/******************************************************************************
 * Spine Runtimes Software License
 * Version 2.3
 * 
 * Copyright (c) 2013-2015, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to use, install, execute and perform the Spine
 * Runtimes Software (the "Software") and derivative works solely for personal
 * or internal use. Without the written permission of Esoteric Software (see
 * Section 2 of the Spine Software License Agreement), 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 SOFTWARE 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;
	}
}
