Timestamp.h

/* ============================================
SF2 source code is placed under the MIT license
Copyright (c) 2017 Kauai Labs

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
===============================================
*/

#ifndef SRC_TIME_TIMESTAMP_H_
#define SRC_TIME_TIMESTAMP_H_

#include "../quantity/IQuantity.h"

class Timestamp : public IQuantity {

public:
    enum TimestampResolution { Second, Millisecond, Microsecond, Nanosecond };
    long timestamp;
    TimestampResolution resolution;

    Timestamp() {
        this->timestamp = 0;
        this->resolution = TimestampResolution::Millisecond;
    }

    Timestamp(Timestamp& ts_copy) {
        this->timestamp = ts_copy.timestamp;
        this->resolution = ts_copy.resolution;
    }

    Timestamp(long timestamp, TimestampResolution resolution) {
        this->timestamp = timestamp;
        this->resolution = resolution;
    }

    Timestamp(double seconds, TimestampResolution resolution) {
        this->resolution = resolution;
        this->fromSeconds(seconds);
    }

    ~Timestamp(){}

    long getTimestamp() {
        return this->timestamp;
    }

    void setTimestamp(long new_timestamp) {
        this->timestamp = new_timestamp;
    }

    void setResolution(TimestampResolution r) {
        this->resolution = r;
    }

    TimestampResolution getResolution() {
        return this->resolution;
    }

    static const long MILLISECONDS_PER_SECOND = 1000;
    static const long MICROSECONDS_PER_SECOND = MILLISECONDS_PER_SECOND * 1000;
    static const long NANOSECONDS_PER_SECOND = MICROSECONDS_PER_SECOND * 1000;
    static const long NANOSECONDS_PER_MICROSECOND = 1000;
    static const long MICROSECONDS_PER_MILLISECOND = 1000;
    static const long NANOSECONDS_PER_MILLISECOND = NANOSECONDS_PER_MICROSECOND * 1000;

    long getNanoseconds() {
        switch ( resolution ) {
        case Second:
            return timestamp * NANOSECONDS_PER_SECOND;
        case Millisecond:
            return timestamp * NANOSECONDS_PER_MILLISECOND;
        case Microsecond:
            return timestamp * NANOSECONDS_PER_MICROSECOND;
        case Nanosecond:
        default:
            return timestamp;
        }
    }

    long getMicroseconds() {
        switch ( resolution ) {
        case Second:
            return timestamp * MICROSECONDS_PER_SECOND;
        case Millisecond:
            return timestamp * MICROSECONDS_PER_MILLISECOND;
        case Microsecond:
        default:
            return timestamp;
        case Nanosecond:
            return timestamp / NANOSECONDS_PER_MICROSECOND;
        }
    }

    long getMilliseconds() {
        switch ( resolution ) {
        case Second:
            return timestamp * MILLISECONDS_PER_SECOND;
        case Millisecond:
        default:
            return timestamp;
        case Microsecond:
            return timestamp / MICROSECONDS_PER_MILLISECOND;
        case Nanosecond:
            return timestamp / NANOSECONDS_PER_MILLISECOND;
        }
    }

    double getSeconds() {
        switch ( resolution ) {
        case Second:
            return (double)timestamp;
        case Millisecond:
        default:
            return ((double)timestamp)/MILLISECONDS_PER_SECOND;
        case Microsecond:
            return ((double)timestamp)/MICROSECONDS_PER_SECOND;
        case Nanosecond:
            return ((double)timestamp)/NANOSECONDS_PER_SECOND;
        }
    }

    void fromSeconds(double seconds) {
        switch ( resolution ) {
        case Second:
            timestamp = (long)seconds;
            break;
        case Millisecond:
        default:
            timestamp = (long)(seconds * MILLISECONDS_PER_SECOND);
            break;
        case Microsecond:
            timestamp = (long)(seconds * MICROSECONDS_PER_SECOND);
            break;
        case Nanosecond:
            timestamp = (long)(seconds * NANOSECONDS_PER_SECOND);
            break;
        }
    }

    /* IQuantity */
    bool getPrintableString(vector<string>& printable_string) {
        printable_string.push_back(to_string(timestamp));
        return true;
    }

    bool getContainedQuantities(vector<IQuantity *>& quantities) {
        return false;
    }

    bool getContainedQuantityNames(vector<string>& quantity_names) {
        return false;
    }
};

#endif /* SRC_TIME_TIMESTAMP_H_ */