Singleton

package com.rasikagayan.android.criminalintent;

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

import java.util.ArrayList;
import java.util.UUID;

/**
 * Created by Rasika Gayan on 12/3/2015.
 */
public class CrimeLab {

    private static final String TAG = "CrimeLab";
    private static final String FILENAME = "crimes.json";

    private ArrayList<Crime> mCrimes;
    private CriminalIntentJSONSerializer mSerializer;

    private static CrimeLab sCrimeLab;
    private Context mAppContext;

    private CrimeLab(Context appContext) {
        mAppContext = appContext;
//        mCrimes = new ArrayList<Crime>();
//        for (int i = 0; i < 100; i++) {
//            Crime c = new Crime();
//            c.setTitle("Crime #" + i);
//            c.setSolved(i % 2 == 0); // every other one
//            mCrimes.add(c);
//        }
        mSerializer = new CriminalIntentJSONSerializer(mAppContext,FILENAME);
        try{
            mCrimes = mSerializer.loadCrimes();
        }catch (Exception e){
            mCrimes = new ArrayList<Crime>();
            Log.e(TAG,"Error loading crimes : " ,e);
        }
    }

    public static CrimeLab get(Context c) {
        if (sCrimeLab == null) {
            sCrimeLab = new CrimeLab(c.getApplicationContext());
        }
        return sCrimeLab;
    }

    public Crime getCrime(UUID id) {
        for (Crime c : mCrimes) {
            if (c.getId().equals(id))
                return c;
        }
        return null;
    }

    public ArrayList<Crime> getCrimes() {
        return mCrimes;
    }

    public void addCrime(Crime m){
        mCrimes.add(m);
    }

    public boolean saveCrimes(){
        try{
            mSerializer.saveCrimes(mCrimes);
            Log.d(TAG, "crimes saved to file");
            return true;
        }catch (Exception e){
            Log.e(TAG, "Error saving crimes: ", e);
            return false;
        }
    }

    public void deleteCrime(Crime c){
        mCrimes.remove(c);
    }
}