#ifndef TFARMTASK_H
#define TFARMTASK_H

#include <memory>

#include <QDateTime>
#include "tpersist.h"
#include "tfarmplatforms.h"
#include "tfilepath.h"
#ifdef TFARMAPI

#undef TFARMAPI
#endif

#ifdef WIN32
#ifdef TFARM_EXPORTS
#define TFARMAPI __declspec(dllexport)
#else
#define TFARMAPI __declspec(dllimport)
#endif
#else
#define TFARMAPI
#endif

//------------------------------------------------------------------------------

const int cPortNumber = 51005;

enum TaskState {
	Suspended,
	Waiting,
	Running,
	Completed,
	Aborted,
	TaskUnknown
};

enum FrameState {
	FrameDone,
	FrameFailed
};

enum OverwriteBehavior {
	Overwrite_All = 0,
	Overwrite_NoPaint,
	Overwrite_Off
};

#define RENDER_LICENSE_NOT_FOUND 888

//------------------------------------------------------------------------------

class TFARMAPI TFarmTask : public TPersist
{
public:
	typedef QString Id;

	class TFARMAPI Dependencies
	{
	public:
		Dependencies();
		~Dependencies();

		Dependencies(const Dependencies &);
		Dependencies &operator=(const Dependencies &);

		bool operator==(const Dependencies &);
		bool operator!=(const Dependencies &);

		void add(const QString &id);
		void remove(const QString &id);

		int getTaskCount() const;
		QString getTaskId(int i) const;

	private:
		class Data;
		Data *m_data;
	};

public:
	Id m_id;	   //!< Internal task identifier
	Id m_parentId; //!< Task id of the parent task (if any)

	bool m_isComposerTask; //!< Whether this is a tcomposer task (opposed to tcleanupper task)

	QString m_name;				 //!< User-readable name
	TFilePath m_taskFilePath;	//!< Path of the input file affected by the task
	TFilePath m_outputPath;		 //!< Path of the task's output file
	QString m_callerMachineName; //!< Name of the... caller (submitter?) machine

	int m_priority; //!< Priority value used for scheduling order

	QString m_user;		//!< User who submitted the task
	QString m_hostName; //!< Machine on which the task was submitted

	TaskState m_status; //!< The task's status (completed, work in progress... etc)
	QString m_server;   //!< Server node (name) the task was supplied to

	QDateTime m_submissionDate;
	QDateTime m_startDate;
	QDateTime m_completionDate;

	int m_successfullSteps; //
	int m_failedSteps;		//
	int m_stepCount;		// Why 3 values ? One should be found with the other 2!

	int m_from, m_to, m_step, m_shrink; //!< Range data
	int m_chunkSize;					//!< Sub-tasks size

	int m_multimedia;
	int m_threadsIndex;
	int m_maxTileSizeIndex;

	OverwriteBehavior m_overwrite;
	bool m_onlyVisible;

	TFarmPlatform m_platform;

	Dependencies *m_dependencies;

public:
	TFarmTask(const QString &name = "");

	TFarmTask(const QString &id, const QString &name, const QString &cmdline,
			  const QString &user, const QString &host, int stepCount, int priority);

	TFarmTask(
		const QString &id, const QString &name, bool composerTask,
		const QString &user, const QString &host,
		int stepCount, int priority, const TFilePath &taskFilePath,
		const TFilePath &outputPath,
		int from, int to, int step, int shrink, int multimedia, int chunksize,
		int threadsIndex, int maxTileSizeIndex,
		OverwriteBehavior overwrite, bool onlyvisible);

	virtual ~TFarmTask() { delete m_dependencies; }

	TFarmTask(const TFarmTask &);
	TFarmTask &operator=(const TFarmTask &);

	bool operator==(const TFarmTask &task);
	bool operator!=(const TFarmTask &task);

	virtual int getTaskCount() const { return 1; }
	virtual TFarmTask *getTask(int index) { return this; }

	QString getCommandLine(bool isFarmTask = false) const;
	void parseCommandLine(QString commandLine);

	// TPersist
	void loadData(TIStream &is);
	void saveData(TOStream &os);
	const TPersistDeclaration *getDeclaration() const;
};

//------------------------------------------------------------------------------

class TFARMAPI TFarmTaskGroup : public TFarmTask
{
public:
	TFarmTaskGroup();

	TFarmTaskGroup(
		const QString &id, const QString &name,
		const QString &user,
		const QString &host, int stepCount, int priority, const TFilePath &taskFilePath,
		const TFilePath &outputPath,
		int from, int to, int step, int shrink, int multimedia, int chunksize,
		int threadsIndex, int maxTileSizeIndex);

	TFarmTaskGroup(
		const QString &id, const QString &name,
		const QString &user,
		const QString &host, int stepCount, int priority, const TFilePath &taskFilePath,
		OverwriteBehavior overwrite, bool onlyvisible);

	TFarmTaskGroup(const QString &id, const QString &name, const QString &cmdline,
				   const QString &user, const QString &host, int stepCount, int priority);

	TFarmTaskGroup(const TFarmTaskGroup &src);

	~TFarmTaskGroup();

	void addTask(TFarmTask *task);
	void removeTask(TFarmTask *task);

	int getTaskCount() const;
	TFarmTask *getTask(int index);
	bool changeChunkSize(int chunksize);

	// TPersist
	void loadData(TIStream &is);
	void saveData(TOStream &os);
	const TPersistDeclaration *getDeclaration() const;

private:
	class Imp;
	std::unique_ptr<Imp> m_imp;
};

#endif