riff_app/app/src/main/java/fr/forum_thalie/tsumugi/ui/nowplaying/NowPlayingFragment.kt

package fr.forum_thalie.tsumugi.ui.nowplaying

import android.annotation.SuppressLint
import android.content.ClipboardManager
import android.content.Context
import androidx.lifecycle.ViewModelProviders
import android.os.Bundle
import android.support.v4.media.session.PlaybackStateCompat
import android.util.Log
import android.util.TypedValue
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.*
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.constraintlayout.widget.ConstraintSet
import androidx.core.widget.TextViewCompat
import androidx.lifecycle.Observer
import com.google.android.material.snackbar.BaseTransientBottomBar
import com.google.android.material.snackbar.Snackbar
import fr.forum_thalie.tsumugi.*
import fr.forum_thalie.tsumugi.alarm.RadioSleeper
import fr.forum_thalie.tsumugi.playerstore.PlayerStore
import fr.forum_thalie.tsumugi.playerstore.Song


class NowPlayingFragment : Fragment() {

    private lateinit var root: View
    private lateinit var nowPlayingViewModel: NowPlayingViewModel

    @SuppressLint("SetTextI18n")
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {

        nowPlayingViewModel = ViewModelProviders.of(this).get(NowPlayingViewModel::class.java)
        root = inflater.inflate(R.layout.fragment_nowplaying, container, false)

        // View bindings to the ViewModel
        val songTitleText: TextView = root.findViewById(R.id.text_song_title)
        val songArtistText: TextView = root.findViewById(R.id.text_song_artist)
        val seekBarVolume: SeekBar = root.findViewById(R.id.seek_bar_volume)
        val volumeText: TextView = root.findViewById(R.id.volume_text)
        val progressBar: ProgressBar = root.findViewById(R.id.progressBar)
        val volumeIconImage : ImageView = root.findViewById(R.id.volume_icon)

        // Note: these values are not used in the generic app
        val streamerPictureImageView: ImageView = root.findViewById(R.id.streamerPicture)
        /*
        val streamerNameText : TextView = root.findViewById(R.id.streamerName)
        val songTitleNextText: TextView = root.findViewById(R.id.text_song_title_next)
        val songArtistNextText: TextView = root.findViewById(R.id.text_song_artist_next)
        val listenersText : TextView = root.findViewById(R.id.listenersCount)
         */


        /*
        TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(
            streamerNameText,8, 20, 2, TypedValue.COMPLEX_UNIT_SP)
        TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(
            listenersText,8, 16, 2, TypedValue.COMPLEX_UNIT_SP)
         */

        /*
        // trick : I can't observe the queue because it's an ArrayDeque that doesn't trigger any change...
        // so I observe a dedicated Mutable that gets set when the queue is updated.
        PlayerStore.instance.isQueueUpdated.observe(viewLifecycleOwner, Observer {
            val t = if (PlayerStore.instance.queue.size > 0) PlayerStore.instance.queue[0] else Song("No queue - ") // (it.peekFirst != null ? it.peekFirst : Song() )
            songTitleNextText.text = t.title.value
            songArtistNextText.text = t.artist.value
        })

        PlayerStore.instance.streamerName.observe(viewLifecycleOwner, Observer {
            streamerNameText.text = it
        })

        PlayerStore.instance.listenersCount.observe(viewLifecycleOwner, Observer {
            listenersText.text = "${getString(R.string.listeners)}: $it"
        })
         */


        PlayerStore.instance.currentSong.title.observe(viewLifecycleOwner, Observer {
                songTitleText.text = it
        })

        PlayerStore.instance.currentSong.artist.observe(viewLifecycleOwner, Observer {
                songArtistText.text = it
        })

        PlayerStore.instance.playbackState.observe(viewLifecycleOwner, Observer {
            syncPlayPauseButtonImage(root)
        })


        fun volumeIcon(it: Int)
        {
            volumeText.text = "$it%"
            when {
                it > 66 -> volumeIconImage.setImageResource(R.drawable.ic_volume_high)
                it in 33..66 -> volumeIconImage.setImageResource(R.drawable.ic_volume_medium)
                it in 0..33 -> volumeIconImage.setImageResource(R.drawable.ic_volume_low)
                else -> volumeIconImage.setImageResource(R.drawable.ic_volume_off)
            }
        }

        PlayerStore.instance.volume.observe(viewLifecycleOwner, Observer {
            volumeIcon(it)
            seekBarVolume.progress = it // this updates the seekbar if it's set by something else when going to sleep.
        })

        PlayerStore.instance.isMuted.observe(viewLifecycleOwner, Observer {
            if (it)
                volumeIconImage.setImageResource(R.drawable.ic_volume_off)
            else
                volumeIcon(PlayerStore.instance.volume.value!!)
        })


        PlayerStore.instance.streamerPicture.observe(viewLifecycleOwner, Observer { pic ->
            streamerPictureImageView.setImageBitmap(pic)
        })

        // fuck it, do it on main thread
        PlayerStore.instance.currentTime.observe(viewLifecycleOwner, Observer {
            val dd = (PlayerStore.instance.currentTime.value!! - PlayerStore.instance.currentSong.startTime.value!!).toInt()
            progressBar.progress = dd
        })

        PlayerStore.instance.currentSong.stopTime.observe(viewLifecycleOwner, Observer {
            val dd = (PlayerStore.instance.currentSong.stopTime.value!! - PlayerStore.instance.currentSong.startTime.value!!).toInt()
            progressBar.max = dd
        })

        PlayerStore.instance.currentSong.stopTime.observe(viewLifecycleOwner, Observer {
            val t : TextView= root.findViewById(R.id.endTime)
            val minutes: String = ((PlayerStore.instance.currentSong.stopTime.value!! - PlayerStore.instance.currentSong.startTime.value!!)/60/1000).toString()
            val seconds: String = ((PlayerStore.instance.currentSong.stopTime.value!! - PlayerStore.instance.currentSong.startTime.value!!)/1000%60).toString()
            t.text = "$minutes:${if (seconds.toInt() < 10) "0" else ""}$seconds"
        })

        PlayerStore.instance.currentTime.observe(viewLifecycleOwner, Observer {
            val t : TextView= root.findViewById(R.id.currentTime)
            val minutes: String = ((PlayerStore.instance.currentTime.value!! - PlayerStore.instance.currentSong.startTime.value!!)/60/1000).toString()
            val seconds: String = ((PlayerStore.instance.currentTime.value!! - PlayerStore.instance.currentSong.startTime.value!!)/1000%60).toString()
            t.text = "$minutes:${if (seconds.toInt() < 10) "0" else ""}$seconds"

            val sleepInfoText = root.findViewById<TextView>(R.id.sleepInfo)
            val sleepAtMillis = RadioSleeper.instance.sleepAtMillis.value
            if (sleepAtMillis != null)
            {
                val duration = ((sleepAtMillis - System.currentTimeMillis()).toFloat() / (60f * 1000f) + 1).toInt() // I put 1 + it because the division rounds to the lower integer. I'd like to display the round up, like it's usually done.
                sleepInfoText.text = "Will close in $duration minute${if (duration > 1) "s" else ""}"
                sleepInfoText.visibility = View.VISIBLE
            } else {
                sleepInfoText.visibility = View.GONE
            }
        })


        seekBarVolume.setOnSeekBarChangeListener(nowPlayingViewModel.seekBarChangeListener)
        seekBarVolume.progress = PlayerStore.instance.volume.value!!
        progressBar.max = 1000
        progressBar.progress = 0

        syncPlayPauseButtonImage(root)

        // initialize the value for isPlaying when displaying the fragment
        PlayerStore.instance.isPlaying.value = PlayerStore.instance.playbackState.value == PlaybackStateCompat.STATE_PLAYING

        val button: ImageButton = root.findViewById(R.id.play_pause)
        button.setOnClickListener{
            PlayerStore.instance.isPlaying.value = PlayerStore.instance.playbackState.value == PlaybackStateCompat.STATE_STOPPED
        }

        val setClipboardListener: View.OnLongClickListener = View.OnLongClickListener {
            val text = PlayerStore.instance.currentSong.artist.value + " - " + PlayerStore.instance.currentSong.title.value
            val clipboard = context!!.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
            val clip = android.content.ClipData.newPlainText("Copied Text", text)
            clipboard.setPrimaryClip(clip)
            val snackBarLength = if (preferenceStore.getBoolean("snackbarPersistent", true))
                Snackbar.LENGTH_INDEFINITE
            else Snackbar.LENGTH_LONG
            val snackBar = Snackbar.make(it, "", snackBarLength)

            if (snackBarLength == Snackbar.LENGTH_INDEFINITE)
                snackBar.setAction("OK") { snackBar.dismiss() }

            snackBar.behavior = BaseTransientBottomBar.Behavior().apply {
                setSwipeDirection(BaseTransientBottomBar.Behavior.SWIPE_DIRECTION_ANY)
            }
            snackBar.setText(getString(R.string.song_to_clipboard))
            snackBar.show()
            true
        }

        songTitleText.setOnLongClickListener(setClipboardListener)
        songArtistText.setOnLongClickListener(setClipboardListener)

        if (preferenceStore.getBoolean("splitLayout", true))
            root.addOnLayoutChangeListener(splitLayoutListener)

        return root
    }

    private val splitLayoutListener : View.OnLayoutChangeListener = View.OnLayoutChangeListener { _: View, _: Int, _: Int, _: Int, _: Int, _: Int, _: Int, _: Int, _: Int ->

        val isSplitLayout = preferenceStore.getBoolean("splitLayout", true)

        val viewHeight = (root.rootView?.height ?: 1)
        val viewWidth = (root.rootView?.width ?: 1)

        val newRatio = if (viewWidth > 0)
            (viewHeight*100)/viewWidth
        else
            100

        if (isSplitLayout && nowPlayingViewModel.screenRatio != newRatio) {
            onOrientation()
        }
    }

    override fun onViewStateRestored(savedInstanceState: Bundle?) {
        onOrientation()
        super.onViewStateRestored(savedInstanceState)
    }

    private fun onOrientation() {
        val viewHeight = (root.rootView?.height ?: 1)
        val viewWidth = (root.rootView?.width ?: 1)

        val isSplitLayout = preferenceStore.getBoolean("splitLayout", true)

        // modify layout to adapt for portrait/landscape
        val isLandscape = viewHeight.toDouble()/viewWidth.toDouble() < 1
        val parentLayout = root.findViewById<ConstraintLayout>(R.id.parentNowPlaying)
        val constraintSet = ConstraintSet()
        constraintSet.clone(parentLayout)

        if (isLandscape && isSplitLayout)
        {
            constraintSet.connect(R.id.layoutBlock1, ConstraintSet.BOTTOM, R.id.parentNowPlaying, ConstraintSet.BOTTOM)
            constraintSet.connect(R.id.layoutBlock1, ConstraintSet.END, R.id.splitHorizontalLayout, ConstraintSet.END)
            constraintSet.connect(R.id.layoutBlock2, ConstraintSet.TOP, R.id.parentNowPlaying, ConstraintSet.TOP)
            constraintSet.connect(R.id.layoutBlock2, ConstraintSet.START, R.id.splitHorizontalLayout, ConstraintSet.END)
            constraintSet.setMargin(R.id.layoutBlock1, ConstraintSet.END, 16)
            constraintSet.setMargin(R.id.layoutBlock2, ConstraintSet.START, 16)
        } else {
            constraintSet.connect(R.id.layoutBlock1, ConstraintSet.BOTTOM, R.id.splitVerticalLayout, ConstraintSet.BOTTOM)
            constraintSet.connect(R.id.layoutBlock1, ConstraintSet.END, R.id.parentNowPlaying, ConstraintSet.END)
            constraintSet.connect(R.id.layoutBlock2, ConstraintSet.TOP, R.id.splitVerticalLayout, ConstraintSet.BOTTOM)
            constraintSet.connect(R.id.layoutBlock2, ConstraintSet.START, R.id.parentNowPlaying, ConstraintSet.START)
            constraintSet.setMargin(R.id.layoutBlock1, ConstraintSet.END, 0)
            constraintSet.setMargin(R.id.layoutBlock2, ConstraintSet.START, 0)
        }
        constraintSet.applyTo(parentLayout)

        // note : we have to COMPARE numbers that are FRACTIONS. And everyone knows that we should NEVER compare DOUBLES because of the imprecision at the end.
        // So instead, I multiply the result by 100 (to give 2 significant numbers), and do an INTEGER DIVISION. This is the right way to compare ratios.
        nowPlayingViewModel.screenRatio = if (viewWidth > 0)
                (viewHeight*100)/viewWidth
        else
            100
        Log.d(tag, "orientation set")
    }

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

    private fun syncPlayPauseButtonImage(v: View)
    {
        val img = v.findViewById<ImageButton>(R.id.play_pause)

        if (PlayerStore.instance.playbackState.value == PlaybackStateCompat.STATE_STOPPED) {
            img.setImageResource(R.drawable.exo_controls_play)
        } else {
            img.setImageResource(R.drawable.exo_controls_pause)
        }
    }
}