my-tv/app/src/main/java/com/lizongying/mytv/MainActivity.kt

package com.lizongying.mytv

import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.util.Log
import android.view.GestureDetector
import android.view.KeyEvent
import android.view.MotionEvent
import android.view.View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
import android.view.WindowManager
import android.widget.Toast
import androidx.fragment.app.FragmentActivity
import com.lizongying.mytv.models.TVViewModel


class MainActivity : FragmentActivity(), Request.RequestListener {

    private var ready = 0
    private val playerFragment = PlayerFragment()
    private val mainFragment = MainFragment()
    private val infoFragment = InfoFragment()
    private val channelFragment = ChannelFragment()
    private val settingFragment = SettingFragment()

    private var doubleBackToExitPressedOnce = false

    private lateinit var gestureDetector: GestureDetector

    private val handler = Handler()
    private val delayHideMain: Long = 10000
    private val delayHideSetting: Long = 10000

    override fun onCreate(savedInstanceState: Bundle?) {
        Log.i(TAG, "onCreate")
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        Request.onCreate()
        Request.setRequestListener(this)

        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
        window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN)
        window.decorView.systemUiVisibility = SYSTEM_UI_FLAG_HIDE_NAVIGATION

        if (savedInstanceState == null) {
            supportFragmentManager.beginTransaction()
                .add(R.id.main_browse_fragment, playerFragment)
                .add(R.id.main_browse_fragment, infoFragment)
                .add(R.id.main_browse_fragment, channelFragment)
                .add(R.id.main_browse_fragment, mainFragment)
                .hide(mainFragment)
                .commit()
        }
        gestureDetector = GestureDetector(this, GestureListener())
    }

    fun showInfoFragment(tvViewModel: TVViewModel) {
        infoFragment.show(tvViewModel)
        if (SP.channelNum) {
            channelFragment.show(tvViewModel)
        }
    }

    private fun showChannel(channel: String) {
        if (!mainFragment.isHidden) {
            return
        }

        if (settingFragment.isVisible) {
            return
        }

        if (SP.channelNum) {
            channelFragment.show(channel)
        }
    }

    fun play(tvViewModel: TVViewModel) {
        playerFragment.play(tvViewModel)
        mainFragment.view?.requestFocus()
    }

    fun play(itemPosition: Int) {
        mainFragment.play(itemPosition)
    }

    fun prev() {
        mainFragment.prev()
    }

    fun next() {
        mainFragment.next()
    }

    private fun prevSource() {
//        mainFragment.prevSource()
    }

    private fun nextSource() {
//        mainFragment.nextSource()
    }

    fun switchMainFragment() {
        val transaction = supportFragmentManager.beginTransaction()

        if (mainFragment.isHidden) {
            mainFragment.setPosition()
            transaction.show(mainFragment)
            mainActive()
        } else {
            transaction.hide(mainFragment)
        }

        transaction.commit()
    }

    fun mainActive() {
        handler.removeCallbacks(hideMain)
        handler.postDelayed(hideMain, delayHideMain)
    }

    fun settingActive() {
        handler.removeCallbacks(hideSetting)
        handler.postDelayed(hideSetting, delayHideSetting)
    }

    private val hideMain = Runnable {
        if (!mainFragment.isHidden) {
            supportFragmentManager.beginTransaction().hide(mainFragment).commit()
        }
    }

    private fun mainFragmentIsHidden(): Boolean {
        return mainFragment.isHidden
    }

    private fun hideMainFragment() {
        if (!mainFragment.isHidden) {
            supportFragmentManager.beginTransaction()
                .hide(mainFragment)
                .commit()
        }
    }

    fun fragmentReady() {
        ready++
        Log.i(TAG, "ready $ready")
        if (ready == 5) {
            mainFragment.fragmentReady()
        }
    }

    override fun onTouchEvent(event: MotionEvent?): Boolean {
        if (event != null) {
            gestureDetector.onTouchEvent(event)
        }
        return super.onTouchEvent(event)
    }

    private inner class GestureListener : GestureDetector.SimpleOnGestureListener() {

        override fun onSingleTapConfirmed(e: MotionEvent): Boolean {
            Log.i(TAG, "onSingleTapConfirmed")
            switchMainFragment()
            return true
        }

        override fun onFling(
            e1: MotionEvent?,
            e2: MotionEvent,
            velocityX: Float,
            velocityY: Float
        ): Boolean {
            if (velocityY > 0) {
                if (mainFragment.isHidden) {
                    prev()
                } else {
//                    if (mainFragment.selectedPosition == 0) {
//                        mainFragment.setSelectedPosition(
//                            mainFragment.tvListViewModel.maxNum.size - 1,
//                            false
//                        )
//                    }
                }
            }
            if (velocityY < 0) {
                if (mainFragment.isHidden) {
                    next()
                } else {
//                    if (mainFragment.selectedPosition == mainFragment.tvListViewModel.maxNum.size - 1) {
////                        mainFragment.setSelectedPosition(0, false)
//                        hideMainFragment()
//                        return false
//                    }
                }
            }
            return super.onFling(e1, e2, velocityX, velocityY)
        }
    }

    private fun showSetting() {
        if (!mainFragment.isHidden) {
            return
        }

        Log.i(TAG, "settingFragment ${settingFragment.isVisible}")
        if (!settingFragment.isVisible) {
            settingFragment.show(supportFragmentManager, "setting")
            settingActive()
        } else {
            handler.removeCallbacks(hideSetting)
            settingFragment.dismiss()
        }
    }

    private val hideSetting = Runnable {
        if (settingFragment.isVisible) {
            settingFragment.dismiss()
        }
    }

    private fun channelUp() {
        if (mainFragment.isHidden) {
            if (SP.channelReversal) {
                next()
                return
            }
            prev()
        } else {
//                    if (mainFragment.selectedPosition == 0) {
//                        mainFragment.setSelectedPosition(
//                            mainFragment.tvListViewModel.maxNum.size - 1,
//                            false
//                        )
//                    }
        }
    }

    private fun channelDown() {
        if (mainFragment.isHidden) {
            if (SP.channelReversal) {
                prev()
                return
            }
            next()
        } else {
//                    if (mainFragment.selectedPosition == mainFragment.tvListViewModel.maxNum.size - 1) {
////                        mainFragment.setSelectedPosition(0, false)
//                        hideMainFragment()
//                        return false
//                    }
        }
    }

    private fun back() {
        if (!mainFragmentIsHidden()) {
            hideMainFragment()
            return
        }

        if (doubleBackToExitPressedOnce) {
            super.onBackPressed()
            return
        }

        doubleBackToExitPressedOnce = true
        Toast.makeText(this, "再按一次退出", Toast.LENGTH_SHORT).show()

        Handler(Looper.getMainLooper()).postDelayed({
            doubleBackToExitPressedOnce = false
        }, 2000)
    }


    fun onKey(keyCode: Int): Boolean {
        Log.i(TAG, "keyCode $keyCode")
        when (keyCode) {
            KeyEvent.KEYCODE_0 -> {
                showChannel("0")
                return true
            }

            KeyEvent.KEYCODE_1 -> {
                showChannel("1")
                return true
            }

            KeyEvent.KEYCODE_2 -> {
                showChannel("2")
                return true
            }

            KeyEvent.KEYCODE_3 -> {
                showChannel("3")
                return true
            }

            KeyEvent.KEYCODE_4 -> {
                showChannel("4")
                return true
            }

            KeyEvent.KEYCODE_5 -> {
                showChannel("5")
                return true
            }

            KeyEvent.KEYCODE_6 -> {
                showChannel("6")
                return true
            }

            KeyEvent.KEYCODE_7 -> {
                showChannel("7")
                return true
            }

            KeyEvent.KEYCODE_8 -> {
                showChannel("8")
                return true
            }

            KeyEvent.KEYCODE_9 -> {
                showChannel("9")
                return true
            }

            KeyEvent.KEYCODE_ESCAPE -> {
                back()
                return true
            }

            KeyEvent.KEYCODE_BACK -> {
                back()
                return true
            }

            KeyEvent.KEYCODE_BOOKMARK -> {
                showSetting()
                return true
            }

            KeyEvent.KEYCODE_UNKNOWN -> {
                showSetting()
                return true
            }

            KeyEvent.KEYCODE_HELP -> {
                showSetting()
                return true
            }

            KeyEvent.KEYCODE_SETTINGS -> {
                showSetting()
                return true
            }

            KeyEvent.KEYCODE_MENU -> {
                showSetting()
                return true
            }

            KeyEvent.KEYCODE_ENTER -> {
                switchMainFragment()
            }

            KeyEvent.KEYCODE_DPAD_CENTER -> {
                switchMainFragment()
            }

            KeyEvent.KEYCODE_DPAD_UP -> {
                channelUp()
            }

            KeyEvent.KEYCODE_CHANNEL_UP -> {
                channelUp()
            }

            KeyEvent.KEYCODE_DPAD_DOWN -> {
                channelDown()
            }

            KeyEvent.KEYCODE_CHANNEL_DOWN -> {
                channelDown()
            }

            KeyEvent.KEYCODE_DPAD_LEFT -> {
                channelUp()
//                if (mainFragment.isHidden) {
//                    prevSource()
//                } else {
////                    if (mainFragment.tvListViewModel.getTVViewModelCurrent()
////                            ?.getItemPosition() == 0
////                    ) {
//////                        mainFragment.toLastPosition()
////                        hideMainFragment()
////                    }
//                }
            }

            KeyEvent.KEYCODE_DPAD_RIGHT -> {
                channelDown()
//                if (mainFragment.isHidden) {
//                    nextSource()
//                } else {
////                    if (mainFragment.tvListViewModel.getTVViewModelCurrent()
////                            ?.getItemPosition() == mainFragment.tvListViewModel.maxNum[mainFragment.selectedPosition] - 1
////                    ) {
////                        mainFragment.toFirstPosition()
////                    }
//                }
            }
        }
        return false
    }

    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
        if (onKey(keyCode)) {
            return true
        }

        return super.onKeyDown(keyCode, event)
    }

    private fun getAppSignature() = this.appSignature

    override fun onStart() {
        Log.i(TAG, "onStart")
        super.onStart()
    }

    override fun onResume() {
        Log.i(TAG, "onResume")
        super.onResume()
        if (!mainFragment.isHidden) {
            handler.postDelayed(hideMain, delayHideMain)
        }
    }

    override fun onPause() {
        Log.i(TAG, "onPause")
        super.onPause()
        handler.removeCallbacks(hideMain)
    }

    override fun onDestroy() {
        super.onDestroy()
        Request.onDestroy()
    }

    override fun onRequestFinished() {
        fragmentReady()
    }

    private companion object {
        const val TAG = "MainActivity"
    }
}