2 * Copyright © 2019 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.
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.
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/>.
18 package net.ktnx.mobileledger.utils;
20 import android.annotation.TargetApi;
21 import android.app.Application;
22 import android.content.Context;
23 import android.content.res.Resources;
24 import android.database.Cursor;
25 import android.database.MatrixCursor;
26 import android.database.SQLException;
27 import android.database.sqlite.SQLiteDatabase;
28 import android.database.sqlite.SQLiteOpenHelper;
29 import android.os.Build;
30 import android.provider.FontsContract;
31 import android.util.Log;
32 import android.view.View;
33 import android.widget.AutoCompleteTextView;
34 import android.widget.FilterQueryProvider;
35 import android.widget.SimpleCursorAdapter;
37 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
38 import net.ktnx.mobileledger.model.Data;
40 import org.jetbrains.annotations.NonNls;
42 import java.io.BufferedReader;
43 import java.io.IOException;
44 import java.io.InputStream;
45 import java.io.InputStreamReader;
46 import java.util.Locale;
48 import static net.ktnx.mobileledger.utils.MLDB.DatabaseMode.READ;
49 import static net.ktnx.mobileledger.utils.MLDB.DatabaseMode.WRITE;
51 public final class MLDB {
52 public static final String ACCOUNTS_TABLE = "accounts";
53 public static final String DESCRIPTION_HISTORY_TABLE = "description_history";
54 public static final String OPT_LAST_SCRAPE = "last_scrape";
56 public static final String OPT_PROFILE_UUID = "profile_uuid";
57 private static final String NO_PROFILE = "-";
58 private static MobileLedgerDatabase helperForReading, helperForWriting;
59 private static Application context;
60 private static void checkState() {
62 throw new IllegalStateException("First call init with a valid context");
64 public static synchronized SQLiteDatabase getDatabase(DatabaseMode mode) {
70 if (helperForReading == null) helperForReading = new MobileLedgerDatabase(context);
71 db = helperForReading.getReadableDatabase();
74 if (helperForWriting == null) helperForWriting = new MobileLedgerDatabase(context);
75 db = helperForWriting.getWritableDatabase();
78 db.execSQL("pragma case_sensitive_like=ON;");
81 public static SQLiteDatabase getReadableDatabase() {
82 return getDatabase(READ);
84 public static SQLiteDatabase getWritableDatabase() {
85 return getDatabase(WRITE);
87 static public int getIntOption(String name, int default_value) {
88 String s = getOption(name, String.valueOf(default_value));
90 return Integer.parseInt(s);
93 Log.d("db", "returning default int value of " + name, e);
97 static public long getLongOption(String name, long default_value) {
98 String s = getOption(name, String.valueOf(default_value));
100 return Long.parseLong(s);
102 catch (Exception e) {
103 Log.d("db", "returning default long value of " + name, e);
104 return default_value;
107 static public String getOption(String name, String default_value) {
108 Log.d("db", "about to fetch option " + name);
109 SQLiteDatabase db = getReadableDatabase();
110 try (Cursor cursor = db.rawQuery("select value from options where profile = ? and name=?",
111 new String[]{NO_PROFILE, name}))
113 if (cursor.moveToFirst()) {
114 String result = cursor.getString(0);
116 if (result == null) result = default_value;
118 Log.d("db", "option " + name + "=" + result);
121 else return default_value;
123 catch (Exception e) {
124 Log.d("db", "returning default value for " + name, e);
125 return default_value;
128 static public void setOption(String name, String value) {
129 Log.d("option", String.format("%s := %s", name, value));
130 SQLiteDatabase db = MLDB.getWritableDatabase();
131 db.execSQL("insert or replace into options(profile, name, value) values(?, ?, ?);",
132 new String[]{NO_PROFILE, name, value});
134 static public void setLongOption(String name, long value) {
135 setOption(name, String.valueOf(value));
137 @TargetApi(Build.VERSION_CODES.N)
138 public static void hookAutocompletionAdapter(final Context context,
139 final AutoCompleteTextView view,
140 final String table, final String field,
141 final boolean profileSpecific) {
142 hookAutocompletionAdapter(context, view, table, field, profileSpecific, null, null);
144 @TargetApi(Build.VERSION_CODES.N)
145 public static void hookAutocompletionAdapter(final Context context,
146 final AutoCompleteTextView view,
147 final String table, final String field,
148 final boolean profileSpecific,
150 final DescriptionSelectedCallback callback) {
151 String[] from = {field};
152 int[] to = {android.R.id.text1};
153 SimpleCursorAdapter adapter =
154 new SimpleCursorAdapter(context, android.R.layout.simple_dropdown_item_1line, null,
156 adapter.setStringConversionColumn(1);
158 FilterQueryProvider provider = constraint -> {
159 if (constraint == null) return null;
161 String str = constraint.toString().toUpperCase();
162 Log.d("autocompletion", "Looking for " + str);
163 String[] col_names = {FontsContract.Columns._ID, field};
164 MatrixCursor c = new MatrixCursor(col_names);
168 if (profileSpecific) {
169 sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
170 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
171 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 else 9 end " +
173 "WHERE profile=? AND %s_upper LIKE '%%'||?||'%%' " +
174 "ORDER BY 2, 1;", field, field, field, field, table, field);
175 params = new String[]{str, str, str, Data.profile.get().getUuid(), str};
178 sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
179 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
180 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
181 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
182 "ORDER BY 2, 1;", field, field, field, field, table, field);
183 params = new String[]{str, str, str, str};
185 Log.d("autocompletion", sql);
186 SQLiteDatabase db = MLDB.getReadableDatabase();
188 try (Cursor matches = db.rawQuery(sql, params)) {
190 while (matches.moveToNext()) {
191 String match = matches.getString(0);
192 int order = matches.getInt(1);
193 Log.d("autocompletion", String.format("match: %s |%d", match, order));
194 c.newRow().add(i++).add(match);
202 adapter.setFilterQueryProvider(provider);
204 view.setAdapter(adapter);
206 if (nextView != null) {
207 view.setOnItemClickListener((parent, itemView, position, id) -> {
208 nextView.requestFocus(View.FOCUS_FORWARD);
209 if (callback != null) {
210 callback.descriptionSelected(String.valueOf(view.getText()));
215 public static void init(Application context) {
216 MLDB.context = context;
218 public static void done() {
219 if (helperForReading != null) helperForReading.close();
221 if ((helperForWriting != helperForReading) && (helperForWriting != null))
222 helperForWriting.close();
225 public enum DatabaseMode {READ, WRITE}
228 class MobileLedgerDatabase extends SQLiteOpenHelper implements AutoCloseable {
229 public static final String DB_NAME = "MoLe.db";
230 public static final int LATEST_REVISION = 19;
232 private final Application mContext;
234 public MobileLedgerDatabase(Application context) {
235 super(context, DB_NAME, null, LATEST_REVISION);
236 Log.d("db", "creating helper instance");
238 super.setWriteAheadLoggingEnabled(true);
242 public void onCreate(SQLiteDatabase db) {
243 Log.d("db", "onCreate called");
244 onUpgrade(db, -1, LATEST_REVISION);
248 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
249 Log.d("db", "onUpgrade called");
250 for (int i = oldVersion + 1; i <= newVersion; i++) applyRevision(db, i);
253 private void applyRevision(SQLiteDatabase db, int rev_no) {
254 final Resources rm = mContext.getResources();
255 String rev_file = String.format(Locale.US, "sql_%d", rev_no);
257 int res_id = rm.getIdentifier(rev_file, "raw", mContext.getPackageName());
259 throw new SQLException(String.format(Locale.US, "No resource for revision %d", rev_no));
260 db.beginTransaction();
261 try (InputStream res = rm.openRawResource(res_id)) {
262 Log.d("db", "Applying revision " + String.valueOf(rev_no));
263 InputStreamReader isr = new InputStreamReader(res);
264 BufferedReader reader = new BufferedReader(isr);
268 while ((line = reader.readLine()) != null) {
269 if (line.startsWith("--")) {
273 if (line.isEmpty()) {
280 catch (Exception e) {
281 throw new RuntimeException(
282 String.format("Error applying revision %d, line %d", rev_no, line_no),
288 db.setTransactionSuccessful();
290 catch (IOException e) {
291 Log.e("db", String.format("Error opening raw resource for revision %d", rev_no));