package com.faizanexample.deventerclass.JSONReadingWriting;

import android.content.Context;
import android.util.Log;
import android.widget.Toast;

import com.faizanexample.deventerclass.Model.Animal;
import com.google.gson.Gson;

import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.List;



public class JSONHelper {
    private static final String FILE_NAME="Animal_Dat.json";
    private static final String TAG="JSONHelper";
    public static boolean exportToJSON(Context context, List<Animal> animalList){
        AnimalItem animalItem=new AnimalItem();
        animalItem.setAnimals(animalList);
        Gson gson=new Gson();
        String jsonString =gson.toJson(animalItem);
        //Log.i(TAG,jsonString);
        FileOutputStream outputStream=null;
        File file=new File(context.getFilesDir()+"/"+FILE_NAME);
        try {
            outputStream=new FileOutputStream(file);

            if(outputStream==null){Log.i(TAG,"Null");}
            outputStream.write(jsonString.getBytes());
             return true;

        } catch (IOException e) {
            Toast.makeText(context,"File Exception: "+e.getMessage(),Toast.LENGTH_SHORT);
        } finally {
            try {
                outputStream.close();
            } catch (IOException e) {
                Toast.makeText(context,"File Exception: "+e.getMessage(),Toast.LENGTH_SHORT);
            }
        }


        return false;
    }
    public static List<Animal> importFromJSON(Context context){
        FileReader reader=null;
        File file=new File(context.getFilesDir()+"/"+FILE_NAME);
        try {
            reader=new FileReader(file);
            Gson gson=new Gson();
            AnimalItem animalItem=gson.fromJson(reader,AnimalItem.class);


            return animalItem.getAnimals();

        } catch (IOException e) {
            Toast.makeText(context,"File Exception: "+e.getMessage(),Toast.LENGTH_SHORT);
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                Toast.makeText(context,"File Exception: "+e.getMessage(),Toast.LENGTH_SHORT);
            }
        }
        return null;
    }
    public static class AnimalItem{
        List<Animal> animals;

        public List<Animal> getAnimals() {
            return animals;
        }

        public void setAnimals(List<Animal> animals) {
            this.animals = animals;
        }
    }
}