provide cloud backup functionality

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / backup / ConfigIO.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/backup/ConfigIO.java b/app/src/main/java/net/ktnx/mobileledger/backup/ConfigIO.java
new file mode 100644 (file)
index 0000000..ec7a949
--- /dev/null
+++ b/app/src/main/java/net/ktnx/mobileledger/backup/ConfigIO.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright © 2021 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.backup;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+
+import net.ktnx.mobileledger.utils.Misc;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+abstract class ConfigIO extends Thread {
+    protected final OnErrorListener onErrorListener;
+    protected ParcelFileDescriptor pfd;
+    ConfigIO(Context context, Uri uri, OnErrorListener onErrorListener)
+            throws FileNotFoundException {
+        this.onErrorListener = onErrorListener;
+        pfd = context.getContentResolver()
+                     .openFileDescriptor(uri, getStreamMode());
+
+        initStream();
+    }
+    abstract protected String getStreamMode();
+
+    abstract protected void initStream();
+
+    abstract protected void processStream() throws IOException;
+    @Override
+    public void run() {
+        try {
+            processStream();
+        }
+        catch (Exception e) {
+            Log.e("cfg-json", "Error processing settings as JSON", e);
+            if (onErrorListener != null)
+                Misc.onMainThread(() -> onErrorListener.error(e));
+        }
+        finally {
+            try {
+                pfd.close();
+            }
+            catch (Exception e) {
+                Log.e("cfg-json", "Error closing file descriptor", e);
+            }
+        }
+    }
+    protected static class Keys {
+        static final String ACCOUNTS = "accounts";
+        static final String AMOUNT = "amount";
+        static final String AMOUNT_GROUP = "amountGroup";
+        static final String API_VER = "apiVersion";
+        static final String AUTH_PASS = "authPass";
+        static final String AUTH_USER = "authUser";
+        static final String CAN_POST = "permitPosting";
+        static final String COLOUR = "colour";
+        static final String COMMENT = "comment";
+        static final String COMMENT_GROUP = "commentMatchGroup";
+        static final String COMMODITIES = "commodities";
+        static final String CURRENCY = "commodity";
+        static final String CURRENCY_GROUP = "commodityGroup";
+        static final String CURRENT_PROFILE = "currentProfile";
+        static final String DATE_DAY = "dateDay";
+        static final String DATE_DAY_GROUP = "dateDayMatchGroup";
+        static final String DATE_MONTH = "dateMonth";
+        static final String DATE_MONTH_GROUP = "dateMonthMatchGroup";
+        static final String DATE_YEAR = "dateYear";
+        static final String DATE_YEAR_GROUP = "dateYearMatchGroup";
+        static final String DEFAULT_COMMODITY = "defaultCommodity";
+        static final String FUTURE_DATES = "futureDates";
+        static final String HAS_GAP = "hasGap";
+        static final String IS_FALLBACK = "isFallback";
+        static final String NAME = "name";
+        static final String NAME_GROUP = "nameMatchGroup";
+        static final String NEGATE_AMOUNT = "negateAmount";
+        static final String POSITION = "position";
+        static final String PREF_ACCOUNT = "preferredAccountsFilter";
+        static final String PROFILES = "profiles";
+        static final String REGEX = "regex";
+        static final String SHOW_COMMENTS = "showCommentsByDefault";
+        static final String SHOW_COMMODITY = "showCommodityByDefault";
+        static final String TEMPLATES = "templates";
+        static final String TEST_TEXT = "testText";
+        static final String TRANSACTION = "description";
+        static final String TRANSACTION_GROUP = "descriptionMatchGroup";
+        static final String URL = "url";
+        static final String USE_AUTH = "useAuth";
+        static final String UUID = "uuid";
+    }
+
+    abstract static public class OnErrorListener {
+        public abstract void error(Exception e);
+    }
+}