Fetch youtube URL for live stream

YoutubeExtactor.kt

    fun convertLinkToHls(youtubeLiveLink: String, activity: Activity) {
        val hlsLink = arrayOf("")
        val runnableCode = Runnable {
            try {
                val url = URL(youtubeLiveLink)
                val con: HttpURLConnection = url.openConnection() as HttpURLConnection
                con.requestMethod = "GET"
                val `in` = BufferedReader(
                    InputStreamReader(con.inputStream)
                )
                var inputLine: String?
                val content = StringBuffer()
                while (`in`.readLine().also { inputLine = it } != null) {
                    content.append(inputLine)
                }
                `in`.close()
                if (youtubeLiveLink.contains("m3u8")) {
                    hlsLink[0] = youtubeLiveLink
                } else {
                    hlsLink[0] = extractHlsUrl(content.toString()).toString()
                }
                con.disconnect()
            } catch (e: Exception) {
                hlsLink[0] = youtubeLiveLink
                e.printStackTrace()
                Log.d(
                    "TAG", "convertLinkToHls: " +
                            ": Reason is that the link is not a live url," +
                            "copy the link by open video then right click, copy video url from youtube."
                )
            }
        }
        val requestThread = Thread(runnableCode)
        requestThread.start()
        val timer = Timer()

        timer.schedule(object : TimerTask() {
            override fun run() {
                if (!requestThread.isAlive) {
                    // hlsLink[0]
                    activity.runOnUiThread {
                        liveUrlLiveData.value = hlsLink[0]
                    }
                    /*runOnUiThread {
                        initializePlayer()
                    }*/
                    timer.cancel()

                    /* Here initialize the player,
                     * make you do it in runOnUiTHread() */
                }
            }

        }, 1000, 1000)

    }

    private fun extractHlsUrl(response: String): String? {
        val keyName = "hlsManifestUrl"
        if (response.contains(keyName)) {
            var index = response.indexOf(keyName)
            index += 17
            var lastIndex = index
            while (lastIndex < response.length) {
                if (response[lastIndex] == '8' &&
                    response[lastIndex - 1] == 'u' &&
                    response[lastIndex - 2] == '3' &&
                    response[lastIndex - 3] == 'm'
                ) {
                    break
                }
                lastIndex++
            }
            return response.substring(index, lastIndex + 1)
        }
        return null
    }