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.EditorInfo
import android.view.inputmethod.InputMethodManager
import android.widget.Button
import android.widget.EditText
import android.widget.TextView.OnEditorActionListener
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)
        }

        view.findViewById<EditText>(R.id.tiet_query)
            .setOnEditorActionListener(OnEditorActionListener { v, actionId, event ->
                if (actionId == EditorInfo.IME_ACTION_SEARCH) {
                    val userInput =
                        view.findViewById<TextInputEditText>(R.id.tiet_query).text.toString()
                    hideKeyboard()
                    makeApiCall(view, baseUrl, userInput)
                    return@OnEditorActionListener true
                }
                false
            })

    }

    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()
    }

    //call the API and show the list
    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()
            }

        })
    }

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

}