#include <cxxopts.hpp>
#include <httplib.h>
#include <string>
#include <json/json.h>
#include <spdlog/spdlog.h>
#include <spdlog/sinks/basic_file_sink.h>
#include <spdlog/sinks/stdout_color_sinks.h>

std::shared_ptr<spdlog::logger> g_server_logger;
std::shared_ptr<spdlog::logger> g_cracker_logger;

#define SERVER_TRACE(...) g_server_logger->trace(__VA_ARGS__)
#define SERVER_DEBUG(...) g_server_logger->debug(__VA_ARGS__)
#define SERVER_INFO(...) g_server_logger->info(__VA_ARGS__)
#define SERVER_WARN(...) g_server_logger->warn(__VA_ARGS__)
#define SERVER_ERROR(...) g_server_logger->error(__VA_ARGS__)
#define SERVER_CRITICAL(...) g_server_logger->critical(__VA_ARGS__)

#define CRACKER_TRACE(...) g_cracker_logger->trace(__VA_ARGS__)
#define CRACKER_DEBUG(...) g_cracker_logger->debug(__VA_ARGS__)
#define CRACKER_INFO(...) g_cracker_logger->info(__VA_ARGS__)
#define CRACKER_WARN(...) g_cracker_logger->warn(__VA_ARGS__)
#define CRACKER_ERROR(...) g_cracker_logger->error(__VA_ARGS__)
#define CRACKER_CRITICAL(...) g_cracker_logger->critical(__VA_ARGS__)


void init_logger() {
    std::vector<spdlog::sink_ptr> server_sinks {
        std::make_shared<spdlog::sinks::stdout_color_sink_mt>(),
        std::make_shared<spdlog::sinks::basic_file_sink_mt>("server.log")
    };
    std::vector<spdlog::sink_ptr> cracker_sinks {
        std::make_shared<spdlog::sinks::stdout_color_sink_mt>(),
        std::make_shared<spdlog::sinks::basic_file_sink_mt>("cracker.log")
    };
    g_server_logger = std::make_shared<spdlog::logger>("Server", server_sinks.begin(), server_sinks.end());
    g_cracker_logger = std::make_shared<spdlog::logger>("Cracker", cracker_sinks.begin(), cracker_sinks.end());
}

void set_logger_level(std::shared_ptr<spdlog::logger>& logger, spdlog::level::level_enum level) {
    logger->set_level(level);
    for (auto& child : logger->sinks()) {
        child->set_level(level);
    }
}

enum LOG_LEVEL {
    TRACE_LEVEL = 0,
    DEBUG_LEVEL,
    INFO_LEVEL,
    WARN_LEVEL,
    ERROR_LEVEL,
    FATAL_LEVEL,
};

void run_server(
    int port,
    spdlog::level::level_enum log_level = spdlog::level::info,
    bool verbose = false
) {
    if (verbose) {
        set_logger_level(g_server_logger, spdlog::level::trace);
    }
    set_logger_level(g_cracker_logger, log_level);

    httplib::Server svr;

    svr.Post("/log", [](const httplib::Request& req, httplib::Response& res) {
        Json::Reader reader;
        Json::Value req_json;
        if (!reader.parse(req.body, req_json)) {
            SERVER_WARN("Invalid log request: {}", req.body);
            res.status = 400;
            return;
        }

        auto level_val = req_json["level"];
        auto message_val = req_json["message"];
        if (level_val.isNull() || message_val.isNull() || !level_val.isInt() || !message_val.isString()) {
            SERVER_WARN("Invalid log request: {}", req.body);
            res.status = 400;
            return;
        }

        auto level = level_val.asInt();
        auto message = message_val.asString();

        switch (level) {
            case TRACE_LEVEL:
                CRACKER_TRACE(message);
                break;
            case DEBUG_LEVEL:
                CRACKER_DEBUG(message);
                break;
            case INFO_LEVEL:
                CRACKER_INFO(message);
                break;
            case WARN_LEVEL:
                CRACKER_WARN(message);
                break;
            case ERROR_LEVEL:
                CRACKER_ERROR(message);
                break;
            case FATAL_LEVEL:
                CRACKER_CRITICAL(message);
                break;
            default:
                SERVER_WARN("Invalid log [level={}, message={}]", level, message);
                break;
        }
        res.status = 200;
    });

    SERVER_INFO("Server started on port: {}", port);
    svr.listen("0.0.0.0", port);
}

int main(int argc, char* argv[]) {
    init_logger();
    cxxopts::Options options("BlCrackLogger");
    options.add_options()
            ("p,port", "Port to listen on", cxxopts::value<int>()->default_value("7539"))
            ("l,level", "Cracker's log level", cxxopts::value<std::string>()->default_value("info"), "log level (trace, debug, info, warn, error, fatal)")
            ("v,verbose", "Enable verbose output", cxxopts::value<bool>()->default_value("false"))
            ("h,help", "Print usage");
    auto result = options.parse(argc, argv);
    if (result.count("help")) {
        std::cout << options.help() << std::endl;
        exit(0);
    }

    auto port = result["port"].as<int>();
    auto log_level_str = result["level"].as<std::string>();
    spdlog::level::level_enum log_level = spdlog::level::info;
    if (log_level_str == "trace") {
        log_level = spdlog::level::trace;
    } else if (log_level_str == "debug") {
        log_level = spdlog::level::debug;
    } else if (log_level_str == "info") {
        log_level = spdlog::level::info;
    } else if (log_level_str == "warn") {
        log_level = spdlog::level::warn;
    } else if (log_level_str == "error") {
        log_level = spdlog::level::err;
    } else if (log_level_str == "fatal") {
        log_level = spdlog::level::critical;
    } else {
        SERVER_WARN("Invalid log level: {}, using info level instead", log_level_str);
    }
    SERVER_INFO("Cracker's log level: {}", log_level_str);
    auto verbose = result["verbose"].as<bool>();

    run_server(port, log_level, verbose);
    spdlog::shutdown();
    return 0;
}