// ----------------------------------------------------------------------------
//
// copyright            : (C) 2008 by Eran Ifrah
// file name            : worker_thread.h
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
// ----------------------------------------------------------------------------
#ifndef _ProcessReaderThread_H_
#define _ProcessReaderThread_H_

#include "wx/event.h"
#include "wx/thread.h"
#include <atomic>
#include <deque>

class IProcess;
/**
 * Worker Thread class
 * usually user should define the ProcessRequest method
 */
class /*WXDLLIMPEXP_CL*/ ProcessReaderThread : public wxThread
{
protected:
    wxEvtHandler* m_notifiedWindow = nullptr;
    IProcess* m_process = nullptr;
    std::atomic_bool m_suspend;
    std::atomic_bool m_is_suspended;

protected:
    void NotifyTerminated();

public:
    /**
     * Default constructor.
     */
    ProcessReaderThread();

    /**
     * Destructor.
     */
    virtual ~ProcessReaderThread();

    /**
     * Thread execution point.
     */
    virtual void* Entry();

    /**
     * Called when the thread exits
     * whether it terminates normally or is stopped with Delete() (but not when it is Kill()'ed!)
     */
    virtual void OnExit(){};

    /**
     * Set the window to be notified when a change was done
     * between current source file tree and the actual tree.
     * \param evtHandler
     */
    void SetNotifyWindow(wxEvtHandler* evtHandler) { m_notifiedWindow = evtHandler; }

    /**
     * Stops the thread
     * This function returns only when the thread is terminated.
     * \note This call must be called from the context of other thread (e.g. main thread)
     */
    void Stop();

    /**
     * Start the thread as joinable thread.
     * \note This call must be called from the context of other thread (e.g. main thread)
     */
    void Start(int priority = WXTHREAD_DEFAULT_PRIORITY);

    void SetProcess(IProcess* proc) { m_process = proc; }

    /**
     * @brief suspend the reader thread
     */
    void Suspend();

    /**
     * @brief resume the reader thread
     */
    void Resume();
};

//wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_OUTPUT, clProcessEvent);
//wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_STDERR, clProcessEvent);
//wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_TERMINATED, clProcessEvent);
wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_OUTPUT, wxThreadEvent);
wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_STDERR, wxThreadEvent);
wxDECLARE_EXPORTED_EVENT(/*WXDLLIMPEXP_CL*/, wxEVT_ASYNC_PROCESS_TERMINATED, wxThreadEvent);

//wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_OUTPUT, clProcessEvent);
//wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_STDERR, clProcessEvent);
//wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_TERMINATED, clProcessEvent);
#endif // _ProcessReaderThread_H_
