/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2017                                                               *
 *                                                                                       *
 * 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.                                         *
 ****************************************************************************************/

namespace openspace {

template <typename T>
Timeline<T>::Timeline()
    : _nextKeyframeId(1)
{}

template <typename T>
Timeline<T>::~Timeline() {}

template <typename T>
void Timeline<T>::addKeyframe(double timestamp, T data) {
    Keyframe<T> keyframe(++_nextKeyframeId, timestamp, data);
    auto iter = std::upper_bound(_keyframes.begin(), _keyframes.end(), keyframe, &compareKeyframeTimes);
    _keyframes.insert(iter, keyframe);
}

template <typename T>
void Timeline<T>::removeKeyframesAfter(double timestamp, bool inclusive) {
    auto iter = inclusive
        ? std::lower_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareKeyframeTimeWithTime)
        : std::upper_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareTimeWithKeyframeTime);

    _keyframes.erase(iter, _keyframes.end());
}

template <typename T>
void Timeline<T>::removeKeyframesBefore(double timestamp, bool inclusive) {
    auto iter = inclusive
        ? std::upper_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareTimeWithKeyframeTime)
        : std::lower_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareKeyframeTimeWithTime);

    _keyframes.erase(_keyframes.begin(), iter);
}

template <typename T>
void Timeline<T>::removeKeyframesBetween(double begin, double end, bool inclusiveBegin, bool inclusiveEnd) {
    auto beginIter = inclusiveBegin
        ? std::lower_bound(_keyframes.begin(), _keyframes.end(), begin, &compareKeyframeTimeWithTime)
        : std::upper_bound(_keyframes.begin(), _keyframes.end(), begin, &compareTimeWithKeyframeTime);

    auto endIter = inclusiveEnd
        ? std::upper_bound(beginIter, _keyframes.end(), end, &compareTimeWithKeyframeTime)
        : std::lower_bound(beginIter, _keyframes.end(), end, &compareKeyframeTimeWithTime);

    _keyframes.erase(beginIter, endIter);
}

template <typename T>
void Timeline<T>::clearKeyframes() {
    _keyframes.clear();
}

template <typename T>
void Timeline<T>::removeKeyframe(size_t id) {
    _keyframes.erase(std::remove_if(_keyframes.begin(), _keyframes.end(), [id] (Keyframe<T> keyframe) {
        return keyframe.id == id;
    }), _keyframes.end());
}

template <typename T>
size_t Timeline<T>::nKeyframes() const {
    return _keyframes.size();
}

template <typename T>
const Keyframe<T>* Timeline<T>::firstKeyframeAfter(double timestamp, bool inclusive) const {
    auto it = inclusive
        ? std::lower_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareKeyframeTimeWithTime)
        : std::upper_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareTimeWithKeyframeTime);
    if (it == _keyframes.end()) {
        return nullptr;
    }
    return &(*it);
}

template <typename T>
const Keyframe<T>* Timeline<T>::lastKeyframeBefore(double timestamp, bool inclusive) const {
    auto it = inclusive
        ? std::upper_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareTimeWithKeyframeTime)
        : std::lower_bound(_keyframes.begin(), _keyframes.end(), timestamp, &compareKeyframeTimeWithTime);
    if (it == _keyframes.begin()) {
        return nullptr;
    }
    it--;
    return &(*it);
}


template<typename T>
const std::deque<Keyframe<T>>& Timeline<T>::keyframes() const {
    return _keyframes;
}


}