<?php

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

use App\Http\Controllers\Controller;
use App\Http\Resources\Api\Service\VpsServiceCollection;
use App\Http\Resources\Api\Client\Service\ServiceClientDetailResource;
use App\Http\Services\vCenter;
use App\Models\Order;
use App\Models\Service;
use App\Repositories\Api\ServiceClient\ServiceClientRepository;
use App\Services\ActivityLogger;
use App\Services\Api\ServiceClient\ServiceClientService;
use App\Services\VirtualMachine\Rebuild\VmRebuildService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Throwable;

class ServiceController extends Controller
{
    protected $serviceClientService;
    protected $serviceClientRepository;
    protected ActivityLogger $activityLogger;

    public function __construct(
        ServiceClientService $serviceClientService,
        ServiceClientRepository $serviceClientRepository,
        ActivityLogger $activityLogger,
    ) {
        $this->serviceClientService = $serviceClientService;
        $this->serviceClientRepository = $serviceClientRepository;
        $this->activityLogger = $activityLogger;
    }

    public function indexVps(Request $request): JsonResponse
    {
        $perPage = min((int) $request->get('per_page', 15), 100);
        $customer = $request->user();

        $services = $this->serviceClientService->getActiveServices($customer->id, 'vps', $perPage);

        return (new VpsServiceCollection($services))
            ->additional([
                'error' => false,
                'message' => 'Lấy dữ liệu thành công',
                'page_type' => 'service_vps',
            ])
            ->response();
    }

    public function indexHosting(Request $request): JsonResponse
    {
        $perPage = min((int) $request->get('per_page', 15), 100);

        return response()->json([
            'error' => false,
            'message' => 'Lấy dữ liệu thành công',
            'page_type' => 'service_hosting',
            'data' => [
                'items' => [],
                'pagination' => [
                    'total' => 0,
                    'per_page' => $perPage,
                    'current_page' => 1,
                    'last_page' => 1,
                ],
            ],
        ]);
    }

    public function indexWebDesign(Request $request): JsonResponse
    {
        $perPage = min((int) $request->get('per_page', 15), 100);

        return response()->json([
            'error' => false,
            'message' => 'Lấy dữ liệu thành công',
            'page_type' => 'service_web_design',
            'data' => [
                'items' => [],
                'pagination' => [
                    'total' => 0,
                    'per_page' => $perPage,
                    'current_page' => 1,
                    'last_page' => 1,
                ],
            ],
        ]);
    }

    public function getDetail(Request $request, string $uuid)
    {
        $service = $this->serviceClientService->getDetailService($uuid, $request->user()->id);

        if (!$service) {
            return response()->json(
                [
                    'error' => true,
                    'message' => 'Không tìm thấy dịch vụ',
                ],
                404,
            );
        }

        return (new ServiceClientDetailResource($service))->additional([
            'error' => false,
            'message' => 'Lấy dữ liệu thành công',
            'page_type' => 'service',
        ]);
    }

    public function getConsoleTicket(Request $request, string $uuid, vCenter $serviceVCenter)
    {
        $customer = $request->user();

        $service = Service::with(['orderItem.order.vmWare.vCenter'])
            ->where('uuid', $uuid)
            ->where('customer_id', $customer->id)
            ->first();

        if (!$service) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy dịch vụ'], 404);
        }

        $vm = $service->orderItem?->order?->vmWare?->first();

        if (!$vm) {
            return response()->json(['error' => true, 'message' => 'Dịch vụ chưa được cấp phát VM'], 404);
        }

        $vcenter = $vm->vCenter;

        if (!$vcenter) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy thông tin vCenter'], 404);
        }

        if (!$serviceVCenter->loginServer($vcenter)) {
            return response()->json(['error' => true, 'message' => 'Không thể đăng nhập vào vCenter']);
        }

        $consoleTicket = $serviceVCenter->GetConsoleTickets($vm->vmware_id);

        if ($consoleTicket === 'Login_Again') {
            if ($serviceVCenter->loginServer($vcenter)) {
                $consoleTicket = $serviceVCenter->GetConsoleTickets($vm->vmware_id);
            } else {
                return response()->json(['error' => true, 'message' => 'Không thể đăng nhập lại vào vCenter']);
            }
        }

        if (is_string($consoleTicket)) {
            return response()->json(['error' => true, 'message' => "Failed to get console ticket: $consoleTicket"]);
        }

        if ($consoleTicket['error']) {
            return response()->json(['error' => true, 'message' => $consoleTicket['data']]);
        }

        $this->activityLogger->log(
            event: 'console_access',
            logName: 'VM',
            description: "Customer {$customer->email} truy cập console VM: {$vm->name} (service: {$uuid})",
            subject: $vm,
            newValues: ['service_uuid' => $uuid, 'vm_name' => $vm->name],
        );

        return response()->json([
            'error' => false,
            'ticket' => $consoleTicket['data']['ticket'],
            'host' => $consoleTicket['data']['host'],
        ]);
    }

    public function getTicketByOrderNum(Request $request, vCenter $serviceVCenter): JsonResponse
    {
        $orderNum = (string) $request->query('order_num', '');
        if ($orderNum === '') {
            return response()->json(['error' => true, 'message' => 'Thiếu order_num'], 422);
        }

        $customer = $request->user();
        $order = Order::with(['vmWare.vCenter'])
            ->where('customer_id', $customer->id)
            ->where('order_num', $orderNum)
            ->first();

        if (!$order) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy đơn hàng'], 404);
        }

        $vm = $order->vmWare->first();
        if (!$vm) {
            return response()->json(['error' => true, 'message' => 'Đơn hàng chưa có VM'], 404);
        }

        $vcenter = $vm->vCenter;
        if (!$vcenter) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy thông tin vCenter'], 404);
        }

        if (!$serviceVCenter->loginServer($vcenter)) {
            return response()->json(['error' => true, 'message' => 'Không thể đăng nhập vào vCenter']);
        }

        $consoleTicket = $serviceVCenter->GetConsoleTickets($vm->vmware_id);

        if ($consoleTicket === 'Login_Again') {
            if ($serviceVCenter->loginServer($vcenter)) {
                $consoleTicket = $serviceVCenter->GetConsoleTickets($vm->vmware_id);
            } else {
                return response()->json(['error' => true, 'message' => 'Không thể đăng nhập lại vào vCenter']);
            }
        }

        if (is_string($consoleTicket)) {
            return response()->json(['error' => true, 'message' => "Failed to get console ticket: $consoleTicket"]);
        }

        if ($consoleTicket['error']) {
            return response()->json(['error' => true, 'message' => $consoleTicket['data']]);
        }

        $this->activityLogger->log(
            event: 'console_access',
            logName: 'VM',
            description: "Customer {$customer->email} truy cập console VM: {$vm->name} (order: {$order->order_num})",
            subject: $vm,
            newValues: ['order_num' => $order->order_num, 'vm_name' => $vm->name],
        );

        return response()->json([
            'error' => false,
            'ticket' => $consoleTicket['data']['ticket'],
            'host' => $consoleTicket['data']['host'],
            'order_num' => $order->order_num,
            'vm_id' => $vm->id,
        ]);
    }

    public function getAvailableOs(Request $request, string $uuid): JsonResponse
    {
        $customer = $request->user();

        $service = Service::with([
            'product.osVersions' => fn($q) => $q->where('status', 1)->with('osGroup'),
        ])
            ->where('uuid', $uuid)
            ->where('customer_id', $customer->id)
            ->first();

        if (!$service) {
            return response()->json(['success' => false, 'message' => 'Không tìm thấy dịch vụ'], 404);
        }

        if (!in_array($service->status, ['active', 'suspended'], true)) {
            return response()->json(
                ['success' => false, 'message' => 'Dịch vụ không ở trạng thái hợp lệ để xem OS'],
                422,
            );
        }

        if (!$service->product) {
            return response()->json(['success' => false, 'message' => 'Không tìm thấy product của dịch vụ'], 404);
        }

        $grouped = $service->product->osVersions
            ->groupBy(fn($os) => $os->osGroup?->id ?? 0)
            ->map(
                fn($items) => [
                    'group' => [
                        'id' => $items->first()->osGroup?->id,
                        'name' => $items->first()->osGroup?->name,
                        'thumbnail' => $items->first()->osGroup?->thumbnail,
                    ],
                    'items' => $items
                        ->map(
                            fn($os) => [
                                'id' => $os->id,
                                'version' => $os->version,
                                'template_id' => $os->template_id,
                            ],
                        )
                        ->values(),
                ],
            )
            ->values();

        return response()->json([
            'success' => true,
            'data' => $grouped,
        ]);
    }

    public function updateAutoRenew(Request $request, string $uuid): JsonResponse
    {
        $validated = $request->validate(['auto_renew' => ['required', 'boolean']]);

        $service = Service::query()
            ->where('uuid', $uuid)
            ->where('customer_id', $request->user()->id)
            ->first();

        if (! $service) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy dịch vụ'], 404);
        }

        $service->update(['auto_renew' => (bool) $validated['auto_renew']]);

        $this->activityLogger->log(
            event: 'updated',
            logName: 'Service',
            description: "Customer {$request->user()->email} " . ($validated['auto_renew'] ? 'bật' : 'tắt') . " tự động gia hạn dịch vụ #{$service->id}",
            subject: $service,
            newValues: ['auto_renew' => (bool) $validated['auto_renew']],
        );

        return response()->json([
            'error' => false,
            'message' => 'Cập nhật tự động gia hạn thành công.',
            'data' => [
                'uuid' => $service->uuid,
                'id' => $service->id,
                'auto_renew' => (bool) $service->auto_renew,
            ],
        ]);
    }

    public function rebuild(Request $request, string $uuid, VmRebuildService $rebuildService): JsonResponse
    {
        $customer = $request->user();
        $payload = $request->validate([
            'os_id' => ['required', 'integer', 'exists:os,id'],
            'password' => ['nullable', 'string', 'min:8', 'max:255'],
        ]);

        $service = Service::with(['product.osVersions', 'vmware'])
            ->where('uuid', $uuid)
            ->where('customer_id', $customer->id)
            ->first();

        if (!$service) {
            return response()->json(['success' => false, 'message' => 'Không tìm thấy dịch vụ'], 404);
        }

        if ($service->status === 'suspended') {
            return response()->json(
                ['success' => false, 'message' => 'Dịch vụ đang bị tạm ngưng, không thể rebuild'],
                422,
            );
        }

        if (!$service->isActive()) {
            return response()->json(['success' => false, 'message' => 'Dịch vụ không ở trạng thái active'], 422);
        }

        $allowedOsIds =
            $service->product?->osVersions()->where('status', 1)->pluck('os.id')->map('intval')->toArray() ?? [];

        if (!in_array((int) $payload['os_id'], $allowedOsIds, true)) {
            return response()->json(['success' => false, 'message' => 'OS không hợp lệ cho sản phẩm hiện tại'], 422);
        }

        $vm = $service->vmware;
        if (!$vm) {
            return response()->json(['success' => false, 'message' => 'Dịch vụ chưa được cấp phát VM'], 404);
        }

        try {
            $log = $rebuildService->dispatchRebuild(
                moduleVmwareId: (int) $vm->id,
                newOsId: (int) $payload['os_id'],
                initiatorCustomerId: (int) $customer->id,
                customPassword: !empty($payload['password']) ? (string) $payload['password'] : null,
                initiator: 'client',
                note: 'Client rebuild via service UUID: ' . $uuid,
            );
        } catch (Throwable $e) {
            Log::error('Client rebuild dispatch failed', [
                'service_uuid' => $uuid,
                'module_vmware_id' => $vm->id,
                'error' => $e->getMessage(),
            ]);

            return response()->json([
                'success' => false,
                'message' => 'Không thể gửi yêu cầu rebuild: ' . $e->getMessage(),
            ], 400);
        }

        $this->activityLogger->log(
            event: 'rebuild',
            logName: 'VM',
            description: "Customer {$customer->email} rebuild VM: {$vm->name} với OS ID: {$payload['os_id']} qua service UUID: {$uuid}",
            subject: $vm,
            newValues: [
                'os_id' => (int) $payload['os_id'],
                'service_uuid' => $uuid,
                'reinstall_log_id' => $log->id,
                'custom_password' => !empty($payload['password']),
            ],
        );

        return response()->json([
            'success' => true,
            'message' => 'Đã gửi yêu cầu rebuild VM',
            'data' => [
                'reinstall_log_id' => $log->id,
                'status' => $log->status,
            ],
        ]);
    }
}