#ifndef ALARMEVENTDATASERVICE_H
#define ALARMEVENTDATASERVICE_H

#include "alarmEventGlobal.h"
#include "alarmEventUtils.h"
#include "qamqpclient.h"
#include "qamqpexchange.h"
#include "qamqpqueue.h"
//#include <QNetworkRequest>

class QAmqpClient;
class QAmqpQueue;
class QAmqpExchange;
class QNetworkAccessManager;
class QNetworkReply;
class QTimer;
class QSettings;

class AlarmEventDataService : public QObject
{
    Q_OBJECT
    Q_DISABLE_COPY(AlarmEventDataService) //禁止拷贝，等价于：AlarmEventDataService(const AlarmEventDataService&) = delete; AlarmEventDataService& operator=(const AlarmEventDataService&) = delete;

public:
    static AlarmEventDataService* instance();
    void start();
    void stop();
    void queryHistoricalEvents(const QDateTime& startTime, const QDateTime& endTime, int confirmStatus = -1);

signals:
    void realTimeEventReceived(const EventData& event);
    void historicalQueryError(const QString& msg);
    void historicalQueryData(const QList<EventData>& events);

private slots:
    void onRabbitMQConnected();
    void onRabbitMQDisconnected();
    void onRabbitMQError(QAMQP::Error error);
    void onRabbitMQSocketError(QAbstractSocket::SocketError error);
    void onAmqpQueueOpend();
    void onMessageReceived();
    void onReconnectTimeout();
    void onHistoricalRequestFinished(QNetworkReply* reply);

private:
    explicit AlarmEventDataService();
    ~AlarmEventDataService();

    void initialize();

    //连接管理
    void startRealTimeDataService();
    void cleanupRabbitMQConnection();
    void scheduleReconnect();
    void cancelReconnect();
    //实时信息处理
    MessageHandleResult processMessage(const QAmqpMessage& message);
    EventData parseEventFromMessage(const QByteArray& data, QString& errorString);
    bool validateEvent(const EventData& event);
    //历史数据处理
    QUrl bulidHistoricalQueryUrl(const QDateTime& startTime, const QDateTime& endTime, int confirmStatus);
    void processHistoricalResponse(const QByteArray& data);
    //QNetworkRequest createHistoricalRequest(const QUrl& url);

    ServiceConfig m_config;
    ServiceStatus m_serviceStatus;
    //ConnectionStatus m_realTimeConnectionStatus;
    //ConnectionStatus m_historicalConnectionStatus;

    //RabbitMQ通信相关组件
    QAmqpClient* m_amqpClient;
    QAmqpQueue* m_amqpQueue;
    QAmqpExchange* m_amqpExchange;

    //重连相关
    QTimer* m_reconnectTimer;
    int m_reconnectAttempts;
    int m_maxReconnectAttempts;

    //历史数据相关
    QNetworkAccessManager* m_networkManager;

    //配置相关
    QSettings* m_settings;
    QString m_settingsFile;
    bool m_isVaildSettingsFile;
};

#endif