<?php

namespace App\Osint\Runners;

use App\Models\Target;
use App\Osint\Runner;
use App\Osint\RunnerException;
use App\Osint\RunnerResult;
use Illuminate\Support\Facades\Process;

class WhoisRunner implements Runner
{
    public function run(Target $target): RunnerResult
    {
        if ($target->type !== 'domain') {
            throw new RunnerException('WHOIS only supports "domain" targets here.');
        }

        if (! preg_match('/^([a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$/', $target->value)) {
            throw new RunnerException('Domain contains characters that are not safe to look up.');
        }

        $python = config('osint.python_venv').'/bin/python3';
        $script = config('osint.whois_script');

        if (! is_executable($python) || ! is_file($script)) {
            throw new RunnerException("WHOIS script not set up. Run scripts/python/setup.sh.");
        }

        $result = Process::timeout((int) config('osint.run_timeout'))
            ->run([$python, $script, $target->value]);

        if (! $result->successful()) {
            $error = json_decode($result->errorOutput(), true)['error'] ?? $result->errorOutput();
            throw new RunnerException("WHOIS lookup failed: {$error}");
        }

        $data = json_decode($result->output(), true);

        if (! is_array($data)) {
            throw new RunnerException('WHOIS lookup returned unparseable output.');
        }

        if (empty($data['domain_name']) && empty($data['registrar'])) {
            return new RunnerResult(raw: $data, summary: 'No WHOIS record found.');
        }

        $summary = sprintf(
            'Registrar: %s. Created: %s. Expires: %s. Name servers: %s.',
            $this->stringify($data['registrar'] ?? null) ?? 'unknown',
            $this->stringify($data['creation_date'] ?? null) ?? 'unknown',
            $this->stringify($data['expiration_date'] ?? null) ?? 'unknown',
            $this->stringify($data['name_servers'] ?? null) ?? 'none'
        );

        return new RunnerResult(raw: $data, summary: $summary);
    }

    private function stringify(mixed $value): ?string
    {
        if (is_array($value)) {
            return implode(', ', $value) ?: null;
        }

        return $value;
    }
}