package com.asi.lodemorerecy;


import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;



public class DataAdapter extends RecyclerView.Adapter {
private final int VIEW_ITEM = 1;
private final int VIEW_PROG = 0;

private List<Student> studentList;

// The minimum amount of items to have below your current scroll position
// before loading more.
private int visibleThreshold = 5;
private int lastVisibleItem, totalItemCount;
private boolean loading;
private OnLoadMoreListener onLoadMoreListener;



public DataAdapter(List<Student> students, RecyclerView recyclerView) {
        studentList = students;

        if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {

final LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView
        .getLayoutManager();


        recyclerView
        .addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(RecyclerView recyclerView,
        int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        totalItemCount = linearLayoutManager.getItemCount();
        lastVisibleItem = linearLayoutManager
        .findLastVisibleItemPosition();
        if (!loading
        && totalItemCount <= (lastVisibleItem + visibleThreshold)) {
        // End has been reached
        // Do something
        if (onLoadMoreListener != null) {
        onLoadMoreListener.onLoadMore();
        }
        loading = true;
        }
        }
        });
        }
        }

@Override
public int getItemViewType(int position) {
        return studentList.get(position) != null ? VIEW_ITEM : VIEW_PROG;
        }

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent,
        int viewType) {
        RecyclerView.ViewHolder vh;
        if (viewType == VIEW_ITEM) {
        View v = LayoutInflater.from(parent.getContext()).inflate(
        R.layout.list_row, parent, false);

        vh = new StudentViewHolder(v);
        } else {
        View v = LayoutInflater.from(parent.getContext()).inflate(
        R.layout.progressbar_item, parent, false);

        vh = new ProgressViewHolder(v);
        }
        return vh;
        }

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (holder instanceof StudentViewHolder) {

        Student singleStudent= (Student) studentList.get(position);

        ((StudentViewHolder) holder).tvName.setText(singleStudent.getName());

        ((StudentViewHolder) holder).tvEmailId.setText(singleStudent.getEmailId());

        ((StudentViewHolder) holder).student= singleStudent;

        } else {
        ((ProgressViewHolder) holder).progressBar.setIndeterminate(true);
        }
        }

public void setLoaded() {
        loading = false;
        }

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

public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
        this.onLoadMoreListener = onLoadMoreListener;
        }


//
public static class StudentViewHolder extends RecyclerView.ViewHolder {
    public TextView tvName;

    public TextView tvEmailId;

    public Student student;

    public StudentViewHolder(View v) {
        super(v);
        tvName = (TextView) v.findViewById(R.id.tvName);

        tvEmailId = (TextView) v.findViewById(R.id.tvEmailId);

        v.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(v.getContext(),
                        "OnClick :" + student.getName() + " \n "+student.getEmailId(),
                        Toast.LENGTH_SHORT).show();

            }
        });
    }
}

public static class ProgressViewHolder extends RecyclerView.ViewHolder {
    public ProgressBar progressBar;

    public ProgressViewHolder(View v) {
        super(v);
        progressBar = (ProgressBar) v.findViewById(R.id.progressBar1);
    }
}