Check requirements and display error messages when needed

bea-acf-options-for-polylang.php

@@ -9,7 +9,22 @@
  Author URI: https://beapi.fr
  Contributors: Maxime Culea
  ----
- Copyright 2017 Be API Technical team ([email protected])
+
+ Copyright 2018 Be API Technical team ([email protected])
+
+ 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
@@ -28,30 +43,11 @@
 define( 'BEA_ACF_OPTIONS_MAIN_FILE_DIR', __FILE__ );
 define( 'BEA_ACF_OPTIONS_FOR_POLYLANG_PLUGIN_DIRNAME', basename( rtrim( dirname( __FILE__ ), '/' ) ) );
 
-// Check PHP min version
-if ( version_compare( PHP_VERSION, BEA_CPT_AGENT_MIN_PHP_VERSION, '<' ) ) {
-	require_once( BEA_CPT_AGENT_DIR . 'compat.php' );
-
-	// possibly display a notice, trigger error
-	add_action( 'admin_init', array( 'BEA\CPT_Agent\Compatibility', 'admin_init' ) );
-
-	// stop execution of this file
-	return;
-}
-
-/**
- * Autoload all the things \o/
- */
+/** Autoload all the things \o/ */
 require_once BEA_ACF_OPTIONS_FOR_POLYLANG_DIR . 'autoload.php';
 
-BEA\ACF_Options_For_Polylang\Plugin::get_instance();
+\BEA\ACF_Options_For_Polylang\Requirements::get_instance();
 
-/**
- * Load at plugins loaded to ensure ACF and Polylang are used
- *
- * @since  1.0.2
- * @author Maxime CULEA
- */
-add_action( 'plugins_loaded', function () {
+add_action( 'bea_acf_options_for_polylang_load', function () {
 	\BEA\ACF_Options_For_Polylang\Main::get_instance();
 } );

classes/requirements.php

@@ -0,0 +1,67 @@
+<?php namespace BEA\ACF_Options_For_Polylang;
+
+class Requirements {
+
+	use Singleton;
+
+	public $satsify_requiremeents = true;
+
+	/**
+	 * @since 1.0.0
+	 */
+	public function init() {
+		add_action( 'admin_init', [ $this, 'check_requirements' ] );
+	}
+
+	/**
+	 * All about requirements checks
+	 *
+	 * @return bool
+	 */
+	public function check_requirements() {
+		// Not on ajax
+		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
+			do_action( 'bea_acf_options_for_polylang_load' );
+			return true;
+		}
+
+		// Check activation
+		if ( ! current_user_can( 'activate_plugins' ) ) {
+			do_action( 'bea_acf_options_for_polylang_load' );
+			return true;
+		}
+
+		if ( version_compare( PHP_VERSION, BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, '<' ) ) {
+			$this->display_error( sprintf( __( 'Plugin Boilerplate require PHP version %s or greater to be activated. Your server is currently running PHP version %s.', 'bea-acf-options-for-polylang' ), BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, PHP_VERSION ) );
+			return false;
+		}
+
+		if ( ! function_exists( 'acf' ) || ! function_exists( 'pll_current_language' ) ) {
+			$this->display_error( __( 'Advanced Custom Fields and Polylang are required plugins.', 'bea-acf-options-for-polylang') );
+			return false;
+		}
+
+		if ( '5.6.0' > acf()->version ) {
+			$this->display_error( __( 'Advanced Custom Fields should be on version 5.6.0 or above.', 'bea-acf-options-for-polylang' ) );
+			return false;
+		};
+
+		do_action( 'bea_acf_options_for_polylang_load' );
+		return true;
+	}
+
+	// Display message and handle errors
+	public function display_error( $message ) {
+		$this->satsify_requiremeents = false;
+
+		trigger_error( $message );
+
+		add_action( 'admin_notices', function () use ($message) {
+			printf('<div class="notice error is-dismissible"><p>%s</p></div>', $message );
+		} );
+
+		// Deactive self
+		deactivate_plugins( BEA_ACF_OPTIONS_MAIN_FILE_DIR );
+		unset( $_GET['activate'] );
+	}
+}