discord.lua

local msg = require("mp.msg")
local opts = require("mp.options")
local utils = require("mp.utils")

local options = {
	key = "D",
	active = true,
	client_id = "737663962677510245",
	binary_path = "",
	socket_path = "/tmp/mpvsocket",
	use_static_socket_path = true,
	autohide_threshold = 0,
}
opts.read_options(options, "discord")

function detect_platform() --function to detect platform
	local o = {}
	if mp.get_property_native('options/vo-mmcss-profile', o) ~= o then
		return "windows"
	elseif mp.get_property_native('options/input-app-events', o) ~= o then
		return "darwin"
	end
	return "linux"
end

if options.binary_path == "" then --sets the binary_path to a default location in mpv config if no location is specified in discord.conf
	local platform = detect_platform()
		if platform == "windows" then
			options.binary_path = mp.command_native({"expand-path", "~~home/"}) .. "/bin/windows/mpv-discord.exe"
		elseif platform == "darwin" then
			options.binary_path = mp.command_native({"expand-path", "~~home/"}) .. "/bin/darwin/mpv-discord"
		elseif platform == "linux" then
			options.binary_path = mp.command_native({"expand-path", "~~home/"}) .. "/bin/linux/mpv-discord"
		end
end

function file_exists(path) -- fix(#23): use this instead of utils.file_info
	local f = io.open(path, "r")
	if f ~= nil then
		io.close(f)
		return true
	else
		return false
	end
end

if not file_exists(options.binary_path) then
	msg.fatal("The specified binary path does not exist.")
	os.exit(1)
end

local version = "1.6.1"
msg.info(("mpv-discord v%s by tnychn"):format(version))

local socket_path = options.socket_path
if not options.use_static_socket_path then
	local pid = utils.getpid()
	local filename = ("mpv-discord-%s"):format(pid)
	if socket_path == "" then
		socket_path = "/tmp/" -- default
	end
	socket_path = utils.join_path(socket_path, filename)
elseif socket_path == "" then
	msg.fatal("Missing socket path in config file.")
	os.exit(1)
end
msg.info(("(mpv-ipc): %s"):format(socket_path))
mp.set_property("input-ipc-server", socket_path)

local cmd = nil

local function start()
	if cmd == nil then
		cmd = mp.command_native_async({
			name = "subprocess",
			playback_only = false,
			args = {
				options.binary_path,
				socket_path,
				options.client_id,
			},
		}, function() end)
		msg.info("launched subprocess")
		mp.osd_message("Discord Rich Presence: Started")
	end
end

function stop()
	mp.abort_async_command(cmd)
	cmd = nil
	msg.info("aborted subprocess")
	mp.osd_message("Discord Rich Presence: Stopped")
end

if options.active then
	mp.register_event("file-loaded", start)
end

mp.add_key_binding(options.key, "toggle-discord", function()
	if cmd ~= nil then
		stop()
	else
		start()
	end
end)

mp.register_event("shutdown", function()
	if cmd ~= nil then
		stop()
	end
	if not options.use_static_socket_path then
		os.remove(socket_path)
	end
end)

if options.autohide_threshold > 0 then
	local timer = nil
	local t = options.autohide_threshold
	mp.observe_property("pause", "bool", function(_, value)
		if value == true then
			timer = mp.add_timeout(t, function()
				if cmd ~= nil then
					stop()
				end
			end)
		else
			if timer ~= nil then
				timer:kill()
				timer = nil
			end
			if options.active and cmd == nil then
				start()
			end
		end
	end)
end