/******************************************************************************
 * Spine Runtimes Software License
 * Version 2.1
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to install, execute and perform the Spine Runtimes
 * Software (the "Software") solely for internal use. Without the written
 * permission of Esoteric Software (typically granted by licensing Spine), you
 * may not (a) modify, translate, adapt or otherwise create derivative works,
 * improvements of the Software or develop new applications using the Software
 * or (b) remove, delete, alter or obscure any trademarks or any copyright,
 * trademark, patent or other intellectual property or proprietary rights
 * notices on or in the Software, including any copy thereof. Redistributions
 * in binary or source form must include this license and terms.
 * 
 * THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL ESOTERIC SOFTARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

using System;
using System.IO;
using System.Collections.Generic;
using UnityEngine;
using Spine;

public class SkeletonDataAsset : ScriptableObject
{
    public AtlasAsset[] atlasAssets;
#if SPINE_TK2D
	public tk2dSpriteCollectionData spriteCollection;
#endif
    public TextAsset skeletonJSON;
    public float scale = 1;
    public String[] fromAnimation;
    public String[] toAnimation;
    public float[] duration;
    public float defaultMix;
    public RuntimeAnimatorController controller;
    private SkeletonData skeletonData;
    private AnimationStateData stateData;

    public void Reset()
    {
        skeletonData = null;
        stateData = null;
    }

    public SkeletonData GetSkeletonData(bool quiet)
    {
        if (atlasAssets == null)
        {
            atlasAssets = new AtlasAsset[0];
            if (!quiet)
                Debug.LogError("Atlas not set for SkeletonData asset: " + name, this);
            Reset();
            return null;
        }

        if (skeletonJSON == null)
        {
            if (!quiet)
                Debug.LogError("Skeleton JSON file not set for SkeletonData asset: " + name, this);
            Reset();
            return null;
        }

#if !SPINE_TK2D
        if (atlasAssets.Length == 0)
        {
            Reset();
            return null;
        }
#else
		if (atlasAssets.Length == 0 && spriteCollection == null) {
			Reset();
			return null;
		}
#endif

        Atlas[] atlasArr = new Atlas[atlasAssets.Length];
        for (int i = 0; i < atlasAssets.Length; i++)
        {
            if (atlasAssets[i] == null)
            {
                Reset();
                return null;
            }
            atlasArr[i] = atlasAssets[i].GetAtlas();
            if (atlasArr[i] == null)
            {
                Reset();
                return null;
            }
        }

        if (skeletonData != null)
            return skeletonData;

        AttachmentLoader attachmentLoader;
        float skeletonDataScale;

#if !SPINE_TK2D
        attachmentLoader = new AtlasAttachmentLoader(atlasArr);
        skeletonDataScale = scale;
#else
		if (spriteCollection != null) {
			attachmentLoader = new SpriteCollectionAttachmentLoader(spriteCollection)
			skeletonDataScale = (1.0f / (spriteCollection.invOrthoSize * spriteCollection.halfTargetHeight) * scale) * 100f;
		} else {
			if (atlasArr.Length == 0) {
				Reset();
				if (!quiet) Debug.LogError("Atlas not set for SkeletonData asset: " + name, this);
				return null;
			}
			attachmentLoader = new AtlasAttachmentLoader(atlasArr);
			skeletonDataScale = scale;
		}
#endif

        try
        {
            //var stopwatch = new System.Diagnostics.Stopwatch();
            if (skeletonJSON.name.ToLower().Contains(".skel"))
            {
                var input = new MemoryStream(skeletonJSON.bytes);
                var binary = new SkeletonBinary(attachmentLoader);
                binary.Scale = skeletonDataScale;
                //stopwatch.Start();
                skeletonData = binary.ReadSkeletonData(input);
            }
            else
            {
                var input = new StringReader(skeletonJSON.text);
                var json = new SkeletonJson(attachmentLoader);
                json.Scale = skeletonDataScale;
                //stopwatch.Start();
                skeletonData = json.ReadSkeletonData(input);
            }
            //stopwatch.Stop();
            //Debug.Log(stopwatch.Elapsed);
        }
        catch (Exception ex)
        {
            if (!quiet)
                Debug.LogError("Error reading skeleton JSON file for SkeletonData asset: " + name + "\n" + ex.Message + "\n" + ex.StackTrace, this);
            return null;
        }

        stateData = new AnimationStateData(skeletonData);
        FillStateData();

        return skeletonData;
    }

    public void FillStateData()
    {
        if (stateData == null)
            return;

        stateData.DefaultMix = defaultMix;
        for (int i = 0, n = fromAnimation.Length; i < n; i++)
        {
            if (fromAnimation[i].Length == 0 || toAnimation[i].Length == 0)
                continue;
            stateData.SetMix(fromAnimation[i], toAnimation[i], duration[i]);
        }
    }

    public AnimationStateData GetAnimationStateData()
    {
        if (stateData != null)
            return stateData;
        GetSkeletonData(false);
        return stateData;
    }
}