WooDroid/app/src/main/java/me/gilo/wc/utils/AppUtils.java

package me.gilo.wc.utils;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Handler;
import android.support.annotation.StringRes;
import android.util.Base64;
import android.view.inputmethod.InputMethodManager;
import android.widget.Toast;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/*
 *
 */
public class AppUtils {

    Context context;

    String token;
    String expiry;

    public static final String MY_PREFS_NAME = "StarterApp";

    public AppUtils(Context context) {
        this.context = context;
    }

    public static void showToast(Context context, @StringRes int text, boolean isLong) {
        showToast(context, context.getString(text), isLong);
    }

    public static void showToast(Context context, String text, boolean isLong) {
        Toast.makeText(context, text, isLong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT).show();
    }

    public void saveToken(String token, String expiry){
        SharedPreferences.Editor editor = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE).edit();
        editor.putString("token", token);
        editor.putString("expiry", expiry);
        editor.putBoolean("loggedIn", true);
        editor.apply();
    }

    public String getToken() {
        SharedPreferences prefs = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE);
        return  prefs.getString("token", null);
    }

    public void saveCartSession(String sessionId, String expiry){
        SharedPreferences.Editor editor = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE).edit();
        editor.putString("cartSession", sessionId);
        editor.putString("expiry", expiry);
        editor.putBoolean("hasSession", true);
        editor.apply();
    }

    public String getCartSession() {
        SharedPreferences prefs = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE);
        return  prefs.getString("cartSession", null);
    }

    public String getExpiry() {
        SharedPreferences prefs = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE);
        return  prefs.getString("expiry", null);
    }

    public boolean isLoggedIn(){
        SharedPreferences prefs = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE);
        return  prefs.getBoolean("loggedIn", false);
    }

    public void logOut(){
        SharedPreferences.Editor editor = context.getSharedPreferences(MY_PREFS_NAME, context.MODE_PRIVATE).edit();
        editor.putString("token", "");
        editor.putString("expiry", "");
        editor.putBoolean("loggedIn", false);
        editor.apply();
    }

    public static Date getCurrentDateTime(){
        Date currentDate =  Calendar.getInstance().getTime();
        return currentDate;
    }

    public static String getFormattedDateString(Date date) {

        try {

            SimpleDateFormat spf = new SimpleDateFormat("EEE MMM d HH:mm:ss zzz yyyy");
            String dateString = spf.format(date);

            Date newDate = spf.parse(dateString);
            spf= new SimpleDateFormat("dd MMM yyyy HH:mm:ss");
            return spf.format(newDate);

        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String generateHash(String password) {
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("SHA-512");
            md.update(password.getBytes());
            byte byteData[] = md.digest();
            String base64 = Base64.encodeToString(byteData, Base64.NO_WRAP);
            return base64;

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void showMessage(Context context, String message) {
        Toast.makeText(context, message, Toast.LENGTH_LONG).show();
    }

    public static void openKeyboard(final Context context) {
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
                if (imm != null) {
                    imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);
                }
            }
        }, 500);
    }

    public static void hideKeyboard(Activity activity) {
        InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
        inputMethodManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
    }
}