package xyz.adjutor.aniki.topanime

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import androidx.fragment.app.Fragment
import androidx.navigation.fragment.findNavController
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.snackbar.Snackbar
import com.google.gson.GsonBuilder
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
import xyz.adjutor.aniki.R

class TopAnimePage : Fragment() {

    override fun onCreateView(
            inflater: LayoutInflater, container: ViewGroup?,
            savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        val view = inflater.inflate(R.layout.top_anime_page, container, false)

        makeApiCall(view, base_url)

        return view
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        //button to return to the home page
        view.findViewById<Button>(R.id.button_home).setOnClickListener {
            findNavController().navigate(R.id.action_TopAnimePage_to_HomePage)
        }

    }

    //display the recyclerview
    fun showList(view: View, animeList: List<TopAnime> ){
        val recyclerView: RecyclerView = view.findViewById(R.id.recycler_view)
        recyclerView.setHasFixedSize(true)
        recyclerView.layoutManager = LinearLayoutManager(view.context)
        recyclerView.adapter = TopAnimeAdapter(animeList)
    }

    fun makeApiCall(view: View, BASE_URL: String) {

        val gson = GsonBuilder()
                .setLenient()
                .create()

        val retrofit = Retrofit.Builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .build()

        val service = retrofit.create(TopAnimeApi::class.java)
        val call = service.getTopAnimeData()

        call.enqueue(object : Callback<RestTopAnimeResponse> {
            override fun onResponse(call: Call<RestTopAnimeResponse>, response: Response<RestTopAnimeResponse>) {
                if(response.isSuccessful && response.body() != null){ //if the code returned is >= 200 and < 300 AND the the body ain't empty
                    val animeList = response.body()!!.getResults() //getting the "top" field containing our list of TopAnimes
                    showList(view, animeList) // calling the method in charge of displaying on the recyclerview
                } else {
                    showError() //a snackbar
                }
            }

            override fun onFailure(call: Call<RestTopAnimeResponse>, t: Throwable) {
                showError()
            }

        })
    }

    private fun showError() {
        Snackbar.make(requireView(), "HA? YOU THOUGHT IT WAS AN API !? BUT IT WAS I, ERROR !", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show()
    }

    companion object {
        var base_url = "https://api.jikan.moe/" //the api's base url
    }

}