package com.pitchedapps.frost.activities

import android.app.Activity
import android.content.res.ColorStateList
import android.os.Bundle
import com.google.android.material.floatingactionbutton.FloatingActionButton
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import androidx.recyclerview.widget.ItemTouchHelper
import android.view.View
import android.view.animation.AnimationUtils
import android.widget.TextView
import ca.allanwang.kau.kotlin.lazyContext
import ca.allanwang.kau.utils.bindView
import ca.allanwang.kau.utils.scaleXY
import ca.allanwang.kau.utils.setIcon
import ca.allanwang.kau.utils.withAlpha
import com.mikepenz.fastadapter.commons.adapters.FastItemAdapter
import com.mikepenz.fastadapter_extensions.drag.ItemTouchCallback
import com.mikepenz.fastadapter_extensions.drag.SimpleDragCallback
import com.mikepenz.google_material_typeface_library.GoogleMaterial
import com.pitchedapps.frost.R
import com.pitchedapps.frost.dbflow.TAB_COUNT
import com.pitchedapps.frost.dbflow.loadFbTabs
import com.pitchedapps.frost.dbflow.save
import com.pitchedapps.frost.facebook.FbItem
import com.pitchedapps.frost.iitems.TabIItem
import com.pitchedapps.frost.utils.Prefs
import com.pitchedapps.frost.utils.setFrostColors
import java.util.*

/**
 * Created by Allan Wang on 26/11/17.
 */
class TabCustomizerActivity : BaseActivity() {

    val toolbar: View by bindView(R.id.pseudo_toolbar)
    val recycler: RecyclerView by bindView(R.id.tab_recycler)
    val instructions: TextView by bindView(R.id.instructions)
    val divider: View by bindView(R.id.divider)
    val adapter = FastItemAdapter<TabIItem>()
    val fabCancel: FloatingActionButton by bindView(R.id.fab_cancel)
    val fabSave: FloatingActionButton by bindView(R.id.fab_save)

    private val wobble = lazyContext { AnimationUtils.loadAnimation(it, R.anim.rotate_delta) }

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

        toolbar.setBackgroundColor(Prefs.headerColor)

        recycler.layoutManager = GridLayoutManager(this, TAB_COUNT, RecyclerView.VERTICAL, false)
        recycler.adapter = adapter
        recycler.setHasFixedSize(true)

        divider.setBackgroundColor(Prefs.textColor.withAlpha(30))
        instructions.setTextColor(Prefs.textColor)

        val tabs = loadFbTabs().toMutableList()
        val remaining = FbItem.values().filter { it.name[0] != '_' }.toMutableList()
        remaining.removeAll(tabs)
        tabs.addAll(remaining)

        adapter.add(tabs.map(::TabIItem))
        bindSwapper(adapter, recycler)

        adapter.withOnClickListener { view, _, _, _ -> view!!.wobble(); true }

        setResult(Activity.RESULT_CANCELED)

        fabSave.setIcon(GoogleMaterial.Icon.gmd_check, Prefs.iconColor)
        fabSave.backgroundTintList = ColorStateList.valueOf(Prefs.accentColor)
        fabSave.setOnClickListener {
            adapter.adapterItems.subList(0, TAB_COUNT).map(TabIItem::item).save()
            setResult(Activity.RESULT_OK)
            finish()
        }
        fabCancel.setIcon(GoogleMaterial.Icon.gmd_close, Prefs.iconColor)
        fabCancel.backgroundTintList = ColorStateList.valueOf(Prefs.accentColor)
        fabCancel.setOnClickListener { finish() }
        setFrostColors {
            themeWindow = true
        }
    }

    private fun View.wobble() = startAnimation(wobble(context))

    private fun bindSwapper(adapter: FastItemAdapter<*>, recycler: RecyclerView) {
        val dragCallback = TabDragCallback(SimpleDragCallback.ALL, swapper(adapter))
        ItemTouchHelper(dragCallback).attachToRecyclerView(recycler)
    }

    private fun swapper(adapter: FastItemAdapter<*>) = object : ItemTouchCallback {
        override fun itemTouchOnMove(oldPosition: Int, newPosition: Int): Boolean {
            Collections.swap(adapter.adapterItems, oldPosition, newPosition)
            adapter.notifyAdapterDataSetChanged()
            return true
        }

        override fun itemTouchDropped(oldPosition: Int, newPosition: Int) = Unit
    }


    private class TabDragCallback(
            directions: Int, itemTouchCallback: ItemTouchCallback
    ) : SimpleDragCallback(directions, itemTouchCallback) {

        private var draggingView: TabIItem.ViewHolder? = null

        override fun onSelectedChanged(viewHolder: RecyclerView.ViewHolder?, actionState: Int) {
            super.onSelectedChanged(viewHolder, actionState)
            when (actionState) {
                ItemTouchHelper.ACTION_STATE_DRAG -> {
                    (viewHolder as? TabIItem.ViewHolder)?.apply {
                        draggingView = this
                        itemView.animate().scaleXY(1.3f)
                        text.animate().alpha(0f)
                    }
                }
                ItemTouchHelper.ACTION_STATE_IDLE -> {
                    draggingView?.apply {
                        itemView.animate().scaleXY(1f)
                        text.animate().alpha(1f)
                    }
                    draggingView = null
                }
            }
        }

    }

}