<?php

declare(strict_types=1);

require_once dirname(__DIR__, 2) . '/feca_mailshots_plugin/src/autoload.php';

use FecaMailshots\Application\AttachmentService;
use FecaMailshots\Infrastructure\Env;
use FecaMailshots\Infrastructure\PdoDatabaseRouter;
use FecaMailshots\Repository\AttachmentRepository;

Env::load(dirname(__DIR__, 2) . '/credentials/.env');

$dbConfig = [
    'MYSQL_HOST' => '127.0.0.1',
    'MYSQL_PORT' => (string) (getenv('MYSQL_TUNNEL_LOCAL_PORT') ?: '13306'),
    'MYSQL_USER' => Env::require('REMOTE_MYSQL_USER'),
    'MYSQL_PASSWORD' => Env::require('REMOTE_MYSQL_PASSWORD'),
    'MAILSHOTS_REMOTE_MYSQL_DB' => Env::require('MAILSHOTS_REMOTE_MYSQL_DB'),
    'MEMBERS_REMOTE_MYSQL_DB' => Env::require('MEMBERS_REMOTE_MYSQL_DB'),
    'FEN_REMOTE_MYSQL_DB' => Env::require('FEN_REMOTE_MYSQL_DB'),
];

$router = new PdoDatabaseRouter($dbConfig);
$repo = new AttachmentRepository($router);
$service = new AttachmentService($repo);
$name = 'blob_roundtrip_' . gmdate('Ymd_His') . '_' . bin2hex(random_bytes(3));
$id = null;

$payload = "%PDF-1.7\n" . random_bytes(1536 * 1024) . "\n%%EOF";

try {
    $saved = $service->save(null, [
        'name' => $name,
        'file_name' => 'roundtrip.pdf',
        'mime_type' => 'application/pdf',
        'file_bytes_base64' => base64_encode($payload),
    ]);
    if (($saved['ok'] ?? false) !== true) {
        fwrite(STDERR, 'Failed to save large attachment: ' . json_encode($saved) . "\n");
        exit(1);
    }
    $id = (int) ($saved['id'] ?? 0);

    $reloaded = $repo->findByName($name);
    if (!is_array($reloaded)) {
        fwrite(STDERR, "Large attachment was not found after save\n");
        exit(1);
    }
    $bytes = (string) ($reloaded['file_bytes'] ?? '');
    if (strlen($bytes) !== strlen($payload)) {
        fwrite(STDERR, 'Large attachment byte length changed: expected ' . strlen($payload) . ', got ' . strlen($bytes) . "\n");
        exit(1);
    }
    if (hash('sha256', $bytes) !== hash('sha256', $payload)) {
        fwrite(STDERR, "Large attachment bytes changed after DB round-trip\n");
        exit(1);
    }
} finally {
    if ($id !== null && $id > 0) {
        try {
            $repo->delete($id);
        } catch (Throwable $e) {
        }
    }
}

echo "Attachment blob round-trip regression test passed\n";