local Plater = _G.Plater
local GameCooltip = GameCooltip2
local DF = DetailsFramework
local _
local UnitPower = _G.UnitPower
local UnitPowerMax = _G.UnitPowerMax
local abs = _G.abs

local IS_WOW_PROJECT_MAINLINE = WOW_PROJECT_ID == WOW_PROJECT_MAINLINE
local IS_WOW_PROJECT_NOT_MAINLINE = WOW_PROJECT_ID ~= WOW_PROJECT_MAINLINE
local IS_WOW_PROJECT_CLASSIC_ERA = WOW_PROJECT_ID == WOW_PROJECT_CLASSIC
local IS_WOW_PROJECT_CLASSIC_WRATH = IS_WOW_PROJECT_NOT_MAINLINE and ClassicExpansionAtLeast and LE_EXPANSION_WRATH_OF_THE_LICH_KING and ClassicExpansionAtLeast(LE_EXPANSION_WRATH_OF_THE_LICH_KING)
--local IS_WOW_PROJECT_CLASSIC_CATACLYSM = IS_WOW_PROJECT_NOT_MAINLINE and ClassicExpansionAtLeast and LE_EXPANSION_CATACLYSM and ClassicExpansionAtLeast(LE_EXPANSION_CATACLYSM)

local PlayerClass = select(2, UnitClass("player"))

local CONST_SPECID_MONK_WINDWALKER = 269
local CONST_SPECID_MAGE_ARCANE = 62
local CONST_SPECID_ROGUE_ASSASSINATION = 259
local CONST_SPECID_ROGUE_OUTLAW = 260
local CONST_SPECID_ROGUE_SUBTLETY = 261
local CONST_SPECID_DRUID_FERAL = 103
local CONST_SPECID_PALADIN_HOLY = 65
local CONST_SPECID_PALADIN_PROTECTION = 66
local CONST_SPECID_PALADIN_RETRIBUTION = 70
local CONST_SPECID_WARLOCK_AFFLICTION = 265
local CONST_SPECID_WARLOCK_DEMONOLOGY = 266
local CONST_SPECID_WARLOCK_DESTRUCTION = 267
local CONST_SPECID_DK_UNHOLY = 252
local CONST_SPECID_DK_FROST = 251
local CONST_SPECID_DK_BLOOD = 250
local CONST_SPECID_EVOKER_DEVASTATION = 1467
local CONST_SPECID_EVOKER_PRESERVATION = 1468
local CONST_SPECID_EVOKER_AUGMENTATION = 1473

local CONST_NUM_RESOURCES_WIDGETS = PlayerClass == "DEATHKNIGHT" and 6 or 10
local CONST_WIDGET_WIDTH = 20
local CONST_WIDGET_HEIGHT = 20

--store the time of the last combo point gained in order to play the show animation when a combo point is awarded
local lastComboPointGainedTime = 0


--when 'runOnNextFrame' is used instead of 'C_Timer.After', it's to indicate the func will skip the current frame and run on the next one
local runOnNextFrame = function(func)
	_G.C_Timer.After(0, func)
end

--[=[
	resource frame: the frame which is anchored into the health bar, controls the size, scale and position
	resource bar: is anchored (setallpoints) into the resource frame, hold all combo points textures and animations
	widget: is each individual widget representing a single resource

	default settings:
	alignment settings
	resource_padding = 1,

	size settings:
	block_size = 20,
	block_texture_background = "Interface\\COMMON\\Indicator-Gray"
	block_texture_artwork = "Interface\\COMMON\\Indicator-Yellow"
	block_texture_overlay = "Interface\\CHARACTERFRAME\\TempPortraitAlphaMaskSmall"
--]=]

--this table store the resource creation functions, these functions are declared in the Plater_Resources_Frames file
local resourceWidgetCreationFunctions = {}
function Plater.Resources.GetResourceWidgetCreationTable()
	return resourceWidgetCreationFunctions
end

function Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(specId)
	--function to create the resource bar
	return resourceWidgetCreationFunctions[specId]
end

--store functions to create the widgets for the class and the function to update them
local resourceWidgetsFunctions = {} --this table has created when only monk combo point was finished, perhaps in the future this need to be more organized

--store functions used to create the resource bar for each type of resource
local resourceBarCreateFuncByEnumName = {}

--power
local PowerEnum = Enum.PowerType
local SPELL_POWER_MANA = SPELL_POWER_MANA or (PowerEnum and PowerEnum.Mana) or 0
local SPELL_POWER_RAGE = SPELL_POWER_RAGE or (PowerEnum and PowerEnum.Rage) or 1
local SPELL_POWER_FOCUS = SPELL_POWER_FOCUS or (PowerEnum and PowerEnum.Focus) or 2
local SPELL_POWER_ENERGY = SPELL_POWER_ENERGY or (PowerEnum and PowerEnum.Energy) or 3
local SPELL_POWER_COMBO_POINTS = SPELL_POWER_COMBO_POINTS or (PowerEnum and PowerEnum.ComboPoints) or 4
local SPELL_POWER_RUNES = SPELL_POWER_RUNES or (PowerEnum and PowerEnum.Runes) or 5
local SPELL_POWER_RUNIC_POWER = SPELL_POWER_RUNIC_POWER or (PowerEnum and PowerEnum.RunicPower) or 6
local SPELL_POWER_SOUL_SHARDS = SPELL_POWER_SOUL_SHARDS or (PowerEnum and PowerEnum.SoulShards) or 7
local SPELL_POWER_LUNAR_POWER = SPELL_POWER_LUNAR_POWER or (PowerEnum and PowerEnum.LunarPower) or 8
local SPELL_POWER_HOLY_POWER = SPELL_POWER_HOLY_POWER  or (PowerEnum and PowerEnum.HolyPower) or 9
local SPELL_POWER_ALTERNATE_POWER = SPELL_POWER_ALTERNATE_POWER or (PowerEnum and PowerEnum.Alternate) or 10
local SPELL_POWER_MAELSTROM = SPELL_POWER_MAELSTROM or (PowerEnum and PowerEnum.Maelstrom) or 11
local SPELL_POWER_CHI = SPELL_POWER_CHI or (PowerEnum and PowerEnum.Chi) or 12
local SPELL_POWER_INSANITY = SPELL_POWER_INSANITY or (PowerEnum and PowerEnum.Insanity) or 13
local SPELL_POWER_OBSOLETE = SPELL_POWER_OBSOLETE or (PowerEnum and PowerEnum.Obsolete) or 14
local SPELL_POWER_OBSOLETE2 = SPELL_POWER_OBSOLETE2 or (PowerEnum and PowerEnum.Obsolete2) or 15
local SPELL_POWER_ARCANE_CHARGES = SPELL_POWER_ARCANE_CHARGES or (PowerEnum and PowerEnum.ArcaneCharges) or 16
local SPELL_POWER_FURY = SPELL_POWER_FURY or (PowerEnum and PowerEnum.Fury) or 17
local SPELL_POWER_PAIN = SPELL_POWER_PAIN or (PowerEnum and PowerEnum.Pain) or 18
local SPELL_POWER_ESSENCE = SPELL_POWER_ESSENCE or (PowerEnum and PowerEnum.Essence) or 19

local specsWithResource =  {
	[CONST_SPECID_MONK_WINDWALKER] = true,
	[CONST_SPECID_MAGE_ARCANE] = true,
	[CONST_SPECID_ROGUE_ASSASSINATION] = true,
	[CONST_SPECID_ROGUE_OUTLAW] = true,
	[CONST_SPECID_ROGUE_SUBTLETY] = true,
	[CONST_SPECID_DRUID_FERAL] = true,
	[CONST_SPECID_PALADIN_HOLY] = true,
	[CONST_SPECID_PALADIN_PROTECTION] = true,
	[CONST_SPECID_PALADIN_RETRIBUTION] = true,
	[CONST_SPECID_WARLOCK_AFFLICTION] = true,
	[CONST_SPECID_WARLOCK_DEMONOLOGY] = true,
	[CONST_SPECID_WARLOCK_DESTRUCTION] = true,
	[CONST_SPECID_DK_UNHOLY] = true,
	[CONST_SPECID_DK_FROST] = true,
	[CONST_SPECID_DK_BLOOD] = true,
	[CONST_SPECID_EVOKER_DEVASTATION] = true,
	[CONST_SPECID_EVOKER_PRESERVATION] = true,
	[CONST_SPECID_EVOKER_AUGMENTATION] = true,
}



local resourceTypes = {
	[SPELL_POWER_INSANITY] = true, --shadow priest
	[SPELL_POWER_CHI] = true, --monk
	[SPELL_POWER_HOLY_POWER] = true, --paladins
	[SPELL_POWER_LUNAR_POWER] = true, --balance druids
	[SPELL_POWER_SOUL_SHARDS] = true, --warlock affliction
	[SPELL_POWER_COMBO_POINTS] = true, --combo points
	[SPELL_POWER_MAELSTROM] = true, --shamans
	[SPELL_POWER_PAIN] = true, --demonhunter tank
	[SPELL_POWER_RUNES] = true, --dk
	[SPELL_POWER_ARCANE_CHARGES] = true, --mage
	[SPELL_POWER_FURY] = true, --warrior demonhunter dps
	[SPELL_POWER_ESSENCE] = true, --evoker
}

local energyTypes = {
	[SPELL_POWER_MANA] = true,
	[SPELL_POWER_RAGE] = true,
	[SPELL_POWER_ENERGY] = true,
	[SPELL_POWER_RUNIC_POWER] = true,
	[SPELL_POWER_ESSENCE] = true,
}

local resourcePowerType = {
	[SPELL_POWER_COMBO_POINTS] = SPELL_POWER_ENERGY, --combo points
	[SPELL_POWER_SOUL_SHARDS] = SPELL_POWER_MANA, --warlock
	[SPELL_POWER_LUNAR_POWER] = SPELL_POWER_MANA, --druid
	[SPELL_POWER_HOLY_POWER] = SPELL_POWER_MANA, --paladin
	[SPELL_POWER_INSANITY] = SPELL_POWER_MANA, --shadowpriest
	[SPELL_POWER_MAELSTROM] = SPELL_POWER_MANA, --shaman
	[SPELL_POWER_CHI] = SPELL_POWER_MANA, --monk
	[SPELL_POWER_PAIN] = SPELL_POWER_ENERGY, --demonhuinter
	[SPELL_POWER_RUNES] = SPELL_POWER_RUNIC_POWER, --dk
	[SPELL_POWER_ARCANE_CHARGES] = SPELL_POWER_MANA, --mage
	[SPELL_POWER_FURY] = SPELL_POWER_RAGE, --warrior
	[SPELL_POWER_ESSENCE] = SPELL_POWER_MANA, --evoker
}

-- the power types which update functions should update on
local classPowerTypes = {
	["ROGUE"] = "COMBO_POINTS",
	["MONK"] = "CHI",
	["PALADIN"] = "HOLY_POWER",
	["WARLOCK"] = "SOUL_SHARDS",
	["DRUID"] = "COMBO_POINTS",
	["MAGE"] = "ARCANE_CHARGES",
	["DEATHKNIGHT"] = "RUNES",
	["EVOKER"] = "ESSENCE",
}

local doesClassUseResource = function(class)
	return classPowerTypes[class]
end

local doesSpecUseResource = function(specId)
	return specsWithResource[specId]
end

--these power types can active a combo point function
local powerTypesFilter = {
	["COMBO_POINTS"] = true,
	["CHI"] = true,
	["HOLY_POWER"] = true,
	["SOUL_SHARDS"] = true,
	["ARCANE_CHARGES"] = true,
	["RUNES"] = true,
	["ESSENCE"] = true,
}

local eventsFilter = {
	["UNIT_POWER_POINT_CHARGE"] = true,
	["RUNE_POWER_UPDATE"] = true,
	["RUNE_TYPE_UPDATE"] = IS_WOW_PROJECT_NOT_MAINLINE,
	["UPDATE_SHAPESHIFT_FORM"] = true,
}

local CONST_ENUMNAME_COMBOPOINT = "ComboPoints"
local CONST_ENUMNAME_HOLYPOWER = "HolyPower"
local CONST_ENUMNAME_RUNES = "Runes"
local CONST_ENUMNAME_ARCANECHARGES = "ArcaneCharges"
local CONST_ENUMNAME_CHI = "Chi"
local CONST_ENUMNAME_SOULCHARGES = "SoulShards"
local CONST_ENUMNAME_ESSENCE = "Essence"

--cache
local DB_USE_PLATER_RESOURCE_BAR = false
local DB_PLATER_RESOURCE_BAR_ON_PERSONAL = false
local DB_PLATER_RESOURCE_BAR_ANCHOR

--local DB_PLATER_RESOURCE_BAR_HEIGHT
local DB_PLATER_RESOURCE_BAR_SCALE
local DB_PLATER_RESOURCE_PADDING
local DB_PLATER_RESOURCE_GROW_DIRECTON
local DB_PLATER_RESOURCE_SHOW_DEPLETED
local DB_PLATER_RESOURCE_SHOW_NUMBER

local getPlateFrameForResourceFrame = function()
	local plateFrame = nil
	if (not DB_USE_PLATER_RESOURCE_BAR) then
		-- do nothing

	elseif (not DB_PLATER_RESOURCE_BAR_ON_PERSONAL or IS_WOW_PROJECT_NOT_MAINLINE) then
		--target nameplate
		plateFrame = C_NamePlate.GetNamePlateForUnit("target")

	elseif (IS_WOW_PROJECT_MAINLINE) then
		--personal bar
		plateFrame = C_NamePlate.GetNamePlateForUnit("player")
	end

	return plateFrame
end

--Plater.Resources

--when plater in the main file refreshes its upvalues, this function is also called
--called from plater.lua on Plater.RefreshDBUpvalues()
	function Plater.Resources.RefreshResourcesDBUpvalues()
		local profile = Plater.db.profile

		--resourceGlobalSettings: where options for all resources are stored
		local resourceGlobalSettings = profile.resources_settings.global_settings

		DB_USE_PLATER_RESOURCE_BAR = resourceGlobalSettings.show
		DB_PLATER_RESOURCE_BAR_ON_PERSONAL = resourceGlobalSettings.personal_bar
		DB_PLATER_RESOURCE_BAR_ANCHOR = resourceGlobalSettings.anchor
		--DB_PLATER_RESOURCE_BAR_HEIGHT = resourceGlobalSettings.width
		DB_PLATER_RESOURCE_BAR_SCALE = resourceGlobalSettings.scale
		DB_PLATER_RESOURCE_PADDING = resourceGlobalSettings.padding
		DB_PLATER_RESOURCE_GROW_DIRECTON = resourceGlobalSettings.grow_direction
		DB_PLATER_RESOURCE_SHOW_DEPLETED = resourceGlobalSettings.show_depleted
		DB_PLATER_RESOURCE_SHOW_NUMBER = resourceGlobalSettings.show_number

		--check if the frame exists if the player opt-in to use plater resources
		if (DB_USE_PLATER_RESOURCE_BAR) then
			local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
			if (not mainResourceFrame) then
				C_Timer.After(0, function()
					--create on next frame
					Plater.Resources.CreateMainResourceFrame()
					Plater.Resources.UpdateResourceFrameToUse()
					Plater.Resources.UpdateResourceFramePosition()
				end)
			else
				Plater.Resources.CreateMainResourceFrame()
				Plater.Resources.UpdateResourceFrameToUse()
				Plater.Resources.UpdateResourceFramePosition()

				local resourceBar = Plater.Resources.GetResourceBarInUse()
				--characters without resources to show may not have a resource bar created for them
				if (not resourceBar) then
					return
				end

				--amount of resources the player has now
				local currentResources = PlayerClass == "DEATHKNIGHT" and 6 or UnitPower("player", Plater.Resources.playerResourceId)

				--resources amount got updated?
				if (currentResources) then
					--which update method to use
					if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
						Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources)
					else
						Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources)
					end
				end

				--update the resource bar
				Plater.Resources.UpdateResourceBar(nil, resourceBar)
			end
		else
			--player opt-out of using plater resources on this character
			Plater.Resources.HidePlaterResourceFrame()
		end
	end

--base frame for the class or spec resource bar, it's a child of the main resource frame 'PlaterNameplatesResourceFrame'
--the function passed is responsible to build textures and animations
	local createResourceBar = function(parent, frameName, func, widgetWidth, widgetHeight)
		local resourceBar = CreateFrame("frame", frameName, parent)
		resourceBar:EnableMouse(false)
		resourceBar:EnableMouseWheel(false)

		--store all widgets
		resourceBar.widgets = {}
		--store all background textures (created on plater_resources_frames), this texture is the default texture shown when the combo point isn't active
		resourceBar.widgetsBackground = {}

		--create widgets which are frames holding textures and animations
		if (func) then
			for i = 1, CONST_NUM_RESOURCES_WIDGETS do
				local newWidget = func(resourceBar, "$parentCPO" .. i)
				resourceBar.widgets[#resourceBar.widgets + 1] = newWidget
				newWidget:EnableMouse(false)
				newWidget:EnableMouseWheel(false)
				newWidget:SetSize(widgetWidth or CONST_WIDGET_WIDTH, widgetHeight or CONST_WIDGET_HEIGHT)
				newWidget:Hide()

				local CPOID = DF:CreateLabel(newWidget, i, 12, "white", nil, nil, nil, "overlay")
				CPOID:SetPoint("bottom", newWidget, "top", 0, 5)
				CPOID:Hide()
				newWidget.numberId = CPOID
			end
		end

		return resourceBar
	end
	
	local function updateWotLKDKRuneTextures(resourceBar)
		if IS_WOW_PROJECT_NOT_MAINLINE then
			--wrath classic
			local RUNETYPE_BLOOD = 1
			local RUNETYPE_FROST = 2
			local RUNETYPE_UNHOLY = 3
			local RUNETYPE_DEATH = 4
			local iconTextures = {}
			iconTextures[RUNETYPE_BLOOD] = "Interface\\PlayerFrame\\UI-PlayerFrame-Deathknight-Blood"
			iconTextures[RUNETYPE_FROST] = "Interface\\PlayerFrame\\UI-PlayerFrame-Deathknight-Frost"
			iconTextures[RUNETYPE_UNHOLY] = "Interface\\PlayerFrame\\UI-PlayerFrame-Deathknight-Unholy"
			iconTextures[RUNETYPE_DEATH] = "Interface\\PlayerFrame\\UI-PlayerFrame-Deathknight-Death"
			for i =1, #resourceBar.widgets do
				local runeType = GetRuneType(i)
				resourceBar.widgets[i].texture:SetTexture(iconTextures[runeType])
				resourceBar.widgets[i].texture:Show()
			end
		end
	end

--> functions for class and specs resources
	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_CHI] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_MONK_WINDWALKER)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentMonk2Resource", resourceWidgetCreationFunc, 25, 25) --windwalker chi
		mainResourceFrame.widgetWidth = 25
		mainResourceFrame.widgetHeight = 25
		mainResourceFrame.resourceBars[CONST_SPECID_MONK_WINDWALKER] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_CHI
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnResourceChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_CHI] = newResourceBar
		return newResourceBar
	end

	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_ARCANECHARGES] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_MAGE_ARCANE)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentArcaneMageResource", resourceWidgetCreationFunc)
		mainResourceFrame.resourceBars[CONST_SPECID_MAGE_ARCANE] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_ARCANE_CHARGES
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnResourceChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_ARCANECHARGES] = newResourceBar
		return newResourceBar
	end

	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_COMBOPOINT] = function(mainResourceFrame)
		local size = IS_WOW_PROJECT_MAINLINE and 20 or 13
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_ROGUE_OUTLAW)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentRogueResource", resourceWidgetCreationFunc, size, size)
		mainResourceFrame.widgetWidth = size
		mainResourceFrame.widgetHeight = size
		mainResourceFrame.resourceBars[CONST_SPECID_ROGUE_ASSASSINATION] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_ROGUE_OUTLAW] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_ROGUE_SUBTLETY] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_DRUID_FERAL] = newResourceBar

		newResourceBar.resourceId = SPELL_POWER_COMBO_POINTS
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnComboPointsChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_COMBOPOINT] = newResourceBar
		return newResourceBar
	end

	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_SOULCHARGES] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_WARLOCK_AFFLICTION)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentWarlockResource", resourceWidgetCreationFunc, 17, 22)
		mainResourceFrame.widgetWidth = 17
		mainResourceFrame.widgetHeight = 22
		mainResourceFrame.resourceBars[CONST_SPECID_WARLOCK_AFFLICTION] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_WARLOCK_DEMONOLOGY] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_WARLOCK_DESTRUCTION] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_SOUL_SHARDS
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnSoulChardsChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_SOULCHARGES] = newResourceBar
		return newResourceBar
	end

	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_HOLYPOWER] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_PALADIN_RETRIBUTION)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentPaladinResource", resourceWidgetCreationFunc, 25, 19)
		mainResourceFrame.widgetWidth = 25
		mainResourceFrame.widgetHeight = 19
		mainResourceFrame.resourceBars[CONST_SPECID_PALADIN_HOLY] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_PALADIN_PROTECTION] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_PALADIN_RETRIBUTION] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_HOLY_POWER
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnResourceChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_HOLYPOWER] = newResourceBar
		return newResourceBar
	end

	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_RUNES] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_DK_FROST)
		mainResourceFrame.widgetWidth = IS_WOW_PROJECT_MAINLINE and 16 or 18--24
		mainResourceFrame.widgetHeight = IS_WOW_PROJECT_MAINLINE and 16 or 18--24
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentDeathKnightResource", resourceWidgetCreationFunc, mainResourceFrame.widgetWidth, mainResourceFrame.widgetHeight)
		mainResourceFrame.resourceBars[CONST_SPECID_DK_UNHOLY] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_DK_FROST] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_DK_BLOOD] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_RUNES
		
		-- for rune sorting
		newResourceBar.runeIndexes = {};
		for i = 1, #newResourceBar.widgets do
			tinsert(newResourceBar.runeIndexes, i); 
		end
		
		if IS_WOW_PROJECT_MAINLINE then
			newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnRunesChanged
		else
			newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnRunesChangedWotLK
			updateWotLKDKRuneTextures(newResourceBar)
		end
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_RUNES] = newResourceBar
		return newResourceBar
	end
	
	resourceBarCreateFuncByEnumName[CONST_ENUMNAME_ESSENCE] = function(mainResourceFrame)
		local resourceWidgetCreationFunc = Plater.Resources.GetCreateResourceWidgetFunctionForSpecId(CONST_SPECID_EVOKER_DEVASTATION)
		local newResourceBar = createResourceBar(mainResourceFrame, "$parentEvokerResource", resourceWidgetCreationFunc, 24, 24)
		mainResourceFrame.widgetWidth = 24
		mainResourceFrame.widgetHeight = 24
		mainResourceFrame.resourceBars[CONST_SPECID_EVOKER_DEVASTATION] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_EVOKER_PRESERVATION] = newResourceBar
		mainResourceFrame.resourceBars[CONST_SPECID_EVOKER_AUGMENTATION] = newResourceBar
		newResourceBar.resourceId = SPELL_POWER_ESSENCE
		newResourceBar.updateResourceFunc = resourceWidgetsFunctions.OnEssenceChanged
		tinsert(mainResourceFrame.allResourceBars, newResourceBar)
		mainResourceFrame.resourceBarsByEnumName[CONST_ENUMNAME_ESSENCE] = newResourceBar
		return newResourceBar
	end

--> this funtion is called once at the logon, it initializes the main frame
	function Plater.Resources.CreateMainResourceFrame()
		if (not DB_USE_PLATER_RESOURCE_BAR) then
			--ignore if the settings are off
			--return
			--nop, can't ignore because must have a main resource frame
		end

		if (_G.PlaterNameplatesResourceFrame) then
			--ignore if the resource frame is already created
			return
		end

		--create the main frame, this frame is the fundation for the resource bar
		--this frame is anchored to nameplates to show the amount of resources
		local mainResourceFrame = CreateFrame("frame", "PlaterNameplatesResourceFrame", UIParent)

		--> create tables to store the resource bars created
			--store the resources bars by class or spec (hash table with class name or spec e.g. resourceBars[73] = resourceBar)
			mainResourceFrame.resourceBars = {}
			--store all resource bars created (index table)
			mainResourceFrame.allResourceBars = {}
			--store the resource bar by its _G.Enum.PowerType name (hash table where the key is a string from  _G.Enum.PowerType), e.g. resourceBarsByEnum["HolyPower"] = resourceBar
			mainResourceFrame.resourceBarsByEnumName = {}

		--set the OnEvent function
		mainResourceFrame:SetScript("OnEvent", function(self, event, unit, powerType, ...)
			--if (event == "UPDATE_SHAPESHIFT_FORM") then
				--it's guarantee to trigger only on druids

			--else
				--get the current shown resource bar, then get its update func and call it passing the mainResourceFrame as #1 and the resourceBar itself as #2 argument
				local currentResourceBar = self.currentResourceBarShown
				if (currentResourceBar) then
					local updateResourceFunc = currentResourceBar.updateResourceFunc
					if (updateResourceFunc) then
						--check if the power type passes the filter
						if (powerTypesFilter[powerType] or eventsFilter[event]) then
							lastComboPointGainedTime = GetTime()
							Plater.StartLogPerformanceCore("Plater-Resources", "Events", event)
							updateResourceFunc(self, currentResourceBar, false, event, unit, powerType)
							Plater.EndLogPerformanceCore("Plater-Resources", "Events", event)
						end
					end
				end
			--end
		end)

		--get/create the resource frame set in the options panel
		Plater.Resources.UpdateResourceFrameToUse()
	end

	--this function get the value set by the player in the options panel and create a resource bar for what the player selected
	--for instance, players could select to use paladin style combo points on the rogues
	function Plater.Resources.UpdateResourceFrameToUse()
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (not mainResourceFrame) then
			Plater.Resources.CreateMainResourceFrame()
			mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		end

		--grab the player class
		local playerClass = PlayerClass or select(2, UnitClass("player"))
		--the resourceId to query the amount of resources the player has
		Plater.Resources.playerResourceId = Plater.Resources.GetResourceIdForPlayer()

		if (IS_WOW_PROJECT_NOT_MAINLINE) then --classic
			if (playerClass == "ROGUE" or playerClass == "DRUID") then
				local classResourceFunc = resourceBarCreateFuncByEnumName[CONST_ENUMNAME_COMBOPOINT]
				if (classResourceFunc) then
					local resourceBar = classResourceFunc(mainResourceFrame)
					mainResourceFrame.currentResourceBarShown = resourceBar
					Plater.Resources.UpdateResourceBar(nil, resourceBar)
					return resourceBar
				end
			elseif (playerClass == "DEATHKNIGHT") then
				local classResourceFunc = resourceBarCreateFuncByEnumName[CONST_ENUMNAME_RUNES]
				if (classResourceFunc) then
					local resourceBar = classResourceFunc(mainResourceFrame)
					mainResourceFrame.currentResourceBarShown = resourceBar
					Plater.Resources.UpdateResourceBar(nil, resourceBar)
					return resourceBar
				end
			end
		else
			--return if there's no resource for this character
			if (not Plater.Resources.playerResourceId) then
				return
			end

			--get the resource to use on this character, players can change which resource model to use in the options panel
			local resourceEnumName = Plater.Resources.GetResourceEnumNameForPlayer()

			--if no enum name, this class does not use a resource bar
			if (not resourceEnumName) then
				return
			end

			--hide all resource bars already created
			for _, thisResourceBar in pairs(mainResourceFrame.resourceBarsByEnumName) do
				thisResourceBar:Hide()
			end

			--get the resource bar
			local resourceBar = mainResourceFrame.resourceBarsByEnumName[resourceEnumName]
			--if the resource bar isn't yet created, create now
			if (not resourceBar) then
				local createResourceBarFunc = resourceBarCreateFuncByEnumName[resourceEnumName]
				if (createResourceBarFunc) then
					resourceBar = createResourceBarFunc(mainResourceFrame)
				end
			end

			mainResourceFrame.currentResourceBarShown = resourceBar
			Plater.Resources.UpdateResourceBar(nil, resourceBar)

			return resourceBar
		end
	end

	function Plater.Resources.GetMainResourceFrame()
		local mainResourceFrame = _G.PlaterNameplatesResourceFrame
		if (mainResourceFrame) then
			return mainResourceFrame
		else
			Plater.Resources.CreateMainResourceFrame()
			mainResourceFrame = _G.PlaterNameplatesResourceFrame
			return mainResourceFrame
		end
	end

	function Plater.Resources.GetResourceBarInUse()
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (mainResourceFrame) then
			return mainResourceFrame.currentResourceBarShown
		end
	end

	function Plater.Resources.EnableEvents()
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (not mainResourceFrame or mainResourceFrame.eventsEnabled) then
			return
		end

		mainResourceFrame:RegisterUnitEvent("UNIT_POWER_FREQUENT", "player")
		mainResourceFrame:RegisterUnitEvent("UNIT_MAXPOWER", "player")

		if (IS_WOW_PROJECT_MAINLINE and (PlayerClass == "ROGUE" or PlayerClass == "EVOKER")) then
			mainResourceFrame:RegisterUnitEvent("UNIT_POWER_POINT_CHARGE", "player")
		end

		if (PlayerClass == "DRUID") then
			mainResourceFrame:RegisterEvent("UPDATE_SHAPESHIFT_FORM")
		end
		
		if (PlayerClass == "DEATHKNIGHT") then
			mainResourceFrame:RegisterEvent("RUNE_POWER_UPDATE")
			if IS_WOW_PROJECT_NOT_MAINLINE then
				mainResourceFrame:RegisterEvent("RUNE_TYPE_UPDATE")
			end
		end

		mainResourceFrame.eventsEnabled = true
		mainResourceFrame.currentResourceBarShown.updateResourceFunc(mainResourceFrame, mainResourceFrame.currentResourceBarShown, true)
	end

	function Plater.Resources.DisableEvents()
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (not mainResourceFrame or not mainResourceFrame.eventsEnabled) then
			return
		end

		mainResourceFrame:UnregisterEvent("UNIT_POWER_FREQUENT")
		mainResourceFrame:UnregisterEvent("UNIT_MAXPOWER")

		if (IS_WOW_PROJECT_MAINLINE and (PlayerClass == "ROGUE" or PlayerClass == "EVOKER")) then
			mainResourceFrame:UnregisterEvent("UNIT_POWER_POINT_CHARGE")
		end

		if (PlayerClass == "DRUID") then
			mainResourceFrame:UnregisterEvent("UPDATE_SHAPESHIFT_FORM")
		end

		mainResourceFrame.eventsEnabled = false
	end


--> called when use plater resource bar is disabled or when no match on rules to show it; only called from inside this file
	function Plater.Resources.HidePlaterResourceFrame()
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (mainResourceFrame) then
			Plater.Resources.DisableEvents()
			mainResourceFrame:Hide()
			return
		end
	end

--> currently is called from:
	--player spec change (PLAYER_SPECIALIZATION_CHANGED)

	function Plater.Resources.OnSpecChanged()
		-- update DK rune visuals:
		if PlayerClass == "DEATHKNIGHT" then
			local resourceBar =  Plater.Resources.GetResourceBarInUse()
			if not resourceBar then return end
			if IS_WOW_PROJECT_MAINLINE then
				local specIndex = GetSpecialization()
				for i =1, #resourceBar.widgets do
					resourceBar.widgets[i].texture:SetAtlas("DK-"..Plater.Resources.GetRuneKeyBySpec(specIndex).."-Rune-Ready")
					resourceBar.widgets[i].cooldown:SetSwipeTexture("Interface\\PlayerFrame\\DK-"..Plater.Resources.GetRuneKeyBySpec(specIndex).."-Rune-CDFill")
					resourceBar.widgets[i].cooldown:SetEdgeTexture("Interface\\PlayerFrame\\DK-"..Plater.Resources.GetCDEdgeBySpec(specIndex).."-Rune-CDSpark")
				end
			else
				updateWotLKDKRuneTextures(resourceBar)
			end
		end
		
		
		Plater.Resources.CanUsePlaterResourceFrame()
	end

--> check if plater settings allow the use of these resources and check if the class and spec has a resource to show
	--decides if the resource is shown or not
	--TODO: hide/show here?

	function Plater.Resources.CanUsePlaterResourceFrame()
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")

		local retVal = false

		--check first if this class has any resource to be used
		if (not doesClassUseResource(PlayerClass)) then
			Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
			return retVal
		end

		--nameplate which will have the resource bar
		local plateFrame = getPlateFrameForResourceFrame()

		if (not plateFrame) then
			Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
			return retVal
		end

		local playerClass = PlayerClass
		if (IS_WOW_PROJECT_NOT_MAINLINE) then
			if (playerClass == "ROGUE" or playerClass == "DEATHKNIGHT" or (playerClass == "DRUID" and (GetShapeshiftFormID() == 1 or Plater.db.profile.resources_settings.druid_show_always))) then
				Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
				return true
			end
		else
			--spec index from 1 to 4 (see specialization frame pressing N ingame), characters below level 10 might have a bigger index
			local specIndexSelected = GetSpecialization()
			local specId = GetSpecializationInfo(specIndexSelected)
			local mainResourceFrame = Plater.Resources.GetMainResourceFrame()

			if (specId) then
				local doesSpecIdUseResource = doesSpecUseResource(specId)
				--player maybe in guardian spec but is using feral form
				local isInFeralForm = PlayerClass == "DRUID" and (GetShapeshiftFormID() == 1 or Plater.db.profile.resources_settings.druid_show_always)
				if (doesSpecIdUseResource or isInFeralForm or playerClass == "ROGUE") then --TODO: Druid can use it in all specs. stance check needed! (implementing)

					--get the resource bar
					local resourceBar =  Plater.Resources.GetResourceBarInUse()
					if (resourceBar) then
						Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
						return true
					end
				else
					Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
					return retVal
				end
			else
				--if no specialization, player might be low level
				if (UnitLevel("player") < 10) then
					--should get by class?
					if (playerClass == "ROGUE") then
						Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
						return true
					end
				end
			end
		end

		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "CanUsePlaterResourceFrame")
		return retVal
	end

--> currently is called from:
	--player target has changed, this is called from Plater.lua target changed function
	function Plater.Resources.UpdateResourceFramePosition()
		Plater.Resources.UpdateMainResourceFrame(getPlateFrameForResourceFrame())
	end

--this function receives the nameplate where the resource bar will be attached
	function Plater.Resources.UpdateMainResourceFrame(plateFrame)
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateMainResourceFrame")

		--get the main resource frame
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()
		if (not mainResourceFrame) then
			Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateMainResourceFrame")
			return
		end
		
		if (not plateFrame) then
			Plater.Resources.HidePlaterResourceFrame()
			Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateMainResourceFrame")
			return
		end

		if (not Plater.Resources.CanUsePlaterResourceFrame()) then
			Plater.Resources.HidePlaterResourceFrame()

			Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateMainResourceFrame")
			return
		end

		Plater.Resources.EnableEvents()

		if (IS_WOW_PROJECT_NOT_MAINLINE) then
			local resourceBar =  Plater.Resources.GetResourceBarInUse()
			Plater.Resources.UpdateResourceBar(plateFrame, resourceBar)
		else
			local resourceBar =  Plater.Resources.GetResourceBarInUse()
			Plater.Resources.UpdateResourceBar(plateFrame, resourceBar)
		end

		--make its parent be the healthBar from the nameplate where it is anchored to
		local healthBar = plateFrame.unitFrame.healthBar
		mainResourceFrame:SetParent(healthBar)

		--update the resource anchor
		Plater.SetAnchor(mainResourceFrame, DB_PLATER_RESOURCE_BAR_ANCHOR)

		--update the size
		mainResourceFrame:SetWidth(healthBar:GetWidth())
		mainResourceFrame:SetHeight(2)
		mainResourceFrame:SetScale(DB_PLATER_RESOURCE_BAR_SCALE)
		mainResourceFrame:SetFrameStrata(healthBar:GetFrameStrata())
		mainResourceFrame:SetFrameLevel(healthBar:GetFrameLevel() + 25)

		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateMainResourceFrame")
	end


--called from 'UpdateMainResourceFrame'
--this funtion receives the nameplate and the bar to show
	function Plater.Resources.UpdateResourceBar(plateFrame, resourceBar) --note: plateFrame not in use in this function
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateResourceBar")

		--main resource frame
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()

		--hide all resourcebar widgets
		for i = 1, #resourceBar.widgets do
			resourceBar.widgets[i]:Hide()
			resourceBar.widgets[i].numberId:SetShown(DB_PLATER_RESOURCE_SHOW_NUMBER) --numberId is a fontstring above the combo point showing the combo point number
		end

		--check if the bar already shown isn't the bar asking to be shown
		if (mainResourceFrame.currentResourceBarShown) then
			if (mainResourceFrame.currentResourceBarShown ~= resourceBar) then
				mainResourceFrame.currentResourceBarShown:Hide()
			end
		end

		mainResourceFrame.currentResourceBarShown = resourceBar

		--show the resource bar
		resourceBar:Show()
		resourceBar:SetHeight(1)
		mainResourceFrame:Show()

		-- hide blizzard resources
		if DB_USE_PLATER_RESOURCE_BAR then
			local resourceFrame = NamePlateDriverFrame and NamePlateDriverFrame.classNamePlateMechanicFrame
			if (resourceFrame and not resourceFrame:IsForbidden()) then
				resourceFrame:Hide()
			end
			local alternatePowerFrame = NamePlateDriverFrame and NamePlateDriverFrame.classNamePlateAlternatePowerBar
			if (alternatePowerFrame and not alternatePowerFrame:IsForbidden()) then
				alternatePowerFrame:Hide()
			end
		end

		if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
		else
			Plater.Resources.UpdateResourcesFor_HideDepleted(mainResourceFrame, resourceBar)
		end

		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateResourceBar")
	end

--update the resources widgets when hiding the resources background for depleted
--on this type, the location of each resource icon is depending on the amount shown
	function Plater.Resources.UpdateResourcesFor_HideDepleted(mainResourceFrame, resourceBar)
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateResourcesFor_HideDepleted")
		
		--get the table with the widgets created
		local widgetTable = resourceBar.widgets
		--fallback if it is not implemented/created
		if (not widgetTable[1]) then
			return
		end
		
		--store the amount of widgets currently in use - as we are hiding before update: 0
		resourceBar.widgetsInUseAmount = 0
		--set the amount of resources the player has - 0 before update
		resourceBar.lastResourceAmount = 0
		
		for i = 1, CONST_NUM_RESOURCES_WIDGETS do
			local thisResourceWidget = widgetTable[i]
			thisResourceWidget.inUse = false
			thisResourceWidget:Hide()
			resourceBar.widgetsBackground[i]:Hide()
		end
		
		mainResourceFrame.currentResourceBarShown.updateResourceFunc(mainResourceFrame, mainResourceFrame.currentResourceBarShown, true)
		
		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateResourcesFor_HideDepleted")
	end

--update the resources widgets when using the resources showing the background of depleted
--on this type, the location of each resource icon is precomputed
	function Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateResourcesFor_ShowDepleted")

		--get the table with the widgets created
		local widgetTable = resourceBar.widgets
		--fallback if it is not implemented/created
		if (not widgetTable[1]) then
			return
		end

		--warning: calling UnitPowerMax with a nil resource id is returning a default resource amount, example in shadow priest which returns max insanity amount
		local totalWidgetsShown = PlayerClass == "DEATHKNIGHT" and 6 or UnitPowerMax("player", Plater.Resources.playerResourceId)

		--store the amount of widgets currently in use
		resourceBar.widgetsInUseAmount = totalWidgetsShown
		--set the amount of resources the player has
		resourceBar.lastResourceAmount = 0

		--get the default size of each widget
		local widgetWidth = mainResourceFrame.widgetWidth or CONST_WIDGET_WIDTH
		local widgetHeight = mainResourceFrame.widgetHeight or CONST_WIDGET_HEIGHT
		--sum of the width of all resources shown
		local totalWidth = 0

		local isGrowingToLeft = DB_PLATER_RESOURCE_GROW_DIRECTON == "left"
		local firstWidgetIndex = 1
		local firstWindowPoint = isGrowingToLeft and "right" or "left"

		--set the point of the first widget within the resource bar
		local firstWidget = widgetTable[firstWidgetIndex]
		firstWidget:SetPoint(firstWindowPoint, resourceBar, firstWindowPoint, 0, 0)
		local firstWidgetBackground = resourceBar.widgetsBackground[firstWidgetIndex]
		firstWidgetBackground:SetSize(widgetWidth, widgetHeight)
		firstWidgetBackground:Show()
		firstWidgetBackground:ClearAllPoints()
		firstWidgetBackground:SetPoint(firstWindowPoint, resourceBar, firstWindowPoint, 0, 0)

		for i = 1, totalWidgetsShown do
			local thisResourceWidget
			local lastResourceWidget

			if (isGrowingToLeft and false) then
				i = abs(i-(totalWidgetsShown+1))
				thisResourceWidget = widgetTable[i]
				lastResourceWidget = widgetTable[i+1]
			else
				thisResourceWidget = widgetTable[i]
				lastResourceWidget = widgetTable[i-1]
			end

			thisResourceWidget:SetSize(widgetWidth, widgetHeight)

			if (i ~= firstWidgetIndex) then
				--adjust the point of widgets
				thisResourceWidget:ClearAllPoints()
				if (isGrowingToLeft) then
					thisResourceWidget:SetPoint("right", lastResourceWidget, "left", -DB_PLATER_RESOURCE_PADDING, 0)
				else
					thisResourceWidget:SetPoint("left", lastResourceWidget, "right", DB_PLATER_RESOURCE_PADDING, 0)
				end
				thisResourceWidget:Hide() -- ensure 'reset'. will be shown through update later, if needed.

				local widgetBackground = resourceBar.widgetsBackground[i]
				widgetBackground:SetSize(widgetWidth, widgetHeight)
				widgetBackground:Show()

				--add the spacing into the total width occupied
				totalWidth = totalWidth + DB_PLATER_RESOURCE_PADDING
			end

			totalWidth = totalWidth + widgetWidth
		end

		for i = totalWidgetsShown+1, CONST_NUM_RESOURCES_WIDGETS do
			local thisResourceWidget = widgetTable[i]
			thisResourceWidget.inUse = false
			thisResourceWidget:Hide()
			resourceBar.widgetsBackground[i]:Hide()
		end

		resourceBar:SetWidth(totalWidth)
		resourceBar:SetPoint("center", mainResourceFrame, "center", 0, 0)

		--[[
		for i = 1, totalWidgetsShown do
			local thisResourceWidget = widgetTable[i]
			local widgetBackground = resourceBar.widgetsBackground[i]
		   --print(widgetBackground:GetSize())
		   --print(widgetBackground:IsShown())
		   --print(widgetBackground:GetPoint(1))
		   --print(widgetBackground:GetName())
		   --print(widgetBackground:GetTexture())
		end
		]]--

		mainResourceFrame.currentResourceBarShown.updateResourceFunc(mainResourceFrame, mainResourceFrame.currentResourceBarShown, true)

		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateResourcesFor_ShowDepleted")
	end


--realign the combat points after the amount of available combo points change
--this amount isn't the max amount of combo points but the current resources deom UnitPower
	function Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources)
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateResources_NoDepleted")

		--main resource frame
		local mainResourceFrame = Plater.Resources.GetMainResourceFrame()

		--get the table with the widgets created to represent the resource points
		local widgetTable = resourceBar.widgets
		--fallback if it is not implemented/created
		if (not widgetTable[1]) then return end

		--get the default size of each widget
		local widgetWidth = mainResourceFrame.widgetWidth or CONST_WIDGET_WIDTH
		local widgetHeight = mainResourceFrame.widgetHeight or CONST_WIDGET_HEIGHT
		--sum of the width of all resources shown
		local totalWidth = 0
		local now = GetTime()

		for i = 1, currentResources do
			local thisResourceWidget = widgetTable[i]
			local lastResourceWidget = widgetTable[i-1]
			local thisResouceBackground = resourceBar.widgetsBackground[ i ]

			if (not thisResourceWidget.inUse) then
				thisResourceWidget:Show()
				thisResouceBackground:Show()

				thisResourceWidget.inUse = true
				if (lastComboPointGainedTime == now) then
					thisResourceWidget.ShowAnimation:Play()
				end
				thisResourceWidget:SetSize (widgetWidth, widgetHeight)
			end

			thisResourceWidget:ClearAllPoints()
			resourceBar.widgetsBackground[i]:ClearAllPoints()

			if (not lastResourceWidget) then --this is the first widget, anchor it into the left side of the frame
				resourceBar.widgetsBackground[i]:SetPoint("left", resourceBar, "left", 0, 0)
				thisResourceWidget:SetPoint("left", resourceBar, "left", 0, 0)

			else --no the first anchor into the latest widget
				resourceBar.widgetsBackground[i]:SetPoint("left", lastResourceWidget, "right", DB_PLATER_RESOURCE_PADDING, 0)
				thisResourceWidget:SetPoint("left", lastResourceWidget, "right", DB_PLATER_RESOURCE_PADDING, 0)
				totalWidth = totalWidth + DB_PLATER_RESOURCE_PADDING --add the gap into the total width size
			end

			lastResourceWidget = thisResourceWidget
			totalWidth = totalWidth + widgetWidth
		end

		--hide non used widgets
		for i = currentResources+1, CONST_NUM_RESOURCES_WIDGETS do
			local thisResourceWidget = widgetTable[i]
			thisResourceWidget.inUse = false
			thisResourceWidget:Hide()
			resourceBar.widgetsBackground[i]:Hide()
		end

		resourceBar:SetWidth(totalWidth)
		resourceBar:SetPoint(DB_PLATER_RESOURCE_GROW_DIRECTON, mainResourceFrame, DB_PLATER_RESOURCE_GROW_DIRECTON, 0, 0)

		--store current resources
		resourceBar.widgetsInUseAmount = currentResources
		--save the amount of resources
		resourceBar.lastResourceAmount = currentResources

		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateResources_NoDepleted")
	end

	function Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources)
		Plater.StartLogPerformanceCore("Plater-Resources", "Update", "UpdateResources_WithDepleted")

		--fallback if it is not implemented/created
		if (not resourceBar.widgets[1]) then return end

		--calculate how many widgets need to be shown or need to be hide
		if (currentResources < resourceBar.lastResourceAmount) then --hide widgets
			for i = floor(resourceBar.lastResourceAmount), currentResources+1, -1 do
				resourceBar.widgets[i].ShowAnimation:Stop()
				resourceBar.widgets[i]:Hide()
			end

		elseif (currentResources > resourceBar.lastResourceAmount) then --show widgets
			for i = floor(resourceBar.lastResourceAmount) + 1, currentResources do
				resourceBar.widgets[i]:Show()
				if (lastComboPointGainedTime == GetTime()) then
					resourceBar.widgets[i].ShowAnimation:Play()
				end
			end
		end

		--save the amount of resources
		resourceBar.lastResourceAmount = currentResources
		Plater.EndLogPerformanceCore("Plater-Resources", "Update", "UpdateResources_WithDepleted")
	end


-- CLASS SPECIFIC UPDATE FUNCTIONS
	--generic update
	function resourceWidgetsFunctions.OnResourceChanged(mainResourceFrame, resourceBar, forcedRefresh, event, unit, powerType)
		if (event == "UNIT_MAXPOWER" and DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
			forcedRefresh = true
		end

		--ensure to only update for proper power type or if forced
		--powerType showing the Enum name of the power
		if (not forcedRefresh and powerType and powerType ~= classPowerTypes[PlayerClass]) then
			return
		end

		--amount of resources the player has now
		local currentResources = UnitPower("player", Plater.Resources.playerResourceId)

		--resources amount got updated?
		if (currentResources == resourceBar.lastResourceAmount and not forcedRefresh) then
			return
		end

		--which update method to use
		if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources)
		else
			Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources)
		end
	end

	--rogue/druid CP
	function resourceWidgetsFunctions.OnComboPointsChanged(mainResourceFrame, resourceBar, forcedRefresh, event, unit, powerType)
		if (event == "UNIT_MAXPOWER" and DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
			forcedRefresh = true
		end

		if IS_WOW_PROJECT_MAINLINE and (event == "UNIT_POWER_POINT_CHARGE" or forcedRefresh) then
			--fallback if it is not implemented/created
			if (not resourceBar.widgets[1]) then return end
			
			--charges changed
			local chargedPowerPoints = GetUnitChargedPowerPoints("player")
			--chargedPowerPoints = {[1] = random(1,2), [2] = random(3,5)} --testing
			local maxPowerPoints = UnitPowerMax("player", Plater.Resources.playerResourceId)
			for i = 1, maxPowerPoints do
				local widget = resourceBar.widgets[i]
				local isCharged = chargedPowerPoints and tContains(chargedPowerPoints, i)
				if (widget.isCharged ~= isCharged) then
					widget.isCharged = isCharged
					if (isCharged) then
						widget.texture:SetAtlas("uf-roguecp-icon-blue")
						widget.background:SetAtlas("uf-roguecp-bg-anima")
						--widget.texture:SetAtlas("ComboPoints-ComboPoint-Kyrian")
						--widget.background:SetAtlas("ComboPoints-PointBg-Kyrian")
						widget.ShowAnimation:Play()
					else
						widget.texture:SetAtlas("uf-roguecp-icon-red")
						widget.background:SetAtlas("uf-roguecp-bg")
						--widget.texture:SetAtlas("ComboPoints-ComboPoint")
						--widget.background:SetAtlas("ComboPoints-PointBg")
					end
				end
			end
			if not forcedRefresh then
				return
			end
		end

		-- ensure to only update for proper power type or if forced
		if not forcedRefresh and powerType and powerType ~= classPowerTypes[PlayerClass] then
			return
		end

		--amount of resources the player has now
		local currentResources
		if Plater.PlayerHasTargetNonSelf then
			currentResources = GetComboPoints("player", "target")
		else
			currentResources = UnitPower("player", Plater.Resources.playerResourceId)
		end

		--resources amount got updated?
		if (currentResources == resourceBar.lastResourceAmount and not forcedRefresh) then
			return
		end

		--which update method to use
		if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources)
		else
			Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources)
		end
	end
	
	--DK runes update
	local function RuneComparison(runeAIndex, runeBIndex)
		local runeAStart, runeADuration, runeARuneReady = GetRuneCooldown(runeAIndex)
		local runeBStart, runeBDuration, runeBRuneReady = GetRuneCooldown(runeBIndex)

		if (runeARuneReady ~= runeBRuneReady) then
			return runeARuneReady;
		end

		if (runeAStart ~= runeBStart) then
			return runeAStart < runeBStart
		end

		return runeAIndex < runeBIndex
	end
	function resourceWidgetsFunctions.OnRunesChanged(mainResourceFrame, resourceBar, forcedRefresh, event)
		resourceBar.runesOnCooldown = resourceBar.runesOnCooldown or {}
		
		table.sort(resourceBar.runeIndexes, RuneComparison);
		
		for index, runeIndex in ipairs(resourceBar.runeIndexes) do
			local runeButton = resourceBar.widgets[index]
			runeButton:Show()
			local cooldown = runeButton.cooldown

			local start, duration, runeReady = GetRuneCooldown(runeIndex)

			if not runeReady then
				resourceBar.runesOnCooldown[index] = runeIndex
				if start and start > 0 then
					cooldown:SetAlpha(1)
					cooldown:SetCooldown(start, duration)
				end
				if not DB_PLATER_RESOURCE_SHOW_DEPLETED then
					cooldown:SetAlpha(0)
				end
				runeButton.ShowAnimation:Stop()
				--runeButton.texture:SetAlpha(0)
				runeButton.texture:Hide()
			else
				--runeButton.texture:SetAtlas("DK-"..Plater.Resources.GetRuneKeyBySpec(specIndex).."-Rune-Ready")
				if (resourceBar.runesOnCooldown[index]) then
					local _, _, runeReadyNow = GetRuneCooldown(resourceBar.runesOnCooldown[index])
					if (runeReadyNow) then
						resourceBar.runesOnCooldown[index] = nil
						
						runeButton.ShowAnimation:Play()
						--runeButton.texture:SetAlpha(1)
						runeButton.texture:Show()
					else
						--runeButton.texture:SetAlpha(0)
						runeButton.texture:Hide()
					end
				else
					--runeButton.texture:SetAlpha(1)
					runeButton.texture:Show()
				end

				cooldown:SetAlpha(0)
				cooldown:Hide()
			end
		end
	end
	function resourceWidgetsFunctions.OnRunesChangedWotLK(mainResourceFrame, resourceBar, forcedRefresh, event)
		resourceBar.runesOnCooldown = resourceBar.runesOnCooldown or {}
		
		if (event and event == "RUNE_TYPE_UPDATE") then
			updateWotLKDKRuneTextures(resourceBar)
			return
		end
		
		for index = 1, 6 do
			local runeButton = resourceBar.widgets[index]
			--runeButton.background:Hide()
			runeButton:Show()
			local cooldown = runeButton.cooldown

			local start, duration, runeReady = GetRuneCooldown(index)

			if not runeReady then
				resourceBar.runesOnCooldown[index] = true
				if start then
					cooldown:SetAlpha(1)
					CooldownFrame_Set(cooldown, start, duration, 1, true);
				end
				if not DB_PLATER_RESOURCE_SHOW_DEPLETED then
					cooldown:SetAlpha(0)
				end
				runeButton.ShowAnimation:Stop()
				runeButton.texture:SetAlpha(0)
			else
				if (resourceBar.runesOnCooldown[index]) then
					local _, _, runeReadyNow = GetRuneCooldown(index)
					if (runeReadyNow) then
						resourceBar.runesOnCooldown[index] = nil
						
						runeButton.ShowAnimation:Play()
						runeButton.texture:SetAlpha(1)
					end
				else
					runeButton.texture:SetAlpha(1)
				end

				cooldown:SetAlpha(0)
				cooldown:Hide()
			end
		end
	end
	
	--WL soul chards
	local widthByFillAmount = {
		[0] = 0,
		[1] = 6,
		[2] = 12,
		[3] = 14,
		[4] = 18,
		[5] = 22,
		[6] = 22,
		[7] = 24,
		[8] = 20,
		[9] = 18,
		[10] = 0,
	};
	function resourceWidgetsFunctions.OnSoulChardsChanged(mainResourceFrame, resourceBar, forcedRefresh, event, unit, powerType)
		
		if (event == "UNIT_MAXPOWER" and DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
			forcedRefresh = true
		end
		
		-- ensure to only update for proper power type or if forced
		if not forcedRefresh and powerType and powerType ~= classPowerTypes[PlayerClass] then
			return
		end
		
		--amount of resources the player has now
		local shardPower = UnitPower("player", Plater.Resources.playerResourceId, true)
		local shardModifier = UnitPowerDisplayMod(Enum.PowerType.SoulShards)
		local currentResources = (shardModifier ~= 0) and (shardPower / shardModifier) or 0
		
		-- how to handle partial?
		local actualResources = currentResources
		local isDestro = GetSpecialization() == SPEC_WARLOCK_DESTRUCTION
		if isDestro then
			currentResources = math.floor(currentResources) + 1 -- ensure partial is shown
		else
			currentResources = math.floor(currentResources)
		end

		--resources amount got updated?
		if (currentResources == resourceBar.lastResourceAmount and not forcedRefresh) then
			return
		end

		--which update method to use
		if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources)
		else
			Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources)
		end
		
		resourceBar.lastResourceAmount = actualResources
		
		for i = 1, resourceBar.widgetsInUseAmount do
			local widget = resourceBar.widgets[i]
			local fillAmount = Saturate(actualResources - i + 1)
			local active = fillAmount >= 1
			if active then
				widget.texture:Show()
				widget.fillBar:SetValue(0)
			else
				widget.texture:Hide()
				widget.fillBar:SetValue(fillAmount)
			end
			widget.glowtexture:SetShown(fillAmount > 0 and fillAmount < 1)
			if (widget.glowtexture:IsShown()) then
				local sparkWidthIndex = math.floor(fillAmount * 10)
				local fullOffset = widthByFillAmount[sparkWidthIndex]
				widget.glowtexture:SetPoint("TOPLEFT", widget.fillBar:GetStatusBarTexture(), "TOP", -(fullOffset/2), 2)
				widget.glowtexture:SetPoint("BOTTOMRIGHT", widget.fillBar:GetStatusBarTexture(), "TOP", fullOffset/2, -2)
			end
		end
	end
	
	--Evoker Essence
	local FillingAnimationTime = 5.0; 
	local evokerEssenceOnUpdate = function(self, elapsed)
	   	local pace,interrupted = GetPowerRegenForPowerType(Plater.Resources.playerResourceId)
		if (pace == nil or pace == 0) then
			pace = 0.2
		end
		local cooldownDuration = 1 / pace
		local animationSpeedMultiplier = FillingAnimationTime / cooldownDuration
		self.EssenceFilling.FillingAnim:SetAnimationSpeedMultiplier(animationSpeedMultiplier)
		self.EssenceFilling.CircleAnim:SetAnimationSpeedMultiplier(animationSpeedMultiplier)
	end
	function resourceWidgetsFunctions.OnEssenceChanged(mainResourceFrame, resourceBar, forcedRefresh, event, unit, powerType)
		if (event == "UNIT_MAXPOWER" and DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResourcesFor_ShowDepleted(mainResourceFrame, resourceBar)
			forcedRefresh = true
		end

		-- ensure to only update for proper power type or if forced
		if not forcedRefresh and powerType and powerType ~= classPowerTypes[PlayerClass] then
			return
		end

		--amount of resources the player has now
		local currentResources = UnitPower("player", Plater.Resources.playerResourceId)
		local maxResources = UnitPowerMax("player", Plater.Resources.playerResourceId)
		local isAtMaxPoints = currentResources == maxResources
		local pace, interrupted = GetPowerRegenForPowerType(Plater.Resources.playerResourceId)
		if (pace == nil or pace == 0) then
			pace = 0.2
		end
		
		--resources amount got updated?
		if (currentResources == resourceBar.lastResourceAmount and not forcedRefresh) then
			--return --this somehow fucks up because UnitPartialPower returns weird shit.
		end
		
		--which update method to use
		if (DB_PLATER_RESOURCE_SHOW_DEPLETED) then
			Plater.Resources.UpdateResources_WithDepleted(resourceBar, currentResources + (isAtMaxPoints and 0 or 1))
		else
			Plater.Resources.UpdateResources_NoDepleted(resourceBar, currentResources + (isAtMaxPoints and 0 or 1))
		end
		
		resourceBar.lastResourceAmount = currentResources
		
		for i = 1, min(currentResources, resourceBar.widgetsInUseAmount) do
			local widget = resourceBar.widgets[i]
			
			--widget.EssenceFull:Show()
			widget.EssenceFull:Hide()
			
			if not widget.EssenceFillDone:IsShown() then
				widget.EssenceFillDone:Show()
				widget.EssenceFillDone.AnimInOrig:Play()
			end
			
			widget.EssenceFilling.FillingAnim:Stop()
			widget.EssenceFilling.CircleAnim:Stop()
			widget.EssenceFilling:Hide()

			--widget.EssenceFillDone:Show()
			
			widget.EssenceEmpty:Hide()
			widget:SetScript("OnUpdate", nil)
			widget:Show()
		end
		for i = currentResources + 2, resourceBar.widgetsInUseAmount do
			local widget = resourceBar.widgets[i]
		   	if (widget.EssenceFull:IsShown() or widget.EssenceFilling:IsShown() or widget.EssenceFillDone:IsShown()) then
				widget.EssenceDepleting:Show()
				if (not widget.EssenceDepleting.AnimIn:IsPlaying()) then
					widget.EssenceDepleting.AnimIn:Play()
				end
				widget.EssenceFilling.FillingAnim:Stop()
				widget.EssenceFilling.CircleAnim:Stop()
				widget.EssenceFilling:Hide()
				widget.EssenceEmpty:Hide()
				widget.EssenceFillDone.AnimIn:Stop()
				widget.EssenceFillDone:Hide()
				widget.EssenceFull:Hide()
			end
			widget:SetScript("OnUpdate", nil)
			widget:Show()
		end

		local cooldownDuration = 1 / pace
		local animationSpeedMultiplier = FillingAnimationTime / cooldownDuration
		local widget = resourceBar.widgets[currentResources + 1]
		if (not isAtMaxPoints and widget )then --this just fucks up: and not (widget.EssenceFilling.FillingAnim:IsPlaying() or widget.EssenceFull:IsShown())) then
			widget.EssenceDepleting.AnimIn:Stop()
			widget.EssenceFillDone.AnimIn:Stop()

			widget.EssenceFilling:Show()
			widget.EssenceDepleting:Hide()
			widget.EssenceEmpty:Hide()
			widget.EssenceFillDone:Hide()
			widget.EssenceFull:Hide()
			
			local partial = UnitPartialPower("player", Plater.Resources.playerResourceId) / 1000.0
			if partial == 0 then
			   partial = 0.001
			end
			
			widget.EssenceFilling.FillingAnim:SetAnimationSpeedMultiplier(animationSpeedMultiplier)
			widget.EssenceFilling.CircleAnim:SetAnimationSpeedMultiplier(animationSpeedMultiplier)
			widget.EssenceFilling.FillingAnim:Restart(false, partial *  widget.EssenceFilling.FillingAnim:GetDuration())
			widget.EssenceFilling.CircleAnim:Restart(false, partial * widget.EssenceFilling.CircleAnim:GetDuration())
			widget:SetScript("OnUpdate", evokerEssenceOnUpdate)
		end
	end