package com.lotus.town.account;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Build;

public class AccountManager {
    private static AccountManager INSTANCE;

    private static final String ACCOUNT_PREFERENCES = "account";

    private static final String PREFERENCE_DEVICE_ID = "device_id";

    private SharedPreferences mSharedPreferences;

    private AccountManager(Context context) {
        mSharedPreferences = context.getApplicationContext().getSharedPreferences(ACCOUNT_PREFERENCES, Context.MODE_PRIVATE);
    }

    public static AccountManager getInstance(Context context) {
        if (INSTANCE == null) {
            synchronized (AccountManager.class) {
                if (INSTANCE == null) {
                    INSTANCE = new AccountManager(context);
                }
            }
        }
        return INSTANCE;
    }

    public boolean isNewerNoMark(){
        boolean ret = mSharedPreferences.getString(PREFERENCE_DEVICE_ID, null) == null;
        return ret;
    }

    public boolean isNewer() {
        boolean ret = mSharedPreferences.getString(PREFERENCE_DEVICE_ID, null) == null;
        if (ret) {
            SharedPreferences.Editor editor = mSharedPreferences.edit();
            editor.putString(PREFERENCE_DEVICE_ID, Build.SERIAL);
            editor.apply();
        }
        return ret;
    }
}