#ifndef FILETASK_H

#define FILETASK_H

#include "content.h"

#include <memory>

#include <functional>

#include "fellow.h"

#include <string>

using namespace std;

enum class FileTaskType{

Download,

Upload

};

enum class FileTaskState{

NotStart,

Running,

Finish,

Error,

Canceled

};

class FileTask;

class IFileTaskObserver

{

public:

virtual void onStateChanged(FileTask* fileTask) = 0;

virtual void onProgress(FileTask* fileTask) = 0;

};

class FileTask

{

public:

FileTask();

FileTask(shared_ptr<FileContent> fileContent, FileTaskType type);

void setObserver(IFileTaskObserver* observer);

public:

void setProcess(int val);

void setState(FileTaskState val, const string& msg="");

void setFellow(shared_ptr<Fellow> fellow);

void cancel();

bool hasCancelPending();

public:

shared_ptr<Fellow> fellow() const;

int getProcess() const;

FileTaskState getState() const;

string getDetailInfo() const;

shared_ptr<FileContent> getContent() const;

FileTaskType type() const;

string getTaskTypeDes() const;

private:

shared_ptr<Fellow> mFellow;//要发送给的用户，或文件来自该用户

int mProcess=0;

FileTaskState mState = FileTaskState::NotStart;

shared_ptr<FileContent> mContent;

IFileTaskObserver* mObserver;

FileTaskType mType = FileTaskType::Upload;

string mMsg;

bool mCancelPending=false;

int mNotifySize;

int mLastProcess=0;

};

#endif // FILETASK_H