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<?php
namespace WPForms\Emails;
use WPForms\Emails\Templates\General;
/**
* Mailer class to wrap wp_mail().
*
* @since 1.5.4
*/
class Mailer {
/**
* Array or comma-separated list of email addresses to send message.
*
* @since 1.5.4
*
* @var string|string[]
*/
private $to_email;
/**
* CC addresses (comma delimited).
*
* @since 1.5.4
*
* @var string
*/
private $cc;
/**
* From address.
*
* @since 1.5.4
*
* @var string
*/
private $from_address;
/**
* From name.
*
* @since 1.5.4
*
* @var string
*/
private $from_name;
/**
* Reply to address.
*
* @since 1.5.4
*
* @var string
*/
private $reply_to;
/**
* Email headers.
*
* @since 1.5.4
*
* @var string
*/
private $headers;
/**
* Email content type.
*
* @since 1.5.4
*
* @var string
*/
private $content_type;
/**
* Email attachments.
*
* @since 1.5.4
*
* @var string|string[]
*/
private $attachments;
/**
* Email subject.
*
* @since 1.5.4
*
* @var string
*/
private $subject;
/**
* Email message.
*
* @since 1.5.4
*
* @var string
*/
private $message;
/**
* Email template.
*
* @since 1.5.4
*
* @var General
*/
private $template;
/**
* Set a property.
*
* @since 1.5.4
*
* @param string $key Property name.
* @param string $value Property value.
*/
public function __set( $key, $value ) {
$this->$key = $value;
}
/**
* Get a property.
*
* @since 1.5.4
*
* @param string $key Property name.
*
* @return string
*/
public function __get( $key ) {
return $this->$key;
}
/**
* Check if a property exists.
*
* @since 1.5.4
*
* @param string $key Property name.
*
* @return bool
*/
public function __isset( $key ) {
return isset( $this->key );
}
/**
* Unset a property.
*
* @since 1.5.4
*
* @param string $key Property name.
*/
public function __unset( $key ) {
unset( $this->key );
}
/**
* Email kill switch if needed.
*
* @since 1.5.4
*
* @return bool
*/
public function is_email_disabled() {
return (bool) \apply_filters( 'wpforms_emails_mailer_is_email_disabled', false, $this );
}
/**
* Sanitize the string.
*
* @uses \wpforms_decode_string()
*
* @since 1.5.4
* @since 1.6.0 Deprecated param: $linebreaks. This is handled by wpforms_decode_string().
*
* @param string $string String that may contain tags.
*
* @return string
*/
public function sanitize( $string = '' ) {
return \wpforms_decode_string( $string );
}
/**
* Get the email from name.
*
* @since 1.5.4
*
* @return string
*/
public function get_from_name() {
$this->from_name = $this->from_name ? $this->sanitize( $this->from_name ) : \get_bloginfo( 'name' );
return \apply_filters( 'wpforms_emails_mailer_get_from_name', $this->from_name, $this );
}
/**
* Get the email from address.
*
* @since 1.5.4
*
* @return string
*/
public function get_from_address() {
$this->from_address = $this->from_address ? $this->sanitize( $this->from_address ) : \get_option( 'admin_email' );
return \apply_filters( 'wpforms_emails_mailer_get_from_address', $this->from_address, $this );
}
/**
* Get the email reply to address.
*
* @since 1.5.4
*
* @return string
*/
public function get_reply_to_address() {
if ( empty( $this->reply_to ) || ! \is_email( $this->reply_to ) ) {
$this->reply_to = $this->from_address;
}
$this->reply_to = $this->sanitize( $this->reply_to );
if ( empty( $this->reply_to ) || ! \is_email( $this->reply_to ) ) {
$this->reply_to = \get_option( 'admin_email' );
}
return \apply_filters( 'wpforms_emails_mailer_get_reply_to_address', $this->reply_to, $this );
}
/**
* Get the email carbon copy addresses.
*
* @since 1.5.4
* @since 1.8.9 Allow using CC field as an array.
*
* @return string The email carbon copy addresses.
*/
public function get_cc_address() {
if ( is_array( $this->cc ) ) {
$this->cc = implode( ',', $this->cc );
}
if ( empty( $this->cc ) ) {
/**
* Filters the email carbon copy addresses.
*
* @since 1.5.4
*
* @param string $cc Carbon copy addresses.
* @param Mailer $this Mailer instance.
*/
return apply_filters( 'wpforms_emails_mailer_get_cc_address', $this->cc, $this );
}
$this->cc = $this->sanitize( $this->cc );
$addresses = array_filter( array_map( 'sanitize_email', explode( ',', $this->cc ) ) );
$this->cc = implode( ',', $addresses );
/** This filter is documented in src/Emails/Mailer.php. */
return apply_filters( 'wpforms_emails_mailer_get_cc_address', $this->cc, $this );
}
/**
* Get the email content type.
*
* @since 1.5.4
*
* @return string The email content type.
*/
public function get_content_type() {
$is_html = ! Helpers::is_plain_text_template();
if ( ! $this->content_type && $is_html ) {
$this->content_type = \apply_filters( 'wpforms_emails_mailer_get_content_type_default', 'text/html', $this );
} elseif ( ! $is_html ) {
$this->content_type = 'text/plain';
}
return \apply_filters( 'wpforms_emails_mailer_get_content_type', $this->content_type, $this );
}
/**
* Get the email subject.
*
* @since 1.8.9
*
* @return string The email subject.
*/
private function get_subject() {
if ( empty( $this->subject ) ) {
$this->subject = __( 'New Email Submit', 'wpforms-lite' );
}
/**
* Filters the email subject.
*
* @since 1.8.9
*
* @param string $subject Email subject.
* @param Mailer $this Mailer instance.
*/
return apply_filters( 'wpforms_emails_mailer_get_subject', $this->subject, $this );
}
/**
* Get the email message.
*
* @since 1.5.4
*
* @return string The email message.
*/
public function get_message() {
if ( empty( $this->message ) && ! empty( $this->template ) ) {
$this->message = $this->template->get();
}
return \apply_filters( 'wpforms_emails_mailer_get_message', $this->message, $this );
}
/**
* Get the email headers.
*
* @since 1.5.4
*
* @return string The email headers.
*/
public function get_headers() {
if ( $this->headers ) {
return \apply_filters( 'wpforms_emails_mailer_get_headers', $this->headers, $this );
}
$this->headers = "From: {$this->get_from_name()} <{$this->get_from_address()}>\r\n";
if ( $this->get_reply_to_address() ) {
$this->headers .= "Reply-To: {$this->get_reply_to_address()}\r\n";
}
if ( $this->get_cc_address() ) {
$this->headers .= "Cc: {$this->get_cc_address()}\r\n";
}
$this->headers .= "Content-Type: {$this->get_content_type()}; charset=utf-8\r\n";
return \apply_filters( 'wpforms_emails_mailer_get_headers', $this->headers, $this );
}
/**
* Get the email attachments.
*
* @since 1.5.4
*
* @return string|string[]
*/
public function get_attachments() {
if ( $this->attachments === null ) {
$this->attachments = [];
}
/**
* Filters the email attachments.
*
* @since 1.5.4
*
* @param string|string[] $attachments Array or string with attachment paths.
* @param Mailer $this Mailer instance.
*/
return apply_filters( 'wpforms_emails_mailer_get_attachments', $this->attachments, $this );
}
/**
* Set email address to send to.
*
* @since 1.5.4
*
* @param string|string[] $email Array or comma-separated list of email addresses to send message.
*
* @return Mailer
*/
public function to_email( $email ) {
if ( is_string( $email ) ) {
$email = explode( ',', $email );
}
$this->to_email = \apply_filters( 'wpforms_emails_mailer_to_email', $email, $this );
return $this;
}
/**
* Set email subject.
*
* @since 1.5.4
*
* @param string $subject Email subject.
*
* @return Mailer
*/
public function subject( $subject ) {
$subject = $this->sanitize( $subject );
$this->subject = \apply_filters( 'wpforms_emails_mailer_subject', $subject, $this );
return $this;
}
/**
* Set email message (body).
*
* @since 1.5.4
*
* @param string $message Email message.
*
* @return Mailer
*/
public function message( $message ) {
$this->message = \apply_filters( 'wpforms_emails_mailer_message', $message, $this );
return $this;
}
/**
* Set email template.
*
* @since 1.5.4
*
* @param General $template Email template.
*
* @return Mailer
*/
public function template( General $template ) {
$this->template = \apply_filters( 'wpforms_emails_mailer_template', $template, $this );
return $this;
}
/**
* Get email errors.
*
* @since 1.5.4
*
* @return array
*/
protected function get_errors() {
$errors = [];
foreach ( (array) $this->to_email as $email ) {
if ( ! is_email( $email ) ) {
$errors[] = sprintf( /* translators: %1$s - namespaced class name, %2$s - invalid email. */
esc_html__( '%1$s Invalid email address %2$s.', 'wpforms-lite' ),
'[WPForms\Emails\Mailer]',
$email
);
}
}
if ( empty( $this->get_subject() ) ) {
$errors[] = sprintf( /* translators: %s - namespaced class name. */
esc_html__( '%s Empty subject line.', 'wpforms-lite' ),
'[WPForms\Emails\Mailer]'
);
}
if ( empty( $this->get_message() ) ) {
$errors[] = sprintf( /* translators: %s - namespaced class name. */
esc_html__( '%s Empty message.', 'wpforms-lite' ),
'[WPForms\Emails\Mailer]'
);
}
return $errors;
}
/**
* Log given email errors.
*
* @since 1.5.4
*
* @param array $errors Errors to log.
*/
protected function log_errors( $errors ) {
if ( empty( $errors ) || ! \is_array( $errors ) ) {
return;
}
foreach ( $errors as $error ) {
\wpforms_log(
$error,
[
'to_email' => $this->to_email,
'subject' => $this->subject,
'message' => \wp_trim_words( $this->get_message() ),
],
[
'type' => 'error',
]
);
}
}
/**
* Send the email.
*
* @since 1.5.4
*
* @return bool
*/
public function send() {
if ( ! \did_action( 'init' ) && ! \did_action( 'admin_init' ) ) {
\_doing_it_wrong( __FUNCTION__, \esc_html__( 'You cannot send emails with WPForms\Emails\Mailer until init/admin_init has been reached.', 'wpforms-lite' ), null );
return false;
}
// Don't send anything if emails have been disabled.
if ( $this->is_email_disabled() ) {
return false;
}
$errors = $this->get_errors();
if ( $errors ) {
$this->log_errors( $errors );
return false;
}
$this->send_before();
$sent = \wp_mail(
$this->to_email,
$this->get_subject(),
$this->get_message(),
$this->get_headers(),
$this->get_attachments()
);
$this->send_after();
return $sent;
}
/**
* Add filters / actions before the email is sent.
*
* @since 1.5.4
*/
public function send_before() {
do_action( 'wpforms_emails_mailer_send_before', $this );
add_filter( 'wp_mail_from', [ $this, 'get_from_address' ] );
add_filter( 'wp_mail_from_name', [ $this, 'get_from_name' ] );
add_filter( 'wp_mail_content_type', [ $this, 'get_content_type' ] );
}
/**
* Remove filters / actions after the email is sent.
*
* @since 1.5.4
*/
public function send_after() {
do_action( 'wpforms_emails_mailer_send_after', $this );
remove_filter( 'wp_mail_from', [ $this, 'get_from_address' ] );
remove_filter( 'wp_mail_from_name', [ $this, 'get_from_name' ] );
remove_filter( 'wp_mail_content_type', [ $this, 'get_content_type' ] );
}
}
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