<?php

namespace App\Module\AppGame\HttpControllers;

use App\Http\Controllers\Controller;
use App\Module\AppGame\Tools\Protobuf;
use Illuminate\Http\Request as HttpRequest;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;
use UCore\App;
use UCore\Exception\HandleNotException;
use UCore\Exception\ValidateException;
use UCore\Helper\Logger;
use Uraus\Kku\Common\RESPONSE_CODE;
use Uraus\Kku\Request;
use Uraus\Kku\Response;

/**
 * Protobuf 控制器
 *
 * 负责处理来自客户端的 Protobuf 请求，并将其路由到相应的处理器
 */
class ProtobufController extends Controller
{
    /**
     * 处理 Protobuf 请求
     * @param HttpRequest $httpRequest HTTP请求对象
     * @return \Illuminate\Http\Response
     */
    public function gameapi(HttpRequest $httpRequest)
    {
        // 初始化请求日志记录器
        $requestLogger = new \App\Module\System\Services\RequestLogger($httpRequest);

        Log::info('开始处理 Protobuf 请求', [
            'method' => $httpRequest->method(),
            'path' => $httpRequest->path(),
            'content_type' => $httpRequest->header('Content-Type'),
            'request_unid' => RUN_UNIQID
        ]);

        // 创建响应对象
        $response = new Response();
        $response->setRunUnid(RUN_UNIQID);
        $startTime = microtime(true);
        $contentType = $httpRequest->header('Content-Type');
        $callpath = '';
        try {
            // 获取原始请求数据
            $rawData = $httpRequest->getContent();
            if (empty($rawData)) {
                throw new \Exception('Empty request data');
            }

            // 解析请求数据
            $request = new Request();

            if (stripos($contentType, 'json') !== false) {
                // JSON 格式请求
                $jsonData = json_decode($rawData, true);
                if (json_last_error() !== JSON_ERROR_NONE) {
                    throw new \Exception('Invalid JSON data: ' . json_last_error_msg());
                }
                $request->mergeFromJsonString(json_encode($jsonData));
            } else {
                // Protobuf 格式请求
                $request->mergeFromString($rawData);
            }

            $requestLogger->setProtobufJson($request->serializeToJsonString());
            // 获取路由配置
            $config = config('proto_route');
            if (empty($config['routes'])) {
                throw new \Exception('Proto route configuration not found');
            }
            Logger::debug('router-proto',$config['routes']);
            // 查找匹配的请求
            $result = $this->findValidRequest($request, $config['routes']);
            if (!$result) {
                throw new \Exception('No valid request found');
            }

            // 处理请求
            ['field' => $field, 'method' => $method, 'data' => $data] = $result;
            $moduleName = ucfirst($field);
            $methodName = Str::studly($method);

            // 构造处理器类名和响应类名
            $handlerClass = "App\\Module\\AppGame\\Handler\\{$moduleName}\\{$methodName}Handler";
            $responseMethodClass = "Uraus\\Kku\\Response\\Response{$moduleName}{$methodName}";
            $callpath = $moduleName.'-'.$methodName;
            // 检查类是否存在
            if (!class_exists($handlerClass)) {
                throw new HandleNotException("Handler not found: {$handlerClass}");
            }
            if (!class_exists($responseMethodClass)) {
                throw new HandleNotException("Response class not found: {$responseMethodClass}");
            }

            Log::info('处理请求', [
                'module' => $moduleName,
                'method' => $methodName,
                'handler' => $handlerClass
            ]);

            // 执行处理器
            $handler = new $handlerClass($response);
            // 将handler存入request以供中间件使用
            $httpRequest->attributes->set('_handler', $handler);

            // 执行登录检查中间件
            $middleware = new \App\Module\AppGame\Middleware\LoginCheck();
            $middlewareResponse = $middleware->handle($httpRequest, function ($request) use ($handler, $data) {
                return $handler->handle($data);
            });

            // 如果中间件返回了响应，说明验证未通过
            if ($middlewareResponse instanceof \Illuminate\Http\Response ||
                $middlewareResponse instanceof \Illuminate\Http\JsonResponse) {
                return $middlewareResponse;
            }

            $methodResponse = $middlewareResponse;

            // 验证返回值类型
            if (!($methodResponse instanceof $responseMethodClass)) {
                throw new \Exception(sprintf(
                                         'Handler must return instance of %s, %s given',
                                         $responseMethodClass,
                                         is_object($methodResponse) ? get_class($methodResponse) : gettype($methodResponse)
                                     ));
            }

            // 设置主响应
            $setter = 'set' . ucfirst($field).ucfirst($method);
            $response->$setter($methodResponse);

            // 如果响应码未设置，则设置为 OK
            if ($response->getCode() === 0) {
                $response->setCode(RESPONSE_CODE::OK);
            }
        } catch (HandleNotException $e) {
            $errorMsg = $e->getMessage();
            Log::error('请求处理发生异常-未找到', [
                'error' => $errorMsg,
                'trace' => $e->getTraceAsString(),
                'request_unid' => RUN_UNIQID
            ]);

            // 记录错误信息
            $requestLogger->setError($errorMsg);

            $response->setCode(RESPONSE_CODE::HANDLE_NOT);
        } catch (ValidateException $e) {
            $errorMsg = $e->validation->firstError() ?? $e->getMessage();
            Log::error('请求处理发生验证错误', [
                'error' => $errorMsg,
                'trace' => $e->getTraceAsString(),
                'request_unid' => RUN_UNIQID
            ]);

            // 记录错误信息
            $requestLogger->setError($errorMsg);

            $response->setCode(RESPONSE_CODE::VALIDATE_ERROR);
            $response->setMsg($errorMsg);
        } catch (\Exception $e) {
            if(App::is_local()){
                throw $e;
            }
            $errorMsg = $e->getMessage();
            Log::error('请求处理发生异常', [
                'error' => $errorMsg,
                'trace' => $e->getTraceAsString(),
                'request_unid' => RUN_UNIQID
            ]);

            // 记录错误信息
            $requestLogger->setError($errorMsg);

            $response->setCode(RESPONSE_CODE::SERVER_ERROR);
        }

        // 设置运行时间
        $endTime = microtime(true);
        $runMs = intval(($endTime - $startTime) * 1000);
        $response->setRunMs($runMs);
        if($callpath){
            $response->setCallpath($callpath);
        }


        // 更新请求日志记录响应信息
        $requestLogger->setResponse($response);
        $requestLogger->setRunTime($startTime);

        return Protobuf::response($response);

    }

    /**
     * 查找有效的请求
     * @param Request $request Protobuf 请求对象
     * @param array $routes 路由配置
     * @return array|null 返回模块名、方法名和数据，如果没有找到则返回 null
     */
    protected function findValidRequest(Request $request, array $routes): ?array
    {
        foreach ($routes as $field => $methods) {
            $hasMethod = 'has' . ucfirst($field);
            $getMethod = 'get' . ucfirst($field);


            foreach ($methods as $action) {
                $actionName = Str::studly($action);
                $hasActionFunc = 'has' .ucfirst($field). $actionName;
                $getActionFunc = 'get' . ucfirst($field).$actionName;
                $request->hasHouseUp();
                Logger::debug('<UNK>', [$hasMethod, $getMethod, $hasActionFunc]);
                if ( $request->$hasActionFunc()) {
                    return [
                        'field' => $field,
                        'method' => $actionName,
                        'data' => $request->$getActionFunc()
                    ];
                }
            }
        }

        return null;
    }


}