--- Returns a new ArgumentContext, an object that handles parsing and validating arguments

function Argument.new (command, argumentObject, value)
	local self = {
		Command = command; -- The command that owns this argument
		Type = nil; -- The type definition
		Name = argumentObject.Name; -- The name for this specific argument
		Object = argumentObject; -- The raw ArgumentObject (definition)
		Required = argumentObject.Default == nil and argumentObject.Optional ~= true; -- If the argument is required or not.
		Executor = command.Executor; -- The player who is running the command
		RawValue = value; -- The raw, unparsed value
		RawSegments = {}; -- The raw, unparsed segments (if the raw value was comma-sep)
		TransformedValues = {}; -- The transformed value (generated later)
		Prefix = ""; -- The prefix for this command (%Team)
		TextSegmentInProgress = ""; -- The text of the raw segment the user is currently typing.
		RawSegmentsAreAutocomplete = false;
	}

	if type(argumentObject.Type) == "table" then
		self.Type = argumentObject.Type
	else
		local parsedType, parsedRawValue, prefix = Util.ParsePrefixedUnionType(
			command.Cmdr.Registry:GetTypeName(argumentObject.Type),
			value
		)

		self.Type = command.Dispatcher.Registry:GetType(parsedType)
		self.RawValue = parsedRawValue
		self.Prefix = prefix

		if self.Type == nil then
			error(string.format("%s has an unregistered type %q", self.Name or "<none>", parsedType or "<none>"))
		end
	end

	setmetatable(self, Argument)

	self:Transform()

	return self
end

function Argument:GetDefaultAutocomplete()
	if self.Type.Autocomplete then
		local strings, options = self.Type.Autocomplete(self:TransformSegment(""))
		return strings, options or {}
	end

	return {}
end
