-- CORE UTILITY METHODS
function Icon:set(settingName, value, iconState, setAdditional)
	local settingDetail = self._settingsDictionary[settingName]
	assert(settingDetail ~= nil, ("setting '%s' does not exist"):format(settingName))
	if type(iconState) == "string" then
		iconState = iconState:lower()
	end
	local previousValue = self:get(settingName, iconState)

	if iconState == "hovering" then
		-- Apply hovering state if valid
		settingDetail.hoveringValue = value
		if setAdditional ~= "_ignorePrevious" then
			settingDetail.additionalValues["previous_"..iconState] = previousValue
		end
		if type(setAdditional) == "string" then
			settingDetail.additionalValues[setAdditional.."_"..iconState] = previousValue
		end
		self:_update(settingName)

	else
		-- Update the settings value
		local toggleState = iconState
		local settingType = settingDetail.type
		if settingType == "toggleable" then
			local valuesToSet = {}
			if toggleState == "deselected" or toggleState == "selected" then
				table.insert(valuesToSet, toggleState)
			else
				table.insert(valuesToSet, "deselected")
				table.insert(valuesToSet, "selected")
				toggleState = nil
			end
			for i, v in pairs(valuesToSet) do
				settingDetail.values[v] = value
				if setAdditional ~= "_ignorePrevious" then
					settingDetail.additionalValues["previous_"..v] = previousValue
				end
				if type(setAdditional) == "string" then
					settingDetail.additionalValues[setAdditional.."_"..v] = previousValue
				end
			end
		else
			settingDetail.value = value
			if type(setAdditional) == "string" then
				if setAdditional ~= "_ignorePrevious" then
					settingDetail.additionalValues["previous"] = previousValue
				end
				settingDetail.additionalValues[setAdditional] = previousValue
			end
		end

		-- Check previous and new are not the same
		if previousValue == value then
			return self, "Value was already set"
		end

		-- Update appearances of associated instances
		local currentToggleState = self:getToggleState()
		if not self._updateAfterSettingAll and settingDetail.instanceNames and (currentToggleState == toggleState or toggleState == nil) then
			local ignoreTweenAction = (settingName == "iconSize" and previousValue and previousValue.X.Scale == 1)
			local tweenInfo = (settingDetail.tweenAction and not ignoreTweenAction and self:get(settingDetail.tweenAction)) or TweenInfo.new(0)
			self:_update(settingName, currentToggleState, tweenInfo)
		end
	end

	-- Call any methods present
	if settingDetail.callMethods then
		for _, callMethod in pairs(settingDetail.callMethods) do
			callMethod(self, value, iconState)
		end
	end
	
	-- Call any signals present
	if settingDetail.callSignals then
		for _, callSignal in pairs(settingDetail.callSignals) do
			callSignal:Fire()
		end
	end
	return self
end

function Icon:setAdditionalValue(settingName, setAdditional, value, iconState)
	local settingDetail = self._settingsDictionary[settingName]
	assert(settingDetail ~= nil, ("setting '%s' does not exist"):format(settingName))
	local stringMatch = setAdditional.."_"
	if iconState then
		stringMatch = stringMatch..iconState
	end
	for key, _ in pairs(settingDetail.additionalValues) do
		if string.match(key, stringMatch) then
			settingDetail.additionalValues[key] = value
		end
	end
end

function Icon:get(settingName, iconState, getAdditional)
	local settingDetail = self._settingsDictionary[settingName]
	assert(settingDetail ~= nil, ("setting '%s' does not exist"):format(settingName))
	local valueToReturn, additionalValueToReturn
	if typeof(iconState) == "string" then
		iconState = iconState:lower()
	end

	--if ((self.hovering and settingDetail.hoveringValue) or iconState == "hovering") and getAdditional == nil then
	if (iconState == "hovering") and getAdditional == nil then
		valueToReturn = settingDetail.hoveringValue
		additionalValueToReturn = type(getAdditional) == "string" and settingDetail.additionalValues[getAdditional.."_"..iconState]
	end

	local settingType = settingDetail.type
	if settingType == "toggleable" then
		local toggleState = ((iconState == "deselected" or iconState == "selected") and iconState) or self:getToggleState()
		if additionalValueToReturn == nil then
			additionalValueToReturn = type(getAdditional) == "string" and settingDetail.additionalValues[getAdditional.."_"..toggleState]
		end
		if valueToReturn == nil then
			valueToReturn = settingDetail.values[toggleState]
		end
	
	else
		if additionalValueToReturn == nil then
			additionalValueToReturn = type(getAdditional) == "string" and settingDetail.additionalValues[getAdditional]
		end
		if valueToReturn == nil then
			valueToReturn = settingDetail.value
		end
	end

	return valueToReturn, additionalValueToReturn
end

function Icon:getHovering(settingName)
	local settingDetail = self._settingsDictionary[settingName]
	assert(settingDetail ~= nil, ("setting '%s' does not exist"):format(settingName))
	return settingDetail.hoveringValue
end

function Icon:getToggleState(isSelected)
	isSelected = isSelected or self.isSelected
	return (isSelected and "selected") or "deselected"
end

function Icon:getIconState()
	if self.hovering then
		return "hovering"
	else
		return self:getToggleState()
	end
end

function Icon:_update(settingName, toggleState, customTweenInfo)
	local settingDetail = self._settingsDictionary[settingName]
	assert(settingDetail ~= nil, ("setting '%s' does not exist"):format(settingName))
	toggleState = toggleState or self:getToggleState()
	local value = settingDetail.value or (settingDetail.values and settingDetail.values[toggleState])
	if self.hovering and settingDetail.hoveringValue then
		value = settingDetail.hoveringValue
	end
	if value == nil then return end
	local tweenInfo = customTweenInfo or (settingDetail.tweenAction and settingDetail.tweenAction ~= "" and self:get(settingDetail.tweenAction)) or self:get("toggleTransitionInfo") or TweenInfo.new(0.15)
	local propertyName = settingDetail.propertyName
	local invalidPropertiesTypes = {
		["string"] = true,
		["NumberSequence"] = true,
		["Text"] = true,
		["EnumItem"] = true,
		["ColorSequence"] = true,
	}
	local uniqueSetting = self._uniqueSettingsDictionary[settingName]
	local newValue = value
	if settingDetail.useForcedGroupValue then
		newValue = settingDetail.forcedGroupValue
	end
	if settingDetail.instanceNames then
		for _, instanceName in pairs(settingDetail.instanceNames) do
			local instance = self.instances[instanceName]
			local propertyType = typeof(instance[propertyName])
			local cannotTweenProperty = invalidPropertiesTypes[propertyType] or typeof(instance) == "table"
			if uniqueSetting then
				uniqueSetting(settingName, instance, propertyName, newValue)
			elseif cannotTweenProperty then
				instance[propertyName] = value
			else
				tweenService:Create(instance, tweenInfo, {[propertyName] = newValue}):Play()
			end
			--
			if settingName == "iconSize" and instance[propertyName] ~= newValue then
				self.updated:Fire()
			end
			--
		end
	end
end

function Icon:_updateAll(iconState, customTweenInfo)
	for settingName, settingDetail in pairs(self._settingsDictionary) do
		if settingDetail.instanceNames then
			self:_update(settingName, iconState, customTweenInfo)
		end
	end
end

function Icon:_updateHovering(customTweenInfo)
	for settingName, settingDetail in pairs(self._settingsDictionary) do
		if settingDetail.instanceNames and settingDetail.hoveringValue ~= nil then
			self:_update(settingName, nil, customTweenInfo)
		end
	end
end

function Icon:_updateStateOverlay(transparency, color)
	local stateOverlay = self.instances.iconOverlay
	stateOverlay.BackgroundTransparency = transparency or 1
	stateOverlay.BackgroundColor3 = color or Color3.new(1, 1, 1)
end

function Icon:setTheme(theme, updateAfterSettingAll)
	self._updateAfterSettingAll = updateAfterSettingAll
	for settingsType, settingsDetails in pairs(theme) do
		if settingsType == "toggleable" then
			for settingName, settingValue in pairs(settingsDetails.deselected) do
				if not self.lockedSettings[settingName] then
					self:set(settingName, settingValue, "both")
				end
			end
			for settingName, settingValue in pairs(settingsDetails.selected) do
				if not self.lockedSettings[settingName] then
					self:set(settingName, settingValue, "selected")
				end
			end
		else
			for settingName, settingValue in pairs(settingsDetails) do
				if not self.lockedSettings[settingName] then
					local settingDetail = self._settingsDictionary[settingName]
					if settingsType == "action" and settingDetail == nil then
						settingDetail = {}
						self._settingsDictionary[settingName] = {}
					end
					self:set(settingName, settingValue)
				end
			end
		end
	end
	self._updateAfterSettingAll = nil
	if updateAfterSettingAll then
		self:_updateAll()
	end
	return self
end

function Icon:getInstance(instanceName)
	return self.instances[instanceName]
end

function Icon:setInstance(instanceName, instance)
	local originalInstance = self.instances[instanceName]
	self.instances[instanceName] = instance
	if originalInstance then
		originalInstance:Destroy()
	end
	return self
end

function Icon:getSettingDetail(targetSettingName)
	for _, settingsDetails in pairs(self._settings) do
		for settingName, settingDetail in pairs(settingsDetails) do
			if settingName == targetSettingName then
				return settingDetail
			end
		end
	end
	return false
end

function Icon:modifySetting(settingName, dictionary)
	local settingDetail = self:getSettingDetail(settingName)
	for key, value in pairs(dictionary) do
		settingDetail[key] = value
	end
	return self
end

function Icon:convertLabelToNumberSpinner(numberSpinner)
	-- This updates the number spinners appearance
	self:set("iconLabelSize", UDim2.new(1,0,1,0))
	numberSpinner.Parent = self:getInstance("iconButton")

	-- This creates a fake iconLabel which updates the property of all descendant spinner TextLabels when indexed
	local textLabel = {}
	setmetatable(textLabel, {__newindex = function(_, index, value)
		for _, label in pairs(numberSpinner.Frame:GetDescendants()) do
			if label:IsA("TextLabel") then
				label[index] = value
			end
		end
	end})

	-- This overrides existing instances and settings so that they update the spinners properties (instead of the old textlabel)
	local iconButton = self:getInstance("iconButton")
	iconButton.ZIndex = 0
	self:setInstance("iconLabel", textLabel)
	self:modifySetting("iconText", {instanceNames = {}}) -- We do this to prevent text being modified within the metatable above
	self:setInstance("iconLabelSpinner", numberSpinner.Frame)
	local settingsToConvert = {"iconLabelVisible", "iconLabelAnchorPoint", "iconLabelPosition", "iconLabelSize"}
	for _, settingName in pairs(settingsToConvert) do
		self:modifySetting(settingName, {instanceNames = {"iconLabelSpinner"}})
	end

	-- This applies all the values we just updated
	self:_updateAll()
	return self
end

function Icon:setEnabled(bool)
	self.enabled = bool
	self.instances.iconContainer.Visible = bool
	self.updated:Fire()
	return self
end

function Icon:setName(string)
	self.name = string
	self.instances.iconContainer.Name = string
	return self
end

function Icon:setProperty(propertyName, value)
	self[propertyName] = value
	return self
end

function Icon:_playClickSound()
	local clickSound = self.instances.clickSound
	if clickSound.SoundId ~= nil and #clickSound.SoundId > 0 and clickSound.Volume > 0 then
		local clickSoundCopy = clickSound:Clone()
		clickSoundCopy.Parent = clickSound.Parent
		clickSoundCopy:Play()
		debris:AddItem(clickSoundCopy, clickSound.TimeLength)
	end
end

function Icon:select(byIcon)
	if self.locked then return self end
	self.isSelected = true
	self:_setToggleItemsVisible(true, byIcon)
	self:_updateNotice()
	self:_updateAll()
	self:_playClickSound()
	if #self.dropdownIcons > 0 or #self.menuIcons > 0 then
		IconController:_updateSelectionGroup()
	end
    self.selected:Fire()
    self.toggled:Fire(self.isSelected)
	return self
end

function Icon:deselect(byIcon)
	if self.locked then return self end
	self.isSelected = false
	self:_setToggleItemsVisible(false, byIcon)
	self:_updateNotice()
	self:_updateAll()
	self:_playClickSound()
	if #self.dropdownIcons > 0 or #self.menuIcons > 0 then
		IconController:_updateSelectionGroup()
	end
    self.deselected:Fire()
    self.toggled:Fire(self.isSelected)
	return self
end

function Icon:notify(clearNoticeEvent, noticeId)
	coroutine.wrap(function()
		if not clearNoticeEvent then
			clearNoticeEvent = self.deselected
		end
		if self._parentIcon then
			self._parentIcon:notify(clearNoticeEvent)
		end
		
		local notifComplete = Signal.new()
		local endEvent = self._endNotices:Connect(function()
			notifComplete:Fire()
		end)
		local customEvent = clearNoticeEvent:Connect(function()
			notifComplete:Fire()
		end)
		
		noticeId = noticeId or httpService:GenerateGUID(true)
		self.notices[noticeId] = {
			completeSignal = notifComplete,
			clearNoticeEvent = clearNoticeEvent,
		}
		self.totalNotices += 1
		self:_updateNotice()

		self.notified:Fire(noticeId)
		notifComplete:Wait()
		
		endEvent:Disconnect()
		customEvent:Disconnect()
		notifComplete:Disconnect()
		
		self.totalNotices -= 1
		self.notices[noticeId] = nil
		self:_updateNotice()
	end)()
	return self
end

function Icon:_updateNotice()
	local enabled = true
	if self.totalNotices < 1 then
		enabled = false
	end
	-- Deselect
	if not self.isSelected then
		if (#self.dropdownIcons > 0 or #self.menuIcons > 0) and self.totalNotices > 0 then
			enabled = true
		end
	end
	-- Select
	if self.isSelected then
		if #self.dropdownIcons > 0 or #self.menuIcons > 0 then
			enabled = false
		end
	end
	local value = (enabled and 0) or 1
	self:set("noticeImageTransparency", value)
	self:set("noticeTextTransparency", value)
	self.instances.noticeLabel.Text = (self.totalNotices < 100 and self.totalNotices) or "99+"
end

function Icon:clearNotices()
	self._endNotices:Fire()
	return self
end

function Icon:disableStateOverlay(bool)
	if bool == nil then
		bool = true
	end
	local stateOverlay = self.instances.iconOverlay
	stateOverlay.Visible = not bool
	return self
end