package com.mapbox.mapboxsdk.testapp.activity.maplayout

import android.annotation.SuppressLint
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.support.v7.widget.LinearLayoutManager
import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.ViewGroup
import android.widget.TextView
import com.mapbox.mapboxsdk.maps.MapView
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback
import com.mapbox.mapboxsdk.maps.Style
import com.mapbox.mapboxsdk.testapp.R
import kotlinx.android.synthetic.main.activity_recyclerview.*

/**
 * TestActivity showcasing how to integrate a MapView in a RecyclerView.
 * <p>
 * It requires calling the correct lifecycle methods when detaching and attaching the View to
 * the RecyclerView with onViewAttachedToWindow and onViewDetachedFromWindow.
 * </p>
 */
@SuppressLint("ClickableViewAccessibility")
class RecyclerViewActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_recyclerview)
        recyclerView.layoutManager = LinearLayoutManager(this)
        recyclerView.adapter = ItemAdapter(LayoutInflater.from(this), savedInstanceState)
    }

    override fun onSaveInstanceState(outState: Bundle?) {
        super.onSaveInstanceState(outState)
        // to save state, we need to call MapView#onSaveInstanceState
        (recyclerView.adapter as ItemAdapter).onSaveInstanceState(outState)
    }

    override fun onLowMemory() {
        super.onLowMemory()
        // to release memory, we need to call MapView#onLowMemory
        (recyclerView.adapter as ItemAdapter).onLowMemory()
    }

    override fun onDestroy() {
        super.onDestroy()
        // to perform cleanup, we need to call MapView#onDestroy
        (recyclerView.adapter as ItemAdapter).onDestroy()
    }

    class ItemAdapter(private val inflater: LayoutInflater, val savedInstanceState: Bundle?) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

        private val items = listOf(
                "one", "two", "three", MapItem(), "four", "five", "six", "seven", "eight", "nine", "ten",
                "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen",
                "nineteen", "twenty", "twenty-one"
        )

        private var mapHolder: MapHolder? = null

        companion object {
            const val TYPE_MAP = 0
            const val TYPE_TEXT = 1
        }

        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
            return if (viewType == TYPE_MAP) {
                val mapView = inflater.inflate(R.layout.item_map, parent, false) as MapView
                mapView.getMapAsync { mapboxMap -> mapboxMap.setStyle(Style.MAPBOX_STREETS) }
                mapHolder = MapHolder(mapView, savedInstanceState)
                return mapHolder as MapHolder
            } else {
                TextHolder(inflater.inflate(android.R.layout.simple_list_item_1, parent, false) as TextView)
            }
        }

        override fun onViewAttachedToWindow(holder: RecyclerView.ViewHolder) {
            super.onViewAttachedToWindow(holder)
            if (holder is MapHolder) {
                val mapView = holder.mapView
                mapView.onStart()
                mapView.onResume()
            }
        }

        override fun onViewDetachedFromWindow(holder: RecyclerView.ViewHolder) {
            super.onViewDetachedFromWindow(holder)
            if (holder is MapHolder) {
                val mapView = holder.mapView
                mapView.onPause()
                mapView.onStop()
            }
        }

        override fun getItemCount(): Int {
            return items.count()
        }

        override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
            if (holder.itemViewType == TYPE_TEXT) {
                val textHolder = holder as TextHolder
                textHolder.bind(items[position] as String)
            }
        }

        override fun getItemViewType(position: Int): Int {
            return if (items[position] is MapItem) {
                TYPE_MAP
            } else {
                TYPE_TEXT
            }
        }

        fun onSaveInstanceState(savedInstanceState: Bundle?){
            savedInstanceState?.let {
                mapHolder?.mapView?.onSaveInstanceState(it)
            }
        }

        fun onLowMemory() {
            mapHolder?.mapView?.onLowMemory()
        }

        fun onDestroy() {
            mapHolder?.mapView?.let {
                it.onPause()
                it.onStop()
                it.onDestroy()
            }
        }

        class MapItem
        class MapHolder(val mapView: MapView, bundle: Bundle?) : RecyclerView.ViewHolder(mapView) {
            init {
                mapView.onCreate(bundle)
                mapView.setOnTouchListener { view, motionEvent ->
                    // Disallow the touch request for recyclerView scroll
                    view.parent.requestDisallowInterceptTouchEvent(true)
                    mapView.onTouchEvent(motionEvent)
                    true
                }
            }
        }
        class TextHolder(val textView: TextView) : RecyclerView.ViewHolder(textView) {
            fun bind(item: String) {
                textView.text = item
            }
        }
    }
}