-- try with barter ui lol
gc = game.translate_string
print_dbg = barter_core.print_dbg

-- imports
get_barter_list             = barter_core.get_barter_list
barter_get_data             = barter_core.barter_get_data
build_string  	            = barter_core.build_string
do_barter		            = barter_core.do_barter
get_desc		            = barter_core.get_desc
npc_has_barter				= barter_core.npc_has_barter
-- temp way to start trade window

----------------------------------------------------------------------
GUI = nil -- instance, don't touch
function start()
	
	local hud = get_hud()
	if (hud) then
		hide_hud_inventory()
	end
	if (not GUI) then
		GUI = UIBarter()
	end
	
	if (GUI) and (not GUI:IsShown()) then
		GUI:Reset()
		GUI:ShowDialog(true)
		Register_UI("UIBarter","barter_ui")
	end
end

function ui_inventory.UIInventory:InitBarterButton()
	self.npc_barter_btn = self.xml:Init3tButton("npc:trade_delimiter:trade_buy_button", self.npc_trade)
	local weight = self.npc_trade_weight:GetWndPos()
	-- printf("trade button at %s %s, delimter at %s %s", pos.x, pos.y, rcoord.x, rcoord.y)
	local pos = self.npc_barter_btn:GetWndPos()

	self.npc_barter_btn:SetWndPos(vector2():set(
		weight.x + 20 , -- TODO: Add sliders in MCM to adjust button position
		pos.y
	))

	self.npc_barter_btn:TextControl():SetText(game.translate_string("st_ui_mm_barter"))
	
	self:Register(self.npc_barter_btn, "barter")

	self:InitBarterButtonCallback()

	local npc = mob_trade.GetTalkingNpc()
	local enable = npc_has_barter(npc)
	self.npc_barter_btn:Enable(enable)

end

function ui_inventory.UIInventory:InitBarterButtonCallback()
	self:AddCallback("barter", ui_events.BUTTON_CLICKED, start, self)
end

function GUI_on_show(name, path)
	local instance = ui_inventory.GUI
	if name ~= "UIInventory" or (not instance ) then return end

	if (not instance.npc_barter_btn) then
		instance:InitBarterButton()
	end
	local partner = instance:GetPartner()
	instance.npc_barter_btn:Show(partner and npc_has_barter(partner))
end

function on_game_start()
	RegisterScriptCallback("GUI_on_show", GUI_on_show)
end

----------------------------------------------------------------------
-- UI
----------------------------------------------------------------------
class "UIBarter" (CUIScriptWnd)

function UIBarter:__init(obj,section) super()
	self.section = section
	self.obj = obj
	
	-- Reload settings
	self.clr_b = utils_xml.get_color("pda_blue")

	self:InitControls()
	self:InitCallBacks()
end

function UIBarter:__finalize()
end

function UIBarter:InitControls()
	self:SetWndRect			(Frect():set(0,0,1024,768))
	self:SetAutoDelete(true)
	
	self.xml				= CScriptXmlInit()
	local xml = self.xml
	xml:ParseFile			("ui_barter.xml")

	self.dialog					= xml:InitStatic("barter", self)
	xml:InitStatic("barter:background", self.dialog)
	self.cap_menu 					= xml:InitTextWnd("barter:cap_tab" , self.dialog)
	
	self.cap           = {}
	self.b_inv         = {}
	self.b_item        = {}
	self.list          = {} -- List of items
	self.cell_item     = {} -- infobox (rename)
	self.cell_scroll   = {} -- infobox scroll (rename)
	self.text_item     = {} -- Item to be traded for
	self.CC            = {}
	for i=1,2 do
		self.cap[i]               = xml:InitStatic("barter:cap_barter_" .. tostring(i),self.dialog)
		self.b_inv[i]             = xml:InitStatic("barter:back_inv_" .. tostring(i) , self.dialog)
		self.b_item[i]            = xml:InitStatic("barter:back_item_" .. tostring(i) , self.dialog)
		self.text_item[i]         = xml:InitTextWnd("barter:text_item_" .. tostring(i) , self.dialog)
		self.cell_item[i]		  = xml:InitTextWnd("barter:box_item_" .. tostring(i) , nil)
		self.cell_scroll[i]		  = xml:InitScrollView("barter:scroll_desc_" .. tostring(i) , self.dialog)
		self.cell_scroll[i]:AddWindow(self.cell_item[i], true)
		self.cell_item[i]:SetAutoDelete(false)

		self.CC[i]                = barter_cellcont.UIBarterCellContainer(i, self, nil, "barter:cont_inv_" .. tostring(i), self.dialog)
		self.CC[i].can_select	  = true
		self.CC[i].disable_drag   = true
		self.CC[i].showcase	 	  = true
		self.CC[i]:SetGridSpecs(35, 2)
	end
	self.CC[1].sort_method = "none"
	self.CC[2].sort_method = "none"
	self.item_info = utils_ui.UIInfoItem(self, 1000)
	
	-- Main icon - change to npc face
	self.box_item_main = xml:InitStatic("barter:pic_item_main" , self.dialog)
	self.box_item_main_temp = xml:InitStatic("barter:pic_item_main" , self.dialog)
	
	-- Main Buttons
	self.btn_barter = xml:Init3tButton("barter:btn_barter", self.dialog)
	self:Register(self.btn_barter,"btn_barter")
	
	self.btn_cancel = xml:Init3tButton("barter:btn_back", self.dialog)
	self:Register(self.btn_cancel,"btn_cancel")
end

function UIBarter:InitCallBacks()
	self:AddCallback("btn_barter", ui_events.BUTTON_CLICKED, self.OnBarter, self)
	self:AddCallback("btn_cancel", ui_events.BUTTON_CLICKED, self.OnCancel, self)
end

function UIBarter:Reset()
    local npc = mob_trade.GetTalkingNpc()
	self.section = npc:section()

	-- Settings
	self.barter_frame      =  "ui_itm_repair_1"
	self.barters = get_barter_list(npc) -- barters for this npc
	self.index_barter = {} -- 
	self.selected = "" -- currently selected barter
	
	-- Elements
	self.CC[2]:Reset()
	self.text_item[1]:SetText("")
	self.text_item[2]:SetText("")
	self.cell_item[1]:SetText("")
	self.cell_item[2]:SetText("")
	self.btn_barter:Enable(false)
	-- string.format(gc("st_ui_barter_rules"), get_config("cond"))
	local to_show = true --self.use_parts and true or false
	self.cap[2]:Show(to_show)
	self.b_inv[2]:Show(to_show)
	self.b_item[2]:Show(to_show)
	self.text_item[2]:Show(to_show)
	self.CC[2]:Show(to_show)
	
	-- Set npc face
	if npc:section() == "m_trader" then
		self.box_item_main:InitTexture( "ui_saff" )
	else
		self.box_item_main:InitTexture( npc:character_icon() )
	end
	-- Set npc trader name
	self.cap_menu:SetText(gc(npc:character_name()))
	
	-- Show barters
	self:InitInventory(1)

	-- Hide active item
	actor_effects.toggle_active_slot(0) 
end 

local clr_g  = utils_xml.get_color("d_green", true)
local clr_r  = utils_xml.get_color("d_red", true)
function UIBarter:InitInventory(n)
	local inv = {}
	local inf = {}

	-- get all the barters for this npc
    -- gray out items and make unclickable if not valid
	if n == 1 then
		local prev_rank = nil
		for k,v in pairs(self.barters) do
			-- custom cell container supports adding 'newlines' which will force subsequent items to start occupying the next line
			-- default behavior segments based on sort rank
			if not prev_rank then prev_rep = v.sort_rank end 
			if prev_rank ~= v.sort_rank then
				inv[#inv+1] = "newline"
				inf[#inf+1] = ""
				prev_rank = v.sort_rank
			end
            inv[#inv+1] = v.give.sec
			inf[#inf+1] = v.amt and v.amt .. "/" .. v.limit or ""
		end
		self.CC[1]:Reinit(inv, inf)

		-- colorize what can be traded for
		for i,ci in pairs(self.CC[1].cell) do
			if ci:IsShown() then
				local b = self.barters[ci.indx]
				if b.allowed then
					ci:Colorize("def")
				else
					ci:Colorize("hide")
				end
				if ci.flags.info ~= "" then
					local clr = b.amt < b.limit and clr_g or clr_r
					ci:Add_CustomText(ci.flags.info, nil, nil, clr, fnt)
				end
			end
		end
	-- get all the required items to exchange, grayed out if requirements not met
	elseif n == 2 then
		-- assume self.selected has the selected barter
		if not self.selected then return end
		local barter_data = self.barters[self.selected]
		local take = barter_data.take_items
		for i=1,#take do
			if take[i].sec == "money" then
	            inv[#inv+1] = "money_1000_5000"
				inf[#inf+1] = take[i].limit
			else
	            inv[#inv+1] = take[i].sec
				inf[#inf+1] = take[i].amt .. "/" .. take[i].limit
			end
		end

		-- second arg to reinit paints the numbered cell with the appropriate text
		self.CC[2]:Reinit(inv, inf)
		local fnt = GetFontSmall()
		for i,ci in pairs(self.CC[2].cell) do
			if ci:IsShown() then
				local data = take[ci.indx]
				local clr = clr_r
				if data.amt < data.limit then
					ci:Colorize("hide")
				else
					ci:Colorize("def")
					clr = clr_g
				end
				ci:Add_CustomText(ci.flags.info, nil, nil, clr, fnt)
			end
		end
		
	end
end

function UIBarter:Update()
	CUIScriptWnd.Update(self)
	
	-- Warning messages timer 
	if (self.msg_wnd_timer and time_global() > self.msg_wnd_timer) then 
		self.msg_wnd_timer = nil
		self.msg_wnd:Show(false)
	end
	
	-- Updating item info box and item cell containers
	local found_cell = false
	for name,cc in pairs(self.CC) do
		found_cell = cc:Update(self.item_info) or found_cell
	end
	if (not found_cell) then
		self.item_info:Update()
	end
end 

-- Callbacks
function UIBarter:On_CC_Mouse1(cont, idx)
	-- idx is the cell clicked, check index_barter to determine name
	local ci = self.CC[cont].cell[idx]
	if ci then
		self:OnItemSelect(cont)
		if cont == 1 then
			self:InitInventory(2)
		end
	end
end

-- set the text box to be scrolly n shit
function UIBarter:SetWindowText(n, str)
	
	self.cell_item[n]:SetText(str)
	self.cell_item[n]:AdjustHeightToText()
	self.cell_item[n]:SetWndSize(vector2():set(self.cell_item[n]:GetWidth(),self.cell_item[n]:GetHeight()+10))
	self.cell_scroll[n]:Clear()
	self.cell_scroll[n]:AddWindow(self.cell_item[n], true)
	self.cell_item[n]:SetAutoDelete(false)
	
end

function UIBarter:OnItemSelect(n)
	local obj_1 = self.CC[1]:GetCell_Selected()
	local idx = obj_1.indx

	if n == 1 then
		self.selected = idx
		-- -- Text (Name)
		local give = self.barters[self.selected].give
		local name = barter_core.get_give_str(give)
		-- set name of barter give item
		self.text_item[n]:SetText(name)
		self:SetWindowText(1, gc(get_desc(self.barters[self.selected].name)))
		self:SetWindowText(2, build_string(self.barters[self.selected].name))
		
		if self.barters[self.selected].type == "allOf" then
			self.btn_barter:Enable(self.barters[self.selected].allowed)
		else
			self.btn_barter:Enable(false)
		end
	else
		-- for anyof barters, if the selected item is sufficient use that
		local barter_data = self.barters[self.selected]
		if barter_data.type ~= "anyOf" then return end
		-- check if the selected cell is full
		local obj_n = self.CC[n]:GetCell_Selected()
		local n_indx = obj_n.indx
		local take = barter_data.take_items[n_indx]
		print_dbg("Any of check index %s, selected item %s", n_indx, take.sec)
		local name = ui_item.get_sec_name(take.sec)
		-- set name of barter give item
		self.text_item[n]:SetText(name)
		self.btn_barter:Enable(take.amt >= take.limit and barter_data.allowed)
	end
end

function UIBarter:OnBarter()
	local obj_1 = self.CC[1]:GetCell_Selected()
	local obj_2 = self.CC[2]:GetCell_Selected()
	
	do_barter(self.barters[self.selected].name, self.barters[self.selected].give, self.barters[self.selected].take_items, obj_2 and obj_2.indx)
	-- consider resetting ui?
	self.CC[1]:Reset()
	CreateTimeEvent("barter", math.random(69), 0, function()
		self:Reset()
		return true
	end)
end

function UIBarter:OnKeyboard(dik, keyboard_action)
	local res = CUIScriptWnd.OnKeyboard(self,dik,keyboard_action)
	if (res == false) then
		for i=1,#self.CC do
			if self.CC[i]:IsShown() then
				self.CC[i]:OnKeyboard(dik, keyboard_action)
			end
		end
		
		local bind = dik_to_bind(dik)
		if keyboard_action == ui_events.WINDOW_KEY_PRESSED then
			if dik == DIK_keys.DIK_ESCAPE then
				self:OnCancel()
			end
		end
	end
	return res
end

function UIBarter:OnCancel()
	utils_obj.play_sound("interface\\inv_close")
	
	self:HideDialog()
	
	Unregister_UI("UIBarter")
end