#include "RtpServer.h"

#include <QTcpSocket>
#include "ThreadManager.h"


RTPServer::RTPServer(QObject *parent)
    : QObject(parent), m_tcpServer(nullptr), m_port(8808)
{
    
}

RTPServer::~RTPServer()
{
    if (m_tcpServer) 
    {
        m_tcpServer->close();
        delete m_tcpServer;
        m_tcpServer = nullptr;
    }
}

/**
 * @brief 启动RTP服务
 * @param port 监听端口
 * @return 成功返回true，失败返回false
 */
bool RTPServer::thread_task(int port)
{
    m_logger = spdlog::get("RTPServer");
    if (!m_logger) 
    {
        fmt::print("RTPServer: Failed to get logger instance.\n");
        return false;
    }

    SPDLOG_LOGGER_INFO(m_logger, "♫ 开启 RTPServer 服务线程");

    if(m_tcpServer == nullptr)
    {
        m_tcpServer = new QTcpServer(this);
    }

    m_port = port;
    if(!m_tcpServer->listen(QHostAddress::Any, m_port))
    {
        SPDLOG_LOGGER_ERROR(m_logger, "Failed to start RTP server on port {}", m_port);
        SPDLOG_LOGGER_ERROR(m_logger, "错误信息: {}", m_tcpServer->errorString().toStdString());
        return false;
    }

    /* 开启事件循环 */
    connect(m_tcpServer, &QTcpServer::newConnection, this, &RTPServer::do_newConnection);
    connect(m_tcpServer, &QTcpServer::acceptError, this, &RTPServer::do_error);

    m_isStoped.store(false);
    m_eventLoop.exec();
    m_isStoped.store(true);
    SPDLOG_LOGGER_INFO(m_logger, "♫ RTPServer 线程结束运行");
    return true;
}

/* 停止线程 */
void RTPServer::stopThreadBlock()
{
    if(m_eventLoop.isRunning())
    {
        m_eventLoop.quit();
    }
    while(!m_isStoped.load())
    {
        std::this_thread::sleep_for(std::chrono::milliseconds(10));
    }
}

/* 处理新连接 */
void RTPServer::do_newConnection()
{
    QTcpSocket* clientSocket = m_tcpServer->nextPendingConnection();
    if (clientSocket == nullptr) 
    {
        SPDLOG_LOGGER_ERROR(m_logger, "Failed to get pending connection.");
        return;
    }

    connect(clientSocket, &QTcpSocket::disconnected, this, &RTPServer::do_disconnect);
    connect(clientSocket, &QTcpSocket::readyRead, this, &RTPServer::do_receiveMessage);
    SPDLOG_LOGGER_INFO(m_logger, "新的客户端连接: {}", clientSocket->peerAddress().toString().toStdString());
    m_listClients.append(clientSocket);  // 添加到客户端列表中
}

/* 监听服务错误 */
void RTPServer::do_error(QAbstractSocket::SocketError socketError)
{
    SPDLOG_LOGGER_ERROR(m_logger, "RTP Server error: {}, {}", static_cast<int>(socketError), m_tcpServer->errorString().toStdString());
}

/* 断开连接 */
void RTPServer::do_disconnect()
{
    QTcpSocket* clientSocket = qobject_cast<QTcpSocket*>(sender());
    if (clientSocket) 
    {
        SPDLOG_LOGGER_INFO(m_logger, "客户端断开连接: {}", clientSocket->peerAddress().toString().toStdString());
        clientSocket->deleteLater();
        m_listClients.removeAll(clientSocket);
    } else 
    {
        SPDLOG_LOGGER_ERROR(m_logger, "Failed to cast sender to QTcpSocket.");
    }
}

/* 接收消息 */
void RTPServer::do_receiveMessage()
{
    QTcpSocket* clientSocket = qobject_cast<QTcpSocket*>(sender());
    if (clientSocket == nullptr) 
    {
        SPDLOG_LOGGER_ERROR(m_logger, "Failed to cast sender to QTcpSocket.");
        return;
    }

    QByteArray data = clientSocket->readAll();
    if (data.isEmpty()) 
    {
        SPDLOG_LOGGER_WARN(m_logger, "Received empty data from client: {}", clientSocket->peerAddress().toString().toStdString());
        return;
    }

    SPDLOG_LOGGER_TRACE(m_logger, "RTPServer从: {}:{} 接收到原始数据: {}, 大小: {}", 
                        clientSocket->peerAddress().toString().toStdString(), clientSocket->peerPort(), 
                        data.toHex().toStdString(), data.size());
    // SPDLOG_LOGGER_TRACE(m_logger, "RTPServer从: {}:{} 接收到数据: {}", 
    //                     clientSocket->peerAddress().toString().toStdString(), clientSocket->peerPort(), 
    //                     QString(data).toStdString());
    // return;

    if(data.size() < sizeof(RtpRecvClientInfo_t)) 
    {
        SPDLOG_LOGGER_WARN(m_logger, "从客户端接收到的数据大小: {} 低于应有的大小 {}", 
                            clientSocket->peerAddress().toString().toStdString(), sizeof(RtpRecvClientInfo_t));
        return;
    }


    /* 处理接收到的数据 */
    RtpSendClientInfo_t sendInfo;
    QString clientIP = clientSocket->peerAddress().toString();
    quint16 clientPort = clientSocket->peerPort();
    RtpRecvClientInfo_t* recvInfo = reinterpret_cast<RtpRecvClientInfo_t*>(data.data());

    SPDLOG_LOGGER_DEBUG(m_logger, "客户端信息: ");
    SPDLOG_LOGGER_DEBUG(m_logger, "    客户端IP: {}", recvInfo->clientIP);
    SPDLOG_LOGGER_DEBUG(m_logger, "    客户端端口: {}", recvInfo->clientPort);
    SPDLOG_LOGGER_DEBUG(m_logger, "    对比项ID: {}", recvInfo->compareItemID);
    SPDLOG_LOGGER_DEBUG(m_logger, "    对比项通道号: {}", recvInfo->compareItemRoadNum);
    SPDLOG_LOGGER_DEBUG(m_logger, "    客户端名称: {}", recvInfo->sessionName);
    SPDLOG_LOGGER_DEBUG(m_logger, "    包类型: {}", recvInfo->type);

    /* 解析客户端发送的信息 */
    sendInfo.clientIP = clientIP;
    sendInfo.clientPort = clientPort;
    /* 查找本地可用的UDP端口，这里先使用10010测试 */
    sendInfo.localPort = 10010;

    switch(recvInfo->type)
    {
        case 0: // 登录请求
            handleLogin(sendInfo);
            break;
        case 1: // 心跳请求
            handleHeartbeat(sendInfo);
            break;
        case 2: // 注销请求
            handleLogout(sendInfo);
            break;
        default:
            SPDLOG_LOGGER_WARN(m_logger, "来自客户端为止的请求 {}:{}", sendInfo.clientIP.toStdString(), sendInfo.clientPort);
            break;
    }
}

/* 处理登录请求 */
void RTPServer::handleLogin(RtpSendClientInfo_t& clientInfo)
{
    /* 获取RTP发送线程 */
    
}

/* 处理心跳请求 */
void RTPServer::handleHeartbeat(RtpSendClientInfo_t& clientInfo)
{

}

/* 处理注销请求 */
void RTPServer::handleLogout(RtpSendClientInfo_t& clientInfo)
{

}


/* 获取发送UDP数据的指针 */
bool RTPServer::getSendUdpSocketPtr(SoundCardRoadInfo_t roadID)
{
    
    return true;
}