<?php
declare( strict_types=1 );
namespace Automattic\WooCommerce\Internal\EmailEditor\WCTransactionalEmails;
use Automattic\Jetpack\Constants;
use Automattic\WooCommerce\Internal\EmailEditor\Integration;
use Automattic\WooCommerce\Internal\EmailEditor\EmailTemplates\WooEmailTemplate;
use Automattic\WooCommerce\Utilities\StringUtil;
/**
* Class WCTransactionalEmailPostsGenerator
*
* Handles the generation of WooCommerce transactional email templates.
* This class is responsible for initializing and managing default email templates,
* as well as generating new templates when required.
*
* @package Automattic\WooCommerce\Internal\EmailEditor\WCTransactionalEmails
*/
class WCTransactionalEmailPostsGenerator {
/**
* WooCommerce Email Template Manager instance.
*
* @var WCTransactionalEmailPostsManager
*/
private $template_manager;
/**
* Default templates.
*
* @var array<string, \WC_Email>
*/
private $default_templates = array();
/**
* Transient name.
*
* @var string
*/
private $transient_name = 'wc_email_editor_initial_templates_generated';
/**
* Constructor.
*
* Initializes the WCTransactionalEmailPostsGenerator by setting up the template manager.
*/
public function __construct() {
$this->template_manager = WCTransactionalEmailPostsManager::get_instance();
}
/**
* Initialize the email template generator.
*
* This function initializes the email template generator by loading the default templates
* and generating initial email templates if needed.
*
* @internal
*/
public function initialize() {
if ( Constants::get_constant( 'WC_VERSION' ) === get_transient( $this->transient_name ) ) {
// if templates are already generated, we don't need to run this function again.
return true;
}
$this->init_default_transactional_emails();
$this->generate_initial_email_templates();
}
/**
* Initialize the default WooCommerce Transactional Emails.
*
* This function initializes the default templates for the core transactional emails.
* It fetches all the emails from WooCommerce and filters them to include only the core transactional emails.
*/
public function init_default_transactional_emails() {
$core_transactional_emails = WCTransactionalEmails::get_transactional_emails();
$wc_emails = \WC_Emails::instance();
/**
* WooCommerce Transactional Emails instance.
*
* @var \WC_Email[]
*/
$email_types = $wc_emails->get_emails();
// Filter the emails to include only the core transactional emails.
$email_types = array_filter(
$email_types,
function ( $email ) use ( $core_transactional_emails ) {
return in_array( $email->id, $core_transactional_emails, true );
}
);
$this->default_templates = array_reduce(
$email_types,
function ( $acc, $email ) {
$acc[ $email->id ] = $email;
return $acc;
},
array()
);
}
/**
* Get the email template for the given email.
*
* Looks for the initial email block content in plugins/woocommerce/templates/emails/block.
*
* @param \WC_Email $email The email object.
* @return string The email template.
*/
public function get_email_template( $email ) {
$template_name = str_replace( 'plain', 'block', $email->template_plain );
try {
$template_html = wc_get_template_html(
$template_name,
array()
);
} catch ( \Exception $e ) {
$template_html = '';
}
// wc_get_template_html does not throw an error when the template is not found.
// We need to check if the template is not found by checking the template_html content.
$has_template_error =
StringUtil::contains( $template_html, 'No such file or directory', false ) ||
StringUtil::contains( $template_html, 'Failed to open stream', false ) ||
StringUtil::contains( $template_html, 'Warning: include', false );
if ( is_wp_error( $template_html ) || empty( $template_html ) || $has_template_error ) {
$default_template_name = 'emails/block/default-block-content.php';
$template_html = wc_get_template_html(
$default_template_name,
array()
);
}
return $template_html;
}
/**
* Generate initial email templates.
*
* This function generates the initial email templates for the core transactional emails.
* It checks if the templates are already generated and if not, it generates them.
*
* @return bool True if the templates are generated, false otherwise.
*/
public function generate_initial_email_templates() {
$core_transactional_emails = WCTransactionalEmails::get_transactional_emails();
$templates_to_generate = array();
foreach ( $core_transactional_emails as $email_type ) {
if ( empty( $this->template_manager->get_email_template_post_id( $email_type ) ) ) {
$templates_to_generate[] = $email_type;
}
}
if ( empty( $templates_to_generate ) ) {
return;
}
$result = $this->generate_email_templates( $templates_to_generate );
if ( is_wp_error( $result ) ) {
return false;
}
set_transient( $this->transient_name, Constants::get_constant( 'WC_VERSION' ), MONTH_IN_SECONDS );
return true;
}
/**
* Generate email template if it doesn't exist.
*
* This function generates an email template if it doesn't exist.
*
* @param string $email_type The email type.
* @return int The post ID of the generated template.
* @throws \Exception When post creation fails.
*/
public function generate_email_template_if_not_exists( $email_type ) {
$email_data = $this->default_templates[ $email_type ];
if ( $this->template_manager->get_email_template_post_id( $email_type ) || empty( $email_data ) ) {
return $this->template_manager->get_email_template_post_id( $email_type );
}
return $this->generate_single_template( $email_type, $email_data );
}
/**
* Generate email templates.
*
* This function generates the email templates for the given email types.
*
* @param array $templates_to_generate The email types to generate.
*/
public function generate_email_templates( $templates_to_generate ) {
global $wpdb;
$core_emails = array_filter(
$this->default_templates,
function ( $email_id ) use ( $templates_to_generate ) {
return in_array( $email_id, $templates_to_generate, true );
},
ARRAY_FILTER_USE_KEY
);
if ( empty( $core_emails ) ) {
return false;
}
// Start transaction.
$wpdb->query( 'START TRANSACTION' );
try {
foreach ( $core_emails as $email_type => $email_data ) {
$this->generate_single_template( $email_type, $email_data );
}
$wpdb->query( 'COMMIT' );
return true;
} catch ( \Exception $e ) {
$wpdb->query( 'ROLLBACK' );
return new \WP_Error( 'email_generation_failed', $e->getMessage() );
}
}
/**
* Generate a single email template.
*
* This function generates a single email template post and sets its postmeta association.
*
* @param string $email_type The email type.
* @param \WC_Email $email_data The transactional email data.
* @return int The post ID of the generated template.
* @throws \Exception When post creation fails.
*/
private function generate_single_template( $email_type, $email_data ) {
$email_enabled = $email_data->is_enabled() || $email_data->is_manual();
$post_data = array(
'post_type' => Integration::EMAIL_POST_TYPE,
'post_status' => $email_enabled ? 'publish' : 'draft',
'post_name' => $email_type,
'post_title' => $email_data->get_title(),
'post_excerpt' => $email_data->get_description(),
'post_content' => $this->get_email_template( $email_data ),
'meta_input' => array(
'_wp_page_template' => ( new WooEmailTemplate() )->get_slug(),
),
);
$post_id = wp_insert_post( $post_data, true );
if ( is_wp_error( $post_id ) ) {
throw new \Exception( esc_html( $post_id->get_error_message() ) );
}
$this->template_manager->save_email_template_post_id( $email_type, $post_id );
return $post_id;
}
}