local E, L, V, P, G = unpack(select(2, ...))
local UF = E:GetModule("UnitFrames")
local _, ns = ...
local ElvUF = ns.oUF
assert(ElvUF, "ElvUI was unable to locate oUF.")

local max = math.max

local CreateFrame = CreateFrame
local InCombatLockdown = InCombatLockdown
local RegisterStateDriver = RegisterStateDriver

function UF:Construct_TankFrames()
	self:SetScript("OnEnter", UnitFrame_OnEnter)
	self:SetScript("OnLeave", UnitFrame_OnLeave)

	self.RaisedElementParent = CreateFrame("Frame", nil, self)
	self.RaisedElementParent.TextureParent = CreateFrame("Frame", nil, self.RaisedElementParent)
	self.RaisedElementParent:SetFrameLevel(self:GetFrameLevel() + 100)

	self.Health = UF:Construct_HealthBar(self, true)
	self.Name = UF:Construct_NameText(self)
	self.ThreatIndicator = UF:Construct_Threat(self)
	self.RaidTargetIndicator = UF:Construct_RaidIcon(self)
	self.MouseGlow = UF:Construct_MouseGlow(self)
	self.TargetGlow = UF:Construct_TargetGlow(self)
	self.FocusGlow = UF:Construct_FocusGlow(self)
	self.Fader = UF:Construct_Fader()
	self.Cutaway = UF:Construct_Cutaway(self)

	if not self.isChild then
		self.Buffs = UF:Construct_Buffs(self)
		self.Debuffs = UF:Construct_Debuffs(self)
		self.AuraWatch = UF:Construct_AuraWatch(self)
		self.RaidDebuffs = UF:Construct_RaidDebuffs(self)
		self.AuraHighlight = UF:Construct_AuraHighlight(self)

		self.unitframeType = "tank"
	else
		self.unitframeType = "tanktarget"
	end

	UF:Update_TankFrames(self, E.db.unitframe.units.tank)
	UF:Update_StatusBars()
	UF:Update_FontStrings()

	self.originalParent = self:GetParent()

	return self
end

function UF:Update_TankHeader(header, db)
	header:Hide()
	header.db = db

	UF:ClearChildPoints(header:GetChildren())

	if not header.isForced and db.enable then
		RegisterStateDriver(header, "visibility", "[@raid1,exists] show;hide")
	end

	header:SetAttribute("point", "BOTTOM")
	header:SetAttribute("columnAnchorPoint", "LEFT")
	header:SetAttribute("yOffset", db.verticalSpacing)

	if not header.positioned then
		header:ClearAllPoints()
		header:Point("TOPLEFT", E.UIParent, "TOPLEFT", 4, -186)

		local width, height = header:GetSize()
		header.dirtyWidth, header.dirtyHeight = width, max(height, 2 * db.height + db.verticalSpacing)
		header:SetAttribute("minHeight", header.dirtyHeight)
		header:SetAttribute("minWidth", header.dirtyWidth)

		E:CreateMover(header, header:GetName().."Mover", L["MT Frames"], nil, nil, nil, "ALL,RAID", nil, "unitframe,groupUnits,tank,generalGroup")
		header.positioned = true
	end
end

function UF:Update_TankFrames(frame, db)
	frame.db = db
	frame.colors = ElvUF.colors
	frame:RegisterForClicks(UF.db.targetOnMouseDown and "AnyDown" or "AnyUp")

	do
		frame.ORIENTATION = db.orientation
		frame.SHADOW_SPACING = 3
		frame.UNIT_WIDTH = db.width
		frame.UNIT_HEIGHT = db.height
		frame.USE_POWERBAR = false
		frame.POWERBAR_DETACHED = false
		frame.USE_INSET_POWERBAR = false
		frame.USE_MINI_POWERBAR = false
		frame.USE_POWERBAR_OFFSET = false
		frame.POWERBAR_OFFSET = 0
		frame.POWERBAR_HEIGHT = 0
		frame.POWERBAR_WIDTH = 0
		frame.USE_PORTRAIT = false
		frame.USE_PORTRAIT_OVERLAY = false
		frame.PORTRAIT_WIDTH = 0
		frame.CLASSBAR_WIDTH = 0
		frame.CLASSBAR_YOFFSET = 0
		frame.BOTTOM_OFFSET = 0

		frame.VARIABLES_SET = true
	end

	if frame.isChild then
		local childDB = db.targetsGroup
		frame.db = db.targetsGroup
		frame:Size(childDB.width, childDB.height)

		if not InCombatLockdown() then
			if childDB.enable then
				frame:Enable()
				frame:ClearAllPoints()
				frame:Point(E.InversePoints[childDB.anchorPoint], frame.originalParent, childDB.anchorPoint, childDB.xOffset, childDB.yOffset)
			else
				frame:Disable()
			end
		end
	else
		frame:Size(frame.UNIT_WIDTH, frame.UNIT_HEIGHT)
	end

	UF:Configure_HealthBar(frame)
	UF:UpdateNameSettings(frame)
	UF:Configure_Threat(frame)
	UF:Configure_Fader(frame)
	UF:Configure_Cutaway(frame)
	UF:Configure_RaidIcon(frame)

	if not frame.isChild then
		if not IsAddOnLoaded("Clique") then
			if db.middleClickFocus then
				frame:SetAttribute("type3", "focus")
			elseif frame:GetAttribute("type3") == "focus" then
				frame:SetAttribute("type3", nil)
			end
		end

		UF:EnableDisable_Auras(frame)
		UF:Configure_AllAuras(frame)
		UF:Configure_RaidDebuffs(frame)
		UF:Configure_AuraHighlight(frame)
		UF:UpdateAuraWatch(frame)
	end

	frame:UpdateAllElements("ElvUI_UpdateAllElements")
end

UF.headerstoload.tank = {"MAINTANK", "ELVUI_UNITTARGET"}