<?php

declare(strict_types=1);

namespace App\Observers;

use App\Models\ModuleVmware;
use App\Models\OrderItem;
use App\Models\Service;
use Illuminate\Support\Facades\Log;

class ModuleVmwareObserver
{
    /**
     * Handle the ModuleVmware "created" event.
     * Fired by CreateVirtualMachineJob khi tạo bản ghi mới sau khi VM được provisioned.
     */
    public function created(ModuleVmware $moduleVmware): void
    {
        Log::info('ModuleVmware created', [
            'id'          => $moduleVmware->id,
            'vmware_id'   => $moduleVmware->vmware_id,
            'name'        => $moduleVmware->name,
            'order_id'    => $moduleVmware->order_id,
            'customer_id' => $moduleVmware->customer_id,
        ]);

        if ($moduleVmware->vmware_id && $moduleVmware->order_id) {
            $this->syncServiceRecord($moduleVmware);
        }
    }

    /**
     * Handle the ModuleVmware "updated" event.
     * Fired by CreateVMJobs khi update vmware_id vào bản ghi đã tồn tại.
     */
    public function updated(ModuleVmware $moduleVmware): void
    {
        Log::info('ModuleVmware updated', [
            'id'        => $moduleVmware->id,
            'vmware_id' => $moduleVmware->vmware_id,
            'name'      => $moduleVmware->name,
            'status'    => $moduleVmware->status,
        ]);

        // Chỉ tạo Service khi vmware_id vừa được set (chuyển từ null → có giá trị)
        if (
            $moduleVmware->wasChanged('vmware_id')
            && $moduleVmware->vmware_id
            && !$moduleVmware->getOriginal('vmware_id')
            && $moduleVmware->order_id
        ) {
            $this->syncServiceRecord($moduleVmware);
        }
    }

    /**
     * Handle the ModuleVmware "deleted" event.
     */
    public function deleted(ModuleVmware $moduleVmware): void
    {
        Log::info('ModuleVmware deleted', [
            'id'        => $moduleVmware->id,
            'vmware_id' => $moduleVmware->vmware_id,
            'name'      => $moduleVmware->name,
        ]);
    }

    /**
     * Handle the ModuleVmware "restored" event.
     */
    public function restored(ModuleVmware $moduleVmware): void
    {
        Log::info('ModuleVmware restored', [
            'id'        => $moduleVmware->id,
            'vmware_id' => $moduleVmware->vmware_id,
            'name'      => $moduleVmware->name,
        ]);
    }

    /**
     * Handle the ModuleVmware "force deleted" event.
     */
    public function forceDeleted(ModuleVmware $moduleVmware): void
    {
        Log::info('ModuleVmware force deleted', [
            'id'        => $moduleVmware->id,
            'vmware_id' => $moduleVmware->vmware_id,
            'name'      => $moduleVmware->name,
        ]);
    }

    // -------------------------------------------------------------------------

    /**
     * Tạo hoặc cập nhật bản ghi Service tương ứng với VM vừa được provisioned.
     * Dùng chung cho cả created và updated event.
     */
    private function syncServiceRecord(ModuleVmware $moduleVmware): void
    {
        try {
            $orderItem = OrderItem::where('order_id', $moduleVmware->order_id)
                ->first();

            if (!$orderItem) {
                Log::warning('ModuleVmwareObserver: không tìm thấy OrderItem', [
                    'order_id'         => $moduleVmware->order_id,
                    'module_vmware_id' => $moduleVmware->id,
                ]);
                return;
            }

            $updated = Service::where('order_item_id', $orderItem->id)
                ->update([
                    'vm_id'      => $moduleVmware->id,
                    'status'     => 'active',
                    'expires_at' => (int) $orderItem->months > 0
                        ? now()->addMonths((int) $orderItem->months)
                        : null,
                ]);

            Log::info('Service record synced for ModuleVmware', [
                'module_vmware_id' => $moduleVmware->id,
                'vmware_id'        => $moduleVmware->vmware_id,
                'order_item_id'    => $orderItem->id,
                'rows_updated'     => $updated,
            ]);
        } catch (\Throwable $e) {
            Log::error('Lỗi khi sync Service từ ModuleVmwareObserver: ' . $e->getMessage(), [
                'module_vmware_id' => $moduleVmware->id,
                'order_id'         => $moduleVmware->order_id,
            ]);
        }
    }
}