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.SharedPreferences;
  22 import android.content.res.Configuration;
  23 import android.content.res.Resources;
  24 import android.database.sqlite.SQLiteDatabase;
  25 import android.util.Log;
  26
  27 import net.ktnx.mobileledger.db.DB;
  28 import net.ktnx.mobileledger.model.Data;
  29 import net.ktnx.mobileledger.ui.profiles.ProfileDetailModel;
  30 import net.ktnx.mobileledger.utils.Colors;
  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 final String PREF_NAME = "MoLe";
  45     public static final String PREF_THEME_HUE = "theme-hue";
  46     public static final String PREF_PROFILE_ID = "profile-id";
  47     public static App instance;
  48     private static ProfileDetailModel profileModel;
  49     private MobileLedgerDatabase dbHelper;
  50     private boolean monthNamesPrepared = false;
  51     public static SQLiteDatabase getDatabase() {
  52         if (instance == null)
  53             throw new RuntimeException("Application not created yet");
  54
  55         return instance.getDB();
  56     }
  57     public static void prepareMonthNames() {
  58         instance.prepareMonthNames(false);
  59     }
  60     public static void setAuthenticationDataFromProfileModel(ProfileDetailModel model) {
  61         profileModel = model;
  62     }
  63     public static void resetAuthenticationData() {
  64         profileModel = null;
  65     }
  66     public static void storeStartupProfileAndTheme(long currentProfileId, int currentTheme) {
  67         SharedPreferences prefs = instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  68         SharedPreferences.Editor editor = prefs.edit();
  69         editor.putLong(PREF_PROFILE_ID, currentProfileId);
  70         editor.putInt(PREF_THEME_HUE, currentTheme);
  71         editor.apply();
  72     }
  73     public static long getStartupProfile() {
  74         SharedPreferences prefs = instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  75         return prefs.getLong(PREF_PROFILE_ID, -1);
  76     }
  77     public static int getStartupTheme() {
  78         SharedPreferences prefs = instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  79         return prefs.getInt(PREF_THEME_HUE, Colors.DEFAULT_HUE_DEG);
  80     }
  81     private String getAuthURL() {
  82         if (profileModel != null)
  83             return profileModel.getUrl();
  84         return Data.getProfile()
  85                    .getUrl();
  86     }
  87     private String getAuthUserName() {
  88         if (profileModel != null)
  89             return profileModel.getAuthUserName();
  90         return Data.getProfile()
  91                    .getAuthUser();
  92     }
  93     private String getAuthPassword() {
  94         if (profileModel != null)
  95             return profileModel.getAuthPassword();
  96         return Data.getProfile()
  97                    .getAuthPassword();
  98     }
  99     private boolean getAuthEnabled() {
 100         if (profileModel != null)
 101             return profileModel.getUseAuthentication();
 102         return Data.getProfile()
 103                    .useAuthentication();
 104     }
 105     @Override
 106     public void onCreate() {
 107         Logger.debug("flow", "App onCreate()");
 108         instance = this;
 109         super.onCreate();
 110         Data.refreshCurrencyData(Locale.getDefault());
 111         Authenticator.setDefault(new Authenticator() {
 112             @Override
 113             protected PasswordAuthentication getPasswordAuthentication() {
 114                 if (getAuthEnabled()) {
 115                     try {
 116                         final URL url = new URL(getAuthURL());
 117                         final String requestingHost = getRequestingHost();
 118                         final String expectedHost = url.getHost();
 119                         if (requestingHost.equalsIgnoreCase(expectedHost))
 120                             return new PasswordAuthentication(getAuthUserName(),
 121                                     getAuthPassword().toCharArray());
 122                         else
 123                             Log.w("http-auth",
 124                                     String.format("Requesting host [%s] differs from expected [%s]",
 125                                             requestingHost, expectedHost));
 126                     }
 127                     catch (MalformedURLException e) {
 128                         e.printStackTrace();
 129                     }
 130                 }
 131
 132                 return super.getPasswordAuthentication();
 133             }
 134         });
 135     }
 136     private void prepareMonthNames(boolean force) {
 137         if (force || monthNamesPrepared)
 138             return;
 139         Resources rm = getResources();
 140         Globals.monthNames = rm.getStringArray(R.array.month_names);
 141         monthNamesPrepared = true;
 142     }
 143     @Override
 144     public void onTerminate() {
 145         Logger.debug("flow", "App onTerminate()");
 146         if (dbHelper != null)
 147             dbHelper.close();
 148         super.onTerminate();
 149     }
 150     @Override
 151     public void onConfigurationChanged(@NotNull Configuration newConfig) {
 152         super.onConfigurationChanged(newConfig);
 153         prepareMonthNames(true);
 154         Data.refreshCurrencyData(Locale.getDefault());
 155         Data.locale.setValue(Locale.getDefault());
 156     }
 157     public SQLiteDatabase getDB() {
 158         if (dbHelper == null)
 159             initDb();
 160
 161         return dbHelper.getWritableDatabase();
 162     }
 163     private synchronized void initDb() {
 164         if (dbHelper != null)
 165             return;
 166
 167         // Let Room do any possible migrations
 168         // this method may be removed when all DB access is made via Room
 169         DB.get()
 170           .compileStatement("select count(*) from profiles");
 171         dbHelper = new MobileLedgerDatabase(this);
 172     }
 173 }