/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated January 1, 2020. Replaces all prior versions.
 *
 * Copyright (c) 2013-2020, Esoteric Software LLC
 *
 * Integration of the Spine Runtimes into software or otherwise creating
 * derivative works of the Spine Runtimes is permitted under the terms and
 * conditions of Section 2 of the Spine Editor License Agreement:
 * http://esotericsoftware.com/spine-editor-license
 *
 * Otherwise, it is permitted to integrate the Spine Runtimes into software
 * or otherwise create derivative works of the Spine Runtimes (collectively,
 * "Products"), provided that each user of the Products must obtain their own
 * Spine Editor license and redistribution of the Products in any form must
 * include this license and copyright notice.
 *
 * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "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 LLC BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
 * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) 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
 * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef SPINE_SKELETONRENDERER_H_
#define SPINE_SKELETONRENDERER_H_

#include "cocos2d.h"
#include <spine/spine.h>

namespace spine {

	class AttachmentVertices;

	/* Draws a skeleton. */
	class SP_API SkeletonRenderer: public ax::Node, public ax::BlendProtocol {
	public:
		CREATE_FUNC(SkeletonRenderer);
		static SkeletonRenderer* createWithSkeleton(Skeleton* skeleton, bool ownsSkeleton = false, bool ownsSkeletonData = false);
		static SkeletonRenderer* createWithData (SkeletonData* skeletonData, bool ownsSkeletonData = false);
		static SkeletonRenderer* createWithFile (const std::string& skeletonDataFile, Atlas* atlas, float scale = 1);
		static SkeletonRenderer* createWithFile (const std::string& skeletonDataFile, const std::string& atlasFile, float scale = 1);

		void update (float deltaTime) override;
		void draw (ax::Renderer* renderer, const ax::Mat4& transform, uint32_t transformFlags) override;
		ax::Rect getBoundingBox () const override;
		void onEnter () override;
		void onExit () override;

		Skeleton* getSkeleton() const;

		void setTimeScale(float scale);
		float getTimeScale() const;

		/*  */
		void setDebugSlotsEnabled(bool enabled);
		bool getDebugSlotsEnabled() const;

		void setDebugBonesEnabled(bool enabled);
		bool getDebugBonesEnabled() const;

		void setDebugMeshesEnabled(bool enabled);
		bool getDebugMeshesEnabled() const;

		void setDebugBoundingRectEnabled(bool enabled);
		bool getDebugBoundingRectEnabled() const;

		// --- Convenience methods for common Skeleton_* functions.
		void updateWorldTransform ();

		void setToSetupPose ();
		void setBonesToSetupPose ();
		void setSlotsToSetupPose ();

		/* Returns 0 if the bone was not found. */
		Bone* findBone (const std::string& boneName) const;
		/* Returns 0 if the slot was not found. */
		Slot* findSlot (const std::string& slotName) const;

		/* Sets the skin used to look up attachments not found in the SkeletonData defaultSkin. Attachments from the new skin are
		 * attached if the corresponding attachment from the old skin was attached.
		 * @param skin May be empty string ("") for no skin.*/
		void setSkin (const std::string& skinName);
		/** @param skin May be 0 for no skin.*/
		void setSkin (const char* skinName);

		/* Returns 0 if the slot or attachment was not found. */
		Attachment* getAttachment (const std::string& slotName, const std::string& attachmentName) const;
		/* Returns false if the slot or attachment was not found.
		 * @param attachmentName May be empty string ("") for no attachment. */
		bool setAttachment (const std::string& slotName, const std::string& attachmentName);
		/* @param attachmentName May be 0 for no attachment. */
		bool setAttachment (const std::string& slotName, const char* attachmentName);

		/* Enables/disables two color tinting for this instance. May break batching */
		void setTwoColorTint(bool enabled);
		/* Whether two color tinting is enabled */
		bool isTwoColorTint();

		/* Sets the vertex effect to be used, set to 0 to disable vertex effects */
		void setVertexEffect(VertexEffect* effect);

		/* Sets the range of slots that should be rendered. Use -1, -1 to clear the range */
		void setSlotsRange(int startSlotIndex, int endSlotIndex);

		// --- BlendProtocol
		void setBlendFunc (const ax::BlendFunc& blendFunc)override;
		const ax::BlendFunc& getBlendFunc () const override;
		void setOpacityModifyRGB (bool value) override;
		bool isOpacityModifyRGB () const override;

		SkeletonRenderer ();
		SkeletonRenderer(Skeleton* skeleton, bool ownsSkeleton = false, bool ownsSkeletonData = false, bool ownsAtlas = false);
		SkeletonRenderer (SkeletonData* skeletonData, bool ownsSkeletonData = false);
		SkeletonRenderer (const std::string& skeletonDataFile, Atlas* atlas, float scale = 1);
		SkeletonRenderer (const std::string& skeletonDataFile, const std::string& atlasFile, float scale = 1);

		virtual ~SkeletonRenderer ();

		void initWithSkeleton(Skeleton* skeleton, bool ownsSkeleton = false, bool ownsSkeletonData = false, bool ownsAtlas = false);
		void initWithData (SkeletonData* skeletonData, bool ownsSkeletonData = false);
		void initWithJsonFile (const std::string& skeletonDataFile, Atlas* atlas, float scale = 1);
		void initWithJsonFile (const std::string& skeletonDataFile, const std::string& atlasFile, float scale = 1);
		void initWithBinaryFile (const std::string& skeletonDataFile, Atlas* atlas, float scale = 1);
		void initWithBinaryFile (const std::string& skeletonDataFile, const std::string& atlasFile, float scale = 1);

		virtual void initialize ();

	protected:
		void setSkeletonData (SkeletonData* skeletonData, bool ownsSkeletonData);
		void setupGLProgramState(bool twoColorTintEnabled);
		virtual void drawDebug (ax::Renderer* renderer, const ax::Mat4& transform, uint32_t transformFlags);

		bool _ownsSkeletonData;
		bool _ownsSkeleton;
		bool _ownsAtlas = false;
		Atlas* _atlas;
		AttachmentLoader* _attachmentLoader;
		ax::CustomCommand _debugCommand;
		ax::BlendFunc _blendFunc;
		bool _premultipliedAlpha;
		Skeleton* _skeleton;
		float _timeScale;
		bool _debugSlots;
		bool _debugBones;
		bool _debugMeshes;
		bool _debugBoundingRect;
		SkeletonClipping* _clipper;
		VertexEffect* _effect;
		ax::Rect _boundingRect;

		int _startSlotIndex;
		int _endSlotIndex;
		bool _twoColorTint;
	};

}

#endif /* SPINE_SKELETONRENDERER_H_ */