package com.xraph.plugin.flutter_unity_widget

import android.annotation.SuppressLint
import android.app.Activity
import android.app.Application
import android.os.Bundle
import android.util.Log
import androidx.annotation.NonNull
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.LifecycleRegistry

import io.flutter.embedding.engine.plugins.FlutterPlugin
import io.flutter.embedding.engine.plugins.FlutterPlugin.FlutterPluginBinding
import io.flutter.embedding.engine.plugins.activity.ActivityAware
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
import io.flutter.embedding.engine.plugins.lifecycle.FlutterLifecycleAdapter

/** FlutterUnityWidgetPlugin */
class FlutterUnityWidgetPlugin : FlutterPlugin, ActivityAware {
    private var lifecycle: Lifecycle? = null
    private var flutterPluginBinding: FlutterPluginBinding? = null

    override fun onAttachedToEngine(@NonNull binding: FlutterPluginBinding) {
        Log.d(LOG_TAG, "onAttachedToEngine")
        flutterPluginBinding = binding
        binding
                .platformViewRegistry
                .registerViewFactory(
                        VIEW_TYPE,
                        FlutterUnityWidgetFactory(
                                binding.binaryMessenger,
                                object : LifecycleProvider {
                                    override fun getLifecycle(): Lifecycle {
                                        return lifecycle!!
                                    }
                                }))
    }

    override fun onDetachedFromEngine(@NonNull binding: FlutterPluginBinding) {
        Log.d(LOG_TAG, "onDetachedFromEngine")
        flutterPluginBinding = null
    }

    companion object {
        internal const val LOG_TAG = "FUWPlugin"
        private const val VIEW_TYPE = "plugin.xraph.com/unity_view"
    }

    @SuppressLint("LongLogTag")
    override fun onAttachedToActivity(binding: ActivityPluginBinding) {
        Log.d(LOG_TAG, "onAttachedToActivity")
        handleActivityChange(binding.activity)
        lifecycle = FlutterLifecycleAdapter.getActivityLifecycle(binding)
    }

    override fun onDetachedFromActivityForConfigChanges() {
        Log.d(LOG_TAG, "onDetachedFromActivityForConfigChanges")
        onDetachedFromActivity()
    }

    override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {
        Log.d(LOG_TAG, "onReattachedToActivityForConfigChanges")
        onAttachedToActivity(binding)
    }

    override fun onDetachedFromActivity() {
        Log.d(LOG_TAG, "onDetachedFromActivity")
        handleActivityChange(null)
        lifecycle = null
    }

    /**
     *
     */
    private fun handleActivityChange(activity: Activity?) {
        Log.d(LOG_TAG, "handleActivityChange")
        if (activity != null) {
            UnityPlayerUtils.prevActivityRequestedOrientation = activity.requestedOrientation
            UnityPlayerUtils.activity = activity
            return
        }

        UnityPlayerUtils.activity = null
        UnityPlayerUtils.reset()
        UnityPlayerUtils.quitPlayer()
    }

    /**
     * [August 2024 UPDATE] This unused class was disabled to fix compilation errors in Flutter 3.24.
     *
     * This class provides a {@link LifecycleOwner} for the activity driven by {@link
     * ActivityLifecycleCallbacks}.
     *
     * <p>This is used in the case where a direct Lifecycle/Owner is not available.
     */
//    @SuppressLint("NewApi")
//    private class ProxyLifecycleProvider(activity: Activity) : Application.ActivityLifecycleCallbacks, LifecycleOwner, LifecycleProvider {
//        private val lifecycle = LifecycleRegistry(this)
//        private var registrarActivityHashCode: Int = 0
//
//        init {
//            UnityPlayerUtils.activity = activity
//            this.registrarActivityHashCode = activity.hashCode()
//            activity.application.registerActivityLifecycleCallbacks(this)
//        }
//
//        override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_CREATE)
//        }
//
//        override fun onActivityStarted(activity: Activity) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_START)
//        }
//
//        override fun onActivityResumed(activity: Activity) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_RESUME)
//        }
//
//        override fun onActivityPaused(activity: Activity) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_PAUSE)
//        }
//
//        override fun onActivityStopped(activity: Activity) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_STOP)
//        }
//
//        override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
//            UnityPlayerUtils.activity = activity
//        }
//
//        override fun onActivityDestroyed(activity: Activity) {
//            UnityPlayerUtils.activity = activity
//            if (activity.hashCode() != registrarActivityHashCode) {
//                return
//            }
//
//            activity.application.unregisterActivityLifecycleCallbacks(this)
//            lifecycle.handleLifecycleEvent(Lifecycle.Event.ON_DESTROY)
//        }
//
//        override fun getLifecycle(): Lifecycle {
//            return lifecycle
//        }
//    }
}