package com.github.libretube

import android.content.Context
import android.os.Bundle
import android.util.Log
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.*
import androidx.lifecycle.lifecycleScope
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
import com.github.libretube.adapters.ChannelAdapter
import com.github.libretube.adapters.PlaylistsAdapter
import com.github.libretube.adapters.SubscriptionAdapter
import com.github.libretube.obj.Playlists
import com.squareup.picasso.Picasso
import retrofit2.HttpException
import java.io.IOException


class Library : Fragment() {

    private val TAG = "LibraryFragment"
    lateinit var token: String
    lateinit var playlistRecyclerView: RecyclerView
    lateinit var refreshLayout: SwipeRefreshLayout
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {

        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_library, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        playlistRecyclerView = view.findViewById(R.id.playlist_recView)
        playlistRecyclerView.layoutManager = LinearLayoutManager(view.context)
        val sharedPref = context?.getSharedPreferences("token", Context.MODE_PRIVATE)
        token = sharedPref?.getString("token","")!!
        if(token!="") {
            refreshLayout = view.findViewById(R.id.playlist_refresh)
            view.findViewById<ImageView>(R.id.boogh2).visibility=View.GONE
            view.findViewById<TextView>(R.id.textLike2).visibility=View.GONE
            fetchPlaylists(view)
            refreshLayout?.isEnabled = true
            refreshLayout?.setOnRefreshListener {
                Log.d(TAG,"hmm")
                fetchPlaylists(view)
            }
            val playlistName = view.findViewById<EditText>(R.id.playlists_name)
            view.findViewById<Button>(R.id.create_playlist).setOnClickListener {
                if(playlistName.text.toString()!="") createPlaylist(playlistName.text.toString(),view)
            }
        } else{
            with(view.findViewById<ImageView>(R.id.boogh2)){
                visibility=View.VISIBLE
                setImageResource(R.drawable.ic_login)
            }
            with(view.findViewById<TextView>(R.id.textLike2)){
                visibility=View.VISIBLE
                text = getString(R.string.please_login)
            }
        }
    }

    private fun fetchPlaylists(view: View){
        fun run() {
            refreshLayout?.isRefreshing = true
            lifecycleScope.launchWhenCreated {
                val response = try {
                    RetrofitInstance.api.playlists(token)
                }catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    Toast.makeText(context,R.string.unknown_error, Toast.LENGTH_SHORT).show()
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response")
                    Toast.makeText(context,R.string.server_error, Toast.LENGTH_SHORT).show()
                    return@launchWhenCreated
                }finally {
                    refreshLayout?.isRefreshing = false
                }
                if (response.isNotEmpty()){
                    runOnUiThread {
                        with(view.findViewById<ImageView>(R.id.boogh2)){
                            visibility=View.GONE
                        }
                        with(view.findViewById<TextView>(R.id.textLike2)){
                            visibility=View.GONE
                        }
                    }
                    val playlistsAdapter = PlaylistsAdapter(response.toMutableList())
                    playlistRecyclerView.adapter= playlistsAdapter
                }else{
                    runOnUiThread {
                        with(view.findViewById<ImageView>(R.id.boogh2)){
                            visibility=View.VISIBLE
                            setImageResource(R.drawable.ic_list)
                        }
                        with(view.findViewById<TextView>(R.id.textLike2)){
                            visibility=View.VISIBLE
                            text = getString(R.string.emptyList)
                        }
                    }
                }

            }
        }
        run()
    }
    private fun createPlaylist(name: String, view: View){
        fun run() {
            lifecycleScope.launchWhenCreated {
                val response = try {
                    RetrofitInstance.api.createPlaylist(token, Playlists(name = name))
                }catch(e: IOException) {
                    println(e)
                    Log.e(TAG, "IOException, you might not have internet connection")
                    Toast.makeText(context,R.string.unknown_error, Toast.LENGTH_SHORT).show()
                    return@launchWhenCreated
                } catch (e: HttpException) {
                    Log.e(TAG, "HttpException, unexpected response $e")
                    Toast.makeText(context,R.string.server_error, Toast.LENGTH_SHORT).show()
                    return@launchWhenCreated
                }
                if (response != null){
                    Toast.makeText(context,R.string.playlistCreated, Toast.LENGTH_SHORT).show()
                    fetchPlaylists(view)
                }else{

                }

            }
        }
        run()
    }

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