<?php

declare(strict_types=1);

namespace App\Observers;

use App\Models\Invoice;
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)
                ->where('os_id', $moduleVmware->os_id)
                ->first();

            $invoice = Invoice::where('order_id', $moduleVmware->order_id)->first();

            Service::firstOrCreate(
                ['order_item_id' => $orderItem?->id],
                [
                    'customer_id' => $moduleVmware->customer_id,
                    'product_id'  => $orderItem?->product_id,
                    'invoice_id'  => $invoice?->id,
                    'vm_id'       => $moduleVmware->vmware_id,
                    'server_name' => $moduleVmware->hostname ?? $moduleVmware->name,
                    'status'      => 'active',
                    'auto_renew'  => false,
                    'started_at'  => now(),
                    'expires_at'  => ($orderItem && (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,
            ]);
        } catch (\Throwable $e) {
            Log::error('Lỗi khi tạo Service từ ModuleVmwareObserver: ' . $e->getMessage(), [
                'module_vmware_id' => $moduleVmware->id,
                'order_id'         => $moduleVmware->order_id,
            ]);
        }
    }
}