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/*
 The MIT License (MIT)

 Copyright (c) 2013 devnewton 

 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.
 */
package im.bci.jnuit.lwjgl.animation;

import im.bci.jnuit.animation.IPlay;
import im.bci.jnuit.animation.PlayMode;
import im.bci.jnuit.animation.IAnimation;
import im.bci.jnuit.lwjgl.animation.NanimParser.Frame;

import java.util.ArrayList;
import java.util.Map;

/**
 *
 * @author devnewton
 */
public class Nanimation implements IAnimation {

    public class Play implements IPlay {

        public int currentFrameIndex;
        public long currentTime;
        public PlayMode mode = PlayMode.LOOP;
        private State state = State.STOPPED;

        @Override
        public String getName() {
            return Nanimation.this.name;
        }

        @Override
        public NanimationFrame getCurrentFrame() {
            return frames.get(currentFrameIndex);
        }

        @Override
        public void start(PlayMode mode) {
            this.state = State.STARTED;
            this.mode = mode;
            this.currentTime = 0;
            this.currentFrameIndex = 0;
        }

        @Override
        public void restart() {
            stop();
            start(mode);
        }

        @Override
        public void stop() {
            state = State.STOPPED;
            currentTime = 0;
            currentFrameIndex = 0;
        }

        @Override
        public boolean isStopped() {
            return state == State.STOPPED;
        }

        @Override
        public void update(long elapsedTime) {

            if (state == State.STOPPED) {
                return;
            }

            this.currentTime += elapsedTime;
            if (currentTime >= totalDuration) {

                switch (mode) {
                    case ONCE:
                        currentFrameIndex = frames.size() - 1;
                        state = State.STOPPED;
                        return;
                    case LOOP:
                        currentTime %= totalDuration;
                        currentFrameIndex = 0;
                        break;
                }
            }

            while (currentTime > frames.get(currentFrameIndex).endTime) {
                ++this.currentFrameIndex;
            }
        }

        @Override
        public PlayMode getMode() {
            return mode;
        }
    }

    enum State {

        STARTED, STOPPED
    }
    private final ArrayList frames = new ArrayList();
    private long totalDuration;// milliseconds
    private final String name;

    public Nanimation(String name) {
        this.name = name;
    }

    public Nanimation(im.bci.jnuit.lwjgl.animation.NanimParser.Animation nanimation,
            Map images) {
        name = nanimation.getName();
        frames.ensureCapacity(nanimation.getFramesCount());
        for (Frame nframe : nanimation.getFramesList()) {
            NanimationFrame frame = addFrame(
                    images.get(nframe.getImageName()), nframe.getDuration());
            frame.u1 = nframe.getU1();
            frame.v1 = nframe.getV1();
            frame.u2 = nframe.getU2();
            frame.v2 = nframe.getV2();
        }
    }

    private NanimationFrame addFrame(NanimationImage image, long duration) {
        final NanimationFrame frame = new NanimationFrame(image, duration);
        frames.add(frame);
        totalDuration += duration;
        frame.endTime = totalDuration;
        return frame;
    }

    public void addFrame(NanimationImage image, int duration, float u1, float v1, float u2, float v2) {
        final NanimationFrame frame = new NanimationFrame(image, duration);
        frames.add(frame);
        totalDuration += duration;
        frame.endTime = totalDuration;
        frame.u1 = u1;
        frame.v1 = v1;
        frame.u2 = u2;
        frame.v2 = v2;
    }

    @Override
    public Play start(PlayMode mode) {
        if (!frames.isEmpty()) {
            Play play = new Play();
            play.start(mode);
            return play;
        } else {
            return null;
        }
    }

    /**
     * Call play.stop
     *
     * @param play
     */
    @Override
    public void stop(IPlay play) {
        if (null != play) {
            play.stop();
        }
    }

    @Override
    public String getName() {
        return name;
    }
}