<?php
// Uncomment next line if you're not using a dependency loader (such as Composer)
// require_once '<PATH TO>/sendgrid-php.php';

use SendGrid\Mail\To;
use SendGrid\Mail\Cc;
use SendGrid\Mail\Bcc;
use SendGrid\Mail\From;
use SendGrid\Mail\Content;
use SendGrid\Mail\Mail;
use SendGrid\Mail\Personalization;
use SendGrid\Mail\Subject;
use SendGrid\Mail\Header;
use SendGrid\Mail\CustomArg;
use SendGrid\Mail\SendAt;
use SendGrid\Mail\Attachment;
use SendGrid\Mail\Asm;
use SendGrid\Mail\MailSettings;
use SendGrid\Mail\BccSettings;
use SendGrid\Mail\SandBoxMode;
use SendGrid\Mail\BypassListManagement;
use SendGrid\Mail\Footer;
use SendGrid\Mail\SpamCheck;
use SendGrid\Mail\TrackingSettings;
use SendGrid\Mail\ClickTracking;
use SendGrid\Mail\OpenTracking;
use SendGrid\Mail\SubscriptionTracking;
use SendGrid\Mail\Ganalytics;
use SendGrid\Mail\ReplyTo;

$apiKey = getenv('SENDGRID_API_KEY');
$sg = new \SendGrid($apiKey);

$mail = new Mail();

$personalization0 = new Personalization();
$personalization0->addTo(new To("john_doe@example.com", "John Doe"));
$personalization0->addTo(new To("julia_doe@example.com", "Julia Doe"));
$personalization0->addCc(new Cc("jane_doe@example.com", "Jane Doe"));
$personalization0->addBcc(new Bcc("james_doe@example.com", "Jim Doe"));
$mail->addPersonalization($personalization0);
$personalization1 = new Personalization();
$personalization1->setFrom(new From("sales@example.com", "Example Sales Team"));
$personalization1->addTo(new To("janice_doe@example.com", "Janice Doe"));
$personalization1->addBcc(new Bcc("jordan_doe@example.com", "Jordan Doe"));
$mail->addPersonalization($personalization1);

$mail->setFrom(new From("orders@example.com", "Example Order Confirmation"));

$mail->setReplyTo(new ReplyTo("customer_service@example.com", "Example Customer Service Team"));

$mail->setSubject(new Subject("Your Example Order Confirmation"));

$mail->addContent(new Content("text/html", "<p>Hello from Twilio SendGrid!</p><p>Sending with the email service trusted by developers and marketers for <strong>time-savings</strong>, <strong>scalability</strong>, and <strong>delivery expertise</strong>.</p><p>%open-track%</p>"));

$attachment0 = new Attachment();
$attachment0->setContent("PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KCiAgICA8aGVhZD4KICAgICAgICA8bWV0YSBjaGFyc2V0PSJVVEYtOCI+CiAgICAgICAgPG1ldGEgaHR0cC1lcXVpdj0iWC1VQS1Db21wYXRpYmxlIiBjb250ZW50PSJJRT1lZGdlIj4KICAgICAgICA8bWV0YSBuYW1lPSJ2aWV3cG9ydCIgY29udGVudD0id2lkdGg9ZGV2aWNlLXdpZHRoLCBpbml0aWFsLXNjYWxlPTEuMCI+CiAgICAgICAgPHRpdGxlPkRvY3VtZW50PC90aXRsZT4KICAgIDwvaGVhZD4KCiAgICA8Ym9keT4KCiAgICA8L2JvZHk+Cgo8L2h0bWw+Cg==");
$attachment0->setFilename("index.html");
$attachment0->setType("text/html");
$attachment0->setDisposition("attachment");
$mail->addAttachment($attachment0);

$mail->addCategory("cake");
$mail->addCategory("pie");
$mail->addCategory("baking");

$mail->setSendAt(new SendAt(1617260400));

$mail->setBatchId("AsdFgHjklQweRTYuIopzXcVBNm0aSDfGHjklmZcVbNMqWert1znmOP2asDFjkl");

$asm = new ASM();
$asm->setGroupId(12345);
$asm->setGroupsToDisplay([12345]);
$mail->setASM($asm);

$mail->setIpPoolName("transactional email");

$mail_settings = new MailSettings();
$bypass_list_management = new BypassListManagement();
$bypass_list_management->setEnable(false);
$mail_settings->setBypassListManagement($bypass_list_management);
$footer = new Footer();
$footer->setEnable(false);
$mail_settings->setFooter($footer);
$sandbox_mode = new SandboxMode();
$sandbox_mode->setEnable(false);
$mail_settings->setSandboxMode($sandbox_mode);
$mail->setMailSettings($mail_settings);

$tracking_settings = new TrackingSettings();
$click_tracking = new ClickTracking();
$click_tracking->setEnable(true);
$click_tracking->setEnableText(false);
$tracking_settings->setClickTracking($click_tracking);
$open_tracking = new OpenTracking();
$open_tracking->setEnable(true);
$open_tracking->setSubstitutionTag("%open-track%");
$tracking_settings->setOpenTracking($open_tracking);
$subscription_tracking = new SubscriptionTracking();
$subscription_tracking->setEnable(false);
$tracking_settings->setSubscriptionTracking($subscription_tracking);
$mail->setTrackingSettings($tracking_settings);

$request_body = $mail;

try {
    $response = $sg->client->mail()->send()->post($request_body);
    print $response->statusCode() . "\n";
    print_r($response->headers());
    print $response->body() . "\n";
} catch (Exception $ex) {
    echo 'Caught exception: '.  $ex->getMessage();
}