<?php

namespace App\Services;

use App\Enums\LicenseStatus;
use App\Models\BillingOrder;
use App\Models\DeploymentInstallation;
use App\Models\License;
use Illuminate\Support\Facades\DB;

class BillingService
{
    public function activate(BillingOrder $order, ?int $issuerId = null): License
    {
        return DB::transaction(function () use ($order, $issuerId): License {
            $order = BillingOrder::withoutGlobalScope('tenant')->lockForUpdate()->findOrFail($order->id);
            if ($order->status === 'paid' && $order->license) {
                return $order->license;
            }
            $plan = config("billing.plans.{$order->plan_code}");
            abort_unless($plan, 422, 'Paket lisensi tidak tersedia.');
            $installation = DeploymentInstallation::withoutGlobalScope('tenant')->where('tenant_id', $order->tenant_id)->firstOrFail();
            $current = License::withoutGlobalScope('tenant')->where('tenant_id', $order->tenant_id)
                ->whereIn('status', [LicenseStatus::Active->value, LicenseStatus::Grace->value])->latest('created_at')->first();
            $startsAt = $current && $current->plan !== 'cloud_free' && $current->expires_at->isFuture() ? $current->expires_at : now();
            $current?->update(['status' => LicenseStatus::Revoked]);
            $license = License::withoutGlobalScope('tenant')->create([
                'tenant_id' => $order->tenant_id, 'deployment_installation_id' => $installation->id,
                'license_key_hash' => hash('sha256', random_bytes(32)), 'plan' => $order->plan_code,
                'status' => LicenseStatus::Active, 'max_devices' => $plan['max_devices'], 'max_users' => $plan['max_users'],
                'features' => ['device_access_management'], 'starts_at' => $startsAt, 'expires_at' => $startsAt->addMonth(),
                'grace_until' => $startsAt->addMonth()->addDays(7), 'issued_by' => $issuerId,
            ]);
            $order->update(['license_id' => $license->id, 'status' => 'paid', 'paid_at' => now()]);

            return $license;
        });
    }
}