[Membership] - Resend welcome e-mail

ms_resend_welcome_email.php

<?php
/**
* Plugin Name: [Membership] - Resend welcome e-mail
* Plugin URI: https://premium.wpmudev.org/
* Description: Allows to resend the Welcome email
* Author: Panos Lyrakis @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'WPMUDEV_MS_Resend_Welcome_Email' ) ) {

    class WPMUDEV_MS_Resend_Welcome_Email {

        private static $_instance 		= null;
        
		public static function get_instance() {

			if ( is_null( self::$_instance ) ) {
				self::$_instance = new WPMUDEV_MS_Resend_Welcome_Email();
			}

			return self::$_instance;
		}

		private function __construct() {

			add_action( 'wp_ajax_wpmudev_ms_resend_welcome_email', array( $this, 'resend_welcome_email' ), 20 );
			add_action( 'admin_footer', array( $this, 'admin_footer' ), 20 );
			add_filter( 'ms_view_member_editor_fields_edit', array( $this, 'filter_member_fields' ), 20 );

			add_action( 'show_user_profile', array( $this, 'additional_profile_fields' ) );
			add_action( 'edit_user_profile', array( $this, 'additional_profile_fields' ) );

		}

		public function resend_welcome_email() {

			check_ajax_referer( 'wpmudev_ms_resend_welcome_email', 'security' );

			$return = array(
		        'success' => false,
		    );

		    $user_id = isset( $_POST['user_id'] ) ? (int) $_POST['user_id'] : null;

		    if( ! is_null( $user_id ) ){

		    	// Since we will update user pass, WP will attempt to send a notification about pass change to user. Lets not send
		    	add_filter( 'send_password_change_email', '__return_false', 50 );

		    	$member 					= MS_Factory::load( 'MS_Model_Member', $user_id );		    	
		    	$comm 						= MS_Model_Communication::get_communication( MS_Model_Communication::COMM_TYPE_SIGNUP );
		    	$comm_vars 					= $comm->get_comm_vars( null, $member );
		    	$user_password 				= wp_generate_password();
		    	$comm_vars['%password%'] 	= $user_password;

		    	if ( ! wp_update_user( array( 'ID' => $user_id, 'user_pass' => $user_password ) ) ) {
		    		wp_send_json( $return );
		    	}

		    	$headers 		= array();
		    	$message 		= str_replace(
					array_keys( $comm_vars ),
					array_values( $comm_vars ),
					stripslashes( $comm->message )
				);

				$subject 		= str_replace(
					array_keys( $comm_vars ),
					array_values( $comm_vars ),
					stripslashes( $comm->subject )
				);
				$subject 		= strip_tags( $subject );
		    		
				$content_type 	= $comm->get_mail_content_type();
				$headers[] 		= sprintf(
					'Content-Type: %s; charset="UTF-8"',
					$content_type
				);

				// Pre-process the message according to content-type.
				if ( 'text/html' == $content_type ) {
					$message = wpautop( $message );
					$message = make_clickable( $message );
				} else {
					$message = preg_replace(
						'/\<a .*?href=["\'](.*?)["\'].*?\>(.*?)\<\/a\>/is',
						'$2 [$1]',
						$message
					);
					$message = strip_tags( $message );
				}

				$sent = wp_mail( $member->email, $subject, $message, $headers );

				if ( $sent ) {
					$return = array(
				        'success' => true,
				    );	
				}
		    	
		    }

		    wp_send_json($return);

		}

		public function admin_footer() {

			$screen = get_current_screen();

			if( ! isset( $screen->base ) || 
				( 'membership-2_page_membership2-add-member' != $screen->base && 'user-edit' != $screen->base )
			) {
				return;
			}

			?>
			<script type="text/javascript">
				(function(d,$){
					$(d).ready(function(){
						$('#resend_welcome_email').on('click', function(e){
							let me = $(this),
								user_id = me.data('member'),
								conf = confirm("Are you sure you want to resend the Weclome email?\n\nThis will create a new password for the user. The new password will be included in the email if it contains `%password%` in it's content");

							e.preventDefault();

							if ( ! conf ) {
								return;
							}

							let data = {
		                        action: 'wpmudev_ms_resend_welcome_email',
		                        security: '<?php echo wp_create_nonce( "wpmudev_ms_resend_welcome_email" ); ?>',
		                        user_id: user_id
		                    };

		                    $.post(ajaxurl, data, function(response) {
		                        
		                        if( response.success ){                            
		                            alert( 'Welcome message has been sent! A new Password has been created for user' );
		                        }
		                        else{
		                            alert( 'Error in request' );
		                        }
		                    });

						});
					});
				})(document,jQuery);
			</script>
			<?php

		}

		public function additional_profile_fields( $user ) {
			?>
			<h3>Resend Welcome Email</h3>

			<a id="resend_welcome_email" title="Resend Welcome email" class="wpmui-link button wpmui-field-input ms=welcome-email-resend" href="" target="_self" data-member="417"><i class="dashicons dashicons-email"></i>Resend Welcome email</a>

			<?php
		}

		public function filter_member_fields( $fields ) {

			foreach ( $fields as $field_key => $field_items ) {

				// We are targeting the subscription fields not member fields	
				if( isset( $field_items['username'] ) ) {
					continue;
				}

				$member_id = (int) $_GET['user_id'];

				$new_field_item = array(
					'id' 		=> 'resend_welcome_email',
					'type' 		=> 'html_link',
					'value' 	=> '<i class="dashicons dashicons-email"></i>Resend Welcome email',
					'class' 	=> 'button wpmui-field-input ms=welcome-email-resend',
					'config' 	=> array(
						'data-member' => $member_id
					)

				);
				
				$fields[$field_key][] = $new_field_item;

			}

			return $fields;

		}

	}

	if ( ! function_exists( 'wpmudev_ms_resend_welcome_email' ) ) {

		function wpmudev_ms_resend_welcome_email() {
			return WPMUDEV_MS_Resend_Welcome_Email::get_instance();
		}

		add_action( 'plugins_loaded', 'wpmudev_ms_resend_welcome_email', 10 );

	}

}

Adds a "Resend Welcome Email" in the Edit Member page and in Edit User.

It regenerates user password

It includes the password in the email if the email contains %password%

Requires the Additional Automated Messages addon