#include <iostream>
#include <chrono>
#include <thread>
#include <csignal>
#include "pipeline/common/pipeline.hpp"
#include "pipeline/common/config_parser.hpp"

using namespace pipeline;

// 全局变量用于信号处理
static std::atomic<bool> g_running{true};

// 信号处理函数
void signalHandler(int signum) {
    std::cout << "\nReceived signal " << signum << std::endl;
    g_running = false;
}

int main(int argc, char* argv[]) {
    if (argc != 2) {
        std::cerr << "Usage: " << argv[0] << " <config_file>" << std::endl;
        return 1;
    }

    // 注册信号处理
    signal(SIGINT, signalHandler);
    signal(SIGTERM, signalHandler);

    try {
        // 创建并初始化Pipeline
        Pipeline pipeline(argv[1]);
        if (!pipeline.init()) {
            std::cerr << "Failed to initialize pipeline" << std::endl;
            return 1;
        }

        // 启动Pipeline
        if (!pipeline.start()) {
            std::cerr << "Failed to start pipeline" << std::endl;
            return 1;
        }

        std::cout << "Pipeline started successfully" << std::endl;

        // 主循环：监控性能指标
        while (g_running) {
            PerformanceMetrics metrics;
            if (pipeline.getMetrics(metrics)) {
                std::cout << "\rFPS: " << metrics.fps 
                         << " | Inference time: " << metrics.inference_time_ms << "ms"
                         << " | GPU usage: " << metrics.gpu_usage_percent << "%"
                         << std::flush;
            }
            std::this_thread::sleep_for(std::chrono::seconds(1));
        }

        std::cout << "\nStopping pipeline..." << std::endl;

        // 停止Pipeline
        pipeline.stop();
        pipeline.wait();

        std::cout << "Pipeline stopped successfully" << std::endl;
        return 0;

    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
        return 1;
    }
}