local L = LibStub("AceLocale-3.0"):GetLocale("Bartender4")
-- register module
local BagBarMod = Bartender4:NewModule("BagBar", "AceHook-3.0")

-- fetch upvalues
local ButtonBar = Bartender4.ButtonBar.prototype
local LBF = LibStub("LibButtonFacade", true)

-- create prototype information
local BagBar = setmetatable({}, {__index = ButtonBar})

local table_insert = table.insert

local defaults = { profile = Bartender4:Merge({
	enabled = true,
	keyring = false,
	onebag = false,
	visibility = {
		possess = false,
	},
}, Bartender4.ButtonBar.defaults) }

function BagBarMod:OnInitialize()
	self.db = Bartender4.db:RegisterNamespace("BagBar", defaults)
	self:SetEnabledState(self.db.profile.enabled)
end

local noopFunc = function() end

function BagBarMod:OnEnable()
	if not self.bar then
		self.bar = setmetatable(Bartender4.ButtonBar:Create("BagBar", self.db.profile, L["Bag Bar"]), {__index = BagBar})
		
		-- TODO: real start position
		self.bar:SetPoint("CENTER")
	end
	self.bar:Enable()
	self:ToggleOptions()
	self.bar:ApplyConfig(self.db.profile)
end

function BagBarMod:ApplyConfig()
	self.bar:ApplyConfig(self.db.profile)
end

function BagBar:ApplyConfig(config)
	ButtonBar.ApplyConfig(self, config)
	self:FeedButtons()
	self:UpdateButtonLayout()
end

function clearSetPoint(btn, ...)
	btn:ClearAllPoints()
	btn:SetPoint(...)
end

BagBar.button_width = 30
BagBar.button_height = 30
BagBarMod.button_count = 5
function BagBar:FeedButtons()
	local count = 1
	if self.buttons then
		while next(self.buttons) do
			local btn = table.remove(self.buttons)
			btn:Hide()
			btn:SetParent(UIParent)
			btn:ClearSetPoint("CENTER")
			if btn ~= KeyRingButton and btn.LBFButtonData then
				local group = self.LBFGroup
				group:RemoveButton(btn)
			end
		end
	else
		self.buttons = {}
	end
	
	if self.config.keyring then
		table_insert(self.buttons, KeyRingButton)
		count = count + 1
	end
	
	if not self.config.onebag then
		table_insert(self.buttons, CharacterBag3Slot)
		table_insert(self.buttons, CharacterBag2Slot)
		table_insert(self.buttons, CharacterBag1Slot)
		table_insert(self.buttons, CharacterBag0Slot)
		count = count + 4
	end
	
	table_insert(self.buttons, MainMenuBarBackpackButton)
	
	for i,v in pairs(self.buttons) do
		v:SetParent(self)
		v:Show()
		if v ~= KeyRingButton then
			v:SetNormalTexture("")
			
			if LBF then
				local group = self.LBFGroup
				if not v.LBFButtonData then
					v.LBFButtonData = {
						Button = v,
						Icon = _G[v:GetName() .. "IconTexture"],
					}
				end
				group:AddButton(v, v.LBFButtonData)
			end
		end
		
		v.ClearSetPoint = clearSetPoint
	end
	
	BagBarMod.button_count = count
	if BagBarMod.optionobject then
		BagBarMod.optionobject.table.general.args.rows.max = count
	end
end
