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--
-- All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
-- its licensors.
--
-- For complete copyright and license terms please see the LICENSE at the root of this
-- distribution (the "License"). All use of this software is governed by the License,
-- or, if provided, by the license below or the license accompanying this file. Do not
-- remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--
--
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local ButtonAnimation = 
{
	Properties = 
	{
		IdleAnimName = {default = ""},
		HoverAnimName =  {default = ""},
		ExitAnimName =  {default = ""},
		Button = {default = EntityId()},
	},
	
	Exiting = false,
}

function ButtonAnimation:OnActivate()
	self.interactableHandler = UiInteractableNotificationBus.Connect(self, self.Properties.Button)
	self.buttonHandler = UiButtonNotificationBus.Connect(self, self.Properties.Button)

	self.tickBusHandler = TickBus.Connect(self)
	self.hovering = false
end

function ButtonAnimation:OnTick(deltaTime, timePoint)
	self.tickBusHandler:Disconnect()

	self.canvas = UiElementBus.Event.GetCanvas(self.entityId)

	self.animHandler = UiAnimationNotificationBus.Connect(self, self.canvas)
	
	-- Start the button sequence
	if (self.hovering) then
		UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.HoverAnimName)
	else
		UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.IdleAnimName)
	end
end


function ButtonAnimation:OnDeactivate()
	self.interactableHandler:Disconnect()
	self.buttonHandler:Disconnect()
	self.animHandler:Disconnect()
end

function ButtonAnimation:OnHoverStart()
	self.hovering = true
	if (self.Exiting == false and self.canvas ~= nil) then
		UiAnimationBus.Event.StopSequence(self.canvas, self.Properties.IdleAnimName)
		UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.HoverAnimName)
	end
end

function ButtonAnimation:OnHoverEnd()
	self.hovering = false
	if (self.Exiting == false and self.canvas ~= nil) then
		UiAnimationBus.Event.StopSequence(self.canvas, self.Properties.HoverAnimName)
		UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.IdleAnimName)
	end
end

function ButtonAnimation:OnButtonClick()
	if (UiButtonNotificationBus.GetCurrentBusId() == self.Properties.Button) then	
		UiAnimationBus.Event.StopSequence(self.canvas, self.Properties.HoverAnimName)
		UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.ExitAnimName)
		
		self.Exiting = true
	end	
end

function ButtonAnimation:OnUiAnimationEvent(eventType, sequenceName)
	if (eventType == eUiAnimationEvent_Stopped) then
		if (sequenceName == self.Properties.ExitAnimName) then
			UiAnimationBus.Event.ResetSequence(self.canvas, self.Properties.ExitAnimName)

			if (self.hovering) then
				UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.HoverAnimName)
			else
				UiAnimationBus.Event.StartSequence(self.canvas, self.Properties.IdleAnimName)
			end						
			
			self.Exiting = false
		end
	end
end

return ButtonAnimation