<?php

namespace App\Http\Controllers\Api\Service\Concerns;

use App\Actions\VM\PowerOffVMAction;
use App\Actions\VM\PowerOnVMAction;
use App\Http\Services\vCenter;
use App\Models\ModuleVmware;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

trait ManagesVmPower
{
    /**
     * POST /v1/system/vm-power-on
     *
     * Body: { "product": <ModuleVmware.id|vmware_id|service_uuid> }
     */
    public function powerOn(Request $request, PowerOnVMAction $action): JsonResponse
    {
        $productId = $request->input('product');
        if (!$productId) {
            return response()->json(['success' => false, 'message' => 'Thiếu product id.'], 422);
        }

        $vm = $this->resolveVmById($productId, $request);
        if ($vm instanceof JsonResponse) {
            return $vm;
        }

        $lock = $this->acquireVmLock($vm);
        if (!$lock) {
            return $this->vmLocked();
        }

        try {
            $result = $action->execute($vm);
        } finally {
            $lock->release();
        }

        $this->activityLogger->log(
            event: 'power_on',
            logName: 'VM',
            description: "Customer {$request->user()->email} bật VM: {$vm->name} (ID: {$vm->vmware_id})",
            subject: $vm,
        );

        return $this->vmResponse($result, 'Đã gửi lệnh bật VM.');
    }

    /**
     * POST /v1/system/vm-power-off
     *
     * Body: { "product": <ModuleVmware.id|vmware_id|service_uuid> }
     */
    public function powerOff(Request $request, PowerOffVMAction $action): JsonResponse
    {
        $productId = $request->input('product');
        if (!$productId) {
            return response()->json(['success' => false, 'message' => 'Thiếu product id.'], 422);
        }

        $vm = $this->resolveVmById($productId, $request);
        if ($vm instanceof JsonResponse) {
            return $vm;
        }

        $lock = $this->acquireVmLock($vm);
        if (!$lock) {
            return $this->vmLocked();
        }

        try {
            $result = $action->execute($vm);
        } finally {
            $lock->release();
        }

        $this->activityLogger->log(
            event: 'power_off',
            logName: 'VM',
            description: "Customer {$request->user()->email} tắt VM: {$vm->name} (ID: {$vm->vmware_id})",
            subject: $vm,
        );

        return $this->vmResponse($result, 'Đã gửi lệnh tắt VM.');
    }

    public function restart(Request $request, vCenter $serviceVCenter): JsonResponse
    {
        $productId = $request->input('product');
        if (!$productId) {
            return response()->json(['error' => true, 'message' => 'Thiếu product id'], 422);
        }

        $vm = $this->resolveVmById($productId, $request);
        if ($vm instanceof JsonResponse) {
            return $vm;
        }

        $lock = $this->acquireVmLock($vm);
        if (!$lock) {
            return $this->vmLocked();
        }

        try {
            $result = $serviceVCenter->restartVM($vm, $vm->vmware_id);
        } finally {
            $lock->release();
        }

        if (is_string($result) || ($result['error'] ?? true)) {
            return response()->json([
                'error' => true,
                'message' => is_string($result) ? $result : ($result['data'] ?? 'Không thể restart VM'),
            ], 400);
        }

        $this->activityLogger->log(
            event: 'restart',
            logName: 'VM',
            description: "Customer {$request->user()->email} restart VM: {$vm->name} (ID: {$vm->vmware_id})",
            subject: $vm,
        );

        return response()->json([
            'error' => false,
            'message' => 'Đang restart máy ảo vui lòng chờ!',
            'data' => $result['data'] ?? 'success',
        ]);
    }

    /**
     * GET /v1/system/vm-power-state?product={id|uuid|vmware_id}
     *
     * Calls vSphere REST API directly: GET /rest/vcenter/vm/{vmware_id}/power
     * Returns: { success: true, data: { state: "POWERED_ON"|"POWERED_OFF"|"SUSPENDED", clean_power_off: bool } }
     */
    public function powerState(Request $request, vCenter $serviceVCenter): JsonResponse
    {
        $productId = $request->input('product');
        if (!$productId) {
            return response()->json(['success' => false, 'message' => 'Thiếu product id.'], 422);
        }

        $vm = $this->resolveVmById($productId, $request, requireActiveService: false);
        if ($vm instanceof JsonResponse) {
            return $vm;
        }

        $result = $serviceVCenter->getVmPowerState($vm, $vm->vmware_id);

        if ($result === 'Login_Again') {
            return response()->json(['success' => false, 'message' => 'Không thể đăng nhập vào vCenter.'], 400);
        }

        if (is_array($result) && ($result['error'] ?? true)) {
            return response()->json([
                'success' => false,
                'message' => $result['data'] ?? 'Không thể lấy trạng thái VM.',
            ], 400);
        }

        return response()->json([
            'success' => true,
            'data'    => [
                'state'           => $result['data']['state'] ?? null,
                'clean_power_off' => $result['data']['clean_power_off'] ?? null,
            ],
        ]);
    }
}