/******************************************************************************
 * 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 UnityEngine;
using Spine;

namespace Spine.Unity {
	public class SkeletonDataAsset : ScriptableObject {
		public AtlasAsset[] atlasAssets;
		#if SPINE_TK2D
		public tk2dSpriteCollectionData spriteCollection;
		#endif
		public TextAsset skeletonJSON;
		public float scale = 0.01f;
		public String[] fromAnimation;
		public String[] toAnimation;
		public float[] duration;
		public float defaultMix;
		public RuntimeAnimatorController controller;
		private SkeletonData skeletonData;
		private AnimationStateData stateData;

		void OnEnable () {
			if (atlasAssets == null)
				atlasAssets = new AtlasAsset[0];
		}

		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 Spine.Unity.TK2D.SpriteCollectionAttachmentLoader(spriteCollection);
				skeletonDataScale = (1.0f / (spriteCollection.invOrthoSize * spriteCollection.halfTargetHeight) * scale);
			} 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;
		}
	}

}
