LibreTube/app/src/main/java/xyz/btcland/libretube/Home.kt

package xyz.btcland.libretube

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ProgressBar
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.gson.GsonBuilder
import com.google.gson.reflect.TypeToken
import okhttp3.*
import java.io.IOException


// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [Home.newInstance] factory method to
 * create an instance of this fragment.
 */
class Home : Fragment() {
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {

        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_home, container, false)

    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val recyclerView =  view.findViewById<RecyclerView>(R.id.recview)
        recyclerView.layoutManager = GridLayoutManager(view.context, resources.getInteger(R.integer.grid_items))

        val progressbar = view.findViewById<ProgressBar>(R.id.progressBar)
        fetchJson(progressbar,recyclerView)


    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment Home.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
            Home().apply {
                arguments = Bundle().apply {
                    putString(ARG_PARAM1, param1)
                    putString(ARG_PARAM2, param2)
                }
            }
    }

   private fun fetchJson(progressBar: ProgressBar, recyclerView: RecyclerView) {
        val client = OkHttpClient()

        fun run() {
            val request = Request.Builder()
                .url("http://piped-api.alefvanoon.xyz/trending?region=US")
                .build()
            client.newCall(request).enqueue(object : Callback {
                override fun onFailure(call: Call, e: IOException) {
                    e.printStackTrace()
                }
                override fun onResponse(call: Call, response: Response) {
                    response.use {
                        if (!response.isSuccessful) throw IOException("Unexpected code $response")
                        val body = response.body!!.string()
                        println(body)
                        val gson = GsonBuilder().create()
                        val itemType = object : TypeToken<List<Video>>() {}.type
                        val trendingList = gson.fromJson<List<Video>>(body, itemType)
                        runOnUiThread {
                            progressBar.visibility = View.GONE
                            recyclerView.adapter = TrendingAdapter(trendingList)
                        }
                    }


                }
            })
        }
       run()

    }
    fun Fragment?.runOnUiThread(action: () -> Unit) {
        this ?: return
        if (!isAdded) return // Fragment not attached to an Activity
        activity?.runOnUiThread(action)
    }
}