<?php

namespace App\Services\Drift;

class DriftHasher
{
    public function fingerprint(
        int $tenantId,
        string $scopeKey,
        string $subjectType,
        string $subjectExternalId,
        string $changeType,
        string $baselineHash,
        string $currentHash,
    ): string {
        $parts = [
            (string) $tenantId,
            $this->normalize($scopeKey),
            $this->normalize($subjectType),
            $this->normalize($subjectExternalId),
            $this->normalize($changeType),
            $this->normalize($baselineHash),
            $this->normalize($currentHash),
        ];

        return hash('sha256', implode('|', $parts));
    }

    private function normalize(string $value): string
    {
        return trim(mb_strtolower($value));
    }
}