<?php

namespace App\Services\Mail;

use App\Models\EmailServer;
use Illuminate\Support\Facades\Log;

class MailServerNfsService
{
    public function __construct(
        private MailServerSshExecutor $ssh,
        private EmailServerPoolService $pool,
    ) {}

    /**
     * Allow pool extension IPs on the primary NFS export.
     */
    public function refreshPrimaryExports(EmailServer $primary): void
    {
        $primary = $primary->poolRoot();

        if (! $primary->isPrimary() || ! $this->ssh->canConnect($primary)) {
            return;
        }

        $clientIps = $this->pool->poolMembers($primary)
            ->filter(fn (EmailServer $m) => $m->isExtension())
            ->pluck('ip_address')
            ->filter()
            ->unique()
            ->values()
            ->all();

        if ($clientIps === []) {
            return;
        }

        $script = resource_path('infrastructure/scripts/nfs-refresh-exports.sh');
        $replacements = [
            '__VMAIL_ROOT__' => rtrim((string) ($primary->pool_vmail_root ?: config('infrastructure.mail_stack.vmail_root', '/var/vmail')), '/'),
            '__NEW_CLIENTS__' => implode(' ', $clientIps),
        ];

        try {
            $this->ssh->uploadAndRunScript(
                $primary,
                '/tmp/ladill-nfs-refresh-exports.sh',
                $script,
                $replacements,
            );
        } catch (\Throwable $e) {
            Log::warning('Failed to refresh NFS exports on primary mail server', [
                'primary_id' => $primary->id,
                'error' => $e->getMessage(),
            ]);
        }
    }
}