text: // Copyright (c) 2014-2019, The MKEcoin Project
  //
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  //
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef TRANSACTIONHISTORY_H
  #define TRANSACTIONHISTORY_H
  
  #include <functional>
  
  #include <QObject>
  #include <QList>
  #include <QReadWriteLock>
  #include <QDateTime>
  
  namespace MKEcoin {
  struct TransactionHistory;
  }
  
  class TransactionInfo;
  
  class TransactionHistory : public QObject
  {
      Q_OBJECT
      Q_PROPERTY(int count READ count)
      Q_PROPERTY(QDateTime firstDateTime READ firstDateTime NOTIFY firstDateTimeChanged)
      Q_PROPERTY(QDateTime lastDateTime READ lastDateTime NOTIFY lastDateTimeChanged)
      Q_PROPERTY(int minutesToUnlock READ minutesToUnlock)
      Q_PROPERTY(bool locked READ locked)
  
  public:
      Q_INVOKABLE bool transaction(int index, std::function<void (TransactionInfo &)> callback);
      // Q_INVOKABLE TransactionInfo * transaction(const QString &id);
      Q_INVOKABLE void refresh(quint32 accountIndex);
      Q_INVOKABLE QString writeCSV(quint32 accountIndex, QString out);
      quint64 count() const;
      QDateTime firstDateTime() const;
      QDateTime lastDateTime() const;
      quint64 minutesToUnlock() const;
      bool locked() const;
  
  signals:
      void refreshStarted() const;
      void refreshFinished() const;
      void firstDateTimeChanged() const;
      void lastDateTimeChanged() const;
  
  public slots:
  
  
  private:
      explicit TransactionHistory(MKEcoin::TransactionHistory * pimpl, QObject *parent = 0);
  
  private:
      friend class Wallet;
      mutable QReadWriteLock m_lock;
      MKEcoin::TransactionHistory * m_pimpl;
      mutable QList<TransactionInfo*> m_tinfo;
      mutable QDateTime   m_firstDateTime;
      mutable QDateTime   m_lastDateTime;
      mutable int m_minutesToUnlock;
      // history contains locked transfers
      mutable bool m_locked;
  
  };
  
  #endif // TRANSACTIONHISTORY_H
  