package com.example.sam.recycleviewprac;

import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // get data
        List<Spot> myListSpot = getSpots();
        // get the container view
        RecyclerView myRvSpot = (RecyclerView)findViewById(R.id.rv_ID);
        if (myRvSpot != null){
            // set layoutManager to setup overall designing strucuture;
            // 三選一:
            myRvSpot.setLayoutManager(new LinearLayoutManager(this));
            //myRvSpot.setLayoutManager(new GridLayoutManager(this,1));
            //myRvSpot.setLayoutManager(new StaggeredGridLayoutManager(3,1));
            // set Adapter for the container view - put context(載入view用) and data into it
            myRvSpot.setAdapter(new SpotAdapter(this, myListSpot));

        }

    }
    //
    // RecyclerView.Adapter< VH extends android.support.v7.widget.RecyclerView.ViewHolder>
    // generic matters here: <SpotAdapter.ViewHolder>
    public class SpotAdapter extends RecyclerView.Adapter<SpotAdapter.MyViewHolder>  {
        private Context context;
        private List<Spot> myListSpot;
        private LayoutInflater myLayoutInflater;

        public SpotAdapter(Context context, List<Spot> myListSpot) {
            this.context = context;
            this.myListSpot = myListSpot;
            myLayoutInflater = LayoutInflater.from(context);
        }

        @Override
        public int getItemCount() {
            return this.myListSpot.size();
        }

        // create a ViewHoder class that is child of RecyclerView.ViewHolder
        // 因為繼承RecyclerView.Adapter<E extends RecyclerView.ViewHolder>其中有個方法改寫時需要用到
        public class MyViewHolder extends RecyclerView.ViewHolder{
            ImageView ivImage;
            TextView tvHotel;
            TextView tvPrice;
            // 把拿到的到個view的資料一個個存好成實體變數
            public MyViewHolder(View itemView) {
                super(itemView); // 必須使用這個父建構式，因為RecyclerView.ViewHolder沒有空參數的建構式 - 用父類別的實體變數來指向這個View物件,第90行會用到
                this.ivImage = (ImageView) itemView.findViewById(R.id.ivImage);
                this.tvHotel = (TextView) itemView.findViewById(R.id.tvHotel);
                this.tvPrice = (TextView) itemView.findViewById(R.id.tvPrice);
            }
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            // 將customed layout載入，並裝在ViewHolder中回傳給RecyclerView使用
            View itemView = this.myLayoutInflater.inflate(R.layout.recycleview_item, parent, false);
            return new MyViewHolder(itemView); //可將ViewHolder
        }

        @Override
        // onBindViewHolder(VH holder, int ｄposition): VH
        //                          (         view        ,      data   )
        public void onBindViewHolder(MyViewHolder viewHolder, final int position) {
            Spot mySpot = myListSpot.get(position);
            viewHolder.ivImage.setImageResource(mySpot.getimgId());
            viewHolder.tvHotel.setText(mySpot.getHotelName());
            viewHolder.tvPrice.setText(Integer.toString(mySpot.getPrice()) + "$");

            viewHolder.itemView.setOnClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View view) {
                    Spot Spot = myListSpot.get(position);
                    //showImgToast(mySpot2.getimgId());
                    Intent intent = new Intent(MainActivity.this, ResultImg.class);
                    Bundle bundle = new Bundle();
                    bundle.putSerializable("Spot", Spot);
                    intent.putExtras(bundle);
                    startActivity(intent);
                }
            });
        }
    }// end


    private void showImgToast(int imgId){
        ImageView imageView = new ImageView(getApplicationContext());
        imageView.setImageResource(imgId);
        Toast toast = new Toast(getApplicationContext());
        toast.setView(imageView);
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.show();
    }

    private List<Spot> getSpots() {
        List<Spot> spots = new ArrayList<>();
        spots.add(new Spot(R.drawable.hotel1,"福華飯店",300));
        spots.add(new Spot(R.drawable.hotel2,"青年旅館",100));
        spots.add(new Spot(R.drawable.hotel3,"我家三樓房間",50));
        return spots;
    }
}