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 public final class MLDB {
49 public static final String ACCOUNTS_TABLE = "accounts";
50 public static final String DESCRIPTION_HISTORY_TABLE = "description_history";
51 public static final String OPT_LAST_SCRAPE = "last_scrape";
53 public static final String OPT_PROFILE_UUID = "profile_uuid";
54 private static final String NO_PROFILE = "-";
55 private static MobileLedgerDatabase dbHelper;
56 private static Application context;
57 private static void checkState() {
59 throw new IllegalStateException("First call init with a valid context");
61 public static SQLiteDatabase getDatabase() {
66 db = dbHelper.getWritableDatabase();
68 db.execSQL("pragma case_sensitive_like=ON;");
71 static public int getIntOption(String name, int default_value) {
72 String s = getOption(name, String.valueOf(default_value));
74 return Integer.parseInt(s);
77 Log.d("db", "returning default int value of " + name, e);
81 static public long getLongOption(String name, long default_value) {
82 String s = getOption(name, String.valueOf(default_value));
84 return Long.parseLong(s);
87 Log.d("db", "returning default long value of " + name, e);
91 static public String getOption(String name, String default_value) {
92 Log.d("db", "about to fetch option " + name);
93 SQLiteDatabase db = getDatabase();
94 try (Cursor cursor = db.rawQuery("select value from options where profile = ? and name=?",
95 new String[]{NO_PROFILE, name}))
97 if (cursor.moveToFirst()) {
98 String result = cursor.getString(0);
100 if (result == null) result = default_value;
102 Log.d("db", "option " + name + "=" + result);
105 else return default_value;
107 catch (Exception e) {
108 Log.d("db", "returning default value for " + name, e);
109 return default_value;
112 static public void setOption(String name, String value) {
113 Log.d("option", String.format("%s := %s", name, value));
114 SQLiteDatabase db = MLDB.getDatabase();
115 db.execSQL("insert or replace into options(profile, name, value) values(?, ?, ?);",
116 new String[]{NO_PROFILE, name, value});
118 static public void setLongOption(String name, long value) {
119 setOption(name, String.valueOf(value));
121 @TargetApi(Build.VERSION_CODES.N)
122 public static void hookAutocompletionAdapter(final Context context,
123 final AutoCompleteTextView view,
124 final String table, final String field,
125 final boolean profileSpecific) {
126 hookAutocompletionAdapter(context, view, table, field, profileSpecific, null, null);
128 @TargetApi(Build.VERSION_CODES.N)
129 public static void hookAutocompletionAdapter(final Context context,
130 final AutoCompleteTextView view,
131 final String table, final String field,
132 final boolean profileSpecific, final View nextView,
133 final DescriptionSelectedCallback callback) {
134 String[] from = {field};
135 int[] to = {android.R.id.text1};
136 SimpleCursorAdapter adapter =
137 new SimpleCursorAdapter(context, android.R.layout.simple_dropdown_item_1line, null,
139 adapter.setStringConversionColumn(1);
141 FilterQueryProvider provider = constraint -> {
142 if (constraint == null) return null;
144 String str = constraint.toString().toUpperCase();
145 Log.d("autocompletion", "Looking for " + str);
146 String[] col_names = {FontsContract.Columns._ID, field};
147 MatrixCursor c = new MatrixCursor(col_names);
151 if (profileSpecific) {
152 sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
153 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
154 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 else 9 end " +
156 "WHERE profile=? AND %s_upper LIKE '%%'||?||'%%' " +
157 "ORDER BY 2, 1;", field, field, field, field, table, field);
158 params = new String[]{str, str, str, Data.profile.get().getUuid(), str};
161 sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
162 "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
163 "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
164 "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
165 "ORDER BY 2, 1;", field, field, field, field, table, field);
166 params = new String[]{str, str, str, str};
168 Log.d("autocompletion", sql);
169 SQLiteDatabase db = MLDB.getDatabase();
171 try (Cursor matches = db.rawQuery(sql, params)) {
173 while (matches.moveToNext()) {
174 String match = matches.getString(0);
175 int order = matches.getInt(1);
176 Log.d("autocompletion", String.format("match: %s |%d", match, order));
177 c.newRow().add(i++).add(match);
185 adapter.setFilterQueryProvider(provider);
187 view.setAdapter(adapter);
189 if (nextView != null) {
190 view.setOnItemClickListener((parent, itemView, position, id) -> {
191 nextView.requestFocus(View.FOCUS_FORWARD);
192 if (callback != null) {
193 callback.descriptionSelected(String.valueOf(view.getText()));
198 public static synchronized void init(Application context) {
199 MLDB.context = context;
200 if (dbHelper != null)
201 throw new IllegalStateException("It appears init() was already called");
202 dbHelper = new MobileLedgerDatabase(context);
204 public static synchronized void done() {
205 if (dbHelper != null) {
206 Log.d("db", "Closing DB helper");
213 class MobileLedgerDatabase extends SQLiteOpenHelper implements AutoCloseable {
214 private static final String DB_NAME = "MoLe.db";
215 private static final int LATEST_REVISION = 22;
216 private static final String CREATE_DB_SQL = "create_db";
218 private final Application mContext;
220 public MobileLedgerDatabase(Application context) {
221 super(context, DB_NAME, null, LATEST_REVISION);
222 Log.d("db", "creating helper instance");
224 super.setWriteAheadLoggingEnabled(true);
228 public void onCreate(SQLiteDatabase db) {
229 Log.d("db", "onCreate called");
230 applyRevisionFile(db, CREATE_DB_SQL);
234 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
235 Log.d("db", "onUpgrade called");
236 for (int i = oldVersion + 1; i <= newVersion; i++) applyRevision(db, i);
239 private void applyRevision(SQLiteDatabase db, int rev_no) {
240 String rev_file = String.format(Locale.US, "sql_%d", rev_no);
242 applyRevisionFile(db, rev_file);
244 private void applyRevisionFile(SQLiteDatabase db, String rev_file) {
245 final Resources rm = mContext.getResources();
246 int res_id = rm.getIdentifier(rev_file, "raw", mContext.getPackageName());
248 throw new SQLException(String.format(Locale.US, "No resource for %s", rev_file));
249 db.beginTransaction();
250 try (InputStream res = rm.openRawResource(res_id)) {
251 Log.d("db", "Applying " + rev_file);
252 InputStreamReader isr = new InputStreamReader(res);
253 BufferedReader reader = new BufferedReader(isr);
257 while ((line = reader.readLine()) != null) {
258 if (line.startsWith("--")) {
262 if (line.isEmpty()) {
269 catch (Exception e) {
270 throw new RuntimeException(
271 String.format("Error applying %s, line %d", rev_file, line_no), e);
276 db.setTransactionSuccessful();
278 catch (IOException e) {
279 Log.e("db", String.format("Error opening raw resource for %s", rev_file));