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

   1 /*
   2  * Copyright © 2021 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.db.DB;
  27 import net.ktnx.mobileledger.model.Data;
  28 import net.ktnx.mobileledger.ui.profiles.ProfileDetailModel;
  29 import net.ktnx.mobileledger.utils.Globals;
  30 import net.ktnx.mobileledger.utils.Logger;
  31 import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
  32
  33 import org.jetbrains.annotations.NotNull;
  34
  35 import java.net.Authenticator;
  36 import java.net.MalformedURLException;
  37 import java.net.PasswordAuthentication;
  38 import java.net.URL;
  39 import java.util.Locale;
  40
  41 public class App extends Application {
  42     public static App instance;
  43     private static ProfileDetailModel profileModel;
  44     private MobileLedgerDatabase dbHelper;
  45     private boolean monthNamesPrepared = false;
  46     public static SQLiteDatabase getDatabase() {
  47         if (instance == null)
  48             throw new RuntimeException("Application not created yet");
  49
  50         return instance.getDB();
  51     }
  52     public static void prepareMonthNames() {
  53         instance.prepareMonthNames(false);
  54     }
  55     public static void setAuthenticationDataFromProfileModel(ProfileDetailModel model) {
  56         profileModel = model;
  57     }
  58     public static void resetAuthenticationData() {
  59         profileModel = null;
  60     }
  61     private String getAuthURL() {
  62         if (profileModel != null)
  63             return profileModel.getUrl();
  64         return Data.getProfile()
  65                    .getUrl();
  66     }
  67     private String getAuthUserName() {
  68         if (profileModel != null)
  69             return profileModel.getAuthUserName();
  70         return Data.getProfile()
  71                    .getAuthUserName();
  72     }
  73     private String getAuthPassword() {
  74         if (profileModel != null)
  75             return profileModel.getAuthPassword();
  76         return Data.getProfile()
  77                    .getAuthPassword();
  78     }
  79     private boolean getAuthEnabled() {
  80         if (profileModel != null)
  81             return profileModel.getUseAuthentication();
  82         return Data.getProfile()
  83                    .isAuthEnabled();
  84     }
  85     @Override
  86     public void onCreate() {
  87         Logger.debug("flow", "App onCreate()");
  88         instance = this;
  89         super.onCreate();
  90         Data.refreshCurrencyData(Locale.getDefault());
  91         Authenticator.setDefault(new Authenticator() {
  92             @Override
  93             protected PasswordAuthentication getPasswordAuthentication() {
  94                 if (getAuthEnabled()) {
  95                     try {
  96                         final URL url = new URL(getAuthURL());
  97                         final String requestingHost = getRequestingHost();
  98                         final String expectedHost = url.getHost();
  99                         if (requestingHost.equalsIgnoreCase(expectedHost))
 100                             return new PasswordAuthentication(getAuthUserName(),
 101                                     getAuthPassword().toCharArray());
 102                         else
 103                             Log.w("http-auth",
 104                                     String.format("Requesting host [%s] differs from expected [%s]",
 105                                             requestingHost, expectedHost));
 106                     }
 107                     catch (MalformedURLException e) {
 108                         e.printStackTrace();
 109                     }
 110                 }
 111
 112                 return super.getPasswordAuthentication();
 113             }
 114         });
 115     }
 116     private void prepareMonthNames(boolean force) {
 117         if (force || monthNamesPrepared)
 118             return;
 119         Resources rm = getResources();
 120         Globals.monthNames = rm.getStringArray(R.array.month_names);
 121         monthNamesPrepared = true;
 122     }
 123     @Override
 124     public void onTerminate() {
 125         Logger.debug("flow", "App onTerminate()");
 126         if (dbHelper != null)
 127             dbHelper.close();
 128         super.onTerminate();
 129     }
 130     @Override
 131     public void onConfigurationChanged(@NotNull Configuration newConfig) {
 132         super.onConfigurationChanged(newConfig);
 133         prepareMonthNames(true);
 134         Data.refreshCurrencyData(Locale.getDefault());
 135         Data.locale.setValue(Locale.getDefault());
 136     }
 137     public SQLiteDatabase getDB() {
 138         if (dbHelper == null)
 139             initDb();
 140
 141         return dbHelper.getWritableDatabase();
 142     }
 143     private synchronized void initDb() {
 144         if (dbHelper != null)
 145             return;
 146
 147         // Let Room do any possible migrations
 148         // this method may be removed when all DB access is made via Room
 149         DB.get()
 150           .compileStatement("select count(*) from profiles");
 151         dbHelper = new MobileLedgerDatabase(this);
 152     }
 153 }