-------------------------------------------------------------------------------
-- 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.
-------------------------------------------------------------------------------
local setmetatable = setmetatable

local SkeletonData = {}
SkeletonData.__index = SkeletonData

function SkeletonData.new ()
	local self = {
		name,
		bones = {},
		slots = {},
		skins = {},
		defaultSkin = nil,
		events = {},
		animations = {},
		ikConstraints = {},
		transformConstraints = {},
		pathConstraints = {},
		width, height,
		version, hash, imagesPath,
		slotNameIndices = {}
	}
	setmetatable(self, SkeletonData)

	return self
end

function SkeletonData:findBone (boneName)
	if not boneName then error("boneName cannot be nil.", 2) end
	for i,bone in ipairs(self.bones) do
		if bone.name == boneName then return bone end
	end
	return nil
end

function SkeletonData:findBoneIndex (boneName)
	if not boneName then error("boneName cannot be nil.", 2) end
	for i,bone in ipairs(self.bones) do
		if bone.name == boneName then return i end
	end
	return -1
end

function SkeletonData:findSlot (slotName)
	if not slotName then error("slotName cannot be nil.", 2) end
	for i,slot in ipairs(self.slots) do
		if slot.name == slotName then return slot end
	end
	return nil
end

function SkeletonData:findSlotIndex (slotName)
	if not slotName then error("slotName cannot be nil.", 2) end
	return self.slotNameIndices[slotName] or -1
end

function SkeletonData:findSkin (skinName)
	if not skinName then error("skinName cannot be nil.", 2) end
	for i,skin in ipairs(self.skins) do
		if skin.name == skinName then return skin end
	end
	return nil
end

function SkeletonData:findEvent (eventName)
	if not eventName then error("eventName cannot be nil.", 2) end
	for i,event in ipairs(self.events) do
		if event.name == eventName then return event end
	end
	return nil
end

function SkeletonData:findAnimation (animationName)
	if not animationName then error("animationName cannot be nil.", 2) end
	for i,animation in ipairs(self.animations) do
		if animation.name == animationName then return animation end
	end
	return nil
end

function SkeletonData:findIkConstraint (constraintName)
	if not constraintName then error("constraintName cannot be nil.", 2) end
	for i,constraint in ipairs(self.ikConstraints) do
		if constraint.name == constraintName then return constraint end
	end
	return nil
end

function SkeletonData:findTransformConstraint (constraintName)
	if not constraintName then error("constraintName cannot be nil.", 2) end
	for i,constraint in ipairs(self.transformConstraints) do
		if constraint.name == constraintName then return constraint end
	end
	return nil
end

function SkeletonData:findPathConstraint (constraintName)
	if not constraintName then error("constraintName cannot be nil.", 2) end
	for i,constraint in ipairs(self.pathConstraints) do
		if constraint.name == constraintName then return constraint end
	end
	return nil
end

function SkeletonData:findPathConstraintIndex (constraintName)
	if not constraintName then error("constraintName cannot be nil.", 2) end
	for i,constraint in ipairs(self.pathConstraints) do
		if constraint.name == constraintName then return i end
	end
	return -1
end

return SkeletonData