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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 ImageMarkup = 
{
	Properties = 
	{
		AttribInteractables = { default = { EntityId(), EntityId(), EntityId(), EntityId(), EntityId(), EntityId(), EntityId() } },
		AttribEnabledCBs = { default = { EntityId(), EntityId(), EntityId(), EntityId(), EntityId(), EntityId(), EntityId() } },
		
		VAlignDDContent = {default = EntityId()},
		HeightDDContent = {default = EntityId()},
		
		DefaultsButton = {default = EntityId()},
		MarkupText = {default = EntityId()},
	},
	
	-- Attributes
	vAlignIndex = 1,
	heightIndex = 2,
	scaleIndex = 3,
	yOffsetIndex = 4,
	xPaddingIndex = 5,
	lPaddingIndex = 6,
	rPaddingIndex = 7,
	
	numAttributes = 7,
	
	-- Attribute names
	attribNames = { "vAlign", "height", "scale", "yOffset", "xPadding", "lPadding", "rPadding" },
	
	-- Attribute default values
	attribDefaults = { "baseline", "fontAscent", 1, 0, 0, 0, 0 },
	
	-- Attribute current values
	curAttribValues = {},	
}

function ImageMarkup:OnActivate()
	self.notificationHandlers = {}
	self.notificationHandlers[#self.notificationHandlers + 1] = UiButtonNotificationBus.Connect(self, self.Properties.DefaultsButton)
	self.notificationHandlers[#self.notificationHandlers + 1] = UiDropdownNotificationBus.Connect(self, self:GetAttribInteractable(self.vAlignIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiDropdownNotificationBus.Connect(self, self:GetAttribInteractable(self.heightIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiSliderNotificationBus.Connect(self, self:GetAttribInteractable(self.scaleIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiSliderNotificationBus.Connect(self, self:GetAttribInteractable(self.yOffsetIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiSliderNotificationBus.Connect(self, self:GetAttribInteractable(self.xPaddingIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiSliderNotificationBus.Connect(self, self:GetAttribInteractable(self.lPaddingIndex))
	self.notificationHandlers[#self.notificationHandlers + 1] = UiSliderNotificationBus.Connect(self, self:GetAttribInteractable(self.rPaddingIndex))
	
	for i = 0, self.numAttributes - 1 do
		self.notificationHandlers[#self.notificationHandlers + 1] = UiCheckboxNotificationBus.Connect(self, self.Properties.AttribEnabledCBs[i])
	end
	
	self.tickBusHandler = TickBus.Connect(self);
end

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

	self.vAlignOptions = {}
	local numOptions = UiElementBus.Event.GetNumChildElements(self.Properties.VAlignDDContent)
	for i = 0, numOptions - 1 do
		local child = UiElementBus.Event.GetChild(self.Properties.VAlignDDContent, i)
		local name = UiElementBus.Event.GetName(child)
		self.vAlignOptions[name] = child
	end
	
	self.heightOptions = {}
	numOptions = UiElementBus.Event.GetNumChildElements(self.Properties.HeightDDContent)
	for i = 0, numOptions - 1 do
		local child = UiElementBus.Event.GetChild(self.Properties.HeightDDContent, i)
		local name = UiElementBus.Event.GetName(child)
		self.heightOptions[name] = child
	end	
	
	self:SetToDefaults()
end

function ImageMarkup:OnDeactivate()
	for index, handler in ipairs(self.notificationHandlers) do
		handler:Disconnect()
	end
end

function ImageMarkup:GetAttribInteractable(index)
	return self.Properties.AttribInteractables[index - 1]
end

function ImageMarkup:GetAttribIndexFromCheckbox(checkbox)
	for i = 1, self.numAttributes do
		if self.Properties.AttribEnabledCBs[i - 1] == checkbox then
			return i
		end
	end
	
	return -1
end

function ImageMarkup:GetAttribIndexFromInteractable(interactable)
	for i = 1, self.numAttributes do
		if self:GetAttribInteractable(i) == interactable then
			return i
		end
	end
	
	return -1
end

function ImageMarkup:SetToDefaults()
	for i = 1, self.numAttributes do
		self.curAttribValues[i] = self.attribDefaults[i]
	end
	
	UiDropdownBus.Event.SetValue(self:GetAttribInteractable(self.vAlignIndex), self.vAlignOptions[self.curAttribValues[self.vAlignIndex]])
	UiRadioButtonGroupBus.Event.SetState(self.Properties.VAlignDDContent, self.vAlignOptions[self.attribDefaults[self.vAlignIndex]], true)
	UiDropdownBus.Event.SetValue(self:GetAttribInteractable(self.heightIndex), self.heightOptions[self.curAttribValues[self.heightIndex]])
	UiRadioButtonGroupBus.Event.SetState(self.Properties.HeightDDContent, self.heightOptions[self.attribDefaults[self.heightIndex]], true)
	UiSliderBus.Event.SetValue(self:GetAttribInteractable(self.scaleIndex), self.curAttribValues[self.scaleIndex])
	UiSliderBus.Event.SetValue(self:GetAttribInteractable(self.yOffsetIndex), self.curAttribValues[self.yOffsetIndex])
	UiSliderBus.Event.SetValue(self:GetAttribInteractable(self.xPaddingIndex), self.curAttribValues[self.xPaddingIndex])
	UiSliderBus.Event.SetValue(self:GetAttribInteractable(self.lPaddingIndex), self.curAttribValues[self.lPaddingIndex])
	UiSliderBus.Event.SetValue(self:GetAttribInteractable(self.rPaddingIndex), self.curAttribValues[self.rPaddingIndex])
	
	self:SetCheckboxState(self.Properties.AttribEnabledCBs[self.lPaddingIndex - 1], false)
	self:SetCheckboxState(self.Properties.AttribEnabledCBs[self.rPaddingIndex - 1], false)
	
	self:UpdateMarkupText()
end

function ImageMarkup:GetImageTagText(imagePath)
	local tagText = "<img src=" .. '\"' .. imagePath .. '\"'
	
	local attribsString = ""
	for i = 1, self.numAttributes do
		local enabled = UiInteractableBus.Event.IsHandlingEvents(self:GetAttribInteractable(i))
		if enabled then
			if self.curAttribValues[i] ~= self.attribDefaults[i] or i > self.xPaddingIndex then
				attribsString = attribsString .. ' ' .. self.attribNames[i] .. '=' .. '\"' .. self.curAttribValues[i] .. '\"'
			end
		end
	end
	
	tagText = tagText .. attribsString .. "/>"
	
	return tagText
end

function ImageMarkup:UpdateMarkupText()
	local image1TagText = self:GetImageTagText("UI/Textures/LyShineExamples/scroll_box_icon_4")
	local image2TagText = self:GetImageTagText("UI/Textures/LyShineExamples/scroll_box_icon_3")
	
	local markupText = "This text" .. image1TagText .. "contains images using the attribute" .. image2TagText .. "values above."

	UiTextBus.Event.SetText(self.Properties.MarkupText, markupText)
end

function ImageMarkup:HandleCheckboxStateChange(checkbox, checked)
	local attribIndex = self:GetAttribIndexFromCheckbox(checkbox)
	UiInteractableBus.Event.SetIsHandlingEvents(self:GetAttribInteractable(attribIndex), checked)
end

function ImageMarkup:SetCheckboxState(checkbox, checked)
	UiCheckboxBus.Event.SetState(checkbox, checked)
	self:HandleCheckboxStateChange(checkbox, checked)
end

-- Button handlers

function ImageMarkup:OnButtonClick()
	self:SetToDefaults()
end

-- Dropdown handlers

function ImageMarkup:OnDropdownValueChanged(entityId)
	local dropdown = UiDropdownNotificationBus.GetCurrentBusId()
	local attribIndex = self:GetAttribIndexFromInteractable(dropdown)
	self.curAttribValues[attribIndex] = UiElementBus.Event.GetName(entityId)
	
	self:UpdateMarkupText()
end

-- Slider handlers

function ImageMarkup:OnSliderValueChanging(value)
	self:OnSliderValueChanged(value)
end

function ImageMarkup:OnSliderValueChanged(value)
	local slider = UiSliderNotificationBus.GetCurrentBusId()
	local attribIndex = self:GetAttribIndexFromInteractable(slider)
	local roundedValue = tonumber(string.format("%.2f", value))
	self.curAttribValues[attribIndex] = roundedValue
	
	self:UpdateMarkupText()
end

-- Checkbox handlers

function ImageMarkup:OnCheckboxStateChange(checked)
	local checkbox = UiCheckboxNotificationBus.GetCurrentBusId()
	self:HandleCheckboxStateChange(checkbox, checked)
	
	self:UpdateMarkupText()
end

return ImageMarkup