2 * SomePlayer - An alternate music player for Maemo 5
3 * Copyright (C) 2010 Nikolay (somebody) Tischenko <niktischenko@gmail.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 #include "dbstorage.h"
24 using namespace SomePlayer::Storage;
25 using namespace SomePlayer::DataObjects;
27 DbStorage::DbStorage(QString path) {
28 QString dbname = path+_DATABASE_NAME_;
29 db = QSqlDatabase::addDatabase("QSQLITE");
30 db.setDatabaseName(dbname);
32 // throw big exception
34 // create database structure
35 _create_database_structure();
39 void DbStorage::_prepare_queries() {
40 _get_artists_query = new QSqlQuery(db);
41 _get_artists_query->prepare("SELECT name FROM artist");
43 _get_albums_for_artist_query = new QSqlQuery(db);
44 _get_albums_for_artist_query->prepare("SELECT name FROM album WHERE artist_id in (SELECT id from artist WHERE name = :name);");
46 _get_tracks_for_album_query = new QSqlQuery(db);
47 _get_tracks_for_album_query->prepare("SELECT id, title, source, count, length FROM tracks WHERE artist_id IN "
48 "(SELECT id FROM artist WHERE name = :artist_name) AND album_id IN "
49 "(SELECT id FROM album WHERE name = :album_name);");
51 _get_favorites_query = new QSqlQuery(db);
52 _get_favorites_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
53 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
54 "tracks JOIN artist ON tracks.artist_id = artist.id) "
55 "JOIN album ON album_id = album.id WHERE track_id IN "
56 "(SELECT track_id FROM favorites);");
58 _get_most_played_query = new QSqlQuery(db);
59 _get_most_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
60 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
61 "tracks JOIN artist ON tracks.artist_id = artist.id) "
62 "JOIN album ON album_id = album.id ORDER BY count DESC "
65 _get_never_played_query = new QSqlQuery(db);
66 _get_never_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
67 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
68 "tracks JOIN artist ON tracks.artist_id = artist.id) "
69 "JOIN album ON album_id = album.id "
72 _get_recently_added_query = new QSqlQuery(db);
73 _get_recently_added_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
74 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
75 "tracks JOIN artist ON tracks.artist_id = artist.id) "
76 "JOIN album ON album_id = album.id "
78 "(SELECT track_id FROM adding_date ORDER BY date DESC LIMIT 0, :max)");
80 _get_track_count = new QSqlQuery(db);
81 _get_track_count->prepare("SELECT count from tracks WHERE id = :id");
83 _check_artist_query = new QSqlQuery(db);
84 _check_artist_query->prepare("SELECT id FROM artist WHERE name = :name");
86 _check_album_query = new QSqlQuery(db);
87 _check_album_query->prepare("SELECT id FROM album WHERE name = :name AND artist_id = :artist_id");
89 _check_track_query = new QSqlQuery(db);
90 _check_track_query->prepare("SELECT id FROM tracks WHERE source = :source");
92 _insert_artist_query = new QSqlQuery(db);
93 _insert_artist_query->prepare("INSERT INTO artist (name) values (:name)");
95 _insert_album_query = new QSqlQuery(db);
96 _insert_album_query->prepare("INSERT INTO album (name, artist_id) values (:name, :artist_id)");
98 _insert_track_query = new QSqlQuery(db);
99 _insert_track_query->prepare("INSERT INTO tracks (title, artist_id, album_id, source, length) values (:title, :artist_id, :album_id, :source, :length)");
101 _insert_date_query = new QSqlQuery(db);
102 _insert_date_query->prepare("INSERT INTO adding_date (track_id, date) values (:track_id, strftime('%s', 'now'))");
104 _insert_favorites_query = new QSqlQuery(db);
105 _insert_favorites_query->prepare("INSERT INTO favorites (track_id) values (:track_id)");
107 _update_track_count_query = new QSqlQuery(db);
108 _update_track_count_query->prepare("UPDATE tracks SET count = :count where id = :id");
111 void DbStorage::_create_database_structure() {
112 QSqlQuery *query = new QSqlQuery(db);
113 query->exec("create table artist (id integer primary key, "
116 query->exec("create table album (id integer primary key, "
117 "artist_id integer, "
119 "foreign key(artist_id) references arist(id) "
121 query->exec("create table tracks (id integer primary key, "
122 "artist_id integer, "
126 "count integer default 0, "
127 "length integer default 0, "
128 "foreign key(artist_id) references artist(id), "
129 "foreign key(album_id) references album(id) "
131 query->exec("create table favorites (track_id integer, "
132 "foreign key(track_id) references tracks(id) "
134 query->exec("create table adding_date (track_id integer, "
136 "foreign key(track_id) references tracks(id) "
140 DbStorage::~DbStorage() {
141 delete _get_albums_for_artist_query;
142 delete _get_artists_query;
143 delete _get_favorites_query;
144 delete _get_most_played_query;
145 delete _get_never_played_query;
146 delete _get_recently_added_query;
147 delete _get_tracks_for_album_query;
148 delete _check_album_query;
149 delete _check_artist_query;
150 delete _check_track_query;
151 delete _insert_album_query;
152 delete _insert_artist_query;
153 delete _insert_date_query;
154 delete _insert_track_query;
155 delete _insert_favorites_query;
156 delete _update_track_count_query;
160 QList<QString> DbStorage::getArtists() {
161 QList<QString> artists;
162 QSqlQuery *query = _get_artists_query;
164 while (query->next()) {
165 QString name = query->value(0).toString();
166 artists.append(name);
171 QList<QString> DbStorage::getAlbumsForArtist(QString artist) {
172 QList<QString> albums;
173 QSqlQuery *query = _get_albums_for_artist_query;
174 query->bindValue(":name", artist);
176 while (query->next()) {
177 QString name = query->value(0).toString();
183 QList<Track> DbStorage::getTracksForAlbum(QString album, QString artist) {
185 QSqlQuery *query = _get_tracks_for_album_query;
186 query->bindValue(":artist_name", artist);
187 query->bindValue(":album_name", album);
190 while (query->next()) {
191 int id = query->value(0).toInt();
192 QString title = query->value(1).toString();
193 QString source = query->value(2).toString();
194 int count = query->value(3).toInt();
195 int length = query->value(4).toInt();
196 TrackMetadata meta (title, artist, album, length);
197 Track track(id, meta, source);
198 track.setCount(count);
199 tracks.append(track);
205 Playlist DbStorage::getFavorites() {
207 QSqlQuery *query = _get_favorites_query;
209 while(query->next()) {
210 int id = query->value(0).toInt();
211 QString title = query->value(1).toString();
212 QString artist = query->value(2).toString();
213 QString album = query->value(3).toString();
214 QString source = query->value(4).toString();
215 int count = query->value(5).toInt();
216 int length = query->value(6).toInt();
217 TrackMetadata meta(title, artist, album, length);
218 Track track(id, meta, source);
219 track.setCount(count);
220 playlist.addTrack(track);
221 playlist.setName("Favorites");
226 Playlist DbStorage::getMostPlayed() {
228 QSqlQuery *query = _get_most_played_query;
229 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
231 while (query->next()) {
232 int id = query->value(0).toInt();
233 QString title = query->value(1).toString();
234 QString artist = query->value(2).toString();
235 QString album = query->value(3).toString();
236 QString source = query->value(4).toString();
237 int count = query->value(5).toInt();
238 int length = query->value(6).toInt();
239 TrackMetadata meta(title, artist, album, length);
240 Track track(id, meta, source);
241 track.setCount(count);
242 playlist.addTrack(track);
243 playlist.setName("Most popular");
248 Playlist DbStorage::getNeverPlayed() {
250 QSqlQuery *query = _get_never_played_query;
251 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
253 while (query->next()) {
254 int id = query->value(0).toInt();
255 QString title = query->value(1).toString();
256 QString artist = query->value(2).toString();
257 QString album = query->value(3).toString();
258 QString source = query->value(4).toString();
259 int count = query->value(5).toInt();
260 int length = query->value(6).toInt();
261 TrackMetadata meta(title, artist, album, length);
262 Track track(id, meta, source);
263 track.setCount(count);
264 playlist.addTrack(track);
265 playlist.setName("Never played");
270 Playlist DbStorage::getRecentlyAdded() {
272 QSqlQuery *query = _get_recently_added_query;
273 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
275 while (query->next()) {
276 int id = query->value(0).toInt();
277 QString title = query->value(1).toString();
278 QString artist = query->value(2).toString();
279 QString album = query->value(3).toString();
280 QString source = query->value(4).toString();
281 int count = query->value(5).toInt();
282 int length = query->value(6).toInt();
283 TrackMetadata meta(title, artist, album, length);
284 Track track(id, meta, source);
285 track.setCount(count);
286 playlist.addTrack(track);
287 playlist.setName("Recently added");
292 void DbStorage::removeTrack(Track track) {
294 QSqlQuery *query = new QSqlQuery(db);
295 query->prepare("DELETE FROM tracks WHERE id = :id;");
296 query->bindValue(":id", id);
298 query->prepare("DELETE FROM favorites WHERE track_id = :id;");
299 query->bindValue(":id", id);
301 query->prepare("DELETE FROM adding_date WHERE id = :id;");
302 query->bindValue(":id", id);
306 void DbStorage::addTrack(Track track) {
307 QString title = track.metadata().title();
308 QString artist = track.metadata().artist();
309 QString album = track.metadata().album();
310 QString source = track.source();
311 int artist_id = _check_add_artist(artist);
312 int album_id = _check_add_album(album, artist_id);
313 if (artist_id == -1 || album_id == -1) {
317 QSqlQuery *query = _check_track_query;
318 query->bindValue(":source", source);
321 // already in datebase, skip
324 query = _insert_track_query;
325 query->bindValue(":title", title);
326 query->bindValue(":artist_id", artist_id);
327 query->bindValue(":album_id", album_id);
328 query->bindValue(":source", source);
329 query->bindValue(":length", track.metadata().length());
332 query = _check_track_query;
333 query->bindValue(":source", source);
336 int id = query->value(0).toInt();
337 query = _insert_date_query;
338 query->bindValue(":track_id", id);
352 void DbStorage::addToFavorites(Track track) {
353 QSqlQuery *query = _insert_favorites_query;
354 query->bindValue(":track_id", track.id());
358 void DbStorage::updateTrackCount(Track track) {
359 QSqlQuery *query = _get_track_count;
360 query->bindValue(":id", track.id());
363 int count = query->value(0).toInt();
364 query = _update_track_count_query;
365 query->bindValue(":count", count+1);
366 query->bindValue(":id", track.id());
371 int DbStorage::_check_add_artist(QString artist) {
372 QSqlQuery *query = _check_artist_query;
373 query->bindValue(":name", artist);
376 int id = query->value(0).toInt();
379 query = _insert_artist_query;
380 query->bindValue(":name", artist);
382 return _check_add_artist(artist);
390 int DbStorage::_check_add_album(QString album, int artist_id) {
391 QSqlQuery *query = _check_album_query;
392 query->bindValue(":name", album);
393 query->bindValue(":artist_id", artist_id);
396 int id = query->value(0).toInt();
399 query = _insert_album_query;
400 query->bindValue(":name", album);
401 query->bindValue(":artist_id", artist_id);
403 return _check_add_album(album, artist_id);