package com.linseykate.findingfido;

/**
 * Activity that appears when a photo
 * has been uploaded;
 * shows matched pictures, if any
 */

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Base64;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;

import com.firebase.client.Firebase;

import java.util.ArrayList;

public class MatchActivity extends AppCompatActivity {
    ArrayList<DogAttributes> dogRecords;
    ArrayList<ImageItem> imageItems = new ArrayList<>();
    ArrayList<String> notificationList = new ArrayList<>();
    DogAttributes dogToMatch;
    String recordNo;
    ArrayList<RecordNoKeeper> recordsIds;
    Firebase ref = new Firebase("https://findingfido.firebaseio.com/");

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

        dogRecords = ((GlobalVariables) getApplication()).getDogRecords();
        dogToMatch = ((GlobalVariables) getApplication()).getDogToMatch();
        recordNo = ((GlobalVariables)getApplication()).getRecentRecordNo();
        recordsIds = ((GlobalVariables)getApplication()).getRecordIds();
        /*System.out.println("TEST dogRecords Match:" + dogRecords.size());
        System.out.println("TEST recordIds Match:" + recordsIds.size());*/

        ImageView submittedDog = (ImageView)findViewById(R.id.ivDogToMatch);
        submittedDog.setImageBitmap(decodeBase64(dogToMatch.getImageString()));

        for(int i=0; i<dogRecords.size(); i++)
        {
            /*Match first by color, ensuring not the same image
            * Then check size with range of 5 either way
            * Later can check for other measurements*/
            if(dogRecords.get(i).getColor().equals(dogToMatch.getColor()) && !dogRecords.get(i).getImageString().equals(dogToMatch.getImageString())){
                if(dogRecords.get(i).getSize()<=(dogToMatch.getSize()+5) && dogRecords.get(i).getSize()>=(dogToMatch.getSize()-5)) {
                    submittedDog.setImageBitmap(decodeBase64(dogToMatch.getImageString()));
                    Bitmap myBitmapAgain = decodeBase64(dogRecords.get(i).getImageString());
                    imageItems.add(new ImageItem(myBitmapAgain, getRecordId(dogRecords.get(i).getImageString())));
                    String [] alerts = ((GlobalVariables) getApplication()).getNotifications();
                    if(alerts!=null) {
                            for (int j = 0; j < alerts.length; j++) {
                                notificationList.add(alerts[j]);
                            }
                    }
                    System.out.println(getRecordId(dogRecords.get(i).getImageString()));
                    String message = "Dog record "+getRecordId(dogRecords.get(i).getImageString())+" has been matched with your dog!";
                    notificationList.add(message);
                    String [] newAlerts = new String[notificationList.size()];
                    ((GlobalVariables) getApplication()).setNotifications(notificationList.toArray(newAlerts));
                }
            }
        }
        //Adapted from http://stackoverflow.com/questions/9768611/encode-and-decode-bitmap-object-in-base64-string-in-android
        final GridView gridView;
        GridViewAdapter gridAdapter;
        gridView = (GridView) findViewById(R.id.matchGridView);
        gridAdapter = new GridViewAdapter(this, R.layout.grid_item_layout, imageItems);
        gridView.setAdapter(gridAdapter);
        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                //Remove both images from Firebase
                //System.out.println(recordNo);
                ref.child(recordNo).removeValue();
                ImageItem item = (ImageItem) parent.getItemAtPosition(position);
                ref.child(item.getTitle()).removeValue();
            }
        });
    }

    private String getRecordId(String imageStr) {
        for(int i=0; i<recordsIds.size(); i++){
            if(recordsIds.get(i).getImageString().equals(imageStr)){
                return recordsIds.get(i).getRecordKey();
            }
        }
        return null;
    }

    //Taken from http://stackoverflow.com/questions/9768611/encode-and-decode-bitmap-object-in-base64-string-in-android
    public static Bitmap decodeBase64(String input)
    {
        byte[] decodedBytes = Base64.decode(input, 0);
        return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.length);
    }
}