local SLE, T, E, L, V, P, G = unpack(select(2, ...))
local BG = SLE:NewModule('Backgrounds', 'AceHook-3.0');
local CreateFrame = CreateFrame

--Default positions table. ID is passed everywhere so when positioning stuff I can just unpack by id and not writing a line for every BG.
BG.pos = {
		[1] = {"BOTTOM", "BOTTOM", 0, 21},
		[2] = {"BOTTOMRIGHT", "BOTTOM", -((E.eyefinity or E.screenwidth)/4 + 32)/2 - 1, 21, 21},
		[3] = {"BOTTOMLEFT", "BOTTOM", ((E.eyefinity or E.screenwidth)/4 + 32)/2 + 1, 21},
		[4] = {"BOTTOM", "BOTTOM", 0, E.screenheight/6 + 9},
	}

function BG:CreateFrame(id)
	local frame = CreateFrame("Frame", "SLE_BG_"..id, E.UIParent)
	frame:SetFrameStrata("BACKGROUND")
	frame.texture = frame:CreateTexture(nil, 'OVERLAY')
	frame.texture:Point('TOPLEFT', frame, 'TOPLEFT', 2, -2)
	frame.texture:Point('BOTTOMRIGHT', frame, 'BOTTOMRIGHT', -2, 2)
	frame:Hide()

	frame.texture:SetAlpha(E.db.general.backdropfadecolor.a or 0.5) 
	return frame
end

function BG:Positions(id)
	local anchor, point, x, y = T.unpack(BG.pos[id])
	BG["Frame_"..id]:SetPoint(anchor, E.UIParent, point, x, y)
end

function BG:UpdateTexture(id)
	BG["Frame_"..id].texture:SetTexture(BG.db["bg"..id].texture)
end

function BG:FramesSize(id)
	BG["Frame_"..id]:SetSize(BG.db["bg"..id].width, BG.db["bg"..id].height)
end

function BG:Alpha(id)
	BG["Frame_"..id]:SetAlpha(BG.db["bg"..id].alpha)
end

function BG:FrameTemplate(id)
	BG["Frame_"..id]:SetTemplate(BG.db["bg"..id].template, true)
end

function BG:RegisterHide(id)
	if BG.db["bg"..id].pethide then
		E:RegisterPetBattleHideFrames(BG["Frame_"..id], E.UIParent, "BACKGROUND")
	else
		E:UnregisterPetBattleHideFrames(BG["Frame_"..id])
	end
end

function BG:FramesVisibility(id)
	if BG.db["bg"..id].enabled then
		BG["Frame_"..id]:Show()
		E:EnableMover(BG["Frame_"..id].mover:GetName())
		RegisterStateDriver(BG["Frame_"..id], "visibility", BG.db["bg"..id].visibility)
	else
		BG["Frame_"..id]:Hide()
		E:DisableMover(BG["Frame_"..id].mover:GetName())
		UnregisterStateDriver(BG["Frame_"..id], "visibility")
	end
end

function BG:MouseCatching(id)
	BG["Frame_"..id]:EnableMouse(not(BG.db["bg"..id].clickthrough))
end

function BG:CreateAndUpdateFrames()
	for id = 1, 4 do
		if not BG["Frame_"..id] then BG["Frame_"..id] = self:CreateFrame(id) BG:Positions(id) end
		BG:FramesSize(id)
		BG:FrameTemplate(id)
		BG:Alpha(id)
		if not E.CreatedMovers["SLE_BG_"..id.."_Mover"] then E:CreateMover(BG["Frame_"..id], "SLE_BG_"..id.."_Mover", L["SLE_BG_"..id], nil, nil, nil, "S&L,S&L BG") end
		BG:FramesVisibility(id)
		BG:MouseCatching(id)
		BG:UpdateTexture(id)
		BG:RegisterHide(id)
	end
end

function BG:Initialize()
	if not SLE.initialized then return end

	function BG:ForUpdateAll()
		BG.db = E.db.sle.backgrounds
		BG:CreateAndUpdateFrames()
	end

	BG:ForUpdateAll()
end

SLE:RegisterModule(BG:GetName())
