local activeMenu
local Debug = ESX.GetConfig().EnableDebug

-- Global functions
-- [ Post | Open | Closed ]

function Post(fn,...)
	SendNUIMessage({
		func = fn,
		args = {...}
	})
end

function Open(position,eles,onSelect,onClose,canClose)
	local canClose = canClose == nil and true or canClose
	activeMenu = {
		position = position,
		eles = eles,
		canClose = canClose,
		onSelect = onSelect,
		onClose = onClose
	}

	LocalPlayer.state:set("context:active",true)

	Post("Open",eles,position)
end

function Closed()
	SetNuiFocus(false,false)

	local menu = activeMenu
	local cb = menu.onClose

	activeMenu = nil

	LocalPlayer.state:set("context:active",false)

	if cb then
		cb(menu)
	end
end

-- Exports
-- [ Preview | Open | Close ]

exports("Preview",Open)

exports("Open",function(...)
	Open(...)
	SetNuiFocus(true,true)
end)

exports("Close",function()
	if not activeMenu then
		return
	end

	Post("Closed")

	Closed()
end)

exports("Refresh",function(eles,position)
	if not activeMenu then
		return
	end

	activeMenu.eles = eles or activeMenu.eles
	activeMenu.position = position or activeMenu.position

	Post("Open",activeMenu.eles,activeMenu.position)
end)

-- NUI Callbacks
-- [ closed | selected | changed ]

RegisterNUICallback("closed",function(_,cb)
	if not activeMenu or (activeMenu and not activeMenu.canClose) then
		return cb(false)
	end
	cb(true)
	Closed()
end)

RegisterNUICallback("selected",function(data,cb)
	if not activeMenu
	or not activeMenu.onSelect
	or not data.index
	then
		return
	end

	local index = tonumber(data.index)
	local ele = activeMenu.eles[index]

	if not ele
	or ele.input
	then
		return
	end

	activeMenu:onSelect(ele)
	if cb then cb('ok') end
end)

RegisterNUICallback("changed",function(data,cb)
	if not activeMenu
	or not data.index
	or not data.value
	then
		return
	end

	local index = tonumber(data.index)
	local ele = activeMenu.eles[index]

	if not ele
	or not ele.input
	then
		return
	end

	if ele.inputType == "number" then
		ele.inputValue = tonumber(data.value)

		if ele.inputMin then
			ele.inputValue = math.max(ele.inputMin,ele.inputValue)
		end

		if ele.inputMax then
			ele.inputValue = math.min(ele.inputMax,ele.inputValue)
		end
	elseif ele.inputType == "text" then
		ele.inputValue = data.value
	elseif ele.inputType == "radio" then
		ele.inputValue = data.value
	end
	if cb then cb('ok') end
end)

-- Keybind

local function focusPreview()
	if not activeMenu
	or not activeMenu.onSelect
	then
		return
	end

	SetNuiFocus(true,true)
end

if PREVIEW_KEYBIND then
	RegisterCommand("previewContext",focusPreview)

	RegisterKeyMapping("previewContext","Preview Active Context","keyboard",PREVIEW_KEYBIND)
end

exports("focusPreview",focusPreview)

-- Debug/Test
-- Commands:
-- [ ctx:preview | ctx:open | ctx:close | ctx:form ]

if Debug then
	local position = "right"

	local eles = {
	 	{
	 		unselectable=true,
	 		icon="fas fa-info-circle",
	 		title="Unselectable Item (Header/Label?)",
	 	},
	 	{
	 		icon="fas fa-check",
	 		title="Item A",
	 		description="Some description here. Add some words to make the text overflow."
	 	},
	 	{
	 		disabled=true,
	 		icon="fas fa-times",
	 		title="Disabled Item",
	 		description="Some description here. Add some words to make the text overflow."
	 	},
	 	{
	 		icon="fas fa-check",
	 		title="Item B",
	 		description="Some description here. Add some words to make the text overflow."
	 	},
	}

	local function onSelect(menu,ele)
		print("Ele selected",ele.title)

		if ele.name == "close" then
			exports["esx_context"]:Close()
		end

		if ele.name ~= "submit" then
			return
		end

		for _,ele in ipairs(menu.eles) do
			if ele.input then
				print(ele.name,ele.inputType,ele.inputValue)
			end
		end

		exports["esx_context"]:Close()
	end

	local function onClose()
		print("Menu closed.")
	end

	RegisterCommand("ctx:preview",function()
		exports["esx_context"]:Preview(position,eles)
	end)

	RegisterCommand("ctx:open",function()
		exports["esx_context"]:Open(position,eles,onSelect,onClose)
	end)

	RegisterCommand("ctx:close",function()
		exports["esx_context"]:Close()
	end)

	RegisterCommand("ctx:form",function()
		local eles = {
			{
				unselectable=true,
				icon="fas fa-info-circle",
				title="Unselectable Item (Header/Label?)",
			},
			{
				icon="",
				title="Input Text",
				input=true,
				inputType="text",
				inputPlaceholder="Placeholder...",
				name="firstname",
			},
			{
				icon="",
				title="Input Text",
				input=true,
				inputType="text",
				inputPlaceholder="Placeholder...",
				name="lastname",
			},
			{
				icon="",
				title="Input Number",
				input=true,
				inputType="number",
				inputPlaceholder="Placeholder...",
				inputValue=0,
				inputMin=0,
				inputMax=50,
				name="age",
			},
			{
				icon = "fas fa-check",
				title = "Submit",
				name = "submit"
			}
		}

		exports["esx_context"]:Open(position,eles,onSelect,onClose)
	end)
end