#ifndef SNAPSHOT_CLASS_H_INCLUDED
#define SNAPSHOT_CLASS_H_INCLUDED
#include <map>
#include <string>
#include "t_extra.h"
#include <memory>
using namespace std;

typedef unsigned long long ID_T;
typedef unsigned long long ULL;



/**
 * File structure:
 * 
 * 0  ID
 * 1  Date
 * 
 * 2  [list of paths...]
 */


#define SNAPSHOT_FILE_EXTENSION ".snap"
#define SNAPSHOT_FOLDER "Snapshots"


struct basic_snap_data{
    string date = "";
    string path = "";
    ID_T id = 0;
};

/* prototype declared here for use in other .cpp files...*/
map<unsigned int, basic_snap_data> get_snapshot_info();


/* The snapshot_class will take a filename as an argument.
 If not given one, it will create a new snapshot.*/
class snapshot_class{
    
public:
    
    
    //constructors/destructors
    snapshot_class(const string&);
    snapshot_class(const char*);
    snapshot_class();
    snapshot_class(const char&); //for memory management purposes...
    ~snapshot_class();
    
    
    //public functions
    ID_T gid();
    string gdate();
    map<unsigned int, string> gsnap();
    void del();
    void clear();
    
private:
    
    //variables
    string filename = string();
    string date = chrono_date().asc_time;
    ID_T id = 0;
    shared_ptr<map<unsigned int, string>> snapshot;
    
    
    //functions
    void constructor_tasks(const string&);
    void load_snapshot(const string&);
    
};

#endif