#ifndef NOTIFY_H_
#define NOTIFY_H_

#include <iostream>
#include <map>
#include <string>
#include <vector>
#include <utility>

struct notify_event
{
	std::string file;
	uint32_t mask;
};

class Notify
{
private:
	// Stream where to log errors
	std::ostream& m_log_stream;

	// inotify FD
	int m_notify_fd;

	// Map of watch FDs
	std::map<std::string, int> m_watch_fds;

	std::vector<std::pair<int, notify_event>> get_watch_events() const;

public:
	Notify(std::ostream& log_stream = std::cout);
	~Notify();

	void add_file(const std::string& filename, uint32_t mask);
	void add_list(const std::vector<std::string>& files, uint32_t mask);
	void add_list(const std::vector<std::pair<std::string, uint32_t>>& files);
	void remove_file(const std::string& filename);
	void remove_list(const std::vector<std::string>& files);
	void clear();
	size_t size() const;

	std::vector<std::string> get_list() const;
	void set_list(std::vector<std::pair<std::string, uint32_t>>& files);

	std::vector<notify_event> get_events() const;
};

#endif // NOTIFY_H_