local hud_enable = talents_mcm.get_config("hud_enable")
local hud_pos_x = talents_mcm.get_config("hud_x")
local hud_pos_y = talents_mcm.get_config("hud_y")

HUD = nil

function activate_hud()
	if HUD == nil and hud_enable then
		HUD = talents_hud()
		get_hud():AddDialogToRender(HUD)
	end
end

function deactivate_hud()
	if HUD ~= nil then
		get_hud():RemoveDialogToRender(HUD)
		HUD = nil
	end
end

class "talents_hud" (CUIScriptWnd)
function talents_hud:__init() super()
	self:InitControls()
end

function talents_hud:InitControls()
	self:SetWndRect(Frect():set(0,0,1024,768))
	self:SetAutoDelete(true)

	self.xml = CScriptXmlInit()
	local xml = self.xml
	xml:ParseFile("ui_xcvb_talents_hud_16.xml")


	-- main container
	self.main = xml:InitStatic("main", self)
	local main_width = self.main:GetWidth()

	self.conts = {}
	self.active = {}

	self.icon_width = 0
	self.max_cols = 8

	local gap_x = 10

	for i = 1, self.max_cols do

		-- buff container
		self.conts[i] = {}
		self.conts[i].cont = xml:InitStatic("main:icon_cont", self.main)
		local cont_pos = self.conts[i].cont:GetWndPos()
		local cont_width = self.conts[i].cont:GetWidth()
		local new_cont_x = main_width - (cont_width * i) - (gap_x * i)
		self.conts[i].cont:SetWndPos(vector2():set(new_cont_x, cont_pos.y))

		-- store width and y
		if self.icon_width == 0 then
			self.icon_width = cont_width
		end

		-- icon
		self.conts[i].icon = xml:InitStatic("main:icon_cont:icon", self.conts[i].cont)

		-- stacks shadow
		self.conts[i].stacks_shadow = xml:InitTextWnd("main:icon_cont:stacks_shadow", self.conts[i].cont)

		-- stacks
		self.conts[i].stacks = xml:InitTextWnd("main:icon_cont:stacks", self.conts[i].cont)

		-- timer shadow
		self.conts[i].tmr_shadow = xml:InitTextWnd("main:icon_cont:tmr_shadow", self.conts[i].cont)

		-- timer
		self.conts[i].tmr = xml:InitTextWnd("main:icon_cont:tmr", self.conts[i].cont)
	end

end


local tmr = 0
function talents_hud:Update()
	CUIScriptWnd.Update(self)

	local tg = time_global()
	if tmr > tg then return end
	tmr = tg + 100


	-- update hud pos
	self.main:SetWndPos(vector2():set(hud_pos_x, hud_pos_y))


	local dur_t  = talents_functions.durations_t
	if not dur_t then return end

	local talent_stacks_t = {
		["fierce"] = talents_functions.fierce_stacks,
		["spot_weakness"] = talents_functions.spot_weakness_stacks,
	}

	-- update containers
	for talent_var, t in pairs(self.active) do
		-- buff expired
		if dur_t[talent_var] <= 0 then

			-- hide expired container
			self.conts[t.col].cont:Show(false)

			-- move all other containers with higher t.col to right
			for other_tal, other_t in pairs(self.active) do
				if other_tal ~= talent_var and other_t.col > t.col then

					-- hide other container
					self.conts[other_t.col].cont:Show(false)

					-- set new col
					self.active[other_tal].col = self.active[other_tal].col - 1
					local new_col = self.active[other_tal].col

					-- and show it to the right
					self.conts[new_col].icon:InitTexture(other_t.icon)

					self.conts[new_col].stacks_shadow:SetText(other_t.stacks)
					self.conts[new_col].stacks:SetText(other_t.stacks)

					self.conts[new_col].tmr_shadow:SetText(math.ceil(other_t.tmr - 0.1))
					self.conts[new_col].tmr:SetText(math.ceil(other_t.tmr - 0.1))

					self.conts[new_col].cont:Show(true)
				end
			end

			-- and remove from table
			self.active[talent_var] = nil

		end
	end


	-- remove all containers if table empty
	if is_empty(self.active) then
		for i = 1, self.max_cols do
			self.conts[i].cont:Show(false)
		end
	end


	-- add container or update timer
	for talent_var, time in pairs(dur_t) do
		if time > 0 then

			local talent = talent_var:gsub("_var", "")
			local col_size = size_table(self.active)

			if not self.active[talent_var] then
				local new_col = col_size + 1

				self.active[talent_var] = {}
				self.active[talent_var].col = new_col

				-- find, store and set icon
				local icon = "talent_" .. talent
				self.active[talent_var].icon = icon
				self.conts[new_col].icon:InitTexture(icon)
			end

			local cur_col = self.active[talent_var].col

			-- update stacks
			local stacks = talent_stacks_t[talent] and talent_stacks_t[talent] or ""
			self.active[talent_var].stacks = stacks
			self.conts[cur_col].stacks_shadow:SetText(stacks)
			self.conts[cur_col].stacks:SetText(stacks)

			-- update timer
			self.active[talent_var].tmr = math.ceil(time)
			self.conts[cur_col].tmr_shadow:SetText(math.ceil(time))
			self.conts[cur_col].tmr:SetText(math.ceil(time))

			-- show this container
			self.conts[cur_col].cont:Show(true)

		end
	end

end

function talents_hud:__finalize()
end

function on_option_change()
	hud_enable = talents_mcm.get_config("hud_enable")
	hud_pos_x = talents_mcm.get_config("hud_x")
	hud_pos_y = talents_mcm.get_config("hud_y")

	if hud_enable then
		activate_hud()
	else
		deactivate_hud()
	end
end

function on_game_start()
	RegisterScriptCallback("actor_on_first_update", activate_hud)
	RegisterScriptCallback("actor_on_net_destroy", deactivate_hud)
	RegisterScriptCallback("actor_on_before_death", deactivate_hud)
	RegisterScriptCallback("on_option_change", on_option_change)
end