<?php

namespace App\Casts;

use App\Services\Encryption\TenantEnvelopeEncryption;
use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
use Illuminate\Database\Eloquent\Model;
use RuntimeException;

class TenantEncrypted implements CastsAttributes
{
    public function get(Model $model, string $key, mixed $value, array $attributes): ?string
    {
        if ($value === null) {
            return null;
        }
        $tenantId = (int) ($attributes['tenant_id'] ?? 0);
        if ($tenantId < 1) {
            throw new RuntimeException('TENANT_CONTEXT_REQUIRED_FOR_DECRYPTION');
        }

        return app(TenantEnvelopeEncryption::class)->decrypt($tenantId, $value);
    }

    public function set(Model $model, string $key, mixed $value, array $attributes): ?string
    {
        if ($value === null) {
            return null;
        }
        $tenantId = (int) ($attributes['tenant_id'] ?? $model->getAttribute('tenant_id'));
        if ($tenantId < 1) {
            throw new RuntimeException('TENANT_CONTEXT_REQUIRED_FOR_ENCRYPTION');
        }

        return app(TenantEnvelopeEncryption::class)->encrypt($tenantId, $value);
    }
}