-- Helper function to lazily instantiate a controller if it does not yet exist,
-- disable the active controller if it is different from the on being switched to,
-- and then enable the requested controller. The argument to this function must be
-- a reference to one of the control modules, i.e. Keyboard, Gamepad, etc.

function ControlModule:SwitchToController(controlModule)
	if not controlModule then
		if self.activeController then
			self.activeController:Enable(false)
		end
		self.activeController = nil
		self.activeControlModule = nil
	else
		if not self.controllers[controlModule] then
			self.controllers[controlModule] = controlModule.new(CONTROL_ACTION_PRIORITY)
		end

		if self.activeController ~= self.controllers[controlModule] then
			if self.activeController then
				self.activeController:Enable(false)
			end
			self.activeController = self.controllers[controlModule]
			self.activeControlModule = controlModule -- Only used to check if controller switch is necessary

			if self.touchControlFrame and (self.activeControlModule == ClickToMove
						or self.activeControlModule == TouchThumbstick
						or self.activeControlModule == DynamicThumbstick) then
				if not self.controllers[TouchJump] then
					self.controllers[TouchJump] = TouchJump.new()
				end
				self.touchJumpController = self.controllers[TouchJump]
				self.touchJumpController:Enable(true, self.touchControlFrame)
			else
				if self.touchJumpController then
					self.touchJumpController:Enable(false)
				end
			end

			self:EnableActiveControlModule()
		end
	end
end

function ControlModule:OnLastInputTypeChanged(newLastInputType)
	if lastInputType == newLastInputType then
		warn("LastInputType Change listener called with current type.")
	end
	lastInputType = newLastInputType

	if lastInputType == Enum.UserInputType.Touch then
		-- TODO: Check if touch module already active
		local touchModule, success = self:SelectTouchModule()
		if success then
			while not self.touchControlFrame do
				wait()
			end
			self:SwitchToController(touchModule)
		end
	elseif computerInputTypeToModuleMap[lastInputType] ~= nil then
		local computerModule = self:SelectComputerMovementModule()
		if computerModule then
			self:SwitchToController(computerModule)
		end
	end

	self:UpdateTouchGuiVisibility()
end
