local E, L, V, P, G = unpack(ElvUI); --Import: Engine, Locales, PrivateDB, ProfileDB, GlobalDB
local B = E:GetModule("Bags");

--Cache global variables
--Lua functions
local _G = _G
local unpack = unpack
local tinsert = table.insert
--WoW API / Variables
local CreateFrame = CreateFrame
local NUM_BAG_FRAMES = NUM_BAG_FRAMES

local TOTAL_BAGS = NUM_BAG_FRAMES + 2

local ElvUIKeyRing = CreateFrame("CheckButton", "ElvUIKeyRingButton", UIParent, "ItemButtonTemplate")
ElvUIKeyRing:RegisterForClicks("anyUp")
E:StripTextures(ElvUIKeyRing)
ElvUIKeyRing:SetScript("OnClick", function() if CursorHasItem() then PutKeyInKeyRing() else ToggleKeyRing() end end)
ElvUIKeyRing:SetScript("OnReceiveDrag", function() if CursorHasItem() then PutKeyInKeyRing() end end)
ElvUIKeyRing:SetScript("OnEnter", function() GameTooltip:SetOwner(this, "ANCHOR_LEFT") local color = HIGHLIGHT_FONT_COLOR GameTooltip:SetText(KEYRING, color.r, color.g, color.b) GameTooltip:AddLine() end)
ElvUIKeyRing:SetScript("OnLeave", function() GameTooltip:Hide() end)
_G[ElvUIKeyRing:GetName().."IconTexture"]:SetTexture("Interface\\ContainerFrame\\KeyRing-Bag-Icon")
_G[ElvUIKeyRing:GetName().."IconTexture"]:SetTexCoord(unpack(E.TexCoords))

local function OnEnter()
	if not E.db.bags.bagBar.mouseover then return end
	UIFrameFadeIn(ElvUIBags, 0.2, ElvUIBags:GetAlpha(), 1)
end

local function OnLeave()
	if not E.db.bags.bagBar.mouseover then return end
	UIFrameFadeOut(ElvUIBags, 0.2, ElvUIBags:GetAlpha(), 0)
end

function B:SkinBag(bag)
	local icon = _G[bag:GetName().."IconTexture"]
	bag.oldTex = icon:GetTexture()

	E:StripTextures(bag)
	E:CreateBackdrop(bag, "Default", true)
	bag.backdrop:SetAllPoints()
	E:StyleButton(bag, true)
	icon:SetTexture(bag.oldTex)
	icon:Show()
	E:SetInside(icon)
	icon:SetTexCoord(unpack(E.TexCoords))
end

function B:SizeAndPositionBagBar()
	if not ElvUIBags then return end

	local buttonSpacing = E.db.bags.bagBar.spacing
	local backdropSpacing = E.db.bags.bagBar.backdropSpacing
	local bagBarSize = E.db.bags.bagBar.size
	local showBackdrop = E.db.bags.bagBar.showBackdrop
	local growthDirection = E.db.bags.bagBar.growthDirection
	local sortDirection = E.db.bags.bagBar.sortDirection

	if E.db.bags.bagBar.mouseover then
		ElvUIBags:SetAlpha(0)
	else
		ElvUIBags:SetAlpha(1)
	end

	if showBackdrop then
		ElvUIBags.backdrop:Show()
	else
		ElvUIBags.backdrop:Hide()
	end

	E:Size(ElvUIKeyRingButton, bagBarSize)
	ElvUIKeyRingButton:ClearAllPoints()

	for i = 1, getn(ElvUIBags.buttons) do
		local button = ElvUIBags.buttons[i]
		local prevButton = ElvUIBags.buttons[i-1]
		E:Size(button, E.db.bags.bagBar.size)
		button:ClearAllPoints()

		if growthDirection == "HORIZONTAL" and sortDirection == "ASCENDING" then
			if i == 1 then
				E:Point(button, "LEFT", ElvUIBags, "LEFT", (showBackdrop and (backdropSpacing + E.Border) or 0), 0)
			elseif prevButton then
				E:Point(button, "LEFT", prevButton, "RIGHT", buttonSpacing, 0)
			end
		elseif growthDirection == "VERTICAL" and sortDirection == "ASCENDING" then
			if i == 1 then
				E:Point(button, "TOP", ElvUIBags, "TOP", 0, -(showBackdrop and (backdropSpacing + E.Border) or 0))
			elseif prevButton then
				E:Point(button, "TOP", prevButton, "BOTTOM", 0, -buttonSpacing)
			end
		elseif growthDirection == "HORIZONTAL" and sortDirection == "DESCENDING" then
			if i == 1 then
				E:Point(button, "RIGHT", ElvUIBags, "RIGHT", -(showBackdrop and (backdropSpacing + E.Border) or 0), 0)
			elseif prevButton then
				E:Point(button, "RIGHT", prevButton, "LEFT", -buttonSpacing, 0)
			end
		else
			if i == 1 then
				E:Point(button, "BOTTOM", ElvUIBags, "BOTTOM", 0, (showBackdrop and (backdropSpacing + E.Border) or 0))
			elseif prevButton then
				E:Point(button, "BOTTOM", prevButton, "TOP", 0, buttonSpacing)
			end
		end
	end

	if growthDirection == "HORIZONTAL" then
		E:Size(ElvUIBags, bagBarSize*(TOTAL_BAGS) + buttonSpacing*(TOTAL_BAGS-1) + ((showBackdrop == true and (E.Border + backdropSpacing) or E.Spacing)*2), bagBarSize + ((showBackdrop and (E.Border + backdropSpacing) or E.Spacing)*2))
	else
		E:Size(ElvUIBags, bagBarSize + ((showBackdrop and (E.Border + backdropSpacing) or E.Spacing)*2), bagBarSize*(TOTAL_BAGS) + buttonSpacing*(TOTAL_BAGS-1) + ((showBackdrop == true and (E.Border + backdropSpacing) or E.Spacing)*2))
	end
end

function B:LoadBagBar()
	if not E.private.bags.bagBar then return end

	local ElvUIBags = CreateFrame("Frame", "ElvUIBags", E.UIParent)
	E:Point(ElvUIBags, "TOPRIGHT", RightChatPanel, "TOPLEFT", -4, 0)
	ElvUIBags.buttons = {}
	E:CreateBackdrop(ElvUIBags)
	ElvUIBags.backdrop:SetAllPoints()
	ElvUIBags:EnableMouse(true)
	ElvUIBags:SetScript("OnEnter", OnEnter)
	ElvUIBags:SetScript("OnLeave", OnLeave)

	MainMenuBarBackpackButton:SetParent(ElvUIBags)
	MainMenuBarBackpackButton.SetParent = E.dummy
	MainMenuBarBackpackButton:ClearAllPoints()
	E:FontTemplate(MainMenuBarBackpackButtonCount, nil, 10)
	MainMenuBarBackpackButtonCount:ClearAllPoints()
	E:Point(MainMenuBarBackpackButtonCount, "BOTTOMRIGHT", MainMenuBarBackpackButton, "BOTTOMRIGHT", -1, 4)
	MainMenuBarBackpackButton:Show()
	MainMenuBarBackpackButton:SetAlpha(1)
	HookScript(MainMenuBarBackpackButton, "OnEnter", OnEnter)
	HookScript(MainMenuBarBackpackButton, "OnLeave", OnLeave)
	tinsert(ElvUIBags.buttons, MainMenuBarBackpackButton)
	self:SkinBag(MainMenuBarBackpackButton)

	for i = 0, NUM_BAG_FRAMES - 1 do
		local b = _G["CharacterBag"..i.."Slot"]
		b:SetParent(ElvUIBags)
		b.SetParent = E.dummy
		b:Show()
		b:SetAlpha(1)

		HookScript(b, "OnEnter", OnEnter)
		HookScript(b, "OnLeave", OnLeave)

		self:SkinBag(b)
		tinsert(ElvUIBags.buttons, b)
	end

	E:SetTemplate(ElvUIKeyRingButton)
	E:StyleButton(ElvUIKeyRingButton, true)
	E:SetInside(_G[ElvUIKeyRingButton:GetName().."IconTexture"])
	ElvUIKeyRingButton:SetParent(ElvUIBags)
	ElvUIKeyRingButton.SetParent = E.dummy
	HookScript(ElvUIKeyRingButton, "OnEnter", OnEnter)
	HookScript(ElvUIKeyRingButton, "OnLeave", OnLeave)
	tinsert(ElvUIBags.buttons, ElvUIKeyRingButton)

	self:SizeAndPositionBagBar()
	E:CreateMover(ElvUIBags, "BagsMover", L["Bags"])
end
