-- A basic polyfill for the TweenInfo.new function,
-- allows using Enum.EasingStyle/Direction or strings instead

local logError = require "../Logging/logError"
local TweenInfo = {}

function TweenInfo.new(
	time: number?,
	easingStyle: Enum.EasingStyle | string?,
	easingDirection: Enum.EasingDirection | string?,
	repeatCount: number?,
	reverses: boolean?,
	delayTime: number?
)
	local proxy = newproxy(true)
	local mt = getmetatable(proxy)

	-- if easingStyle or easingDirection is an enum,
	-- convert it to a string
	if type(easingStyle) ~= "string" then
		if easingStyle then
			easingStyle = tostring(easingStyle):gsub("Enum.%w+.", "")
		end
	else
		local ok
		for _, s in ipairs {
			"Linear",
			"Quad",
			"Cubic",
			"Quart",
			"Quint",
			"Sine",
			"Exponential",
			"Circular",
			"Elastic",
			"Back",
			"Bounce",
		} do
			if easingStyle == s then
				ok = true
				break
			end
		end
		if not ok then
			logError("invalidEasingStyle", nil, easingStyle)
		end
	end

	if type(easingDirection) ~= "string" then
		if easingDirection then
			easingDirection = tostring(easingDirection):gsub("Enum.%w+.", "")
		end
	else
		local ok
		for _, d in ipairs {
			"In",
			"Out",
			"InOut",
			"OutIn",
		} do
			if easingDirection == d then
				ok = true
				break
			end
		end
		if not ok then
			logError("invalidEasingDirection", nil, easingDirection)
		end
	end

	time = time or 1
	easingStyle = easingStyle or "Quad"
	easingDirection = easingDirection or "Out"
	repeatCount = repeatCount or 0
	reverses = reverses or false
	delayTime = delayTime or 0

	mt.__index = {
		Time = time,
		EasingStyle = easingStyle,
		EasingDirection = easingDirection,
		RepeatCount = repeatCount,
		Reverses = reverses,
		DelayTime = delayTime,
	}

	-- When attempting to assign to properties, throw an error
	mt.__newindex = function(_, prop)
		error(prop .. " cannot be assigned to", math.huge) -- lmfao
	end

	mt.__tostring = function()
		return "Time:"
			.. tostring(time)
			.. " DelayTime:"
			.. tostring(delayTime)
			.. " RepeatCount:"
			.. tostring(repeatCount)
			.. " Reverses:"
			.. (reverses and "True" or "False")
			.. " EasingDirection:"
			.. easingDirection
			.. " EasingStyle:"
			.. easingStyle
	end

	mt.__metatable = "The metatable is locked"

	return proxy
end

return TweenInfo