package com.xxxx.xxx.utils
import android.app.Activity
import android.app.Application
import android.os.Bundle
import android.os.Looper
import android.os.Process
import android.widget.Toast
import kotlinx.coroutines.*
class CrashHandler private constructor() : Thread.UncaughtExceptionHandler,
    Application.ActivityLifecycleCallbacks {

    private lateinit var context: Application
    private val activityList = arrayListOf<Activity>()

    companion object {
        val instance: CrashHandler by lazy(
            mode = LazyThreadSafetyMode.SYNCHRONIZED
        ) { CrashHandler() }
    }

    fun init(context: Application): CrashHandler {
        this.context = context
        context.registerActivityLifecycleCallbacks(this)
        Thread.setDefaultUncaughtExceptionHandler(this)
        return this
    }

    override fun uncaughtException(thread: Thread, throwable: Throwable) {

        try {
            GlobalScope.launch(context = Dispatchers.Default) {
                withContext(Dispatchers.Default) {
                    //TODO　report the crash to Your 3rd Party or own Server.

                    //save what you need to savings
                    if (SharedPreferences.getCrashRestartCount < 2)
                        //TODO: saveInfo()
                }
                if (thread == Looper.getMainLooper().thread) {
                    //when a crash happened on the main thread show a short toast to the user
                    withContext(context = Dispatchers.Default) {
                        Looper.prepare()
                        Toast.makeText(
                            context, "crash occured,please try later",
                            Toast.LENGTH_SHORT
                        ).show()
                        Looper.loop()
                    }
                } else {
                    //when a crash happened on the child thread not block the UI thread, so can show a dialog to the user
                    withContext(context = Dispatchers.Main) {
                        //TODO: showAlertDialog()
                    }
                }
            }
            if (thread == Looper.getMainLooper().thread) {
                //let the main thread sleep 2s to show a short toast to the user
                Thread.sleep(2000)
                restartApp()
            }
        } catch (e: Exception) {

        }
    }

    private fun restartApp() {
        context.startActivity(
            context.packageManager.getLaunchIntentForPackage(
                context.packageName
            )
        )
        Process.killProcess(Process.myPid())
    }

    override fun onActivityCreated(p0: Activity, p1: Bundle?) {
        activityList.add(p0)
    }

    override fun onActivityStarted(p0: Activity) {

    }

    override fun onActivityResumed(p0: Activity) {

    }

    override fun onActivityPaused(p0: Activity) {

    }

    override fun onActivityStopped(p0: Activity) {

    }

    override fun onActivitySaveInstanceState(p0: Activity, p1: Bundle) {

    }

    override fun onActivityDestroyed(p0: Activity) {
        activityList.remove(p0)
    }
}

-----------------------------End-----------------------------