411 lines
8.4 KiB
PHP
411 lines
8.4 KiB
PHP
<?php
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namespace WPMailSMTP\Providers\Sendgrid;
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use WPMailSMTP\MailCatcherInterface;
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use WPMailSMTP\Providers\MailerAbstract;
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use WPMailSMTP\WP;
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/**
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* Class Mailer.
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*
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* @since 1.0.0
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*/
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class Mailer extends MailerAbstract {
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/**
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* Which response code from HTTP provider is considered to be successful?
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*
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* @since 1.0.0
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*
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* @var int
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*/
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protected $email_sent_code = 202;
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/**
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* URL to make an API request to.
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*
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* @since 1.0.0
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*
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* @var string
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*/
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protected $url = 'https://api.sendgrid.com/v3/mail/send';
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/**
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* Mailer constructor.
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*
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* @since 1.0.0
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*
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* @param MailCatcherInterface $phpmailer The MailCatcher object.
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*/
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public function __construct( $phpmailer ) {
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// We want to prefill everything from MailCatcher class, which extends PHPMailer.
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parent::__construct( $phpmailer );
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$this->set_header( 'Authorization', 'Bearer ' . $this->options->get( $this->mailer, 'api_key' ) );
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$this->set_header( 'content-type', 'application/json' );
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}
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/**
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* Redefine the way email body is returned.
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* By default we are sending an array of data.
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* SendGrid requires a JSON, so we encode the body.
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*
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* @since 1.0.0
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*/
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public function get_body() {
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$body = parent::get_body();
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return wp_json_encode( $body );
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}
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/**
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* @inheritdoc
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*/
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public function set_from( $email, $name = '' ) {
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if ( ! filter_var( $email, FILTER_VALIDATE_EMAIL ) ) {
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return;
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}
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$from['email'] = $email;
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if ( ! empty( $name ) ) {
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$from['name'] = $name;
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}
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$this->set_body_param(
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array(
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'from' => $from,
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)
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);
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}
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/**
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* @inheritdoc
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*/
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public function set_recipients( $recipients ) {
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if ( empty( $recipients ) ) {
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return;
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}
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// Allow for now only these recipient types.
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$default = array( 'to', 'cc', 'bcc' );
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$data = array();
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foreach ( $recipients as $type => $emails ) {
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if (
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! in_array( $type, $default, true ) ||
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empty( $emails ) ||
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! is_array( $emails )
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) {
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continue;
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}
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$data[ $type ] = array();
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// Iterate over all emails for each type.
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// There might be multiple cc/to/bcc emails.
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foreach ( $emails as $email ) {
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$holder = array();
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$addr = isset( $email[0] ) ? $email[0] : false;
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$name = isset( $email[1] ) ? $email[1] : false;
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if ( ! filter_var( $addr, FILTER_VALIDATE_EMAIL ) ) {
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continue;
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}
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$holder['email'] = $addr;
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if ( ! empty( $name ) ) {
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$holder['name'] = $name;
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}
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array_push( $data[ $type ], $holder );
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}
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}
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if ( ! empty( $data ) ) {
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$this->set_body_param(
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array(
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'personalizations' => array( $data ),
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)
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);
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}
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}
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/**
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* @inheritdoc
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*/
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public function set_content( $content ) {
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if ( empty( $content ) ) {
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return;
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}
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if ( is_array( $content ) ) {
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$default = array( 'text', 'html' );
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$data = array();
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foreach ( $content as $type => $body ) {
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if (
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! in_array( $type, $default, true ) ||
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empty( $body )
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) {
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continue;
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}
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$content_type = 'text/plain';
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$content_value = $body;
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if ( $type === 'html' ) {
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$content_type = 'text/html';
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}
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$data[] = array(
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'type' => $content_type,
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'value' => $content_value,
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);
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}
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$this->set_body_param(
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array(
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'content' => $data,
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)
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);
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} else {
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$data['type'] = 'text/html';
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$data['value'] = $content;
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if ( $this->phpmailer->ContentType === 'text/plain' ) {
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$data['type'] = 'text/plain';
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}
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$this->set_body_param(
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array(
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'content' => array( $data ),
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)
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);
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}
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}
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/**
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* Redefine the way custom headers are processed for this mailer - they should be in body.
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*
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* @since 1.5.0
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*
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* @param array $headers
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*/
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public function set_headers( $headers ) {
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foreach ( $headers as $header ) {
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$name = isset( $header[0] ) ? $header[0] : false;
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$value = isset( $header[1] ) ? $header[1] : false;
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$this->set_body_header( $name, $value );
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}
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// Add custom PHPMailer-specific header.
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$this->set_body_header( 'X-Mailer', 'WPMailSMTP/Mailer/' . $this->mailer . ' ' . WPMS_PLUGIN_VER );
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}
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/**
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* This mailer supports email-related custom headers inside a body of the message.
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*
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* @since 1.5.0
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*
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* @param string $name
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* @param string $value
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*/
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public function set_body_header( $name, $value ) {
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$name = sanitize_text_field( $name );
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if ( empty( $name ) ) {
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return;
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}
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$headers = isset( $this->body['headers'] ) ? (array) $this->body['headers'] : array();
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$headers[ $name ] = WP::sanitize_value( $value );
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$this->set_body_param(
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array(
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'headers' => $headers,
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)
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);
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}
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/**
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* SendGrid accepts an array of files content in body, so we will include all files and send.
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* Doesn't handle exceeding the limits etc, as this is done and reported by SendGrid API.
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*
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* @since 1.0.0
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*
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* @param array $attachments
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*/
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public function set_attachments( $attachments ) {
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if ( empty( $attachments ) ) {
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return;
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}
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$data = array();
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foreach ( $attachments as $attachment ) {
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$file = false;
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/*
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* We are not using WP_Filesystem API as we can't reliably work with it.
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* It is not always available, same as credentials for FTP.
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*/
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try {
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if ( is_file( $attachment[0] ) && is_readable( $attachment[0] ) ) {
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$file = file_get_contents( $attachment[0] ); // phpcs:ignore
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}
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}
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catch ( \Exception $e ) {
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$file = false;
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}
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if ( $file === false ) {
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continue;
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}
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$filetype = str_replace( ';', '', trim( $attachment[4] ) );
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$data[] = array(
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'content' => base64_encode( $file ), // string, 1 character.
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'type' => $filetype, // string, no ;, no CRLF.
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'filename' => empty( $attachment[2] ) ? 'file-' . wp_hash( microtime() ) . '.' . $filetype : trim( $attachment[2] ), // required string, no CRLF.
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'disposition' => in_array( $attachment[6], array( 'inline', 'attachment' ), true ) ? $attachment[6] : 'attachment', // either inline or attachment.
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'content_id' => empty( $attachment[7] ) ? '' : trim( (string) $attachment[7] ), // string, no CRLF.
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);
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}
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if ( ! empty( $data ) ) {
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$this->set_body_param(
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array(
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'attachments' => $data,
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)
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);
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}
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}
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/**
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* @inheritdoc
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*/
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public function set_reply_to( $reply_to ) {
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if ( empty( $reply_to ) ) {
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return;
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}
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$data = array();
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foreach ( $reply_to as $key => $emails ) {
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if (
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empty( $emails ) ||
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! is_array( $emails )
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) {
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continue;
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}
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$addr = isset( $emails[0] ) ? $emails[0] : false;
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$name = isset( $emails[1] ) ? $emails[1] : false;
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if ( ! filter_var( $addr, FILTER_VALIDATE_EMAIL ) ) {
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continue;
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}
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$data['email'] = $addr;
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if ( ! empty( $name ) ) {
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$data['name'] = $name;
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}
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}
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if ( ! empty( $data ) ) {
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$this->set_body_param(
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array(
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'reply_to' => $data,
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)
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);
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}
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}
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/**
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* SendGrid doesn't support sender or return_path params.
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* So we do nothing.
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*
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* @since 1.0.0
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*
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* @param string $from_email
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*/
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public function set_return_path( $from_email ) {}
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/**
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* Get a SendGrid-specific response with a helpful error.
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*
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* @since 1.2.0
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*
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* @return string
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*/
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protected function get_response_error() {
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$body = (array) wp_remote_retrieve_body( $this->response );
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$error_text = array();
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if ( ! empty( $body['errors'] ) ) {
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foreach ( $body['errors'] as $error ) {
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if ( property_exists( $error, 'message' ) ) {
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// Prepare additional information from SendGrid API.
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$extra = '';
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if ( property_exists( $error, 'field' ) && ! empty( $error->field ) ) {
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$extra .= $error->field . '; ';
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}
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if ( property_exists( $error, 'help' ) && ! empty( $error->help ) ) {
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$extra .= $error->help;
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}
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// Assign both the main message and perhaps extra information, if exists.
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$error_text[] = $error->message . ( ! empty( $extra ) ? ' - ' . $extra : '' );
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}
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}
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}
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return implode( '<br>', array_map( 'esc_textarea', $error_text ) );
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}
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/**
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* Get mailer debug information, that is helpful during support.
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*
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* @since 1.2.0
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*
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* @return string
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*/
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public function get_debug_info() {
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$sendgrid_text[] = '<strong>Api Key:</strong> ' . ( $this->is_mailer_complete() ? 'Yes' : 'No' );
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return implode( '<br>', $sendgrid_text );
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}
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/**
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* @inheritdoc
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*/
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public function is_mailer_complete() {
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$options = $this->options->get_group( $this->mailer );
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// API key is the only required option.
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if ( ! empty( $options['api_key'] ) ) {
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return true;
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}
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return false;
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}
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}
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