<?php

namespace App\Http\Services\vCenter\Concerns;

use App\Support\TlsHttpClientFactory;
use Illuminate\Support\Facades\Log;

trait ReadsVirtualMachineInfo
{
    public function getAllVirtualMachine($datacenter = '', $host = '')
    {
        if ($this->client->checkApiExits()) {
            $params = [];
            if (!empty($datacenter)) {
                $params['filter.datacenters'] = $datacenter;
            }
            if (!empty($host)) {
                $params['filter.hosts'] = $host;
            }

            $response = TlsHttpClientFactory::vCenter()
                ->withHeaders([
                    'vmware-api-session-id' => $this->client->token
                ])
                ->get("https://{$this->client->apiUri}/rest/vcenter/vm", $params)->json();

            if (!isset($response['type'])) {
                return $response['value'];
            }
            return false;
        }
        return "Login_Again";
    }

    public function CheckVirtualMachine($vmware_id = '')
    {
        if ($this->client->checkApiExits()) {
            $response = TlsHttpClientFactory::vCenter()
                ->withHeaders([
                    'vmware-api-session-id' => $this->client->token
                ])
                ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id")->json();

            if (!isset($response['type'])) {
                return $response['value'];
            }
            return false;
        }
        return "Login_Again";
    }

    /**
     * Search VM by exact name in vCenter.
     * Returns the first matching VM array or null if not found.
     */
    public function findVirtualMachineByName(string $vmName): ?array
    {
        $check = $this->client->checkApiExits();
        if (!$check) {
            Log::warning('findVirtualMachineByName: API check failed');
            return null;
        }

        $response = TlsHttpClientFactory::vCenter()
            ->withHeaders([
                'vmware-api-session-id' => $this->client->token
            ])
            ->get("https://{$this->client->apiUri}/rest/vcenter/vm", [
                'filter.names.1' => $vmName,
            ]);

        if (!$response->successful()) {
            Log::warning('findVirtualMachineByName: HTTP failed', ['status' => $response->status()]);
            return null;
        }

        $json = $response->json();
        if (isset($json['type']) || empty($json['value'])) {
            return null;
        }

        return $json['value'][0] ?? null;
    }

    public function GetDetailVirtualMachine($vmware_id = ''): array
    {
        $response = TlsHttpClientFactory::vCenter()
            ->withHeaders([
                'vmware-api-session-id' => $this->client->token
            ])
            ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id")->json();
        if (!isset($response['type'])) {
            return [
                'error' => false,
                'data' => $response['value']
            ];
        }
        return [
            'error' => true,
            'message' => $response['value']
        ];
    }

    public function GetIPAddressVirtualMachine($vmware_id = ''): array
    {
        $response = TlsHttpClientFactory::vCenter()
            ->withHeaders([
                'vmware-api-session-id' => $this->client->token
            ])
            ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id/guest/identity")->json();
        if (!isset($response['type'])) {
            return [
                'error' => false,
                'data' => $response['value']
            ];
        }
        return [
            'error' => true,
            'message' => $response['value']
        ];
    }

    public function GetVMStats($vmware_id = ''): array
    {
        $stats = [
            'cpu' => null,
            'memory' => null,
            'disk' => null,
        ];

        try {
            $hardwareResponse = TlsHttpClientFactory::vCenter()
                ->withHeaders([
                    'vmware-api-session-id' => $this->client->token
                ])
                ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id/hardware")->json();

            if (is_array($hardwareResponse) && !isset($hardwareResponse['type']) && isset($hardwareResponse['value'])) {
                foreach ($hardwareResponse['value'] as $hardware) {
                    if (isset($hardware['label']) && $hardware['label'] === 'CPU') {
                        $stats['cpu'] = [
                            'cores' => $hardware['spec']['num_cores'] ?? 0,
                            'cores_per_socket' => $hardware['spec']['cores_per_socket'] ?? 0,
                        ];
                    }
                    if (isset($hardware['label']) && $hardware['label'] === 'Memory') {
                        $stats['memory'] = [
                            'size_MiB' => $hardware['spec']['size_MiB'] ?? 0,
                            'size_GB' => round(($hardware['spec']['size_MiB'] ?? 0) / 1024, 2),
                        ];
                    }
                    if (isset($hardware['label']) && $hardware['label'] === 'Hard disk') {
                        $stats['disk'][] = [
                            'capacity' => $hardware['capacity'] ?? 0,
                            'capacity_GB' => round(($hardware['capacity'] ?? 0) / (1024 * 1024 * 1024), 2),
                        ];
                    }
                }
            }

            $guestMemoryResponse = TlsHttpClientFactory::vCenter()
                ->withHeaders([
                    'vmware-api-session-id' => $this->client->token
                ])
                ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id/guest/memory")->json();

            if (is_array($guestMemoryResponse) && !isset($guestMemoryResponse['type']) && isset($guestMemoryResponse['value'])) {
                $stats['memory']['used_MiB'] = $guestMemoryResponse['value']['used'] ?? 0;
                $stats['memory']['used_GB'] = round(($guestMemoryResponse['value']['used'] ?? 0) / 1024, 2);
                $stats['memory']['usage_percent'] = $stats['memory']['size_MiB'] > 0
                    ? round(($guestMemoryResponse['value']['used'] ?? 0) / $stats['memory']['size_MiB'] * 100, 1)
                    : 0;
            }

            $guestCpuResponse = TlsHttpClientFactory::vCenter()
                ->withHeaders([
                    'vmware-api-session-id' => $this->client->token
                ])
                ->get("https://{$this->client->apiUri}/rest/vcenter/vm/$vmware_id/guest/cpu")->json();

            if (is_array($guestCpuResponse) && !isset($guestCpuResponse['type']) && isset($guestCpuResponse['value'])) {
                $stats['cpu']['used_percent'] = $guestCpuResponse['value']['used'] ?? 0;
            }

            return ['error' => false, 'data' => $stats];
        } catch (\Exception $e) {
            return ['error' => true, 'message' => $e->getMessage(), 'data' => $stats];
        }
    }
}