package space.siy.waveformviewdemo

import android.media.MediaPlayer
import android.os.Bundle
import android.os.Handler
import android.support.v7.app.AppCompatActivity
import android.view.View
import android.widget.SeekBar
import kotlinx.android.synthetic.main.activity_main.*
import space.siy.waveformview.WaveFormData
import space.siy.waveformview.WaveFormView

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        //Open From Assets Folder
        val afd = assets.openFd("jazz_in_paris.mp3")

        //Build WaveFormData
        WaveFormData.Factory(afd.fileDescriptor, afd.startOffset, afd.length)
                .build(object : WaveFormData.Factory.Callback {
                    //When Complete, you can receive data and set to the view
                    override fun onComplete(waveFormData: WaveFormData) {
                        progressBar.visibility = View.GONE

                        waveFormView.data = waveFormData


                        //UI setup
                        seekBar1.progress = (waveFormView.secPerBlock*100f).toInt()
                        seekBar2.progress = (waveFormView.blockWidth).toInt()
                        seekBar3.progress = (waveFormView.topBlockScale*100f).toInt()
                        seekBar4.progress = (waveFormView.bottomBlockScale*100f).toInt()

                        seekBar1.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener{
                            override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
                                waveFormView.secPerBlock = seekBar.progress / 100f
                            }
                            override fun onStartTrackingTouch(seekBar: SeekBar) {}
                            override fun onStopTrackingTouch(seekBar: SeekBar) {}
                        })
                        seekBar2.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener{
                            override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
                                waveFormView.blockWidth = seekBar.progress.toFloat()
                            }
                            override fun onStartTrackingTouch(seekBar: SeekBar) {}
                            override fun onStopTrackingTouch(seekBar: SeekBar) {}
                        })
                        seekBar3.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener{
                            override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
                                waveFormView.topBlockScale = seekBar.progress / 100f
                            }
                            override fun onStartTrackingTouch(seekBar: SeekBar) {}
                            override fun onStopTrackingTouch(seekBar: SeekBar) {}
                        })
                        seekBar4.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener{
                            override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
                                waveFormView.bottomBlockScale = seekBar.progress / 100f
                            }
                            override fun onStartTrackingTouch(seekBar: SeekBar) {}
                            override fun onStopTrackingTouch(seekBar: SeekBar) {}
                        })

                        //Initialize MediaPlayer
                        val player = MediaPlayer()
                        player.setDataSource(afd.fileDescriptor, afd.startOffset, afd.length)
                        player.prepare()
                        player.start()

                        //Synchronize with MediaPlayer using WaveFormView.Callback
                        waveFormView.callback = object : WaveFormView.Callback {
                            override fun onPlayPause() {
                                if (player.isPlaying)
                                    player.pause()
                                else
                                    player.start()
                            }
                            override fun onSeek(pos: Long) {
                                player.seekTo(pos.toInt())
                            }
                        }

                        //You have to notify current position to the view
                        Handler().postDelayed(object : Runnable {
                            override fun run() {
                                waveFormView.position = player.currentPosition.toLong()
                                Handler().postDelayed(this, 20)
                            }
                        }, 20)

                    }

                    override fun onProgress(progress: Float) {
                        progressBar.progress = (progress*10).toInt()
                    }
                })
    }

}