youtube live check

openresty_api.lua

package.path = package.path..";/www/wwwroot/tcy2b.papapoi.com/?.lua"
json = require("JSON")

channel = ngx.req.get_uri_args()["c"]
if not channel then ngx.say(json:encode({error = "no c found"})) return end

hc = require('httpclient').new()
res = hc:get("https://www.youtube.com/channel/"..channel.."/live")
if not res.body then ngx.say(json:encode({error = res.err})) return end

if ngx.req.get_uri_args()["debug"] == "on" then
	ngx.say(res.body)
	return
end

local ytplayer_config = res.body:match("ytplayer.config *= *(.-});")
if not ytplayer_config then ngx.say(json:encode({error = "no this channel"})) return end
local info = json:decode(json:decode(ytplayer_config)['args']['player_response'])

local result = {}
result.live = info.videoDetails.isLive
result.title = info.videoDetails.title
result.url = "https://youtu.be/"..info.videoDetails.videoId
result.thumbnail = info.videoDetails.thumbnail.thumbnails[#info.videoDetails.thumbnail.thumbnails].url
result.channel = info.videoDetails.channelId

ngx.say(json:encode(result))