/*
 * Copyright (C) 2015 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.example.leakcanary

import android.animation.ObjectAnimator
import android.animation.ValueAnimator
import android.app.Activity
import android.app.AlertDialog
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.os.Build
import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.os.SystemClock
import android.view.View
import android.widget.Button
import java.util.concurrent.atomic.AtomicReference
import kotlin.concurrent.thread
import kotlin.random.Random
import leakcanary.AppWatcher

class MainActivity : Activity() {

  private var leakyReceiver = false

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

    val app = application as ExampleApplication
    findViewById<Button>(R.id.recreate_activity_button).setOnClickListener { recreate() }
    findViewById<Button>(R.id.leak_activity_button).setOnClickListener {
      val leakedView = findViewById<View>(R.id.helper_text)
      when (Random.nextInt(4)) {
        // Leak from application class
        0 -> app.leakedViews.add(leakedView)
        // Leak from Kotlin object singleton
        1 -> LeakingSingleton.leakedViews.add(leakedView)
        2 -> {
          // Leak from local variable on thread
          val ref = AtomicReference(this)
          thread(name = "Leaking local variables") {
            val activity = ref.get()
            ref.set(null)
            while (true) {
              print(activity)
              SystemClock.sleep(1000)
            }
          }
        }
        // Leak from thread fields
        else -> LeakingThread.thread.leakedViews.add(leakedView)
      }
    }
    findViewById<Button>(R.id.show_dialog_button).setOnClickListener {
      AlertDialog.Builder(this)
        .setTitle("Leaky dialog")
        .setPositiveButton("Dismiss and leak dialog") { dialog, _ ->
          app.leakedDialogs += dialog as AlertDialog
        }
        .show()
    }
    findViewById<Button>(R.id.start_service_button).setOnClickListener {
      startService(Intent(this, LeakingService::class.java))
    }
    findViewById<Button>(R.id.leak_receiver_button).setOnClickListener {
      leakyReceiver = true
      recreate()
    }
    findViewById<Button>(R.id.message_leak_button).setOnClickListener {
      val leaky = Any()
      AppWatcher.objectWatcher.expectWeaklyReachable(leaky, "Repeated Message")
      @Suppress("unused")
      class LeakyReschedulingRunnable(private val leaky: Any) : Runnable {
        private val handler = Handler(Looper.getMainLooper())
        override fun run() {
          handler.postDelayed(this, 1000)
        }
      }
      LeakyReschedulingRunnable(leaky).run()
    }
    findViewById<Button>(R.id.infinite_animator).setOnClickListener { view ->
      ObjectAnimator.ofFloat(view, View.ALPHA, 0.1f, 0.2f).apply {
        duration = 100
        repeatMode = ValueAnimator.REVERSE
        repeatCount = ValueAnimator.INFINITE
        start()
      }
    }
    findViewById<Button>(R.id.finish_activity).setOnClickListener { view ->
      finish()
    }
  }

  class NoOpBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(
      context: Context,
      intent: Intent
    ) = Unit
  }

  override fun onDestroy() {
    super.onDestroy()
    if (leakyReceiver) {
      Handler().postDelayed({
        if (Build.VERSION.SDK_INT >= 33) {
          val flags = Context.RECEIVER_EXPORTED
          application.registerReceiver(NoOpBroadcastReceiver(), IntentFilter(), flags)
        } else {
          application.registerReceiver(NoOpBroadcastReceiver(), IntentFilter())
        }
      }, 500)
    }
  }
}