#include <csignal>
#include <iostream>
#include "webserver_service.hpp"
#include "logging/logger.hpp"
#include "config/config_loader.hpp"
#include "common/config_arg.hpp"

using namespace smartbotic;

std::atomic<bool> g_shutdown{false};

void signalHandler(int signal) {
    LOG_INFO("Received signal {}, shutting down...", signal);
    g_shutdown = true;
}

int main(int argc, char* argv[]) {
    // Initialize logging
    logging::LogConfig log_config;
    log_config.name = "webserver";
    log_config.level = logging::LogLevel::Info;
    logging::Logger::init(log_config);

    LOG_INFO("SmartBotic WebServer starting...");

    // Load configuration
    const auto config_arg = common::parseConfigArg(argc, argv, "./config/webserver.json");
    const std::filesystem::path config_path = config_arg.path;

    webserver::WebServerServiceConfig config;
    if (std::filesystem::exists(config_path)) {
        config = webserver::WebServerService::loadConfig(config_path);
        LOG_INFO("Loaded configuration from {}", config_path.string());
    } else if (config_arg.explicitly_given) {
        // Someone named this file, so starting on defaults would run the
        // service against a different database, project namespace and port
        // than they asked for - and the only sign would be a warning nobody
        // reads. Refuse to start instead.
        LOG_ERROR("Config file not found at {}. It was given on the command line, "
                  "so refusing to start on built-in defaults", config_path.string());
        return 1;
    } else {
        LOG_WARN("Config file not found at {}, using defaults", config_path.string());
    }

    // Setup signal handlers
    std::signal(SIGINT, signalHandler);
    std::signal(SIGTERM, signalHandler);

    // Create and start service
    webserver::WebServerService service(config);

    try {
        service.start();

        // Wait for shutdown signal
        while (!g_shutdown) {
            std::this_thread::sleep_for(std::chrono::milliseconds(100));
        }

        service.stop();
    } catch (const std::exception& e) {
        LOG_ERROR("Fatal error: {}", e.what());
        return 1;
    }

    LOG_INFO("SmartBotic WebServer stopped");
    logging::Logger::shutdown();

    return 0;
}