<?php

namespace App\Http\Services\vCenter;

use Illuminate\Support\Facades\Log;

class DeleteVMService
{
    protected Client $client;
    protected PowerShellService $powerShellService;

    public function __construct(Client $client, PowerShellService $powerShellService)
    {
        $this->client = $client;
        $this->powerShellService = $powerShellService;
    }

    protected function resolveVCenterFromProduct($product): ?\App\Models\vCenter
    {
        if ($product->vCenter) {
            return $product->vCenter;
        }

        if ($product->ipaddress?->host?->datacenter?->vCenter) {
            return $product->ipaddress->host->datacenter->vCenter;
        }

        $service = $product->services()->first();
        if ($service) {
            $service->load('vmware.vCenter');
            if ($service->vmware?->vCenter) {
                return $service->vmware->vCenter;
            }
        }

        return null;
    }

    public function deleteVM($product, string $confirmName): array
    {
        $vmName = (string) $product->name;

        // ponytail: confirm guard — caller must pass exact vm name to proceed
        if ($confirmName !== $vmName) {
            return ['error' => true, 'message' => "Tên server xác nhận không khớp. Vui lòng nhập đúng: $vmName"];
        }

        $vcenter = $this->resolveVCenterFromProduct($product);
        if (!$vcenter) {
            return ['error' => true, 'message' => 'Không tìm thấy thông tin vCenter cho VM'];
        }

        $loginResult = $this->client->loginServer($vcenter);
        if (!$loginResult) {
            return ['error' => true, 'message' => 'Login_Again'];
        }

        $check = $this->client->checkApiExits();
        if (!$check) {
            return ['error' => true, 'message' => 'Login_Again'];
        }

        $host     = $this->client->apiUri;
        $user     = $this->client->getUsername();
        $password = $this->client->getPassword();

        try {
            Log::channel('Custom')->info("===================================================================");
            Log::channel('Custom')->info("Delete VM - $vmName");

            $command = "& 'C:\CLISave\DeleteVM\deleteVM.ps1' -VmName '$vmName' -VCenterHost '$host' -VCenterUser '$user' -VCenterPassword '$password'";
            Log::channel('Custom')->info("Executing deleteVM command for: $vmName");

            $cmdResult = $this->powerShellService->executePowerCLI($command);
            Log::channel('Custom')->info("Command Result: " . $cmdResult);

            if (strpos($cmdResult, 'Login_Fail') !== false) {
                return ['error' => true, 'message' => 'SSH Login to PowerShell server failed'];
            }

            if (strpos($cmdResult, 'SUCCESS') === false) {
                return ['error' => true, 'message' => 'PowerShell command failed: ' . $cmdResult];
            }

            Log::channel('Custom')->info("After run Command |" . now());
            Log::channel('Custom')->info("===================================================================");

            return ['error' => false];
        } catch (\Exception $error) {
            Log::channel('Custom')->error("Delete VM error: " . $error->getMessage());
            return ['error' => true, 'message' => $error->getMessage()];
        }
    }
}