LibreTube/app/src/main/java/com/github/libretube/PlayerFragment.kt

package com.github.libretube

import android.Manifest
import android.annotation.SuppressLint
import android.app.Activity
import android.content.Context
import android.content.DialogInterface
import android.content.Intent
import android.content.pm.ActivityInfo
import android.content.pm.PackageManager
import android.net.Uri
import android.os.Build
import android.os.Build.VERSION.SDK_INT
import android.os.Bundle
import android.os.Environment
import android.text.Html
import android.util.Log
import android.util.TypedValue
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.*
import androidx.appcompat.app.AlertDialog
import androidx.constraintlayout.motion.widget.MotionLayout
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.core.app.ActivityCompat
import androidx.core.net.toUri
import androidx.core.os.bundleOf
import androidx.fragment.app.Fragment
import androidx.lifecycle.lifecycleScope
import androidx.preference.PreferenceManager
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.github.libretube.adapters.TrendingAdapter
import com.github.libretube.obj.PipedStream
import com.github.libretube.obj.Subscribe
import com.google.android.exoplayer2.ExoPlayer
import com.google.android.exoplayer2.MediaItem
import com.google.android.exoplayer2.MediaItem.SubtitleConfiguration
import com.google.android.exoplayer2.MediaItem.fromUri
import com.google.android.exoplayer2.Player
import com.google.android.exoplayer2.source.DefaultMediaSourceFactory
import com.google.android.exoplayer2.source.MediaSource
import com.google.android.exoplayer2.source.MergingMediaSource
import com.google.android.exoplayer2.source.ProgressiveMediaSource
import com.google.android.exoplayer2.ui.StyledPlayerView
import com.google.android.exoplayer2.upstream.DataSource
import com.google.android.exoplayer2.upstream.DefaultHttpDataSource
import com.google.android.material.button.MaterialButton
import com.squareup.picasso.Picasso
import retrofit2.HttpException
import java.io.IOException
import kotlin.math.abs


var isFullScreen = false
class PlayerFragment : Fragment() {

    private val TAG = "PlayerFragment"
    private var videoId: String? = null
    private var param2: String? = null
    private var lastProgress: Float = 0.toFloat()
    private var sId: Int=0
    private var eId: Int=0
    private var paused =false
    private var whichQuality = 0

    var isSubscribed: Boolean =false

    private lateinit var relatedRecView: RecyclerView
    private lateinit var exoPlayerView: StyledPlayerView
    private lateinit var motionLayout: MotionLayout
    private lateinit var exoPlayer: ExoPlayer
    private lateinit var mediaSource: MediaSource

    private lateinit var relDownloadVideo: RelativeLayout

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            videoId = it.getString("videoId")
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_player, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        hideKeyboard()
        videoId = videoId!!.replace("/watch?v=","")
        relDownloadVideo = view.findViewById(R.id.relPlayer_download)
        val mainActivity = activity as MainActivity
        mainActivity.findViewById<FrameLayout>(R.id.container).visibility=View.VISIBLE
        val playerMotionLayout = view.findViewById<MotionLayout>(R.id.playerMotionLayout)
        motionLayout = playerMotionLayout
        exoPlayerView = view.findViewById(R.id.player)
        view.findViewById<TextView>(R.id.player_description).text = videoId
        playerMotionLayout.addTransitionListener(object: MotionLayout.TransitionListener {
            override fun onTransitionStarted(
                motionLayout: MotionLayout?,
                startId: Int,
                endId: Int
            ) {

            }

            override fun onTransitionChange(motionLayout: MotionLayout?, startId: Int, endId: Int, progress: Float) {
                val mainActivity = activity as MainActivity
                val mainMotionLayout = mainActivity.findViewById<MotionLayout>(R.id.mainMotionLayout)
                mainMotionLayout.progress = abs(progress)
                eId=endId
                sId=startId

            }

            override fun onTransitionCompleted(motionLayout: MotionLayout?, currentId: Int) {
                println(currentId)
                val mainActivity = activity as MainActivity
                val mainMotionLayout = mainActivity.findViewById<MotionLayout>(R.id.mainMotionLayout)
                if (currentId==eId) {
                    view.findViewById<ImageButton>(R.id.quality_select).visibility =View.GONE
                    view.findViewById<ImageButton>(R.id.close_imageButton).visibility =View.GONE
                    view.findViewById<TextView>(R.id.quality_text).visibility =View.GONE
                    mainMotionLayout.progress = 1.toFloat()
                }else if(currentId==sId){
                    view.findViewById<ImageButton>(R.id.quality_select).visibility =View.VISIBLE
                    view.findViewById<ImageButton>(R.id.close_imageButton).visibility =View.VISIBLE
                    view.findViewById<TextView>(R.id.quality_text).visibility =View.VISIBLE
                    mainMotionLayout.progress = 0.toFloat()
                }

            }

            override fun onTransitionTrigger(
                motionLayout: MotionLayout?,
                triggerId: Int,
                positive: Boolean,
                progress: Float
            ) {


            }
        })
        playerMotionLayout.progress=1.toFloat()
        playerMotionLayout.transitionToStart()
        fetchJson(view)
        view.findViewById<ImageView>(R.id.close_imageView).setOnClickListener{
            motionLayout.transitionToEnd()
            val mainActivity = activity as MainActivity
            mainActivity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
            mainActivity.supportFragmentManager.beginTransaction()
                .remove(this)
                .commit()

        }
        view.findViewById<ImageButton>(R.id.close_imageButton).setOnClickListener{
            motionLayout.transitionToEnd()
            val mainActivity = activity as MainActivity
            mainActivity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
            mainActivity.supportFragmentManager.beginTransaction()
                .remove(this)
                .commit()
        }
        val playImageView = view.findViewById<ImageView>(R.id.play_imageView)
        playImageView.setOnClickListener{
            paused = if(paused){
                playImageView.setImageResource(R.drawable.ic_pause)
                exoPlayer.play()
                false
            }else {
                playImageView.setImageResource(R.drawable.ic_play)
                exoPlayer.pause()
                true
            }
        }
        //FullScreen button trigger
        view.findViewById<ImageButton>(R.id.fullscreen).setOnClickListener{
            //remember to hide everything when new thing added
            if (!isFullScreen){
                with(motionLayout) {
                    getConstraintSet(R.id.start).constrainHeight(R.id.player, -1)
                    enableTransition(R.id.yt_transition,false)
                }
                view.findViewById<ConstraintLayout>(R.id.main_container).isClickable =true
                view.findViewById<LinearLayout>(R.id.linLayout).visibility=View.GONE
                val mainActivity = activity as MainActivity
                mainActivity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
                isFullScreen=true

            }else{
                with(motionLayout) {
                    getConstraintSet(R.id.start).constrainHeight(R.id.player, 0)
                    enableTransition(R.id.yt_transition,true)
                }
                view.findViewById<ConstraintLayout>(R.id.main_container).isClickable =false
                view.findViewById<LinearLayout>(R.id.linLayout).visibility=View.VISIBLE
                val mainActivity = activity as MainActivity
                mainActivity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
                isFullScreen=false
            }

        }
        relatedRecView = view.findViewById(R.id.player_recView)
        relatedRecView.layoutManager = GridLayoutManager(view.context, resources.getInteger(R.integer.grid_items))


    }


    override fun onStop() {
        super.onStop()
    }

    override fun onDestroy() {
        super.onDestroy()
        try {
            exoPlayer.stop()
        }catch (e: Exception){}
    }


    private fun fetchJson(view: View) {
        fun run() {
            lifecycleScope.launchWhenCreated {
                val response = try {
                    RetrofitInstance.api.getStreams(videoId!!)
                } catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response")
                    return@launchWhenCreated
                }
                var videosNameArray: Array<CharSequence> = arrayOf()
                videosNameArray += "HLS"
                for (vid in response.videoStreams!!){
                    val name = vid.quality +" "+ vid.format
                    videosNameArray += name
                }
                runOnUiThread {
                    var subtitle = mutableListOf<SubtitleConfiguration>()
                    if(response.subtitles!!.isNotEmpty()){
                        subtitle?.add(SubtitleConfiguration.Builder(response.subtitles!![0].url!!.toUri())
                            .setMimeType(response.subtitles!![0].mimeType!!) // The correct MIME type (required).
                            .setLanguage(response.subtitles!![0].code) // The subtitle language (optional).
                            .build())}

                    exoPlayer = ExoPlayer.Builder(view.context)
                        .setSeekBackIncrementMs(5000)
                        .setSeekForwardIncrementMs(5000)
                        .build()
                    exoPlayerView.setShowSubtitleButton(true)
                    exoPlayerView.setShowNextButton(false)
                    exoPlayerView.setShowPreviousButton(false)
                    //exoPlayerView.controllerShowTimeoutMs = 1500
                    exoPlayerView.controllerHideOnTouch = true
                    exoPlayerView.player = exoPlayer
                    if (response.hls != null) {
                        val mediaItem: MediaItem = MediaItem.Builder()
                            .setUri(response.hls)
                            .setSubtitleConfigurations(subtitle)
                            .build()
                        exoPlayer.setMediaItem(mediaItem)
                    }else{
                        val dataSourceFactory: DataSource.Factory =
                            DefaultHttpDataSource.Factory()
                        val videoItem: MediaItem = MediaItem.Builder()
                            .setUri(response.videoStreams[0].url)
                            .setSubtitleConfigurations(subtitle)
                            .build()
                        val videoSource: MediaSource = DefaultMediaSourceFactory(dataSourceFactory)
                            .createMediaSource(videoItem)
                        var audioSource: MediaSource = DefaultMediaSourceFactory(dataSourceFactory)
                            .createMediaSource(fromUri(response.audioStreams!![0].url!!))
                        if (response.videoStreams[0].quality=="720p" || response.videoStreams[0].quality=="1080p" || response.videoStreams[0].quality=="480p" ){
                            audioSource = ProgressiveMediaSource.Factory(dataSourceFactory)
                                .createMediaSource(fromUri(response.audioStreams!![getMostBitRate(response.audioStreams)].url!!))
                        }
                        val mergeSource: MediaSource = MergingMediaSource(videoSource,audioSource)
                        exoPlayer.setMediaSource(mergeSource)
                    }

                    ///exoPlayer.getMediaItemAt(5)
                    exoPlayer.prepare()
                    exoPlayer.play()

                    view.findViewById<TextView>(R.id.title_textView).text = response.title

                    view.findViewById<ImageButton>(R.id.quality_select).setOnClickListener{
                        //Dialog for quality selection
                        val builder: AlertDialog.Builder? = activity?.let {
                            AlertDialog.Builder(it)
                        }
                        builder!!.setTitle(R.string.choose_quality_dialog)
                            .setItems(videosNameArray,
                                DialogInterface.OnClickListener { _, which ->
                                    whichQuality = which
                                    if(response.subtitles!!.isNotEmpty()) {
                                        var subtitle =
                                            mutableListOf<SubtitleConfiguration>()
                                        subtitle?.add(
                                            SubtitleConfiguration.Builder(response.subtitles!![0].url!!.toUri())
                                                .setMimeType(response.subtitles!![0].mimeType!!) // The correct MIME type (required).
                                                .setLanguage(response.subtitles!![0].code) // The subtitle language (optional).
                                                .build()
                                        )
                                    }
                                    if(which==0){
                                        val mediaItem: MediaItem = MediaItem.Builder()
                                            .setUri(response.hls)
                                            .setSubtitleConfigurations(subtitle)
                                            .build()
                                        exoPlayer.setMediaItem(mediaItem)
                                    }else{
                                        val dataSourceFactory: DataSource.Factory =
                                            DefaultHttpDataSource.Factory()
                                        val videoItem: MediaItem = MediaItem.Builder()
                                            .setUri(response.videoStreams[which-1].url)
                                            .setSubtitleConfigurations(subtitle)
                                            .build()
                                        val videoSource: MediaSource = DefaultMediaSourceFactory(dataSourceFactory)
                                            .createMediaSource(videoItem)
                                        var audioSource: MediaSource = DefaultMediaSourceFactory(dataSourceFactory)
                                            .createMediaSource(fromUri(response.audioStreams!![0].url!!))
                                        if (response.videoStreams[which-1].quality=="720p" || response.videoStreams[which-1].quality=="1080p" || response.videoStreams[which-1].quality=="480p" ){
                                            audioSource = ProgressiveMediaSource.Factory(dataSourceFactory)
                                                .createMediaSource(fromUri(response.audioStreams!![getMostBitRate(response.audioStreams)].url!!))
                                        }
                                        val mergeSource: MediaSource = MergingMediaSource(videoSource,audioSource)
                                        exoPlayer.setMediaSource(mergeSource)
                                    }
                                    view.findViewById<TextView>(R.id.quality_text).text=videosNameArray[which]
                                })
                        val dialog: AlertDialog? = builder?.create()
                        dialog?.show()
                    }
                    //Listener for play and pause icon change
                    exoPlayer!!.addListener(object : com.google.android.exoplayer2.Player.Listener {
                        override fun onPlayerStateChanged(playWhenReady: Boolean,playbackState: Int) {

                            exoPlayerView.keepScreenOn = !(playbackState == Player.STATE_IDLE || playbackState == Player.STATE_ENDED ||
                                    !playWhenReady)

                            if (playWhenReady && playbackState == Player.STATE_READY) {
                                // media actually playing
                                view.findViewById<ImageView>(R.id.play_imageView).setImageResource(R.drawable.ic_pause)
                            } else if (playWhenReady) {
                                // might be idle (plays after prepare()),
                                // buffering (plays when data available)
                                // or ended (plays when seek away from end)
                                view.findViewById<ImageView>(R.id.play_imageView).setImageResource(R.drawable.ic_play)
                            } else {
                                // player paused in any state
                                view.findViewById<ImageView>(R.id.play_imageView).setImageResource(R.drawable.ic_play)
                            }
                        }
                    })
                    relatedRecView.adapter = TrendingAdapter(response.relatedStreams!!)
                    view.findViewById<TextView>(R.id.player_description).text = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                        Html.fromHtml(response.description, Html.FROM_HTML_MODE_COMPACT)
                    } else {
                        Html.fromHtml(response.description)
                    }
                    view.findViewById<TextView>(R.id.player_sub).text = response.views.formatShort() + " views • "+response.uploadDate
                    view.findViewById<TextView>(R.id.textLike).text = response.likes.formatShort()
                    val channelImage = view.findViewById<ImageView>(R.id.player_channelImage)
                    Picasso.get().load(response.uploaderAvatar).into(channelImage)
                    view.findViewById<TextView>(R.id.player_channelName).text=response.uploader
                    view.findViewById<RelativeLayout>(R.id.player_channel).setOnClickListener {

                        val activity = view.context as MainActivity
                        val bundle = bundleOf("channel_id" to response.uploaderUrl)
                        activity.navController.navigate(R.id.channel,bundle)
                        activity.findViewById<MotionLayout>(R.id.mainMotionLayout).transitionToEnd()
                        view.findViewById<MotionLayout>(R.id.playerMotionLayout).transitionToEnd()
                    }
                    val sharedPref = context?.getSharedPreferences("token", Context.MODE_PRIVATE)
                    if(sharedPref?.getString("token","")!=""){
                        val channelId = response.uploaderUrl?.replace("/channel/","")
                        val subButton = view.findViewById<MaterialButton>(R.id.player_subscribe)
                        isSubscribed(subButton, channelId!!)
                    }
                    //share button
                    view.findViewById<RelativeLayout>(R.id.relPlayer_share).setOnClickListener {
                        val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireContext())
                        val intent= Intent()
                        intent.action=Intent.ACTION_SEND
                        var url = "https://piped.kavin.rocks/watch?v=$videoId"
                        val instance = sharedPreferences.getString("instance", "https://pipedapi.kavin.rocks/")!!.dropLast(1)
                        if (instance != "https://pipedapi.kavin.rocks")
                            url += "&instance=$instance"
                        intent.putExtra(Intent.EXTRA_TEXT, url)
                        intent.type="text/plain"
                        startActivity(Intent.createChooser(intent,"Share Url To:"))
                    }
                    //check if livestream
                    if (response.duration!!>0){
                    //download clicked
                    relDownloadVideo.setOnClickListener {
                        if(!IS_DOWNLOAD_RUNNING){
                        val mainActivity = activity as MainActivity
                        Log.e(TAG,"download button clicked!")
                        if (SDK_INT >= Build.VERSION_CODES.R) {
                            Log.d("myz", "" + SDK_INT)
                            if (!Environment.isExternalStorageManager()) {
                                ActivityCompat.requestPermissions(
                                    mainActivity, arrayOf(
                                        Manifest.permission.READ_EXTERNAL_STORAGE,
                                        Manifest.permission.MANAGE_EXTERNAL_STORAGE
                                    ), 1
                                ) //permission request code is just an int
                            }
                        } else {
                            if (ActivityCompat.checkSelfPermission(
                                    requireContext(),
                                    Manifest.permission.READ_EXTERNAL_STORAGE
                                ) != PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(
                                    requireContext(),
                                    Manifest.permission.WRITE_EXTERNAL_STORAGE
                                ) != PackageManager.PERMISSION_GRANTED
                            ) {
                                ActivityCompat.requestPermissions(
                                    mainActivity,
                                    arrayOf(
                                        Manifest.permission.READ_EXTERNAL_STORAGE,
                                        Manifest.permission.WRITE_EXTERNAL_STORAGE
                                    ),
                                    1
                                )
                            }
                        }
                        var vidName = arrayListOf<String>()
                        vidName.add("No video")
                        var vidUrl = arrayListOf<String>()
                        vidUrl.add("")
                        for (vid in response.videoStreams!!){
                            val name = vid.quality +" "+ vid.format
                            vidName.add(name)
                            vidUrl.add(vid.url!!)
                        }
                        var audioName = arrayListOf<String>()
                        audioName.add("No audio")
                        var audioUrl = arrayListOf<String>()
                        audioUrl.add("")
                        for (audio in response.audioStreams!!){
                            val name = audio.quality +" "+ audio.format
                            audioName.add(name)
                            audioUrl.add(audio.url!!)
                        }
                        val newFragment = DownloadDialog()
                        var bundle = Bundle()
                        bundle.putStringArrayList("videoName",vidName)
                        bundle.putStringArrayList("videoUrl",vidUrl)
                        bundle.putStringArrayList("audioName",audioName)
                        bundle.putStringArrayList("audioUrl",audioUrl)
                        bundle.putString("videoId",videoId)
                        bundle.putInt("duration",response.duration)
                        newFragment.arguments = bundle
                        newFragment.show(childFragmentManager, "Download")
                        }else{
                            Toast.makeText(context, R.string.dlisinprogress, Toast.LENGTH_SHORT)
                                .show()
                        }
                        }
                    }else{
                        Toast.makeText(context,R.string.cannotDownload, Toast.LENGTH_SHORT).show()
                    }
                    if (response.hls!=null){
                    view.findViewById<RelativeLayout>(R.id.relPlayer_vlc).setOnClickListener {
                        exoPlayer.pause()
                        try{
                        val vlcRequestCode = 42
                        val uri: Uri = Uri.parse(response.hls)
                        val vlcIntent = Intent(Intent.ACTION_VIEW)
                        vlcIntent.setPackage("org.videolan.vlc")
                        vlcIntent.setDataAndTypeAndNormalize(uri, "video/*")
                        vlcIntent.putExtra("title", response.title)
                        vlcIntent.putExtra("from_start", false)
                        vlcIntent.putExtra("position", exoPlayer.currentPosition)
                        startActivityForResult(vlcIntent, vlcRequestCode)
                        }catch(e: Exception){
                            Toast.makeText(context, R.string.vlcerror, Toast.LENGTH_SHORT)
                                .show()
                        }
                    }}
                }
            }

        }
        run()

    }

    private fun isSubscribed(button: MaterialButton, channel_id: String){
        @SuppressLint("ResourceAsColor")
        fun run() {
            lifecycleScope.launchWhenCreated {
                val response = try {
                    val sharedPref = context?.getSharedPreferences("token", Context.MODE_PRIVATE)
                    RetrofitInstance.api.isSubscribed(channel_id,sharedPref?.getString("token","")!!)
                }catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response")
                    return@launchWhenCreated
                }
                val colorPrimary = TypedValue()
                (context as Activity).theme.resolveAttribute(
                    android.R.attr.colorPrimary,
                    colorPrimary,
                    true)

                val ColorText = TypedValue()
                (context as Activity).theme.resolveAttribute(
                    R.attr.colorOnSurface,
                    ColorText,
                    true)

                runOnUiThread {
                    if (response.subscribed==true){
                        isSubscribed=true
                        button.text=getString(R.string.unsubscribe)
                        button.setTextColor(ColorText.data)
                    }
                    if(response.subscribed!=null){
                    button.setOnClickListener {
                        if(isSubscribed){
                            unsubscribe(channel_id)
                            button.text=getString(R.string.subscribe)
                            button.setTextColor(colorPrimary.data)

                        }else{
                            subscribe(channel_id)
                            button.text=getString(R.string.unsubscribe)
                            button.setTextColor(colorPrimary.data)
                        }
                    }}
                }
            }
        }
        run()
    }

    private fun subscribe(channel_id: String){
        fun run() {
            lifecycleScope.launchWhenCreated {
                val response = try {
                    val sharedPref = context?.getSharedPreferences("token", Context.MODE_PRIVATE)
                    RetrofitInstance.api.subscribe(sharedPref?.getString("token","")!!, Subscribe(channel_id))
                }catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response$e")
                    return@launchWhenCreated
                }
                isSubscribed=true
            }
        }
        run()
    }
    private fun unsubscribe(channel_id: String){
        fun run() {
            lifecycleScope.launchWhenCreated {
                val response = try {
                    val sharedPref = context?.getSharedPreferences("token", Context.MODE_PRIVATE)
                    RetrofitInstance.api.unsubscribe(sharedPref?.getString("token","")!!, Subscribe(channel_id))
                }catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response")
                    return@launchWhenCreated
                }
                isSubscribed=false
            }
        }
        run()
    }


    private fun Fragment?.runOnUiThread(action: () -> Unit) {
        this ?: return
        if (!isAdded) return // Fragment not attached to an Activity
        activity?.runOnUiThread(action)
    }

     private fun getMostBitRate(audios: List<PipedStream>):Int{
        var bitrate =0
        var index = 0
        for ((i, audio) in audios.withIndex()){
            val q = audio.quality!!.replace(" kbps","").toInt()
            if (q>bitrate){
                bitrate=q
                index = i
            }
        }
        return index
    }

    override fun onResume() {
        super.onResume()
    }

}