<?php

declare(strict_types=1);

namespace App\Services\VirtualMachine;

use App\Models\OrderItem;
use App\Models\Os;
use App\Services\VirtualMachine\Dto\VmInfrastructureContext;
use RuntimeException;

/**
 * Resolves the provisioning target by walking the ACTIVE chain only:
 *
 *   active vCenter → active Datacenter → active Host → active Datastore + Network
 *
 * Product / OS bindings are now informational only — the host/datacenter/vcenter
 * configured per-product no longer drive VM creation. The whole platform clones
 * onto whatever single chain is currently marked status=1.
 */
class VmInfrastructureResolver
{
    public function __construct(
        private readonly VmProvisionLogger $logger,
        private readonly VmActiveProviderService $activeProvider,
    ) {
    }

    public function resolve(OrderItem $item, $product): VmInfrastructureContext
    {
        $os = Os::with('osGroup')->find($item->os_id);

        if (!$os) {
            throw new RuntimeException(
                "Không tìm thấy OS id={$item->os_id} trong OrderItem #{$item->id}. os_id không hợp lệ."
            );
        }

        $chain = $this->activeProvider->resolveChain();

        $this->logger->step('Infrastructure resolved from active chain', [
            'order_item_id' => $item->id,
            'vcenter_id'    => $chain['vcenter']->id,
            'datacenter_id' => $chain['datacenter']->id,
            'host_id'       => $chain['host']->id,
            'datastore_id'  => $chain['datastore']->id,
            'network_id'    => $chain['network']->id,
        ]);

        $osGroupName = $os->osGroup?->name ?? '';
        $isWindows   = str_contains(strtolower($osGroupName), 'windows');

        return new VmInfrastructureContext(
            os:         $os,
            host:       $chain['host'],
            datacenter: $chain['datacenter'],
            vcenter:    $chain['vcenter'],
            template:   $os->template_id,
            isWindows:  $isWindows,
            vmUser:     $isWindows ? 'administrator' : 'root',
            vmPort:     $isWindows ? 3389 : 22,
            datastore:  $chain['datastore'],
            network:    $chain['network'],
        );
    }
}