package com.dementiev.realtest

import android.content.Context
import android.support.v7.widget.RecyclerView
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import android.util.TypedValue
import android.view.animation.AnimationUtils
import android.widget.LinearLayout
import android.widget.FrameLayout


/**
 * Example imutable adapter with animations
 */
class TestListAdapter(val context: Context, val items: List<Entity1>, val clickListener: (Entity1) -> Unit) : RecyclerView.Adapter<TestListAdapter.TestViewHolder1>() {
    /* // This is how our entity class looks
        data class Entity1(val _id: Int, val _text: String) {
            var id = _id
            var text = _text
        }
     */

    //optimization of resource usage
    private val DP16: Int = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16f, context.resources.displayMetrics).toInt()

    // do not load the animation here, it wont be beauty, because it is instance of a tweener
    //private val animation: Animation = AnimationUtils.loadAnimation(context, android.R.anim.slide_in_left)


    override fun onBindViewHolder(holder: TestViewHolder1?, position: Int) {
        val item = getItem(position)
        holder?.label?.text = item.text
        holder?.container?.setOnClickListener { clickListener(item) }

        holder?.container?.let { animate(it) } // animate new view
    }

    private fun animate(root: View) {
        AnimationUtils
                .loadAnimation(context, android.R.anim.slide_in_left)
                .let(root::startAnimation)
    }

    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): TestViewHolder1 {
        val layout = FrameLayout(parent?.context)
        val lp = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
        layout.setPadding(0, DP16, 0, DP16)
        layout.layoutParams = lp

        val textView = TextView(parent?.context)
        val tlp = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
        textView.layoutParams = tlp
        layout.addView(textView)

        return TestViewHolder1(layout, textView)
    }

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


    private fun getItem(position: Int): Entity1 {
        return items[position]
    }

    class TestViewHolder1(containerView: View?, textView: TextView?) : RecyclerView.ViewHolder(containerView) {
        var container: View? = containerView
        var label: TextView? = textView
    }
}