json = require "json"
local media = {}
function pop(cmd)
	local f = assert(io.popen(cmd, 'r'))
	local s = assert(f:read('*a'))
	f:close()
	return s
end

function media.getVideoUrl(yurl)
	if yurl == nil then return 0 end
	local h = hintbox.new{caption="Please Wait ...", text="I'm Thinking."}
	if h then
		h:paint()
	end

	local data = pop("/usr/bin/yt-dlp --dump-single-json " .. yurl)
	local itagnum = 0
	local urls = {}
	local video = nil
	media.VideoUrl = nil
	media.UrlVideoAudio = nil

	if data then
		local jnTab = json:decode(data)
		if jnTab ~= nil then
			for k,v in pairs(jnTab.formats) do
				--if v.audio_channels == 2 and v.resolution ~= "audio only" then
				if v.resolution ~= "audio only" then
					itagnum = tonumber(v.format_id)
					if itagnum == 22 or itagnum == 18 or itagnum == 95 then
						urls[itagnum] = v.url
					end
					if v.resolution then
						print(v.format,v.resolution)
					end
				end
			end
		end
		
		video = urls[22]
		if video then
			media.VideoUrl = video
		else
			media.VideoUrl = urls[18]
		end
		
		if urls[95] then
			media.VideoUrl = urls[95]
		end
	end
	if h then
		h:hide()
	end
end

return media