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 =
  68                 instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  69         SharedPreferences.Editor editor = prefs.edit();
  70         editor.putLong(PREF_PROFILE_ID,
  71                 currentProfileId);
  72         editor.putInt(PREF_THEME_HUE, currentTheme);
  73         editor.apply();
  74     }
  75     public static long getStartupProfile() {
  76         SharedPreferences prefs = instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  77         return prefs.getLong(PREF_PROFILE_ID, -1);
  78     }
  79     public static int getStartupTheme() {
  80         SharedPreferences prefs = instance.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
  81         return prefs.getInt(PREF_THEME_HUE, Colors.DEFAULT_HUE_DEG);
  82     }
  83     private String getAuthURL() {
  84         if (profileModel != null)
  85             return profileModel.getUrl();
  86         return Data.getProfile()
  87                    .getUrl();
  88     }
  89     private String getAuthUserName() {
  90         if (profileModel != null)
  91             return profileModel.getAuthUserName();
  92         return Data.getProfile()
  93                    .getAuthUserName();
  94     }
  95     private String getAuthPassword() {
  96         if (profileModel != null)
  97             return profileModel.getAuthPassword();
  98         return Data.getProfile()
  99                    .getAuthPassword();
 100     }
 101     private boolean getAuthEnabled() {
 102         if (profileModel != null)
 103             return profileModel.getUseAuthentication();
 104         return Data.getProfile()
 105                    .isAuthEnabled();
 106     }
 107     @Override
 108     public void onCreate() {
 109         Logger.debug("flow", "App onCreate()");
 110         instance = this;
 111         super.onCreate();
 112         Data.refreshCurrencyData(Locale.getDefault());
 113         Authenticator.setDefault(new Authenticator() {
 114             @Override
 115             protected PasswordAuthentication getPasswordAuthentication() {
 116                 if (getAuthEnabled()) {
 117                     try {
 118                         final URL url = new URL(getAuthURL());
 119                         final String requestingHost = getRequestingHost();
 120                         final String expectedHost = url.getHost();
 121                         if (requestingHost.equalsIgnoreCase(expectedHost))
 122                             return new PasswordAuthentication(getAuthUserName(),
 123                                     getAuthPassword().toCharArray());
 124                         else
 125                             Log.w("http-auth",
 126                                     String.format("Requesting host [%s] differs from expected [%s]",
 127                                             requestingHost, expectedHost));
 128                     }
 129                     catch (MalformedURLException e) {
 130                         e.printStackTrace();
 131                     }
 132                 }
 133
 134                 return super.getPasswordAuthentication();
 135             }
 136         });
 137     }
 138     private void prepareMonthNames(boolean force) {
 139         if (force || monthNamesPrepared)
 140             return;
 141         Resources rm = getResources();
 142         Globals.monthNames = rm.getStringArray(R.array.month_names);
 143         monthNamesPrepared = true;
 144     }
 145     @Override
 146     public void onTerminate() {
 147         Logger.debug("flow", "App onTerminate()");
 148         if (dbHelper != null)
 149             dbHelper.close();
 150         super.onTerminate();
 151     }
 152     @Override
 153     public void onConfigurationChanged(@NotNull Configuration newConfig) {
 154         super.onConfigurationChanged(newConfig);
 155         prepareMonthNames(true);
 156         Data.refreshCurrencyData(Locale.getDefault());
 157         Data.locale.setValue(Locale.getDefault());
 158     }
 159     public SQLiteDatabase getDB() {
 160         if (dbHelper == null)
 161             initDb();
 162
 163         return dbHelper.getWritableDatabase();
 164     }
 165     private synchronized void initDb() {
 166         if (dbHelper != null)
 167             return;
 168
 169         // Let Room do any possible migrations
 170         // this method may be removed when all DB access is made via Room
 171         DB.get()
 172           .compileStatement("select count(*) from profiles");
 173         dbHelper = new MobileLedgerDatabase(this);
 174     }
 175 }