<?php

namespace App\Mail;

use Swift_Events_SendEvent;
use Swift_Events_SendListener;

/**
 * Automatically adds the X-SES-CONFIGURATION-SET header to every outgoing email.
 * Registered once in AppServiceProvider — no changes needed at each Mail::send() call site.
 */
class SesConfigurationSetPlugin implements Swift_Events_SendListener
{
    /**
     * The SES Configuration Set name.
     *
     * @var string
     */
    protected $configurationSet;

    public function __construct(string $configurationSet)
    {
        $this->configurationSet = $configurationSet;
    }

    /**
     * Called before the message is sent — inject the header here.
     */
    public function beforeSendPerformed(Swift_Events_SendEvent $event): void
    {
        $message = $event->getMessage();
        $headers = $message->getHeaders();

        // Only add if not already set (avoids duplicates)
        if (!$headers->has('X-SES-CONFIGURATION-SET')) {
            $headers->addTextHeader('X-SES-CONFIGURATION-SET', $this->configurationSet);
        }
    }

    /**
     * Called after the message is sent — nothing to do here.
     */
    public function sendPerformed(Swift_Events_SendEvent $event): void
    {
        //
    }
}