time.h

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#ifndef TIME_H
#define TIME_H TIME_H
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>
#include <time.h>

//TODO: check out boosts classes
class Time{
        public:
        Time(int timestamp_ = 0) : timestamp(timestamp_){}
        static Time fromBigEndianChars32(const unsigned char* start){
                return Time((start[0] << 24) + (start[1] << 16) + (start[2] << 8) + start[3]); 
        }
        string str(const std::string& format = "%c") const{
                if(timestamp == -1) return "(undefined)";
                char buffer[40];
                time_t t = timestamp;
                tm* timeinfo = gmtime(&t);
                strftime(buffer, 39, format.c_str(), timeinfo);
                return buffer;
        }
        string datestr() const{
                return str("%x");
        }
        friend std::ostream& operator<<(std::ostream& o, const Time& d){
                return o << d.str();
        }
        bool operator>(const Time& other) const{ return timestamp > other.timestamp; }
        bool operator<(const Time& other) const{ return timestamp < other.timestamp; }
        int timestamp;
};

class Duration{
        public:
        Duration(int length_ = 0) : length(length_){}
        string str() const{
                ostringstream o;
                o << (*this);
                return o.str();
        }
        friend std::ostream& operator<<(std::ostream& o, const Duration& d){
                int l = d.length;
                if(l < 0){
                        o << "-";
                        l = -l;
                }
                if(l > 86400){
                        o << (l / 86400) << " " << tr("days") << " ";
                        l %= 86400;
                }
                return o << (l / 3600) << ":" << std::setw(2) << std::setfill('0') << ((l / 60) % 60) << ":" << std::setw(2) << std::setfill('0') << (l % 60);
        }
        int length;
};

Duration operator-(const Time& a, const Time& b){
        return Duration(a.timestamp - b.timestamp);
}

string formatRange(const Time& begin, const Time& end){
        Duration d = end - begin;
        if(d.length < 86400) return tr("from") + " " + begin.str() + " " + tr("on for") + " " + d.str();
        return tr("from") + " " + begin.str() + " " + tr("to") + " " + end.str() + " (" + d.str() + ")";
}

string formatMinutes(int minutes){
        ostringstream o;
        if(minutes < 24*60)
                o << std::setw(2) << std::setfill('0') << (minutes / 60) << ":" << std::setw(2) << std::setfill('0') << (minutes % 60);
        else o << (minutes / (24*60)) << " days " << (minutes / (24*60*60)) << " h " << ((minutes / (24*60)) % 60) << " min";
        return o.str();
}


#endif

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