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 androidx.room.Room;
  27
  28 import net.ktnx.mobileledger.db.DB;
  29 import net.ktnx.mobileledger.model.Data;
  30 import net.ktnx.mobileledger.ui.profiles.ProfileDetailModel;
  31 import net.ktnx.mobileledger.utils.Globals;
  32 import net.ktnx.mobileledger.utils.Logger;
  33 import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
  34
  35 import org.jetbrains.annotations.NotNull;
  36
  37 import java.net.Authenticator;
  38 import java.net.MalformedURLException;
  39 import java.net.PasswordAuthentication;
  40 import java.net.URL;
  41 import java.util.Locale;
  42
  43 public class App extends Application {
  44     public static App instance;
  45     private static ProfileDetailModel profileModel;
  46     private MobileLedgerDatabase dbHelper;
  47     private boolean monthNamesPrepared = false;
  48     private DB roomDatabase;
  49     public static SQLiteDatabase getDatabase() {
  50         if (instance == null)
  51             throw new RuntimeException("Application not created yet");
  52
  53         return instance.getDB();
  54     }
  55     public static DB getRoomDB() {
  56         if (instance == null)
  57             throw new RuntimeException("Application not created yet");
  58
  59         return instance.getRoomDatabase();
  60     }
  61     public DB getRoomDatabase(){
  62         return roomDatabase;
  63     }
  64     public static void prepareMonthNames() {
  65         instance.prepareMonthNames(false);
  66     }
  67     public static void setAuthenticationDataFromProfileModel(ProfileDetailModel model) {
  68         profileModel = model;
  69     }
  70     public static void resetAuthenticationData() {
  71         profileModel = null;
  72     }
  73     private String getAuthURL() {
  74         if (profileModel != null)
  75             return profileModel.getUrl();
  76         return Data.getProfile()
  77                    .getUrl();
  78     }
  79     private String getAuthUserName() {
  80         if (profileModel != null)
  81             return profileModel.getAuthUserName();
  82         return Data.getProfile()
  83                    .getAuthUserName();
  84     }
  85     private String getAuthPassword() {
  86         if (profileModel != null)
  87             return profileModel.getAuthPassword();
  88         return Data.getProfile()
  89                    .getAuthPassword();
  90     }
  91     private boolean getAuthEnabled() {
  92         if (profileModel != null)
  93             return profileModel.getUseAuthentication();
  94         return Data.getProfile()
  95                    .isAuthEnabled();
  96     }
  97     @Override
  98     public void onCreate() {
  99         Logger.debug("flow", "App onCreate()");
 100         instance = this;
 101         super.onCreate();
 102         roomDatabase = Room.databaseBuilder(this, DB.class, MobileLedgerDatabase.DB_NAME)
 103                               .build();
 104         Data.refreshCurrencyData(Locale.getDefault());
 105         Authenticator.setDefault(new Authenticator() {
 106             @Override
 107             protected PasswordAuthentication getPasswordAuthentication() {
 108                 if (getAuthEnabled()) {
 109                     try {
 110                         final URL url = new URL(getAuthURL());
 111                         final String requestingHost = getRequestingHost();
 112                         final String expectedHost = url.getHost();
 113                         if (requestingHost.equalsIgnoreCase(expectedHost))
 114                             return new PasswordAuthentication(getAuthUserName(),
 115                                     getAuthPassword().toCharArray());
 116                         else
 117                             Log.w("http-auth",
 118                                     String.format("Requesting host [%s] differs from expected [%s]",
 119                                             requestingHost, expectedHost));
 120                     }
 121                     catch (MalformedURLException e) {
 122                         e.printStackTrace();
 123                     }
 124                 }
 125
 126                 return super.getPasswordAuthentication();
 127             }
 128         });
 129     }
 130     private void prepareMonthNames(boolean force) {
 131         if (force || monthNamesPrepared)
 132             return;
 133         Resources rm = getResources();
 134         Globals.monthNames = rm.getStringArray(R.array.month_names);
 135         monthNamesPrepared = true;
 136     }
 137     @Override
 138     public void onTerminate() {
 139         Logger.debug("flow", "App onTerminate()");
 140         if (dbHelper != null)
 141             dbHelper.close();
 142         super.onTerminate();
 143     }
 144     @Override
 145     public void onConfigurationChanged(@NotNull Configuration newConfig) {
 146         super.onConfigurationChanged(newConfig);
 147         prepareMonthNames(true);
 148         Data.refreshCurrencyData(Locale.getDefault());
 149         Data.locale.setValue(Locale.getDefault());
 150     }
 151     public SQLiteDatabase getDB() {
 152         if (dbHelper == null)
 153             initDb();
 154
 155         return dbHelper.getWritableDatabase();
 156     }
 157     private synchronized void initDb() {
 158         if (dbHelper != null)
 159             return;
 160
 161         dbHelper = new MobileLedgerDatabase(this);
 162     }
 163 }