app/src/main/java/net/ktnx/mobileledger/App.java

   1 /*
   2  * Copyright © 2020 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger;
  19
  20 import android.app.Application;
  21 import android.content.res.Configuration;
  22 import android.content.res.Resources;
  23 import android.database.sqlite.SQLiteDatabase;
  24 import android.util.Log;
  25
  26 import net.ktnx.mobileledger.model.Data;
  27 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  28 import net.ktnx.mobileledger.utils.Globals;
  29 import net.ktnx.mobileledger.utils.Logger;
  30 import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
  31
  32 import org.jetbrains.annotations.NotNull;
  33
  34 import java.net.Authenticator;
  35 import java.net.MalformedURLException;
  36 import java.net.PasswordAuthentication;
  37 import java.net.URL;
  38 import java.util.Locale;
  39
  40 public class App extends Application {
  41     public static App instance;
  42     private MobileLedgerDatabase dbHelper;
  43     private boolean monthNamesPrepared = false;
  44     public static SQLiteDatabase getDatabase() {
  45         if (instance == null)
  46             throw new RuntimeException("Application not created yet");
  47
  48         return instance.getDB();
  49     }
  50     public static void prepareMonthNames() {
  51         instance.prepareMonthNames(false);
  52     }
  53     @Override
  54     public void onCreate() {
  55         Logger.debug("flow", "App onCreate()");
  56         instance = this;
  57         super.onCreate();
  58         Data.refreshCurrencyData(Locale.getDefault());
  59         Authenticator.setDefault(new Authenticator() {
  60             @Override
  61             protected PasswordAuthentication getPasswordAuthentication() {
  62                 MobileLedgerProfile p = Data.getProfile();
  63                 if (p.isAuthEnabled()) {
  64                     try {
  65                         final URL url = new URL(p.getUrl());
  66                         final String requestingHost = getRequestingHost();
  67                         final String expectedHost = url.getHost();
  68                         if (requestingHost.equalsIgnoreCase(expectedHost))
  69                             return new PasswordAuthentication(p.getAuthUserName(),
  70                                     p.getAuthPassword()
  71                                      .toCharArray());
  72                         else
  73                             Log.w("http-auth",
  74                                     String.format("Requesting host [%s] differs from expected [%s]",
  75                                             requestingHost, expectedHost));
  76                     }
  77                     catch (MalformedURLException e) {
  78                         e.printStackTrace();
  79                     }
  80                 }
  81
  82                 return super.getPasswordAuthentication();
  83             }
  84         });
  85     }
  86     private void prepareMonthNames(boolean force) {
  87         if (force || monthNamesPrepared)
  88             return;
  89         Resources rm = getResources();
  90         Globals.monthNames = rm.getStringArray(R.array.month_names);
  91         monthNamesPrepared = true;
  92     }
  93     @Override
  94     public void onTerminate() {
  95         Logger.debug("flow", "App onTerminate()");
  96         if (dbHelper != null)
  97             dbHelper.close();
  98         super.onTerminate();
  99     }
 100     @Override
 101     public void onConfigurationChanged(@NotNull Configuration newConfig) {
 102         super.onConfigurationChanged(newConfig);
 103         prepareMonthNames(true);
 104         Data.refreshCurrencyData(Locale.getDefault());
 105         Data.locale.setValue(Locale.getDefault());
 106     }
 107     public SQLiteDatabase getDB() {
 108         if (dbHelper == null)
 109             initDb();
 110
 111         return dbHelper.getWritableDatabase();
 112     }
 113     private synchronized void initDb() {
 114         if (dbHelper != null)
 115             return;
 116
 117         dbHelper = new MobileLedgerDatabase(this);
 118     }
 119 }