package xyz.adjutor.aniki.manga.search

import android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.inputmethod.InputMethodManager
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.android.material.textfield.TextInputEditText
import com.google.gson.Gson
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.MainActivity
import xyz.adjutor.aniki.R

class SearchMangaPage : Fragment() {

    val gson: Gson = GsonBuilder()
        .setLenient()
        .create()
    private var baseUrl = "https://api.jikan.moe/" //the api's base url

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment

        return inflater.inflate(R.layout.search_manga_page, container, false)
    }


    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_SearchMangaPage_to_HomePage)
        }

        view.findViewById<Button>(R.id.button_query).setOnClickListener{
            val userInput = view.findViewById<TextInputEditText>(R.id.tiet_query).text.toString()
            hideKeyboard()
            makeApiCall(view, baseUrl, userInput)
        }
    }

    private fun hideKeyboard() {
        val activity = activity as MainActivity

        val view = activity.currentFocus
        if (view != null) {
            val imm = activity.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
            imm.hideSoftInputFromWindow(view.windowToken, 0)
        }
    }


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

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

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

        val service = retrofit.create(SearchMangaApi::class.java)
        val call = service.getSearchMangaData(q = query) //fate is an exemple, we'll have to replace it by the user input.

        call.enqueue(object : Callback<SearchMangaResponse> {
            override fun onResponse(
                call: Call<SearchMangaResponse>,
                response: Response<SearchMangaResponse>
            ) {
                if (response.isSuccessful && response.body() != null) { //if the code returned is >= 200 and < 300 AND the the body ain't empty

                    val mangaList: List<SearchManga> = response.body()!!
                        .getResults() //getting the "search" field containing our list of SearchMangas

                    showList(
                        view,
                        mangaList
                    ) //calling the method in charge of displaying on the recyclerview

                } else {
                    showError() //a snackbar
                }
            }

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

        })
    }

    private fun showError() {
        Snackbar.make(requireView(), "API ERROR : Verify your internet connection or your query.", Snackbar.LENGTH_LONG)
            .setAction("Action", null).show()
    }

}