package com.example.gsyvideoplayer.fragment;


import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.gsyvideoplayer.R;
import com.example.gsyvideoplayer.adapter.RecyclerBaseAdapter;
import com.example.gsyvideoplayer.adapter.RecyclerNormalAdapter;
import com.example.gsyvideoplayer.holder.RecyclerItemNormalHolder;
import com.example.gsyvideoplayer.model.VideoModel;
import com.shuyu.gsyvideoplayer.GSYVideoManager;

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

import butterknife.BindView;
import butterknife.ButterKnife;

public class VideoFragment extends Fragment {


    @BindView(R.id.list_item_recycler)
    RecyclerView videoList;

    LinearLayoutManager linearLayoutManager;

    RecyclerBaseAdapter recyclerBaseAdapter;

    List<VideoModel> dataList = new ArrayList<>();


    public VideoFragment() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_video, container, false);

        ButterKnife.bind(this, view);

        resolveData();

        final RecyclerNormalAdapter recyclerNormalAdapter = new RecyclerNormalAdapter(getActivity(), dataList);
        linearLayoutManager = new LinearLayoutManager(getActivity());
        videoList.setLayoutManager(linearLayoutManager);
        videoList.setAdapter(recyclerNormalAdapter);

        videoList.addOnScrollListener(new RecyclerView.OnScrollListener() {

            int firstVisibleItem, lastVisibleItem;

            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                firstVisibleItem = linearLayoutManager.findFirstVisibleItemPosition();
                lastVisibleItem = linearLayoutManager.findLastVisibleItemPosition();
                //大于0说明有播放
                if (GSYVideoManager.instance().getPlayPosition() >= 0) {
                    //当前播放的位置
                    int position = GSYVideoManager.instance().getPlayPosition();
                    //对应的播放列表TAG
                    if (GSYVideoManager.instance().getPlayTag().equals(RecyclerItemNormalHolder.TAG)
                            && (position < firstVisibleItem || position > lastVisibleItem)) {
                        //如果滑出去了上面和下面就是否，和今日头条一样
                        if(!GSYVideoManager.isFullState(getActivity())) {
                            GSYVideoManager.releaseAllVideos();
                            recyclerNormalAdapter.notifyDataSetChanged();
                        }
                    }
                }
            }
        });

        return view;
    }

    public boolean onBackPressed() {
        if (GSYVideoManager.backFromWindowFull(getActivity())) {
            return true;
        }
        return false;
    }

    @Override
    public void onPause() {
        super.onPause();
        GSYVideoManager.onPause();
    }

    @Override
    public void onResume() {
        super.onResume();
        GSYVideoManager.onResume();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        GSYVideoManager.releaseAllVideos();
    }


    private void resolveData() {
        for (int i = 0; i < 19; i++) {
            VideoModel videoModel = new VideoModel();
            dataList.add(videoModel);
        }
        if (recyclerBaseAdapter != null)
            recyclerBaseAdapter.notifyDataSetChanged();
    }
}