Lesson 13

Lesson13/alecaddd-plugin.php

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+<?php
+/**
+ * @package  AlecadddPlugin
+ */
+/*
+Plugin Name: Alecaddd Plugin
+Plugin URI: http://alecaddd.com/plugin
+Description: This is my first attempt on writing a custom Plugin for this amazing tutorial series.
+Version: 1.0.0
+Author: Alessandro "Alecaddd" Castellani
+Author URI: http://alecaddd.com
+License: GPLv2 or later
+Text Domain: alecaddd-plugin
+*/
+
+/*
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+Copyright 2005-2015 Automattic, Inc.
+*/
+
+// If this file is called firectly, abort!!!
+defined( 'ABSPATH' ) or die( 'Hey, what are you doing here? You silly human!' );
+
+// Require once the Composer Autoload
+if ( file_exists( dirname( __FILE__ ) . '/vendor/autoload.php' ) ) {
+	require_once dirname( __FILE__ ) . '/vendor/autoload.php';
+}
+
+/**
+ * The code that runs during plugin activation
+ */
+function activate_alecaddd_plugin() {
+	Inc\Base\Activate::activate();
+}
+register_activation_hook( __FILE__, 'activate_alecaddd_plugin' );
+
+/**
+ * The code that runs during plugin deactivation
+ */
+function deactivate_alecaddd_plugin() {
+	Inc\Base\Deactivate::deactivate();
+}
+register_deactivation_hook( __FILE__, 'deactivate_alecaddd_plugin' );
+
+/**
+ * Initialize all the core classes of the plugin
+ */
+if ( class_exists( 'Inc\\Init' ) ) {
+	Inc\Init::register_services();
+}

Lesson13/composer.json

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+{
+    "name": "alecaddd/alecaddd-plugin",
+    "description": "Awesome starter plugin example",
+    "type": "project",
+    "license": "GPL",
+    "authors": [
+        {
+            "name": "Alecaddd",
+            "email": "castellani.ale@gmail.com"
+        }
+    ],
+    "minimum-stability": "dev",
+    "require": {},
+    "autoload": {
+        "psr-4": {"Inc\\": "./inc"}
+    }
+}

Lesson13/inc/Base/Activate.php

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+<?php
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Base;
+
+class Activate
+{
+	public static function activate() {
+		flush_rewrite_rules();
+	}
+}

Lesson13/inc/Base/BaseController.php

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+<?php 
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Base;
+
+class BaseController
+{
+	public $plugin_path;
+
+	public $plugin_url;
+
+	public $plugin;
+
+	public function __construct() {
+		$this->plugin_path = plugin_dir_path( dirname( __FILE__, 2 ) );
+		$this->plugin_url = plugin_dir_url( dirname( __FILE__, 2 ) );
+		$this->plugin = plugin_basename( dirname( __FILE__, 3 ) ) . '/alecaddd-plugin.php';
+	}
+}

Lesson13/inc/Base/Deactivate.php

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+<?php
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Base;
+
+class Deactivate
+{
+	public static function deactivate() {
+		flush_rewrite_rules();
+	}
+}

Lesson13/inc/Base/Enqueue.php

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+<?php 
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Base;
+
+use \Inc\Base\BaseController;
+
+/**
+* 
+*/
+class Enqueue extends BaseController
+{
+	public function register() {
+		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue' ) );
+	}
+
+	function enqueue() {
+		// enqueue all our scripts
+		wp_enqueue_style( 'mypluginstyle', $this->plugin_url . 'assets/mystyle.css' );
+		wp_enqueue_script( 'mypluginscript', $this->plugin_url . 'assets/myscript.js' );
+	}
+}

Lesson13/inc/Base/SettingsLinks.php

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+<?php
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Base;
+
+use \Inc\Base\BaseController;
+
+class SettingsLinks extends BaseController
+{
+	public function register() 
+	{
+		add_filter( "plugin_action_links_$this->plugin", array( $this, 'settings_link' ) );
+	}
+
+	public function settings_link( $links ) 
+	{
+		$settings_link = '<a href="admin.php?page=alecaddd_plugin">Settings</a>';
+		array_push( $links, $settings_link );
+		return $links;
+	}
+}

Lesson13/inc/Init.php

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+<?php
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc;
+
+final class Init
+{
+	/**
+	 * Store all the classes inside an array
+	 * @return array Full list of classes
+	 */
+	public static function get_services() 
+	{
+		return [
+			Pages\Admin::class,
+			Base\Enqueue::class,
+			Base\SettingsLinks::class
+		];
+	}
+
+	/**
+	 * Loop through the classes, initialize them, 
+	 * and call the register() method if it exists
+	 * @return
+	 */
+	public static function register_services() 
+	{
+		foreach ( self::get_services() as $class ) {
+			$service = self::instantiate( $class );
+			if ( method_exists( $service, 'register' ) ) {
+				$service->register();
+			}
+		}
+	}
+
+	/**
+	 * Initialize the class
+	 * @param  class $class    class from the services array
+	 * @return class instance  new instance of the class
+	 */
+	private static function instantiate( $class )
+	{
+		$service = new $class();
+
+		return $service;
+	}
+}

Lesson13/inc/Pages/Admin.php

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+<?php 
+/**
+ * @package  AlecadddPlugin
+ */
+namespace Inc\Pages;
+
+use \Inc\Base\BaseController;
+
+/**
+* 
+*/
+class Admin extends BaseController
+{
+	public function register() {
+		add_action( 'admin_menu', array( $this, 'add_admin_pages' ) );
+	}
+
+	public function add_admin_pages() {
+		add_menu_page( 'Alecaddd Plugin', 'Alecaddd', 'manage_options', 'alecaddd_plugin', array( $this, 'admin_index' ), 'dashicons-store', 110 );
+	}
+
+	public function admin_index() {
+		require_once $this->plugin_path . 'templates/admin.php';
+	}
+}

Lesson13/index.php

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+<?php
+// Silence is golden.

Lesson13/templates/admin.php

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+<h1>Alecaddd Plugin</h1>

Lesson13/uninstall.php

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+<?php
+
+/**
+ * Trigger this file on Plugin uninstall
+ *
+ * @package  AlecadddPlugin
+ */
+
+if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+	die;
+}
+
+// Clear Database stored data
+$books = get_posts( array( 'post_type' => 'book', 'numberposts' => -1 ) );
+
+foreach( $books as $book ) {
+	wp_delete_post( $book->ID, true );
+}
+
+// Access the database via SQL
+global $wpdb;
+$wpdb->query( "DELETE FROM wp_posts WHERE post_type = 'book'" );
+$wpdb->query( "DELETE FROM wp_postmeta WHERE post_id NOT IN (SELECT id FROM wp_posts)" );
+$wpdb->query( "DELETE FROM wp_term_relationships WHERE object_id NOT IN (SELECT id FROM wp_posts)" );

Lesson13/vendor/autoload.php

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+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInit51b523f56e298134d109fbc73bbc4aba::getLoader();