package com.covalima.rekomendasaunaihan.ui.rekomendasi

import android.content.Intent
import android.view.LayoutInflater
import android.view.ViewGroup
import android.widget.Toast
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import com.covalima.rekomendasaunaihan.R
import com.covalima.rekomendasaunaihan.databinding.ItemRekomendasaunHasilBinding
import com.covalima.rekomendasaunaihan.model.FavoritoToggleRequest
import com.covalima.rekomendasaunaihan.model.FavoritoToggleResponse
import com.covalima.rekomendasaunaihan.model.Rekomendasi
import com.covalima.rekomendasaunaihan.network.ApiClient
import com.covalima.rekomendasaunaihan.ui.detail.DetailAihanActivity
import com.covalima.rekomendasaunaihan.util.DeviceUtil
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response

/**
 * Adapter ba lista rezultadu rekomendasaun kompletu (tuir formátu
 * Tabela 3.9-3.11 iha proposta: Rank, Ai-han, Similarity, Status).
 * Aumenta buton "Aumenta ba Favoritu" (ikon fuik/heart) atu utilizadór
 * bele rai rezultadu ne'ebé nia hakarak, haree fila iha "Lista Favoritu".
 */
class RekomendasaunHasilAdapter(
    private var listaHasil: List<Rekomendasi>
) : RecyclerView.Adapter<RekomendasaunHasilAdapter.HasilViewHolder>() {

    inner class HasilViewHolder(val binding: ItemRekomendasaunHasilBinding) :
        RecyclerView.ViewHolder(binding.root)

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HasilViewHolder {
        val binding = ItemRekomendasaunHasilBinding.inflate(LayoutInflater.from(parent.context), parent, false)
        return HasilViewHolder(binding)
    }

    override fun onBindViewHolder(holder: HasilViewHolder, position: Int) {
        val item = listaHasil[position]
        val rank = position + 1
        val context = holder.itemView.context

        holder.binding.tvRank.text = rank.toString()
        holder.binding.tvNaranAihan.text = item.naranAihan
        holder.binding.tvKategoria.text = "Kategoria: ${item.naranKategoria ?: "-"}"
        holder.binding.tvSimilaridade.text = String.format("%.2f", item.similaridade)
        holder.binding.tvStatus.text = statusHanesan(item.similaridade)

        Glide.with(context)
            .load(ApiClient.getFotoUrl(item.foto))
            .into(holder.binding.imgAihan)

        // Buton "Aumenta ba Favoritu" (ikon fuik/heart) - toggle add/remove
        var isFavorito = false // estadu lokál de'it (server mak "fonte verdade")
        holder.binding.imgFavorito.setImageResource(R.drawable.ic_heart_outline)
        holder.binding.imgFavorito.setOnClickListener {
            val deviceId = DeviceUtil.getDeviceId(context)
            val request = FavoritoToggleRequest(idAihan = item.idAihan, idUser = deviceId)
            ApiClient.apiService.toggleFavorito(request).enqueue(object : Callback<FavoritoToggleResponse> {
                override fun onResponse(call: Call<FavoritoToggleResponse>, response: Response<FavoritoToggleResponse>) {
                    val body = response.body()
                    if (body?.status == "success") {
                        isFavorito = body.isFavorito
                        holder.binding.imgFavorito.setImageResource(
                            if (isFavorito) R.drawable.ic_heart_filled else R.drawable.ic_heart_outline
                        )
                        val msg = if (isFavorito) "Aumenta ba Favoritu: ${item.naranAihan}" else "Hamos husi Favoritu: ${item.naranAihan}"
                        Toast.makeText(context, msg, Toast.LENGTH_SHORT).show()
                    }
                }

                override fun onFailure(call: Call<FavoritoToggleResponse>, t: Throwable) {
                    Toast.makeText(context, "Konesaun falha: ${t.message}", Toast.LENGTH_SHORT).show()
                }
            })
        }

        holder.itemView.setOnClickListener {
            val intent = Intent(context, DetailAihanActivity::class.java)
            intent.putExtra("id_aihan", item.idAihan)
            context.startActivity(intent)
        }
    }

    override fun getItemCount() = listaHasil.size

    fun updateData(newList: List<Rekomendasi>) {
        listaHasil = newList
        notifyDataSetChanged()
    }

    /**
     * Klasifika nivel semellansa tuir valor Cosine Similarity,
     * hanesan iha tabela "Status" iha proposta (Kapítulu 3.11-3.12).
     */
    private fun statusHanesan(similaridade: Double): String {
        return when {
            similaridade >= 0.85 -> "Hanesan Tebes"
            similaridade >= 0.60 -> "Hanesan"
            similaridade >= 0.30 -> "Hanesan"
            else -> "La Hanesan"
        }
    }
}