package ai.pai.ptp.test;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

import java.util.ArrayList;

import ai.pai.ptp.R;

public class TestPhotoGridAdapter extends BaseAdapter {

    private MyTestActivity cameraActivity;
    private ArrayList<Photo> photos;
    private GridView gridView;
    private LayoutInflater inflater;
    private int height;

    public TestPhotoGridAdapter(MyTestActivity context, GridView gridView) {
        cameraActivity = context;
        this.gridView = gridView;
        photos = new ArrayList<>();
        inflater = LayoutInflater.from(context);
        int screenW = context.getResources().getDisplayMetrics().widthPixels;
        height = (int) (screenW - 4 * 3 * context.getResources().getDisplayMetrics().density) / 3;
    }

    @Override
    public int getCount() {
        return photos.size();
    }

    @Override
    public Object getItem(int position) {
        return photos.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    public void addPhoto(final Photo photo) {
        gridView.post(new Runnable() {
            @Override
            public void run() {
                photos.add(0, photo);
                notifyDataSetChanged();
            }
        });
    }

    public void updatePhoto(final Photo newPhoto) {
        gridView.post(new Runnable() {
            @Override
            public void run() {
                boolean isFound = false;
                for(int k = 0; k < photos.size();k++){
                    if(photos.get(k).handle == newPhoto.handle){
                        photos.get(k).captureTime = newPhoto.captureTime;
                        photos.get(k).thumb = newPhoto.thumb;
                        photos.get(k).origin = newPhoto.origin;
                        photos.get(k).fileName = newPhoto.fileName;
                        isFound = true;
                        break;
                    }
                }
                if(!isFound){
                    photos.add(0,newPhoto);
                }
                notifyDataSetChanged();
            }
        });
    }

    public void addPhotos(final int[] handles){
        gridView.post(new Runnable() {
            @Override
            public void run() {
                ArrayList<Photo> tmp = new ArrayList<>();
                for(int k =0;k<handles.length;k++){
                    Photo photo = new Photo();
                    photo.handle = handles[k];
                    tmp.add(photo);
                }
                photos.addAll(0,tmp);
                notifyDataSetChanged();
            }
        });
    }

    public void clear() {
        gridView.post(new Runnable() {
            @Override
            public void run() {
                photos.clear();
                notifyDataSetChanged();
            }
        });
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.item_grid_photo, null);
            holder = new ViewHolder();
            holder.photo = (ImageView) convertView.findViewById(R.id.iv_photo);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.photo.getLayoutParams().height = height;
        Photo photo = photos.get(position);
        if (photo.thumb != null) {
            holder.photo.setImageBitmap(photo.thumb);
        } else if (photo.origin != null) {
            holder.photo.setImageBitmap(photo.origin);
        } else if(photo.handle >0 && !photo.isSync){
            photo.isSync = true;
            cameraActivity.retrieveImageInfo(photo.handle);
        }
        return convertView;
    }

    final class ViewHolder {
        public ImageView photo;
    }
}