//
// Created by xcbosa on 2023/1/28.
//

#pragma once

#include "processor-private.h"
#include "../utils/utils.h"

#define __merge_body(a, b) a ## b
#define __merge(a, b) __merge_body(a, b)
#define __uniqueVarName(name) __merge(name, __LINE__)
#define __string_fic(a) #a
#define __string_fic_r(a) __string_fic(a)

#define ContentGeneratorDefineWithName(name, cond, eval) const static ContentGenerator __uniqueVarName(AutoContentGenerator_Line_)(name, ([] (auto request) { cond; }), ([] (auto request) { eval; }));
#define ContentGeneratorDefineWithNameS(name, cond, eval) ContentGeneratorDefineWithName(name, return cond, return eval)
#define ContentGeneratorDefine(cond, eval) ContentGeneratorDefineWithName(__string_fic_r(__uniqueVarName(AutoRegistered_Line_) __FILE_NAME__), cond, eval)
#define ContentGeneratorDefineS(cond, eval) ContentGeneratorDefine(return cond, return eval)

using namespace std;

namespace xc {
    namespace processor {

        /*输入一个请求，判断此生成器是否响应此请求*/
        typedef function<bool (RequestData)> RequestCheckBlock;

        /*为此请求生成响应，响应需要使用new，在发送完成或HTTP服务器不再需要时自动调用delete销毁*/
        typedef function<ResponseData* (RequestData)> ContentGenerateBlock;

        /*请定义为static*/
        class ContentGenerator {
        public:
            ContentGenerator(string name, RequestCheckBlock checker, ContentGenerateBlock generator);
            bool matchRequest(RequestData request) const;
            ResponseData *generateResponse(RequestData request) const;
            string getName() const;
        private:
            string name;
            RequestCheckBlock checker;
            ContentGenerateBlock generator;
        };

        const ContentGenerator *findContentGenerator(string name);

    }
}