": "gdarko/wp-batch-processing",
+  "description": "Easily process large batches of data in WordPress. Provide the data, setup the processing procedure, run the batch processor from the admin dashboard. Profit.",
+  "type": "library",
+  "require": {
+    "php": ">=5.3"
+  },
+  "license": "GPL-2.0-or-later",
+  "authors": [
+    {
+      "name": "Darko Gjorgjijoski",
+      "email": "dg@darkog.com"
+    }
+  ],
+  "autoload": {
+    "classmap": [
+      "includes/"
+    ]
+  }
+}

includes/class-batch-processor-admin.php

@@ -35,6 +35,9 @@ class WP_Batch_Processor_Admin {
 	 * Kick-in the class
 	 */
 	protected function init() {
+
+		$this->load_paths();
+
 		add_action( 'admin_menu', array( $this, 'admin_menu' ) );
 		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
 		add_action( 'init', array( $this, 'setup' ), 0 );
@@ -71,7 +74,8 @@ public function enqueue_scripts() {
 			'ajax_url' => admin_url( 'admin-ajax.php' ),
 			'nonce'    => wp_create_nonce( 'wp-batch-processing' ),
 			'batch_id' => isset( $_GET['id'] ) ? $_GET['id'] : 0,
-			'delay'    => apply_filters( 'wp_batch_processing_delay', 0 ), // Set delay in seconds before processing the next item. Default 0. No delay.
+			'delay'    => apply_filters( 'wp_batch_processing_delay', 0 ),
+			// Set delay in seconds before processing the next item. Default 0. No delay.
 			'text'     => array(
 				'processing' => __( 'Processing...', 'wp-batch-processing' ),
 				'start'      => __( 'Start', 'wp-batch-processing' ),
@@ -138,11 +142,31 @@ private function is_batch_runner_ajax() {
 	private function is_batch_runner_screen( $action = null ) {
 		$is_main_screen = isset( $_GET['page'] ) && $_GET['page'] === 'dg-batches';
 		if ( ! is_null( $action ) ) {
-			$is_main_screen = $is_main_screen && isset($_GET['action']) && $_GET['action'] === $action;
+			$is_main_screen = $is_main_screen && isset( $_GET['action'] ) && $_GET['action'] === $action;
 		}
 
 		return $is_main_screen;
 	}
+
+	/**
+	 * Determine the library URL.
+	 * Note: This won't work if the library is outside of the wp-content directory
+	 * and also contains multiple 'wp-content' words in the path.
+	 */
+	private function load_paths() {
+		if ( ! defined( 'WP_BP_PATH' ) || ! defined( 'WP_BP_URL' ) ) {
+			$path        = trailingslashit( dirname( __FILE__ ) );
+			$content_dir = basename( untrailingslashit( WP_CONTENT_DIR ) );
+			$library_uri = substr( strstr( trailingslashit( dirname( $path ) ), $content_dir ), strlen( $content_dir ) );
+			$url         = untrailingslashit( WP_CONTENT_URL ) . $library_uri;
+			if ( ! defined( 'WP_BP_PATH' ) ) {
+				define( 'WP_BP_PATH', $path );
+			}
+			if ( ! defined( 'WP_BP_URL' ) ) {
+				define( 'WP_BP_URL', trailingslashit( $url ) );
+			}
+		}
+	}
 }
 
 WP_Batch_Processor_Admin::get_instance();

wp-batch-processing.php

@@ -3,23 +3,28 @@
 Plugin Name: WP Batch Processing
 Plugin URI: https://github.com/gdarko/wp-batch-processing
 Description: Batch Processing for WordPress. Imagine you have to send custom emails to a lots of users based on some kind of logic. This plugin makes batch tasks easy.
-Version: 1.0.1
+Version: 1.1.0
 Author: Darko Gjorgjijoski
 Author URI: https://darkog.com
 License: GPL-2+
 License URI: http://www.gnu.org/licenses/gpl-2.0.txt
 */
 
-if ( ! defined( 'ABSPATH' ) ) {
-	die;
+if ( ! defined('ABSPATH')) {
+    die;
 }
 
-if ( ! is_admin() ) {
-	return;
+if ( ! is_admin()) {
+    return;
 }
 
-define( 'WP_BP_PATH', plugin_dir_path( __FILE__ ) );
-define( 'WP_BP_URL', plugin_dir_url( __FILE__ ) );
+if ( ! defined('WP_BP_PATH')) {
+    define('WP_BP_PATH', plugin_dir_path(__FILE__));
+}
+
+if ( ! defined('WP_BP_URL')) {
+    define('WP_BP_URL', plugin_dir_url(__FILE__));
+}
 
 require_once 'includes/class-bp-helper.php';
 require_once 'includes/class-bp-singleton.php';
@@ -31,4 +36,4 @@
 require_once 'includes/class-batch-processor-admin.php';
 
 // Examples
-// require_once 'examples/class-example-batch.php';
+// require_once 'examples/class-example-batch.php';