5 using namespace SomePlayer::Storage;
6 using namespace SomePlayer::DataObjects;
8 DbStorage::DbStorage(QString path) {
9 QString dbname = path+_DATABASE_NAME_;
10 db = QSqlDatabase::addDatabase("QSQLITE");
11 db.setDatabaseName(dbname);
13 // throw big exception
15 // create database structure
16 _create_database_structure();
20 void DbStorage::_prepare_queries() {
21 _get_artists_query = new QSqlQuery(db);
22 _get_artists_query->prepare("SELECT name FROM artist");
24 _get_albums_for_artist_query = new QSqlQuery(db);
25 _get_albums_for_artist_query->prepare("SELECT name FROM album WHERE artist_id in (SELECT id from artist WHERE name = :name);");
27 _get_tracks_for_album_query = new QSqlQuery(db);
28 _get_tracks_for_album_query->prepare("SELECT id, title, source, count, length FROM tracks WHERE artist_id IN "
29 "(SELECT id FROM artist WHERE name = :artist_name) AND album_id IN "
30 "(SELECT id FROM album WHERE name =: album_name);");
32 _get_favorites_query = new QSqlQuery(db);
33 _get_favorites_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
34 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
35 "tracks JOIN artist ON tracks.artist_id = artist.id) "
36 "JOIN album ON album_id = album.id WHERE track_id IN "
37 "(SELECT track_id FROM favorites);");
39 _get_most_played_query = new QSqlQuery(db);
40 _get_most_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
41 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
42 "tracks JOIN artist ON tracks.artist_id = artist.id) "
43 "JOIN album ON album_id = album.id ORDER BY count DESC "
46 _get_never_played_query = new QSqlQuery(db);
47 _get_never_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
48 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
49 "tracks JOIN artist ON tracks.artist_id = artist.id) "
50 "JOIN album ON album_id = album.id "
53 _get_recently_added_query = new QSqlQuery(db);
54 _get_recently_added_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
55 "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
56 "tracks JOIN artist ON tracks.artist_id = artist.id) "
57 "JOIN album ON album_id = album.id "
59 "(SELECT track_id FROM adding_date ORDER BY date DESC LIMIT 0, :max)");
60 _check_artist_query = new QSqlQuery(db);
61 _check_artist_query->prepare("SELECT id FROM artist WHERE name = :name");
63 _check_album_query = new QSqlQuery(db);
64 _check_album_query->prepare("SELECT id FROM album WHERE name = :name AND artist_id = :artist_id");
66 _check_track_query = new QSqlQuery(db);
67 _check_track_query->prepare("SELECT id FROM tracks WHERE source = :source");
69 _insert_artist_query = new QSqlQuery(db);
70 _insert_artist_query->prepare("INSERT INTO artist (name) values (:name)");
72 _insert_album_query = new QSqlQuery(db);
73 _insert_album_query->prepare("INSERT INTO album (name, artist_id) values (:name, :artist_id)");
75 _insert_track_query = new QSqlQuery(db);
76 _insert_track_query->prepare("INSERT INTO tracks (title, artist_id, album_id, source, length) values (:title, :artist_id, :album_id, :source, :length)");
78 _insert_date_query = new QSqlQuery(db);
79 _insert_date_query->prepare("INSERT INTO adding_date (track_id, date) values (:track_id, strftime('%s', 'now'))");
81 _insert_favorites_query = new QSqlQuery(db);
82 _insert_favorites_query->prepare("INSERT INTO favorites (track_id) values (:track_id)");
84 _update_track_count_query = new QSqlQuery(db);
85 _update_track_count_query->prepare("UPDATE tracks SET count = :count where id = :id");
88 void DbStorage::_create_database_structure() {
89 QSqlQuery *query = new QSqlQuery(db);
90 query->exec("create table artist (id integer primary key, "
93 query->exec("create table album (id integer primary key, "
96 "foreign key(artist_id) references arist(id) "
98 query->exec("create table tracks (id integer primary key, "
103 "count integer default 0, "
104 "length integer default 0, "
105 "foreign key(artist_id) references artist(id), "
106 "foreign key(album_id) references album(id) "
108 query->exec("create table favorites (track_id integer, "
109 "foreign key(track_id) references tracks(id) "
111 query->exec("create table adding_date (track_id integer, "
113 "foreign key(track_id) references tracks(id) "
117 DbStorage::~DbStorage() {
118 delete _get_albums_for_artist_query;
119 delete _get_artists_query;
120 delete _get_favorites_query;
121 delete _get_most_played_query;
122 delete _get_never_played_query;
123 delete _get_recently_added_query;
124 delete _get_tracks_for_album_query;
125 delete _check_album_query;
126 delete _check_artist_query;
127 delete _check_track_query;
128 delete _insert_album_query;
129 delete _insert_artist_query;
130 delete _insert_date_query;
131 delete _insert_track_query;
132 delete _insert_favorites_query;
133 delete _update_track_count_query;
137 QList<QString> DbStorage::getArtists() {
138 QList<QString> artists;
139 QSqlQuery *query = _get_artists_query;
141 while (query->next()) {
142 QString name = query->value(0).toString();
143 artists.append(name);
148 QList<QString> DbStorage::getAlbumsForArtist(QString artist) {
149 QList<QString> albums;
150 QSqlQuery *query = _get_albums_for_artist_query;
151 query->bindValue(":name", artist);
153 while (query->next()) {
154 QString name = query->value(0).toString();
160 QList<Track> DbStorage::getTracksForAlbum(QString album, QString artist) {
162 QSqlQuery *query = _get_tracks_for_album_query;
163 query->bindValue(":artist_name", artist);
164 query->bindValue(":album_name", album);
167 while (query->next()) {
168 int id = query->value(0).toInt();
169 QString title = query->value(1).toString();
170 QString source = query->value(2).toString();
171 int count = query->value(3).toInt();
172 int length = query->value(4).toInt();
173 TrackMetadata meta (title, artist, album, length);
174 Track track(id, meta, source);
175 track.setCount(count);
176 tracks.append(track);
182 Playlist DbStorage::getFavorites() {
184 QSqlQuery *query = _get_favorites_query;
186 while(query->next()) {
187 int id = query->value(0).toInt();
188 QString title = query->value(1).toString();
189 QString artist = query->value(2).toString();
190 QString album = query->value(3).toString();
191 QString source = query->value(4).toString();
192 int count = query->value(5).toInt();
193 int length = query->value(6).toInt();
194 TrackMetadata meta(title, artist, album, length);
195 Track track(id, meta, source);
196 track.setCount(count);
197 playlist.addTrack(track);
198 playlist.setName("Favorites");
203 Playlist DbStorage::getMostPlayed() {
205 QSqlQuery *query = _get_most_played_query;
206 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
208 while (query->next()) {
209 int id = query->value(0).toInt();
210 QString title = query->value(1).toString();
211 QString artist = query->value(2).toString();
212 QString album = query->value(3).toString();
213 QString source = query->value(4).toString();
214 int count = query->value(5).toInt();
215 int length = query->value(6).toInt();
216 TrackMetadata meta(title, artist, album, length);
217 Track track(id, meta, source);
218 track.setCount(count);
219 playlist.addTrack(track);
220 playlist.setName("Most popular");
225 Playlist DbStorage::getNeverPlayed() {
227 QSqlQuery *query = _get_never_played_query;
228 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
230 while (query->next()) {
231 int id = query->value(0).toInt();
232 QString title = query->value(1).toString();
233 QString artist = query->value(2).toString();
234 QString album = query->value(3).toString();
235 QString source = query->value(4).toString();
236 int count = query->value(5).toInt();
237 int length = query->value(6).toInt();
238 TrackMetadata meta(title, artist, album, length);
239 Track track(id, meta, source);
240 track.setCount(count);
241 playlist.addTrack(track);
242 playlist.setName("Never played");
247 Playlist DbStorage::getRecentlyAdded() {
249 QSqlQuery *query = _get_recently_added_query;
250 query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
252 while (query->next()) {
253 int id = query->value(0).toInt();
254 QString title = query->value(1).toString();
255 QString artist = query->value(2).toString();
256 QString album = query->value(3).toString();
257 QString source = query->value(4).toString();
258 int count = query->value(5).toInt();
259 int length = query->value(6).toInt();
260 TrackMetadata meta(title, artist, album, length);
261 Track track(id, meta, source);
262 track.setCount(count);
263 playlist.addTrack(track);
264 playlist.setName("Recently added");
269 void DbStorage::removeTrack(Track track) {
271 QSqlQuery *query = new QSqlQuery(db);
272 query->prepare("DELETE FROM tracks WHERE id = :id;");
273 query->bindValue(":id", id);
275 query->prepare("DELETE FROM favorites WHERE track_id = :id;");
276 query->bindValue(":id", id);
278 query->prepare("DELETE FROM adding_date WHERE id = :id;");
279 query->bindValue(":id", id);
283 void DbStorage::addTrack(Track track) {
284 QString title = track.metadata().title();
285 QString artist = track.metadata().artist();
286 QString album = track.metadata().album();
287 QString source = track.source();
288 int artist_id = _check_add_artist(artist);
289 int album_id = _check_add_album(album, artist_id);
290 if (artist_id == -1 || album_id == -1) {
294 QSqlQuery *query = _check_track_query;
295 query->bindValue(":source", source);
298 // already in datebase, skip
301 query = _insert_track_query;
302 query->bindValue(":title", title);
303 query->bindValue(":artist_id", artist_id);
304 query->bindValue(":album_id", album_id);
305 query->bindValue(":source", source);
306 query->bindValue(":length", track.metadata().length());
309 query = _check_track_query;
310 query->bindValue(":source", source);
313 int id = query->value(0).toInt();
314 query = _insert_date_query;
315 query->bindValue(":track_id", id);
329 void DbStorage::addToFavorites(Track track) {
330 QSqlQuery *query = _insert_favorites_query;
331 query->bindValue(":track_id", track.id());
335 void DbStorage::updateTrackCount(Track track) {
336 QSqlQuery *query = _update_track_count_query;
337 query->bindValue(":count", track.count());
338 query->bindValue(":id", track.id());
342 int DbStorage::_check_add_artist(QString artist) {
343 QSqlQuery *query = _check_artist_query;
344 query->bindValue(":name", artist);
347 int id = query->value(0).toInt();
350 query = _insert_artist_query;
351 query->bindValue(":name", artist);
353 return _check_add_artist(artist);
361 int DbStorage::_check_add_album(QString album, int artist_id) {
362 QSqlQuery *query = _check_album_query;
363 query->bindValue(":name", album);
364 query->bindValue(":artist_id", artist_id);
367 int id = query->value(0).toInt();
370 query = _insert_album_query;
371 query->bindValue(":name", album);
372 query->bindValue(":artist_id", artist_id);
374 return _check_add_album(album, artist_id);