package com.lagradost.cloudstream3.ui.settings.extensions

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.core.view.isVisible
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.RecyclerView
import com.lagradost.cloudstream3.PROVIDER_STATUS_DOWN
import com.lagradost.cloudstream3.R
import kotlinx.android.synthetic.main.repository_item.view.*


data class PluginViewData(
    val plugin: Plugin,
    val isDownloaded: Boolean,
)

class PluginAdapter(
    val iconClickCallback: (Plugin) -> Unit
) :
    RecyclerView.Adapter<RecyclerView.ViewHolder>() {
    private val plugins: MutableList<PluginViewData> = mutableListOf()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        return PluginViewHolder(
            LayoutInflater.from(parent.context).inflate(R.layout.repository_item, parent, false)
        )
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        when (holder) {
            is PluginViewHolder -> {
                holder.bind(plugins[position])
            }
        }
    }

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

    fun updateList(newList: List<PluginViewData>) {
        val diffResult = DiffUtil.calculateDiff(
            PluginDiffCallback(this.plugins, newList)
        )

        plugins.clear()
        plugins.addAll(newList)

        diffResult.dispatchUpdatesTo(this)
    }

    /*
    private var storedPlugins: Array<PluginData> = reloadStoredPlugins()

    private fun reloadStoredPlugins(): Array<PluginData> {
        return PluginManager.getPluginsOnline().also { storedPlugins = it }
    }*/

    inner class PluginViewHolder(itemView: View) :
        RecyclerView.ViewHolder(itemView) {

        fun bind(
            data: PluginViewData,
        ) {
            val metadata = data.plugin.second
            val alpha = if (metadata.status == PROVIDER_STATUS_DOWN) 0.6f else 1f
            itemView.main_text?.alpha = alpha
            itemView.sub_text?.alpha = alpha

            val drawableInt = if (data.isDownloaded)
                R.drawable.ic_baseline_delete_outline_24
            else R.drawable.netflix_download

            itemView.nsfw_marker?.isVisible = metadata.adult == true
            itemView.action_button?.setImageResource(drawableInt)

            itemView.action_button?.setOnClickListener {
                iconClickCallback.invoke(data.plugin)
            }

            itemView.main_text?.text = metadata.name
            itemView.sub_text?.text = metadata.description
        }
    }
}

class PluginDiffCallback(
    private val oldList: List<PluginViewData>,
    private val newList: List<PluginViewData>
) :
    DiffUtil.Callback() {
    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int) =
        oldList[oldItemPosition].plugin.second.internalName == newList[newItemPosition].plugin.second.internalName && oldList[oldItemPosition].plugin.first == newList[newItemPosition].plugin.first

    override fun getOldListSize() = oldList.size

    override fun getNewListSize() = newList.size

    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int) =
        oldList[oldItemPosition] == newList[newItemPosition]
}