#ifndef QSUBSCRIPTIONMANAGER_H
#define QSUBSCRIPTIONMANAGER_H
#include <QObject>
#include <QList>
#include <QMap>
#include <QSharedPointer>
#include <QDateTime>
#include <QMutex>
#include "BZStruct.h"
struct SubscriptionConfig {
    QString stockCode;
    double threshold;  
    bool enabled;
    QDateTime lastUpdated;
    SubscriptionConfig() : threshold(0.0), enabled(true) {}
    SubscriptionConfig(const QString& code, double thresh, bool en = true) 
        : stockCode(code), threshold(thresh), enabled(en), lastUpdated(QDateTime::currentDateTime()) {}
    bool operator==(const SubscriptionConfig& other) const {
        return stockCode == other.stockCode;
    }
};
class QSubscriptionManager : public QObject
{
    Q_OBJECT
public:
    static QSubscriptionManager* instance();
    bool addSubscription(const QString& stockCode, double threshold);
    bool removeSubscription(const QString& stockCode);
    bool updateThreshold(const QString& stockCode, double threshold);
    bool enableSubscription(const QString& stockCode, bool enabled = true);
    QList<SubscriptionConfig> getAllSubscriptions() const;
    double getThreshold(const QString& stockCode) const;
    bool isSubscribed(const QString& stockCode) const;
    bool isEnabled(const QString& stockCode) const;
    void addSubscriptions(const QList<SubscriptionConfig>& subscriptions);
    void removeSubscriptions(const QList<QString>& stockCodes);
    void loadFromFile(const QString& filePath = "");
    void saveToFile(const QString& filePath = "");
    int getSubscriptionCount() const;
    int getEnabledSubscriptionCount() const;
signals:
    void subscriptionAdded(const QString& stockCode, double threshold);
    void subscriptionRemoved(const QString& stockCode);
    void thresholdUpdated(const QString& stockCode, double threshold);
    void subscriptionEnabledChanged(const QString& stockCode, bool enabled);
    void subscriptionsChanged();
private:
    explicit QSubscriptionManager(QObject *parent = nullptr);
    ~QSubscriptionManager();
    QMap<QString, SubscriptionConfig> m_subscriptions;
    QString m_configPath;
    mutable QMutex m_mutex;
    QString getDefaultConfigPath() const;
};
#endif