package xyz.fancystuff.fancysearchwidget.common.adapter

import android.content.Context
import android.view.LayoutInflater
import android.view.View.GONE
import android.view.View.VISIBLE
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import kotlinx.android.synthetic.main.listitem_config_title.view.*
import xyz.fancystuff.fancysearchwidget.R
import xyz.fancystuff.fancysearchwidget.common.model.*
import xyz.fancystuff.fancysearchwidget.common.util.UniversalViewHolder

class ConfigListAdapter(val context: Context, var items: List<ConfigItem> = listOf()) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

    companion object {
        private const val VIEW_TYPE_TITLE = 0
        private const val VIEW_TYPE_FOOTER = 1
        private const val VIEW_TYPE_CORNERS = 2
        private const val VIEW_TYPE_CLICK_ACTION = 3
        private const val VIEW_TYPE_LIST_HORIZONTAL = 4
        private const val VIEW_TYPE_LIST_VERTICAL = 5
        private const val VIEW_TYPE_WIDGET_SINGULAR = 6
        private const val VIEW_TYPE_WIDGET_LIST = 7
    }

    private val recyclerViewPool by lazy { RecyclerView.RecycledViewPool() }

    private fun ConfigItem.getViewPool() = when (this) {
        is HorizontalListItem -> recyclerViewPool
        else -> null
    }

    override fun getItemCount() = items.size

    override fun getItemViewType(position: Int) = when (items[position]) {
        is TitleItem -> VIEW_TYPE_TITLE
        is HorizontalListItem -> VIEW_TYPE_LIST_HORIZONTAL
        is VerticalListItem -> VIEW_TYPE_LIST_VERTICAL
        is CornerRadiusItem -> VIEW_TYPE_CORNERS
        is ClickActionItem -> VIEW_TYPE_CLICK_ACTION
        is WidgetPreviewItem -> VIEW_TYPE_WIDGET_SINGULAR
        is WidgetListPreviewItem -> VIEW_TYPE_WIDGET_LIST
        is FooterItem -> VIEW_TYPE_FOOTER
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder = when (viewType) {
        VIEW_TYPE_LIST_HORIZONTAL -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_list, parent, false))
        VIEW_TYPE_LIST_VERTICAL -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_list, parent, false))
        VIEW_TYPE_CORNERS -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_corners, parent, false))
        VIEW_TYPE_CLICK_ACTION -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_click_action, parent, false))
        VIEW_TYPE_TITLE -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_title, parent, false))
        VIEW_TYPE_WIDGET_SINGULAR -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_widget_preview, parent, false))
        VIEW_TYPE_WIDGET_LIST -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_list, parent, false))
        else -> UniversalViewHolder(
                LayoutInflater.from(parent.context)
                        .inflate(R.layout.listitem_config_footer, parent, false))
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        val item = items[position]
        when (item) {
            is TitleItem -> with (holder.itemView) {
                title.setText(item.title)
                icon.setImageResource(item.icon)
                actionButton.visibility = if (item.key != null) VISIBLE else GONE
                actionButton.setOnClickListener {
                    if (position + 1 >= items.size) return@setOnClickListener
                    items[position + 1].adapter?.addItem()
                }
            }
            else -> items[position].adapter?.onBind(holder.itemView, item, item.getViewPool())
        }
    }

}