class-activation.php

<?php
namespace FooPlugins\Generator;

/**
 * FooPlugins Generator Activation Class
 * Contains the activate method that runs on register_activation_hook
 *
 * Date: 16/09/2019
 */

if ( !class_exists( 'FooPlugins\Generator\Activation' ) ) {

	class Activation {

		/**
		 * Fired when the plugin is activated.
		 *
		 * @since    2.0.2
		 *
		 * @param    boolean $network_wide       True if WPMU superadmin uses
		 *                                       "Network Activate" action, false if
		 *                                       WPMU is disabled or plugin is
		 *                                       activated on an individual blog.
		 */
		public static function activate( $network_wide ) {
			$plugin_data = get_site_option( FOOGEN_OPTION_DATA );
			$save_data     = false;
			if ( false === $plugin_data ) {
				$plugin_data = array(
					'version'       => FOOGEN_VERSION,
					'first_version' => FOOGEN_VERSION,
					'first_install' => time()
				);
				$save_data = true;
			} else {
				$version = $plugin_data['version'];

				if ( $version !== FOOGEN_VERSION ) {
					//the version has been updated

					$plugin_data['version'] = FOOGEN_VERSION;
					$save_data              = true;

					//store a transient for 1 min with the update info
					set_site_transient( FOOGEN_TRANSIENT_UPDATED, $plugin_data, 60 );
				}
			}

			if ( $save_data ) {
				update_site_option( FOOGEN_OPTION_DATA, $plugin_data );
			}

			if ( false === $network_wide ) {
				//make sure we redirect to the welcome wizard
				set_transient( FOOGEN_TRANSIENT_ACTIVATION_REDIRECT, true, 30 );
			}
		}
	}
}