--!strict
local TextService = game:GetService("TextService")
local Constants = require(script.Parent.Constants)

local Sizing = {}

local function FitsHeight(Text: string, Size: number, Face: Font, Height: number): boolean
	local Params = Instance.new("GetTextBoundsParams")
	Params.Text = Text
	Params.Size = Size
	Params.Font = Face
	Params.Width = math.huge
	local Ok, Bounds = pcall(function()
		return TextService:GetTextBoundsAsync(Params)
	end)
	if not Ok then
		return Size <= Height
	end
	return Bounds.Y <= Height
end

function Sizing.Resolve(Text: string, Face: Font, Box: Vector2): number
	local Height = Box.Y
	if Height <= 0 then
		return Constants.MaxTextSize
	end

	local Best = Constants.MinTextSize
	local Low = Constants.MinTextSize
	local High = math.min(Constants.MaxTextSize, math.floor(Height + 0.5))
	while Low <= High do
		local Mid = math.floor((Low + High) / 2)
		if FitsHeight(Text, Mid, Face, Height) then
			Best = Mid
			Low = Mid + 1
		else
			High = Mid - 1
		end
	end
	return Best
end

return Sizing