-- love2talk — vendored from d:\code\love2talk
-- See VENDORED.md for the list of local modifications.

local os = love.system.getOS()

local backend -- upstream leaked this as a global; scoped to the module here

if os == "Windows" then
	backend = require "accessibility.vendor.love2talk.tolk"
	backend.trySAPI(true)
elseif os == "OS X" then
	backend = require "accessibility.vendor.love2talk.macspeech"
end

local function say(text, interrupt)
	if not backend then
		return
	end
	interrupt = interrupt or false
	if os == "Windows" then
		backend.output(text, interrupt)
	else
		backend.output(text)
	end
end

local function isSpeaking()
	if not backend then
		return false
	end
	return backend.isSpeaking()
end

local function silence()
	if not backend or not backend.silence then
		return
	end
	backend.silence()
end

-- LOCAL ADDITION: exposed for diagnostics. Tells us whether Tolk actually found a
-- speech channel (a running screen reader, or the SAPI fallback) as opposed to
-- merely having loaded the DLL successfully.
local function hasSpeech()
	if not backend or not backend.hasSpeech then
		return false
	end
	return backend.hasSpeech()
end

return {say = say, isSpeaking = isSpeaking, silence = silence, hasSpeech = hasSpeech}