PlayerAndroid/app/src/main/java/code/name/monkey/retromusic/activities/base/AbsSlidingMusicPanelActivity.kt

package code.name.monkey.retromusic.activities.base

import android.animation.ValueAnimator
import android.annotation.SuppressLint
import android.graphics.Color
import android.graphics.Rect
import android.os.Bundle
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import android.view.ViewTreeObserver
import androidx.annotation.LayoutRes
import androidx.fragment.app.Fragment
import code.name.monkey.appthemehelper.util.ATHUtil
import code.name.monkey.appthemehelper.util.ColorUtil
import code.name.monkey.retromusic.R
import code.name.monkey.retromusic.extensions.hide
import code.name.monkey.retromusic.extensions.show
import code.name.monkey.retromusic.fragments.MiniPlayerFragment
import code.name.monkey.retromusic.fragments.NowPlayingScreen
import code.name.monkey.retromusic.fragments.NowPlayingScreen.*
import code.name.monkey.retromusic.fragments.base.AbsPlayerFragment
import code.name.monkey.retromusic.fragments.player.adaptive.AdaptiveFragment
import code.name.monkey.retromusic.fragments.player.blur.BlurPlayerFragment
import code.name.monkey.retromusic.fragments.player.card.CardFragment
import code.name.monkey.retromusic.fragments.player.cardblur.CardBlurFragment
import code.name.monkey.retromusic.fragments.player.color.ColorFragment
import code.name.monkey.retromusic.fragments.player.fit.FitFragment
import code.name.monkey.retromusic.fragments.player.flat.FlatPlayerFragment
import code.name.monkey.retromusic.fragments.player.full.FullPlayerFragment
import code.name.monkey.retromusic.fragments.player.material.MaterialFragment
import code.name.monkey.retromusic.fragments.player.normal.PlayerFragment
import code.name.monkey.retromusic.fragments.player.peak.PeakPlayerFragment
import code.name.monkey.retromusic.fragments.player.plain.PlainPlayerFragment
import code.name.monkey.retromusic.fragments.player.simple.SimplePlayerFragment
import code.name.monkey.retromusic.fragments.player.tiny.TinyPlayerFragment
import code.name.monkey.retromusic.helper.MusicPlayerRemote
import code.name.monkey.retromusic.util.DensityUtil
import code.name.monkey.retromusic.util.PreferenceUtil
import code.name.monkey.retromusic.views.BottomNavigationBarTinted
import com.google.android.material.bottomsheet.BottomSheetBehavior
import com.google.android.material.card.MaterialCardView
import kotlinx.android.synthetic.main.sliding_music_panel_layout.*

abstract class AbsSlidingMusicPanelActivity : AbsMusicServiceActivity(), AbsPlayerFragment.Callbacks {
    companion object {
        val TAG: String = AbsSlidingMusicPanelActivity::class.java.simpleName
    }

    private lateinit var bottomSheetBehavior: BottomSheetBehavior<MaterialCardView>
    private var miniPlayerFragment: MiniPlayerFragment? = null
    private var playerFragment: AbsPlayerFragment? = null
    private var currentNowPlayingScreen: NowPlayingScreen? = null
    private var navigationBarColor: Int = 0
    private var taskColor: Int = 0
    private var lightStatusBar: Boolean = false
    private var lightNavigationBar: Boolean = false
    private var navigationBarColorAnimator: ValueAnimator? = null
    protected abstract fun createContentView(): View
    private val panelState: Int
        get() = bottomSheetBehavior.state

    private val bottomSheetCallbackList = object : BottomSheetBehavior.BottomSheetCallback() {

        override fun onSlide(bottomSheet: View, slideOffset: Float) {
            setMiniPlayerAlphaProgress(slideOffset)
            dimBackground.show()
            dimBackground.alpha = slideOffset
        }

        override fun onStateChanged(bottomSheet: View, newState: Int) {
            when (newState) {
                BottomSheetBehavior.STATE_EXPANDED -> {
                    onPanelExpanded()
                }
                BottomSheetBehavior.STATE_COLLAPSED -> {
                    onPanelCollapsed()
                    dimBackground.hide()
                }
                else -> {

                }
            }
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(createContentView())

        chooseFragmentForTheme()
        setupSlidingUpPanel()

        updateTabs()

        bottomSheetBehavior = BottomSheetBehavior.from(slidingPanel)

        val themeColor = ATHUtil.resolveColor(this, android.R.attr.windowBackground, Color.GRAY)
        dimBackground.setBackgroundColor(ColorUtil.withAlpha(themeColor, 0.5f))
    }

    override fun onResume() {
        super.onResume()
        if (currentNowPlayingScreen != PreferenceUtil.getInstance(this).nowPlayingScreen) {
            postRecreate()
        }
        bottomSheetBehavior.addBottomSheetCallback(bottomSheetCallbackList)

        if (bottomSheetBehavior.state == BottomSheetBehavior.STATE_EXPANDED) {
            setMiniPlayerAlphaProgress(1f)
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        bottomSheetBehavior.removeBottomSheetCallback(bottomSheetCallbackList)
        if (navigationBarColorAnimator != null) navigationBarColorAnimator!!.cancel() // just in case
    }

    protected fun wrapSlidingMusicPanel(@LayoutRes resId: Int): View {
        @SuppressLint("InflateParams") val slidingMusicPanelLayout = layoutInflater.inflate(
                R.layout.sliding_music_panel_layout, null
        )
        val contentContainer = slidingMusicPanelLayout.findViewById<ViewGroup>(R.id.mainContentFrame)
        layoutInflater.inflate(resId, contentContainer)
        return slidingMusicPanelLayout
    }

    private fun collapsePanel() {
        bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
    }

    fun expandPanel() {
        bottomSheetBehavior.state = BottomSheetBehavior.STATE_EXPANDED
        setMiniPlayerAlphaProgress(1f)
    }

    private fun setMiniPlayerAlphaProgress(progress: Float) {
        if (miniPlayerFragment?.view == null) return
        val alpha = 1 - progress
        miniPlayerFragment?.view?.alpha = alpha
        // necessary to make the views below clickable
        miniPlayerFragment?.view?.visibility = if (alpha == 0f) View.GONE else View.VISIBLE

        bottomNavigationView.translationY = progress * 500
        bottomNavigationView.alpha = alpha
    }

    open fun onPanelCollapsed() {
        // restore values
        super.setLightStatusbar(lightStatusBar)
        super.setTaskDescriptionColor(taskColor)
        super.setNavigationbarColor(navigationBarColor)
        super.setLightNavigationBar(lightNavigationBar)


        playerFragment?.setMenuVisibility(false)
        playerFragment?.userVisibleHint = false
        playerFragment?.onHide()
    }

    open fun onPanelExpanded() {
        val playerFragmentColor = playerFragment!!.paletteColor
        super.setTaskDescriptionColor(playerFragmentColor)

        playerFragment?.setMenuVisibility(true)
        playerFragment?.userVisibleHint = true
        playerFragment?.onShow()
        onPaletteColorChanged()
    }

    private fun setupSlidingUpPanel() {
        slidingPanel.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
            override fun onGlobalLayout() {
                slidingPanel.viewTreeObserver.removeOnGlobalLayoutListener(this)
                if (currentNowPlayingScreen != PEAK) {
                    val params = slidingPanel.layoutParams as ViewGroup.LayoutParams
                    params.height = ViewGroup.LayoutParams.MATCH_PARENT
                    slidingPanel.layoutParams = params
                }
                when (panelState) {
                    BottomSheetBehavior.STATE_EXPANDED -> onPanelExpanded()
                    BottomSheetBehavior.STATE_COLLAPSED -> onPanelCollapsed()
                    else -> playerFragment!!.onHide()
                }
            }
        })
    }

    fun toggleBottomNavigationView(toggle: Boolean) {
        bottomNavigationView.visibility = if (toggle) View.GONE else View.VISIBLE
    }

    fun getBottomNavigationView(): BottomNavigationBarTinted {
        return bottomNavigationView
    }

    private fun hideBottomBar(hide: Boolean) {
        val heightOfBar = resources.getDimensionPixelSize(R.dimen.mini_player_height)
        val heightOfBarWithTabs = resources.getDimensionPixelSize(R.dimen.mini_player_height_expanded)

        if (hide) {
            bottomSheetBehavior.isHideable = true
            bottomSheetBehavior.peekHeight = 0
            collapsePanel()
            bottomNavigationView.elevation = DensityUtil.dip2px(this, 10f).toFloat()
        } else {
            if (MusicPlayerRemote.playingQueue.isNotEmpty()) {
                slidingPanel.cardElevation = DensityUtil.dip2px(this, 10f).toFloat()
                bottomNavigationView.elevation = DensityUtil.dip2px(this, 10f).toFloat()
                bottomSheetBehavior.isHideable = false
                bottomSheetBehavior.peekHeight = if (bottomNavigationView.visibility == View.VISIBLE) heightOfBarWithTabs else heightOfBar
            }
        }
    }

    fun setBottomBarVisibility(gone: Int) {
        bottomNavigationView.visibility = gone
        hideBottomBar(false)
    }

    private fun chooseFragmentForTheme() {
        currentNowPlayingScreen = PreferenceUtil.getInstance(this).nowPlayingScreen

        val fragment: Fragment = when (currentNowPlayingScreen) {
            BLUR -> BlurPlayerFragment()
            ADAPTIVE -> AdaptiveFragment()
            NORMAL -> PlayerFragment()
            CARD -> CardFragment()
            BLUR_CARD -> CardBlurFragment()
            FIT -> FitFragment()
            FLAT -> FlatPlayerFragment()
            FULL -> FullPlayerFragment()
            PLAIN -> PlainPlayerFragment()
            SIMPLE -> SimplePlayerFragment()
            MATERIAL -> MaterialFragment()
            COLOR -> ColorFragment()
            TINY -> TinyPlayerFragment()
            PEAK -> PeakPlayerFragment()
            else -> PlayerFragment()
        } // must implement AbsPlayerFragment
        supportFragmentManager.beginTransaction().replace(R.id.playerFragmentContainer, fragment)
                .commit()
        supportFragmentManager.executePendingTransactions()

        playerFragment = supportFragmentManager.findFragmentById(R.id.playerFragmentContainer) as AbsPlayerFragment
        miniPlayerFragment = supportFragmentManager.findFragmentById(R.id.miniPlayerFragment) as MiniPlayerFragment
        miniPlayerFragment?.view?.setOnClickListener { expandPanel() }
    }

    override fun onServiceConnected() {
        super.onServiceConnected()
        if (MusicPlayerRemote.playingQueue.isNotEmpty()) {
            slidingPanel.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
                override fun onGlobalLayout() {
                    slidingPanel.viewTreeObserver.removeOnGlobalLayoutListener(this)
                    hideBottomBar(false)
                }
            })
        } // don't call hideBottomBar(true) here as it causes a bug with the SlidingUpPanelLayout
    }

    override fun onQueueChanged() {
        super.onQueueChanged()
        hideBottomBar(MusicPlayerRemote.playingQueue.isEmpty())
    }

    override fun onBackPressed() {
        if (!handleBackPress()) super.onBackPressed()
    }

    open fun handleBackPress(): Boolean {
        if (bottomSheetBehavior.peekHeight != 0 && playerFragment!!.onBackPressed()) return true
        if (panelState == BottomSheetBehavior.STATE_EXPANDED) {
            collapsePanel()
            return true
        }
        return false
    }

    override fun onPaletteColorChanged() {
        if (panelState == BottomSheetBehavior.STATE_EXPANDED) {
            val paletteColor = playerFragment!!.paletteColor
            super.setTaskDescriptionColor(paletteColor)

            val isColorLight = ColorUtil.isColorLight(paletteColor)

            if (PreferenceUtil.getInstance(this).adaptiveColor && (currentNowPlayingScreen == NORMAL || currentNowPlayingScreen == FLAT)) {
                super.setLightNavigationBar(true)
                super.setLightStatusbar(isColorLight)
            } else if (currentNowPlayingScreen == FULL || currentNowPlayingScreen == CARD || currentNowPlayingScreen == FIT || currentNowPlayingScreen == BLUR || currentNowPlayingScreen == BLUR_CARD) {
                super.setLightStatusbar(false)
                super.setLightNavigationBar(true)
            } else if (currentNowPlayingScreen == COLOR || currentNowPlayingScreen == TINY) {
                super.setNavigationbarColor(paletteColor)
                super.setLightNavigationBar(isColorLight)
                super.setLightStatusbar(isColorLight)
            } else {
                super.setLightStatusbar(
                        ColorUtil.isColorLight(
                                ATHUtil.resolveColor(
                                        this, R.attr.colorPrimary
                                )
                        )
                )
                super.setLightNavigationBar(true)
            }
        }
    }

    override fun setLightStatusbar(enabled: Boolean) {
        lightStatusBar = enabled
        if (panelState == BottomSheetBehavior.STATE_COLLAPSED) {
            super.setLightStatusbar(enabled)
        }
    }

    override fun setLightNavigationBar(enabled: Boolean) {
        lightNavigationBar = enabled
        if (panelState == BottomSheetBehavior.STATE_COLLAPSED) {
            super.setLightNavigationBar(enabled)
        }
    }

    override fun setNavigationbarColor(color: Int) {
        navigationBarColor = color
        if (panelState == BottomSheetBehavior.STATE_COLLAPSED) {
            if (navigationBarColorAnimator != null) navigationBarColorAnimator!!.cancel()
            super.setNavigationbarColor(color)
        }
    }

    override fun setTaskDescriptionColor(color: Int) {
        taskColor = color
        if (panelState == BottomSheetBehavior.STATE_COLLAPSED) {
            super.setTaskDescriptionColor(color)
        }
    }

    private fun updateTabs() {
        bottomNavigationView.menu.clear()
        val currentTabs = PreferenceUtil.getInstance(this).libraryCategoryInfos
        for (tab in currentTabs) {
            if (tab.visible) {
                val menu = tab.category
                bottomNavigationView.menu.add(
                        0, menu.id, 0, menu.stringRes
                ).setIcon(menu.icon)
            }
        }
    }

    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
        if (ev?.action == MotionEvent.ACTION_DOWN) {
            if (panelState == BottomSheetBehavior.STATE_EXPANDED) {
                val outRect = Rect()
                slidingPanel.getGlobalVisibleRect(outRect)
                if (!outRect.contains(ev.rawX.toInt(), ev.rawY.toInt())) {
                    bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
                }
            }
        }
        return super.dispatchTouchEvent(ev)
    }
}