package com.example.liseandersen.databasetest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

        private HashMap<String, Integer> moodHistory;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            MainActivity db = new MainActivity();
            System.out.println("VIRKER DET OVERHOVEDET?");
            System.out.println(MainActivity.this.getFilesDir().getAbsolutePath().toString());
            db.saveTest();
                db.loadTest();
        }

        public void saveTest() {
            moodHistory = new HashMap<String, Integer>();
            String stien_hvor_du_vil_gemme_data = "data.db";
            moodHistory.put("Test 1", 1);
            moodHistory.put("Test 2", 2);
            moodHistory.put("Test 3", 3);

            try {
                saveObjectToFile(stien_hvor_du_vil_gemme_data, moodHistory);
                System.out.println("ER JEG HER1?");
            } catch (IOException e) {
                e.printStackTrace();
                System.out.println("ER JEG HER 2?");
            }
        }

        public void loadTest() {
            String stien_hvor_du_vil_hente_data_fra = "data.db";
            try {
                moodHistory = (HashMap<String, Integer>) readFileToObject(stien_hvor_du_vil_hente_data_fra);

                for(Map.Entry<String, Integer> entry : moodHistory.entrySet()) {
                    System.out.println("KEY: " + entry.getKey() + " VALUE: " + entry.getValue());
                }

            } catch (IOException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
        }

        private Object readFileToObject(String path) throws IOException, ClassNotFoundException {
            FileInputStream fis = new FileInputStream(new File(path));
            ObjectInputStream ois = new ObjectInputStream(fis);
            Object target = ois.readObject();
            ois.close();
            return target;
        }

        private void saveObjectToFile(String path, Object obj) throws IOException {
            FileOutputStream fos = new FileOutputStream(path);
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(obj);
            oos.close();
        }
    }