// main.cpp
#include <unistd.h>

#include <atomic>
#include <chrono>
#include <csignal>
#include <thread>

#include "app_config.hpp"
#include "logger.hpp"
#include "mqtt_client_wrapper.hpp"
#include "rtmp_manager.hpp"

std::atomic<bool> g_running(true);

// ---------- 信号处理 ----------
static void signal_handler(int)
{
    g_running.store(false, std::memory_order_relaxed);
    const char msg[] = "[MAIN] Signal received, shutting down...\n";
    write(STDERR_FILENO, msg, sizeof(msg) - 1);
}

int main()
{
    // ---------- 信号 ----------
    struct sigaction sa{};
    sa.sa_handler = signal_handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGINT, &sa, nullptr);
    sigaction(SIGTERM, &sa, nullptr);
    signal(SIGPIPE, SIG_IGN);

    // ---------- 日志 ----------
    Logger::set_log_to_file(get_executable_dir_file_path("app.log"));
    LOG_INFO("[MAIN] ===== Video RTMP Publisher Starting =====");

    // ---------- 配置 ----------
    try
    {
        g_app_config = AppConfig::load_from_file(get_executable_dir_file_path("config.json"));
        LOG_INFO("[MAIN] Config loaded.");
    }
    catch (const std::exception& e)
    {
        LOG_ERROR(std::string("[MAIN] Failed to load config: ") + e.what());
        return -1;
    }

    // ---------- GStreamer ----------
    RTMPManager::init();

    // ---------- 启动 RTMP 推流 ----------
    LOG_INFO("[MAIN] Starting RTMP pipelines...");
    RTMPManager::start_all();

    // ---------- MQTT ----------
    std::thread mqtt_thread(
        []
        {
            LOG_INFO("[MAIN] MQTT thread started.");
            mqtt_client_thread_func();
            LOG_INFO("[MAIN] MQTT thread exited.");
        });

    // ---------- 主循环 ----------
    while (g_running.load(std::memory_order_relaxed)) std::this_thread::sleep_for(std::chrono::milliseconds(200));

    // ---------- 退出 ----------
    LOG_INFO("[MAIN] Shutdown requested. Stopping services...");

    RTMPManager::stop_all();

    if (mqtt_thread.joinable()) mqtt_thread.join();

    LOG_INFO("[MAIN] ===== Video RTMP Publisher Exited Cleanly =====");
    return 0;
}